Merge pull request #96 from Syngnat/release/0.4.1

Release/0.4.1

docs/HighGo_SM3_Integration_Guide.md

@@ -17,17 +17,17 @@ HighGo（瀚高）数据库需要使用支持 SM3 国密认证的 PostgreSQL 驱
 
 ### 步骤 2：放置驱动源码
 
-1. 在项目根目录创建 vendor 目录（如果不存在）：
+1. 在项目根目录创建目录（如果不存在）：
    ```bash
-   mkdir -p vendor/highgo-pq
+   mkdir -p third_party/highgo-pq
    ```
 
-2. 解压下载的驱动源码到 `vendor/highgo-pq/` 目录
+2. 解压下载的驱动源码到 `third_party/highgo-pq/` 目录
 
 3. 确保目录结构如下：
    ```
    GoNavi/
-   ├── vendor/
+   ├── third_party/
    │   └── highgo-pq/
    │       ├── go.mod
    │       ├── conn.go
@@ -36,10 +36,11 @@ HighGo（瀚高）数据库需要使用支持 SM3 国密认证的 PostgreSQL 驱
 
 ### 步骤 3：修改 go.mod
 
-在 `go.mod` 文件末尾添加 replace 指令：
+在 `go.mod` 中添加独立的 HighGo 驱动依赖与本地替换：
 
 ```go
-replace github.com/lib/pq => ./vendor/highgo-pq
+require github.com/highgo/pq-sm3 v0.0.0
+replace github.com/highgo/pq-sm3 => ./third_party/highgo-pq
 ```
 
 完整示例：
@@ -51,11 +52,24 @@ go 1.24.3
 require (
     // ... 现有依赖
     github.com/lib/pq v1.11.1
+    github.com/highgo/pq-sm3 v0.0.0
     // ... 其他依赖
 )
 
 // 在文件末尾添加
-replace github.com/lib/pq => ./vendor/highgo-pq
+replace github.com/highgo/pq-sm3 => ./third_party/highgo-pq
+```
+
+并将 `third_party/highgo-pq/go.mod` 的 module 修改为：
+
+```go
+module github.com/highgo/pq-sm3
+```
+
+同时在驱动源码中把注册名改为 `highgo`，确保不覆盖 `postgres`：
+
+```go
+sql.Register("highgo", &Driver{})
 ```
 
 ### 步骤 4：更新 HighGo 连接配置（可选）
@@ -100,10 +114,11 @@ q.Set("sslmode", "require")
 
 ### ⚠️ 影响范围
 
-使用 `go.mod replace` 会**全局替换** `github.com/lib/pq` 驱动，这意味着：
+采用独立驱动名后，影响范围如下：
 
-1. **PostgreSQL 连接也会使用瀚高驱动**
-2. **需要验证瀚高驱动对标准 PostgreSQL 的兼容性**
+1. **PostgreSQL 继续使用原生 `github.com/lib/pq`**
+2. **HighGo 使用 `github.com/highgo/pq-sm3`（本地替换到官方源码）**
+3. 两条连接链路互不覆盖，降低兼容性风险
 
 ### 兼容性验证
 
@@ -112,23 +127,24 @@ q.Set("sslmode", "require")
 1. ✅ HighGo 数据库连接（SM3 认证）
 2. ✅ 标准 PostgreSQL 连接（确保仍然可用）
 
-如果标准 PostgreSQL 连接失败，说明瀚高驱动不完全兼容，需要考虑其他方案。
+若 PostgreSQL 或 HighGo 任一连接异常，优先检查驱动注册名与 `go.mod` replace 是否一致。
 
 ### 回滚方案
 
 如果集成后出现问题，可以快速回滚：
 
 1. 删除 `go.mod` 中的 replace 指令
-2. 删除 `vendor/highgo-pq/` 目录
-3. 运行 `go mod tidy`
-4. 重新编译
+2. 删除 `go.mod` 中 `github.com/highgo/pq-sm3` 的 require
+3. 删除 `third_party/highgo-pq/` 目录
+4. 运行 `go mod tidy`
+5. 重新编译
 
 ## 四、瀚高驱动特性
 
 根据官方文档：
 
-- **包路径**：`github.com/lib/pq`（与标准版相同）
-- **驱动名**：`postgres`（与标准版相同）
+- **项目内包路径**：`github.com/highgo/pq-sm3`（映射到本地 `third_party/highgo-pq`）
+- **驱动名**：`highgo`（项目内独立注册，避免覆盖 `postgres`）
 - **SM3 支持**：自动启用国密认证
 - **默认端口**：5866
 - **默认数据库**：`highgo`
@@ -139,11 +155,11 @@ q.Set("sslmode", "require")
 
 ### 问题 1：编译失败
 
-**现象**：`go build` 报错找不到 `github.com/lib/pq`
+**现象**：`go build` 报错找不到 `github.com/highgo/pq-sm3`
 
 **解决**：
-1. 检查 `vendor/highgo-pq/` 目录是否存在
-2. 检查 `go.mod` 中 replace 路径是否正确
+1. 检查 `third_party/highgo-pq/` 目录是否存在
+2. 检查 `go.mod` 中 `github.com/highgo/pq-sm3` 的 require/replace 是否正确
 3. 运行 `go mod download`
 
 ### 问题 2：HighGo 连接失败
@@ -152,25 +168,26 @@ q.Set("sslmode", "require")
 
 **解决**：
 1. 确认瀚高驱动已正确替换（检查 `go.mod`）
-2. 确认 HighGo 服务器支持 SM3 认证
-3. 检查用户名、密码、端口是否正确
+2. 确认项目内驱动注册名为 `highgo`
+3. 确认 HighGo 服务器支持 SM3 认证
+4. 检查用户名、密码、端口是否正确
 
 ### 问题 3：PostgreSQL 连接失败
 
 **现象**：集成后标准 PostgreSQL 无法连接
 
 **解决**：
-1. 这说明瀚高驱动不完全兼容标准 PostgreSQL
-2. 需要考虑条件编译或其他隔离方案
-3. 临时回滚：删除 replace 指令
+1. 检查是否误将 `github.com/lib/pq` 全局 replace 到 HighGo 驱动
+2. 确认 PostgreSQL 仍使用 `sql.Open("postgres", dsn)`
+3. 确认 HighGo 使用 `sql.Open("highgo", dsn)`
 
 ## 六、后续优化建议
 
-如果发现瀚高驱动与标准 PostgreSQL 不兼容，可以考虑：
+如果后续需要增强，可考虑：
 
-1. **条件编译**：使用 Go build tags 分别编译两个版本
-2. **动态驱动注册**：如果瀚高驱动支持自定义驱动名
-3. **联系瀚高技术支持**：咨询官方兼容性方案
+1. 将 HighGo `sslmode` 做成可配置项（前后端联动）
+2. 增加 HighGo/PG 驱动链路健康检查项
+3. 联系瀚高技术支持确认 SM3 + SSL 最佳参数组合
 
 ## 七、参考资料
 

frontend/.gitignore

@@ -0,0 +1 @@
+.ace-tool/

frontend/package.json.md5

@@ -1 +1 @@
-5b8157374dae5f9340e31b2d0bd2c00e
+d0f9366af59a6367ad3c7e2d4185ead4

frontend/src/App.css

@@ -63,8 +63,28 @@ body {
 }
 
 body[data-theme='dark'] {
-    /* Improve contrast on transparent backgrounds */
-    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.8);
+    /* 移除全局 text-shadow：对每个文本元素增加 GPU compositing 成本，
+       在透明窗口环境下会显著加剧 GPU 负载 */
+}
+
+/* 连接配置弹窗：滚动仅在弹窗 body 内部，不使用外层 wrap 滚动条 */
+.connection-modal-wrap {
+    overflow: hidden !important;
+}
+
+.connection-modal-wrap .ant-modal-content {
+    max-height: calc(100vh - 72px);
+    display: flex;
+    flex-direction: column;
+}
+
+.connection-modal-wrap .ant-modal-body {
+    flex: 1 1 auto;
+    min-height: 0;
+}
+
+.connection-modal-wrap .ant-modal-footer {
+    flex-shrink: 0;
 }
 
 /* Custom Title Bar Close Button Hover */

frontend/src/App.tsx

@@ -2,7 +2,7 @@ import React, { useState, useEffect } from 'react';
 import { Layout, Button, ConfigProvider, theme, Dropdown, MenuProps, message, Modal, Spin, Slider, Progress } from 'antd';
 import zhCN from 'antd/locale/zh_CN';
 import { PlusOutlined, BulbOutlined, BulbFilled, ConsoleSqlOutlined, UploadOutlined, DownloadOutlined, CloudDownloadOutlined, BugOutlined, ToolOutlined, InfoCircleOutlined, GithubOutlined, SkinOutlined, CheckOutlined, MinusOutlined, BorderOutlined, CloseOutlined, SettingOutlined } from '@ant-design/icons';
-import { EventsOn } from '../wailsjs/runtime/runtime';
+import { Environment, EventsOn } from '../wailsjs/runtime/runtime';
 import Sidebar from './components/Sidebar';
 import TabManager from './components/TabManager';
 import ConnectionModal from './components/ConnectionModal';
@@ -11,6 +11,7 @@ import LogPanel from './components/LogPanel';
 import { useStore } from './store';
 import { SavedConnection } from './types';
 import { blurToFilter, normalizeBlurForPlatform, normalizeOpacityForPlatform, isWindowsPlatform } from './utils/appearance';
+import { SetWindowTranslucency } from '../wailsjs/go/app/App';
 import './App.css';
 
 const { Sider, Content } = Layout;
@@ -28,6 +29,30 @@ function App() {
   const effectiveBlur = normalizeBlurForPlatform(appearance.blur);
   const blurFilter = blurToFilter(effectiveBlur);
   const windowCornerRadius = 14;
+  const [isLinuxRuntime, setIsLinuxRuntime] = useState(false);
+
+  // 同步 macOS 窗口透明度：opacity=1.0 且 blur=0 时关闭 NSVisualEffectView，
+  // 避免 GPU 持续计算窗口背后的模糊合成
+  useEffect(() => {
+    SetWindowTranslucency(appearance.opacity, appearance.blur).catch(() => {});
+  }, [appearance.opacity, appearance.blur]);
+
+  useEffect(() => {
+      let cancelled = false;
+      Environment()
+          .then((env) => {
+              if (cancelled) return;
+              setIsLinuxRuntime((env?.platform || '').toLowerCase() === 'linux');
+          })
+          .catch(() => {
+              if (cancelled) return;
+              const platform = typeof navigator !== 'undefined' ? navigator.platform : '';
+              setIsLinuxRuntime(/linux/i.test(platform));
+          });
+      return () => {
+          cancelled = true;
+      };
+  }, []);
 
   // Background Helper
   const getBg = (darkHex: string, lightHex: string) => {
@@ -361,8 +386,13 @@ function App() {
   const [isAppearanceModalOpen, setIsAppearanceModalOpen] = useState(false);
 
 
-  // Log Panel
-  const [logPanelHeight, setLogPanelHeight] = useState(200);
+  // Log Panel: 最小高度按“工具栏 + 1 条日志行（微增）”限制
+  const LOG_PANEL_TOOLBAR_HEIGHT = 32;
+  const LOG_PANEL_SINGLE_ROW_HEIGHT = 39;
+  const LOG_PANEL_MIN_VISIBLE_ROWS = 1;
+  const LOG_PANEL_MIN_HEIGHT = LOG_PANEL_TOOLBAR_HEIGHT + (LOG_PANEL_SINGLE_ROW_HEIGHT * LOG_PANEL_MIN_VISIBLE_ROWS);
+  const LOG_PANEL_MAX_HEIGHT = 800;
+  const [logPanelHeight, setLogPanelHeight] = useState(Math.max(200, LOG_PANEL_MIN_HEIGHT));
   const [isLogPanelOpen, setIsLogPanelOpen] = useState(false);
   const logResizeRef = React.useRef<{ startY: number, startHeight: number } | null>(null);
   const logGhostRef = React.useRef<HTMLDivElement>(null);
@@ -391,7 +421,10 @@ function App() {
   const handleLogResizeUp = (e: MouseEvent) => {
       if (logResizeRef.current) {
           const delta = logResizeRef.current.startY - e.clientY; 
-          const newHeight = Math.max(100, Math.min(800, logResizeRef.current.startHeight + delta));
+          const newHeight = Math.max(
+              LOG_PANEL_MIN_HEIGHT,
+              Math.min(LOG_PANEL_MAX_HEIGHT, logResizeRef.current.startHeight + delta)
+          );
           setLogPanelHeight(newHeight);
       }
       
@@ -543,6 +576,17 @@ function App() {
       };
   }, []);
 
+  const linuxResizeHandleStyleBase = {
+      position: 'fixed',
+      zIndex: 12000,
+      background: 'transparent',
+      WebkitAppRegion: 'drag',
+      '--wails-draggable': 'drag',
+      userSelect: 'none'
+  } as any;
+
+  const showLinuxResizeHandles = isLinuxRuntime;
+
   return (
     <ConfigProvider
         locale={zhCN}
@@ -586,8 +630,8 @@ function App() {
             display: 'flex', 
             flexDirection: 'column',
             background: 'transparent',
-            borderRadius: windowCornerRadius,
-            clipPath: `inset(0 round ${windowCornerRadius}px)`,
+            borderRadius: showLinuxResizeHandles ? 0 : windowCornerRadius,
+            clipPath: showLinuxResizeHandles ? 'none' : `inset(0 round ${windowCornerRadius}px)`,
             backdropFilter: blurFilter,
             WebkitBackdropFilter: blurFilter,
         }}>
@@ -601,8 +645,6 @@ function App() {
                 alignItems: 'center',
                 justifyContent: 'space-between',
                 background: bgMain,
-                backdropFilter: blurFilter,
-                WebkitBackdropFilter: blurFilter,
                 borderBottom: 'none',
                 userSelect: 'none',
                 WebkitAppRegion: 'drag', // Wails drag region
@@ -653,8 +695,6 @@ function App() {
                 padding: '0 8px',
                 borderBottom: 'none',
                 background: bgMain,
-                backdropFilter: blurFilter,
-                WebkitBackdropFilter: blurFilter,
             }}
           >
             <Dropdown menu={{ items: toolsMenu }} placement="bottomLeft">
@@ -717,7 +757,7 @@ function App() {
             />
           </Sider>
            <Content style={{ background: 'transparent', overflow: 'hidden', display: 'flex', flexDirection: 'column' }}>
-             <div style={{ flex: 1, minHeight: 0, overflow: 'hidden', display: 'flex', flexDirection: 'column', background: bgContent, backdropFilter: blurFilter, WebkitBackdropFilter: blurFilter }}>
+             <div style={{ flex: 1, minHeight: 0, overflow: 'hidden', display: 'flex', flexDirection: 'column', background: bgContent }}>
                  <TabManager />
              </div>
              {isLogPanelOpen && (
@@ -888,6 +928,21 @@ function App() {
                   ) : null}
               </div>
           </Modal>
+
+          {showLinuxResizeHandles && (
+              <>
+                  {/* Linux Mint 下 frameless 仅局部可缩放：补四边四角命中层 */}
+                  <div style={{ ...linuxResizeHandleStyleBase, top: 0, left: 14, right: 14, height: 6, cursor: 'ns-resize' }} />
+                  <div style={{ ...linuxResizeHandleStyleBase, bottom: 0, left: 14, right: 14, height: 6, cursor: 'ns-resize' }} />
+                  <div style={{ ...linuxResizeHandleStyleBase, top: 14, bottom: 14, left: 0, width: 6, cursor: 'ew-resize' }} />
+                  <div style={{ ...linuxResizeHandleStyleBase, top: 14, bottom: 14, right: 0, width: 6, cursor: 'ew-resize' }} />
+
+                  <div style={{ ...linuxResizeHandleStyleBase, top: 0, left: 0, width: 14, height: 14, cursor: 'nwse-resize' }} />
+                  <div style={{ ...linuxResizeHandleStyleBase, top: 0, right: 0, width: 14, height: 14, cursor: 'nesw-resize' }} />
+                  <div style={{ ...linuxResizeHandleStyleBase, bottom: 0, left: 0, width: 14, height: 14, cursor: 'nesw-resize' }} />
+                  <div style={{ ...linuxResizeHandleStyleBase, bottom: 0, right: 0, width: 14, height: 14, cursor: 'nwse-resize' }} />
+              </>
+          )}
           
           {/* Ghost Resize Line for Sidebar */}
           <div 

frontend/src/components/DataViewer.tsx

@@ -4,7 +4,7 @@ import { TabData, ColumnDefinition } from '../types';
 import { useStore } from '../store';
 import { DBQuery, DBGetColumns } from '../../wailsjs/go/app/App';
 import DataGrid, { GONAVI_ROW_KEY } from './DataGrid';
-import { buildWhereSQL, quoteIdentPart, quoteQualifiedIdent } from '../utils/sql';
+import { buildOrderBySQL, buildWhereSQL, quoteQualifiedIdent, type FilterCondition } from '../utils/sql';
 
 const DataViewer: React.FC<{ tab: TabData }> = ({ tab }) => {
   const [data, setData] = useState<any[]>([]);
@@ -29,7 +29,7 @@ const DataViewer: React.FC<{ tab: TabData }> = ({ tab }) => {
   const [sortInfo, setSortInfo] = useState<{ columnKey: string, order: string } | null>(null);
   
   const [showFilter, setShowFilter] = useState(false);
-  const [filterConditions, setFilterConditions] = useState<any[]>([]);
+  const [filterConditions, setFilterConditions] = useState<FilterCondition[]>([]);
   const currentConnType = (connections.find(c => c.id === tab.connectionId)?.config?.type || '').toLowerCase();
   const forceReadOnly = currentConnType === 'tdengine';
 
@@ -69,9 +69,7 @@ const DataViewer: React.FC<{ tab: TabData }> = ({ tab }) => {
     const countSql = `SELECT COUNT(*) as total FROM ${quoteQualifiedIdent(dbType, tableName)} ${whereSQL}`;
     
     let sql = `SELECT * FROM ${quoteQualifiedIdent(dbType, tableName)} ${whereSQL}`;
-    if (sortInfo && sortInfo.order) {
-        sql += ` ORDER BY ${quoteIdentPart(dbType, sortInfo.columnKey)} ${sortInfo.order === 'ascend' ? 'ASC' : 'DESC'}`;
-    }
+    sql += buildOrderBySQL(dbType, sortInfo, pkColumns);
     const offset = (page - 1) * size;
     // 大表性能：打开表不阻塞在 COUNT(*)，先通过多取 1 条判断是否还有下一页；总数在后台统计并异步回填。
     sql += ` LIMIT ${size + 1} OFFSET ${offset}`;
@@ -205,13 +203,9 @@ const DataViewer: React.FC<{ tab: TabData }> = ({ tab }) => {
         });
     }
     if (fetchSeqRef.current === seq) setLoading(false);
-  }, [connections, tab, sortInfo, filterConditions, pkColumns.length]); 
-  // Depend on pkColumns.length to avoid loop? No, pkColumns is updated inside.
-  // Actually, 'pkColumns' state shouldn't trigger re-fetch.
-  // The 'if (pkColumns.length === 0)' check is inside.
-  // So adding pkColumns to dependency is safer but might trigger double fetch if not careful?
-  // Only if pkColumns changes. It changes once from [] to [...].
-  // So it's fine.
+  }, [connections, tab, sortInfo, filterConditions, pkColumns]); 
+  // 依赖 pkColumns：在无手动排序时可回退到主键稳定排序。
+  // 主键信息只会在首次加载后更新一次，避免循环查询。
 
   // Handlers memoized
   const handleReload = useCallback(() => {
@@ -220,7 +214,7 @@ const DataViewer: React.FC<{ tab: TabData }> = ({ tab }) => {
   const handleSort = useCallback((field: string, order: string) => setSortInfo({ columnKey: field, order }), []);
   const handlePageChange = useCallback((page: number, size: number) => fetchData(page, size), [fetchData]);
   const handleToggleFilter = useCallback(() => setShowFilter(prev => !prev), []);
-  const handleApplyFilter = useCallback((conditions: any[]) => setFilterConditions(conditions), []);
+  const handleApplyFilter = useCallback((conditions: FilterCondition[]) => setFilterConditions(conditions), []);
 
   useEffect(() => {
     fetchData(1, pagination.pageSize); 

frontend/src/components/DefinitionViewer.tsx

@@ -0,0 +1,393 @@
+import React, { useState, useEffect } from 'react';
+import Editor from '@monaco-editor/react';
+import { Spin, Alert } from 'antd';
+import { TabData } from '../types';
+import { useStore } from '../store';
+import { DBQuery } from '../../wailsjs/go/app/App';
+
+interface DefinitionViewerProps {
+    tab: TabData;
+}
+
+const DefinitionViewer: React.FC<DefinitionViewerProps> = ({ tab }) => {
+    const [loading, setLoading] = useState(true);
+    const [error, setError] = useState<string | null>(null);
+    const [definition, setDefinition] = useState<string>('');
+
+    const connections = useStore(state => state.connections);
+    const theme = useStore(state => state.theme);
+    const darkMode = theme === 'dark';
+
+    const escapeSQLLiteral = (raw: string): string => String(raw || '').replace(/'/g, "''");
+
+    const getMetadataDialect = (conn: any): string => {
+        const type = String(conn?.config?.type || '').trim().toLowerCase();
+        if (type === 'custom') {
+            return String(conn?.config?.driver || '').trim().toLowerCase();
+        }
+        if (type === 'mariadb' || type === 'sphinx') return 'mysql';
+        if (type === 'dameng') return 'dm';
+        return type;
+    };
+
+    const isSphinxConnection = (conn: any): boolean => {
+        const type = String(conn?.config?.type || '').trim().toLowerCase();
+        if (type === 'sphinx') return true;
+        if (type !== 'custom') return false;
+        const driver = String(conn?.config?.driver || '').trim().toLowerCase();
+        return driver === 'sphinx' || driver === 'sphinxql';
+    };
+
+    const parseSchemaAndName = (fullName: string): { schema: string; name: string } => {
+        const raw = String(fullName || '').trim();
+        const idx = raw.lastIndexOf('.');
+        if (idx > 0 && idx < raw.length - 1) {
+            return { schema: raw.substring(0, idx), name: raw.substring(idx + 1) };
+        }
+        return { schema: '', name: raw };
+    };
+
+    const buildShowViewQueries = (dialect: string, viewName: string, dbName: string): string[] => {
+        const { schema, name } = parseSchemaAndName(viewName);
+        const safeName = escapeSQLLiteral(name);
+        const safeDbName = escapeSQLLiteral(dbName);
+
+        switch (dialect) {
+            case 'mysql':
+                return [
+                    `SHOW CREATE VIEW \`${name.replace(/`/g, '``')}\``,
+                    safeDbName
+                        ? `SELECT VIEW_DEFINITION AS view_definition FROM information_schema.views WHERE table_schema = '${safeDbName}' AND table_name = '${safeName}' LIMIT 1`
+                        : '',
+                    `SHOW CREATE TABLE \`${name.replace(/`/g, '``')}\``,
+                ].filter(Boolean);
+            case 'postgres':
+            case 'kingbase':
+            case 'highgo':
+            case 'vastbase': {
+                const schemaRef = schema || 'public';
+                return [`SELECT pg_get_viewdef('${escapeSQLLiteral(schemaRef)}.${safeName}'::regclass, true) AS view_definition`];
+            }
+            case 'sqlserver':
+                return [`SELECT OBJECT_DEFINITION(OBJECT_ID('${escapeSQLLiteral(viewName)}')) AS view_definition`];
+            case 'oracle':
+            case 'dm':
+                if (schema) {
+                    return [`SELECT TEXT AS view_definition FROM ALL_VIEWS WHERE OWNER = '${escapeSQLLiteral(schema).toUpperCase()}' AND VIEW_NAME = '${safeName.toUpperCase()}'`];
+                }
+                if (safeDbName) {
+                    return [`SELECT TEXT AS view_definition FROM ALL_VIEWS WHERE OWNER = '${safeDbName.toUpperCase()}' AND VIEW_NAME = '${safeName.toUpperCase()}'`];
+                }
+                return [`SELECT TEXT AS view_definition FROM USER_VIEWS WHERE VIEW_NAME = '${safeName.toUpperCase()}'`];
+            case 'sqlite':
+                return [`SELECT sql AS view_definition FROM sqlite_master WHERE type='view' AND name='${safeName}'`];
+            default:
+                return [`-- 暂不支持该数据库类型的视图定义查看`];
+        }
+    };
+
+    const buildShowRoutineQueries = (dialect: string, routineName: string, routineType: string, dbName: string): string[] => {
+        const { schema, name } = parseSchemaAndName(routineName);
+        const safeName = escapeSQLLiteral(name);
+        const safeDbName = escapeSQLLiteral(dbName);
+        const upperType = (routineType || 'FUNCTION').toUpperCase();
+
+        switch (dialect) {
+            case 'mysql':
+                return [
+                    `SHOW CREATE ${upperType} \`${name.replace(/`/g, '``')}\``,
+                    safeDbName
+                        ? `SELECT ROUTINE_DEFINITION AS routine_definition, ROUTINE_TYPE AS routine_type FROM information_schema.routines WHERE routine_schema = '${safeDbName}' AND routine_name = '${safeName}' LIMIT 1`
+                        : '',
+                    upperType === 'PROCEDURE'
+                        ? `SHOW PROCEDURE STATUS LIKE '${safeName}'`
+                        : `SHOW FUNCTION STATUS LIKE '${safeName}'`,
+                ].filter(Boolean);
+            case 'postgres':
+            case 'kingbase':
+            case 'highgo':
+            case 'vastbase': {
+                const schemaRef = schema || 'public';
+                return [`SELECT pg_get_functiondef(p.oid) AS routine_definition FROM pg_proc p JOIN pg_namespace n ON p.pronamespace = n.oid WHERE n.nspname = '${escapeSQLLiteral(schemaRef)}' AND p.proname = '${safeName}' LIMIT 1`];
+            }
+            case 'sqlserver':
+                return [`SELECT OBJECT_DEFINITION(OBJECT_ID('${escapeSQLLiteral(routineName)}')) AS routine_definition`];
+            case 'oracle':
+            case 'dm': {
+                const owner = schema ? escapeSQLLiteral(schema).toUpperCase() : (safeDbName ? safeDbName.toUpperCase() : '');
+                if (owner) {
+                    return [`SELECT TEXT FROM ALL_SOURCE WHERE OWNER = '${owner}' AND NAME = '${safeName.toUpperCase()}' AND TYPE = '${upperType}' ORDER BY LINE`];
+                }
+                return [`SELECT TEXT FROM USER_SOURCE WHERE NAME = '${safeName.toUpperCase()}' AND TYPE = '${upperType}' ORDER BY LINE`];
+            }
+            case 'sqlite':
+                return [`-- SQLite 不支持存储函数/存储过程`];
+            default:
+                return [`-- 暂不支持该数据库类型的函数/存储过程定义查看`];
+        }
+    };
+
+    const runQueryCandidates = async (
+        config: Record<string, any>,
+        dbName: string,
+        queries: string[]
+    ): Promise<{ success: boolean; data: any[]; message?: string }> => {
+        let lastMessage = '';
+        let hasSuccessfulQuery = false;
+        for (const query of queries) {
+            const sql = String(query || '').trim();
+            if (!sql) continue;
+            try {
+                const result = await DBQuery(config as any, dbName, sql);
+                if (!result.success || !Array.isArray(result.data)) {
+                    lastMessage = result.message || lastMessage;
+                    continue;
+                }
+                hasSuccessfulQuery = true;
+                if (result.data.length > 0) {
+                    return { success: true, data: result.data };
+                }
+            } catch (error: any) {
+                lastMessage = error?.message || String(error);
+            }
+        }
+        if (hasSuccessfulQuery) {
+            return { success: true, data: [] };
+        }
+        return { success: false, data: [], message: lastMessage };
+    };
+
+    const getVersionHint = async (config: Record<string, any>, dbName: string): Promise<string> => {
+        const candidates = [
+            `SELECT VERSION() AS version`,
+            `SHOW VARIABLES LIKE 'version'`,
+        ];
+        for (const query of candidates) {
+            try {
+                const result = await DBQuery(config as any, dbName, query);
+                if (!result.success || !Array.isArray(result.data) || result.data.length === 0) {
+                    continue;
+                }
+                const row = result.data[0] as Record<string, any>;
+                const version =
+                    row.version
+                    || row.VERSION
+                    || row.Value
+                    || row.value
+                    || Object.values(row)[1]
+                    || Object.values(row)[0];
+                const text = String(version || '').trim();
+                if (text) return text;
+            } catch {
+                // ignore
+            }
+        }
+        return '';
+    };
+
+    const extractViewDefinition = (dialect: string, data: any[]): string => {
+        if (!data || data.length === 0) return '-- 未找到视图定义';
+        const row = data[0];
+
+        switch (dialect) {
+            case 'mysql': {
+                const keys = Object.keys(row);
+                const textDefinition = row.view_definition || row.VIEW_DEFINITION;
+                if (textDefinition) return String(textDefinition);
+                const sqlKey = keys.find(k => k.toLowerCase().includes('create view') || k.toLowerCase() === 'create view');
+                if (sqlKey) return row[sqlKey];
+                const tableSqlKey = keys.find(k => k.toLowerCase().includes('create table'));
+                if (tableSqlKey) return row[tableSqlKey];
+                for (const key of keys) {
+                    const val = String(row[key] || '');
+                    if (val.toUpperCase().includes('CREATE') && (val.toUpperCase().includes('VIEW') || val.toUpperCase().includes('TABLE'))) {
+                        return val;
+                    }
+                }
+                return JSON.stringify(row, null, 2);
+            }
+            case 'oracle':
+            case 'dm':
+                return row.view_definition || row.VIEW_DEFINITION || row.text || row.TEXT || Object.values(row)[0] || '';
+            default:
+                return row.view_definition || row.VIEW_DEFINITION || row.sql || row.SQL || Object.values(row)[0] || '';
+        }
+    };
+
+    const extractRoutineDefinition = (dialect: string, data: any[]): string => {
+        if (!data || data.length === 0) return '-- 未找到函数/存储过程定义';
+
+        switch (dialect) {
+            case 'mysql': {
+                const row = data[0];
+                const keys = Object.keys(row);
+                if (row.routine_definition || row.ROUTINE_DEFINITION) {
+                    return String(row.routine_definition || row.ROUTINE_DEFINITION);
+                }
+                const sqlKey = keys.find(k => k.toLowerCase().includes('create function') || k.toLowerCase().includes('create procedure'));
+                if (sqlKey) return row[sqlKey];
+                for (const key of keys) {
+                    const val = String(row[key] || '');
+                    if (val.toUpperCase().includes('CREATE') && (val.toUpperCase().includes('FUNCTION') || val.toUpperCase().includes('PROCEDURE'))) {
+                        return val;
+                    }
+                }
+                const routineName = String(row.Name || row.name || '').trim();
+                if (routineName) {
+                    const routineType = String(row.Type || row.type || row.ROUTINE_TYPE || row.routine_type || 'FUNCTION').trim().toUpperCase();
+                    return `-- 当前数据源未返回可执行定义文本，已返回元数据\n-- 名称: ${routineName}\n-- 类型: ${routineType}\n${JSON.stringify(row, null, 2)}`;
+                }
+                return JSON.stringify(row, null, 2);
+            }
+            case 'oracle':
+            case 'dm': {
+                // Oracle/DM ALL_SOURCE returns multiple rows, one per line
+                return data.map(row => row.text || row.TEXT || Object.values(row)[0] || '').join('');
+            }
+            default: {
+                const row = data[0];
+                return row.routine_definition || row.ROUTINE_DEFINITION || Object.values(row)[0] || '';
+            }
+        }
+    };
+
+    useEffect(() => {
+        const loadDefinition = async () => {
+            setLoading(true);
+            setError(null);
+
+            const conn = connections.find(c => c.id === tab.connectionId);
+            if (!conn) {
+                setError('未找到数据库连接');
+                setLoading(false);
+                return;
+            }
+
+            const dbName = tab.dbName || '';
+            const dialect = getMetadataDialect(conn);
+            const sphinxLike = isSphinxConnection(conn) && dialect === 'mysql';
+
+            let queries: string[];
+            let extractFn: (dialect: string, data: any[]) => string;
+            let objectLabel: string;
+
+            if (tab.type === 'view-def') {
+                const viewName = tab.viewName || '';
+                if (!viewName) {
+                    setError('视图名称为空');
+                    setLoading(false);
+                    return;
+                }
+                queries = buildShowViewQueries(dialect, viewName, dbName);
+                extractFn = extractViewDefinition;
+                objectLabel = '视图';
+            } else {
+                const routineName = tab.routineName || '';
+                const routineType = tab.routineType || 'FUNCTION';
+                if (!routineName) {
+                    setError('函数/存储过程名称为空');
+                    setLoading(false);
+                    return;
+                }
+                queries = buildShowRoutineQueries(dialect, routineName, routineType, dbName);
+                extractFn = extractRoutineDefinition;
+                objectLabel = '函数/存储过程';
+            }
+
+            if (!queries.length || String(queries[0] || '').startsWith('--')) {
+                setDefinition(String(queries[0] || '-- 暂不支持该对象定义查看'));
+                setLoading(false);
+                return;
+            }
+
+            try {
+                const config = {
+                    ...conn.config,
+                    port: Number(conn.config.port),
+                    password: conn.config.password || '',
+                    database: conn.config.database || '',
+                    useSSH: conn.config.useSSH || false,
+                    ssh: conn.config.ssh || { host: '', port: 22, user: '', password: '', keyPath: '' }
+                };
+
+                const result = await runQueryCandidates(config, dbName, queries);
+
+                if (result.success && Array.isArray(result.data) && result.data.length > 0) {
+                    const def = extractFn(dialect, result.data);
+                    setDefinition(def);
+                    return;
+                }
+
+                if (result.success) {
+                    if (sphinxLike) {
+                        const version = await getVersionHint(config, dbName);
+                        const versionText = version ? `（版本: ${version}）` : '';
+                        setDefinition(`-- 当前 Sphinx 实例${versionText}未返回${objectLabel}定义。\n-- 已执行多套兼容查询，可能是版本能力限制或对象类型不支持。`);
+                        return;
+                    }
+                    setDefinition(`-- 未找到${objectLabel}定义`);
+                } else if (sphinxLike) {
+                    const version = await getVersionHint(config, dbName);
+                    const versionText = version ? `（版本: ${version}）` : '';
+                    setDefinition(`-- 当前 Sphinx 实例${versionText}不支持${objectLabel}定义查询。\n-- 已自动尝试兼容语句，返回失败信息: ${result.message || 'unknown error'}`);
+                } else {
+                    setError(result.message || '查询定义失败');
+                }
+            } catch (e: any) {
+                setError('查询定义失败: ' + (e?.message || String(e)));
+            } finally {
+                setLoading(false);
+            }
+        };
+
+        loadDefinition();
+    }, [tab.connectionId, tab.dbName, tab.viewName, tab.routineName, tab.routineType, tab.type, connections]);
+
+    const objectLabel = tab.type === 'view-def' ? '视图' : '函数/存储过程';
+    const objectName = tab.type === 'view-def' ? tab.viewName : tab.routineName;
+
+    if (loading) {
+        return (
+            <div style={{ display: 'flex', justifyContent: 'center', alignItems: 'center', height: '100%' }}>
+                <Spin tip={`加载${objectLabel}定义...`} />
+            </div>
+        );
+    }
+
+    if (error) {
+        return (
+            <div style={{ padding: 16 }}>
+                <Alert type="error" message="加载失败" description={error} showIcon />
+            </div>
+        );
+    }
+
+    return (
+        <div style={{ display: 'flex', flexDirection: 'column', height: '100%' }}>
+            <div style={{ padding: '8px 16px', borderBottom: darkMode ? '1px solid #303030' : '1px solid #f0f0f0' }}>
+                <strong>{objectLabel}: </strong>{objectName}
+                {tab.dbName && <span style={{ marginLeft: 16, color: '#888' }}>数据库: {tab.dbName}</span>}
+                {tab.routineType && <span style={{ marginLeft: 16, color: '#888' }}>类型: {tab.routineType}</span>}
+            </div>
+            <div style={{ flex: 1, minHeight: 0 }}>
+                <Editor
+                    height="100%"
+                    language="sql"
+                    theme={darkMode ? 'transparent-dark' : 'transparent-light'}
+                    value={definition}
+                    options={{
+                        readOnly: true,
+                        minimap: { enabled: false },
+                        fontSize: 14,
+                        lineNumbers: 'on',
+                        scrollBeyondLastLine: false,
+                        wordWrap: 'on',
+                        automaticLayout: true,
+                    }}
+                />
+            </div>
+        </div>
+    );
+};
+
+export default DefinitionViewer;

frontend/src/components/ImportPreviewModal.tsx

@@ -0,0 +1,250 @@
+import React, { useState, useEffect } from 'react';
+import { Modal, Table, Alert, Progress, Button, Space } from 'antd';
+import { CheckCircleOutlined, CloseCircleOutlined } from '@ant-design/icons';
+import { PreviewImportFile, ImportDataWithProgress } from '../../wailsjs/go/app/App';
+import { EventsOn, EventsOff } from '../../wailsjs/runtime/runtime';
+import { useStore } from '../store';
+
+interface ImportPreviewModalProps {
+    visible: boolean;
+    filePath: string;
+    connectionId: string;
+    dbName: string;
+    tableName: string;
+    onClose: () => void;
+    onSuccess: () => void;
+}
+
+interface PreviewData {
+    columns: string[];
+    totalRows: number;
+    previewRows: any[];
+}
+
+interface ImportProgress {
+    current: number;
+    total: number;
+    success: number;
+    errors: number;
+}
+
+const ImportPreviewModal: React.FC<ImportPreviewModalProps> = ({
+    visible,
+    filePath,
+    connectionId,
+    dbName,
+    tableName,
+    onClose,
+    onSuccess
+}) => {
+    const connections = useStore(state => state.connections);
+    const [loading, setLoading] = useState(true);
+    const [previewData, setPreviewData] = useState<PreviewData | null>(null);
+    const [error, setError] = useState<string | null>(null);
+    const [importing, setImporting] = useState(false);
+    const [progress, setProgress] = useState<ImportProgress | null>(null);
+    const [importResult, setImportResult] = useState<any>(null);
+
+    useEffect(() => {
+        if (visible && filePath) {
+            loadPreview();
+        }
+    }, [visible, filePath]);
+
+    useEffect(() => {
+        if (importing) {
+            const unsubscribe = EventsOn('import:progress', (data: ImportProgress) => {
+                setProgress(data);
+            });
+            return () => {
+                EventsOff('import:progress');
+            };
+        }
+    }, [importing]);
+
+    const loadPreview = async () => {
+        setLoading(true);
+        setError(null);
+        try {
+            const res = await PreviewImportFile(filePath);
+            if (res.success && res.data) {
+                setPreviewData({
+                    columns: res.data.columns || [],
+                    totalRows: res.data.totalRows || 0,
+                    previewRows: res.data.previewRows || []
+                });
+            } else {
+                setError(res.message || '预览失败');
+            }
+        } catch (e: any) {
+            setError('预览失败: ' + e.message);
+        } finally {
+            setLoading(false);
+        }
+    };
+
+    const handleImport = async () => {
+        if (!previewData) return;
+
+        setImporting(true);
+        setProgress({ current: 0, total: previewData.totalRows, success: 0, errors: 0 });
+        setImportResult(null);
+
+        try {
+            const conn = connections.find(c => c.id === connectionId);
+            if (!conn) {
+                setError('连接配置未找到');
+                setImporting(false);
+                return;
+            }
+
+            const config = {
+                ...conn.config,
+                port: Number(conn.config.port),
+                password: conn.config.password || '',
+                database: conn.config.database || '',
+                useSSH: conn.config.useSSH || false,
+                ssh: conn.config.ssh || { host: '', port: 22, user: '', password: '', keyPath: '' }
+            };
+
+            const res = await ImportDataWithProgress(config as any, dbName, tableName, filePath);
+
+            if (res.success && res.data) {
+                setImportResult(res.data);
+                if (res.data.failed === 0) {
+                    onSuccess();
+                }
+            } else {
+                setError(res.message || '导入失败');
+            }
+        } catch (e: any) {
+            setError('导入失败: ' + e.message);
+        } finally {
+            setImporting(false);
+        }
+    };
+
+    const columns = previewData?.columns.map(col => ({
+        title: col,
+        dataIndex: col,
+        key: col,
+        ellipsis: true,
+        width: 150
+    })) || [];
+
+    const progressPercent = progress ? Math.round((progress.current / progress.total) * 100) : 0;
+
+    return (
+        <Modal
+            title="导入数据预览"
+            open={visible}
+            onCancel={onClose}
+            width={900}
+            footer={
+                importResult ? (
+                    <Space>
+                        <Button onClick={onClose}>关闭</Button>
+                    </Space>
+                ) : importing ? null : (
+                    <Space>
+                        <Button onClick={onClose}>取消</Button>
+                        <Button
+                            type="primary"
+                            onClick={handleImport}
+                            disabled={!previewData || loading}
+                        >
+                            开始导入
+                        </Button>
+                    </Space>
+                )
+            }
+        >
+            {error && <Alert type="error" message={error} style={{ marginBottom: 16 }} showIcon />}
+
+            {loading && <div style={{ textAlign: 'center', padding: 40 }}>加载预览数据...</div>}
+
+            {!loading && previewData && !importing && !importResult && (
+                <>
+                    <Alert
+                        type="info"
+                        message={`共 ${previewData.totalRows} 行数据，${previewData.columns.length} 个字段`}
+                        description='以下是前 5 行预览数据，确认无误后点击“开始导入”'
+                        style={{ marginBottom: 16 }}
+                        showIcon
+                    />
+                    <div style={{ marginBottom: 8, fontWeight: 600 }}>字段列表：</div>
+                    <div style={{ marginBottom: 16, padding: 8, background: '#f5f5f5', borderRadius: 4 }}>
+                        {previewData.columns.join(', ')}
+                    </div>
+                    <div style={{ marginBottom: 8, fontWeight: 600 }}>数据预览（前 5 行）：</div>
+                    <Table
+                        dataSource={previewData.previewRows}
+                        columns={columns}
+                        pagination={false}
+                        scroll={{ x: 'max-content' }}
+                        size="small"
+                        bordered
+                    />
+                </>
+            )}
+
+            {importing && progress && (
+                <div style={{ padding: '40px 20px' }}>
+                    <div style={{ marginBottom: 16, fontSize: 16, fontWeight: 600, textAlign: 'center' }}>
+                        正在导入数据...
+                    </div>
+                    <Progress percent={progressPercent} status="active" />
+                    <div style={{ marginTop: 16, textAlign: 'center', color: '#666' }}>
+                        已处理 {progress.current} / {progress.total} 行
+                        <span style={{ marginLeft: 16, color: '#52c41a' }}>
+                            <CheckCircleOutlined /> 成功 {progress.success}
+                        </span>
+                        {progress.errors > 0 && (
+                            <span style={{ marginLeft: 16, color: '#ff4d4f' }}>
+                                <CloseCircleOutlined /> 失败 {progress.errors}
+                            </span>
+                        )}
+                    </div>
+                </div>
+            )}
+
+            {importResult && (
+                <div style={{ padding: 20 }}>
+                    <Alert
+                        type={importResult.failed === 0 ? 'success' : 'warning'}
+                        message="导入完成"
+                        description={
+                            <div>
+                                <div>成功导入 {importResult.success} 行</div>
+                                {importResult.failed > 0 && <div>失败 {importResult.failed} 行</div>}
+                            </div>
+                        }
+                        showIcon
+                        style={{ marginBottom: 16 }}
+                    />
+                    {importResult.errorLogs && importResult.errorLogs.length > 0 && (
+                        <>
+                            <div style={{ marginBottom: 8, fontWeight: 600, color: '#ff4d4f' }}>错误日志：</div>
+                            <div style={{
+                                maxHeight: 300,
+                                overflow: 'auto',
+                                background: '#fff1f0',
+                                border: '1px solid #ffccc7',
+                                borderRadius: 4,
+                                padding: 12,
+                                fontSize: 12,
+                                fontFamily: 'monospace'
+                            }}>
+                                {importResult.errorLogs.map((log: string, idx: number) => (
+                                    <div key={idx} style={{ marginBottom: 4 }}>{log}</div>
+                                ))}
+                            </div>
+                        </>
+                    )}
+                </div>
+            )}
+        </Modal>
+    );
+};
+
+export default ImportPreviewModal;

frontend/src/components/LogPanel.tsx

@@ -2,7 +2,7 @@ import React, { useRef, useEffect } from 'react';
 import { Table, Tag, Button, Tooltip } from 'antd';
 import { ClearOutlined, CloseOutlined, CaretRightOutlined, BugOutlined } from '@ant-design/icons';
 import { useStore } from '../store';
-import { blurToFilter, normalizeBlurForPlatform, normalizeOpacityForPlatform } from '../utils/appearance';
+import { normalizeOpacityForPlatform } from '../utils/appearance';
 
 interface LogPanelProps {
     height: number;
@@ -17,7 +17,6 @@ const LogPanel: React.FC<LogPanelProps> = ({ height, onClose, onResizeStart }) =
     const appearance = useStore(state => state.appearance);
     const darkMode = theme === 'dark';
     const opacity = normalizeOpacityForPlatform(appearance.opacity);
-    const blur = normalizeBlurForPlatform(appearance.blur);
 
     // Background Helper
     const getBg = (darkHex: string) => {
@@ -30,7 +29,8 @@ const LogPanel: React.FC<LogPanelProps> = ({ height, onClose, onResizeStart }) =
     };
     const bgMain = getBg('#1f1f1f');
     const bgToolbar = getBg('#2a2a2a');
-    const blurFilter = blurToFilter(blur);
+    const logScrollbarThumb = darkMode ? 'rgba(255, 255, 255, 0.34)' : 'rgba(0, 0, 0, 0.26)';
+    const logScrollbarThumbHover = darkMode ? 'rgba(255, 255, 255, 0.5)' : 'rgba(0, 0, 0, 0.36)';
 
     const columns = [
         {
@@ -73,8 +73,6 @@ const LogPanel: React.FC<LogPanelProps> = ({ height, onClose, onResizeStart }) =
             height, 
             borderTop: 'none', 
             background: bgMain,
-            backdropFilter: blurFilter,
-            WebkitBackdropFilter: blurFilter,
             display: 'flex',
             flexDirection: 'column',
             position: 'relative',
@@ -117,8 +115,9 @@ const LogPanel: React.FC<LogPanelProps> = ({ height, onClose, onResizeStart }) =
             </div>
 
             {/* List */}
-            <div style={{ flex: 1, overflow: 'auto' }}>
+            <div className="log-panel-scroll" style={{ flex: 1, overflow: 'auto' }}>
                 <Table 
+                    className="log-panel-table"
                     dataSource={sqlLogs} 
                     columns={columns} 
                     size="small" 
@@ -128,6 +127,35 @@ const LogPanel: React.FC<LogPanelProps> = ({ height, onClose, onResizeStart }) =
                     // scroll={{ y: height - 32 }} // Let flex handle it
                 />
             </div>
+            <style>{`
+                .log-panel-scroll {
+                    scrollbar-width: thin;
+                    scrollbar-color: ${logScrollbarThumb} transparent;
+                }
+                .log-panel-scroll::-webkit-scrollbar {
+                    width: 10px;
+                    height: 10px;
+                }
+                .log-panel-scroll::-webkit-scrollbar-track,
+                .log-panel-scroll::-webkit-scrollbar-corner {
+                    background: transparent;
+                }
+                .log-panel-scroll::-webkit-scrollbar-thumb {
+                    background: ${logScrollbarThumb};
+                    border-radius: 8px;
+                    border: 2px solid transparent;
+                    background-clip: padding-box;
+                }
+                .log-panel-scroll::-webkit-scrollbar-thumb:hover {
+                    background: ${logScrollbarThumbHover};
+                    background-clip: padding-box;
+                }
+                .log-panel-table .ant-table,
+                .log-panel-table .ant-table-container,
+                .log-panel-table .ant-table-tbody > tr > td {
+                    background: transparent !important;
+                }
+            `}</style>
         </div>
     );
 };

frontend/src/components/QueryEditor.tsx

@@ -196,6 +196,9 @@ const QueryEditor: React.FC<{ tab: TabData }> = ({ tab }) => {
       editorRef.current = editor;
       monacoRef.current = monaco;
 
+      // 应用透明主题（主题已在 main.tsx 全局注册）
+      monaco.editor.setTheme(darkMode ? 'transparent-dark' : 'transparent-light');
+
       monaco.languages.registerCompletionItemProvider('sql', {
           triggerCharacters: ['.'],
           provideCompletionItems: async (model: any, position: any) => {
@@ -919,7 +922,7 @@ const QueryEditor: React.FC<{ tab: TabData }> = ({ tab }) => {
 
   const applyAutoLimit = (sql: string, dbType: string, maxRows: number): { sql: string; applied: boolean; maxRows: number } => {
       const normalizedType = (dbType || 'mysql').toLowerCase();
-      const supportsLimit = normalizedType === 'mysql' || normalizedType === 'postgres' || normalizedType === 'kingbase' || normalizedType === 'sqlite' || normalizedType === 'tdengine' || normalizedType === '';
+      const supportsLimit = normalizedType === 'mysql' || normalizedType === 'mariadb' || normalizedType === 'sphinx' || normalizedType === 'postgres' || normalizedType === 'kingbase' || normalizedType === 'sqlite' || normalizedType === 'tdengine' || normalizedType === '';
       if (!supportsLimit) return { sql, applied: false, maxRows };
       if (!Number.isFinite(maxRows) || maxRows <= 0) return { sql, applied: false, maxRows };
 
@@ -1211,7 +1214,7 @@ const QueryEditor: React.FC<{ tab: TabData }> = ({ tab }) => {
           transition: none !important;
         }
       `}</style>
-      <div style={{ padding: '8px', borderBottom: '1px solid #eee', display: 'flex', gap: '8px', flexShrink: 0, alignItems: 'center' }}>
+      <div style={{ padding: '8px', display: 'flex', gap: '8px', flexShrink: 0, alignItems: 'center' }}>
         <Select 
             style={{ width: 150 }} 
             placeholder="选择连接"
@@ -1265,11 +1268,11 @@ const QueryEditor: React.FC<{ tab: TabData }> = ({ tab }) => {
         </Button.Group>
       </div>
       
-      <div style={{ height: editorHeight, minHeight: '100px', borderBottom: '1px solid #eee' }}>
+      <div style={{ height: editorHeight, minHeight: '100px' }}>
         <Editor 
           height="100%" 
           defaultLanguage="sql" 
-          theme={darkMode ? "vs-dark" : "light"}
+          theme={darkMode ? "transparent-dark" : "transparent-light"}
           value={query} 
           onChange={(val) => setQuery(val || '')}
           onMount={handleEditorDidMount}
@@ -1287,7 +1290,7 @@ const QueryEditor: React.FC<{ tab: TabData }> = ({ tab }) => {
         style={{ 
             height: '5px', 
             cursor: 'row-resize', 
-            background: darkMode ? '#333' : '#f0f0f0',
+            background: darkMode ? 'rgba(255,255,255,0.08)' : 'rgba(0,0,0,0.04)',
             flexShrink: 0,
             zIndex: 10 
         }} 

frontend/src/components/TabManager.tsx

@@ -8,9 +8,30 @@ import TableDesigner from './TableDesigner';
 import RedisViewer from './RedisViewer';
 import RedisCommandEditor from './RedisCommandEditor';
 import TriggerViewer from './TriggerViewer';
+import DefinitionViewer from './DefinitionViewer';
+import type { TabData } from '../types';
+
+const detectConnectionEnvLabel = (connectionName: string): string | null => {
+  const tokens = connectionName.toLowerCase().split(/[^a-z0-9]+/).filter(Boolean);
+  if (tokens.includes('prod') || tokens.includes('production')) return 'PROD';
+  if (tokens.includes('uat')) return 'UAT';
+  if (tokens.includes('dev') || tokens.includes('development')) return 'DEV';
+  if (tokens.includes('sit')) return 'SIT';
+  if (tokens.includes('stg') || tokens.includes('stage') || tokens.includes('staging') || tokens.includes('pre')) return 'STG';
+  if (tokens.includes('test') || tokens.includes('qa')) return 'TEST';
+  return null;
+};
+
+const buildTabDisplayTitle = (tab: TabData, connectionName: string | undefined): string => {
+  if (tab.type !== 'table' && tab.type !== 'design') return tab.title;
+  if (!connectionName) return tab.title;
+  const prefix = detectConnectionEnvLabel(connectionName) || connectionName;
+  return `[${prefix}] ${tab.title}`;
+};
 
 const TabManager: React.FC = () => {
   const tabs = useStore(state => state.tabs);
+  const connections = useStore(state => state.connections);
   const activeTabId = useStore(state => state.activeTabId);
   const setActiveTab = useStore(state => state.setActiveTab);
   const closeTab = useStore(state => state.closeTab);
@@ -30,6 +51,8 @@ const TabManager: React.FC = () => {
   };
 
   const items = useMemo(() => tabs.map((tab, index) => {
+    const connectionName = connections.find((conn) => conn.id === tab.connectionId)?.name;
+    const displayTitle = buildTabDisplayTitle(tab, connectionName);
     let content;
     if (tab.type === 'query') {
       content = <QueryEditor tab={tab} />;
@@ -43,6 +66,8 @@ const TabManager: React.FC = () => {
       content = <RedisCommandEditor connectionId={tab.connectionId} redisDB={tab.redisDB ?? 0} />;
     } else if (tab.type === 'trigger') {
       content = <TriggerViewer tab={tab} />;
+    } else if (tab.type === 'view-def' || tab.type === 'routine-def') {
+      content = <DefinitionViewer tab={tab} />;
     }
 
     const menuItems: MenuProps['items'] = [
@@ -76,13 +101,13 @@ const TabManager: React.FC = () => {
     return {
       label: (
         <Dropdown menu={{ items: menuItems }} trigger={['contextMenu']}>
-          <span onContextMenu={(e) => e.preventDefault()}>{tab.title}</span>
+          <span onContextMenu={(e) => e.preventDefault()}>{displayTitle}</span>
         </Dropdown>
       ),
       key: tab.id,
       children: content,
     };
-  }), [tabs, closeOtherTabs, closeTabsToLeft, closeTabsToRight, closeAllTabs]);
+  }), [tabs, connections, closeOtherTabs, closeTabsToLeft, closeTabsToRight, closeAllTabs]);
 
   return (
     <>

frontend/src/components/TableDesigner.tsx

@@ -1,18 +1,14 @@
-import React, { useEffect, useState, useContext, useMemo, useRef } from 'react';
+import React, { useEffect, useState, useContext, useMemo, useRef, useCallback } from 'react';
 import { Table, Tabs, Button, message, Input, Checkbox, Modal, AutoComplete, Tooltip, Select, Empty, Space } from 'antd';
 import { ReloadOutlined, SaveOutlined, PlusOutlined, DeleteOutlined, MenuOutlined, FileTextOutlined, EyeOutlined, EditOutlined, ExclamationCircleOutlined } from '@ant-design/icons';
 import { DndContext, closestCenter, KeyboardSensor, PointerSensor, useSensor, useSensors, DragOverlay } from '@dnd-kit/core';
 import { arrayMove, SortableContext, sortableKeyboardCoordinates, verticalListSortingStrategy, useSortable } from '@dnd-kit/sortable';
 import { CSS } from '@dnd-kit/utilities';
-import { Resizable } from 'react-resizable';
 import Editor, { loader } from '@monaco-editor/react';
 import { TabData, ColumnDefinition, IndexDefinition, ForeignKeyDefinition, TriggerDefinition } from '../types';
 import { useStore } from '../store';
 import { DBGetColumns, DBGetIndexes, DBQuery, DBGetForeignKeys, DBGetTriggers, DBShowCreateTable } from '../../wailsjs/go/app/App';
 
-// Need styles for react-resizable
-import 'react-resizable/css/styles.css';
-
 interface EditableColumn extends ColumnDefinition {
     _key: string;
     isNew?: boolean;
@@ -58,45 +54,43 @@ const COLLATIONS = {
     ]
 };
 
-// --- Resizable Header Component ---
+// --- Resizable Header Component (Native, same interaction as DataGrid) ---
 const ResizableTitle = (props: any) => {
-  const { onResize, width, ...restProps } = props;
+  const { onResizeStart, width, ...restProps } = props;
+  const nextStyle = { ...(restProps.style || {}) } as React.CSSProperties;
+
+  if (width) {
+    nextStyle.width = width;
+  }
 
   if (!width) {
-    return <th {...restProps} />;
+    return <th {...restProps} style={nextStyle} />;
   }
 
   return (
-    <Resizable
-      width={width}
-      height={0}
-      handle={
-        <span
-          className="react-resizable-handle"
-          onClick={(e) => {
-            e.stopPropagation();
-            e.preventDefault();
-          }}
-          onMouseDown={(e) => {
-            e.stopPropagation();
-            e.preventDefault(); // Prevent text selection and focus hijacking
-          }}
-          style={{
-              position: 'absolute',
-              right: -5,
-              bottom: 0,
-              top: 0,
-              width: 10,
-              cursor: 'col-resize',
-              zIndex: 10
-          }}
-        />
-      }
-      onResize={onResize}
-      draggableOpts={{ enableUserSelectHack: true }}
-    >
-      <th {...restProps} style={{ ...restProps.style, position: 'relative' }} />
-    </Resizable>
+    <th {...restProps} style={{ ...nextStyle, position: 'relative' }}>
+      {restProps.children}
+      <span
+        className="react-resizable-handle"
+        onMouseDown={(e) => {
+          e.stopPropagation();
+          if (typeof onResizeStart === 'function') {
+            onResizeStart(e);
+          }
+        }}
+        onClick={(e) => e.stopPropagation()}
+        style={{
+          position: 'absolute',
+          right: 0,
+          bottom: 0,
+          top: 0,
+          width: 10,
+          cursor: 'col-resize',
+          zIndex: 10,
+          touchAction: 'none',
+        }}
+      />
+    </th>
   );
 };
 
@@ -218,6 +212,14 @@ const TableDesigner: React.FC<{ tab: TabData }> = ({ tab }) => {
 
   // --- Resizable Columns State ---
   const [tableColumns, setTableColumns] = useState<any[]>([]);
+  const resizeDragRef = useRef<{ startX: number; startWidth: number; index: number; containerLeft: number } | null>(null);
+  const resizeRafRef = useRef<number | null>(null);
+  const latestResizeXRef = useRef<number | null>(null);
+  const ghostRef = useRef<HTMLDivElement>(null);
+  const resizeListenerRef = useRef<{ move: ((e: MouseEvent) => void) | null; up: ((e: MouseEvent) => void) | null }>({
+    move: null,
+    up: null,
+  });
 
   const sensors = useSensors(
     useSensor(PointerSensor),
@@ -318,25 +320,97 @@ const TableDesigner: React.FC<{ tab: TabData }> = ({ tab }) => {
       setTableColumns(initialCols);
   }, [readOnly]); // Re-create if readOnly changes
 
-  const rafRef = React.useRef<number | null>(null);
+  const flushResizeGhost = useCallback(() => {
+    resizeRafRef.current = null;
+    if (!resizeDragRef.current || !ghostRef.current) return;
+    if (latestResizeXRef.current === null) return;
+    const relativeLeft = latestResizeXRef.current - resizeDragRef.current.containerLeft;
+    ghostRef.current.style.transform = `translateX(${relativeLeft}px)`;
+  }, []);
 
-  // Resize Handler
-  const handleResize = (index: number) => (_: React.SyntheticEvent, { size }: { size: { width: number } }) => {
-      if (rafRef.current) {
-          cancelAnimationFrame(rafRef.current);
-      }
-      rafRef.current = requestAnimationFrame(() => {
-        setTableColumns((columns) => {
-            const nextColumns = [...columns];
-            nextColumns[index] = {
-                ...nextColumns[index],
-                width: size.width,
-            };
-            return nextColumns;
+  const detachResizeListeners = useCallback(() => {
+    if (resizeListenerRef.current.move) {
+      document.removeEventListener('mousemove', resizeListenerRef.current.move);
+      resizeListenerRef.current.move = null;
+    }
+    if (resizeListenerRef.current.up) {
+      document.removeEventListener('mouseup', resizeListenerRef.current.up);
+      resizeListenerRef.current.up = null;
+    }
+  }, []);
+
+  const cleanupResizeState = useCallback(() => {
+    if (resizeRafRef.current !== null) {
+      cancelAnimationFrame(resizeRafRef.current);
+      resizeRafRef.current = null;
+    }
+    latestResizeXRef.current = null;
+    resizeDragRef.current = null;
+    if (ghostRef.current) {
+      ghostRef.current.style.display = 'none';
+    }
+    document.body.style.cursor = '';
+    document.body.style.userSelect = '';
+  }, []);
+
+  const handleResizeStart = useCallback((index: number) => (e: React.MouseEvent) => {
+    e.preventDefault();
+    e.stopPropagation();
+
+    const startX = e.clientX;
+    const currentWidth = Number(tableColumns[index]?.width || 200);
+    const containerLeft = containerRef.current?.getBoundingClientRect().left ?? 0;
+    resizeDragRef.current = { startX, startWidth: currentWidth, index, containerLeft };
+    latestResizeXRef.current = startX;
+
+    if (ghostRef.current && containerRef.current) {
+      const relativeLeft = startX - containerLeft;
+      ghostRef.current.style.transform = `translateX(${relativeLeft}px)`;
+      ghostRef.current.style.display = 'block';
+    }
+
+    detachResizeListeners();
+
+    const onMove = (event: MouseEvent) => {
+      if (!resizeDragRef.current) return;
+      latestResizeXRef.current = event.clientX;
+      if (resizeRafRef.current !== null) return;
+      resizeRafRef.current = requestAnimationFrame(flushResizeGhost);
+    };
+
+    const onUp = (event: MouseEvent) => {
+      if (resizeDragRef.current) {
+        const { startX: dragStartX, startWidth, index: dragIndex } = resizeDragRef.current;
+        const deltaX = event.clientX - dragStartX;
+        const newWidth = Math.max(50, startWidth + deltaX);
+        setTableColumns((prevColumns) => {
+          if (!prevColumns[dragIndex]) return prevColumns;
+          const nextColumns = [...prevColumns];
+          nextColumns[dragIndex] = {
+            ...nextColumns[dragIndex],
+            width: newWidth,
+          };
+          return nextColumns;
         });
-        rafRef.current = null;
-      });
-  };
+      }
+
+      detachResizeListeners();
+      cleanupResizeState();
+    };
+
+    resizeListenerRef.current = { move: onMove, up: onUp };
+    document.addEventListener('mousemove', onMove);
+    document.addEventListener('mouseup', onUp);
+    document.body.style.cursor = 'col-resize';
+    document.body.style.userSelect = 'none';
+  }, [cleanupResizeState, detachResizeListeners, flushResizeGhost, tableColumns]);
+
+  useEffect(() => {
+    return () => {
+      detachResizeListeners();
+      cleanupResizeState();
+    };
+  }, [cleanupResizeState, detachResizeListeners]);
 
   const fetchData = async () => {
     if (isNewTable) return; // Don't fetch for new table
@@ -405,7 +479,7 @@ const TableDesigner: React.FC<{ tab: TabData }> = ({ tab }) => {
   const getDbType = (): string => {
     const conn = connections.find(c => c.id === tab.connectionId);
     const type = String(conn?.config?.type || '').toLowerCase();
-    if (type === 'mariadb') return 'mysql';
+    if (type === 'mariadb' || type === 'sphinx') return 'mysql';
     if (type === 'dameng') return 'dm';
     return type;
   };
@@ -786,7 +860,7 @@ ${selectedTrigger.statement}`;
     ...col,
     onHeaderCell: (column: any) => ({
       width: column.width,
-      onResize: handleResize(index),
+      onResizeStart: handleResizeStart(index),
     }),
   }));
 
@@ -833,6 +907,21 @@ ${selectedTrigger.statement}`;
         </SortableContext>
       </DndContext>
   )}
+        <div
+          ref={ghostRef}
+          style={{
+            position: 'absolute',
+            top: 0,
+            bottom: 0,
+            left: 0,
+            width: '2px',
+            background: '#1890ff',
+            zIndex: 9999,
+            display: 'none',
+            pointerEvents: 'none',
+            willChange: 'transform',
+          }}
+        />
   </div>
   );
 

frontend/src/components/TriggerViewer.tsx

@@ -52,47 +52,121 @@ const TriggerViewer: React.FC<TriggerViewerProps> = ({ tab }) => {
         if (type === 'custom') {
             return String(conn?.config?.driver || '').trim().toLowerCase();
         }
-        if (type === 'mariadb') return 'mysql';
+        if (type === 'mariadb' || type === 'sphinx') return 'mysql';
         if (type === 'dameng') return 'dm';
         return type;
     };
 
-    const buildShowTriggerQuery = (dialect: string, triggerName: string, dbName: string): string => {
+    const isSphinxConnection = (conn: any): boolean => {
+        const type = String(conn?.config?.type || '').trim().toLowerCase();
+        if (type === 'sphinx') return true;
+        if (type !== 'custom') return false;
+        const driver = String(conn?.config?.driver || '').trim().toLowerCase();
+        return driver === 'sphinx' || driver === 'sphinxql';
+    };
+
+    const buildShowTriggerQueries = (dialect: string, triggerName: string, dbName: string): string[] => {
         const safeTriggerName = escapeSQLLiteral(triggerName);
         const safeDbName = escapeSQLLiteral(dbName);
         switch (dialect) {
             case 'mysql':
-                return `SHOW CREATE TRIGGER \`${triggerName.replace(/`/g, '``')}\``;
+                return [
+                    `SHOW CREATE TRIGGER \`${triggerName.replace(/`/g, '``')}\``,
+                    safeDbName
+                        ? `SELECT ACTION_STATEMENT AS trigger_definition FROM information_schema.triggers WHERE trigger_schema = '${safeDbName}' AND trigger_name = '${safeTriggerName}' LIMIT 1`
+                        : '',
+                    safeDbName
+                        ? `SHOW TRIGGERS FROM \`${dbName.replace(/`/g, '``')}\` LIKE '${safeTriggerName}'`
+                        : `SHOW TRIGGERS LIKE '${safeTriggerName}'`,
+                ].filter(Boolean);
             case 'postgres':
             case 'kingbase':
             case 'highgo':
             case 'vastbase':
-                return `SELECT pg_get_triggerdef(t.oid, true) AS trigger_definition
+                return [`SELECT pg_get_triggerdef(t.oid, true) AS trigger_definition
 FROM pg_trigger t
 JOIN pg_class c ON t.tgrelid = c.oid
 WHERE t.tgname = '${safeTriggerName}'
   AND NOT t.tgisinternal
-LIMIT 1`;
+LIMIT 1`];
             case 'sqlserver': {
-                return `SELECT OBJECT_DEFINITION(OBJECT_ID('${safeTriggerName.replace(/'/g, "''")}')) AS trigger_definition`;
+                return [`SELECT OBJECT_DEFINITION(OBJECT_ID('${safeTriggerName.replace(/'/g, "''")}')) AS trigger_definition`];
             }
             case 'oracle':
             case 'dm':
                 if (!safeDbName) {
-                    return `SELECT TRIGGER_BODY FROM USER_TRIGGERS WHERE TRIGGER_NAME = '${safeTriggerName.toUpperCase()}'`;
+                    return [`SELECT TRIGGER_BODY FROM USER_TRIGGERS WHERE TRIGGER_NAME = '${safeTriggerName.toUpperCase()}'`];
                 }
-                return `SELECT TRIGGER_BODY FROM ALL_TRIGGERS WHERE OWNER = '${safeDbName.toUpperCase()}' AND TRIGGER_NAME = '${safeTriggerName.toUpperCase()}'`;
+                return [`SELECT TRIGGER_BODY FROM ALL_TRIGGERS WHERE OWNER = '${safeDbName.toUpperCase()}' AND TRIGGER_NAME = '${safeTriggerName.toUpperCase()}'`];
             case 'sqlite':
-                return `SELECT sql FROM sqlite_master WHERE type = 'trigger' AND name = '${safeTriggerName}'`;
+                return [`SELECT sql FROM sqlite_master WHERE type = 'trigger' AND name = '${safeTriggerName}'`];
             case 'tdengine':
-                return `-- TDengine 不支持触发器`;
+                return [`-- TDengine 不支持触发器`];
             case 'mongodb':
-                return `-- MongoDB 不支持触发器`;
+                return [`-- MongoDB 不支持触发器`];
             default:
-                return `-- 暂不支持该数据库类型的触发器定义查看`;
+                return [`-- 暂不支持该数据库类型的触发器定义查看`];
         }
     };
 
+    const runQueryCandidates = async (
+        config: Record<string, any>,
+        dbName: string,
+        queries: string[]
+    ): Promise<{ success: boolean; data: any[]; message?: string }> => {
+        let lastMessage = '';
+        let hasSuccessfulQuery = false;
+        for (const query of queries) {
+            const sql = String(query || '').trim();
+            if (!sql) continue;
+            try {
+                const result = await DBQuery(config as any, dbName, sql);
+                if (!result.success || !Array.isArray(result.data)) {
+                    lastMessage = result.message || lastMessage;
+                    continue;
+                }
+                hasSuccessfulQuery = true;
+                if (result.data.length > 0) {
+                    return { success: true, data: result.data };
+                }
+            } catch (error: any) {
+                lastMessage = error?.message || String(error);
+            }
+        }
+        if (hasSuccessfulQuery) {
+            return { success: true, data: [] };
+        }
+        return { success: false, data: [], message: lastMessage };
+    };
+
+    const getVersionHint = async (config: Record<string, any>, dbName: string): Promise<string> => {
+        const candidates = [
+            `SELECT VERSION() AS version`,
+            `SHOW VARIABLES LIKE 'version'`,
+        ];
+        for (const query of candidates) {
+            try {
+                const result = await DBQuery(config as any, dbName, query);
+                if (!result.success || !Array.isArray(result.data) || result.data.length === 0) {
+                    continue;
+                }
+                const row = result.data[0] as Record<string, any>;
+                const version =
+                    row.version
+                    || row.VERSION
+                    || row.Value
+                    || row.value
+                    || Object.values(row)[1]
+                    || Object.values(row)[0];
+                const text = String(version || '').trim();
+                if (text) return text;
+            } catch {
+                // ignore
+            }
+        }
+        return '';
+    };
+
     const extractTriggerDefinition = (dialect: string, data: any[]): string => {
         if (!data || data.length === 0) {
             return '-- 未找到触发器定义';
@@ -104,6 +178,12 @@ LIMIT 1`;
             case 'mysql': {
                 // MySQL SHOW CREATE TRIGGER returns: Trigger, sql_mode, SQL Original Statement, ...
                 const keys = Object.keys(row);
+                if (row.trigger_definition || row.TRIGGER_DEFINITION) {
+                    return String(row.trigger_definition || row.TRIGGER_DEFINITION);
+                }
+                if (row.ACTION_STATEMENT || row.action_statement) {
+                    return String(row.ACTION_STATEMENT || row.action_statement);
+                }
                 const sqlKey = keys.find(k => k.toLowerCase().includes('statement') || k.toLowerCase() === 'sql original statement');
                 if (sqlKey) return row[sqlKey];
                 // Fallback: try to find any key containing CREATE TRIGGER
@@ -158,10 +238,11 @@ LIMIT 1`;
             }
 
             const dialect = getMetadataDialect(conn);
-            const query = buildShowTriggerQuery(dialect, triggerName, dbName);
+            const queries = buildShowTriggerQueries(dialect, triggerName, dbName);
+            const sphinxLike = isSphinxConnection(conn) && dialect === 'mysql';
 
-            if (query.startsWith('--')) {
-                setTriggerDefinition(query);
+            if (!queries.length || String(queries[0] || '').startsWith('--')) {
+                setTriggerDefinition(String(queries[0] || '-- 暂不支持该数据库类型的触发器定义查看'));
                 setLoading(false);
                 return;
             }
@@ -176,11 +257,26 @@ LIMIT 1`;
                     ssh: conn.config.ssh || { host: '', port: 22, user: '', password: '', keyPath: '' }
                 };
 
-                const result = await DBQuery(config as any, dbName, query);
+                const result = await runQueryCandidates(config, dbName, queries);
 
-                if (result.success && Array.isArray(result.data)) {
+                if (result.success && Array.isArray(result.data) && result.data.length > 0) {
                     const definition = extractTriggerDefinition(dialect, result.data);
                     setTriggerDefinition(definition);
+                    return;
+                }
+
+                if (result.success) {
+                    if (sphinxLike) {
+                        const version = await getVersionHint(config, dbName);
+                        const versionText = version ? `（版本: ${version}）` : '';
+                        setTriggerDefinition(`-- 当前 Sphinx 实例${versionText}未返回触发器定义。\n-- 已执行多套兼容查询，可能是版本能力限制或对象类型不支持。`);
+                        return;
+                    }
+                    setTriggerDefinition('-- 未找到触发器定义');
+                } else if (sphinxLike) {
+                    const version = await getVersionHint(config, dbName);
+                    const versionText = version ? `（版本: ${version}）` : '';
+                    setTriggerDefinition(`-- 当前 Sphinx 实例${versionText}不支持触发器定义查询。\n-- 已自动尝试兼容语句，返回失败信息: ${result.message || 'unknown error'}`);
                 } else {
                     setError(result.message || '查询触发器定义失败');
                 }

frontend/src/main.tsx

@@ -3,6 +3,22 @@ import ReactDOM from 'react-dom/client'
 import App from './App'
 // import './index.css' // Optional global styles
 
+// 全局配置 Monaco Editor 使用本地打包的文件，避免从 CDN (jsdelivr) 加载。
+// Windows WebView2 环境下访问外部 CDN 可能失败，导致编辑器一直显示 Loading。
+import { loader } from '@monaco-editor/react'
+import * as monaco from 'monaco-editor'
+loader.config({ monaco })
+
+// 全局注册透明主题，避免每个 Editor 组件 beforeMount 中重复定义
+monaco.editor.defineTheme('transparent-dark', {
+  base: 'vs-dark', inherit: true, rules: [],
+  colors: { 'editor.background': '#00000000', 'editor.lineHighlightBackground': '#ffffff10', 'editorGutter.background': '#00000000' }
+})
+monaco.editor.defineTheme('transparent-light', {
+  base: 'vs', inherit: true, rules: [],
+  colors: { 'editor.background': '#00000000', 'editor.lineHighlightBackground': '#00000010', 'editorGutter.background': '#00000000' }
+})
+
 ReactDOM.createRoot(document.getElementById('root')!).render(
   <React.StrictMode>
     <App />

frontend/src/store.ts

@@ -1,10 +1,230 @@
 import { create } from 'zustand';
 import { persist } from 'zustand/middleware';
-import { SavedConnection, TabData, SavedQuery } from './types';
+import { ConnectionConfig, SavedConnection, TabData, SavedQuery } from './types';
 
 const DEFAULT_APPEARANCE = { opacity: 1.0, blur: 0 };
 const LEGACY_DEFAULT_OPACITY = 0.95;
 const OPACITY_EPSILON = 1e-6;
+const MAX_URI_LENGTH = 4096;
+const MAX_HOST_ENTRY_LENGTH = 512;
+const MAX_HOST_ENTRIES = 64;
+const DEFAULT_TIMEOUT_SECONDS = 30;
+const MAX_TIMEOUT_SECONDS = 3600;
+const DEFAULT_CONNECTION_TYPE = 'mysql';
+const SUPPORTED_CONNECTION_TYPES = new Set([
+  'mysql',
+  'mariadb',
+  'sphinx',
+  'postgres',
+  'redis',
+  'tdengine',
+  'oracle',
+  'dameng',
+  'kingbase',
+  'sqlserver',
+  'mongodb',
+  'highgo',
+  'vastbase',
+  'sqlite',
+  'custom',
+]);
+
+const getDefaultPortByType = (type: string): number => {
+  switch (type) {
+    case 'mysql':
+    case 'mariadb':
+      return 3306;
+    case 'sphinx':
+      return 9306;
+    case 'postgres':
+    case 'vastbase':
+      return 5432;
+    case 'redis':
+      return 6379;
+    case 'tdengine':
+      return 6041;
+    case 'oracle':
+      return 1521;
+    case 'dameng':
+      return 5236;
+    case 'kingbase':
+      return 54321;
+    case 'sqlserver':
+      return 1433;
+    case 'mongodb':
+      return 27017;
+    case 'highgo':
+      return 5866;
+    default:
+      return 3306;
+  }
+};
+
+const toTrimmedString = (value: unknown, fallback = ''): string => {
+  if (typeof value === 'string') {
+    return value.trim();
+  }
+  if (typeof value === 'number' || typeof value === 'boolean') {
+    return String(value).trim();
+  }
+  return fallback;
+};
+
+const normalizePort = (value: unknown, fallbackPort: number): number => {
+  const parsed = Number(value);
+  if (!Number.isFinite(parsed)) return fallbackPort;
+  const port = Math.trunc(parsed);
+  if (port <= 0 || port > 65535) return fallbackPort;
+  return port;
+};
+
+const normalizeIntegerInRange = (value: unknown, fallbackValue: number, min: number, max: number): number => {
+  const parsed = Number(value);
+  if (!Number.isFinite(parsed)) return fallbackValue;
+  const normalized = Math.trunc(parsed);
+  if (normalized < min || normalized > max) return fallbackValue;
+  return normalized;
+};
+
+const isValidHostEntry = (entry: string): boolean => {
+  if (!entry) return false;
+  if (entry.length > MAX_HOST_ENTRY_LENGTH) return false;
+  if (/[()\\/\s]/.test(entry)) return false;
+  return true;
+};
+
+const sanitizeStringArray = (value: unknown, maxLength = 256): string[] => {
+  if (!Array.isArray(value)) return [];
+  const seen = new Set<string>();
+  const result: string[] = [];
+  value.forEach((entry) => {
+    const normalized = toTrimmedString(entry);
+    if (!normalized || normalized.length > maxLength) return;
+    if (seen.has(normalized)) return;
+    seen.add(normalized);
+    result.push(normalized);
+  });
+  return result;
+};
+
+const sanitizeNumberArray = (value: unknown, min: number, max: number): number[] => {
+  if (!Array.isArray(value)) return [];
+  const seen = new Set<number>();
+  const result: number[] = [];
+  value.forEach((entry) => {
+    const parsed = Number(entry);
+    if (!Number.isFinite(parsed)) return;
+    const num = Math.trunc(parsed);
+    if (num < min || num > max) return;
+    if (seen.has(num)) return;
+    seen.add(num);
+    result.push(num);
+  });
+  return result;
+};
+
+const sanitizeAddressList = (value: unknown): string[] => {
+  const all = sanitizeStringArray(value, MAX_HOST_ENTRY_LENGTH)
+    .filter((entry) => isValidHostEntry(entry));
+  return all.slice(0, MAX_HOST_ENTRIES);
+};
+
+const normalizeConnectionType = (value: unknown): string => {
+  const type = toTrimmedString(value).toLowerCase();
+  return SUPPORTED_CONNECTION_TYPES.has(type) ? type : DEFAULT_CONNECTION_TYPE;
+};
+
+const sanitizeConnectionConfig = (value: unknown): ConnectionConfig => {
+  const raw = (value && typeof value === 'object') ? value as Record<string, unknown> : {};
+  const type = normalizeConnectionType(raw.type);
+  const defaultPort = getDefaultPortByType(type);
+  const savePassword = typeof raw.savePassword === 'boolean' ? raw.savePassword : true;
+  const mongoSrv = !!raw.mongoSrv;
+
+  const sshRaw = (raw.ssh && typeof raw.ssh === 'object') ? raw.ssh as Record<string, unknown> : {};
+  const ssh = {
+    host: toTrimmedString(sshRaw.host),
+    port: normalizePort(sshRaw.port, 22),
+    user: toTrimmedString(sshRaw.user),
+    password: toTrimmedString(sshRaw.password),
+    keyPath: toTrimmedString(sshRaw.keyPath),
+  };
+
+  const safeConfig: ConnectionConfig & Record<string, unknown> = {
+    ...raw,
+    type,
+    host: toTrimmedString(raw.host, 'localhost') || 'localhost',
+    port: normalizePort(raw.port, defaultPort),
+    user: toTrimmedString(raw.user),
+    password: savePassword ? toTrimmedString(raw.password) : '',
+    savePassword,
+    database: toTrimmedString(raw.database),
+    useSSH: !!raw.useSSH,
+    ssh,
+    uri: toTrimmedString(raw.uri).slice(0, MAX_URI_LENGTH),
+    hosts: sanitizeAddressList(raw.hosts),
+    topology: raw.topology === 'replica' ? 'replica' : 'single',
+    mysqlReplicaUser: toTrimmedString(raw.mysqlReplicaUser),
+    mysqlReplicaPassword: savePassword ? toTrimmedString(raw.mysqlReplicaPassword) : '',
+    replicaSet: toTrimmedString(raw.replicaSet),
+    authSource: toTrimmedString(raw.authSource),
+    readPreference: toTrimmedString(raw.readPreference),
+    mongoSrv,
+    mongoAuthMechanism: toTrimmedString(raw.mongoAuthMechanism),
+    mongoReplicaUser: toTrimmedString(raw.mongoReplicaUser),
+    mongoReplicaPassword: savePassword ? toTrimmedString(raw.mongoReplicaPassword) : '',
+    timeout: normalizeIntegerInRange(raw.timeout, DEFAULT_TIMEOUT_SECONDS, 1, MAX_TIMEOUT_SECONDS),
+  };
+
+  if (type === 'redis') {
+    safeConfig.redisDB = normalizeIntegerInRange(raw.redisDB, 0, 0, 15);
+  }
+
+  if (type === 'custom') {
+    safeConfig.driver = toTrimmedString(raw.driver);
+    safeConfig.dsn = toTrimmedString(raw.dsn).slice(0, MAX_URI_LENGTH);
+  }
+
+  return safeConfig;
+};
+
+const sanitizeSavedConnection = (value: unknown, index: number): SavedConnection | null => {
+  if (!value || typeof value !== 'object') return null;
+  const raw = value as Record<string, unknown>;
+  const config = sanitizeConnectionConfig(raw.config);
+  const id = toTrimmedString(raw.id, `conn-${index + 1}`) || `conn-${index + 1}`;
+  const fallbackName = config.host ? `${config.type}-${config.host}` : `连接-${index + 1}`;
+  const name = toTrimmedString(raw.name, fallbackName) || fallbackName;
+  const includeDatabases = sanitizeStringArray(raw.includeDatabases, 256);
+  const includeRedisDatabases = sanitizeNumberArray(raw.includeRedisDatabases, 0, 15);
+
+  return {
+    id,
+    name,
+    config,
+    includeDatabases: includeDatabases.length > 0 ? includeDatabases : undefined,
+    includeRedisDatabases: includeRedisDatabases.length > 0 ? includeRedisDatabases : undefined,
+  };
+};
+
+const sanitizeConnections = (value: unknown): SavedConnection[] => {
+  if (!Array.isArray(value)) return [];
+  const result: SavedConnection[] = [];
+  const idSet = new Set<string>();
+
+  value.forEach((entry, index) => {
+    const conn = sanitizeSavedConnection(entry, index);
+    if (!conn) return;
+    let nextId = conn.id;
+    if (idSet.has(nextId)) {
+      nextId = `${nextId}-${index + 1}`;
+    }
+    idSet.add(nextId);
+    result.push({ ...conn, id: nextId });
+  });
+
+  return result;
+};
 
 const isLegacyDefaultAppearance = (appearance: Partial<{ opacity: number; blur: number }> | undefined): boolean => {
   if (!appearance) {
@@ -68,6 +288,82 @@ interface AppState {
   setTableSortPreference: (connectionId: string, dbName: string, sortBy: 'name' | 'frequency') => void;
 }
 
+const sanitizeSavedQueries = (value: unknown): SavedQuery[] => {
+  if (!Array.isArray(value)) return [];
+  const result: SavedQuery[] = [];
+  value.forEach((entry, index) => {
+    if (!entry || typeof entry !== 'object') return;
+    const raw = entry as Record<string, unknown>;
+    const id = toTrimmedString(raw.id, `query-${index + 1}`) || `query-${index + 1}`;
+    const sql = toTrimmedString(raw.sql);
+    const connectionId = toTrimmedString(raw.connectionId);
+    const dbName = toTrimmedString(raw.dbName);
+    if (!sql || !connectionId || !dbName) return;
+    result.push({
+      id,
+      name: toTrimmedString(raw.name, `查询-${index + 1}`) || `查询-${index + 1}`,
+      sql,
+      connectionId,
+      dbName,
+      createdAt: Number.isFinite(Number(raw.createdAt)) ? Number(raw.createdAt) : Date.now(),
+    });
+  });
+  return result;
+};
+
+const sanitizeTheme = (value: unknown): 'light' | 'dark' => (value === 'dark' ? 'dark' : 'light');
+
+const sanitizeSqlFormatOptions = (value: unknown): { keywordCase: 'upper' | 'lower' } => {
+  const raw = (value && typeof value === 'object') ? value as Record<string, unknown> : {};
+  return { keywordCase: raw.keywordCase === 'lower' ? 'lower' : 'upper' };
+};
+
+const sanitizeQueryOptions = (value: unknown): { maxRows: number } => {
+  const raw = (value && typeof value === 'object') ? value as Record<string, unknown> : {};
+  const maxRows = Number(raw.maxRows);
+  if (!Number.isFinite(maxRows) || maxRows <= 0) {
+    return { maxRows: 5000 };
+  }
+  return { maxRows: Math.min(50000, Math.trunc(maxRows)) };
+};
+
+const sanitizeTableAccessCount = (value: unknown): Record<string, number> => {
+  const raw = (value && typeof value === 'object') ? value as Record<string, unknown> : {};
+  const result: Record<string, number> = {};
+  Object.entries(raw).forEach(([key, count]) => {
+    const parsed = Number(count);
+    if (!Number.isFinite(parsed) || parsed < 0) return;
+    result[key] = Math.trunc(parsed);
+  });
+  return result;
+};
+
+const sanitizeTableSortPreference = (value: unknown): Record<string, 'name' | 'frequency'> => {
+  const raw = (value && typeof value === 'object') ? value as Record<string, unknown> : {};
+  const result: Record<string, 'name' | 'frequency'> = {};
+  Object.entries(raw).forEach(([key, preference]) => {
+    result[key] = preference === 'frequency' ? 'frequency' : 'name';
+  });
+  return result;
+};
+
+const sanitizeAppearance = (
+  appearance: Partial<{ opacity: number; blur: number }> | undefined,
+  version: number
+): { opacity: number; blur: number } => {
+  if (!appearance || typeof appearance !== 'object') {
+    return { ...DEFAULT_APPEARANCE };
+  }
+  const nextAppearance = {
+    opacity: typeof appearance.opacity === 'number' ? appearance.opacity : DEFAULT_APPEARANCE.opacity,
+    blur: typeof appearance.blur === 'number' ? appearance.blur : DEFAULT_APPEARANCE.blur,
+  };
+  if (version < 2 && isLegacyDefaultAppearance(appearance)) {
+    return { ...DEFAULT_APPEARANCE };
+  }
+  return nextAppearance;
+};
+
 export const useStore = create<AppState>()(
   persist(
     (set) => ({
@@ -179,33 +475,40 @@ export const useStore = create<AppState>()(
     }),
     {
       name: 'lite-db-storage', // name of the item in the storage (must be unique)
-      version: 2,
+      version: 3,
       migrate: (persistedState: unknown, version: number) => {
         if (!persistedState || typeof persistedState !== 'object') {
           return persistedState as AppState;
         }
         const state = persistedState as Partial<AppState>;
         const nextState: Partial<AppState> = { ...state };
-        const appearance = state.appearance;
-
-        if (!appearance || typeof appearance !== 'object') {
-          nextState.appearance = { ...DEFAULT_APPEARANCE };
-          return nextState as AppState;
-        }
-
-        const nextAppearance = {
-          opacity: typeof appearance.opacity === 'number' ? appearance.opacity : DEFAULT_APPEARANCE.opacity,
-          blur: typeof appearance.blur === 'number' ? appearance.blur : DEFAULT_APPEARANCE.blur,
-        };
-
-        if (version < 2 && isLegacyDefaultAppearance(appearance)) {
-          nextState.appearance = { ...DEFAULT_APPEARANCE };
-        } else {
-          nextState.appearance = nextAppearance;
-        }
-
+        nextState.connections = sanitizeConnections(state.connections);
+        nextState.savedQueries = sanitizeSavedQueries(state.savedQueries);
+        nextState.theme = sanitizeTheme(state.theme);
+        nextState.appearance = sanitizeAppearance(state.appearance, version);
+        nextState.sqlFormatOptions = sanitizeSqlFormatOptions(state.sqlFormatOptions);
+        nextState.queryOptions = sanitizeQueryOptions(state.queryOptions);
+        nextState.tableAccessCount = sanitizeTableAccessCount(state.tableAccessCount);
+        nextState.tableSortPreference = sanitizeTableSortPreference(state.tableSortPreference);
         return nextState as AppState;
       },
+      merge: (persistedState, currentState) => {
+        const state = (persistedState && typeof persistedState === 'object')
+          ? persistedState as Partial<AppState>
+          : {};
+        return {
+          ...currentState,
+          ...state,
+          connections: sanitizeConnections(state.connections),
+          savedQueries: sanitizeSavedQueries(state.savedQueries),
+          theme: sanitizeTheme(state.theme),
+          appearance: sanitizeAppearance(state.appearance, 3),
+          sqlFormatOptions: sanitizeSqlFormatOptions(state.sqlFormatOptions),
+          queryOptions: sanitizeQueryOptions(state.queryOptions),
+          tableAccessCount: sanitizeTableAccessCount(state.tableAccessCount),
+          tableSortPreference: sanitizeTableSortPreference(state.tableSortPreference),
+        };
+      },
       partialize: (state) => ({
         connections: state.connections,
         savedQueries: state.savedQueries,

frontend/src/types.ts

@@ -12,10 +12,35 @@ export interface ConnectionConfig {
   port: number;
   user: string;
   password?: string;
+  savePassword?: boolean;
   database?: string;
   useSSH?: boolean;
   ssh?: SSHConfig;
+  driver?: string;
+  dsn?: string;
+  timeout?: number;
   redisDB?: number; // Redis database index (0-15)
+  uri?: string; // Connection URI for copy/paste
+  hosts?: string[]; // Multi-host addresses: host:port
+  topology?: 'single' | 'replica';
+  mysqlReplicaUser?: string;
+  mysqlReplicaPassword?: string;
+  replicaSet?: string;
+  authSource?: string;
+  readPreference?: string;
+  mongoSrv?: boolean;
+  mongoAuthMechanism?: string;
+  mongoReplicaUser?: string;
+  mongoReplicaPassword?: string;
+}
+
+export interface MongoMemberInfo {
+  host: string;
+  role: string;
+  state: string;
+  stateCode?: number;
+  healthy: boolean;
+  isSelf?: boolean;
 }
 
 export interface SavedConnection {
@@ -62,7 +87,7 @@ export interface TriggerDefinition {
 export interface TabData {
   id: string;
   title: string;
-  type: 'query' | 'table' | 'design' | 'redis-keys' | 'redis-command' | 'trigger';
+  type: 'query' | 'table' | 'design' | 'redis-keys' | 'redis-command' | 'trigger' | 'view-def' | 'routine-def';
   connectionId: string;
   dbName?: string;
   tableName?: string;
@@ -71,6 +96,9 @@ export interface TabData {
   readOnly?: boolean;
   redisDB?: number; // Redis database index for redis tabs
   triggerName?: string; // Trigger name for trigger tabs
+  viewName?: string; // View name for view definition tabs
+  routineName?: string; // Routine name for function/procedure definition tabs
+  routineType?: string; // 'FUNCTION' or 'PROCEDURE'
 }
 
 export interface DatabaseNode {

frontend/src/utils/sql.ts

@@ -1,5 +1,6 @@
 export type FilterCondition = {
   id?: number;
+  enabled?: boolean;
   column?: string;
   op?: string;
   value?: string;
@@ -35,7 +36,7 @@ export const quoteIdentPart = (dbType: string, ident: string) => {
   if (!raw) return raw;
   const dbTypeLower = (dbType || '').toLowerCase();
 
-  if (dbTypeLower === 'mysql' || dbTypeLower === 'tdengine') {
+  if (dbTypeLower === 'mysql' || dbTypeLower === 'mariadb' || dbTypeLower === 'sphinx' || dbTypeLower === 'tdengine') {
     return `\`${raw.replace(/`/g, '``')}\``;
   }
 
@@ -62,6 +63,41 @@ export const quoteQualifiedIdent = (dbType: string, ident: string) => {
 
 export const escapeLiteral = (val: string) => (val || '').replace(/'/g, "''");
 
+type SortInfo = {
+  columnKey?: string;
+  order?: string;
+} | null | undefined;
+
+export const buildOrderBySQL = (
+  dbType: string,
+  sortInfo: SortInfo,
+  fallbackColumns: string[] = [],
+) => {
+  const sortColumn = normalizeIdentPart(String(sortInfo?.columnKey || ''));
+  const sortOrder = String(sortInfo?.order || '');
+  const direction = sortOrder === 'ascend' ? 'ASC' : sortOrder === 'descend' ? 'DESC' : '';
+  if (sortColumn && direction) {
+    return ` ORDER BY ${quoteIdentPart(dbType, sortColumn)} ${direction}`;
+  }
+
+  const seen = new Set<string>();
+  const stableColumns = (fallbackColumns || [])
+    .map((col) => normalizeIdentPart(String(col || '')))
+    .filter((col) => {
+      if (!col) return false;
+      const key = col.toLowerCase();
+      if (seen.has(key)) return false;
+      seen.add(key);
+      return true;
+    });
+  if (stableColumns.length > 0) {
+    const parts = stableColumns.map((col) => `${quoteIdentPart(dbType, col)} ASC`);
+    return ` ORDER BY ${parts.join(', ')}`;
+  }
+
+  return '';
+};
+
 export const parseListValues = (val: string) => {
   const raw = (val || '').trim();
   if (!raw) return [];
@@ -75,6 +111,8 @@ export const buildWhereSQL = (dbType: string, conditions: FilterCondition[]) =>
   const whereParts: string[] = [];
 
   (conditions || []).forEach((cond) => {
+    if (cond?.enabled === false) return;
+
     const op = (cond?.op || '').trim();
     const column = (cond?.column || '').trim();
     const value = (cond?.value ?? '').toString();

frontend/wailsjs/go/app/App.d.ts

@@ -40,8 +40,12 @@ export function DownloadUpdate():Promise<connection.QueryResult>;
 
 export function DropDatabase(arg1:connection.ConnectionConfig,arg2:string):Promise<connection.QueryResult>;
 
+export function DropFunction(arg1:connection.ConnectionConfig,arg2:string,arg3:string,arg4:string):Promise<connection.QueryResult>;
+
 export function DropTable(arg1:connection.ConnectionConfig,arg2:string,arg3:string):Promise<connection.QueryResult>;
 
+export function DropView(arg1:connection.ConnectionConfig,arg2:string,arg3:string):Promise<connection.QueryResult>;
+
 export function ExportData(arg1:Array<Record<string, any>>,arg2:Array<string>,arg3:string,arg4:string):Promise<connection.QueryResult>;
 
 export function ExportDatabaseSQL(arg1:connection.ConnectionConfig,arg2:string,arg3:boolean):Promise<connection.QueryResult>;
@@ -60,8 +64,12 @@ export function ImportConfigFile():Promise<connection.QueryResult>;
 
 export function ImportData(arg1:connection.ConnectionConfig,arg2:string,arg3:string):Promise<connection.QueryResult>;
 
+export function ImportDataWithProgress(arg1:connection.ConnectionConfig,arg2:string,arg3:string,arg4:string):Promise<connection.QueryResult>;
+
 export function InstallUpdateAndRestart():Promise<connection.QueryResult>;
 
+export function MongoDiscoverMembers(arg1:connection.ConnectionConfig):Promise<connection.QueryResult>;
+
 export function MySQLConnect(arg1:connection.ConnectionConfig):Promise<connection.QueryResult>;
 
 export function MySQLGetDatabases(arg1:connection.ConnectionConfig):Promise<connection.QueryResult>;
@@ -74,6 +82,8 @@ export function MySQLShowCreateTable(arg1:connection.ConnectionConfig,arg2:strin
 
 export function OpenSQLFile():Promise<connection.QueryResult>;
 
+export function PreviewImportFile(arg1:string):Promise<connection.QueryResult>;
+
 export function RedisConnect(arg1:connection.ConnectionConfig):Promise<connection.QueryResult>;
 
 export function RedisDeleteHashField(arg1:connection.ConnectionConfig,arg2:string,arg3:Array<string>):Promise<connection.QueryResult>;
@@ -120,4 +130,8 @@ export function RenameDatabase(arg1:connection.ConnectionConfig,arg2:string,arg3
 
 export function RenameTable(arg1:connection.ConnectionConfig,arg2:string,arg3:string,arg4:string):Promise<connection.QueryResult>;
 
+export function RenameView(arg1:connection.ConnectionConfig,arg2:string,arg3:string,arg4:string):Promise<connection.QueryResult>;
+
+export function SetWindowTranslucency(arg1:number,arg2:number):Promise<void>;
+
 export function TestConnection(arg1:connection.ConnectionConfig):Promise<connection.QueryResult>;

frontend/wailsjs/go/app/App.js

@@ -74,10 +74,18 @@ export function DropDatabase(arg1, arg2) {
   return window['go']['app']['App']['DropDatabase'](arg1, arg2);
 }
 
+export function DropFunction(arg1, arg2, arg3, arg4) {
+  return window['go']['app']['App']['DropFunction'](arg1, arg2, arg3, arg4);
+}
+
 export function DropTable(arg1, arg2, arg3) {
   return window['go']['app']['App']['DropTable'](arg1, arg2, arg3);
 }
 
+export function DropView(arg1, arg2, arg3) {
+  return window['go']['app']['App']['DropView'](arg1, arg2, arg3);
+}
+
 export function ExportData(arg1, arg2, arg3, arg4) {
   return window['go']['app']['App']['ExportData'](arg1, arg2, arg3, arg4);
 }
@@ -114,10 +122,18 @@ export function ImportData(arg1, arg2, arg3) {
   return window['go']['app']['App']['ImportData'](arg1, arg2, arg3);
 }
 
+export function ImportDataWithProgress(arg1, arg2, arg3, arg4) {
+  return window['go']['app']['App']['ImportDataWithProgress'](arg1, arg2, arg3, arg4);
+}
+
 export function InstallUpdateAndRestart() {
   return window['go']['app']['App']['InstallUpdateAndRestart']();
 }
 
+export function MongoDiscoverMembers(arg1) {
+  return window['go']['app']['App']['MongoDiscoverMembers'](arg1);
+}
+
 export function MySQLConnect(arg1) {
   return window['go']['app']['App']['MySQLConnect'](arg1);
 }
@@ -142,6 +158,10 @@ export function OpenSQLFile() {
   return window['go']['app']['App']['OpenSQLFile']();
 }
 
+export function PreviewImportFile(arg1) {
+  return window['go']['app']['App']['PreviewImportFile'](arg1);
+}
+
 export function RedisConnect(arg1) {
   return window['go']['app']['App']['RedisConnect'](arg1);
 }
@@ -234,6 +254,14 @@ export function RenameTable(arg1, arg2, arg3, arg4) {
   return window['go']['app']['App']['RenameTable'](arg1, arg2, arg3, arg4);
 }
 
+export function RenameView(arg1, arg2, arg3, arg4) {
+  return window['go']['app']['App']['RenameView'](arg1, arg2, arg3, arg4);
+}
+
+export function SetWindowTranslucency(arg1, arg2) {
+  return window['go']['app']['App']['SetWindowTranslucency'](arg1, arg2);
+}
+
 export function TestConnection(arg1) {
   return window['go']['app']['App']['TestConnection'](arg1);
 }

frontend/wailsjs/go/models.ts

@@ -74,6 +74,7 @@ export namespace connection {
 	    port: number;
 	    user: string;
 	    password: string;
+	    savePassword?: boolean;
 	    database: string;
 	    useSSH: boolean;
 	    ssh: SSHConfig;
@@ -81,6 +82,18 @@ export namespace connection {
 	    dsn?: string;
 	    timeout?: number;
 	    redisDB?: number;
+	    uri?: string;
+	    hosts?: string[];
+	    topology?: string;
+	    mysqlReplicaUser?: string;
+	    mysqlReplicaPassword?: string;
+	    replicaSet?: string;
+	    authSource?: string;
+	    readPreference?: string;
+	    mongoSrv?: boolean;
+	    mongoAuthMechanism?: string;
+	    mongoReplicaUser?: string;
+	    mongoReplicaPassword?: string;
 	
 	    static createFrom(source: any = {}) {
 	        return new ConnectionConfig(source);
@@ -93,6 +106,7 @@ export namespace connection {
 	        this.port = source["port"];
 	        this.user = source["user"];
 	        this.password = source["password"];
+	        this.savePassword = source["savePassword"];
 	        this.database = source["database"];
 	        this.useSSH = source["useSSH"];
 	        this.ssh = this.convertValues(source["ssh"], SSHConfig);
@@ -100,6 +114,18 @@ export namespace connection {
 	        this.dsn = source["dsn"];
 	        this.timeout = source["timeout"];
 	        this.redisDB = source["redisDB"];
+	        this.uri = source["uri"];
+	        this.hosts = source["hosts"];
+	        this.topology = source["topology"];
+	        this.mysqlReplicaUser = source["mysqlReplicaUser"];
+	        this.mysqlReplicaPassword = source["mysqlReplicaPassword"];
+	        this.replicaSet = source["replicaSet"];
+	        this.authSource = source["authSource"];
+	        this.readPreference = source["readPreference"];
+	        this.mongoSrv = source["mongoSrv"];
+	        this.mongoAuthMechanism = source["mongoAuthMechanism"];
+	        this.mongoReplicaUser = source["mongoReplicaUser"];
+	        this.mongoReplicaPassword = source["mongoReplicaPassword"];
 	    }
 	
 		convertValues(a: any, classs: any, asMap: boolean = false): any {

go.mod

@@ -6,14 +6,17 @@ require (
 	gitea.com/kingbase/gokb v0.0.0-20201021123113-29bd62a876c3
 	gitee.com/chunanyong/dm v1.8.22
 	github.com/go-sql-driver/mysql v1.9.3
+	github.com/highgo/pq-sm3 v0.0.0
 	github.com/lib/pq v1.11.1
 	github.com/microsoft/go-mssqldb v1.9.6
 	github.com/redis/go-redis/v9 v9.17.3
 	github.com/sijms/go-ora/v2 v2.9.0
 	github.com/taosdata/driver-go/v3 v3.7.8
 	github.com/wailsapp/wails/v2 v2.11.0
+	github.com/xuri/excelize/v2 v2.10.0
 	go.mongodb.org/mongo-driver/v2 v2.5.0
 	golang.org/x/crypto v0.47.0
+	golang.org/x/text v0.33.0
 	modernc.org/sqlite v1.44.3
 )
 
@@ -48,9 +51,12 @@ require (
 	github.com/pkg/browser v0.0.0-20240102092130-5ac0b6a4141c // indirect
 	github.com/pkg/errors v0.9.1 // indirect
 	github.com/remyoudompheng/bigfft v0.0.0-20230129092748-24d4a6f8daec // indirect
+	github.com/richardlehane/mscfb v1.0.4 // indirect
+	github.com/richardlehane/msoleps v1.0.4 // indirect
 	github.com/rivo/uniseg v0.4.7 // indirect
 	github.com/samber/lo v1.49.1 // indirect
 	github.com/shopspring/decimal v1.4.0 // indirect
+	github.com/tiendc/go-deepcopy v1.7.1 // indirect
 	github.com/tkrajina/go-reflector v0.5.8 // indirect
 	github.com/valyala/bytebufferpool v1.0.0 // indirect
 	github.com/valyala/fasttemplate v1.2.2 // indirect
@@ -59,13 +65,16 @@ require (
 	github.com/xdg-go/pbkdf2 v1.0.0 // indirect
 	github.com/xdg-go/scram v1.2.0 // indirect
 	github.com/xdg-go/stringprep v1.0.4 // indirect
+	github.com/xuri/efp v0.0.1 // indirect
+	github.com/xuri/nfp v0.0.2-0.20250530014748-2ddeb826f9a9 // indirect
 	github.com/youmark/pkcs8 v0.0.0-20240726163527-a2c0da244d78 // indirect
 	golang.org/x/exp v0.0.0-20251023183803-a4bb9ffd2546 // indirect
 	golang.org/x/net v0.48.0 // indirect
 	golang.org/x/sync v0.19.0 // indirect
 	golang.org/x/sys v0.40.0 // indirect
-	golang.org/x/text v0.33.0 // indirect
 	modernc.org/libc v1.67.6 // indirect
 	modernc.org/mathutil v1.7.1 // indirect
 	modernc.org/memory v1.11.0 // indirect
 )
+
+replace github.com/highgo/pq-sm3 => ./third_party/highgo-pq

go.sum

@@ -110,6 +110,11 @@ github.com/redis/go-redis/v9 v9.17.3 h1:fN29NdNrE17KttK5Ndf20buqfDZwGNgoUr9qjl1D
 github.com/redis/go-redis/v9 v9.17.3/go.mod h1:u410H11HMLoB+TP67dz8rL9s6QW2j76l0//kSOd3370=
 github.com/remyoudompheng/bigfft v0.0.0-20230129092748-24d4a6f8daec h1:W09IVJc94icq4NjY3clb7Lk8O1qJ8BdBEF8z0ibU0rE=
 github.com/remyoudompheng/bigfft v0.0.0-20230129092748-24d4a6f8daec/go.mod h1:qqbHyh8v60DhA7CoWK5oRCqLrMHRGoxYCSS9EjAz6Eo=
+github.com/richardlehane/mscfb v1.0.4 h1:WULscsljNPConisD5hR0+OyZjwK46Pfyr6mPu5ZawpM=
+github.com/richardlehane/mscfb v1.0.4/go.mod h1:YzVpcZg9czvAuhk9T+a3avCpcFPMUWm7gK3DypaEsUk=
+github.com/richardlehane/msoleps v1.0.1/go.mod h1:BWev5JBpU9Ko2WAgmZEuiz4/u3ZYTKbjLycmwiWUfWg=
+github.com/richardlehane/msoleps v1.0.4 h1:WuESlvhX3gH2IHcd8UqyCuFY5yiq/GR/yqaSM/9/g00=
+github.com/richardlehane/msoleps v1.0.4/go.mod h1:BWev5JBpU9Ko2WAgmZEuiz4/u3ZYTKbjLycmwiWUfWg=
 github.com/rivo/uniseg v0.2.0/go.mod h1:J6wj4VEh+S6ZtnVlnTBMWIodfgj8LQOQFoIToxlJtxc=
 github.com/rivo/uniseg v0.4.7 h1:WUdvkW8uEhrYfLC4ZzdpI2ztxP1I582+49Oc5Mq64VQ=
 github.com/rivo/uniseg v0.4.7/go.mod h1:FN3SvrM+Zdj16jyLfmOkMNblXMcoc8DfTHruCPUcx88=
@@ -127,10 +132,12 @@ github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UV
 github.com/stretchr/testify v1.7.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
 github.com/stretchr/testify v1.8.0/go.mod h1:yNjHg4UonilssWZ8iaSj1OCr/vHnekPRkoO+kdMU+MU=
 github.com/stretchr/testify v1.8.2/go.mod h1:w2LPCIKwWwSfY2zedu0+kehJoqGctiVI29o6fzry7u4=
-github.com/stretchr/testify v1.10.0 h1:Xv5erBjTwe/5IxqUQTdXv5kgmIvbHo3QQyRwhJsOfJA=
-github.com/stretchr/testify v1.10.0/go.mod h1:r2ic/lqez/lEtzL7wO/rwa5dbSLXVDPFyf8C91i36aY=
+github.com/stretchr/testify v1.11.1 h1:7s2iGBzp5EwR7/aIZr8ao5+dra3wiQyKjjFuvgVKu7U=
+github.com/stretchr/testify v1.11.1/go.mod h1:wZwfW3scLgRK+23gO65QZefKpKQRnfz6sD981Nm4B6U=
 github.com/taosdata/driver-go/v3 v3.7.8 h1:N2H6HLLZH2ve2ipcoFgG9BJS+yW0XksqNYwEdSmHaJk=
 github.com/taosdata/driver-go/v3 v3.7.8/go.mod h1:gSxBEPOueMg0rTmMO1Ug6aeD7AwGdDGvUtLrsDTTpYc=
+github.com/tiendc/go-deepcopy v1.7.1 h1:LnubftI6nYaaMOcaz0LphzwraqN8jiWTwm416sitff4=
+github.com/tiendc/go-deepcopy v1.7.1/go.mod h1:4bKjNC2r7boYOkD2IOuZpYjmlDdzjbpTRyCx+goBCJQ=
 github.com/tkrajina/go-reflector v0.5.8 h1:yPADHrwmUbMq4RGEyaOUpz2H90sRsETNVpjzo3DLVQQ=
 github.com/tkrajina/go-reflector v0.5.8/go.mod h1:ECbqLgccecY5kPmPmXg1MrHW585yMcDkVl6IvJe64T4=
 github.com/valyala/bytebufferpool v1.0.0 h1:GqA5TC/0021Y/b9FG4Oi9Mr3q7XYx6KllzawFIhcdPw=
@@ -149,6 +156,12 @@ github.com/xdg-go/scram v1.2.0 h1:bYKF2AEwG5rqd1BumT4gAnvwU/M9nBp2pTSxeZw7Wvs=
 github.com/xdg-go/scram v1.2.0/go.mod h1:3dlrS0iBaWKYVt2ZfA4cj48umJZ+cAEbR6/SjLA88I8=
 github.com/xdg-go/stringprep v1.0.4 h1:XLI/Ng3O1Atzq0oBs3TWm+5ZVgkq2aqdlvP9JtoZ6c8=
 github.com/xdg-go/stringprep v1.0.4/go.mod h1:mPGuuIYwz7CmR2bT9j4GbQqutWS1zV24gijq1dTyGkM=
+github.com/xuri/efp v0.0.1 h1:fws5Rv3myXyYni8uwj2qKjVaRP30PdjeYe2Y6FDsCL8=
+github.com/xuri/efp v0.0.1/go.mod h1:ybY/Jr0T0GTCnYjKqmdwxyxn2BQf2RcQIIvex5QldPI=
+github.com/xuri/excelize/v2 v2.10.0 h1:8aKsP7JD39iKLc6dH5Tw3dgV3sPRh8uRVXu/fMstfW4=
+github.com/xuri/excelize/v2 v2.10.0/go.mod h1:SC5TzhQkaOsTWpANfm+7bJCldzcnU/jrhqkTi/iBHBU=
+github.com/xuri/nfp v0.0.2-0.20250530014748-2ddeb826f9a9 h1:+C0TIdyyYmzadGaL/HBLbf3WdLgC29pgyhTjAT/0nuE=
+github.com/xuri/nfp v0.0.2-0.20250530014748-2ddeb826f9a9/go.mod h1:WwHg+CVyzlv/TX9xqBFXEZAuxOPxn2k1GNHwG41IIUQ=
 github.com/youmark/pkcs8 v0.0.0-20240726163527-a2c0da244d78 h1:ilQV1hzziu+LLM3zUTJ0trRztfwgjqKnBWNtSRkbmwM=
 github.com/youmark/pkcs8 v0.0.0-20240726163527-a2c0da244d78/go.mod h1:aL8wCCfTfSfmXjznFBSZNN13rSJjlIOI1fUNAtF7rmI=
 github.com/yuin/goldmark v1.4.13/go.mod h1:6yULJ656Px+3vBD8DxQVa3kxgyrAnzto9xy5taEt/CY=
@@ -160,6 +173,8 @@ golang.org/x/crypto v0.47.0 h1:V6e3FRj+n4dbpw86FJ8Fv7XVOql7TEwpHapKoMJ/GO8=
 golang.org/x/crypto v0.47.0/go.mod h1:ff3Y9VzzKbwSSEzWqJsJVBnWmRwRSHt/6Op5n9bQc4A=
 golang.org/x/exp v0.0.0-20251023183803-a4bb9ffd2546 h1:mgKeJMpvi0yx/sU5GsxQ7p6s2wtOnGAHZWCHUM4KGzY=
 golang.org/x/exp v0.0.0-20251023183803-a4bb9ffd2546/go.mod h1:j/pmGrbnkbPtQfxEe5D0VQhZC6qKbfKifgD0oM7sR70=
+golang.org/x/image v0.25.0 h1:Y6uW6rH1y5y/LK1J8BPWZtr6yZ7hrsy6hFrXjgsc2fQ=
+golang.org/x/image v0.25.0/go.mod h1:tCAmOEGthTtkalusGp1g3xa2gke8J6c2N565dTyl9Rs=
 golang.org/x/mod v0.6.0-dev.0.20220419223038-86c51ed26bb4/go.mod h1:jJ57K6gSWd91VN4djpZkiMVwK6gcyfeH4XE8wZrZaV4=
 golang.org/x/mod v0.31.0 h1:HaW9xtz0+kOcWKwli0ZXy79Ix+UW/vOfmWI5QVd2tgI=
 golang.org/x/mod v0.31.0/go.mod h1:43JraMp9cGx1Rx3AqioxrbrhNsLl2l/iNAvuBkrezpg=

internal/app/app.go

@@ -49,6 +49,13 @@ func (a *App) Startup(ctx context.Context) {
 	logger.Infof("应用启动完成")
 }
 
+// SetWindowTranslucency 动态调整 macOS 窗口透明度。
+// 前端在加载用户外观设置后、以及用户修改外观时调用此方法。
+// opacity=1.0 且 blur=0 时窗口标记为 opaque，GPU 不再持续计算窗口背后的模糊合成。
+func (a *App) SetWindowTranslucency(opacity float64, blur float64) {
+	setMacWindowTranslucency(opacity, blur)
+}
+
 // Shutdown is called when the app terminates
 func (a *App) Shutdown(ctx context.Context) {
 	logger.Infof("应用开始关闭，准备释放资源")
@@ -103,10 +110,11 @@ type withLogHint struct {
 }
 
 func (e withLogHint) Error() string {
+	message := normalizeErrorMessage(e.err)
 	if strings.TrimSpace(e.logPath) == "" {
-		return e.err.Error()
+		return message
 	}
-	return fmt.Sprintf("%s（详细日志：%s）", e.err.Error(), e.logPath)
+	return fmt.Sprintf("%s（详细日志：%s）", message, e.logPath)
 }
 
 func (e withLogHint) Unwrap() error {
@@ -128,6 +136,33 @@ func formatConnSummary(config connection.ConnectionConfig) string {
 	b.WriteString(fmt.Sprintf("类型=%s 地址=%s:%d 数据库=%s 用户=%s 超时=%ds",
 		config.Type, config.Host, config.Port, dbName, config.User, timeoutSeconds))
 
+	if len(config.Hosts) > 0 {
+		b.WriteString(fmt.Sprintf(" 节点数=%d", len(config.Hosts)))
+	}
+	if strings.TrimSpace(config.Topology) != "" {
+		b.WriteString(fmt.Sprintf(" 拓扑=%s", strings.TrimSpace(config.Topology)))
+	}
+	if strings.TrimSpace(config.URI) != "" {
+		b.WriteString(fmt.Sprintf(" URI=已配置(长度=%d)", len(config.URI)))
+	}
+	if strings.TrimSpace(config.MySQLReplicaUser) != "" {
+		b.WriteString(" MySQL从库凭据=已配置")
+	}
+	if strings.EqualFold(strings.TrimSpace(config.Type), "mongodb") {
+		if strings.TrimSpace(config.MongoReplicaUser) != "" {
+			b.WriteString(" Mongo从库凭据=已配置")
+		}
+		if strings.TrimSpace(config.ReplicaSet) != "" {
+			b.WriteString(fmt.Sprintf(" 副本集=%s", strings.TrimSpace(config.ReplicaSet)))
+		}
+		if strings.TrimSpace(config.ReadPreference) != "" {
+			b.WriteString(fmt.Sprintf(" 读偏好=%s", strings.TrimSpace(config.ReadPreference)))
+		}
+		if strings.TrimSpace(config.AuthSource) != "" {
+			b.WriteString(fmt.Sprintf(" 认证库=%s", strings.TrimSpace(config.AuthSource)))
+		}
+	}
+
 	if config.UseSSH {
 		b.WriteString(fmt.Sprintf(" SSH=%s:%d 用户=%s", config.SSH.Host, config.SSH.Port, config.SSH.User))
 	}

internal/app/db_context.go

@@ -14,7 +14,7 @@ func normalizeRunConfig(config connection.ConnectionConfig, dbName string) conne
 	}
 
 	switch strings.ToLower(strings.TrimSpace(config.Type)) {
-	case "mysql", "mariadb", "postgres", "kingbase", "highgo", "vastbase", "sqlserver", "mongodb", "tdengine":
+	case "mysql", "mariadb", "sphinx", "postgres", "kingbase", "highgo", "vastbase", "sqlserver", "mongodb", "tdengine":
 		// 这些类型的 dbName 表示"数据库"，需要写入连接配置以选择目标库。
 		runConfig.Database = name
 	case "dameng":

internal/app/error_text.go

@@ -0,0 +1,100 @@
+package app
+
+import (
+	"strings"
+	"unicode"
+	"unicode/utf8"
+
+	"golang.org/x/text/encoding/simplifiedchinese"
+	"golang.org/x/text/transform"
+)
+
+func normalizeErrorMessage(err error) string {
+	if err == nil {
+		return ""
+	}
+	return normalizeMixedEncodingText(err.Error())
+}
+
+func normalizeMixedEncodingText(text string) string {
+	if text == "" {
+		return text
+	}
+
+	raw := []byte(text)
+	output := make([]byte, 0, len(raw)+16)
+	suspect := make([]byte, 0, 16)
+
+	flushSuspect := func() {
+		if len(suspect) == 0 {
+			return
+		}
+
+		fallback := strings.ToValidUTF8(string(suspect), "<22>")
+		decoded, _, err := transform.Bytes(simplifiedchinese.GB18030.NewDecoder(), suspect)
+		if err == nil && utf8.Valid(decoded) {
+			candidate := string(decoded)
+			if scoreDecodedText(candidate) > scoreDecodedText(fallback) {
+				output = append(output, []byte(candidate)...)
+			} else {
+				output = append(output, []byte(fallback)...)
+			}
+		} else {
+			output = append(output, []byte(fallback)...)
+		}
+
+		suspect = suspect[:0]
+	}
+
+	for len(raw) > 0 {
+		r, size := utf8.DecodeRune(raw)
+		if r == utf8.RuneError && size == 1 {
+			suspect = append(suspect, raw[0])
+			raw = raw[1:]
+			continue
+		}
+
+		if isLikelyMojibakeRune(r) {
+			suspect = append(suspect, raw[:size]...)
+		} else {
+			flushSuspect()
+			output = append(output, raw[:size]...)
+		}
+		raw = raw[size:]
+	}
+
+	flushSuspect()
+	return string(output)
+}
+
+func isLikelyMojibakeRune(r rune) bool {
+	if r == utf8.RuneError {
+		return true
+	}
+	if r >= 0x00C0 && r <= 0x02FF {
+		return true
+	}
+	if unicode.In(r, unicode.Hebrew, unicode.Arabic, unicode.Cyrillic, unicode.Greek) {
+		return true
+	}
+	return false
+}
+
+func scoreDecodedText(text string) int {
+	score := 0
+	for _, r := range text {
+		switch {
+		case r == '<27>':
+			score -= 6
+		case unicode.Is(unicode.Han, r):
+			score += 4
+		case isLikelyMojibakeRune(r):
+			score -= 3
+		case unicode.IsPrint(r):
+			score += 1
+		default:
+			score -= 2
+		}
+	}
+	return score
+}

internal/app/error_text_test.go

@@ -0,0 +1,25 @@
+package app
+
+import "testing"
+
+func TestNormalizeMixedEncodingText_GBKErrorMessage(t *testing.T) {
+	raw := []byte("pq: ")
+	raw = append(raw, 0xD3, 0xC3, 0xBB, 0xA7) // 用户
+	raw = append(raw, []byte(` "root" Password `)...)
+	raw = append(raw, 0xC8, 0xCF, 0xD6, 0xA4, 0xCA, 0xA7, 0xB0, 0xDC) // 认证失败
+	raw = append(raw, []byte(" (28P01)")...)
+
+	got := normalizeMixedEncodingText(string(raw))
+	want := `pq: 用户 "root" Password 认证失败 (28P01)`
+	if got != want {
+		t.Fatalf("normalizeMixedEncodingText() mismatch\nwant: %q\ngot:  %q", want, got)
+	}
+}
+
+func TestNormalizeMixedEncodingText_KeepUTF8(t *testing.T) {
+	input := `连接建立后验证失败：pq: password authentication failed for user "root"`
+	got := normalizeMixedEncodingText(input)
+	if got != input {
+		t.Fatalf("expected unchanged utf8 text, got: %q", got)
+	}
+}

internal/app/methods_db.go

@@ -36,6 +36,41 @@ func (a *App) TestConnection(config connection.ConnectionConfig) connection.Quer
 	return connection.QueryResult{Success: true, Message: "连接成功"}
 }
 
+func (a *App) MongoDiscoverMembers(config connection.ConnectionConfig) connection.QueryResult {
+	config.Type = "mongodb"
+
+	dbInst, err := a.getDatabaseForcePing(config)
+	if err != nil {
+		logger.Error(err, "MongoDiscoverMembers 获取连接失败：%s", formatConnSummary(config))
+		return connection.QueryResult{Success: false, Message: err.Error()}
+	}
+
+	discoverable, ok := dbInst.(interface {
+		DiscoverMembers() (string, []connection.MongoMemberInfo, error)
+	})
+	if !ok {
+		return connection.QueryResult{Success: false, Message: "当前 MongoDB 驱动不支持成员发现"}
+	}
+
+	replicaSet, members, err := discoverable.DiscoverMembers()
+	if err != nil {
+		logger.Error(err, "MongoDiscoverMembers 执行失败：%s", formatConnSummary(config))
+		return connection.QueryResult{Success: false, Message: err.Error()}
+	}
+
+	data := map[string]interface{}{
+		"replicaSet": replicaSet,
+		"members":    members,
+	}
+
+	logger.Infof("MongoDiscoverMembers 成功：%s 成员数=%d 副本集=%s", formatConnSummary(config), len(members), replicaSet)
+	return connection.QueryResult{
+		Success: true,
+		Message: fmt.Sprintf("发现 %d 个成员", len(members)),
+		Data:    data,
+	}
+}
+
 func (a *App) CreateDatabase(config connection.ConnectionConfig, dbName string) connection.QueryResult {
 	runConfig := config
 	runConfig.Database = ""
@@ -55,6 +90,8 @@ func (a *App) CreateDatabase(config connection.ConnectionConfig, dbName string)
 		query = fmt.Sprintf("CREATE DATABASE IF NOT EXISTS %s", quoteIdentByType(dbType, dbName))
 	} else if dbType == "mariadb" {
 		// MariaDB uses same syntax as MySQL
+	} else if dbType == "sphinx" {
+		return connection.QueryResult{Success: false, Message: "Sphinx 暂不支持创建数据库"}
 	}
 
 	_, err = dbInst.Exec(query)
@@ -79,6 +116,8 @@ func resolveDDLDBType(config connection.ConnectionConfig) string {
 		return "dameng"
 	case "sqlite3":
 		return "sqlite"
+	case "sphinxql":
+		return "sphinx"
 	default:
 		return driver
 	}
@@ -121,7 +160,7 @@ func buildRunConfigForDDL(config connection.ConnectionConfig, dbType string, dbN
 	if strings.EqualFold(strings.TrimSpace(config.Type), "custom") {
 		// custom 连接的 dbName 语义依赖 driver，尽量在常见驱动上对齐内置类型行为。
 		switch dbType {
-		case "mysql", "mariadb", "postgres", "kingbase", "vastbase", "dameng":
+		case "mysql", "mariadb", "sphinx", "postgres", "kingbase", "vastbase", "dameng":
 			if strings.TrimSpace(dbName) != "" {
 				runConfig.Database = strings.TrimSpace(dbName)
 			}
@@ -142,8 +181,8 @@ func (a *App) RenameDatabase(config connection.ConnectionConfig, oldName string,
 
 	dbType := resolveDDLDBType(config)
 	switch dbType {
-	case "mysql", "mariadb":
-		return connection.QueryResult{Success: false, Message: "MySQL/MariaDB 不支持直接重命名数据库，请新建库后迁移数据"}
+	case "mysql", "mariadb", "sphinx":
+		return connection.QueryResult{Success: false, Message: "MySQL/MariaDB/Sphinx 不支持直接重命名数据库，请新建库后迁移数据"}
 	case "postgres", "kingbase", "highgo", "vastbase":
 		if strings.EqualFold(strings.TrimSpace(config.Database), oldName) {
 			return connection.QueryResult{Success: false, Message: "当前连接正在使用目标数据库，请先连接到其他数据库后再重命名"}
@@ -220,7 +259,7 @@ func (a *App) RenameTable(config connection.ConnectionConfig, dbName string, old
 
 	dbType := resolveDDLDBType(config)
 	switch dbType {
-	case "mysql", "mariadb", "postgres", "kingbase", "sqlite", "oracle", "dameng", "highgo", "vastbase", "sqlserver":
+	case "mysql", "mariadb", "sphinx", "postgres", "kingbase", "sqlite", "oracle", "dameng", "highgo", "vastbase", "sqlserver":
 	default:
 		return connection.QueryResult{Success: false, Message: fmt.Sprintf("当前数据源(%s)暂不支持重命名表", dbType)}
 	}
@@ -234,7 +273,7 @@ func (a *App) RenameTable(config connection.ConnectionConfig, dbName string, old
 
 	var sql string
 	switch dbType {
-	case "mysql", "mariadb":
+	case "mysql", "mariadb", "sphinx":
 		newQualifiedTable := quoteTableIdentByType(dbType, schemaName, newTableName)
 		sql = fmt.Sprintf("RENAME TABLE %s TO %s", oldQualifiedTable, newQualifiedTable)
 	case "sqlserver":
@@ -266,7 +305,7 @@ func (a *App) DropTable(config connection.ConnectionConfig, dbName string, table
 
 	dbType := resolveDDLDBType(config)
 	switch dbType {
-	case "mysql", "mariadb", "postgres", "kingbase", "sqlite", "oracle", "dameng", "highgo", "vastbase", "sqlserver", "tdengine":
+	case "mysql", "mariadb", "sphinx", "postgres", "kingbase", "sqlite", "oracle", "dameng", "highgo", "vastbase", "sqlserver", "tdengine":
 	default:
 		return connection.QueryResult{Success: false, Message: fmt.Sprintf("当前数据源(%s)暂不支持删除表", dbType)}
 	}
@@ -332,7 +371,12 @@ func (a *App) DBQuery(config connection.ConnectionConfig, dbName string, query s
 	defer cancel()
 
 	lowerQuery := strings.TrimSpace(strings.ToLower(query))
-	if strings.HasPrefix(lowerQuery, "select") || strings.HasPrefix(lowerQuery, "show") || strings.HasPrefix(lowerQuery, "describe") || strings.HasPrefix(lowerQuery, "explain") {
+	isReadQuery := strings.HasPrefix(lowerQuery, "select") || strings.HasPrefix(lowerQuery, "show") || strings.HasPrefix(lowerQuery, "describe") || strings.HasPrefix(lowerQuery, "explain")
+	// MongoDB JSON 命令中的 find/count/aggregate 也属于读查询
+	if !isReadQuery && strings.ToLower(strings.TrimSpace(runConfig.Type)) == "mongodb" && strings.HasPrefix(strings.TrimSpace(query), "{") {
+		isReadQuery = true
+	}
+	if isReadQuery {
 		var data []map[string]interface{}
 		var columns []string
 		if q, ok := dbInst.(interface {
@@ -504,6 +548,125 @@ func (a *App) DBGetTriggers(config connection.ConnectionConfig, dbName string, t
 	return connection.QueryResult{Success: true, Data: triggers}
 }
 
+func (a *App) DropView(config connection.ConnectionConfig, dbName string, viewName string) connection.QueryResult {
+	viewName = strings.TrimSpace(viewName)
+	if viewName == "" {
+		return connection.QueryResult{Success: false, Message: "视图名称不能为空"}
+	}
+
+	dbType := resolveDDLDBType(config)
+	switch dbType {
+	case "mysql", "mariadb", "sphinx", "postgres", "kingbase", "sqlite", "oracle", "dameng", "highgo", "vastbase", "sqlserver":
+	default:
+		return connection.QueryResult{Success: false, Message: fmt.Sprintf("当前数据源(%s)暂不支持删除视图", dbType)}
+	}
+
+	schemaName, pureViewName := normalizeSchemaAndTableByType(dbType, dbName, viewName)
+	if pureViewName == "" {
+		return connection.QueryResult{Success: false, Message: "视图名称不能为空"}
+	}
+	qualifiedView := quoteTableIdentByType(dbType, schemaName, pureViewName)
+	sql := fmt.Sprintf("DROP VIEW %s", qualifiedView)
+
+	runConfig := buildRunConfigForDDL(config, dbType, dbName)
+	dbInst, err := a.getDatabase(runConfig)
+	if err != nil {
+		return connection.QueryResult{Success: false, Message: err.Error()}
+	}
+	if _, err := dbInst.Exec(sql); err != nil {
+		return connection.QueryResult{Success: false, Message: err.Error()}
+	}
+	return connection.QueryResult{Success: true, Message: "视图删除成功"}
+}
+
+func (a *App) DropFunction(config connection.ConnectionConfig, dbName string, routineName string, routineType string) connection.QueryResult {
+	routineName = strings.TrimSpace(routineName)
+	routineType = strings.TrimSpace(strings.ToUpper(routineType))
+	if routineName == "" {
+		return connection.QueryResult{Success: false, Message: "函数/存储过程名称不能为空"}
+	}
+	if routineType != "FUNCTION" && routineType != "PROCEDURE" {
+		routineType = "FUNCTION"
+	}
+
+	dbType := resolveDDLDBType(config)
+	switch dbType {
+	case "mysql", "mariadb", "sphinx", "postgres", "kingbase", "oracle", "dameng", "highgo", "vastbase", "sqlserver":
+	default:
+		return connection.QueryResult{Success: false, Message: fmt.Sprintf("当前数据源(%s)暂不支持删除函数/存储过程", dbType)}
+	}
+
+	schemaName, pureName := normalizeSchemaAndTableByType(dbType, dbName, routineName)
+	if pureName == "" {
+		return connection.QueryResult{Success: false, Message: "函数/存储过程名称不能为空"}
+	}
+	qualifiedName := quoteTableIdentByType(dbType, schemaName, pureName)
+	sql := fmt.Sprintf("DROP %s %s", routineType, qualifiedName)
+
+	runConfig := buildRunConfigForDDL(config, dbType, dbName)
+	dbInst, err := a.getDatabase(runConfig)
+	if err != nil {
+		return connection.QueryResult{Success: false, Message: err.Error()}
+	}
+	if _, err := dbInst.Exec(sql); err != nil {
+		return connection.QueryResult{Success: false, Message: err.Error()}
+	}
+
+	label := "函数"
+	if routineType == "PROCEDURE" {
+		label = "存储过程"
+	}
+	return connection.QueryResult{Success: true, Message: fmt.Sprintf("%s删除成功", label)}
+}
+
+func (a *App) RenameView(config connection.ConnectionConfig, dbName string, oldName string, newName string) connection.QueryResult {
+	oldName = strings.TrimSpace(oldName)
+	newName = strings.TrimSpace(newName)
+	if oldName == "" || newName == "" {
+		return connection.QueryResult{Success: false, Message: "视图名称不能为空"}
+	}
+	if strings.EqualFold(oldName, newName) {
+		return connection.QueryResult{Success: false, Message: "新旧视图名称不能相同"}
+	}
+	if strings.Contains(newName, ".") {
+		return connection.QueryResult{Success: false, Message: "新视图名不能包含 schema 或数据库前缀"}
+	}
+
+	dbType := resolveDDLDBType(config)
+	schemaName, pureOldName := normalizeSchemaAndTableByType(dbType, dbName, oldName)
+	if pureOldName == "" {
+		return connection.QueryResult{Success: false, Message: "旧视图名不能为空"}
+	}
+	oldQualified := quoteTableIdentByType(dbType, schemaName, pureOldName)
+	newQuoted := quoteIdentByType(dbType, newName)
+
+	var sql string
+	switch dbType {
+	case "mysql", "mariadb", "sphinx":
+		newQualified := quoteTableIdentByType(dbType, schemaName, newName)
+		sql = fmt.Sprintf("RENAME TABLE %s TO %s", oldQualified, newQualified)
+	case "postgres", "kingbase", "highgo", "vastbase":
+		sql = fmt.Sprintf("ALTER VIEW %s RENAME TO %s", oldQualified, newQuoted)
+	case "sqlserver":
+		oldFullName := schemaName + "." + pureOldName
+		escapedOld := strings.ReplaceAll(oldFullName, "'", "''")
+		escapedNew := strings.ReplaceAll(newName, "'", "''")
+		sql = fmt.Sprintf("EXEC sp_rename '%s', '%s'", escapedOld, escapedNew)
+	default:
+		return connection.QueryResult{Success: false, Message: fmt.Sprintf("当前数据源(%s)暂不支持重命名视图", dbType)}
+	}
+
+	runConfig := buildRunConfigForDDL(config, dbType, dbName)
+	dbInst, err := a.getDatabase(runConfig)
+	if err != nil {
+		return connection.QueryResult{Success: false, Message: err.Error()}
+	}
+	if _, err := dbInst.Exec(sql); err != nil {
+		return connection.QueryResult{Success: false, Message: err.Error()}
+	}
+	return connection.QueryResult{Success: true, Message: "视图重命名成功"}
+}
+
 func (a *App) DBGetAllColumns(config connection.ConnectionConfig, dbName string) connection.QueryResult {
 	runConfig := normalizeRunConfig(config, dbName)
 

internal/app/methods_file.go

@@ -14,9 +14,9 @@ import (
 
 	"GoNavi-Wails/internal/connection"
 	"GoNavi-Wails/internal/db"
-	"GoNavi-Wails/internal/logger"
 
 	"github.com/wailsapp/wails/v2/pkg/runtime"
+	"github.com/xuri/excelize/v2"
 )
 
 func (a *App) OpenSQLFile() connection.QueryResult {
@@ -77,13 +77,40 @@ func (a *App) ImportConfigFile() connection.QueryResult {
 	return connection.QueryResult{Success: true, Data: string(content)}
 }
 
+// PreviewImportFile 解析导入文件，返回字段列表、总行数、前 5 行预览数据
+func (a *App) PreviewImportFile(filePath string) connection.QueryResult {
+	if filePath == "" {
+		return connection.QueryResult{Success: false, Message: "File path required"}
+	}
+
+	rows, columns, err := parseImportFile(filePath)
+	if err != nil {
+		return connection.QueryResult{Success: false, Message: err.Error()}
+	}
+
+	totalRows := len(rows)
+	previewRows := rows
+	if len(rows) > 5 {
+		previewRows = rows[:5]
+	}
+
+	result := map[string]interface{}{
+		"columns":     columns,
+		"totalRows":   totalRows,
+		"previewRows": previewRows,
+		"filePath":    filePath,
+	}
+
+	return connection.QueryResult{Success: true, Data: result}
+}
+
 func (a *App) ImportData(config connection.ConnectionConfig, dbName, tableName string) connection.QueryResult {
 	selection, err := runtime.OpenFileDialog(a.ctx, runtime.OpenDialogOptions{
 		Title: fmt.Sprintf("Import into %s", tableName),
 		Filters: []runtime.FileFilter{
 			{
 				DisplayName: "Data Files",
-				Pattern:     "*.csv;*.json",
+				Pattern:     "*.csv;*.json;*.xlsx;*.xls",
 			},
 		},
 	})
@@ -96,44 +123,249 @@ func (a *App) ImportData(config connection.ConnectionConfig, dbName, tableName s
 		return connection.QueryResult{Success: false, Message: "Cancelled"}
 	}
 
-	f, err := os.Open(selection)
-	if err != nil {
-		return connection.QueryResult{Success: false, Message: err.Error()}
-	}
-	defer f.Close()
+	// 返回文件路径供前端预览
+	return connection.QueryResult{Success: true, Data: map[string]interface{}{"filePath": selection}}
+}
 
+// parseImportFile 解析导入文件，返回数据行和列名
+func parseImportFile(filePath string) ([]map[string]interface{}, []string, error) {
 	var rows []map[string]interface{}
+	var columns []string
+	lower := strings.ToLower(filePath)
 
-	if strings.HasSuffix(strings.ToLower(selection), ".json") {
+	if strings.HasSuffix(lower, ".json") {
+		f, err := os.Open(filePath)
+		if err != nil {
+			return nil, nil, err
+		}
+		defer f.Close()
 		decoder := json.NewDecoder(f)
 		if err := decoder.Decode(&rows); err != nil {
-			return connection.QueryResult{Success: false, Message: "JSON Parse Error: " + err.Error()}
+			return nil, nil, fmt.Errorf("JSON Parse Error: %w", err)
 		}
-	} else if strings.HasSuffix(strings.ToLower(selection), ".csv") {
+		if len(rows) > 0 {
+			for k := range rows[0] {
+				columns = append(columns, k)
+			}
+		}
+	} else if strings.HasSuffix(lower, ".csv") {
+		f, err := os.Open(filePath)
+		if err != nil {
+			return nil, nil, err
+		}
+		defer f.Close()
 		reader := csv.NewReader(f)
 		records, err := reader.ReadAll()
 		if err != nil {
-			return connection.QueryResult{Success: false, Message: "CSV Parse Error: " + err.Error()}
+			return nil, nil, fmt.Errorf("CSV Parse Error: %w", err)
 		}
 		if len(records) < 2 {
-			return connection.QueryResult{Success: false, Message: "CSV empty or missing header"}
+			return nil, nil, fmt.Errorf("CSV empty or missing header")
 		}
-		headers := records[0]
+		columns = records[0]
 		for _, record := range records[1:] {
 			row := make(map[string]interface{})
 			for i, val := range record {
-				if i < len(headers) {
+				if i < len(columns) {
 					if val == "NULL" {
-						row[headers[i]] = nil
+						row[columns[i]] = nil
 					} else {
-						row[headers[i]] = val
+						row[columns[i]] = val
 					}
 				}
 			}
 			rows = append(rows, row)
 		}
+	} else if strings.HasSuffix(lower, ".xlsx") || strings.HasSuffix(lower, ".xls") {
+		xlsx, err := excelize.OpenFile(filePath)
+		if err != nil {
+			return nil, nil, fmt.Errorf("Excel Parse Error: %w", err)
+		}
+		defer xlsx.Close()
+
+		sheetName := xlsx.GetSheetName(0)
+		if sheetName == "" {
+			return nil, nil, fmt.Errorf("Excel file has no sheets")
+		}
+
+		xlRows, err := xlsx.GetRows(sheetName)
+		if err != nil {
+			return nil, nil, fmt.Errorf("Excel Read Error: %w", err)
+		}
+		if len(xlRows) < 2 {
+			return nil, nil, fmt.Errorf("Excel empty or missing header")
+		}
+
+		columns = xlRows[0]
+		for _, record := range xlRows[1:] {
+			row := make(map[string]interface{})
+			for i, val := range record {
+				if i < len(columns) && columns[i] != "" {
+					if val == "NULL" {
+						row[columns[i]] = nil
+					} else {
+						row[columns[i]] = val
+					}
+				}
+			}
+			if len(row) > 0 {
+				rows = append(rows, row)
+			}
+		}
 	} else {
-		return connection.QueryResult{Success: false, Message: "Unsupported file format"}
+		return nil, nil, fmt.Errorf("Unsupported file format")
+	}
+
+	return rows, columns, nil
+}
+
+func normalizeColumnName(name string) string {
+	return strings.ToLower(strings.TrimSpace(name))
+}
+
+func buildImportColumnTypeMap(defs []connection.ColumnDefinition) map[string]string {
+	result := make(map[string]string, len(defs))
+	for _, def := range defs {
+		key := normalizeColumnName(def.Name)
+		if key == "" {
+			continue
+		}
+		result[key] = strings.TrimSpace(def.Type)
+	}
+	return result
+}
+
+func isTimezoneAwareColumnType(columnType string) bool {
+	typ := strings.ToLower(strings.TrimSpace(columnType))
+	if typ == "" {
+		return false
+	}
+	return strings.Contains(typ, "with time zone") ||
+		strings.Contains(typ, "with timezone") ||
+		strings.Contains(typ, "datetimeoffset") ||
+		strings.Contains(typ, "timestamptz")
+}
+
+func isDateTimeColumnType(columnType string) bool {
+	typ := strings.ToLower(strings.TrimSpace(columnType))
+	if typ == "" {
+		return false
+	}
+	return strings.Contains(typ, "datetime") || strings.Contains(typ, "timestamp")
+}
+
+func isTimeOnlyColumnType(columnType string) bool {
+	typ := strings.ToLower(strings.TrimSpace(columnType))
+	if typ == "" {
+		return false
+	}
+	if strings.Contains(typ, "datetime") || strings.Contains(typ, "timestamp") {
+		return false
+	}
+	return strings.Contains(typ, "time")
+}
+
+func isDateOnlyColumnType(dbType, columnType string) bool {
+	typ := strings.ToLower(strings.TrimSpace(columnType))
+	if typ == "" {
+		return false
+	}
+	if strings.Contains(typ, "datetime") || strings.Contains(typ, "timestamp") || strings.Contains(typ, "time") {
+		return false
+	}
+	if !strings.Contains(typ, "date") {
+		return false
+	}
+	db := strings.ToLower(strings.TrimSpace(dbType))
+	// Oracle/Dameng 的 DATE 带时间语义，不能按纯日期裁剪。
+	return db != "oracle" && db != "dameng"
+}
+
+func isTemporalColumnType(dbType, columnType string) bool {
+	return isDateTimeColumnType(columnType) || isTimeOnlyColumnType(columnType) || isDateOnlyColumnType(dbType, columnType)
+}
+
+func parseTemporalString(raw string) (time.Time, bool) {
+	text := strings.TrimSpace(raw)
+	if text == "" {
+		return time.Time{}, false
+	}
+
+	layouts := []string{
+		"2006-01-02 15:04:05.999999999 -0700 MST",
+		"2006-01-02 15:04:05 -0700 MST",
+		"2006-01-02 15:04:05.999999999 -0700",
+		"2006-01-02 15:04:05 -0700",
+		time.RFC3339Nano,
+		time.RFC3339,
+		"2006-01-02 15:04:05.999999999",
+		"2006-01-02 15:04:05",
+		"2006-01-02",
+		"15:04:05.999999999",
+		"15:04:05",
+	}
+
+	for _, layout := range layouts {
+		parsed, err := time.Parse(layout, text)
+		if err == nil {
+			return parsed, true
+		}
+	}
+
+	return time.Time{}, false
+}
+
+func normalizeImportTemporalValue(dbType, columnType, raw string) string {
+	text := strings.TrimSpace(raw)
+	if text == "" {
+		return text
+	}
+
+	parsed, ok := parseTemporalString(text)
+	if !ok {
+		if isDateTimeColumnType(columnType) {
+			candidate := strings.ReplaceAll(text, "T", " ")
+			if len(candidate) >= 19 {
+				prefix := candidate[:19]
+				if _, err := time.Parse("2006-01-02 15:04:05", prefix); err == nil {
+					return prefix
+				}
+			}
+		}
+		return text
+	}
+
+	if isTimeOnlyColumnType(columnType) {
+		return parsed.Format("15:04:05")
+	}
+	if isDateOnlyColumnType(dbType, columnType) {
+		return parsed.Format("2006-01-02")
+	}
+	if isTimezoneAwareColumnType(columnType) {
+		return parsed.Format("2006-01-02 15:04:05-07:00")
+	}
+	return parsed.Format("2006-01-02 15:04:05")
+}
+
+func formatImportSQLValue(dbType, columnType string, value interface{}) string {
+	if value == nil {
+		return "NULL"
+	}
+
+	if isTemporalColumnType(dbType, columnType) {
+		normalized := normalizeImportTemporalValue(dbType, columnType, fmt.Sprintf("%v", value))
+		escaped := strings.ReplaceAll(normalized, "'", "''")
+		return "'" + escaped + "'"
+	}
+
+	return formatSQLValue(dbType, value)
+}
+
+// ImportDataWithProgress 执行导入并发送进度事件
+func (a *App) ImportDataWithProgress(config connection.ConnectionConfig, dbName, tableName, filePath string) connection.QueryResult {
+	rows, columns, err := parseImportFile(filePath)
+	if err != nil {
+		return connection.QueryResult{Success: false, Message: err.Error()}
 	}
 
 	if len(rows) == 0 {
@@ -146,29 +378,27 @@ func (a *App) ImportData(config connection.ConnectionConfig, dbName, tableName s
 		return connection.QueryResult{Success: false, Message: err.Error()}
 	}
 
-	successCount := 0
-	errCount := 0
-	firstRow := rows[0]
-	var cols []string
-	for k := range firstRow {
-		cols = append(cols, k)
+	schemaName, pureTableName := normalizeSchemaAndTable(config, dbName, tableName)
+	columnTypeMap := map[string]string{}
+	if defs, colErr := dbInst.GetColumns(schemaName, pureTableName); colErr == nil {
+		columnTypeMap = buildImportColumnTypeMap(defs)
 	}
 
-	for _, row := range rows {
+	totalRows := len(rows)
+	successCount := 0
+	var errorLogs []string
+
+	quotedCols := make([]string, len(columns))
+	for i, c := range columns {
+		quotedCols[i] = quoteIdentByType(runConfig.Type, c)
+	}
+
+	for idx, row := range rows {
 		var values []string
-		for _, col := range cols {
+		for _, col := range columns {
 			val := row[col]
-			if val == nil {
-				values = append(values, "NULL")
-			} else {
-				vStr := fmt.Sprintf("%v", val)
-				vStr = strings.ReplaceAll(vStr, "'", "''")
-				values = append(values, fmt.Sprintf("'%s'", vStr))
-			}
-		}
-		quotedCols := make([]string, len(cols))
-		for i, c := range cols {
-			quotedCols[i] = quoteIdentByType(runConfig.Type, c)
+			colType := columnTypeMap[normalizeColumnName(col)]
+			values = append(values, formatImportSQLValue(runConfig.Type, colType, val))
 		}
 
 		query := fmt.Sprintf("INSERT INTO %s (%s) VALUES (%s)",
@@ -178,14 +408,31 @@ func (a *App) ImportData(config connection.ConnectionConfig, dbName, tableName s
 
 		_, err := dbInst.Exec(query)
 		if err != nil {
-			errCount++
-			logger.Error(err, "导入数据失败：表=%s", tableName)
+			errorLogs = append(errorLogs, fmt.Sprintf("Row %d: %s", idx+1, err.Error()))
 		} else {
 			successCount++
 		}
+
+		// 每 10 行发送一次进度事件
+		if (idx+1)%10 == 0 || idx == totalRows-1 {
+			runtime.EventsEmit(a.ctx, "import:progress", map[string]interface{}{
+				"current": idx + 1,
+				"total":   totalRows,
+				"success": successCount,
+				"errors":  len(errorLogs),
+			})
+		}
 	}
 
-	return connection.QueryResult{Success: true, Message: fmt.Sprintf("Imported: %d, Failed: %d", successCount, errCount)}
+	result := map[string]interface{}{
+		"success":      successCount,
+		"failed":       len(errorLogs),
+		"total":        totalRows,
+		"errorLogs":    errorLogs,
+		"errorSummary": fmt.Sprintf("Imported: %d, Failed: %d", successCount, len(errorLogs)),
+	}
+
+	return connection.QueryResult{Success: true, Data: result, Message: fmt.Sprintf("Imported: %d, Failed: %d", successCount, len(errorLogs))}
 }
 
 func (a *App) ApplyChanges(config connection.ConnectionConfig, dbName, tableName string, changes connection.ChangeSet) connection.QueryResult {
@@ -408,7 +655,7 @@ func quoteIdentByType(dbType string, ident string) string {
 	}
 
 	switch dbType {
-	case "mysql", "mariadb", "tdengine":
+	case "mysql", "mariadb", "sphinx", "tdengine":
 		return "`" + strings.ReplaceAll(ident, "`", "``") + "`"
 	case "sqlserver":
 		escaped := strings.ReplaceAll(ident, "]", "]]")
@@ -695,12 +942,17 @@ func writeRowsToFile(f *os.File, data []map[string]interface{}, columns []string
 		return fmt.Errorf("file required")
 	}
 
+	// xlsx 使用 excelize 写入真正的 Excel 格式
+	if format == "xlsx" {
+		return writeRowsToXlsx(f.Name(), data, columns)
+	}
+
 	var csvWriter *csv.Writer
 	var jsonEncoder *json.Encoder
 	isJsonFirstRow := true
 
 	switch format {
-	case "csv", "xlsx":
+	case "csv":
 		if _, err := f.Write([]byte{0xEF, 0xBB, 0xBF}); err != nil {
 			return err
 		}
@@ -738,7 +990,7 @@ func writeRowsToFile(f *os.File, data []map[string]interface{}, columns []string
 				continue
 			}
 
-			s := fmt.Sprintf("%v", val)
+			s := formatExportCellText(val)
 			if format == "md" {
 				s = strings.ReplaceAll(s, "|", "\\|")
 				s = strings.ReplaceAll(s, "\n", "<br>")
@@ -747,7 +999,7 @@ func writeRowsToFile(f *os.File, data []map[string]interface{}, columns []string
 		}
 
 		switch format {
-		case "csv", "xlsx":
+		case "csv":
 			if err := csvWriter.Write(record); err != nil {
 				return err
 			}
@@ -768,7 +1020,7 @@ func writeRowsToFile(f *os.File, data []map[string]interface{}, columns []string
 		}
 	}
 
-	if format == "csv" || format == "xlsx" {
+	if format == "csv" {
 		csvWriter.Flush()
 		if err := csvWriter.Error(); err != nil {
 			return err
@@ -783,3 +1035,50 @@ func writeRowsToFile(f *os.File, data []map[string]interface{}, columns []string
 
 	return nil
 }
+
+func formatExportCellText(val interface{}) string {
+	if val == nil {
+		return "NULL"
+	}
+
+	switch v := val.(type) {
+	case time.Time:
+		return v.Format("2006-01-02 15:04:05")
+	case *time.Time:
+		if v == nil {
+			return "NULL"
+		}
+		return v.Format("2006-01-02 15:04:05")
+	default:
+		return fmt.Sprintf("%v", val)
+	}
+}
+
+// writeRowsToXlsx 使用 excelize 写入真正的 xlsx 格式文件
+func writeRowsToXlsx(filename string, data []map[string]interface{}, columns []string) error {
+	xlsx := excelize.NewFile()
+	defer xlsx.Close()
+
+	sheet := "Sheet1"
+
+	// 写入表头
+	for i, col := range columns {
+		cell, _ := excelize.CoordinatesToCellName(i+1, 1)
+		xlsx.SetCellValue(sheet, cell, col)
+	}
+
+	// 写入数据行
+	for rowIdx, rowMap := range data {
+		for colIdx, col := range columns {
+			cell, _ := excelize.CoordinatesToCellName(colIdx+1, rowIdx+2)
+			val := rowMap[col]
+			if val == nil {
+				xlsx.SetCellValue(sheet, cell, "NULL")
+			} else {
+				xlsx.SetCellValue(sheet, cell, formatExportCellText(val))
+			}
+		}
+	}
+
+	return xlsx.SaveAs(filename)
+}

internal/app/methods_update.go

@@ -224,7 +224,19 @@ func (a *App) downloadAndStageUpdate(info UpdateInfo) connection.QueryResult {
 	// 使用版本号命名的工作目录，便于识别和调试
 	stagedDir := filepath.Join(workspaceDir, fmt.Sprintf(".gonavi-update-%s-%s", stdRuntime.GOOS, info.LatestVersion))
 	// 清理可能残留的旧目录（上次下载失败后未清理）
-	_ = os.RemoveAll(stagedDir)
+	// Windows 上文件可能被杀毒软件/索引服务占用，需要重试
+	for retry := 0; retry < 5; retry++ {
+		err := os.RemoveAll(stagedDir)
+		if err == nil {
+			break
+		}
+		if retry < 4 {
+			time.Sleep(time.Duration(retry+1) * 500 * time.Millisecond)
+		} else {
+			// 最后一次仍然失败，换一个带时间戳的目录名避免冲突
+			stagedDir = filepath.Join(workspaceDir, fmt.Sprintf(".gonavi-update-%s-%s-%d", stdRuntime.GOOS, info.LatestVersion, time.Now().UnixNano()))
+		}
+	}
 	if err := os.MkdirAll(stagedDir, 0o755); err != nil {
 		errMsg := fmt.Sprintf("无法在应用目录创建更新工作目录：%s", stagedDir)
 		a.emitUpdateDownloadProgress("error", 0, info.AssetSize, errMsg)
@@ -490,11 +502,21 @@ func downloadFileWithHash(url, filePath string, onProgress func(downloaded, tota
 		return "", fmt.Errorf("下载更新包失败：HTTP %d", resp.StatusCode)
 	}
 
-	out, err := os.Create(filePath)
-	if err != nil {
-		return "", err
+	// Windows 上旧文件可能被杀毒软件/索引服务占用，先尝试删除并重试
+	_ = os.Remove(filePath)
+	var out *os.File
+	for retry := 0; retry < 5; retry++ {
+		out, err = os.Create(filePath)
+		if err == nil {
+			break
+		}
+		if retry < 4 {
+			time.Sleep(time.Duration(retry+1) * 500 * time.Millisecond)
+		}
+	}
+	if err != nil {
+		return "", fmt.Errorf("更新下载失败，文件被占用：%w", err)
 	}
-	defer out.Close()
 
 	hasher := sha256.New()
 	total := resp.ContentLength
@@ -508,12 +530,22 @@ func downloadFileWithHash(url, filePath string, onProgress func(downloaded, tota
 		onProgress(0, total)
 	}
 	if _, err := io.Copy(io.MultiWriter(writers...), resp.Body); err != nil {
+		out.Close()
 		return "", err
 	}
 	if onProgress != nil {
 		onProgress(progressWriter.written, total)
 	}
 
+	// 显式 Sync + Close，确保数据落盘且文件句柄释放
+	if err := out.Sync(); err != nil {
+		out.Close()
+		return "", err
+	}
+	if err := out.Close(); err != nil {
+		return "", err
+	}
+
 	return hex.EncodeToString(hasher.Sum(nil)), nil
 }
 
@@ -544,18 +576,13 @@ func buildUpdateInstallLogPath(baseDir string) string {
 }
 
 func resolveUpdateWorkspaceDir() string {
-	exePath, err := os.Executable()
-	if err != nil {
-		return ""
-	}
-	exePath, _ = filepath.EvalSymlinks(exePath)
-	if stdRuntime.GOOS == "darwin" {
-		appPath := detectMacAppPath(exePath)
-		if appPath != "" {
-			return filepath.Dir(appPath)
-		}
-	}
-	return filepath.Dir(exePath)
+	// 使用系统临时目录作为更新工作区，避免以下问题：
+	// 1. Windows: exe 所在目录可能被杀毒软件/索引服务锁定，或缺少写权限（如 Program Files）
+	// 2. macOS: /Applications 需要管理员权限才能写入
+	// 3. 运行中的 exe 文件锁与 staging 文件冲突
+	dir := filepath.Join(os.TempDir(), "gonavi-updates")
+	_ = os.MkdirAll(dir, 0o755)
+	return dir
 }
 
 func resolveUpdateInstallTarget() string {
@@ -857,7 +884,12 @@ func detectMacAppPath(exePath string) string {
 	parts := strings.Split(exePath, string(filepath.Separator))
 	for i := len(parts) - 1; i >= 0; i-- {
 		if strings.HasSuffix(parts[i], ".app") {
-			return filepath.Join(parts[:i+1]...)
+			appPath := filepath.Join(parts[:i+1]...)
+			// 确保返回绝对路径
+			if !filepath.IsAbs(appPath) {
+				appPath = string(filepath.Separator) + appPath
+			}
+			return appPath
 		}
 	}
 	return ""

internal/app/window_translucency_darwin.go

@@ -47,14 +47,16 @@ static void gonaviTuneWindowTranslucency(NSWindow *window) {
 	[effectView setMaterial:NSVisualEffectMaterialHUDWindow];
 	[effectView setBlendingMode:NSVisualEffectBlendingModeBehindWindow];
 	[effectView setState:NSVisualEffectStateActive];
-	[effectView setAlphaValue:0.72];
+	// 默认 alpha=0（不可见），由前端根据用户外观设置动态启用
+	[effectView setAlphaValue:0.0];
 	[effectView setWantsLayer:YES];
 	[[effectView layer] setCornerRadius:cornerRadius];
 	[[effectView layer] setMasksToBounds:YES];
 }
 
 static void gonaviApplyWindowTranslucencyFix() {
-	for (int i = 0; i < 24; i++) {
+	// 启动时应用窗口透明度修复，减少重试次数以降低启动期 GPU 负载
+	for (int i = 0; i < 8; i++) {
 		dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(i * 250 * NSEC_PER_MSEC)), dispatch_get_main_queue(), ^{
 			for (NSWindow *window in [NSApp windows]) {
 				gonaviTuneWindowTranslucency(window);
@@ -62,9 +64,56 @@ static void gonaviApplyWindowTranslucencyFix() {
 		});
 	}
 }
+
+// 动态设置 NSVisualEffectView 的透明度和窗口不透明标志。
+// alpha <= 0 时窗口标记为 opaque，GPU 不再持续计算窗口背后的模糊效果。
+static void gonaviSetEffectViewAlpha(double alpha) {
+	dispatch_async(dispatch_get_main_queue(), ^{
+		for (NSWindow *window in [NSApp windows]) {
+			NSView *contentView = [window contentView];
+			if (contentView == nil) {
+				continue;
+			}
+
+			for (NSView *subview in [contentView subviews]) {
+				if ([subview isKindOfClass:[NSVisualEffectView class]]) {
+					NSVisualEffectView *effectView = (NSVisualEffectView *)subview;
+					[effectView setAlphaValue:alpha];
+					break;
+				}
+			}
+
+			if (alpha <= 0.01) {
+				[window setOpaque:YES];
+			} else {
+				[window setOpaque:NO];
+				[window setBackgroundColor:[NSColor clearColor]];
+			}
+		}
+	});
+}
 */
 import "C"
 
 func applyMacWindowTranslucencyFix() {
 	C.gonaviApplyWindowTranslucencyFix()
 }
+
+// setMacWindowTranslucency 根据用户外观设置动态调整 macOS 窗口透明度。
+// opacity=1.0 且 blur=0 时关闭 NSVisualEffectView（alpha=0），窗口标记为 opaque，
+// GPU 不再持续计算窗口背后的模糊合成，显著降低 CPU/GPU 温度。
+func setMacWindowTranslucency(opacity float64, blur float64) {
+	if opacity >= 0.999 && blur <= 0 {
+		C.gonaviSetEffectViewAlpha(C.double(0.0))
+	} else {
+		// 半透明模式：NSVisualEffectView alpha 根据透明度动态映射
+		alpha := (1.0 - opacity) * 1.2
+		if alpha < 0.3 {
+			alpha = 0.3
+		}
+		if alpha > 0.85 {
+			alpha = 0.85
+		}
+		C.gonaviSetEffectViewAlpha(C.double(alpha))
+	}
+}

internal/app/window_translucency_stub.go

@@ -3,3 +3,5 @@
 package app
 
 func applyMacWindowTranslucencyFix() {}
+
+func setMacWindowTranslucency(opacity float64, blur float64) {}

internal/connection/types.go

@@ -11,18 +11,31 @@ type SSHConfig struct {
 
 // ConnectionConfig holds database connection details including SSH
 type ConnectionConfig struct {
-	Type     string    `json:"type"`
-	Host     string    `json:"host"`
-	Port     int       `json:"port"`
-	User     string    `json:"user"`
-	Password string    `json:"password"`
-	Database string    `json:"database"`
-	UseSSH   bool      `json:"useSSH"`
-	SSH      SSHConfig `json:"ssh"`
-	Driver   string    `json:"driver,omitempty"`  // For custom connection
-	DSN      string    `json:"dsn,omitempty"`     // For custom connection
-	Timeout  int       `json:"timeout,omitempty"` // Connection timeout in seconds (default: 30)
-	RedisDB  int       `json:"redisDB,omitempty"` // Redis database index (0-15)
+	Type                 string    `json:"type"`
+	Host                 string    `json:"host"`
+	Port                 int       `json:"port"`
+	User                 string    `json:"user"`
+	Password             string    `json:"password"`
+	SavePassword         bool      `json:"savePassword,omitempty"` // Persist password in saved connection
+	Database             string    `json:"database"`
+	UseSSH               bool      `json:"useSSH"`
+	SSH                  SSHConfig `json:"ssh"`
+	Driver               string    `json:"driver,omitempty"`               // For custom connection
+	DSN                  string    `json:"dsn,omitempty"`                  // For custom connection
+	Timeout              int       `json:"timeout,omitempty"`              // Connection timeout in seconds (default: 30)
+	RedisDB              int       `json:"redisDB,omitempty"`              // Redis database index (0-15)
+	URI                  string    `json:"uri,omitempty"`                  // Connection URI for copy/paste
+	Hosts                []string  `json:"hosts,omitempty"`                // Multi-host addresses: host:port
+	Topology             string    `json:"topology,omitempty"`             // single | replica
+	MySQLReplicaUser     string    `json:"mysqlReplicaUser,omitempty"`     // MySQL replica auth user
+	MySQLReplicaPassword string    `json:"mysqlReplicaPassword,omitempty"` // MySQL replica auth password
+	ReplicaSet           string    `json:"replicaSet,omitempty"`           // MongoDB replica set name
+	AuthSource           string    `json:"authSource,omitempty"`           // MongoDB authSource
+	ReadPreference       string    `json:"readPreference,omitempty"`       // MongoDB readPreference
+	MongoSRV             bool      `json:"mongoSrv,omitempty"`             // MongoDB use mongodb+srv URI scheme
+	MongoAuthMechanism   string    `json:"mongoAuthMechanism,omitempty"`   // MongoDB authMechanism
+	MongoReplicaUser     string    `json:"mongoReplicaUser,omitempty"`     // MongoDB replica auth user
+	MongoReplicaPassword string    `json:"mongoReplicaPassword,omitempty"` // MongoDB replica auth password
 }
 
 // QueryResult is the standard response format for Wails methods
@@ -89,3 +102,12 @@ type ChangeSet struct {
 	Updates []UpdateRow              `json:"updates"`
 	Deletes []map[string]interface{} `json:"deletes"`
 }
+
+type MongoMemberInfo struct {
+	Host      string `json:"host"`
+	Role      string `json:"role"`
+	State     string `json:"state"`
+	StateCode int    `json:"stateCode,omitempty"`
+	Healthy   bool   `json:"healthy"`
+	IsSelf    bool   `json:"isSelf,omitempty"`
+}

internal/db/database.go

@@ -48,6 +48,8 @@ func NewDatabase(dbType string) (Database, error) {
 		return &HighGoDB{}, nil
 	case "mariadb":
 		return &MariaDB{}, nil
+	case "sphinx":
+		return &SphinxDB{}, nil
 	case "vastbase":
 		return &VastbaseDB{}, nil
 	case "tdengine":

internal/db/highgo_impl.go

@@ -15,7 +15,7 @@ import (
 	"GoNavi-Wails/internal/ssh"
 	"GoNavi-Wails/internal/utils"
 
-	_ "github.com/lib/pq" // HighGo is PostgreSQL compatible
+	_ "github.com/highgo/pq-sm3" // HighGo uses dedicated SM3-capable driver
 )
 
 // HighGoDB implements Database interface for HighGo (瀚高) database
@@ -80,7 +80,7 @@ func (h *HighGoDB) Connect(config connection.ConnectionConfig) error {
 		dsn = h.getDSN(config)
 	}
 
-	db, err := sql.Open("postgres", dsn)
+	db, err := sql.Open("highgo", dsn)
 	if err != nil {
 		return fmt.Errorf("打开数据库连接失败：%w", err)
 	}

internal/db/mongodb_impl.go

@@ -5,6 +5,7 @@ import (
 	"fmt"
 	"net"
 	"net/url"
+	"sort"
 	"strconv"
 	"strings"
 	"time"
@@ -26,53 +27,264 @@ type MongoDB struct {
 	forwarder   *ssh.LocalForwarder
 }
 
-func (m *MongoDB) getURI(config connection.ConnectionConfig) string {
-	// mongodb://user:password@host:port/database?authSource=admin
-	host := config.Host
-	port := config.Port
-	if port == 0 {
-		port = 27017
+const defaultMongoPort = 27017
+
+func normalizeMongoAddress(host string, port int) string {
+	h := strings.TrimSpace(host)
+	if h == "" {
+		h = "localhost"
+	}
+	p := port
+	if p <= 0 {
+		p = defaultMongoPort
+	}
+	return fmt.Sprintf("%s:%d", h, p)
+}
+
+func normalizeMongoSeed(raw string, defaultPort int, useSRV bool) (string, bool) {
+	host, port, ok := parseHostPortWithDefault(raw, defaultPort)
+	if !ok {
+		return "", false
 	}
 
-	uri := fmt.Sprintf("mongodb://%s:%d", host, port)
+	if useSRV {
+		normalized := strings.TrimSpace(host)
+		if normalized == "" {
+			return "", false
+		}
+		return normalized, true
+	}
 
-	if config.User != "" {
-		encodedUser := url.QueryEscape(config.User)
-		if config.Password != "" {
-			encodedPass := url.QueryEscape(config.Password)
-			uri = fmt.Sprintf("mongodb://%s:%s@%s:%d", encodedUser, encodedPass, host, port)
+	return normalizeMongoAddress(host, port), true
+}
+
+func collectMongoSeeds(config connection.ConnectionConfig) []string {
+	defaultPort := config.Port
+	if defaultPort <= 0 {
+		defaultPort = defaultMongoPort
+	}
+	useSRV := config.MongoSRV
+
+	candidates := make([]string, 0, len(config.Hosts)+1)
+	if len(config.Hosts) > 0 {
+		candidates = append(candidates, config.Hosts...)
+	} else {
+		if useSRV {
+			candidates = append(candidates, strings.TrimSpace(config.Host))
 		} else {
-			uri = fmt.Sprintf("mongodb://%s@%s:%d", encodedUser, host, port)
+			candidates = append(candidates, normalizeMongoAddress(config.Host, defaultPort))
 		}
 	}
 
-	// Add connection options
-	params := []string{}
-	timeout := getConnectTimeoutSeconds(config)
-	params = append(params, fmt.Sprintf("connectTimeoutMS=%d", timeout*1000))
-	params = append(params, fmt.Sprintf("serverSelectionTimeoutMS=%d", timeout*1000))
-
-	// authSource: 优先使用 config.Database，为空时默认 admin
-	authSource := "admin"
-	if config.Database != "" {
-		authSource = config.Database
+	result := make([]string, 0, len(candidates))
+	seen := make(map[string]struct{}, len(candidates))
+	for _, entry := range candidates {
+		normalized, ok := normalizeMongoSeed(entry, defaultPort, useSRV)
+		if !ok {
+			continue
+		}
+		if _, exists := seen[normalized]; exists {
+			continue
+		}
+		seen[normalized] = struct{}{}
+		result = append(result, normalized)
 	}
-	params = append(params, fmt.Sprintf("authSource=%s", authSource))
 
-	if len(params) > 0 {
-		uri = uri + "/?" + strings.Join(params, "&")
+	return result
+}
+
+func applyMongoURI(config connection.ConnectionConfig) connection.ConnectionConfig {
+	uriText := strings.TrimSpace(config.URI)
+	if uriText == "" {
+		return config
+	}
+	lowerURI := strings.ToLower(uriText)
+	if strings.HasPrefix(lowerURI, "mongodb+srv://") {
+		config.MongoSRV = true
+	}
+	if !strings.HasPrefix(lowerURI, "mongodb://") && !strings.HasPrefix(lowerURI, "mongodb+srv://") {
+		return config
+	}
+
+	parsed, err := url.Parse(uriText)
+	if err != nil {
+		return config
+	}
+
+	if parsed.User != nil {
+		if config.User == "" {
+			config.User = parsed.User.Username()
+		}
+		if pass, ok := parsed.User.Password(); ok && config.Password == "" {
+			config.Password = pass
+		}
+	}
+
+	if dbName := strings.TrimPrefix(parsed.Path, "/"); dbName != "" && config.Database == "" {
+		config.Database = dbName
+	}
+
+	defaultPort := config.Port
+	if defaultPort <= 0 {
+		defaultPort = defaultMongoPort
+	}
+	hostsFromURI := make([]string, 0, 4)
+	hostText := strings.TrimSpace(parsed.Host)
+	if hostText != "" {
+		for _, entry := range strings.Split(hostText, ",") {
+			normalized, ok := normalizeMongoSeed(entry, defaultPort, config.MongoSRV)
+			if ok {
+				hostsFromURI = append(hostsFromURI, normalized)
+			}
+		}
+	}
+
+	if len(config.Hosts) == 0 && len(hostsFromURI) > 0 {
+		config.Hosts = hostsFromURI
+	}
+	if strings.TrimSpace(config.Host) == "" && len(hostsFromURI) > 0 {
+		host, port, ok := parseHostPortWithDefault(hostsFromURI[0], defaultPort)
+		if ok {
+			config.Host = host
+			config.Port = port
+		}
+	}
+
+	query := parsed.Query()
+	if config.AuthSource == "" {
+		config.AuthSource = strings.TrimSpace(query.Get("authSource"))
+	}
+	if config.ReadPreference == "" {
+		config.ReadPreference = strings.TrimSpace(query.Get("readPreference"))
+	}
+	if config.ReplicaSet == "" {
+		config.ReplicaSet = strings.TrimSpace(query.Get("replicaSet"))
+	}
+	if config.MongoAuthMechanism == "" {
+		config.MongoAuthMechanism = strings.TrimSpace(query.Get("authMechanism"))
+	}
+	if config.Topology == "" {
+		if len(config.Hosts) > 1 || strings.TrimSpace(config.ReplicaSet) != "" {
+			config.Topology = "replica"
+		} else {
+			config.Topology = "single"
+		}
+	}
+
+	return config
+}
+
+func (m *MongoDB) getURI(config connection.ConnectionConfig) string {
+	if strings.TrimSpace(config.URI) != "" {
+		return strings.TrimSpace(config.URI)
+	}
+
+	seeds := collectMongoSeeds(config)
+	if len(seeds) == 0 {
+		if config.MongoSRV {
+			seed := strings.TrimSpace(config.Host)
+			if seed == "" {
+				seed = "localhost"
+			}
+			seeds = append(seeds, seed)
+		} else {
+			seeds = append(seeds, normalizeMongoAddress(config.Host, config.Port))
+		}
+	}
+
+	scheme := "mongodb"
+	if config.MongoSRV {
+		scheme = "mongodb+srv"
+	}
+	hostText := strings.Join(seeds, ",")
+	uri := fmt.Sprintf("%s://%s", scheme, hostText)
+
+	if config.User != "" {
+		var userinfo *url.Userinfo
+		if config.Password != "" {
+			userinfo = url.UserPassword(config.User, config.Password)
+		} else {
+			userinfo = url.User(config.User)
+		}
+		uri = fmt.Sprintf("%s://%s@%s", scheme, userinfo.String(), hostText)
+	}
+
+	path := "/"
+	if strings.TrimSpace(config.Database) != "" {
+		path = "/" + url.PathEscape(strings.TrimSpace(config.Database))
+	}
+	uri += path
+
+	params := url.Values{}
+	timeout := getConnectTimeoutSeconds(config)
+	params.Set("connectTimeoutMS", strconv.Itoa(timeout*1000))
+	params.Set("serverSelectionTimeoutMS", strconv.Itoa(timeout*1000))
+
+	authSource := strings.TrimSpace(config.AuthSource)
+	if authSource == "" && strings.TrimSpace(config.Database) != "" {
+		authSource = strings.TrimSpace(config.Database)
+	}
+	if authSource == "" {
+		authSource = "admin"
+	}
+	params.Set("authSource", authSource)
+
+	if replicaSet := strings.TrimSpace(config.ReplicaSet); replicaSet != "" {
+		params.Set("replicaSet", replicaSet)
+	}
+	if readPreference := strings.TrimSpace(config.ReadPreference); readPreference != "" {
+		params.Set("readPreference", readPreference)
+	}
+	if authMechanism := strings.TrimSpace(config.MongoAuthMechanism); authMechanism != "" {
+		params.Set("authMechanism", authMechanism)
+	}
+
+	if encoded := params.Encode(); encoded != "" {
+		uri += "?" + encoded
 	}
 
 	return uri
 }
 
+func buildMongoAuthAttempts(config connection.ConnectionConfig) []connection.ConnectionConfig {
+	attempts := []connection.ConnectionConfig{config}
+	replicaUser := strings.TrimSpace(config.MongoReplicaUser)
+	if replicaUser == "" {
+		return attempts
+	}
+	if replicaUser == strings.TrimSpace(config.User) && config.MongoReplicaPassword == config.Password {
+		return attempts
+	}
+
+	replicaConfig := config
+	replicaConfig.URI = ""
+	replicaConfig.User = replicaUser
+	replicaConfig.Password = config.MongoReplicaPassword
+	attempts = append(attempts, replicaConfig)
+	return attempts
+}
+
 func (m *MongoDB) Connect(config connection.ConnectionConfig) error {
-	var uri string
+	runConfig := applyMongoURI(config)
+	connectConfig := runConfig
 
-	if config.UseSSH {
-		logger.Infof("MongoDB 使用 SSH 连接：地址=%s:%d", config.Host, config.Port)
+	if runConfig.UseSSH && runConfig.MongoSRV {
+		return fmt.Errorf("MongoDB SRV 记录模式暂不支持 SSH 隧道")
+	}
 
-		forwarder, err := ssh.GetOrCreateLocalForwarder(config.SSH, config.Host, config.Port)
+	if runConfig.UseSSH {
+		seeds := collectMongoSeeds(runConfig)
+		if len(seeds) == 0 {
+			seeds = append(seeds, normalizeMongoAddress(runConfig.Host, runConfig.Port))
+		}
+		targetHost, targetPort, ok := parseHostPortWithDefault(seeds[0], defaultMongoPort)
+		if !ok {
+			return fmt.Errorf("MongoDB 连接失败：无效地址 %s", seeds[0])
+		}
+
+		logger.Infof("MongoDB 使用 SSH 连接：地址=%s:%d", targetHost, targetPort)
+
+		forwarder, err := ssh.GetOrCreateLocalForwarder(runConfig.SSH, targetHost, targetPort)
 		if err != nil {
 			return fmt.Errorf("创建 SSH 隧道失败：%w", err)
 		}
@@ -88,35 +300,55 @@ func (m *MongoDB) Connect(config connection.ConnectionConfig) error {
 			return fmt.Errorf("解析本地端口失败：%w", err)
 		}
 
-		localConfig := config
+		localConfig := runConfig
 		localConfig.Host = host
 		localConfig.Port = port
 		localConfig.UseSSH = false
-
-		uri = m.getURI(localConfig)
-		logger.Infof("MongoDB 通过本地端口转发连接：%s -> %s:%d", forwarder.LocalAddr, config.Host, config.Port)
-	} else {
-		uri = m.getURI(config)
+		localConfig.URI = ""
+		localConfig.Hosts = []string{normalizeMongoAddress(host, port)}
+		connectConfig = localConfig
+		logger.Infof("MongoDB 通过本地端口转发连接：%s -> %s:%d", forwarder.LocalAddr, targetHost, targetPort)
 	}
 
-	m.pingTimeout = getConnectTimeout(config)
-	m.database = config.Database
+	m.pingTimeout = getConnectTimeout(connectConfig)
+	m.database = connectConfig.Database
 	if m.database == "" {
 		m.database = "admin"
 	}
 
-	clientOpts := options.Client().ApplyURI(uri)
-	client, err := mongo.Connect(clientOpts)
-	if err != nil {
-		return fmt.Errorf("MongoDB 连接失败：%w", err)
-	}
-	m.client = client
+	attemptConfigs := buildMongoAuthAttempts(connectConfig)
+	var errorDetails []string
+	for index, attemptConfig := range attemptConfigs {
+		authLabel := "主库凭据"
+		if index > 0 {
+			authLabel = "从库凭据"
+		}
 
-	if err := m.Ping(); err != nil {
-		return fmt.Errorf("MongoDB 连接验证失败：%w", err)
+		uri := m.getURI(attemptConfig)
+		clientOpts := options.Client().ApplyURI(uri)
+		client, err := mongo.Connect(clientOpts)
+		if err != nil {
+			errorDetails = append(errorDetails, fmt.Sprintf("%s连接失败: %v", authLabel, err))
+			continue
+		}
+
+		m.client = client
+		if err := m.Ping(); err != nil {
+			ctx, cancel := context.WithTimeout(context.Background(), 3*time.Second)
+			_ = client.Disconnect(ctx)
+			cancel()
+			m.client = nil
+			errorDetails = append(errorDetails, fmt.Sprintf("%s验证失败: %v", authLabel, err))
+			continue
+		}
+		return nil
 	}
 
-	return nil
+	if len(errorDetails) > 0 {
+		return fmt.Errorf("MongoDB 连接失败：%s", strings.Join(errorDetails, "；"))
+	}
+
+	return fmt.Errorf("MongoDB 连接失败：无可用连接方案")
 }
 
 func (m *MongoDB) Close() error {
@@ -148,6 +380,243 @@ func (m *MongoDB) Ping() error {
 	return m.client.Ping(ctx, readpref.Primary())
 }
 
+func asMongoStringList(raw interface{}) []string {
+	values, ok := raw.(bson.A)
+	if !ok {
+		return nil
+	}
+	result := make([]string, 0, len(values))
+	for _, entry := range values {
+		text := strings.TrimSpace(fmt.Sprintf("%v", entry))
+		if text != "" {
+			result = append(result, text)
+		}
+	}
+	return result
+}
+
+func asMongoString(raw interface{}) string {
+	if raw == nil {
+		return ""
+	}
+	if value, ok := raw.(string); ok {
+		return strings.TrimSpace(value)
+	}
+	return strings.TrimSpace(fmt.Sprintf("%v", raw))
+}
+
+func asMongoInt(raw interface{}) int {
+	switch value := raw.(type) {
+	case int:
+		return value
+	case int32:
+		return int(value)
+	case int64:
+		return int(value)
+	case float32:
+		return int(value)
+	case float64:
+		return int(value)
+	default:
+		return 0
+	}
+}
+
+func asMongoBool(raw interface{}) bool {
+	switch value := raw.(type) {
+	case bool:
+		return value
+	case int:
+		return value != 0
+	case int32:
+		return value != 0
+	case int64:
+		return value != 0
+	case float32:
+		return value != 0
+	case float64:
+		return value != 0
+	default:
+		return false
+	}
+}
+
+func asMongoInt64(raw interface{}) int64 {
+	switch value := raw.(type) {
+	case int:
+		return int64(value)
+	case int32:
+		return int64(value)
+	case int64:
+		return value
+	case float32:
+		return int64(value)
+	case float64:
+		return int64(value)
+	default:
+		return 0
+	}
+}
+
+func mongoStateByCode(code int) string {
+	switch code {
+	case 1:
+		return "PRIMARY"
+	case 2:
+		return "SECONDARY"
+	case 3:
+		return "RECOVERING"
+	case 5:
+		return "STARTUP2"
+	case 6:
+		return "UNKNOWN"
+	case 7:
+		return "ARBITER"
+	case 8:
+		return "DOWN"
+	case 9:
+		return "ROLLBACK"
+	case 10:
+		return "REMOVED"
+	default:
+		return "UNKNOWN"
+	}
+}
+
+func normalizeMongoStateLabel(state string, stateCode int) string {
+	normalized := strings.ToUpper(strings.TrimSpace(state))
+	if normalized != "" {
+		return normalized
+	}
+	return mongoStateByCode(stateCode)
+}
+
+func buildMembersFromReplStatus(raw bson.M) []connection.MongoMemberInfo {
+	items, ok := raw["members"].(bson.A)
+	if !ok {
+		return nil
+	}
+
+	members := make([]connection.MongoMemberInfo, 0, len(items))
+	for _, entry := range items {
+		member, ok := entry.(bson.M)
+		if !ok {
+			continue
+		}
+		host := asMongoString(member["name"])
+		if host == "" {
+			continue
+		}
+		stateCode := asMongoInt(member["state"])
+		state := normalizeMongoStateLabel(asMongoString(member["stateStr"]), stateCode)
+		members = append(members, connection.MongoMemberInfo{
+			Host:      host,
+			Role:      state,
+			State:     state,
+			StateCode: stateCode,
+			Healthy:   asMongoInt(member["health"]) > 0 || asMongoBool(member["health"]),
+			IsSelf:    asMongoBool(member["self"]),
+		})
+	}
+
+	sort.Slice(members, func(i, j int) bool {
+		return members[i].Host < members[j].Host
+	})
+	return members
+}
+
+func buildMembersFromHello(raw bson.M) []connection.MongoMemberInfo {
+	hosts := asMongoStringList(raw["hosts"])
+	if len(hosts) == 0 {
+		return nil
+	}
+	primary := asMongoString(raw["primary"])
+	selfHost := asMongoString(raw["me"])
+	passiveSet := make(map[string]struct{})
+	for _, host := range asMongoStringList(raw["passives"]) {
+		passiveSet[host] = struct{}{}
+	}
+	arbiterSet := make(map[string]struct{})
+	for _, host := range asMongoStringList(raw["arbiters"]) {
+		arbiterSet[host] = struct{}{}
+	}
+
+	members := make([]connection.MongoMemberInfo, 0, len(hosts))
+	for _, host := range hosts {
+		state := "SECONDARY"
+		stateCode := 2
+		if host == primary {
+			state = "PRIMARY"
+			stateCode = 1
+		} else if _, ok := arbiterSet[host]; ok {
+			state = "ARBITER"
+			stateCode = 7
+		} else if _, ok := passiveSet[host]; ok {
+			state = "PASSIVE"
+			stateCode = 6
+		}
+		members = append(members, connection.MongoMemberInfo{
+			Host:      host,
+			Role:      state,
+			State:     state,
+			StateCode: stateCode,
+			Healthy:   true,
+			IsSelf:    host == selfHost,
+		})
+	}
+
+	sort.Slice(members, func(i, j int) bool {
+		return members[i].Host < members[j].Host
+	})
+	return members
+}
+
+func (m *MongoDB) DiscoverMembers() (string, []connection.MongoMemberInfo, error) {
+	if m.client == nil {
+		return "", nil, fmt.Errorf("connection not open")
+	}
+
+	timeout := m.pingTimeout
+	if timeout <= 0 {
+		timeout = 10 * time.Second
+	}
+	ctx, cancel := context.WithTimeout(context.Background(), timeout)
+	defer cancel()
+
+	adminDB := m.client.Database("admin")
+
+	var replStatus bson.M
+	replErr := adminDB.RunCommand(ctx, bson.D{{Key: "replSetGetStatus", Value: 1}}).Decode(&replStatus)
+	if replErr == nil {
+		replicaSet := asMongoString(replStatus["set"])
+		members := buildMembersFromReplStatus(replStatus)
+		if len(members) > 0 {
+			return replicaSet, members, nil
+		}
+	}
+
+	var helloResult bson.M
+	helloErr := adminDB.RunCommand(ctx, bson.D{{Key: "hello", Value: 1}}).Decode(&helloResult)
+	if helloErr != nil {
+		if err := adminDB.RunCommand(ctx, bson.D{{Key: "isMaster", Value: 1}}).Decode(&helloResult); err != nil {
+			if replErr != nil {
+				return "", nil, fmt.Errorf("成员发现失败：replSetGetStatus=%v；hello=%v", replErr, err)
+			}
+			return "", nil, fmt.Errorf("成员发现失败：hello=%w", err)
+		}
+	}
+
+	replicaSet := asMongoString(helloResult["setName"])
+	members := buildMembersFromHello(helloResult)
+	if len(members) == 0 {
+		if replErr != nil {
+			return replicaSet, nil, fmt.Errorf("未获取到成员信息：replSetGetStatus=%v", replErr)
+		}
+		return replicaSet, nil, fmt.Errorf("未获取到成员信息")
+	}
+	return replicaSet, members, nil
+}
+
 // Query executes a MongoDB command and returns results
 // Supports JSON format commands like: {"find": "collection", "filter": {}}
 func (m *MongoDB) Query(query string) ([]map[string]interface{}, []string, error) {
@@ -161,6 +630,98 @@ func (m *MongoDB) QueryContext(ctx context.Context, query string) ([]map[string]
 	return m.queryWithContext(ctx, query)
 }
 
+// sqlToMongoFind 将前端生成的简单 SQL 转换为 MongoDB find 命令 JSON。
+// 支持：SELECT * FROM "coll" LIMIT n OFFSET m / SELECT COUNT(*) as total FROM "coll"
+func sqlToMongoFind(sql string) (string, bool) {
+	lower := strings.ToLower(strings.TrimSpace(sql))
+
+	// SELECT COUNT(*) as total FROM "coll" ...
+	if strings.HasPrefix(lower, "select count(") {
+		coll := extractCollectionFromSQL(sql)
+		if coll == "" {
+			return "", false
+		}
+		return fmt.Sprintf(`{"count":"%s","query":{}}`, coll), true
+	}
+
+	// SELECT * FROM "coll" ... LIMIT n OFFSET m
+	if !strings.HasPrefix(lower, "select") {
+		return "", false
+	}
+	coll := extractCollectionFromSQL(sql)
+	if coll == "" {
+		return "", false
+	}
+
+	limit := int64(0)
+	skip := int64(0)
+
+	// 提取 LIMIT
+	if idx := strings.Index(lower, "limit "); idx >= 0 {
+		after := strings.TrimSpace(lower[idx+6:])
+		parts := strings.Fields(after)
+		if len(parts) > 0 {
+			if n, err := strconv.ParseInt(parts[0], 10, 64); err == nil {
+				limit = n
+			}
+		}
+	}
+
+	// 提取 OFFSET
+	if idx := strings.Index(lower, "offset "); idx >= 0 {
+		after := strings.TrimSpace(lower[idx+7:])
+		parts := strings.Fields(after)
+		if len(parts) > 0 {
+			if n, err := strconv.ParseInt(parts[0], 10, 64); err == nil {
+				skip = n
+			}
+		}
+	}
+
+	cmd := fmt.Sprintf(`{"find":"%s","filter":{}`, coll)
+	if limit > 0 {
+		cmd += fmt.Sprintf(`,"limit":%d`, limit)
+	}
+	if skip > 0 {
+		cmd += fmt.Sprintf(`,"skip":%d`, skip)
+	}
+	cmd += "}"
+	return cmd, true
+}
+
+// extractCollectionFromSQL 从 SQL 中提取 FROM 后的 collection 名称。
+func extractCollectionFromSQL(sql string) string {
+	lower := strings.ToLower(sql)
+	idx := strings.Index(lower, "from ")
+	if idx < 0 {
+		return ""
+	}
+	after := strings.TrimSpace(sql[idx+5:])
+
+	// 去掉引号包裹
+	var coll string
+	if len(after) > 0 && after[0] == '"' {
+		end := strings.Index(after[1:], "\"")
+		if end < 0 {
+			return ""
+		}
+		coll = after[1 : end+1]
+	} else if len(after) > 0 && after[0] == '`' {
+		end := strings.Index(after[1:], "`")
+		if end < 0 {
+			return ""
+		}
+		coll = after[1 : end+1]
+	} else {
+		parts := strings.Fields(after)
+		if len(parts) == 0 {
+			return ""
+		}
+		coll = parts[0]
+	}
+	return strings.TrimSpace(coll)
+}
+
 func (m *MongoDB) queryWithContext(ctx context.Context, query string) ([]map[string]interface{}, []string, error) {
 	if m.client == nil {
 		return nil, nil, fmt.Errorf("connection not open")
@@ -171,18 +732,44 @@ func (m *MongoDB) queryWithContext(ctx context.Context, query string) ([]map[str
 		return nil, nil, fmt.Errorf("empty query")
 	}
 
+	// 如果输入是 SQL 语句（前端 DataViewer 统一生成），自动转换为 MongoDB JSON 命令
+	lowerQuery := strings.ToLower(query)
+	if strings.HasPrefix(lowerQuery, "select") || strings.HasPrefix(lowerQuery, "show") {
+		if converted, ok := sqlToMongoFind(query); ok {
+			query = converted
+		}
+	}
+
 	// Parse JSON command
 	var cmd bson.D
 	if err := bson.UnmarshalExtJSON([]byte(query), true, &cmd); err != nil {
 		return nil, nil, fmt.Errorf("invalid JSON command: %w", err)
 	}
 
+	// 对 find 和 count 命令使用原生 driver API，避免 RunCommand 的 firstBatch 限制
+	if len(cmd) > 0 {
+		switch cmd[0].Key {
+		case "find":
+			return m.execFind(ctx, cmd)
+		case "count":
+			return m.execCount(ctx, cmd)
+		}
+	}
+
+	// 其他命令走 RunCommand
 	db := m.client.Database(m.database)
 	var result bson.M
 	if err := db.RunCommand(ctx, cmd).Decode(&result); err != nil {
 		return nil, nil, err
 	}
 
+	// Handle COUNT result (e.g. delete/update returns "n")
+	if n, ok := result["n"]; ok {
+		if _, hasCursor := result["cursor"]; !hasCursor {
+			return []map[string]interface{}{{"total": n}}, []string{"total"}, nil
+		}
+	}
+
 	// Convert result to standard format
 	data := []map[string]interface{}{{"result": result}}
 	columns := []string{"result"}
@@ -212,6 +799,156 @@ func (m *MongoDB) queryWithContext(ctx context.Context, query string) ([]map[str
 	return data, columns, nil
 }
 
+// execFind 使用原生 Collection.Find() 执行查询，正确处理游标迭代
+func (m *MongoDB) execFind(ctx context.Context, cmd bson.D) ([]map[string]interface{}, []string, error) {
+	var collName string
+	var filter interface{}
+	var limit int64
+	var skip int64
+	var sortDoc interface{}
+	var projection interface{}
+
+	for _, elem := range cmd {
+		switch elem.Key {
+		case "find":
+			collName = fmt.Sprintf("%v", elem.Value)
+		case "filter":
+			filter = elem.Value
+		case "limit":
+			limit = asMongoInt64(elem.Value)
+		case "skip":
+			skip = asMongoInt64(elem.Value)
+		case "sort":
+			sortDoc = elem.Value
+		case "projection":
+			projection = elem.Value
+		}
+	}
+
+	if collName == "" {
+		return nil, nil, fmt.Errorf("find command missing collection name")
+	}
+	if filter == nil {
+		filter = bson.D{}
+	}
+
+	collection := m.client.Database(m.database).Collection(collName)
+	opts := options.Find()
+	if limit > 0 {
+		opts.SetLimit(limit)
+	}
+	if skip > 0 {
+		opts.SetSkip(skip)
+	}
+	if sortDoc != nil {
+		opts.SetSort(sortDoc)
+	}
+	if projection != nil {
+		opts.SetProjection(projection)
+	}
+
+	cursor, err := collection.Find(ctx, filter, opts)
+	if err != nil {
+		return nil, nil, err
+	}
+	defer cursor.Close(ctx)
+
+	var data []map[string]interface{}
+	columnSet := make(map[string]bool)
+
+	for cursor.Next(ctx) {
+		var doc bson.M
+		if err := cursor.Decode(&doc); err != nil {
+			continue
+		}
+		row := make(map[string]interface{})
+		for k, v := range doc {
+			row[k] = convertBsonValue(v)
+			columnSet[k] = true
+		}
+		data = append(data, row)
+	}
+
+	if err := cursor.Err(); err != nil {
+		return nil, nil, err
+	}
+
+	columns := make([]string, 0, len(columnSet))
+	for k := range columnSet {
+		columns = append(columns, k)
+	}
+	sort.Strings(columns)
+
+	// 将 _id 列置首
+	for i, col := range columns {
+		if col == "_id" && i > 0 {
+			columns = append(columns[:i], columns[i+1:]...)
+			columns = append([]string{"_id"}, columns...)
+			break
+		}
+	}
+
+	return data, columns, nil
+}
+
+// execCount 使用原生 Collection.CountDocuments() 执行计数
+func (m *MongoDB) execCount(ctx context.Context, cmd bson.D) ([]map[string]interface{}, []string, error) {
+	var collName string
+	var filter interface{}
+
+	for _, elem := range cmd {
+		switch elem.Key {
+		case "count":
+			collName = fmt.Sprintf("%v", elem.Value)
+		case "query":
+			filter = elem.Value
+		}
+	}
+
+	if collName == "" {
+		return nil, nil, fmt.Errorf("count command missing collection name")
+	}
+	if filter == nil {
+		filter = bson.D{}
+	}
+
+	collection := m.client.Database(m.database).Collection(collName)
+	n, err := collection.CountDocuments(ctx, filter)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	return []map[string]interface{}{{"total": n}}, []string{"total"}, nil
+}
+
+// convertBsonValue 将 BSON 特殊类型转换为前端可读的 JSON 友好值
+func convertBsonValue(v interface{}) interface{} {
+	switch val := v.(type) {
+	case bson.ObjectID:
+		return val.Hex()
+	case bson.M:
+		result := make(map[string]interface{}, len(val))
+		for k, v2 := range val {
+			result[k] = convertBsonValue(v2)
+		}
+		return result
+	case bson.D:
+		result := make(map[string]interface{}, len(val))
+		for _, elem := range val {
+			result[elem.Key] = convertBsonValue(elem.Value)
+		}
+		return result
+	case bson.A:
+		result := make([]interface{}, len(val))
+		for i, v2 := range val {
+			result[i] = convertBsonValue(v2)
+		}
+		return result
+	default:
+		return v
+	}
+}
+
 func (m *MongoDB) Exec(query string) (int64, error) {
 	_, _, err := m.Query(query)
 	if err != nil {

internal/db/mysql_impl.go

@@ -4,6 +4,8 @@ import (
 	"context"
 	"database/sql"
 	"fmt"
+	"net/url"
+	"strconv"
 	"strings"
 	"time"
 
@@ -20,16 +22,161 @@ type MySQLDB struct {
 	pingTimeout time.Duration
 }
 
+const defaultMySQLPort = 3306
+
+func parseHostPortWithDefault(raw string, defaultPort int) (string, int, bool) {
+	text := strings.TrimSpace(raw)
+	if text == "" {
+		return "", 0, false
+	}
+
+	if strings.HasPrefix(text, "[") {
+		end := strings.Index(text, "]")
+		if end < 0 {
+			return text, defaultPort, true
+		}
+		host := text[1:end]
+		portText := strings.TrimSpace(text[end+1:])
+		if strings.HasPrefix(portText, ":") {
+			if p, err := strconv.Atoi(strings.TrimSpace(strings.TrimPrefix(portText, ":"))); err == nil && p > 0 {
+				return host, p, true
+			}
+		}
+		return host, defaultPort, true
+	}
+
+	lastColon := strings.LastIndex(text, ":")
+	if lastColon > 0 && strings.Count(text, ":") == 1 {
+		host := strings.TrimSpace(text[:lastColon])
+		portText := strings.TrimSpace(text[lastColon+1:])
+		if host != "" {
+			if p, err := strconv.Atoi(portText); err == nil && p > 0 {
+				return host, p, true
+			}
+			return host, defaultPort, true
+		}
+	}
+
+	return text, defaultPort, true
+}
+
+func normalizeMySQLAddress(host string, port int) string {
+	h := strings.TrimSpace(host)
+	if h == "" {
+		h = "localhost"
+	}
+	p := port
+	if p <= 0 {
+		p = defaultMySQLPort
+	}
+	return fmt.Sprintf("%s:%d", h, p)
+}
+
+func applyMySQLURI(config connection.ConnectionConfig) connection.ConnectionConfig {
+	uriText := strings.TrimSpace(config.URI)
+	if uriText == "" {
+		return config
+	}
+	if !strings.HasPrefix(strings.ToLower(uriText), "mysql://") {
+		return config
+	}
+
+	parsed, err := url.Parse(uriText)
+	if err != nil {
+		return config
+	}
+
+	if parsed.User != nil {
+		if config.User == "" {
+			config.User = parsed.User.Username()
+		}
+		if pass, ok := parsed.User.Password(); ok && config.Password == "" {
+			config.Password = pass
+		}
+	}
+
+	if dbName := strings.TrimPrefix(parsed.Path, "/"); dbName != "" && config.Database == "" {
+		config.Database = dbName
+	}
+
+	defaultPort := config.Port
+	if defaultPort <= 0 {
+		defaultPort = defaultMySQLPort
+	}
+
+	hostsFromURI := make([]string, 0, 4)
+	hostText := strings.TrimSpace(parsed.Host)
+	if hostText != "" {
+		for _, entry := range strings.Split(hostText, ",") {
+			host, port, ok := parseHostPortWithDefault(entry, defaultPort)
+			if !ok {
+				continue
+			}
+			hostsFromURI = append(hostsFromURI, normalizeMySQLAddress(host, port))
+		}
+	}
+
+	if len(config.Hosts) == 0 && len(hostsFromURI) > 0 {
+		config.Hosts = hostsFromURI
+	}
+	if strings.TrimSpace(config.Host) == "" && len(hostsFromURI) > 0 {
+		host, port, ok := parseHostPortWithDefault(hostsFromURI[0], defaultPort)
+		if ok {
+			config.Host = host
+			config.Port = port
+		}
+	}
+
+	if config.Topology == "" {
+		topology := strings.TrimSpace(parsed.Query().Get("topology"))
+		if topology != "" {
+			config.Topology = strings.ToLower(topology)
+		}
+	}
+
+	return config
+}
+
+func collectMySQLAddresses(config connection.ConnectionConfig) []string {
+	defaultPort := config.Port
+	if defaultPort <= 0 {
+		defaultPort = defaultMySQLPort
+	}
+
+	candidates := make([]string, 0, len(config.Hosts)+1)
+	if len(config.Hosts) > 0 {
+		candidates = append(candidates, config.Hosts...)
+	} else {
+		candidates = append(candidates, normalizeMySQLAddress(config.Host, defaultPort))
+	}
+
+	result := make([]string, 0, len(candidates))
+	seen := make(map[string]struct{}, len(candidates))
+	for _, entry := range candidates {
+		host, port, ok := parseHostPortWithDefault(entry, defaultPort)
+		if !ok {
+			continue
+		}
+		normalized := normalizeMySQLAddress(host, port)
+		if _, exists := seen[normalized]; exists {
+			continue
+		}
+		seen[normalized] = struct{}{}
+		result = append(result, normalized)
+	}
+	return result
+}
+
 func (m *MySQLDB) getDSN(config connection.ConnectionConfig) string {
 	database := config.Database
 	protocol := "tcp"
-	address := fmt.Sprintf("%s:%d", config.Host, config.Port)
+	address := normalizeMySQLAddress(config.Host, config.Port)
 
 	if config.UseSSH {
 		netName, err := ssh.RegisterSSHNetwork(config.SSH)
 		if err == nil {
 			protocol = netName
-			address = fmt.Sprintf("%s:%d", config.Host, config.Port)
+			address = normalizeMySQLAddress(config.Host, config.Port)
 		} else {
 			logger.Warnf("注册 SSH 网络失败，将尝试直连：地址=%s:%d 用户=%s，原因：%v", config.Host, config.Port, config.User, err)
 		}
@@ -41,20 +188,67 @@ func (m *MySQLDB) getDSN(config connection.ConnectionConfig) string {
 		config.User, config.Password, protocol, address, database, timeout)
 }
 
-func (m *MySQLDB) Connect(config connection.ConnectionConfig) error {
-	dsn := m.getDSN(config)
-	db, err := sql.Open("mysql", dsn)
-	if err != nil {
-		return fmt.Errorf("打开数据库连接失败：%w", err)
-	}
-	m.conn = db
-	m.pingTimeout = getConnectTimeout(config)
+func resolveMySQLCredential(config connection.ConnectionConfig, addressIndex int) (string, string) {
+	primaryUser := strings.TrimSpace(config.User)
+	primaryPassword := config.Password
+	replicaUser := strings.TrimSpace(config.MySQLReplicaUser)
+	replicaPassword := config.MySQLReplicaPassword
 
-	// Force verification
-	if err := m.Ping(); err != nil {
-		return fmt.Errorf("连接建立后验证失败：%w", err)
+	if addressIndex > 0 && replicaUser != "" {
+		return replicaUser, replicaPassword
 	}
-	return nil
+
+	if primaryUser == "" && replicaUser != "" {
+		return replicaUser, replicaPassword
+	}
+
+	return config.User, primaryPassword
+}
+
+func (m *MySQLDB) Connect(config connection.ConnectionConfig) error {
+	runConfig := applyMySQLURI(config)
+	addresses := collectMySQLAddresses(runConfig)
+	if len(addresses) == 0 {
+		return fmt.Errorf("连接建立后验证失败：未找到可用的 MySQL 地址")
+	}
+
+	var errorDetails []string
+	for index, address := range addresses {
+		candidateConfig := runConfig
+		host, port, ok := parseHostPortWithDefault(address, defaultMySQLPort)
+		if !ok {
+			continue
+		}
+		candidateConfig.Host = host
+		candidateConfig.Port = port
+		candidateConfig.User, candidateConfig.Password = resolveMySQLCredential(runConfig, index)
+
+		dsn := m.getDSN(candidateConfig)
+		db, err := sql.Open("mysql", dsn)
+		if err != nil {
+			errorDetails = append(errorDetails, fmt.Sprintf("%s 打开失败: %v", address, err))
+			continue
+		}
+
+		timeout := getConnectTimeout(candidateConfig)
+		ctx, cancel := utils.ContextWithTimeout(timeout)
+		pingErr := db.PingContext(ctx)
+		cancel()
+		if pingErr != nil {
+			_ = db.Close()
+			errorDetails = append(errorDetails, fmt.Sprintf("%s 验证失败: %v", address, pingErr))
+			continue
+		}
+
+		m.conn = db
+		m.pingTimeout = timeout
+		return nil
+	}
+
+	if len(errorDetails) == 0 {
+		return fmt.Errorf("连接建立后验证失败：未找到可用的 MySQL 地址")
+	}
+	return fmt.Errorf("连接建立后验证失败：%s", strings.Join(errorDetails, "；"))
 }
 
 func (m *MySQLDB) Close() error {

internal/db/sphinx_impl.go

@@ -0,0 +1,103 @@
+package db
+
+import (
+	"strings"
+
+	"GoNavi-Wails/internal/connection"
+)
+
+const sphinxDefaultDatabaseName = "default"
+
+// SphinxDB 复用 MySQL 协议实现，并在数据库列表不可用时提供兜底。
+type SphinxDB struct {
+	MySQLDB
+	fallbackDatabase string
+}
+
+func isSphinxUnsupportedFeatureError(err error) bool {
+	if err == nil {
+		return false
+	}
+	text := strings.ToLower(strings.TrimSpace(err.Error()))
+	if text == "" {
+		return false
+	}
+	keywords := []string{
+		"not supported",
+		"unsupported",
+		"syntax error",
+		"unknown table",
+		"unknown column",
+		"doesn't exist",
+	}
+	for _, keyword := range keywords {
+		if strings.Contains(text, keyword) {
+			return true
+		}
+	}
+	return false
+}
+
+func (s *SphinxDB) Connect(config connection.ConnectionConfig) error {
+	runConfig := applyMySQLURI(config)
+	s.fallbackDatabase = strings.TrimSpace(runConfig.Database)
+	return s.MySQLDB.Connect(config)
+}
+
+func (s *SphinxDB) resolveDatabaseName(dbName string) string {
+	name := strings.TrimSpace(dbName)
+	if name == "" {
+		return s.fallbackDatabase
+	}
+	if strings.EqualFold(name, sphinxDefaultDatabaseName) && s.fallbackDatabase == "" {
+		return ""
+	}
+	return name
+}
+
+func (s *SphinxDB) GetDatabases() ([]string, error) {
+	dbs, err := s.MySQLDB.GetDatabases()
+	if err == nil && len(dbs) > 0 {
+		return dbs, nil
+	}
+	if s.fallbackDatabase != "" {
+		return []string{s.fallbackDatabase}, nil
+	}
+	return []string{sphinxDefaultDatabaseName}, nil
+}
+
+func (s *SphinxDB) GetTables(dbName string) ([]string, error) {
+	return s.MySQLDB.GetTables(s.resolveDatabaseName(dbName))
+}
+
+func (s *SphinxDB) GetCreateStatement(dbName, tableName string) (string, error) {
+	return s.MySQLDB.GetCreateStatement(s.resolveDatabaseName(dbName), tableName)
+}
+
+func (s *SphinxDB) GetColumns(dbName, tableName string) ([]connection.ColumnDefinition, error) {
+	return s.MySQLDB.GetColumns(s.resolveDatabaseName(dbName), tableName)
+}
+
+func (s *SphinxDB) GetAllColumns(dbName string) ([]connection.ColumnDefinitionWithTable, error) {
+	return s.MySQLDB.GetAllColumns(s.resolveDatabaseName(dbName))
+}
+
+func (s *SphinxDB) GetIndexes(dbName, tableName string) ([]connection.IndexDefinition, error) {
+	return s.MySQLDB.GetIndexes(s.resolveDatabaseName(dbName), tableName)
+}
+
+func (s *SphinxDB) GetForeignKeys(dbName, tableName string) ([]connection.ForeignKeyDefinition, error) {
+	fks, err := s.MySQLDB.GetForeignKeys(s.resolveDatabaseName(dbName), tableName)
+	if err != nil && isSphinxUnsupportedFeatureError(err) {
+		return []connection.ForeignKeyDefinition{}, nil
+	}
+	return fks, err
+}
+
+func (s *SphinxDB) GetTriggers(dbName, tableName string) ([]connection.TriggerDefinition, error) {
+	triggers, err := s.MySQLDB.GetTriggers(s.resolveDatabaseName(dbName), tableName)
+	if err != nil && isSphinxUnsupportedFeatureError(err) {
+		return []connection.TriggerDefinition{}, nil
+	}
+	return triggers, err
+}

internal/sync/sql_helpers.go

@@ -22,7 +22,7 @@ func quoteIdentByType(dbType string, ident string) string {
 	}
 
 	switch dbType {
-	case "mysql", "mariadb":
+	case "mysql", "mariadb", "sphinx":
 		return "`" + strings.ReplaceAll(ident, "`", "``") + "`"
 	case "sqlserver":
 		escaped := strings.ReplaceAll(ident, "]", "]]")
@@ -100,7 +100,7 @@ func qualifiedNameForQuery(dbType string, schema string, table string, original
 			return raw
 		}
 		return s + "." + table
-	case "mysql", "mariadb":
+	case "mysql", "mariadb", "sphinx":
 		s := strings.TrimSpace(schema)
 		if s == "" || table == "" {
 			return table

third_party/highgo-pq/.gitignore

@@ -0,0 +1,6 @@
+.db
+*.test
+*~
+*.swp
+.idea
+.vscode

third_party/highgo-pq/LICENSE.md

@@ -0,0 +1,8 @@
+Copyright (c) 2011-2013, 'pq' Contributors
+Portions Copyright (C) 2011 Blake Mizerany
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

third_party/highgo-pq/README.md

@@ -0,0 +1,36 @@
+# pq - A pure Go postgres driver for Go's database/sql package
+
+[![GoDoc](https://godoc.org/github.com/lib/pq?status.svg)](https://pkg.go.dev/github.com/lib/pq?tab=doc)
+
+## Install
+
+	go get github.com/lib/pq
+
+## Features
+
+* SSL
+* Handles bad connections for `database/sql`
+* Scan `time.Time` correctly (i.e. `timestamp[tz]`, `time[tz]`, `date`)
+* Scan binary blobs correctly (i.e. `bytea`)
+* Package for `hstore` support
+* COPY FROM support
+* pq.ParseURL for converting urls to connection strings for sql.Open.
+* Many libpq compatible environment variables
+* Unix socket support
+* Notifications: `LISTEN`/`NOTIFY`
+* pgpass support
+* GSS (Kerberos) auth
+
+## Tests
+
+`go test` is used for testing.  See [TESTS.md](TESTS.md) for more details.
+
+## Status
+
+This package is currently in maintenance mode, which means:
+1.   It generally does not accept new features.
+2.   It does accept bug fixes and version compatability changes provided by the community.
+3.   Maintainers usually do not resolve reported issues.
+4.   Community members are encouraged to help each other with reported issues.
+
+For users that require new features or reliable resolution of reported bugs, we recommend using [pgx](https://github.com/jackc/pgx) which is under active development.

third_party/highgo-pq/TESTS.md

@@ -0,0 +1,33 @@
+# Tests
+
+## Running Tests
+
+`go test` is used for testing. A running PostgreSQL
+server is required, with the ability to log in. The
+database to connect to test with is "pqgotest," on
+"localhost" but these can be overridden using [environment
+variables](https://www.postgresql.org/docs/9.3/static/libpq-envars.html).
+
+Example:
+
+	PGHOST=/run/postgresql go test
+
+## Benchmarks
+
+A benchmark suite can be run as part of the tests:
+
+	go test -bench .
+
+## Example setup (Docker)
+
+Run a postgres container:
+
+```
+docker run --expose 5432:5432 postgres
+```
+
+Run tests:
+
+```
+PGHOST=localhost PGPORT=5432 PGUSER=postgres PGSSLMODE=disable PGDATABASE=postgres go test
+```

third_party/highgo-pq/array.go

@@ -0,0 +1,895 @@
+package pq
+
+import (
+	"bytes"
+	"database/sql"
+	"database/sql/driver"
+	"encoding/hex"
+	"fmt"
+	"reflect"
+	"strconv"
+	"strings"
+)
+
+var typeByteSlice = reflect.TypeOf([]byte{})
+var typeDriverValuer = reflect.TypeOf((*driver.Valuer)(nil)).Elem()
+var typeSQLScanner = reflect.TypeOf((*sql.Scanner)(nil)).Elem()
+
+// Array returns the optimal driver.Valuer and sql.Scanner for an array or
+// slice of any dimension.
+//
+// For example:
+//  db.Query(`SELECT * FROM t WHERE id = ANY($1)`, pq.Array([]int{235, 401}))
+//
+//  var x []sql.NullInt64
+//  db.QueryRow(`SELECT ARRAY[235, 401]`).Scan(pq.Array(&x))
+//
+// Scanning multi-dimensional arrays is not supported.  Arrays where the lower
+// bound is not one (such as `[0:0]={1}') are not supported.
+func Array(a interface{}) interface {
+	driver.Valuer
+	sql.Scanner
+} {
+	switch a := a.(type) {
+	case []bool:
+		return (*BoolArray)(&a)
+	case []float64:
+		return (*Float64Array)(&a)
+	case []float32:
+		return (*Float32Array)(&a)
+	case []int64:
+		return (*Int64Array)(&a)
+	case []int32:
+		return (*Int32Array)(&a)
+	case []string:
+		return (*StringArray)(&a)
+	case [][]byte:
+		return (*ByteaArray)(&a)
+
+	case *[]bool:
+		return (*BoolArray)(a)
+	case *[]float64:
+		return (*Float64Array)(a)
+	case *[]float32:
+		return (*Float32Array)(a)
+	case *[]int64:
+		return (*Int64Array)(a)
+	case *[]int32:
+		return (*Int32Array)(a)
+	case *[]string:
+		return (*StringArray)(a)
+	case *[][]byte:
+		return (*ByteaArray)(a)
+	}
+
+	return GenericArray{a}
+}
+
+// ArrayDelimiter may be optionally implemented by driver.Valuer or sql.Scanner
+// to override the array delimiter used by GenericArray.
+type ArrayDelimiter interface {
+	// ArrayDelimiter returns the delimiter character(s) for this element's type.
+	ArrayDelimiter() string
+}
+
+// BoolArray represents a one-dimensional array of the PostgreSQL boolean type.
+type BoolArray []bool
+
+// Scan implements the sql.Scanner interface.
+func (a *BoolArray) Scan(src interface{}) error {
+	switch src := src.(type) {
+	case []byte:
+		return a.scanBytes(src)
+	case string:
+		return a.scanBytes([]byte(src))
+	case nil:
+		*a = nil
+		return nil
+	}
+
+	return fmt.Errorf("pq: cannot convert %T to BoolArray", src)
+}
+
+func (a *BoolArray) scanBytes(src []byte) error {
+	elems, err := scanLinearArray(src, []byte{','}, "BoolArray")
+	if err != nil {
+		return err
+	}
+	if *a != nil && len(elems) == 0 {
+		*a = (*a)[:0]
+	} else {
+		b := make(BoolArray, len(elems))
+		for i, v := range elems {
+			if len(v) != 1 {
+				return fmt.Errorf("pq: could not parse boolean array index %d: invalid boolean %q", i, v)
+			}
+			switch v[0] {
+			case 't':
+				b[i] = true
+			case 'f':
+				b[i] = false
+			default:
+				return fmt.Errorf("pq: could not parse boolean array index %d: invalid boolean %q", i, v)
+			}
+		}
+		*a = b
+	}
+	return nil
+}
+
+// Value implements the driver.Valuer interface.
+func (a BoolArray) Value() (driver.Value, error) {
+	if a == nil {
+		return nil, nil
+	}
+
+	if n := len(a); n > 0 {
+		// There will be exactly two curly brackets, N bytes of values,
+		// and N-1 bytes of delimiters.
+		b := make([]byte, 1+2*n)
+
+		for i := 0; i < n; i++ {
+			b[2*i] = ','
+			if a[i] {
+				b[1+2*i] = 't'
+			} else {
+				b[1+2*i] = 'f'
+			}
+		}
+
+		b[0] = '{'
+		b[2*n] = '}'
+
+		return string(b), nil
+	}
+
+	return "{}", nil
+}
+
+// ByteaArray represents a one-dimensional array of the PostgreSQL bytea type.
+type ByteaArray [][]byte
+
+// Scan implements the sql.Scanner interface.
+func (a *ByteaArray) Scan(src interface{}) error {
+	switch src := src.(type) {
+	case []byte:
+		return a.scanBytes(src)
+	case string:
+		return a.scanBytes([]byte(src))
+	case nil:
+		*a = nil
+		return nil
+	}
+
+	return fmt.Errorf("pq: cannot convert %T to ByteaArray", src)
+}
+
+func (a *ByteaArray) scanBytes(src []byte) error {
+	elems, err := scanLinearArray(src, []byte{','}, "ByteaArray")
+	if err != nil {
+		return err
+	}
+	if *a != nil && len(elems) == 0 {
+		*a = (*a)[:0]
+	} else {
+		b := make(ByteaArray, len(elems))
+		for i, v := range elems {
+			b[i], err = parseBytea(v)
+			if err != nil {
+				return fmt.Errorf("could not parse bytea array index %d: %s", i, err.Error())
+			}
+		}
+		*a = b
+	}
+	return nil
+}
+
+// Value implements the driver.Valuer interface. It uses the "hex" format which
+// is only supported on PostgreSQL 9.0 or newer.
+func (a ByteaArray) Value() (driver.Value, error) {
+	if a == nil {
+		return nil, nil
+	}
+
+	if n := len(a); n > 0 {
+		// There will be at least two curly brackets, 2*N bytes of quotes,
+		// 3*N bytes of hex formatting, and N-1 bytes of delimiters.
+		size := 1 + 6*n
+		for _, x := range a {
+			size += hex.EncodedLen(len(x))
+		}
+
+		b := make([]byte, size)
+
+		for i, s := 0, b; i < n; i++ {
+			o := copy(s, `,"\\x`)
+			o += hex.Encode(s[o:], a[i])
+			s[o] = '"'
+			s = s[o+1:]
+		}
+
+		b[0] = '{'
+		b[size-1] = '}'
+
+		return string(b), nil
+	}
+
+	return "{}", nil
+}
+
+// Float64Array represents a one-dimensional array of the PostgreSQL double
+// precision type.
+type Float64Array []float64
+
+// Scan implements the sql.Scanner interface.
+func (a *Float64Array) Scan(src interface{}) error {
+	switch src := src.(type) {
+	case []byte:
+		return a.scanBytes(src)
+	case string:
+		return a.scanBytes([]byte(src))
+	case nil:
+		*a = nil
+		return nil
+	}
+
+	return fmt.Errorf("pq: cannot convert %T to Float64Array", src)
+}
+
+func (a *Float64Array) scanBytes(src []byte) error {
+	elems, err := scanLinearArray(src, []byte{','}, "Float64Array")
+	if err != nil {
+		return err
+	}
+	if *a != nil && len(elems) == 0 {
+		*a = (*a)[:0]
+	} else {
+		b := make(Float64Array, len(elems))
+		for i, v := range elems {
+			if b[i], err = strconv.ParseFloat(string(v), 64); err != nil {
+				return fmt.Errorf("pq: parsing array element index %d: %v", i, err)
+			}
+		}
+		*a = b
+	}
+	return nil
+}
+
+// Value implements the driver.Valuer interface.
+func (a Float64Array) Value() (driver.Value, error) {
+	if a == nil {
+		return nil, nil
+	}
+
+	if n := len(a); n > 0 {
+		// There will be at least two curly brackets, N bytes of values,
+		// and N-1 bytes of delimiters.
+		b := make([]byte, 1, 1+2*n)
+		b[0] = '{'
+
+		b = strconv.AppendFloat(b, a[0], 'f', -1, 64)
+		for i := 1; i < n; i++ {
+			b = append(b, ',')
+			b = strconv.AppendFloat(b, a[i], 'f', -1, 64)
+		}
+
+		return string(append(b, '}')), nil
+	}
+
+	return "{}", nil
+}
+
+// Float32Array represents a one-dimensional array of the PostgreSQL double
+// precision type.
+type Float32Array []float32
+
+// Scan implements the sql.Scanner interface.
+func (a *Float32Array) Scan(src interface{}) error {
+	switch src := src.(type) {
+	case []byte:
+		return a.scanBytes(src)
+	case string:
+		return a.scanBytes([]byte(src))
+	case nil:
+		*a = nil
+		return nil
+	}
+
+	return fmt.Errorf("pq: cannot convert %T to Float32Array", src)
+}
+
+func (a *Float32Array) scanBytes(src []byte) error {
+	elems, err := scanLinearArray(src, []byte{','}, "Float32Array")
+	if err != nil {
+		return err
+	}
+	if *a != nil && len(elems) == 0 {
+		*a = (*a)[:0]
+	} else {
+		b := make(Float32Array, len(elems))
+		for i, v := range elems {
+			var x float64
+			if x, err = strconv.ParseFloat(string(v), 32); err != nil {
+				return fmt.Errorf("pq: parsing array element index %d: %v", i, err)
+			}
+			b[i] = float32(x)
+		}
+		*a = b
+	}
+	return nil
+}
+
+// Value implements the driver.Valuer interface.
+func (a Float32Array) Value() (driver.Value, error) {
+	if a == nil {
+		return nil, nil
+	}
+
+	if n := len(a); n > 0 {
+		// There will be at least two curly brackets, N bytes of values,
+		// and N-1 bytes of delimiters.
+		b := make([]byte, 1, 1+2*n)
+		b[0] = '{'
+
+		b = strconv.AppendFloat(b, float64(a[0]), 'f', -1, 32)
+		for i := 1; i < n; i++ {
+			b = append(b, ',')
+			b = strconv.AppendFloat(b, float64(a[i]), 'f', -1, 32)
+		}
+
+		return string(append(b, '}')), nil
+	}
+
+	return "{}", nil
+}
+
+// GenericArray implements the driver.Valuer and sql.Scanner interfaces for
+// an array or slice of any dimension.
+type GenericArray struct{ A interface{} }
+
+func (GenericArray) evaluateDestination(rt reflect.Type) (reflect.Type, func([]byte, reflect.Value) error, string) {
+	var assign func([]byte, reflect.Value) error
+	var del = ","
+
+	// TODO calculate the assign function for other types
+	// TODO repeat this section on the element type of arrays or slices (multidimensional)
+	{
+		if reflect.PtrTo(rt).Implements(typeSQLScanner) {
+			// dest is always addressable because it is an element of a slice.
+			assign = func(src []byte, dest reflect.Value) (err error) {
+				ss := dest.Addr().Interface().(sql.Scanner)
+				if src == nil {
+					err = ss.Scan(nil)
+				} else {
+					err = ss.Scan(src)
+				}
+				return
+			}
+			goto FoundType
+		}
+
+		assign = func([]byte, reflect.Value) error {
+			return fmt.Errorf("pq: scanning to %s is not implemented; only sql.Scanner", rt)
+		}
+	}
+
+FoundType:
+
+	if ad, ok := reflect.Zero(rt).Interface().(ArrayDelimiter); ok {
+		del = ad.ArrayDelimiter()
+	}
+
+	return rt, assign, del
+}
+
+// Scan implements the sql.Scanner interface.
+func (a GenericArray) Scan(src interface{}) error {
+	dpv := reflect.ValueOf(a.A)
+	switch {
+	case dpv.Kind() != reflect.Ptr:
+		return fmt.Errorf("pq: destination %T is not a pointer to array or slice", a.A)
+	case dpv.IsNil():
+		return fmt.Errorf("pq: destination %T is nil", a.A)
+	}
+
+	dv := dpv.Elem()
+	switch dv.Kind() {
+	case reflect.Slice:
+	case reflect.Array:
+	default:
+		return fmt.Errorf("pq: destination %T is not a pointer to array or slice", a.A)
+	}
+
+	switch src := src.(type) {
+	case []byte:
+		return a.scanBytes(src, dv)
+	case string:
+		return a.scanBytes([]byte(src), dv)
+	case nil:
+		if dv.Kind() == reflect.Slice {
+			dv.Set(reflect.Zero(dv.Type()))
+			return nil
+		}
+	}
+
+	return fmt.Errorf("pq: cannot convert %T to %s", src, dv.Type())
+}
+
+func (a GenericArray) scanBytes(src []byte, dv reflect.Value) error {
+	dtype, assign, del := a.evaluateDestination(dv.Type().Elem())
+	dims, elems, err := parseArray(src, []byte(del))
+	if err != nil {
+		return err
+	}
+
+	// TODO allow multidimensional
+
+	if len(dims) > 1 {
+		return fmt.Errorf("pq: scanning from multidimensional ARRAY%s is not implemented",
+			strings.Replace(fmt.Sprint(dims), " ", "][", -1))
+	}
+
+	// Treat a zero-dimensional array like an array with a single dimension of zero.
+	if len(dims) == 0 {
+		dims = append(dims, 0)
+	}
+
+	for i, rt := 0, dv.Type(); i < len(dims); i, rt = i+1, rt.Elem() {
+		switch rt.Kind() {
+		case reflect.Slice:
+		case reflect.Array:
+			if rt.Len() != dims[i] {
+				return fmt.Errorf("pq: cannot convert ARRAY%s to %s",
+					strings.Replace(fmt.Sprint(dims), " ", "][", -1), dv.Type())
+			}
+		default:
+			// TODO handle multidimensional
+		}
+	}
+
+	values := reflect.MakeSlice(reflect.SliceOf(dtype), len(elems), len(elems))
+	for i, e := range elems {
+		if err := assign(e, values.Index(i)); err != nil {
+			return fmt.Errorf("pq: parsing array element index %d: %v", i, err)
+		}
+	}
+
+	// TODO handle multidimensional
+
+	switch dv.Kind() {
+	case reflect.Slice:
+		dv.Set(values.Slice(0, dims[0]))
+	case reflect.Array:
+		for i := 0; i < dims[0]; i++ {
+			dv.Index(i).Set(values.Index(i))
+		}
+	}
+
+	return nil
+}
+
+// Value implements the driver.Valuer interface.
+func (a GenericArray) Value() (driver.Value, error) {
+	if a.A == nil {
+		return nil, nil
+	}
+
+	rv := reflect.ValueOf(a.A)
+
+	switch rv.Kind() {
+	case reflect.Slice:
+		if rv.IsNil() {
+			return nil, nil
+		}
+	case reflect.Array:
+	default:
+		return nil, fmt.Errorf("pq: Unable to convert %T to array", a.A)
+	}
+
+	if n := rv.Len(); n > 0 {
+		// There will be at least two curly brackets, N bytes of values,
+		// and N-1 bytes of delimiters.
+		b := make([]byte, 0, 1+2*n)
+
+		b, _, err := appendArray(b, rv, n)
+		return string(b), err
+	}
+
+	return "{}", nil
+}
+
+// Int64Array represents a one-dimensional array of the PostgreSQL integer types.
+type Int64Array []int64
+
+// Scan implements the sql.Scanner interface.
+func (a *Int64Array) Scan(src interface{}) error {
+	switch src := src.(type) {
+	case []byte:
+		return a.scanBytes(src)
+	case string:
+		return a.scanBytes([]byte(src))
+	case nil:
+		*a = nil
+		return nil
+	}
+
+	return fmt.Errorf("pq: cannot convert %T to Int64Array", src)
+}
+
+func (a *Int64Array) scanBytes(src []byte) error {
+	elems, err := scanLinearArray(src, []byte{','}, "Int64Array")
+	if err != nil {
+		return err
+	}
+	if *a != nil && len(elems) == 0 {
+		*a = (*a)[:0]
+	} else {
+		b := make(Int64Array, len(elems))
+		for i, v := range elems {
+			if b[i], err = strconv.ParseInt(string(v), 10, 64); err != nil {
+				return fmt.Errorf("pq: parsing array element index %d: %v", i, err)
+			}
+		}
+		*a = b
+	}
+	return nil
+}
+
+// Value implements the driver.Valuer interface.
+func (a Int64Array) Value() (driver.Value, error) {
+	if a == nil {
+		return nil, nil
+	}
+
+	if n := len(a); n > 0 {
+		// There will be at least two curly brackets, N bytes of values,
+		// and N-1 bytes of delimiters.
+		b := make([]byte, 1, 1+2*n)
+		b[0] = '{'
+
+		b = strconv.AppendInt(b, a[0], 10)
+		for i := 1; i < n; i++ {
+			b = append(b, ',')
+			b = strconv.AppendInt(b, a[i], 10)
+		}
+
+		return string(append(b, '}')), nil
+	}
+
+	return "{}", nil
+}
+
+// Int32Array represents a one-dimensional array of the PostgreSQL integer types.
+type Int32Array []int32
+
+// Scan implements the sql.Scanner interface.
+func (a *Int32Array) Scan(src interface{}) error {
+	switch src := src.(type) {
+	case []byte:
+		return a.scanBytes(src)
+	case string:
+		return a.scanBytes([]byte(src))
+	case nil:
+		*a = nil
+		return nil
+	}
+
+	return fmt.Errorf("pq: cannot convert %T to Int32Array", src)
+}
+
+func (a *Int32Array) scanBytes(src []byte) error {
+	elems, err := scanLinearArray(src, []byte{','}, "Int32Array")
+	if err != nil {
+		return err
+	}
+	if *a != nil && len(elems) == 0 {
+		*a = (*a)[:0]
+	} else {
+		b := make(Int32Array, len(elems))
+		for i, v := range elems {
+			x, err := strconv.ParseInt(string(v), 10, 32)
+			if err != nil {
+				return fmt.Errorf("pq: parsing array element index %d: %v", i, err)
+			}
+			b[i] = int32(x)
+		}
+		*a = b
+	}
+	return nil
+}
+
+// Value implements the driver.Valuer interface.
+func (a Int32Array) Value() (driver.Value, error) {
+	if a == nil {
+		return nil, nil
+	}
+
+	if n := len(a); n > 0 {
+		// There will be at least two curly brackets, N bytes of values,
+		// and N-1 bytes of delimiters.
+		b := make([]byte, 1, 1+2*n)
+		b[0] = '{'
+
+		b = strconv.AppendInt(b, int64(a[0]), 10)
+		for i := 1; i < n; i++ {
+			b = append(b, ',')
+			b = strconv.AppendInt(b, int64(a[i]), 10)
+		}
+
+		return string(append(b, '}')), nil
+	}
+
+	return "{}", nil
+}
+
+// StringArray represents a one-dimensional array of the PostgreSQL character types.
+type StringArray []string
+
+// Scan implements the sql.Scanner interface.
+func (a *StringArray) Scan(src interface{}) error {
+	switch src := src.(type) {
+	case []byte:
+		return a.scanBytes(src)
+	case string:
+		return a.scanBytes([]byte(src))
+	case nil:
+		*a = nil
+		return nil
+	}
+
+	return fmt.Errorf("pq: cannot convert %T to StringArray", src)
+}
+
+func (a *StringArray) scanBytes(src []byte) error {
+	elems, err := scanLinearArray(src, []byte{','}, "StringArray")
+	if err != nil {
+		return err
+	}
+	if *a != nil && len(elems) == 0 {
+		*a = (*a)[:0]
+	} else {
+		b := make(StringArray, len(elems))
+		for i, v := range elems {
+			if b[i] = string(v); v == nil {
+				return fmt.Errorf("pq: parsing array element index %d: cannot convert nil to string", i)
+			}
+		}
+		*a = b
+	}
+	return nil
+}
+
+// Value implements the driver.Valuer interface.
+func (a StringArray) Value() (driver.Value, error) {
+	if a == nil {
+		return nil, nil
+	}
+
+	if n := len(a); n > 0 {
+		// There will be at least two curly brackets, 2*N bytes of quotes,
+		// and N-1 bytes of delimiters.
+		b := make([]byte, 1, 1+3*n)
+		b[0] = '{'
+
+		b = appendArrayQuotedBytes(b, []byte(a[0]))
+		for i := 1; i < n; i++ {
+			b = append(b, ',')
+			b = appendArrayQuotedBytes(b, []byte(a[i]))
+		}
+
+		return string(append(b, '}')), nil
+	}
+
+	return "{}", nil
+}
+
+// appendArray appends rv to the buffer, returning the extended buffer and
+// the delimiter used between elements.
+//
+// It panics when n <= 0 or rv's Kind is not reflect.Array nor reflect.Slice.
+func appendArray(b []byte, rv reflect.Value, n int) ([]byte, string, error) {
+	var del string
+	var err error
+
+	b = append(b, '{')
+
+	if b, del, err = appendArrayElement(b, rv.Index(0)); err != nil {
+		return b, del, err
+	}
+
+	for i := 1; i < n; i++ {
+		b = append(b, del...)
+		if b, del, err = appendArrayElement(b, rv.Index(i)); err != nil {
+			return b, del, err
+		}
+	}
+
+	return append(b, '}'), del, nil
+}
+
+// appendArrayElement appends rv to the buffer, returning the extended buffer
+// and the delimiter to use before the next element.
+//
+// When rv's Kind is neither reflect.Array nor reflect.Slice, it is converted
+// using driver.DefaultParameterConverter and the resulting []byte or string
+// is double-quoted.
+//
+// See http://www.postgresql.org/docs/current/static/arrays.html#ARRAYS-IO
+func appendArrayElement(b []byte, rv reflect.Value) ([]byte, string, error) {
+	if k := rv.Kind(); k == reflect.Array || k == reflect.Slice {
+		if t := rv.Type(); t != typeByteSlice && !t.Implements(typeDriverValuer) {
+			if n := rv.Len(); n > 0 {
+				return appendArray(b, rv, n)
+			}
+
+			return b, "", nil
+		}
+	}
+
+	var del = ","
+	var err error
+	var iv interface{} = rv.Interface()
+
+	if ad, ok := iv.(ArrayDelimiter); ok {
+		del = ad.ArrayDelimiter()
+	}
+
+	if iv, err = driver.DefaultParameterConverter.ConvertValue(iv); err != nil {
+		return b, del, err
+	}
+
+	switch v := iv.(type) {
+	case nil:
+		return append(b, "NULL"...), del, nil
+	case []byte:
+		return appendArrayQuotedBytes(b, v), del, nil
+	case string:
+		return appendArrayQuotedBytes(b, []byte(v)), del, nil
+	}
+
+	b, err = appendValue(b, iv)
+	return b, del, err
+}
+
+func appendArrayQuotedBytes(b, v []byte) []byte {
+	b = append(b, '"')
+	for {
+		i := bytes.IndexAny(v, `"\`)
+		if i < 0 {
+			b = append(b, v...)
+			break
+		}
+		if i > 0 {
+			b = append(b, v[:i]...)
+		}
+		b = append(b, '\\', v[i])
+		v = v[i+1:]
+	}
+	return append(b, '"')
+}
+
+func appendValue(b []byte, v driver.Value) ([]byte, error) {
+	return append(b, encode(nil, v, 0)...), nil
+}
+
+// parseArray extracts the dimensions and elements of an array represented in
+// text format. Only representations emitted by the backend are supported.
+// Notably, whitespace around brackets and delimiters is significant, and NULL
+// is case-sensitive.
+//
+// See http://www.postgresql.org/docs/current/static/arrays.html#ARRAYS-IO
+func parseArray(src, del []byte) (dims []int, elems [][]byte, err error) {
+	var depth, i int
+
+	if len(src) < 1 || src[0] != '{' {
+		return nil, nil, fmt.Errorf("pq: unable to parse array; expected %q at offset %d", '{', 0)
+	}
+
+Open:
+	for i < len(src) {
+		switch src[i] {
+		case '{':
+			depth++
+			i++
+		case '}':
+			elems = make([][]byte, 0)
+			goto Close
+		default:
+			break Open
+		}
+	}
+	dims = make([]int, i)
+
+Element:
+	for i < len(src) {
+		switch src[i] {
+		case '{':
+			if depth == len(dims) {
+				break Element
+			}
+			depth++
+			dims[depth-1] = 0
+			i++
+		case '"':
+			var elem = []byte{}
+			var escape bool
+			for i++; i < len(src); i++ {
+				if escape {
+					elem = append(elem, src[i])
+					escape = false
+				} else {
+					switch src[i] {
+					default:
+						elem = append(elem, src[i])
+					case '\\':
+						escape = true
+					case '"':
+						elems = append(elems, elem)
+						i++
+						break Element
+					}
+				}
+			}
+		default:
+			for start := i; i < len(src); i++ {
+				if bytes.HasPrefix(src[i:], del) || src[i] == '}' {
+					elem := src[start:i]
+					if len(elem) == 0 {
+						return nil, nil, fmt.Errorf("pq: unable to parse array; unexpected %q at offset %d", src[i], i)
+					}
+					if bytes.Equal(elem, []byte("NULL")) {
+						elem = nil
+					}
+					elems = append(elems, elem)
+					break Element
+				}
+			}
+		}
+	}
+
+	for i < len(src) {
+		if bytes.HasPrefix(src[i:], del) && depth > 0 {
+			dims[depth-1]++
+			i += len(del)
+			goto Element
+		} else if src[i] == '}' && depth > 0 {
+			dims[depth-1]++
+			depth--
+			i++
+		} else {
+			return nil, nil, fmt.Errorf("pq: unable to parse array; unexpected %q at offset %d", src[i], i)
+		}
+	}
+
+Close:
+	for i < len(src) {
+		if src[i] == '}' && depth > 0 {
+			depth--
+			i++
+		} else {
+			return nil, nil, fmt.Errorf("pq: unable to parse array; unexpected %q at offset %d", src[i], i)
+		}
+	}
+	if depth > 0 {
+		err = fmt.Errorf("pq: unable to parse array; expected %q at offset %d", '}', i)
+	}
+	if err == nil {
+		for _, d := range dims {
+			if (len(elems) % d) != 0 {
+				err = fmt.Errorf("pq: multidimensional arrays must have elements with matching dimensions")
+			}
+		}
+	}
+	return
+}
+
+func scanLinearArray(src, del []byte, typ string) (elems [][]byte, err error) {
+	dims, elems, err := parseArray(src, del)
+	if err != nil {
+		return nil, err
+	}
+	if len(dims) > 1 {
+		return nil, fmt.Errorf("pq: cannot convert ARRAY%s to %s", strings.Replace(fmt.Sprint(dims), " ", "][", -1), typ)
+	}
+	return elems, err
+}

third_party/highgo-pq/auth/kerberos/go.mod

@@ -0,0 +1,8 @@
+module github.com/lib/pq/auth/kerberos
+
+go 1.13
+
+require (
+	github.com/alexbrainman/sspi v0.0.0-20180613141037-e580b900e9f5
+	github.com/jcmturner/gokrb5/v8 v8.2.0
+)

third_party/highgo-pq/auth/kerberos/go.sum

@@ -0,0 +1,40 @@
+github.com/alexbrainman/sspi v0.0.0-20180613141037-e580b900e9f5 h1:P5U+E4x5OkVEKQDklVPmzs71WM56RTTRqV4OrDC//Y4=
+github.com/alexbrainman/sspi v0.0.0-20180613141037-e580b900e9f5/go.mod h1:976q2ETgjT2snVCf2ZaBnyBbVoPERGjUz+0sofzEfro=
+github.com/davecgh/go-spew v1.1.0 h1:ZDRjVQ15GmhC3fiQ8ni8+OwkZQO4DARzQgrnXU1Liz8=
+github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/gorilla/securecookie v1.1.1 h1:miw7JPhV+b/lAHSXz4qd/nN9jRiAFV5FwjeKyCS8BvQ=
+github.com/gorilla/securecookie v1.1.1/go.mod h1:ra0sb63/xPlUeL+yeDciTfxMRAA+MP+HVt/4epWDjd4=
+github.com/gorilla/sessions v1.2.0 h1:S7P+1Hm5V/AT9cjEcUD5uDaQSX0OE577aCXgoaKpYbQ=
+github.com/gorilla/sessions v1.2.0/go.mod h1:dk2InVEVJ0sfLlnXv9EAgkf6ecYs/i80K/zI+bUmuGM=
+github.com/hashicorp/go-uuid v1.0.2 h1:cfejS+Tpcp13yd5nYHWDI6qVCny6wyX2Mt5SGur2IGE=
+github.com/hashicorp/go-uuid v1.0.2/go.mod h1:6SBZvOh/SIDV7/2o3Jml5SYk/TvGqwFJ/bN7x4byOro=
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+github.com/jcmturner/aescts/v2 v2.0.0/go.mod h1:AiaICIRyfYg35RUkr8yESTqvSy7csK90qZ5xfvvsoNs=
+github.com/jcmturner/dnsutils/v2 v2.0.0 h1:lltnkeZGL0wILNvrNiVCR6Ro5PGU/SeBvVO/8c/iPbo=
+github.com/jcmturner/dnsutils/v2 v2.0.0/go.mod h1:b0TnjGOvI/n42bZa+hmXL+kFJZsFT7G4t3HTlQ184QM=
+github.com/jcmturner/gofork v1.0.0 h1:J7uCkflzTEhUZ64xqKnkDxq3kzc96ajM1Gli5ktUem8=
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+gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=

third_party/highgo-pq/auth/kerberos/krb.go

@@ -0,0 +1,29 @@
+package kerberos
+
+import (
+	"net"
+	"strings"
+)
+
+/*
+ *  Find the A record associated with a hostname
+ *  In general, hostnames supplied to the driver should be
+ *  canonicalized because the KDC usually only has one
+ *  principal and not one per potential alias of a host.
+ */
+func canonicalizeHostname(host string) (string, error) {
+	canon := host
+
+	name, err := net.LookupCNAME(host)
+	if err != nil {
+		return "", err
+	}
+
+	name = strings.TrimSuffix(name, ".")
+
+	if name != "" {
+		canon = name
+	}
+
+	return canon, nil
+}

third_party/highgo-pq/auth/kerberos/krb_unix.go

@@ -0,0 +1,128 @@
+//go:build !windows
+// +build !windows
+
+package kerberos
+
+import (
+	"fmt"
+	"os"
+	"os/user"
+	"strings"
+
+	"github.com/jcmturner/gokrb5/v8/client"
+	"github.com/jcmturner/gokrb5/v8/config"
+	"github.com/jcmturner/gokrb5/v8/credentials"
+	"github.com/jcmturner/gokrb5/v8/spnego"
+)
+
+/*
+ * UNIX Kerberos support, using jcmturner's pure-go
+ * implementation
+ */
+
+// GSS implements the pq.GSS interface.
+type GSS struct {
+	cli *client.Client
+}
+
+// NewGSS creates a new GSS provider.
+func NewGSS() (*GSS, error) {
+	g := &GSS{}
+	err := g.init()
+
+	if err != nil {
+		return nil, err
+	}
+
+	return g, nil
+}
+
+func (g *GSS) init() error {
+	cfgPath, ok := os.LookupEnv("KRB5_CONFIG")
+	if !ok {
+		cfgPath = "/etc/krb5.conf"
+	}
+
+	cfg, err := config.Load(cfgPath)
+	if err != nil {
+		return err
+	}
+
+	u, err := user.Current()
+	if err != nil {
+		return err
+	}
+
+	ccpath := "/tmp/krb5cc_" + u.Uid
+
+	ccname := os.Getenv("KRB5CCNAME")
+	if strings.HasPrefix(ccname, "FILE:") {
+		ccpath = strings.SplitN(ccname, ":", 2)[1]
+	}
+
+	ccache, err := credentials.LoadCCache(ccpath)
+	if err != nil {
+		return err
+	}
+
+	cl, err := client.NewFromCCache(ccache, cfg, client.DisablePAFXFAST(true))
+	if err != nil {
+		return err
+	}
+
+	cl.Login()
+
+	g.cli = cl
+
+	return nil
+}
+
+// GetInitToken implements the GSS interface.
+func (g *GSS) GetInitToken(host string, service string) ([]byte, error) {
+
+	// Resolve the hostname down to an 'A' record, if required (usually, it is)
+	if g.cli.Config.LibDefaults.DNSCanonicalizeHostname {
+		var err error
+		host, err = canonicalizeHostname(host)
+		if err != nil {
+			return nil, err
+		}
+	}
+
+	spn := service + "/" + host
+
+	return g.GetInitTokenFromSpn(spn)
+}
+
+// GetInitTokenFromSpn implements the GSS interface.
+func (g *GSS) GetInitTokenFromSpn(spn string) ([]byte, error) {
+	s := spnego.SPNEGOClient(g.cli, spn)
+
+	st, err := s.InitSecContext()
+	if err != nil {
+		return nil, fmt.Errorf("kerberos error (InitSecContext): %s", err.Error())
+	}
+
+	b, err := st.Marshal()
+	if err != nil {
+		return nil, fmt.Errorf("kerberos error (Marshaling token): %s", err.Error())
+	}
+
+	return b, nil
+}
+
+// Continue implements the GSS interface.
+func (g *GSS) Continue(inToken []byte) (done bool, outToken []byte, err error) {
+	t := &spnego.SPNEGOToken{}
+	err = t.Unmarshal(inToken)
+	if err != nil {
+		return true, nil, fmt.Errorf("kerberos error (Unmarshaling token): %s", err.Error())
+	}
+
+	state := t.NegTokenResp.State()
+	if state != spnego.NegStateAcceptCompleted {
+		return true, nil, fmt.Errorf("kerberos: expected state 'Completed' - got %d", state)
+	}
+
+	return true, nil, nil
+}

third_party/highgo-pq/auth/kerberos/krb_windows.go

@@ -0,0 +1,67 @@
+//go:build windows
+// +build windows
+
+package kerberos
+
+import (
+	"github.com/alexbrainman/sspi"
+	"github.com/alexbrainman/sspi/negotiate"
+)
+
+// GSS implements the pq.GSS interface.
+type GSS struct {
+	creds *sspi.Credentials
+	ctx   *negotiate.ClientContext
+}
+
+// NewGSS creates a new GSS provider.
+func NewGSS() (*GSS, error) {
+	g := &GSS{}
+	err := g.init()
+
+	if err != nil {
+		return nil, err
+	}
+
+	return g, nil
+}
+
+func (g *GSS) init() error {
+	creds, err := negotiate.AcquireCurrentUserCredentials()
+	if err != nil {
+		return err
+	}
+
+	g.creds = creds
+	return nil
+}
+
+// GetInitToken implements the GSS interface.
+func (g *GSS) GetInitToken(host string, service string) ([]byte, error) {
+
+	host, err := canonicalizeHostname(host)
+	if err != nil {
+		return nil, err
+	}
+
+	spn := service + "/" + host
+
+	return g.GetInitTokenFromSpn(spn)
+}
+
+// GetInitTokenFromSpn implements the GSS interface.
+func (g *GSS) GetInitTokenFromSpn(spn string) ([]byte, error) {
+	ctx, token, err := negotiate.NewClientContext(g.creds, spn)
+	if err != nil {
+		return nil, err
+	}
+
+	g.ctx = ctx
+
+	return token, nil
+}
+
+// Continue implements the GSS interface.
+func (g *GSS) Continue(inToken []byte) (done bool, outToken []byte, err error) {
+	return g.ctx.Update(inToken)
+}

third_party/highgo-pq/bench_test.go

@@ -0,0 +1,434 @@
+package pq
+
+import (
+	"bufio"
+	"bytes"
+	"context"
+	"database/sql"
+	"database/sql/driver"
+	"io"
+	"math/rand"
+	"net"
+	"runtime"
+	"strconv"
+	"strings"
+	"sync"
+	"testing"
+	"time"
+
+	"github.com/lib/pq/oid"
+)
+
+var (
+	selectStringQuery = "SELECT '" + strings.Repeat("0123456789", 10) + "'"
+	selectSeriesQuery = "SELECT generate_series(1, 100)"
+)
+
+func BenchmarkSelectString(b *testing.B) {
+	var result string
+	benchQuery(b, selectStringQuery, &result)
+}
+
+func BenchmarkSelectSeries(b *testing.B) {
+	var result int
+	benchQuery(b, selectSeriesQuery, &result)
+}
+
+func benchQuery(b *testing.B, query string, result interface{}) {
+	b.StopTimer()
+	db := openTestConn(b)
+	defer db.Close()
+	b.StartTimer()
+
+	for i := 0; i < b.N; i++ {
+		benchQueryLoop(b, db, query, result)
+	}
+}
+
+func benchQueryLoop(b *testing.B, db *sql.DB, query string, result interface{}) {
+	rows, err := db.Query(query)
+	if err != nil {
+		b.Fatal(err)
+	}
+	defer rows.Close()
+	for rows.Next() {
+		err = rows.Scan(result)
+		if err != nil {
+			b.Fatal("failed to scan", err)
+		}
+	}
+}
+
+// reading from circularConn yields content[:prefixLen] once, followed by
+// content[prefixLen:] over and over again. It never returns EOF.
+type circularConn struct {
+	content   string
+	prefixLen int
+	pos       int
+	net.Conn  // for all other net.Conn methods that will never be called
+}
+
+func (r *circularConn) Read(b []byte) (n int, err error) {
+	n = copy(b, r.content[r.pos:])
+	r.pos += n
+	if r.pos >= len(r.content) {
+		r.pos = r.prefixLen
+	}
+	return
+}
+
+func (r *circularConn) Write(b []byte) (n int, err error) { return len(b), nil }
+
+func (r *circularConn) Close() error { return nil }
+
+func fakeConn(content string, prefixLen int) *conn {
+	c := &circularConn{content: content, prefixLen: prefixLen}
+	return &conn{buf: bufio.NewReader(c), c: c}
+}
+
+// This benchmark is meant to be the same as BenchmarkSelectString, but takes
+// out some of the factors this package can't control. The numbers are less noisy,
+// but also the costs of network communication aren't accurately represented.
+func BenchmarkMockSelectString(b *testing.B) {
+	b.StopTimer()
+	// taken from a recorded run of BenchmarkSelectString
+	// See: http://www.postgresql.org/docs/current/static/protocol-message-formats.html
+	const response = "1\x00\x00\x00\x04" +
+		"t\x00\x00\x00\x06\x00\x00" +
+		"T\x00\x00\x00!\x00\x01?column?\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\xc1\xff\xfe\xff\xff\xff\xff\x00\x00" +
+		"Z\x00\x00\x00\x05I" +
+		"2\x00\x00\x00\x04" +
+		"D\x00\x00\x00n\x00\x01\x00\x00\x00d0123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789" +
+		"C\x00\x00\x00\rSELECT 1\x00" +
+		"Z\x00\x00\x00\x05I" +
+		"3\x00\x00\x00\x04" +
+		"Z\x00\x00\x00\x05I"
+	c := fakeConn(response, 0)
+	b.StartTimer()
+
+	for i := 0; i < b.N; i++ {
+		benchMockQuery(b, c, selectStringQuery)
+	}
+}
+
+var seriesRowData = func() string {
+	var buf bytes.Buffer
+	for i := 1; i <= 100; i++ {
+		digits := byte(2)
+		if i >= 100 {
+			digits = 3
+		} else if i < 10 {
+			digits = 1
+		}
+		buf.WriteString("D\x00\x00\x00")
+		buf.WriteByte(10 + digits)
+		buf.WriteString("\x00\x01\x00\x00\x00")
+		buf.WriteByte(digits)
+		buf.WriteString(strconv.Itoa(i))
+	}
+	return buf.String()
+}()
+
+func BenchmarkMockSelectSeries(b *testing.B) {
+	b.StopTimer()
+	var response = "1\x00\x00\x00\x04" +
+		"t\x00\x00\x00\x06\x00\x00" +
+		"T\x00\x00\x00!\x00\x01?column?\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\xc1\xff\xfe\xff\xff\xff\xff\x00\x00" +
+		"Z\x00\x00\x00\x05I" +
+		"2\x00\x00\x00\x04" +
+		seriesRowData +
+		"C\x00\x00\x00\x0fSELECT 100\x00" +
+		"Z\x00\x00\x00\x05I" +
+		"3\x00\x00\x00\x04" +
+		"Z\x00\x00\x00\x05I"
+	c := fakeConn(response, 0)
+	b.StartTimer()
+
+	for i := 0; i < b.N; i++ {
+		benchMockQuery(b, c, selectSeriesQuery)
+	}
+}
+
+func benchMockQuery(b *testing.B, c *conn, query string) {
+	stmt, err := c.Prepare(query)
+	if err != nil {
+		b.Fatal(err)
+	}
+	defer stmt.Close()
+	rows, err := stmt.(driver.StmtQueryContext).QueryContext(context.Background(), nil)
+	if err != nil {
+		b.Fatal(err)
+	}
+	defer rows.Close()
+	var dest [1]driver.Value
+	for {
+		if err := rows.Next(dest[:]); err != nil {
+			if err == io.EOF {
+				break
+			}
+			b.Fatal(err)
+		}
+	}
+}
+
+func BenchmarkPreparedSelectString(b *testing.B) {
+	var result string
+	benchPreparedQuery(b, selectStringQuery, &result)
+}
+
+func BenchmarkPreparedSelectSeries(b *testing.B) {
+	var result int
+	benchPreparedQuery(b, selectSeriesQuery, &result)
+}
+
+func benchPreparedQuery(b *testing.B, query string, result interface{}) {
+	b.StopTimer()
+	db := openTestConn(b)
+	defer db.Close()
+	stmt, err := db.Prepare(query)
+	if err != nil {
+		b.Fatal(err)
+	}
+	defer stmt.Close()
+	b.StartTimer()
+
+	for i := 0; i < b.N; i++ {
+		benchPreparedQueryLoop(b, db, stmt, result)
+	}
+}
+
+func benchPreparedQueryLoop(b *testing.B, db *sql.DB, stmt *sql.Stmt, result interface{}) {
+	rows, err := stmt.Query()
+	if err != nil {
+		b.Fatal(err)
+	}
+	if !rows.Next() {
+		rows.Close()
+		b.Fatal("no rows")
+	}
+	defer rows.Close()
+	for rows.Next() {
+		err = rows.Scan(&result)
+		if err != nil {
+			b.Fatal("failed to scan")
+		}
+	}
+}
+
+// See the comment for BenchmarkMockSelectString.
+func BenchmarkMockPreparedSelectString(b *testing.B) {
+	b.StopTimer()
+	const parseResponse = "1\x00\x00\x00\x04" +
+		"t\x00\x00\x00\x06\x00\x00" +
+		"T\x00\x00\x00!\x00\x01?column?\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\xc1\xff\xfe\xff\xff\xff\xff\x00\x00" +
+		"Z\x00\x00\x00\x05I"
+	const responses = parseResponse +
+		"2\x00\x00\x00\x04" +
+		"D\x00\x00\x00n\x00\x01\x00\x00\x00d0123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789" +
+		"C\x00\x00\x00\rSELECT 1\x00" +
+		"Z\x00\x00\x00\x05I"
+	c := fakeConn(responses, len(parseResponse))
+
+	stmt, err := c.Prepare(selectStringQuery)
+	if err != nil {
+		b.Fatal(err)
+	}
+	b.StartTimer()
+
+	for i := 0; i < b.N; i++ {
+		benchPreparedMockQuery(b, c, stmt)
+	}
+}
+
+func BenchmarkMockPreparedSelectSeries(b *testing.B) {
+	b.StopTimer()
+	const parseResponse = "1\x00\x00\x00\x04" +
+		"t\x00\x00\x00\x06\x00\x00" +
+		"T\x00\x00\x00!\x00\x01?column?\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\xc1\xff\xfe\xff\xff\xff\xff\x00\x00" +
+		"Z\x00\x00\x00\x05I"
+	var responses = parseResponse +
+		"2\x00\x00\x00\x04" +
+		seriesRowData +
+		"C\x00\x00\x00\x0fSELECT 100\x00" +
+		"Z\x00\x00\x00\x05I"
+	c := fakeConn(responses, len(parseResponse))
+
+	stmt, err := c.Prepare(selectSeriesQuery)
+	if err != nil {
+		b.Fatal(err)
+	}
+	b.StartTimer()
+
+	for i := 0; i < b.N; i++ {
+		benchPreparedMockQuery(b, c, stmt)
+	}
+}
+
+func benchPreparedMockQuery(b *testing.B, c *conn, stmt driver.Stmt) {
+	rows, err := stmt.(driver.StmtQueryContext).QueryContext(context.Background(), nil)
+	if err != nil {
+		b.Fatal(err)
+	}
+	defer rows.Close()
+	var dest [1]driver.Value
+	for {
+		if err := rows.Next(dest[:]); err != nil {
+			if err == io.EOF {
+				break
+			}
+			b.Fatal(err)
+		}
+	}
+}
+
+func BenchmarkEncodeInt64(b *testing.B) {
+	for i := 0; i < b.N; i++ {
+		encode(&parameterStatus{}, int64(1234), oid.T_int8)
+	}
+}
+
+func BenchmarkEncodeFloat64(b *testing.B) {
+	for i := 0; i < b.N; i++ {
+		encode(&parameterStatus{}, 3.14159, oid.T_float8)
+	}
+}
+
+var testByteString = []byte("abcdefghijklmnopqrstuvwxyz")
+
+func BenchmarkEncodeByteaHex(b *testing.B) {
+	for i := 0; i < b.N; i++ {
+		encode(&parameterStatus{serverVersion: 90000}, testByteString, oid.T_bytea)
+	}
+}
+func BenchmarkEncodeByteaEscape(b *testing.B) {
+	for i := 0; i < b.N; i++ {
+		encode(&parameterStatus{serverVersion: 84000}, testByteString, oid.T_bytea)
+	}
+}
+
+func BenchmarkEncodeBool(b *testing.B) {
+	for i := 0; i < b.N; i++ {
+		encode(&parameterStatus{}, true, oid.T_bool)
+	}
+}
+
+var testTimestamptz = time.Date(2001, time.January, 1, 0, 0, 0, 0, time.Local)
+
+func BenchmarkEncodeTimestamptz(b *testing.B) {
+	for i := 0; i < b.N; i++ {
+		encode(&parameterStatus{}, testTimestamptz, oid.T_timestamptz)
+	}
+}
+
+var testIntBytes = []byte("1234")
+
+func BenchmarkDecodeInt64(b *testing.B) {
+	for i := 0; i < b.N; i++ {
+		decode(&parameterStatus{}, testIntBytes, oid.T_int8, formatText)
+	}
+}
+
+var testFloatBytes = []byte("3.14159")
+
+func BenchmarkDecodeFloat64(b *testing.B) {
+	for i := 0; i < b.N; i++ {
+		decode(&parameterStatus{}, testFloatBytes, oid.T_float8, formatText)
+	}
+}
+
+var testBoolBytes = []byte{'t'}
+
+func BenchmarkDecodeBool(b *testing.B) {
+	for i := 0; i < b.N; i++ {
+		decode(&parameterStatus{}, testBoolBytes, oid.T_bool, formatText)
+	}
+}
+
+func TestDecodeBool(t *testing.T) {
+	db := openTestConn(t)
+	rows, err := db.Query("select true")
+	if err != nil {
+		t.Fatal(err)
+	}
+	rows.Close()
+}
+
+var testTimestamptzBytes = []byte("2013-09-17 22:15:32.360754-07")
+
+func BenchmarkDecodeTimestamptz(b *testing.B) {
+	for i := 0; i < b.N; i++ {
+		decode(&parameterStatus{}, testTimestamptzBytes, oid.T_timestamptz, formatText)
+	}
+}
+
+func BenchmarkDecodeTimestamptzMultiThread(b *testing.B) {
+	oldProcs := runtime.GOMAXPROCS(0)
+	defer runtime.GOMAXPROCS(oldProcs)
+	runtime.GOMAXPROCS(runtime.NumCPU())
+	globalLocationCache = newLocationCache()
+
+	f := func(wg *sync.WaitGroup, loops int) {
+		defer wg.Done()
+		for i := 0; i < loops; i++ {
+			decode(&parameterStatus{}, testTimestamptzBytes, oid.T_timestamptz, formatText)
+		}
+	}
+
+	wg := &sync.WaitGroup{}
+	b.ResetTimer()
+	for j := 0; j < 10; j++ {
+		wg.Add(1)
+		go f(wg, b.N/10)
+	}
+	wg.Wait()
+}
+
+func BenchmarkLocationCache(b *testing.B) {
+	globalLocationCache = newLocationCache()
+	for i := 0; i < b.N; i++ {
+		globalLocationCache.getLocation(rand.Intn(10000))
+	}
+}
+
+func BenchmarkLocationCacheMultiThread(b *testing.B) {
+	oldProcs := runtime.GOMAXPROCS(0)
+	defer runtime.GOMAXPROCS(oldProcs)
+	runtime.GOMAXPROCS(runtime.NumCPU())
+	globalLocationCache = newLocationCache()
+
+	f := func(wg *sync.WaitGroup, loops int) {
+		defer wg.Done()
+		for i := 0; i < loops; i++ {
+			globalLocationCache.getLocation(rand.Intn(10000))
+		}
+	}
+
+	wg := &sync.WaitGroup{}
+	b.ResetTimer()
+	for j := 0; j < 10; j++ {
+		wg.Add(1)
+		go f(wg, b.N/10)
+	}
+	wg.Wait()
+}
+
+// Stress test the performance of parsing results from the wire.
+func BenchmarkResultParsing(b *testing.B) {
+	b.StopTimer()
+
+	db := openTestConn(b)
+	defer db.Close()
+	_, err := db.Exec("BEGIN")
+	if err != nil {
+		b.Fatal(err)
+	}
+
+	b.StartTimer()
+	for i := 0; i < b.N; i++ {
+		res, err := db.Query("SELECT generate_series(1, 50000)")
+		if err != nil {
+			b.Fatal(err)
+		}
+		res.Close()
+	}
+}

third_party/highgo-pq/buf.go

@@ -0,0 +1,91 @@
+package pq
+
+import (
+	"bytes"
+	"encoding/binary"
+
+	"github.com/lib/pq/oid"
+)
+
+type readBuf []byte
+
+func (b *readBuf) int32() (n int) {
+	n = int(int32(binary.BigEndian.Uint32(*b)))
+	*b = (*b)[4:]
+	return
+}
+
+func (b *readBuf) oid() (n oid.Oid) {
+	n = oid.Oid(binary.BigEndian.Uint32(*b))
+	*b = (*b)[4:]
+	return
+}
+
+// N.B: this is actually an unsigned 16-bit integer, unlike int32
+func (b *readBuf) int16() (n int) {
+	n = int(binary.BigEndian.Uint16(*b))
+	*b = (*b)[2:]
+	return
+}
+
+func (b *readBuf) string() string {
+	i := bytes.IndexByte(*b, 0)
+	if i < 0 {
+		errorf("invalid message format; expected string terminator")
+	}
+	s := (*b)[:i]
+	*b = (*b)[i+1:]
+	return string(s)
+}
+
+func (b *readBuf) next(n int) (v []byte) {
+	v = (*b)[:n]
+	*b = (*b)[n:]
+	return
+}
+
+func (b *readBuf) byte() byte {
+	return b.next(1)[0]
+}
+
+type writeBuf struct {
+	buf []byte
+	pos int
+}
+
+func (b *writeBuf) int32(n int) {
+	x := make([]byte, 4)
+	binary.BigEndian.PutUint32(x, uint32(n))
+	b.buf = append(b.buf, x...)
+}
+
+func (b *writeBuf) int16(n int) {
+	x := make([]byte, 2)
+	binary.BigEndian.PutUint16(x, uint16(n))
+	b.buf = append(b.buf, x...)
+}
+
+func (b *writeBuf) string(s string) {
+	b.buf = append(append(b.buf, s...), '\000')
+}
+
+func (b *writeBuf) byte(c byte) {
+	b.buf = append(b.buf, c)
+}
+
+func (b *writeBuf) bytes(v []byte) {
+	b.buf = append(b.buf, v...)
+}
+
+func (b *writeBuf) wrap() []byte {
+	p := b.buf[b.pos:]
+	binary.BigEndian.PutUint32(p, uint32(len(p)))
+	return b.buf
+}
+
+func (b *writeBuf) next(c byte) {
+	p := b.buf[b.pos:]
+	binary.BigEndian.PutUint32(p, uint32(len(p)))
+	b.pos = len(b.buf) + 1
+	b.buf = append(b.buf, c, 0, 0, 0, 0)
+}

third_party/highgo-pq/buf_test.go

@@ -0,0 +1,16 @@
+package pq
+
+import "testing"
+
+func Benchmark_writeBuf_string(b *testing.B) {
+	var buf writeBuf
+	const s = "foo"
+
+	b.ReportAllocs()
+	b.ResetTimer()
+
+	for i := 0; i < b.N; i++ {
+		buf.string(s)
+		buf.buf = buf.buf[:0]
+	}
+}

third_party/highgo-pq/certs/Makefile

@@ -0,0 +1,37 @@
+.PHONY: all root-ssl server-ssl client-ssl
+
+# Rebuilds self-signed root/server/client certs/keys in a consistent way
+all: root-ssl server-ssl client-ssl
+	rm -f .srl
+
+root-ssl:
+	openssl req -new -sha256 -nodes -newkey rsa:2048 \
+		-config ./certs/root.cnf \
+		-keyout /tmp/root.key \
+		-out /tmp/root.csr
+	openssl x509 -req -days 3653 -sha256 \
+		-in /tmp/root.csr  \
+		-extfile /etc/ssl/openssl.cnf -extensions v3_ca \
+		-signkey /tmp/root.key \
+		-out ./certs/root.crt
+
+server-ssl:
+	openssl req -new -sha256 -nodes -newkey rsa:2048 \
+		-config ./certs/server.cnf \
+		-keyout ./certs/server.key \
+		-out /tmp/server.csr
+	openssl x509 -req -days 3653 -sha256 \
+		-extfile ./certs/server.cnf -extensions req_ext \
+		-CA ./certs/root.crt -CAkey /tmp/root.key -CAcreateserial \
+		-in /tmp/server.csr \
+		-out ./certs/server.crt
+
+client-ssl:
+	openssl req -new -sha256 -nodes -newkey rsa:2048 \
+		-config ./certs/postgresql.cnf \
+		-keyout ./certs/postgresql.key \
+		-out /tmp/postgresql.csr
+	openssl x509 -req -days 3653 -sha256 \
+		-CA ./certs/root.crt -CAkey /tmp/root.key -CAcreateserial \
+		-in /tmp/postgresql.csr \
+		-out ./certs/postgresql.crt

third_party/highgo-pq/certs/README

@@ -0,0 +1,3 @@
+This directory contains certificates and private keys for testing some
+SSL-related functionality in Travis.  Do NOT use these certificates for
+anything other than testing.

third_party/highgo-pq/certs/bogus_root.crt

@@ -0,0 +1,19 @@
+-----BEGIN CERTIFICATE-----
+MIIDBjCCAe6gAwIBAgIQSnDYp/Naet9HOZljF5PuwDANBgkqhkiG9w0BAQsFADAr
+MRIwEAYDVQQKEwlDb2Nrcm9hY2gxFTATBgNVBAMTDENvY2tyb2FjaCBDQTAeFw0x
+NjAyMDcxNjQ0MzdaFw0xNzAyMDYxNjQ0MzdaMCsxEjAQBgNVBAoTCUNvY2tyb2Fj
+aDEVMBMGA1UEAxMMQ29ja3JvYWNoIENBMIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8A
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+cqSrNwswgLUQT3vWyTjmM51HEb2vMYWKmjZ+sBQYAUP1CadrN/+OTfNGnlF1+B4w
+IXOzh7EvQmJJnNybLe4a/aRvj1NE2n8Z898B76SVU9WbfKKz8VwLzuIPDqkKcZda
+lMy5yzthyztV9YjcWs2zVOUGZvGdAhDrvZuUq6mSmxrBEvR2LBOggmVf3tGRT+Ls
+lW7c9Lrva5zLHuqmoPP07A+vuI9a0D1X44jwGDuPWJ5RnTOQ63Uez12mKNjqleHw
+DnkwNanuO8dhAA==
+-----END CERTIFICATE-----

third_party/highgo-pq/certs/postgresql.cnf

@@ -0,0 +1,10 @@
+[req]
+distinguished_name = req_distinguished_name
+prompt             = no
+
+[req_distinguished_name]
+C   = US
+ST  = Nevada
+L   = Las Vegas
+O   = github.com/lib/pq
+CN  = pqgosslcert

third_party/highgo-pq/certs/postgresql.crt

@@ -0,0 +1,20 @@
+-----BEGIN CERTIFICATE-----
+MIIDPjCCAiYCCQD4nsC6zsmIqjANBgkqhkiG9w0BAQsFADBeMQswCQYDVQQGEwJV
+UzEPMA0GA1UECAwGTmV2YWRhMRIwEAYDVQQHDAlMYXMgVmVnYXMxGjAYBgNVBAoM
+EWdpdGh1Yi5jb20vbGliL3BxMQ4wDAYDVQQDDAVwcSBDQTAeFw0yMTA5MDIwMTU1
+MDJaFw0zMTA5MDMwMTU1MDJaMGQxCzAJBgNVBAYTAlVTMQ8wDQYDVQQIDAZOZXZh
+ZGExEjAQBgNVBAcMCUxhcyBWZWdhczEaMBgGA1UECgwRZ2l0aHViLmNvbS9saWIv
+cHExFDASBgNVBAMMC3BxZ29zc2xjZXJ0MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8A
+MIIBCgKCAQEAx0ucPVUNCrVmbyithwWrmmZ1dGudBwhSyDB6af4z5Cr+S6dx2SRU
+UGUw3Lv+z+tUqQ7hJj0oNddIQeYKl/Tt6JPpZsQfERP/cUGedtyt7HnCKobBL+0B
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+he9lDiJfOQuPuLbOxzctP9v9
+-----END CERTIFICATE-----

third_party/highgo-pq/certs/postgresql.key

@@ -0,0 +1,28 @@
+-----BEGIN PRIVATE KEY-----
+MIIEvAIBADANBgkqhkiG9w0BAQEFAASCBKYwggSiAgEAAoIBAQDHS5w9VQ0KtWZv
+KK2HBauaZnV0a50HCFLIMHpp/jPkKv5Lp3HZJFRQZTDcu/7P61SpDuEmPSg110hB
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+76rcaFqJOz7OeywRG5bHUg==
+-----END PRIVATE KEY-----

third_party/highgo-pq/certs/root.cnf

@@ -0,0 +1,10 @@
+[req]
+distinguished_name = req_distinguished_name
+prompt             = no
+
+[req_distinguished_name]
+C   = US
+ST  = Nevada
+L   = Las Vegas
+O   = github.com/lib/pq
+CN  = pq CA

third_party/highgo-pq/certs/root.crt

@@ -0,0 +1,24 @@
+-----BEGIN CERTIFICATE-----
+MIIEBjCCAu6gAwIBAgIJAPizR+OD14YnMA0GCSqGSIb3DQEBCwUAMF4xCzAJBgNV
+BAYTAlVTMQ8wDQYDVQQIDAZOZXZhZGExEjAQBgNVBAcMCUxhcyBWZWdhczEaMBgG
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+q2BjRaQUitp/FH4NSdXtVrMME5T1JBBZHsQkNL3cNRzRKwY/Vj5UGEDxDS7lILUC
+e01L4oaK0iKQn4beALU+TvKoAHdPvoxpPpnhkF5ss9HmdcvRktJrKZemDJZswZ7/
++omx8ZPIYYUH5VJJYYE88S7guAt+ZaKIUlel/t6xPbo2ZySFSg9u1uB99n+jTo3L
+1rAxFnN3FCX2jBqgP29xMVmisaN5k04UmyI=
+-----END CERTIFICATE-----

third_party/highgo-pq/certs/server.cnf

@@ -0,0 +1,29 @@
+[ req ]
+default_bits        = 2048
+distinguished_name  = subject
+req_extensions      = req_ext
+x509_extensions     = x509_ext
+string_mask         = utf8only
+prompt              = no
+
+[ subject ]
+C     = US
+ST    = Nevada
+L     = Las Vegas
+O     = github.com/lib/pq
+
+[ x509_ext ]
+subjectKeyIdentifier   = hash
+authorityKeyIdentifier = keyid,issuer
+
+basicConstraints      = CA:FALSE
+keyUsage              = digitalSignature, keyEncipherment
+subjectAltName        = DNS:postgres
+nsComment             = "OpenSSL Generated Certificate"
+
+[ req_ext ]
+subjectKeyIdentifier   = hash
+basicConstraints      = CA:FALSE
+keyUsage              = digitalSignature, keyEncipherment
+subjectAltName        = DNS:postgres
+nsComment             = "OpenSSL Generated Certificate"

third_party/highgo-pq/certs/server.crt

@@ -0,0 +1,22 @@
+-----BEGIN CERTIFICATE-----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+-----END CERTIFICATE-----

third_party/highgo-pq/certs/server.key

@@ -0,0 +1,28 @@
+-----BEGIN PRIVATE KEY-----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+-----END PRIVATE KEY-----

third_party/highgo-pq/conn_go115.go

@@ -0,0 +1,8 @@
+//go:build go1.15
+// +build go1.15
+
+package pq
+
+import "database/sql/driver"
+
+var _ driver.Validator = &conn{}

third_party/highgo-pq/conn_go18.go

@@ -0,0 +1,261 @@
+package pq
+
+import (
+	"context"
+	"database/sql"
+	"database/sql/driver"
+	"fmt"
+	"io"
+	"io/ioutil"
+	"time"
+)
+
+const (
+	watchCancelDialContextTimeout = time.Second * 10
+)
+
+// Implement the "QueryerContext" interface
+func (cn *conn) QueryContext(ctx context.Context, query string, args []driver.NamedValue) (driver.Rows, error) {
+	list := make([]driver.Value, len(args))
+	namedValueMap := map[string]int{}
+	for i, nv := range args {
+		list[i] = nv.Value
+		if nv.Name != "" {
+			namedValueMap[nv.Name] = i + 1
+		}
+	}
+
+	if cn.isProcedure(list) {
+		return cn.QueryProcedure(query, list)
+	}
+
+	finish := cn.watchCancel(ctx)
+	r, err := cn.query(query, list)
+	if err != nil {
+		if finish != nil {
+			finish()
+		}
+		return nil, err
+	}
+	r.finish = finish
+	return r, nil
+}
+
+// Implement the "ExecerContext" interface
+func (cn *conn) ExecContext(ctx context.Context, query string, args []driver.NamedValue) (driver.Result, error) {
+	list := make([]driver.Value, len(args))
+	namedValueMap := map[string]int{}
+	for i, nv := range args {
+		list[i] = nv.Value
+		if nv.Name != "" {
+			namedValueMap[nv.Name] = i + 1
+		}
+	}
+
+	if finish := cn.watchCancel(ctx); finish != nil {
+		defer finish()
+	}
+
+	return cn.Exec(query, list)
+}
+
+// Implement the "ConnPrepareContext" interface
+func (cn *conn) PrepareContext(ctx context.Context, query string) (driver.Stmt, error) {
+	if finish := cn.watchCancel(ctx); finish != nil {
+		defer finish()
+	}
+
+	return cn.Prepare(query)
+}
+
+// Implement the "ConnBeginTx" interface
+func (cn *conn) BeginTx(ctx context.Context, opts driver.TxOptions) (driver.Tx, error) {
+	var mode string
+
+	switch sql.IsolationLevel(opts.Isolation) {
+	case sql.LevelDefault:
+		// Don't touch mode: use the server's default
+	case sql.LevelReadUncommitted:
+		mode = " ISOLATION LEVEL READ UNCOMMITTED"
+	case sql.LevelReadCommitted:
+		mode = " ISOLATION LEVEL READ COMMITTED"
+	case sql.LevelRepeatableRead:
+		mode = " ISOLATION LEVEL REPEATABLE READ"
+	case sql.LevelSerializable:
+		mode = " ISOLATION LEVEL SERIALIZABLE"
+	default:
+		return nil, fmt.Errorf("pq: isolation level not supported: %d", opts.Isolation)
+	}
+
+	if opts.ReadOnly {
+		mode += " READ ONLY"
+	} else {
+		mode += " READ WRITE"
+	}
+
+	tx, err := cn.begin(mode)
+	if err != nil {
+		return nil, err
+	}
+	cn.txnFinish = cn.watchCancel(ctx)
+	return tx, nil
+}
+
+func (cn *conn) Ping(ctx context.Context) error {
+	if finish := cn.watchCancel(ctx); finish != nil {
+		defer finish()
+	}
+	rows, err := cn.simpleQuery(";")
+	if err != nil {
+		return driver.ErrBadConn // https://golang.org/pkg/database/sql/driver/#Pinger
+	}
+	rows.Close()
+	return nil
+}
+
+func (cn *conn) watchCancel(ctx context.Context) func() {
+	if done := ctx.Done(); done != nil {
+		finished := make(chan struct{}, 1)
+		go func() {
+			select {
+			case <-done:
+				select {
+				case finished <- struct{}{}:
+				default:
+					// We raced with the finish func, let the next query handle this with the
+					// context.
+					return
+				}
+
+				// Set the connection state to bad so it does not get reused.
+				cn.err.set(ctx.Err())
+
+				// At this point the function level context is canceled,
+				// so it must not be used for the additional network
+				// request to cancel the query.
+				// Create a new context to pass into the dial.
+				ctxCancel, cancel := context.WithTimeout(context.Background(), watchCancelDialContextTimeout)
+				defer cancel()
+
+				_ = cn.cancel(ctxCancel)
+			case <-finished:
+			}
+		}()
+		return func() {
+			select {
+			case <-finished:
+				cn.err.set(ctx.Err())
+				cn.Close()
+			case finished <- struct{}{}:
+			}
+		}
+	}
+	return nil
+}
+
+func (cn *conn) cancel(ctx context.Context) error {
+	// Create a new values map (copy). This makes sure the connection created
+	// in this method cannot write to the same underlying data, which could
+	// cause a concurrent map write panic. This is necessary because cancel
+	// is called from a goroutine in watchCancel.
+	o := make(values)
+	for k, v := range cn.opts {
+		o[k] = v
+	}
+
+	c, err := dial(ctx, cn.dialer, o)
+	if err != nil {
+		return err
+	}
+	defer c.Close()
+
+	{
+		can := conn{
+			c: c,
+		}
+		err = can.ssl(o)
+		if err != nil {
+			return err
+		}
+
+		w := can.writeBuf(0)
+		w.int32(80877102) // cancel request code
+		w.int32(cn.processID)
+		w.int32(cn.secretKey)
+
+		if err := can.sendStartupPacket(w); err != nil {
+			return err
+		}
+	}
+
+	// Read until EOF to ensure that the server received the cancel.
+	{
+		_, err := io.Copy(ioutil.Discard, c)
+		return err
+	}
+}
+
+// Implement the "StmtQueryContext" interface
+func (st *stmt) QueryContext(ctx context.Context, args []driver.NamedValue) (driver.Rows, error) {
+	list := make([]driver.Value, len(args))
+	for i, nv := range args {
+		list[i] = nv.Value
+	}
+	finish := st.watchCancel(ctx)
+	r, err := st.query(list)
+	if err != nil {
+		if finish != nil {
+			finish()
+		}
+		return nil, err
+	}
+	r.finish = finish
+	return r, nil
+}
+
+// Implement the "StmtExecContext" interface
+func (st *stmt) ExecContext(ctx context.Context, args []driver.NamedValue) (driver.Result, error) {
+	list := make([]driver.Value, len(args))
+	for i, nv := range args {
+		list[i] = nv.Value
+	}
+
+	if finish := st.watchCancel(ctx); finish != nil {
+		defer finish()
+	}
+
+	return st.Exec(list)
+}
+
+// watchCancel is implemented on stmt in order to not mark the parent conn as bad
+func (st *stmt) watchCancel(ctx context.Context) func() {
+	if done := ctx.Done(); done != nil {
+		finished := make(chan struct{})
+		go func() {
+			select {
+			case <-done:
+				// At this point the function level context is canceled,
+				// so it must not be used for the additional network
+				// request to cancel the query.
+				// Create a new context to pass into the dial.
+				ctxCancel, cancel := context.WithTimeout(context.Background(), watchCancelDialContextTimeout)
+				defer cancel()
+
+				_ = st.cancel(ctxCancel)
+				finished <- struct{}{}
+			case <-finished:
+			}
+		}()
+		return func() {
+			select {
+			case <-finished:
+			case finished <- struct{}{}:
+			}
+		}
+	}
+	return nil
+}
+
+func (st *stmt) cancel(ctx context.Context) error {
+	return st.cn.cancel(ctx)
+}

third_party/highgo-pq/conn_go19.go

@@ -0,0 +1,45 @@
+//go:build go1.9
+// +build go1.9
+
+package pq
+
+import (
+	"database/sql"
+	"database/sql/driver"
+	"reflect"
+)
+
+var _ driver.NamedValueChecker = (*conn)(nil)
+
+func (c *conn) CheckNamedValue(nv *driver.NamedValue) error {
+	if _, ok := nv.Value.(driver.Valuer); ok {
+		// Ignore Valuer, for backward compatibility with pq.Array().
+		return driver.ErrSkip
+	}
+
+	// Ignoring []byte / []uint8.
+	if _, ok := nv.Value.([]uint8); ok {
+		return driver.ErrSkip
+	}
+
+	v := reflect.ValueOf(nv.Value)
+	if v.Kind() == reflect.Ptr {
+		v = v.Elem()
+	}
+	if v.Kind() == reflect.Slice {
+		var err error
+		nv.Value, err = Array(v.Interface()).Value()
+		return err
+	}
+	if v.Kind() == reflect.Struct {
+		var err error
+		switch nv.Value.(type) {
+		case sql.Out:
+			return err
+		default:
+			return driver.ErrSkip
+		}
+	}
+
+	return driver.ErrSkip
+}

third_party/highgo-pq/conn_go19_test.go

@@ -0,0 +1,83 @@
+//go:build go1.9
+// +build go1.9
+
+package pq
+
+import (
+	"fmt"
+	"reflect"
+	"testing"
+)
+
+func TestArrayArg(t *testing.T) {
+	db := openTestConn(t)
+	defer db.Close()
+
+	for _, tc := range []struct {
+		pgType  string
+		in, out interface{}
+	}{
+		{
+			pgType: "int[]",
+			in:     []int{245, 231},
+			out:    []int64{245, 231},
+		},
+		{
+			pgType: "int[]",
+			in:     &[]int{245, 231},
+			out:    []int64{245, 231},
+		},
+		{
+			pgType: "int[]",
+			in:     []int64{245, 231},
+		},
+		{
+			pgType: "int[]",
+			in:     &[]int64{245, 231},
+			out:    []int64{245, 231},
+		},
+		{
+			pgType: "varchar[]",
+			in:     []string{"hello", "world"},
+		},
+		{
+			pgType: "varchar[]",
+			in:     &[]string{"hello", "world"},
+			out:    []string{"hello", "world"},
+		},
+	} {
+		if tc.out == nil {
+			tc.out = tc.in
+		}
+		t.Run(fmt.Sprintf("%#v", tc.in), func(t *testing.T) {
+			r, err := db.Query(fmt.Sprintf("SELECT $1::%s", tc.pgType), tc.in)
+			if err != nil {
+				t.Fatal(err)
+			}
+			defer r.Close()
+
+			if !r.Next() {
+				if r.Err() != nil {
+					t.Fatal(r.Err())
+				}
+				t.Fatal("expected row")
+			}
+
+			defer func() {
+				if r.Next() {
+					t.Fatal("unexpected row")
+				}
+			}()
+
+			got := reflect.New(reflect.TypeOf(tc.out))
+			if err := r.Scan(Array(got.Interface())); err != nil {
+				t.Fatal(err)
+			}
+
+			if !reflect.DeepEqual(tc.out, got.Elem().Interface()) {
+				t.Errorf("got %v, want %v", got, tc.out)
+			}
+		})
+	}
+
+}

third_party/highgo-pq/connector.go

@@ -0,0 +1,120 @@
+package pq
+
+import (
+	"context"
+	"database/sql/driver"
+	"errors"
+	"fmt"
+	"os"
+	"strings"
+)
+
+// Connector represents a fixed configuration for the pq driver with a given
+// name. Connector satisfies the database/sql/driver Connector interface and
+// can be used to create any number of DB Conn's via the database/sql OpenDB
+// function.
+//
+// See https://golang.org/pkg/database/sql/driver/#Connector.
+// See https://golang.org/pkg/database/sql/#OpenDB.
+type Connector struct {
+	opts   values
+	dialer Dialer
+}
+
+// Connect returns a connection to the database using the fixed configuration
+// of this Connector. Context is not used.
+func (c *Connector) Connect(ctx context.Context) (driver.Conn, error) {
+	return c.open(ctx)
+}
+
+// Dialer allows change the dialer used to open connections.
+func (c *Connector) Dialer(dialer Dialer) {
+	c.dialer = dialer
+}
+
+// Driver returns the underlying driver of this Connector.
+func (c *Connector) Driver() driver.Driver {
+	return &Driver{}
+}
+
+// NewConnector returns a connector for the pq driver in a fixed configuration
+// with the given dsn. The returned connector can be used to create any number
+// of equivalent Conn's. The returned connector is intended to be used with
+// database/sql.OpenDB.
+//
+// See https://golang.org/pkg/database/sql/driver/#Connector.
+// See https://golang.org/pkg/database/sql/#OpenDB.
+func NewConnector(dsn string) (*Connector, error) {
+	var err error
+	o := make(values)
+
+	// A number of defaults are applied here, in this order:
+	//
+	// * Very low precedence defaults applied in every situation
+	// * Environment variables
+	// * Explicitly passed connection information
+	o["host"] = "localhost"
+	o["port"] = "5432"
+	// N.B.: Extra float digits should be set to 3, but that breaks
+	// Postgres 8.4 and older, where the max is 2.
+	o["extra_float_digits"] = "2"
+	for k, v := range parseEnviron(os.Environ()) {
+		o[k] = v
+	}
+
+	if strings.HasPrefix(dsn, "postgres://") || strings.HasPrefix(dsn, "postgresql://") {
+		dsn, err = ParseURL(dsn)
+		if err != nil {
+			return nil, err
+		}
+	}
+
+	if err := parseOpts(dsn, o); err != nil {
+		return nil, err
+	}
+
+	// Use the "fallback" application name if necessary
+	if fallback, ok := o["fallback_application_name"]; ok {
+		if _, ok := o["application_name"]; !ok {
+			o["application_name"] = fallback
+		}
+	}
+
+	// We can't work with any client_encoding other than UTF-8 currently.
+	// However, we have historically allowed the user to set it to UTF-8
+	// explicitly, and there's no reason to break such programs, so allow that.
+	// Note that the "options" setting could also set client_encoding, but
+	// parsing its value is not worth it.  Instead, we always explicitly send
+	// client_encoding as a separate run-time parameter, which should override
+	// anything set in options.
+	if enc, ok := o["client_encoding"]; ok && !isUTF8(enc) {
+		return nil, errors.New("client_encoding must be absent or 'UTF8'")
+	}
+	o["client_encoding"] = "UTF8"
+	// DateStyle needs a similar treatment.
+	if datestyle, ok := o["datestyle"]; ok {
+		if datestyle != "ISO, MDY" {
+			return nil, fmt.Errorf("setting datestyle must be absent or %v; got %v", "ISO, MDY", datestyle)
+		}
+	} else {
+		o["datestyle"] = "ISO, MDY"
+	}
+
+	// If a user is not provided by any other means, the last
+	// resort is to use the current operating system provided user
+	// name.
+	if _, ok := o["user"]; !ok {
+		u, err := userCurrent()
+		if err != nil {
+			return nil, err
+		}
+		o["user"] = u
+	}
+
+	// SSL is not necessary or supported over UNIX domain sockets
+	if network, _ := network(o); network == "unix" {
+		o["sslmode"] = "disable"
+	}
+
+	return &Connector{opts: o, dialer: defaultDialer{}}, nil
+}

third_party/highgo-pq/connector_example_test.go

@@ -0,0 +1,30 @@
+//go:build go1.10
+// +build go1.10
+
+package pq_test
+
+import (
+	"database/sql"
+	"fmt"
+
+	"github.com/lib/pq"
+)
+
+func ExampleNewConnector() {
+	name := ""
+	connector, err := pq.NewConnector(name)
+	if err != nil {
+		fmt.Println(err)
+		return
+	}
+	db := sql.OpenDB(connector)
+	defer db.Close()
+
+	// Use the DB
+	txn, err := db.Begin()
+	if err != nil {
+		fmt.Println(err)
+		return
+	}
+	txn.Rollback()
+}

third_party/highgo-pq/connector_test.go

@@ -0,0 +1,87 @@
+//go:build go1.10
+// +build go1.10
+
+package pq
+
+import (
+	"context"
+	"database/sql"
+	"database/sql/driver"
+	"os"
+	"testing"
+)
+
+func TestNewConnector_WorksWithOpenDB(t *testing.T) {
+	name := ""
+	c, err := NewConnector(name)
+	if err != nil {
+		t.Fatal(err)
+	}
+	db := sql.OpenDB(c)
+	defer db.Close()
+	// database/sql might not call our Open at all unless we do something with
+	// the connection
+	txn, err := db.Begin()
+	if err != nil {
+		t.Fatal(err)
+	}
+	txn.Rollback()
+}
+
+func TestNewConnector_Connect(t *testing.T) {
+	name := ""
+	c, err := NewConnector(name)
+	if err != nil {
+		t.Fatal(err)
+	}
+	db, err := c.Connect(context.Background())
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer db.Close()
+	// database/sql might not call our Open at all unless we do something with
+	// the connection
+	txn, err := db.(driver.ConnBeginTx).BeginTx(context.Background(), driver.TxOptions{})
+	if err != nil {
+		t.Fatal(err)
+	}
+	txn.Rollback()
+}
+
+func TestNewConnector_Driver(t *testing.T) {
+	name := ""
+	c, err := NewConnector(name)
+	if err != nil {
+		t.Fatal(err)
+	}
+	db, err := c.Driver().Open(name)
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer db.Close()
+	// database/sql might not call our Open at all unless we do something with
+	// the connection
+	txn, err := db.(driver.ConnBeginTx).BeginTx(context.Background(), driver.TxOptions{})
+	if err != nil {
+		t.Fatal(err)
+	}
+	txn.Rollback()
+}
+
+func TestNewConnector_Environ(t *testing.T) {
+	name := ""
+	os.Setenv("PGPASSFILE", "/tmp/.pgpass")
+	defer os.Unsetenv("PGPASSFILE")
+	c, err := NewConnector(name)
+	if err != nil {
+		t.Fatal(err)
+	}
+	for key, expected := range map[string]string{
+		"passfile": "/tmp/.pgpass",
+	} {
+		if got := c.opts[key]; got != expected {
+			t.Fatalf("Getting values from environment variables, for %v expected %s got %s", key, expected, got)
+		}
+	}
+
+}

third_party/highgo-pq/copy.go

@@ -0,0 +1,348 @@
+package pq
+
+import (
+	"bytes"
+	"context"
+	"database/sql/driver"
+	"encoding/binary"
+	"errors"
+	"fmt"
+	"sync"
+)
+
+var (
+	errCopyInClosed               = errors.New("pq: copyin statement has already been closed")
+	errBinaryCopyNotSupported     = errors.New("pq: only text format supported for COPY")
+	errCopyToNotSupported         = errors.New("pq: COPY TO is not supported")
+	errCopyNotSupportedOutsideTxn = errors.New("pq: COPY is only allowed inside a transaction")
+	errCopyInProgress             = errors.New("pq: COPY in progress")
+)
+
+// CopyIn creates a COPY FROM statement which can be prepared with
+// Tx.Prepare().  The target table should be visible in search_path.
+func CopyIn(table string, columns ...string) string {
+	buffer := bytes.NewBufferString("COPY ")
+	BufferQuoteIdentifier(table, buffer)
+	buffer.WriteString(" (")
+	makeStmt(buffer, columns...)
+	return buffer.String()
+}
+
+// MakeStmt makes the stmt string for CopyIn and CopyInSchema.
+func makeStmt(buffer *bytes.Buffer, columns ...string) {
+	//s := bytes.NewBufferString()
+	for i, col := range columns {
+		if i != 0 {
+			buffer.WriteString(", ")
+		}
+		BufferQuoteIdentifier(col, buffer)
+	}
+	buffer.WriteString(") FROM STDIN")
+}
+
+// CopyInSchema creates a COPY FROM statement which can be prepared with
+// Tx.Prepare().
+func CopyInSchema(schema, table string, columns ...string) string {
+	buffer := bytes.NewBufferString("COPY ")
+	BufferQuoteIdentifier(schema, buffer)
+	buffer.WriteRune('.')
+	BufferQuoteIdentifier(table, buffer)
+	buffer.WriteString(" (")
+	makeStmt(buffer, columns...)
+	return buffer.String()
+}
+
+type copyin struct {
+	cn      *conn
+	buffer  []byte
+	rowData chan []byte
+	done    chan bool
+
+	closed bool
+
+	mu struct {
+		sync.Mutex
+		err error
+		driver.Result
+	}
+}
+
+const ciBufferSize = 64 * 1024
+
+// flush buffer before the buffer is filled up and needs reallocation
+const ciBufferFlushSize = 63 * 1024
+
+func (cn *conn) prepareCopyIn(q string) (_ driver.Stmt, err error) {
+	if !cn.isInTransaction() {
+		return nil, errCopyNotSupportedOutsideTxn
+	}
+
+	ci := &copyin{
+		cn:      cn,
+		buffer:  make([]byte, 0, ciBufferSize),
+		rowData: make(chan []byte),
+		done:    make(chan bool, 1),
+	}
+	// add CopyData identifier + 4 bytes for message length
+	ci.buffer = append(ci.buffer, 'd', 0, 0, 0, 0)
+
+	b := cn.writeBuf('Q')
+	b.string(q)
+	cn.send(b)
+
+awaitCopyInResponse:
+	for {
+		t, r := cn.recv1()
+		switch t {
+		case 'G':
+			if r.byte() != 0 {
+				err = errBinaryCopyNotSupported
+				break awaitCopyInResponse
+			}
+			go ci.resploop()
+			return ci, nil
+		case 'H':
+			err = errCopyToNotSupported
+			break awaitCopyInResponse
+		case 'E':
+			err = parseError(r)
+		case 'Z':
+			if err == nil {
+				ci.setBad(driver.ErrBadConn)
+				errorf("unexpected ReadyForQuery in response to COPY")
+			}
+			cn.processReadyForQuery(r)
+			return nil, err
+		default:
+			ci.setBad(driver.ErrBadConn)
+			errorf("unknown response for copy query: %q", t)
+		}
+	}
+
+	// something went wrong, abort COPY before we return
+	b = cn.writeBuf('f')
+	b.string(err.Error())
+	cn.send(b)
+
+	for {
+		t, r := cn.recv1()
+		switch t {
+		case 'c', 'C', 'E':
+		case 'Z':
+			// correctly aborted, we're done
+			cn.processReadyForQuery(r)
+			return nil, err
+		default:
+			ci.setBad(driver.ErrBadConn)
+			errorf("unknown response for CopyFail: %q", t)
+		}
+	}
+}
+
+func (ci *copyin) flush(buf []byte) {
+	// set message length (without message identifier)
+	binary.BigEndian.PutUint32(buf[1:], uint32(len(buf)-1))
+
+	_, err := ci.cn.c.Write(buf)
+	if err != nil {
+		panic(err)
+	}
+}
+
+func (ci *copyin) resploop() {
+	for {
+		var r readBuf
+		t, err := ci.cn.recvMessage(&r)
+		if err != nil {
+			ci.setBad(driver.ErrBadConn)
+			ci.setError(err)
+			ci.done <- true
+			return
+		}
+		switch t {
+		case 'C':
+			// complete
+			res, _ := ci.cn.parseComplete(r.string())
+			ci.setResult(res)
+		case 'N':
+			if n := ci.cn.noticeHandler; n != nil {
+				n(parseError(&r))
+			}
+		case 'Z':
+			ci.cn.processReadyForQuery(&r)
+			ci.done <- true
+			return
+		case 'E':
+			err := parseError(&r)
+			ci.setError(err)
+		default:
+			ci.setBad(driver.ErrBadConn)
+			ci.setError(fmt.Errorf("unknown response during CopyIn: %q", t))
+			ci.done <- true
+			return
+		}
+	}
+}
+
+func (ci *copyin) setBad(err error) {
+	ci.cn.err.set(err)
+}
+
+func (ci *copyin) getBad() error {
+	return ci.cn.err.get()
+}
+
+func (ci *copyin) err() error {
+	ci.mu.Lock()
+	err := ci.mu.err
+	ci.mu.Unlock()
+	return err
+}
+
+// setError() sets ci.err if one has not been set already.  Caller must not be
+// holding ci.Mutex.
+func (ci *copyin) setError(err error) {
+	ci.mu.Lock()
+	if ci.mu.err == nil {
+		ci.mu.err = err
+	}
+	ci.mu.Unlock()
+}
+
+func (ci *copyin) setResult(result driver.Result) {
+	ci.mu.Lock()
+	ci.mu.Result = result
+	ci.mu.Unlock()
+}
+
+func (ci *copyin) getResult() driver.Result {
+	ci.mu.Lock()
+	result := ci.mu.Result
+	ci.mu.Unlock()
+	if result == nil {
+		return driver.RowsAffected(0)
+	}
+	return result
+}
+
+func (ci *copyin) NumInput() int {
+	return -1
+}
+
+func (ci *copyin) Query(v []driver.Value) (r driver.Rows, err error) {
+	return nil, ErrNotSupported
+}
+
+// Exec inserts values into the COPY stream. The insert is asynchronous
+// and Exec can return errors from previous Exec calls to the same
+// COPY stmt.
+//
+// You need to call Exec(nil) to sync the COPY stream and to get any
+// errors from pending data, since Stmt.Close() doesn't return errors
+// to the user.
+func (ci *copyin) Exec(v []driver.Value) (r driver.Result, err error) {
+	if ci.closed {
+		return nil, errCopyInClosed
+	}
+
+	if err := ci.getBad(); err != nil {
+		return nil, err
+	}
+	defer ci.cn.errRecover(&err)
+
+	if err := ci.err(); err != nil {
+		return nil, err
+	}
+
+	if len(v) == 0 {
+		if err := ci.Close(); err != nil {
+			return driver.RowsAffected(0), err
+		}
+
+		return ci.getResult(), nil
+	}
+
+	numValues := len(v)
+	for i, value := range v {
+		ci.buffer = appendEncodedText(&ci.cn.parameterStatus, ci.buffer, value)
+		if i < numValues-1 {
+			ci.buffer = append(ci.buffer, '\t')
+		}
+	}
+
+	ci.buffer = append(ci.buffer, '\n')
+
+	if len(ci.buffer) > ciBufferFlushSize {
+		ci.flush(ci.buffer)
+		// reset buffer, keep bytes for message identifier and length
+		ci.buffer = ci.buffer[:5]
+	}
+
+	return driver.RowsAffected(0), nil
+}
+
+// CopyData inserts a raw string into the COPY stream. The insert is
+// asynchronous and CopyData can return errors from previous CopyData calls to
+// the same COPY stmt.
+//
+// You need to call Exec(nil) to sync the COPY stream and to get any
+// errors from pending data, since Stmt.Close() doesn't return errors
+// to the user.
+func (ci *copyin) CopyData(ctx context.Context, line string) (r driver.Result, err error) {
+	if ci.closed {
+		return nil, errCopyInClosed
+	}
+
+	if finish := ci.cn.watchCancel(ctx); finish != nil {
+		defer finish()
+	}
+
+	if err := ci.getBad(); err != nil {
+		return nil, err
+	}
+	defer ci.cn.errRecover(&err)
+
+	if err := ci.err(); err != nil {
+		return nil, err
+	}
+
+	ci.buffer = append(ci.buffer, []byte(line)...)
+	ci.buffer = append(ci.buffer, '\n')
+
+	if len(ci.buffer) > ciBufferFlushSize {
+		ci.flush(ci.buffer)
+		// reset buffer, keep bytes for message identifier and length
+		ci.buffer = ci.buffer[:5]
+	}
+
+	return driver.RowsAffected(0), nil
+}
+
+func (ci *copyin) Close() (err error) {
+	if ci.closed { // Don't do anything, we're already closed
+		return nil
+	}
+	ci.closed = true
+
+	if err := ci.getBad(); err != nil {
+		return err
+	}
+	defer ci.cn.errRecover(&err)
+
+	if len(ci.buffer) > 0 {
+		ci.flush(ci.buffer)
+	}
+	// Avoid touching the scratch buffer as resploop could be using it.
+	err = ci.cn.sendSimpleMessage('c')
+	if err != nil {
+		return err
+	}
+
+	<-ci.done
+	ci.cn.inCopy = false
+
+	if err := ci.err(); err != nil {
+		return err
+	}
+	return nil
+}

third_party/highgo-pq/doc.go

@@ -0,0 +1,268 @@
+/*
+Package pq is a pure Go Postgres driver for the database/sql package.
+
+In most cases clients will use the database/sql package instead of
+using this package directly. For example:
+
+	import (
+		"database/sql"
+
+		_ "github.com/lib/pq"
+	)
+
+	func main() {
+		connStr := "user=pqgotest dbname=pqgotest sslmode=verify-full"
+		db, err := sql.Open("postgres", connStr)
+		if err != nil {
+			log.Fatal(err)
+		}
+
+		age := 21
+		rows, err := db.Query("SELECT name FROM users WHERE age = $1", age)
+		…
+	}
+
+You can also connect to a database using a URL. For example:
+
+	connStr := "postgres://pqgotest:password@localhost/pqgotest?sslmode=verify-full"
+	db, err := sql.Open("postgres", connStr)
+
+
+Connection String Parameters
+
+
+Similarly to libpq, when establishing a connection using pq you are expected to
+supply a connection string containing zero or more parameters.
+A subset of the connection parameters supported by libpq are also supported by pq.
+Additionally, pq also lets you specify run-time parameters (such as search_path or work_mem)
+directly in the connection string.  This is different from libpq, which does not allow
+run-time parameters in the connection string, instead requiring you to supply
+them in the options parameter.
+
+For compatibility with libpq, the following special connection parameters are
+supported:
+
+	* dbname - The name of the database to connect to
+	* user - The user to sign in as
+	* password - The user's password
+	* host - The host to connect to. Values that start with / are for unix
+	  domain sockets. (default is localhost)
+	* port - The port to bind to. (default is 5432)
+	* sslmode - Whether or not to use SSL (default is require, this is not
+	  the default for libpq)
+	* fallback_application_name - An application_name to fall back to if one isn't provided.
+	* connect_timeout - Maximum wait for connection, in seconds. Zero or
+	  not specified means wait indefinitely.
+	* sslcert - Cert file location. The file must contain PEM encoded data.
+	* sslkey - Key file location. The file must contain PEM encoded data.
+	* sslrootcert - The location of the root certificate file. The file
+	  must contain PEM encoded data.
+
+Valid values for sslmode are:
+
+	* disable - No SSL
+	* require - Always SSL (skip verification)
+	* verify-ca - Always SSL (verify that the certificate presented by the
+	  server was signed by a trusted CA)
+	* verify-full - Always SSL (verify that the certification presented by
+	  the server was signed by a trusted CA and the server host name
+	  matches the one in the certificate)
+
+See http://www.postgresql.org/docs/current/static/libpq-connect.html#LIBPQ-CONNSTRING
+for more information about connection string parameters.
+
+Use single quotes for values that contain whitespace:
+
+    "user=pqgotest password='with spaces'"
+
+A backslash will escape the next character in values:
+
+    "user=space\ man password='it\'s valid'"
+
+Note that the connection parameter client_encoding (which sets the
+text encoding for the connection) may be set but must be "UTF8",
+matching with the same rules as Postgres. It is an error to provide
+any other value.
+
+In addition to the parameters listed above, any run-time parameter that can be
+set at backend start time can be set in the connection string.  For more
+information, see
+http://www.postgresql.org/docs/current/static/runtime-config.html.
+
+Most environment variables as specified at http://www.postgresql.org/docs/current/static/libpq-envars.html
+supported by libpq are also supported by pq.  If any of the environment
+variables not supported by pq are set, pq will panic during connection
+establishment.  Environment variables have a lower precedence than explicitly
+provided connection parameters.
+
+The pgpass mechanism as described in http://www.postgresql.org/docs/current/static/libpq-pgpass.html
+is supported, but on Windows PGPASSFILE must be specified explicitly.
+
+
+Queries
+
+
+database/sql does not dictate any specific format for parameter
+markers in query strings, and pq uses the Postgres-native ordinal markers,
+as shown above. The same marker can be reused for the same parameter:
+
+	rows, err := db.Query(`SELECT name FROM users WHERE favorite_fruit = $1
+		OR age BETWEEN $2 AND $2 + 3`, "orange", 64)
+
+pq does not support the LastInsertId() method of the Result type in database/sql.
+To return the identifier of an INSERT (or UPDATE or DELETE), use the Postgres
+RETURNING clause with a standard Query or QueryRow call:
+
+	var userid int
+	err := db.QueryRow(`INSERT INTO users(name, favorite_fruit, age)
+		VALUES('beatrice', 'starfruit', 93) RETURNING id`).Scan(&userid)
+
+For more details on RETURNING, see the Postgres documentation:
+
+	http://www.postgresql.org/docs/current/static/sql-insert.html
+	http://www.postgresql.org/docs/current/static/sql-update.html
+	http://www.postgresql.org/docs/current/static/sql-delete.html
+
+For additional instructions on querying see the documentation for the database/sql package.
+
+
+Data Types
+
+
+Parameters pass through driver.DefaultParameterConverter before they are handled
+by this package. When the binary_parameters connection option is enabled,
+[]byte values are sent directly to the backend as data in binary format.
+
+This package returns the following types for values from the PostgreSQL backend:
+
+	- integer types smallint, integer, and bigint are returned as int64
+	- floating-point types real and double precision are returned as float64
+	- character types char, varchar, and text are returned as string
+	- temporal types date, time, timetz, timestamp, and timestamptz are
+	  returned as time.Time
+	- the boolean type is returned as bool
+	- the bytea type is returned as []byte
+
+All other types are returned directly from the backend as []byte values in text format.
+
+
+Errors
+
+
+pq may return errors of type *pq.Error which can be interrogated for error details:
+
+        if err, ok := err.(*pq.Error); ok {
+            fmt.Println("pq error:", err.Code.Name())
+        }
+
+See the pq.Error type for details.
+
+
+Bulk imports
+
+You can perform bulk imports by preparing a statement returned by pq.CopyIn (or
+pq.CopyInSchema) in an explicit transaction (sql.Tx). The returned statement
+handle can then be repeatedly "executed" to copy data into the target table.
+After all data has been processed you should call Exec() once with no arguments
+to flush all buffered data. Any call to Exec() might return an error which
+should be handled appropriately, but because of the internal buffering an error
+returned by Exec() might not be related to the data passed in the call that
+failed.
+
+CopyIn uses COPY FROM internally. It is not possible to COPY outside of an
+explicit transaction in pq.
+
+Usage example:
+
+	txn, err := db.Begin()
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	stmt, err := txn.Prepare(pq.CopyIn("users", "name", "age"))
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	for _, user := range users {
+		_, err = stmt.Exec(user.Name, int64(user.Age))
+		if err != nil {
+			log.Fatal(err)
+		}
+	}
+
+	_, err = stmt.Exec()
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	err = stmt.Close()
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	err = txn.Commit()
+	if err != nil {
+		log.Fatal(err)
+	}
+
+
+Notifications
+
+
+PostgreSQL supports a simple publish/subscribe model over database
+connections.  See http://www.postgresql.org/docs/current/static/sql-notify.html
+for more information about the general mechanism.
+
+To start listening for notifications, you first have to open a new connection
+to the database by calling NewListener.  This connection can not be used for
+anything other than LISTEN / NOTIFY.  Calling Listen will open a "notification
+channel"; once a notification channel is open, a notification generated on that
+channel will effect a send on the Listener.Notify channel.  A notification
+channel will remain open until Unlisten is called, though connection loss might
+result in some notifications being lost.  To solve this problem, Listener sends
+a nil pointer over the Notify channel any time the connection is re-established
+following a connection loss.  The application can get information about the
+state of the underlying connection by setting an event callback in the call to
+NewListener.
+
+A single Listener can safely be used from concurrent goroutines, which means
+that there is often no need to create more than one Listener in your
+application.  However, a Listener is always connected to a single database, so
+you will need to create a new Listener instance for every database you want to
+receive notifications in.
+
+The channel name in both Listen and Unlisten is case sensitive, and can contain
+any characters legal in an identifier (see
+http://www.postgresql.org/docs/current/static/sql-syntax-lexical.html#SQL-SYNTAX-IDENTIFIERS
+for more information).  Note that the channel name will be truncated to 63
+bytes by the PostgreSQL server.
+
+You can find a complete, working example of Listener usage at
+https://godoc.org/github.com/lib/pq/example/listen.
+
+
+Kerberos Support
+
+
+If you need support for Kerberos authentication, add the following to your main
+package:
+
+	import "github.com/lib/pq/auth/kerberos"
+
+	func init() {
+		pq.RegisterGSSProvider(func() (pq.Gss, error) { return kerberos.NewGSS() })
+	}
+
+This package is in a separate module so that users who don't need Kerberos
+don't have to download unnecessary dependencies.
+
+When imported, additional connection string parameters are supported:
+
+	* krbsrvname - GSS (Kerberos) service name when constructing the
+	  SPN (default is `postgres`). This will be combined with the host
+	  to form the full SPN: `krbsrvname/host`.
+	* krbspn - GSS (Kerberos) SPN. This takes priority over
+	  `krbsrvname` if present.
+*/
+package pq

third_party/highgo-pq/encode.go

@@ -0,0 +1,632 @@
+package pq
+
+import (
+	"bytes"
+	"database/sql/driver"
+	"encoding/binary"
+	"encoding/hex"
+	"errors"
+	"fmt"
+	"math"
+	"regexp"
+	"strconv"
+	"strings"
+	"sync"
+	"time"
+
+	"github.com/lib/pq/oid"
+)
+
+var time2400Regex = regexp.MustCompile(`^(24:00(?::00(?:\.0+)?)?)(?:[Z+-].*)?$`)
+
+func binaryEncode(parameterStatus *parameterStatus, x interface{}) []byte {
+	switch v := x.(type) {
+	case []byte:
+		return v
+	default:
+		return encode(parameterStatus, x, oid.T_unknown)
+	}
+}
+
+func encode(parameterStatus *parameterStatus, x interface{}, pgtypOid oid.Oid) []byte {
+	switch v := x.(type) {
+	case int64:
+		return strconv.AppendInt(nil, v, 10)
+	case float64:
+		return strconv.AppendFloat(nil, v, 'f', -1, 64)
+	case []byte:
+		if pgtypOid == oid.T_bytea {
+			return encodeBytea(parameterStatus.serverVersion, v)
+		}
+
+		return v
+	case string:
+		if pgtypOid == oid.T_bytea {
+			return encodeBytea(parameterStatus.serverVersion, []byte(v))
+		}
+
+		return []byte(v)
+	case bool:
+		return strconv.AppendBool(nil, v)
+	case time.Time:
+		return formatTs(v)
+
+	default:
+		errorf("encode: unknown type for %T", v)
+	}
+
+	panic("not reached")
+}
+
+func decode(parameterStatus *parameterStatus, s []byte, typ oid.Oid, f format) interface{} {
+	switch f {
+	case formatBinary:
+		return binaryDecode(parameterStatus, s, typ)
+	case formatText:
+		return textDecode(parameterStatus, s, typ)
+	default:
+		panic("not reached")
+	}
+}
+
+func binaryDecode(parameterStatus *parameterStatus, s []byte, typ oid.Oid) interface{} {
+	switch typ {
+	case oid.T_bytea:
+		return s
+	case oid.T_int8:
+		return int64(binary.BigEndian.Uint64(s))
+	case oid.T_int4:
+		return int64(int32(binary.BigEndian.Uint32(s)))
+	case oid.T_int2:
+		return int64(int16(binary.BigEndian.Uint16(s)))
+	case oid.T_uuid:
+		b, err := decodeUUIDBinary(s)
+		if err != nil {
+			panic(err)
+		}
+		return b
+
+	default:
+		errorf("don't know how to decode binary parameter of type %d", uint32(typ))
+	}
+
+	panic("not reached")
+}
+
+func textDecode(parameterStatus *parameterStatus, s []byte, typ oid.Oid) interface{} {
+	switch typ {
+	case oid.T_char, oid.T_varchar, oid.T_text, oid.T_refcursor, oid.T__refcursor:
+		return string(s)
+	case oid.T_bytea:
+		b, err := parseBytea(s)
+		if err != nil {
+			errorf("%s", err)
+		}
+		return b
+	case oid.T_timestamptz:
+		return parseTs(parameterStatus.currentLocation, string(s))
+	case oid.T_timestamp, oid.T_date:
+		return parseTs(nil, string(s))
+	case oid.T_time:
+		return mustParse("15:04:05", typ, s)
+	case oid.T_timetz:
+		return mustParse("15:04:05-07", typ, s)
+	case oid.T_bool:
+		return s[0] == 't'
+	case oid.T_int8, oid.T_int4, oid.T_int2:
+		i, err := strconv.ParseInt(string(s), 10, 64)
+		if err != nil {
+			errorf("%s", err)
+		}
+		return i
+	case oid.T_float4, oid.T_float8, oid.T_numeric:
+		// We always use 64 bit parsing, regardless of whether the input text is for
+		// a float4 or float8, because clients expect float64s for all float datatypes
+		// and returning a 32-bit parsed float64 produces lossy results.
+		f, err := strconv.ParseFloat(string(s), 64)
+		if err != nil {
+			errorf("%s", err)
+		}
+		return f
+	}
+
+	return s
+}
+
+// appendEncodedText encodes item in text format as required by COPY
+// and appends to buf
+func appendEncodedText(parameterStatus *parameterStatus, buf []byte, x interface{}) []byte {
+	switch v := x.(type) {
+	case int64:
+		return strconv.AppendInt(buf, v, 10)
+	case float64:
+		return strconv.AppendFloat(buf, v, 'f', -1, 64)
+	case []byte:
+		encodedBytea := encodeBytea(parameterStatus.serverVersion, v)
+		return appendEscapedText(buf, string(encodedBytea))
+	case string:
+		return appendEscapedText(buf, v)
+	case bool:
+		return strconv.AppendBool(buf, v)
+	case time.Time:
+		return append(buf, formatTs(v)...)
+	case nil:
+		return append(buf, "\\N"...)
+	default:
+		errorf("encode: unknown type for %T", v)
+	}
+
+	panic("not reached")
+}
+
+func appendEscapedText(buf []byte, text string) []byte {
+	escapeNeeded := false
+	startPos := 0
+	var c byte
+
+	// check if we need to escape
+	for i := 0; i < len(text); i++ {
+		c = text[i]
+		if c == '\\' || c == '\n' || c == '\r' || c == '\t' {
+			escapeNeeded = true
+			startPos = i
+			break
+		}
+	}
+	if !escapeNeeded {
+		return append(buf, text...)
+	}
+
+	// copy till first char to escape, iterate the rest
+	result := append(buf, text[:startPos]...)
+	for i := startPos; i < len(text); i++ {
+		c = text[i]
+		switch c {
+		case '\\':
+			result = append(result, '\\', '\\')
+		case '\n':
+			result = append(result, '\\', 'n')
+		case '\r':
+			result = append(result, '\\', 'r')
+		case '\t':
+			result = append(result, '\\', 't')
+		default:
+			result = append(result, c)
+		}
+	}
+	return result
+}
+
+func mustParse(f string, typ oid.Oid, s []byte) time.Time {
+	str := string(s)
+
+	// Check for a minute and second offset in the timezone.
+	if typ == oid.T_timestamptz || typ == oid.T_timetz {
+		for i := 3; i <= 6; i += 3 {
+			if str[len(str)-i] == ':' {
+				f += ":00"
+				continue
+			}
+			break
+		}
+	}
+
+	// Special case for 24:00 time.
+	// Unfortunately, golang does not parse 24:00 as a proper time.
+	// In this case, we want to try "round to the next day", to differentiate.
+	// As such, we find if the 24:00 time matches at the beginning; if so,
+	// we default it back to 00:00 but add a day later.
+	var is2400Time bool
+	switch typ {
+	case oid.T_timetz, oid.T_time:
+		if matches := time2400Regex.FindStringSubmatch(str); matches != nil {
+			// Concatenate timezone information at the back.
+			str = "00:00:00" + str[len(matches[1]):]
+			is2400Time = true
+		}
+	}
+	t, err := time.Parse(f, str)
+	if err != nil {
+		errorf("decode: %s", err)
+	}
+	if is2400Time {
+		t = t.Add(24 * time.Hour)
+	}
+	return t
+}
+
+var errInvalidTimestamp = errors.New("invalid timestamp")
+
+type timestampParser struct {
+	err error
+}
+
+func (p *timestampParser) expect(str string, char byte, pos int) {
+	if p.err != nil {
+		return
+	}
+	if pos+1 > len(str) {
+		p.err = errInvalidTimestamp
+		return
+	}
+	if c := str[pos]; c != char && p.err == nil {
+		p.err = fmt.Errorf("expected '%v' at position %v; got '%v'", char, pos, c)
+	}
+}
+
+func (p *timestampParser) mustAtoi(str string, begin int, end int) int {
+	if p.err != nil {
+		return 0
+	}
+	if begin < 0 || end < 0 || begin > end || end > len(str) {
+		p.err = errInvalidTimestamp
+		return 0
+	}
+	result, err := strconv.Atoi(str[begin:end])
+	if err != nil {
+		if p.err == nil {
+			p.err = fmt.Errorf("expected number; got '%v'", str)
+		}
+		return 0
+	}
+	return result
+}
+
+// The location cache caches the time zones typically used by the client.
+type locationCache struct {
+	cache map[int]*time.Location
+	lock  sync.Mutex
+}
+
+// All connections share the same list of timezones. Benchmarking shows that
+// about 5% speed could be gained by putting the cache in the connection and
+// losing the mutex, at the cost of a small amount of memory and a somewhat
+// significant increase in code complexity.
+var globalLocationCache = newLocationCache()
+
+func newLocationCache() *locationCache {
+	return &locationCache{cache: make(map[int]*time.Location)}
+}
+
+// Returns the cached timezone for the specified offset, creating and caching
+// it if necessary.
+func (c *locationCache) getLocation(offset int) *time.Location {
+	c.lock.Lock()
+	defer c.lock.Unlock()
+
+	location, ok := c.cache[offset]
+	if !ok {
+		location = time.FixedZone("", offset)
+		c.cache[offset] = location
+	}
+
+	return location
+}
+
+var infinityTsEnabled = false
+var infinityTsNegative time.Time
+var infinityTsPositive time.Time
+
+const (
+	infinityTsEnabledAlready        = "pq: infinity timestamp enabled already"
+	infinityTsNegativeMustBeSmaller = "pq: infinity timestamp: negative value must be smaller (before) than positive"
+)
+
+// EnableInfinityTs controls the handling of Postgres' "-infinity" and
+// "infinity" "timestamp"s.
+//
+// If EnableInfinityTs is not called, "-infinity" and "infinity" will return
+// []byte("-infinity") and []byte("infinity") respectively, and potentially
+// cause error "sql: Scan error on column index 0: unsupported driver -> Scan
+// pair: []uint8 -> *time.Time", when scanning into a time.Time value.
+//
+// Once EnableInfinityTs has been called, all connections created using this
+// driver will decode Postgres' "-infinity" and "infinity" for "timestamp",
+// "timestamp with time zone" and "date" types to the predefined minimum and
+// maximum times, respectively.  When encoding time.Time values, any time which
+// equals or precedes the predefined minimum time will be encoded to
+// "-infinity".  Any values at or past the maximum time will similarly be
+// encoded to "infinity".
+//
+// If EnableInfinityTs is called with negative >= positive, it will panic.
+// Calling EnableInfinityTs after a connection has been established results in
+// undefined behavior.  If EnableInfinityTs is called more than once, it will
+// panic.
+func EnableInfinityTs(negative time.Time, positive time.Time) {
+	if infinityTsEnabled {
+		panic(infinityTsEnabledAlready)
+	}
+	if !negative.Before(positive) {
+		panic(infinityTsNegativeMustBeSmaller)
+	}
+	infinityTsEnabled = true
+	infinityTsNegative = negative
+	infinityTsPositive = positive
+}
+
+/*
+ * Testing might want to toggle infinityTsEnabled
+ */
+func disableInfinityTs() {
+	infinityTsEnabled = false
+}
+
+// This is a time function specific to the Postgres default DateStyle
+// setting ("ISO, MDY"), the only one we currently support. This
+// accounts for the discrepancies between the parsing available with
+// time.Parse and the Postgres date formatting quirks.
+func parseTs(currentLocation *time.Location, str string) interface{} {
+	switch str {
+	case "-infinity":
+		if infinityTsEnabled {
+			return infinityTsNegative
+		}
+		return []byte(str)
+	case "infinity":
+		if infinityTsEnabled {
+			return infinityTsPositive
+		}
+		return []byte(str)
+	}
+	t, err := ParseTimestamp(currentLocation, str)
+	if err != nil {
+		panic(err)
+	}
+	return t
+}
+
+// ParseTimestamp parses Postgres' text format. It returns a time.Time in
+// currentLocation iff that time's offset agrees with the offset sent from the
+// Postgres server. Otherwise, ParseTimestamp returns a time.Time with the
+// fixed offset offset provided by the Postgres server.
+func ParseTimestamp(currentLocation *time.Location, str string) (time.Time, error) {
+	p := timestampParser{}
+
+	monSep := strings.IndexRune(str, '-')
+	// this is Gregorian year, not ISO Year
+	// In Gregorian system, the year 1 BC is followed by AD 1
+	year := p.mustAtoi(str, 0, monSep)
+	daySep := monSep + 3
+	month := p.mustAtoi(str, monSep+1, daySep)
+	p.expect(str, '-', daySep)
+	timeSep := daySep + 3
+	day := p.mustAtoi(str, daySep+1, timeSep)
+
+	minLen := monSep + len("01-01") + 1
+
+	isBC := strings.HasSuffix(str, " BC")
+	if isBC {
+		minLen += 3
+	}
+
+	var hour, minute, second int
+	if len(str) > minLen {
+		p.expect(str, ' ', timeSep)
+		minSep := timeSep + 3
+		p.expect(str, ':', minSep)
+		hour = p.mustAtoi(str, timeSep+1, minSep)
+		secSep := minSep + 3
+		p.expect(str, ':', secSep)
+		minute = p.mustAtoi(str, minSep+1, secSep)
+		secEnd := secSep + 3
+		second = p.mustAtoi(str, secSep+1, secEnd)
+	}
+	remainderIdx := monSep + len("01-01 00:00:00") + 1
+	// Three optional (but ordered) sections follow: the
+	// fractional seconds, the time zone offset, and the BC
+	// designation. We set them up here and adjust the other
+	// offsets if the preceding sections exist.
+
+	nanoSec := 0
+	tzOff := 0
+
+	if remainderIdx < len(str) && str[remainderIdx] == '.' {
+		fracStart := remainderIdx + 1
+		fracOff := strings.IndexAny(str[fracStart:], "-+Z ")
+		if fracOff < 0 {
+			fracOff = len(str) - fracStart
+		}
+		fracSec := p.mustAtoi(str, fracStart, fracStart+fracOff)
+		nanoSec = fracSec * (1000000000 / int(math.Pow(10, float64(fracOff))))
+
+		remainderIdx += fracOff + 1
+	}
+	if tzStart := remainderIdx; tzStart < len(str) && (str[tzStart] == '-' || str[tzStart] == '+') {
+		// time zone separator is always '-' or '+' or 'Z' (UTC is +00)
+		var tzSign int
+		switch c := str[tzStart]; c {
+		case '-':
+			tzSign = -1
+		case '+':
+			tzSign = +1
+		default:
+			return time.Time{}, fmt.Errorf("expected '-' or '+' at position %v; got %v", tzStart, c)
+		}
+		tzHours := p.mustAtoi(str, tzStart+1, tzStart+3)
+		remainderIdx += 3
+		var tzMin, tzSec int
+		if remainderIdx < len(str) && str[remainderIdx] == ':' {
+			tzMin = p.mustAtoi(str, remainderIdx+1, remainderIdx+3)
+			remainderIdx += 3
+		}
+		if remainderIdx < len(str) && str[remainderIdx] == ':' {
+			tzSec = p.mustAtoi(str, remainderIdx+1, remainderIdx+3)
+			remainderIdx += 3
+		}
+		tzOff = tzSign * ((tzHours * 60 * 60) + (tzMin * 60) + tzSec)
+	} else if tzStart < len(str) && str[tzStart] == 'Z' {
+		// time zone Z separator indicates UTC is +00
+		remainderIdx += 1
+	}
+
+	var isoYear int
+
+	if isBC {
+		isoYear = 1 - year
+		remainderIdx += 3
+	} else {
+		isoYear = year
+	}
+	if remainderIdx < len(str) {
+		return time.Time{}, fmt.Errorf("expected end of input, got %v", str[remainderIdx:])
+	}
+	t := time.Date(isoYear, time.Month(month), day,
+		hour, minute, second, nanoSec,
+		globalLocationCache.getLocation(tzOff))
+
+	if currentLocation != nil {
+		// Set the location of the returned Time based on the session's
+		// TimeZone value, but only if the local time zone database agrees with
+		// the remote database on the offset.
+		lt := t.In(currentLocation)
+		_, newOff := lt.Zone()
+		if newOff == tzOff {
+			t = lt
+		}
+	}
+
+	return t, p.err
+}
+
+// formatTs formats t into a format postgres understands.
+func formatTs(t time.Time) []byte {
+	if infinityTsEnabled {
+		// t <= -infinity : ! (t > -infinity)
+		if !t.After(infinityTsNegative) {
+			return []byte("-infinity")
+		}
+		// t >= infinity : ! (!t < infinity)
+		if !t.Before(infinityTsPositive) {
+			return []byte("infinity")
+		}
+	}
+	return FormatTimestamp(t)
+}
+
+// FormatTimestamp formats t into Postgres' text format for timestamps.
+func FormatTimestamp(t time.Time) []byte {
+	// Need to send dates before 0001 A.D. with " BC" suffix, instead of the
+	// minus sign preferred by Go.
+	// Beware, "0000" in ISO is "1 BC", "-0001" is "2 BC" and so on
+	bc := false
+	if t.Year() <= 0 {
+		// flip year sign, and add 1, e.g: "0" will be "1", and "-10" will be "11"
+		t = t.AddDate((-t.Year())*2+1, 0, 0)
+		bc = true
+	}
+	b := []byte(t.Format("2006-01-02 15:04:05.999999999Z07:00"))
+
+	_, offset := t.Zone()
+	offset %= 60
+	if offset != 0 {
+		// RFC3339Nano already printed the minus sign
+		if offset < 0 {
+			offset = -offset
+		}
+
+		b = append(b, ':')
+		if offset < 10 {
+			b = append(b, '0')
+		}
+		b = strconv.AppendInt(b, int64(offset), 10)
+	}
+
+	if bc {
+		b = append(b, " BC"...)
+	}
+	return b
+}
+
+// Parse a bytea value received from the server.  Both "hex" and the legacy
+// "escape" format are supported.
+func parseBytea(s []byte) (result []byte, err error) {
+	if len(s) >= 2 && bytes.Equal(s[:2], []byte("\\x")) {
+		// bytea_output = hex
+		s = s[2:] // trim off leading "\\x"
+		result = make([]byte, hex.DecodedLen(len(s)))
+		_, err := hex.Decode(result, s)
+		if err != nil {
+			return nil, err
+		}
+	} else {
+		// bytea_output = escape
+		for len(s) > 0 {
+			if s[0] == '\\' {
+				// escaped '\\'
+				if len(s) >= 2 && s[1] == '\\' {
+					result = append(result, '\\')
+					s = s[2:]
+					continue
+				}
+
+				// '\\' followed by an octal number
+				if len(s) < 4 {
+					return nil, fmt.Errorf("invalid bytea sequence %v", s)
+				}
+				r, err := strconv.ParseUint(string(s[1:4]), 8, 8)
+				if err != nil {
+					return nil, fmt.Errorf("could not parse bytea value: %s", err.Error())
+				}
+				result = append(result, byte(r))
+				s = s[4:]
+			} else {
+				// We hit an unescaped, raw byte.  Try to read in as many as
+				// possible in one go.
+				i := bytes.IndexByte(s, '\\')
+				if i == -1 {
+					result = append(result, s...)
+					break
+				}
+				result = append(result, s[:i]...)
+				s = s[i:]
+			}
+		}
+	}
+
+	return result, nil
+}
+
+func encodeBytea(serverVersion int, v []byte) (result []byte) {
+	if serverVersion >= 90000 {
+		// Use the hex format if we know that the server supports it
+		result = make([]byte, 2+hex.EncodedLen(len(v)))
+		result[0] = '\\'
+		result[1] = 'x'
+		hex.Encode(result[2:], v)
+	} else {
+		// .. or resort to "escape"
+		for _, b := range v {
+			if b == '\\' {
+				result = append(result, '\\', '\\')
+			} else if b < 0x20 || b > 0x7e {
+				result = append(result, []byte(fmt.Sprintf("\\%03o", b))...)
+			} else {
+				result = append(result, b)
+			}
+		}
+	}
+
+	return result
+}
+
+// NullTime represents a time.Time that may be null. NullTime implements the
+// sql.Scanner interface so it can be used as a scan destination, similar to
+// sql.NullString.
+type NullTime struct {
+	Time  time.Time
+	Valid bool // Valid is true if Time is not NULL
+}
+
+// Scan implements the Scanner interface.
+func (nt *NullTime) Scan(value interface{}) error {
+	nt.Time, nt.Valid = value.(time.Time)
+	return nil
+}
+
+// Value implements the driver Valuer interface.
+func (nt NullTime) Value() (driver.Value, error) {
+	if !nt.Valid {
+		return nil, nil
+	}
+	return nt.Time, nil
+}

third_party/highgo-pq/encode_test.go

@@ -0,0 +1,886 @@
+package pq
+
+import (
+	"bytes"
+	"database/sql"
+	"fmt"
+	"regexp"
+	"testing"
+	"time"
+
+	"github.com/lib/pq/oid"
+)
+
+func TestScanTimestamp(t *testing.T) {
+	var nt NullTime
+	tn := time.Now()
+	nt.Scan(tn)
+	if !nt.Valid {
+		t.Errorf("Expected Valid=false")
+	}
+	if nt.Time != tn {
+		t.Errorf("Time value mismatch")
+	}
+}
+
+func TestScanNilTimestamp(t *testing.T) {
+	var nt NullTime
+	nt.Scan(nil)
+	if nt.Valid {
+		t.Errorf("Expected Valid=false")
+	}
+}
+
+var timeTests = []struct {
+	str     string
+	timeval time.Time
+}{
+	{"22001-02-03", time.Date(22001, time.February, 3, 0, 0, 0, 0, time.FixedZone("", 0))},
+	{"2001-02-03", time.Date(2001, time.February, 3, 0, 0, 0, 0, time.FixedZone("", 0))},
+	{"0001-12-31 BC", time.Date(0, time.December, 31, 0, 0, 0, 0, time.FixedZone("", 0))},
+	{"2001-02-03 BC", time.Date(-2000, time.February, 3, 0, 0, 0, 0, time.FixedZone("", 0))},
+	{"2001-02-03 04:05:06", time.Date(2001, time.February, 3, 4, 5, 6, 0, time.FixedZone("", 0))},
+	{"2001-02-03 04:05:06.000001", time.Date(2001, time.February, 3, 4, 5, 6, 1000, time.FixedZone("", 0))},
+	{"2001-02-03 04:05:06.00001", time.Date(2001, time.February, 3, 4, 5, 6, 10000, time.FixedZone("", 0))},
+	{"2001-02-03 04:05:06.0001", time.Date(2001, time.February, 3, 4, 5, 6, 100000, time.FixedZone("", 0))},
+	{"2001-02-03 04:05:06.001", time.Date(2001, time.February, 3, 4, 5, 6, 1000000, time.FixedZone("", 0))},
+	{"2001-02-03 04:05:06.01", time.Date(2001, time.February, 3, 4, 5, 6, 10000000, time.FixedZone("", 0))},
+	{"2001-02-03 04:05:06.1", time.Date(2001, time.February, 3, 4, 5, 6, 100000000, time.FixedZone("", 0))},
+	{"2001-02-03 04:05:06.12", time.Date(2001, time.February, 3, 4, 5, 6, 120000000, time.FixedZone("", 0))},
+	{"2001-02-03 04:05:06.123", time.Date(2001, time.February, 3, 4, 5, 6, 123000000, time.FixedZone("", 0))},
+	{"2001-02-03 04:05:06.1234", time.Date(2001, time.February, 3, 4, 5, 6, 123400000, time.FixedZone("", 0))},
+	{"2001-02-03 04:05:06.12345", time.Date(2001, time.February, 3, 4, 5, 6, 123450000, time.FixedZone("", 0))},
+	{"2001-02-03 04:05:06.123456", time.Date(2001, time.February, 3, 4, 5, 6, 123456000, time.FixedZone("", 0))},
+	{"2001-02-03 04:05:06.123-07", time.Date(2001, time.February, 3, 4, 5, 6, 123000000,
+		time.FixedZone("", -7*60*60))},
+	{"2001-02-03 04:05:06-07", time.Date(2001, time.February, 3, 4, 5, 6, 0,
+		time.FixedZone("", -7*60*60))},
+	{"2001-02-03 04:05:06-07:42", time.Date(2001, time.February, 3, 4, 5, 6, 0,
+		time.FixedZone("", -(7*60*60+42*60)))},
+	{"2001-02-03 04:05:06-07:30:09", time.Date(2001, time.February, 3, 4, 5, 6, 0,
+		time.FixedZone("", -(7*60*60+30*60+9)))},
+	{"2001-02-03 04:05:06+07:30:09", time.Date(2001, time.February, 3, 4, 5, 6, 0,
+		time.FixedZone("", +(7*60*60+30*60+9)))},
+	{"2001-02-03 04:05:06+07", time.Date(2001, time.February, 3, 4, 5, 6, 0,
+		time.FixedZone("", 7*60*60))},
+	{"0011-02-03 04:05:06 BC", time.Date(-10, time.February, 3, 4, 5, 6, 0, time.FixedZone("", 0))},
+	{"0011-02-03 04:05:06.123 BC", time.Date(-10, time.February, 3, 4, 5, 6, 123000000, time.FixedZone("", 0))},
+	{"0011-02-03 04:05:06.123-07 BC", time.Date(-10, time.February, 3, 4, 5, 6, 123000000,
+		time.FixedZone("", -7*60*60))},
+	{"0001-02-03 04:05:06.123", time.Date(1, time.February, 3, 4, 5, 6, 123000000, time.FixedZone("", 0))},
+	{"0001-02-03 04:05:06.123 BC", time.Date(1, time.February, 3, 4, 5, 6, 123000000, time.FixedZone("", 0)).AddDate(-1, 0, 0)},
+	{"0001-02-03 04:05:06.123 BC", time.Date(0, time.February, 3, 4, 5, 6, 123000000, time.FixedZone("", 0))},
+	{"0002-02-03 04:05:06.123 BC", time.Date(0, time.February, 3, 4, 5, 6, 123000000, time.FixedZone("", 0)).AddDate(-1, 0, 0)},
+	{"0002-02-03 04:05:06.123 BC", time.Date(-1, time.February, 3, 4, 5, 6, 123000000, time.FixedZone("", 0))},
+	{"12345-02-03 04:05:06.1", time.Date(12345, time.February, 3, 4, 5, 6, 100000000, time.FixedZone("", 0))},
+	{"123456-02-03 04:05:06.1", time.Date(123456, time.February, 3, 4, 5, 6, 100000000, time.FixedZone("", 0))},
+}
+
+// Test that parsing the string results in the expected value.
+func TestParseTs(t *testing.T) {
+	for i, tt := range timeTests {
+		val, err := ParseTimestamp(nil, tt.str)
+		if err != nil {
+			t.Errorf("%d: got error: %v", i, err)
+		} else if val.String() != tt.timeval.String() {
+			t.Errorf("%d: expected to parse %q into %q; got %q",
+				i, tt.str, tt.timeval, val)
+		}
+	}
+}
+
+var timeErrorTests = []string{
+	"BC",
+	" BC",
+	"2001",
+	"2001-2-03",
+	"2001-02-3",
+	"2001-02-03 ",
+	"2001-02-03 B",
+	"2001-02-03 04",
+	"2001-02-03 04:",
+	"2001-02-03 04:05",
+	"2001-02-03 04:05 B",
+	"2001-02-03 04:05 BC",
+	"2001-02-03 04:05:",
+	"2001-02-03 04:05:6",
+	"2001-02-03 04:05:06 B",
+	"2001-02-03 04:05:06BC",
+	"2001-02-03 04:05:06.123 B",
+}
+
+// Test that parsing the string results in an error.
+func TestParseTsErrors(t *testing.T) {
+	for i, tt := range timeErrorTests {
+		_, err := ParseTimestamp(nil, tt)
+		if err == nil {
+			t.Errorf("%d: expected an error from parsing: %v", i, tt)
+		}
+	}
+}
+
+// Now test that sending the value into the database and parsing it back
+// returns the same time.Time value.
+func TestEncodeAndParseTs(t *testing.T) {
+	db, err := openTestConnConninfo("timezone='Etc/UTC'")
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer db.Close()
+
+	for i, tt := range timeTests {
+		var dbstr string
+		err = db.QueryRow("SELECT ($1::timestamptz)::text", tt.timeval).Scan(&dbstr)
+		if err != nil {
+			t.Errorf("%d: could not send value %q to the database: %s", i, tt.timeval, err)
+			continue
+		}
+
+		val, err := ParseTimestamp(nil, dbstr)
+		if err != nil {
+			t.Errorf("%d: could not parse value %q: %s", i, dbstr, err)
+			continue
+		}
+		val = val.In(tt.timeval.Location())
+		if val.String() != tt.timeval.String() {
+			t.Errorf("%d: expected to parse %q into %q; got %q", i, dbstr, tt.timeval, val)
+		}
+	}
+}
+
+var formatTimeTests = []struct {
+	time     time.Time
+	expected string
+}{
+	{time.Time{}, "0001-01-01 00:00:00Z"},
+	{time.Date(2001, time.February, 3, 4, 5, 6, 123456789, time.FixedZone("", 0)), "2001-02-03 04:05:06.123456789Z"},
+	{time.Date(2001, time.February, 3, 4, 5, 6, 123456789, time.FixedZone("", 2*60*60)), "2001-02-03 04:05:06.123456789+02:00"},
+	{time.Date(2001, time.February, 3, 4, 5, 6, 123456789, time.FixedZone("", -6*60*60)), "2001-02-03 04:05:06.123456789-06:00"},
+	{time.Date(2001, time.February, 3, 4, 5, 6, 0, time.FixedZone("", -(7*60*60+30*60+9))), "2001-02-03 04:05:06-07:30:09"},
+
+	{time.Date(1, time.February, 3, 4, 5, 6, 123456789, time.FixedZone("", 0)), "0001-02-03 04:05:06.123456789Z"},
+	{time.Date(1, time.February, 3, 4, 5, 6, 123456789, time.FixedZone("", 2*60*60)), "0001-02-03 04:05:06.123456789+02:00"},
+	{time.Date(1, time.February, 3, 4, 5, 6, 123456789, time.FixedZone("", -6*60*60)), "0001-02-03 04:05:06.123456789-06:00"},
+
+	{time.Date(0, time.February, 3, 4, 5, 6, 123456789, time.FixedZone("", 0)), "0001-02-03 04:05:06.123456789Z BC"},
+	{time.Date(0, time.February, 3, 4, 5, 6, 123456789, time.FixedZone("", 2*60*60)), "0001-02-03 04:05:06.123456789+02:00 BC"},
+	{time.Date(0, time.February, 3, 4, 5, 6, 123456789, time.FixedZone("", -6*60*60)), "0001-02-03 04:05:06.123456789-06:00 BC"},
+
+	{time.Date(1, time.February, 3, 4, 5, 6, 0, time.FixedZone("", -(7*60*60+30*60+9))), "0001-02-03 04:05:06-07:30:09"},
+	{time.Date(0, time.February, 3, 4, 5, 6, 0, time.FixedZone("", -(7*60*60+30*60+9))), "0001-02-03 04:05:06-07:30:09 BC"},
+}
+
+func TestFormatTs(t *testing.T) {
+	for i, tt := range formatTimeTests {
+		val := string(formatTs(tt.time))
+		if val != tt.expected {
+			t.Errorf("%d: incorrect time format %q, want %q", i, val, tt.expected)
+		}
+	}
+}
+
+func TestFormatTsBackend(t *testing.T) {
+	db := openTestConn(t)
+	defer db.Close()
+
+	var str string
+	err := db.QueryRow("SELECT '2001-02-03T04:05:06.007-08:09:10'::time::text").Scan(&str)
+	if err == nil {
+		t.Fatalf("PostgreSQL is accepting an ISO timestamp input for time")
+	}
+
+	for i, tt := range formatTimeTests {
+		for _, typ := range []string{"date", "time", "timetz", "timestamp", "timestamptz"} {
+			err = db.QueryRow("SELECT $1::"+typ+"::text", tt.time).Scan(&str)
+			if err != nil {
+				t.Errorf("%d: incorrect time format for %v on the backend: %v", i, typ, err)
+			}
+		}
+	}
+}
+
+func TestTimeWithoutTimezone(t *testing.T) {
+	db := openTestConn(t)
+	defer db.Close()
+
+	tx, err := db.Begin()
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer tx.Rollback()
+
+	for _, tc := range []struct {
+		refTime      string
+		expectedTime time.Time
+	}{
+		{"11:59:59", time.Date(0, 1, 1, 11, 59, 59, 0, time.UTC)},
+		{"24:00", time.Date(0, 1, 2, 0, 0, 0, 0, time.UTC)},
+		{"24:00:00", time.Date(0, 1, 2, 0, 0, 0, 0, time.UTC)},
+		{"24:00:00.0", time.Date(0, 1, 2, 0, 0, 0, 0, time.UTC)},
+		{"24:00:00.000000", time.Date(0, 1, 2, 0, 0, 0, 0, time.UTC)},
+	} {
+		t.Run(
+			fmt.Sprintf("%s => %s", tc.refTime, tc.expectedTime.Format(time.RFC3339)),
+			func(t *testing.T) {
+				var gotTime time.Time
+				row := tx.QueryRow("select $1::time", tc.refTime)
+				err = row.Scan(&gotTime)
+				if err != nil {
+					t.Fatal(err)
+				}
+
+				if !tc.expectedTime.Equal(gotTime) {
+					t.Errorf("timestamps not equal: %s != %s", tc.expectedTime, gotTime)
+				}
+			},
+		)
+	}
+}
+
+func TestTimeWithTimezone(t *testing.T) {
+	db := openTestConn(t)
+	defer db.Close()
+
+	tx, err := db.Begin()
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer tx.Rollback()
+
+	for _, tc := range []struct {
+		refTime      string
+		expectedTime time.Time
+	}{
+		{"11:59:59+00:00", time.Date(0, 1, 1, 11, 59, 59, 0, time.UTC)},
+		{"11:59:59+04:00", time.Date(0, 1, 1, 11, 59, 59, 0, time.FixedZone("+04", 4*60*60))},
+		{"11:59:59+04:01:02", time.Date(0, 1, 1, 11, 59, 59, 0, time.FixedZone("+04:01:02", 4*60*60+1*60+2))},
+		{"11:59:59-04:01:02", time.Date(0, 1, 1, 11, 59, 59, 0, time.FixedZone("-04:01:02", -(4*60*60+1*60+2)))},
+		{"24:00+00", time.Date(0, 1, 2, 0, 0, 0, 0, time.UTC)},
+		{"24:00Z", time.Date(0, 1, 2, 0, 0, 0, 0, time.UTC)},
+		{"24:00-04:00", time.Date(0, 1, 2, 0, 0, 0, 0, time.FixedZone("-04", -4*60*60))},
+		{"24:00:00+00", time.Date(0, 1, 2, 0, 0, 0, 0, time.UTC)},
+		{"24:00:00.0+00", time.Date(0, 1, 2, 0, 0, 0, 0, time.UTC)},
+		{"24:00:00.000000+00", time.Date(0, 1, 2, 0, 0, 0, 0, time.UTC)},
+	} {
+		t.Run(
+			fmt.Sprintf("%s => %s", tc.refTime, tc.expectedTime.Format(time.RFC3339)),
+			func(t *testing.T) {
+				var gotTime time.Time
+				row := tx.QueryRow("select $1::timetz", tc.refTime)
+				err = row.Scan(&gotTime)
+				if err != nil {
+					t.Fatal(err)
+				}
+
+				if !tc.expectedTime.Equal(gotTime) {
+					t.Errorf("timestamps not equal: %s != %s", tc.expectedTime, gotTime)
+				}
+			},
+		)
+	}
+}
+
+func TestTimestampWithTimeZone(t *testing.T) {
+	db := openTestConn(t)
+	defer db.Close()
+
+	tx, err := db.Begin()
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer tx.Rollback()
+
+	// try several different locations, all included in Go's zoneinfo.zip
+	for _, locName := range []string{
+		"UTC",
+		"America/Chicago",
+		"America/New_York",
+		"Australia/Darwin",
+		"Australia/Perth",
+	} {
+		loc, err := time.LoadLocation(locName)
+		if err != nil {
+			t.Logf("Could not load time zone %s - skipping", locName)
+			continue
+		}
+
+		// Postgres timestamps have a resolution of 1 microsecond, so don't
+		// use the full range of the Nanosecond argument
+		refTime := time.Date(2012, 11, 6, 10, 23, 42, 123456000, loc)
+
+		for _, pgTimeZone := range []string{"US/Eastern", "Australia/Darwin"} {
+			// Switch Postgres's timezone to test different output timestamp formats
+			_, err = tx.Exec(fmt.Sprintf("set time zone '%s'", pgTimeZone))
+			if err != nil {
+				t.Fatal(err)
+			}
+
+			var gotTime time.Time
+			row := tx.QueryRow("select $1::timestamp with time zone", refTime)
+			err = row.Scan(&gotTime)
+			if err != nil {
+				t.Fatal(err)
+			}
+
+			if !refTime.Equal(gotTime) {
+				t.Errorf("timestamps not equal: %s != %s", refTime, gotTime)
+			}
+
+			// check that the time zone is set correctly based on TimeZone
+			pgLoc, err := time.LoadLocation(pgTimeZone)
+			if err != nil {
+				t.Logf("Could not load time zone %s - skipping", pgLoc)
+				continue
+			}
+			translated := refTime.In(pgLoc)
+			if translated.String() != gotTime.String() {
+				t.Errorf("timestamps not equal: %s != %s", translated, gotTime)
+			}
+		}
+	}
+}
+
+func TestTimestampWithOutTimezone(t *testing.T) {
+	db := openTestConn(t)
+	defer db.Close()
+
+	test := func(ts, pgts string) {
+		r, err := db.Query("SELECT $1::timestamp", pgts)
+		if err != nil {
+			t.Fatalf("Could not run query: %v", err)
+		}
+
+		if !r.Next() {
+			t.Fatal("Expected at least one row")
+		}
+
+		var result time.Time
+		err = r.Scan(&result)
+		if err != nil {
+			t.Fatalf("Did not expect error scanning row: %v", err)
+		}
+
+		expected, err := time.Parse(time.RFC3339, ts)
+		if err != nil {
+			t.Fatalf("Could not parse test time literal: %v", err)
+		}
+
+		if !result.Equal(expected) {
+			t.Fatalf("Expected time to match %v: got mismatch %v",
+				expected, result)
+		}
+
+		if r.Next() {
+			t.Fatal("Expected only one row")
+		}
+	}
+
+	test("2000-01-01T00:00:00Z", "2000-01-01T00:00:00")
+
+	// Test higher precision time
+	test("2013-01-04T20:14:58.80033Z", "2013-01-04 20:14:58.80033")
+}
+
+func TestInfinityTimestamp(t *testing.T) {
+	db := openTestConn(t)
+	defer db.Close()
+	var err error
+	var resultT time.Time
+
+	expectedErrorStrRegexp := regexp.MustCompile(
+		`^sql: Scan error on column index 0(, name "timestamp(tz)?"|): unsupported`)
+
+	type testCases []struct {
+		Query                  string
+		Param                  string
+		ExpectedErrorStrRegexp *regexp.Regexp
+		ExpectedVal            interface{}
+	}
+	tc := testCases{
+		{"SELECT $1::timestamp", "-infinity", expectedErrorStrRegexp, "-infinity"},
+		{"SELECT $1::timestamptz", "-infinity", expectedErrorStrRegexp, "-infinity"},
+		{"SELECT $1::timestamp", "infinity", expectedErrorStrRegexp, "infinity"},
+		{"SELECT $1::timestamptz", "infinity", expectedErrorStrRegexp, "infinity"},
+	}
+	// try to assert []byte to time.Time
+	for _, q := range tc {
+		err = db.QueryRow(q.Query, q.Param).Scan(&resultT)
+		if err == nil || !q.ExpectedErrorStrRegexp.MatchString(err.Error()) {
+			t.Errorf("Scanning -/+infinity, expected error to match regexp %q, got %q",
+				q.ExpectedErrorStrRegexp, err)
+		}
+	}
+	// yield []byte
+	for _, q := range tc {
+		var resultI interface{}
+		err = db.QueryRow(q.Query, q.Param).Scan(&resultI)
+		if err != nil {
+			t.Errorf("Scanning -/+infinity, expected no error, got %q", err)
+		}
+		result, ok := resultI.([]byte)
+		if !ok {
+			t.Errorf("Scanning -/+infinity, expected []byte, got %#v", resultI)
+		}
+		if string(result) != q.ExpectedVal {
+			t.Errorf("Scanning -/+infinity, expected %q, got %q", q.ExpectedVal, result)
+		}
+	}
+
+	y1500 := time.Date(1500, time.January, 1, 0, 0, 0, 0, time.UTC)
+	y2500 := time.Date(2500, time.January, 1, 0, 0, 0, 0, time.UTC)
+	EnableInfinityTs(y1500, y2500)
+
+	err = db.QueryRow("SELECT $1::timestamp", "infinity").Scan(&resultT)
+	if err != nil {
+		t.Errorf("Scanning infinity, expected no error, got %q", err)
+	}
+	if !resultT.Equal(y2500) {
+		t.Errorf("Scanning infinity, expected %q, got %q", y2500, resultT)
+	}
+
+	err = db.QueryRow("SELECT $1::timestamptz", "infinity").Scan(&resultT)
+	if err != nil {
+		t.Errorf("Scanning infinity, expected no error, got %q", err)
+	}
+	if !resultT.Equal(y2500) {
+		t.Errorf("Scanning Infinity, expected time %q, got %q", y2500, resultT.String())
+	}
+
+	err = db.QueryRow("SELECT $1::timestamp", "-infinity").Scan(&resultT)
+	if err != nil {
+		t.Errorf("Scanning -infinity, expected no error, got %q", err)
+	}
+	if !resultT.Equal(y1500) {
+		t.Errorf("Scanning -infinity, expected time %q, got %q", y1500, resultT.String())
+	}
+
+	err = db.QueryRow("SELECT $1::timestamptz", "-infinity").Scan(&resultT)
+	if err != nil {
+		t.Errorf("Scanning -infinity, expected no error, got %q", err)
+	}
+	if !resultT.Equal(y1500) {
+		t.Errorf("Scanning -infinity, expected time %q, got %q", y1500, resultT.String())
+	}
+
+	ym1500 := time.Date(-1500, time.January, 1, 0, 0, 0, 0, time.UTC)
+	y11500 := time.Date(11500, time.January, 1, 0, 0, 0, 0, time.UTC)
+	var s string
+	err = db.QueryRow("SELECT $1::timestamp::text", ym1500).Scan(&s)
+	if err != nil {
+		t.Errorf("Encoding -infinity, expected no error, got %q", err)
+	}
+	if s != "-infinity" {
+		t.Errorf("Encoding -infinity, expected %q, got %q", "-infinity", s)
+	}
+	err = db.QueryRow("SELECT $1::timestamptz::text", ym1500).Scan(&s)
+	if err != nil {
+		t.Errorf("Encoding -infinity, expected no error, got %q", err)
+	}
+	if s != "-infinity" {
+		t.Errorf("Encoding -infinity, expected %q, got %q", "-infinity", s)
+	}
+
+	err = db.QueryRow("SELECT $1::timestamp::text", y11500).Scan(&s)
+	if err != nil {
+		t.Errorf("Encoding infinity, expected no error, got %q", err)
+	}
+	if s != "infinity" {
+		t.Errorf("Encoding infinity, expected %q, got %q", "infinity", s)
+	}
+	err = db.QueryRow("SELECT $1::timestamptz::text", y11500).Scan(&s)
+	if err != nil {
+		t.Errorf("Encoding infinity, expected no error, got %q", err)
+	}
+	if s != "infinity" {
+		t.Errorf("Encoding infinity, expected %q, got %q", "infinity", s)
+	}
+
+	disableInfinityTs()
+
+	var panicErrorString string
+	func() {
+		defer func() {
+			panicErrorString, _ = recover().(string)
+		}()
+		EnableInfinityTs(y2500, y1500)
+	}()
+	if panicErrorString != infinityTsNegativeMustBeSmaller {
+		t.Errorf("Expected error, %q, got %q", infinityTsNegativeMustBeSmaller, panicErrorString)
+	}
+}
+
+func TestStringWithNul(t *testing.T) {
+	db := openTestConn(t)
+	defer db.Close()
+
+	hello0world := string("hello\x00world")
+	_, err := db.Query("SELECT $1::text", &hello0world)
+	if err == nil {
+		t.Fatal("Postgres accepts a string with nul in it; " +
+			"injection attacks may be plausible")
+	}
+}
+
+func TestByteSliceToText(t *testing.T) {
+	db := openTestConn(t)
+	defer db.Close()
+
+	b := []byte("hello world")
+	row := db.QueryRow("SELECT $1::text", b)
+
+	var result []byte
+	err := row.Scan(&result)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	if string(result) != string(b) {
+		t.Fatalf("expected %v but got %v", b, result)
+	}
+}
+
+func TestStringToBytea(t *testing.T) {
+	db := openTestConn(t)
+	defer db.Close()
+
+	b := "hello world"
+	row := db.QueryRow("SELECT $1::bytea", b)
+
+	var result []byte
+	err := row.Scan(&result)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	if !bytes.Equal(result, []byte(b)) {
+		t.Fatalf("expected %v but got %v", b, result)
+	}
+}
+
+func TestTextByteSliceToUUID(t *testing.T) {
+	db := openTestConn(t)
+	defer db.Close()
+
+	b := []byte("a0eebc99-9c0b-4ef8-bb6d-6bb9bd380a11")
+	row := db.QueryRow("SELECT $1::uuid", b)
+
+	var result string
+	err := row.Scan(&result)
+	if forceBinaryParameters() {
+		pqErr := err.(*Error)
+		if pqErr == nil {
+			t.Errorf("Expected to get error")
+		} else if pqErr.Code != "22P03" {
+			t.Fatalf("Expected to get invalid binary encoding error (22P03), got %s", pqErr.Code)
+		}
+	} else {
+		if err != nil {
+			t.Fatal(err)
+		}
+
+		if result != string(b) {
+			t.Fatalf("expected %v but got %v", b, result)
+		}
+	}
+}
+
+func TestBinaryByteSlicetoUUID(t *testing.T) {
+	db := openTestConn(t)
+	defer db.Close()
+
+	b := []byte{'\xa0', '\xee', '\xbc', '\x99',
+		'\x9c', '\x0b',
+		'\x4e', '\xf8',
+		'\xbb', '\x00', '\x6b',
+		'\xb9', '\xbd', '\x38', '\x0a', '\x11'}
+	row := db.QueryRow("SELECT $1::uuid", b)
+
+	var result string
+	err := row.Scan(&result)
+	if forceBinaryParameters() {
+		if err != nil {
+			t.Fatal(err)
+		}
+
+		if result != string("a0eebc99-9c0b-4ef8-bb00-6bb9bd380a11") {
+			t.Fatalf("expected %v but got %v", b, result)
+		}
+	} else {
+		pqErr := err.(*Error)
+		if pqErr == nil {
+			t.Errorf("Expected to get error")
+		} else if pqErr.Code != "22021" {
+			t.Fatalf("Expected to get invalid byte sequence for encoding error (22021), got %s", pqErr.Code)
+		}
+	}
+}
+
+func TestStringToUUID(t *testing.T) {
+	db := openTestConn(t)
+	defer db.Close()
+
+	s := "a0eebc99-9c0b-4ef8-bb00-6bb9bd380a11"
+	row := db.QueryRow("SELECT $1::uuid", s)
+
+	var result string
+	err := row.Scan(&result)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	if result != s {
+		t.Fatalf("expected %v but got %v", s, result)
+	}
+}
+
+func TestTextByteSliceToInt(t *testing.T) {
+	db := openTestConn(t)
+	defer db.Close()
+
+	expected := 12345678
+	b := []byte(fmt.Sprintf("%d", expected))
+	row := db.QueryRow("SELECT $1::int", b)
+
+	var result int
+	err := row.Scan(&result)
+	if forceBinaryParameters() {
+		pqErr := err.(*Error)
+		if pqErr == nil {
+			t.Errorf("Expected to get error")
+		} else if pqErr.Code != "22P03" {
+			t.Fatalf("Expected to get invalid binary encoding error (22P03), got %s", pqErr.Code)
+		}
+	} else {
+		if err != nil {
+			t.Fatal(err)
+		}
+		if result != expected {
+			t.Fatalf("expected %v but got %v", expected, result)
+		}
+	}
+}
+
+func TestBinaryByteSliceToInt(t *testing.T) {
+	db := openTestConn(t)
+	defer db.Close()
+
+	expected := 12345678
+	b := []byte{'\x00', '\xbc', '\x61', '\x4e'}
+	row := db.QueryRow("SELECT $1::int", b)
+
+	var result int
+	err := row.Scan(&result)
+	if forceBinaryParameters() {
+		if err != nil {
+			t.Fatal(err)
+		}
+		if result != expected {
+			t.Fatalf("expected %v but got %v", expected, result)
+		}
+	} else {
+		pqErr := err.(*Error)
+		if pqErr == nil {
+			t.Errorf("Expected to get error")
+		} else if pqErr.Code != "22021" {
+			t.Fatalf("Expected to get invalid byte sequence for encoding error (22021), got %s", pqErr.Code)
+		}
+	}
+}
+
+func TestTextDecodeIntoString(t *testing.T) {
+	input := []byte("hello world")
+	want := string(input)
+	for _, typ := range []oid.Oid{oid.T_char, oid.T_varchar, oid.T_text} {
+		got := decode(&parameterStatus{}, input, typ, formatText)
+		if got != want {
+			t.Errorf("invalid string decoding output for %T(%+v), got %v but expected %v", typ, typ, got, want)
+		}
+	}
+}
+
+func TestByteaOutputFormatEncoding(t *testing.T) {
+	input := []byte("\\x\x00\x01\x02\xFF\xFEabcdefg0123")
+	want := []byte("\\x5c78000102fffe6162636465666730313233")
+	got := encode(&parameterStatus{serverVersion: 90000}, input, oid.T_bytea)
+	if !bytes.Equal(want, got) {
+		t.Errorf("invalid hex bytea output, got %v but expected %v", got, want)
+	}
+
+	want = []byte("\\\\x\\000\\001\\002\\377\\376abcdefg0123")
+	got = encode(&parameterStatus{serverVersion: 84000}, input, oid.T_bytea)
+	if !bytes.Equal(want, got) {
+		t.Errorf("invalid escape bytea output, got %v but expected %v", got, want)
+	}
+}
+
+func TestByteaOutputFormats(t *testing.T) {
+	db := openTestConn(t)
+	defer db.Close()
+
+	if getServerVersion(t, db) < 90000 {
+		// skip
+		return
+	}
+
+	testByteaOutputFormat := func(f string, usePrepared bool) {
+		expectedData := []byte("\x5c\x78\x00\xff\x61\x62\x63\x01\x08")
+		sqlQuery := "SELECT decode('5c7800ff6162630108', 'hex')"
+
+		var data []byte
+
+		// use a txn to avoid relying on getting the same connection
+		txn, err := db.Begin()
+		if err != nil {
+			t.Fatal(err)
+		}
+		defer txn.Rollback()
+
+		_, err = txn.Exec("SET LOCAL bytea_output TO " + f)
+		if err != nil {
+			t.Fatal(err)
+		}
+		var rows *sql.Rows
+		var stmt *sql.Stmt
+		if usePrepared {
+			stmt, err = txn.Prepare(sqlQuery)
+			if err != nil {
+				t.Fatal(err)
+			}
+			rows, err = stmt.Query()
+		} else {
+			// use Query; QueryRow would hide the actual error
+			rows, err = txn.Query(sqlQuery)
+		}
+		if err != nil {
+			t.Fatal(err)
+		}
+		if !rows.Next() {
+			if rows.Err() != nil {
+				t.Fatal(rows.Err())
+			}
+			t.Fatal("shouldn't happen")
+		}
+		err = rows.Scan(&data)
+		if err != nil {
+			t.Fatal(err)
+		}
+		err = rows.Close()
+		if err != nil {
+			t.Fatal(err)
+		}
+		if stmt != nil {
+			err = stmt.Close()
+			if err != nil {
+				t.Fatal(err)
+			}
+		}
+		if !bytes.Equal(data, expectedData) {
+			t.Errorf("unexpected bytea value %v for format %s; expected %v", data, f, expectedData)
+		}
+	}
+
+	testByteaOutputFormat("hex", false)
+	testByteaOutputFormat("escape", false)
+	testByteaOutputFormat("hex", true)
+	testByteaOutputFormat("escape", true)
+}
+
+func TestAppendEncodedText(t *testing.T) {
+	var buf []byte
+
+	buf = appendEncodedText(&parameterStatus{serverVersion: 90000}, buf, int64(10))
+	buf = append(buf, '\t')
+	buf = appendEncodedText(&parameterStatus{serverVersion: 90000}, buf, 42.0000000001)
+	buf = append(buf, '\t')
+	buf = appendEncodedText(&parameterStatus{serverVersion: 90000}, buf, "hello\tworld")
+	buf = append(buf, '\t')
+	buf = appendEncodedText(&parameterStatus{serverVersion: 90000}, buf, []byte{0, 128, 255})
+
+	if string(buf) != "10\t42.0000000001\thello\\tworld\t\\\\x0080ff" {
+		t.Fatal(string(buf))
+	}
+}
+
+func TestAppendEscapedText(t *testing.T) {
+	if esc := appendEscapedText(nil, "hallo\tescape"); string(esc) != "hallo\\tescape" {
+		t.Fatal(string(esc))
+	}
+	if esc := appendEscapedText(nil, "hallo\\tescape\n"); string(esc) != "hallo\\\\tescape\\n" {
+		t.Fatal(string(esc))
+	}
+	if esc := appendEscapedText(nil, "\n\r\t\f"); string(esc) != "\\n\\r\\t\f" {
+		t.Fatal(string(esc))
+	}
+}
+
+func TestAppendEscapedTextExistingBuffer(t *testing.T) {
+	buf := []byte("123\t")
+	if esc := appendEscapedText(buf, "hallo\tescape"); string(esc) != "123\thallo\\tescape" {
+		t.Fatal(string(esc))
+	}
+	buf = []byte("123\t")
+	if esc := appendEscapedText(buf, "hallo\\tescape\n"); string(esc) != "123\thallo\\\\tescape\\n" {
+		t.Fatal(string(esc))
+	}
+	buf = []byte("123\t")
+	if esc := appendEscapedText(buf, "\n\r\t\f"); string(esc) != "123\t\\n\\r\\t\f" {
+		t.Fatal(string(esc))
+	}
+}
+
+var formatAndParseTimestamp = []struct {
+	time     time.Time
+	expected string
+}{
+	{time.Time{}, "0001-01-01 00:00:00Z"},
+	{time.Date(2001, time.February, 3, 4, 5, 6, 123456789, time.FixedZone("", 0)), "2001-02-03 04:05:06.123456789Z"},
+	{time.Date(2001, time.February, 3, 4, 5, 6, 123456789, time.FixedZone("", 2*60*60)), "2001-02-03 04:05:06.123456789+02:00"},
+	{time.Date(2001, time.February, 3, 4, 5, 6, 123456789, time.FixedZone("", -6*60*60)), "2001-02-03 04:05:06.123456789-06:00"},
+	{time.Date(2001, time.February, 3, 4, 5, 6, 0, time.FixedZone("", -(7*60*60+30*60+9))), "2001-02-03 04:05:06-07:30:09"},
+
+	{time.Date(1, time.February, 3, 4, 5, 6, 123456789, time.FixedZone("", 0)), "0001-02-03 04:05:06.123456789Z"},
+	{time.Date(1, time.February, 3, 4, 5, 6, 123456789, time.FixedZone("", 2*60*60)), "0001-02-03 04:05:06.123456789+02:00"},
+	{time.Date(1, time.February, 3, 4, 5, 6, 123456789, time.FixedZone("", -6*60*60)), "0001-02-03 04:05:06.123456789-06:00"},
+
+	{time.Date(0, time.February, 3, 4, 5, 6, 123456789, time.FixedZone("", 0)), "0001-02-03 04:05:06.123456789Z BC"},
+	{time.Date(0, time.February, 3, 4, 5, 6, 123456789, time.FixedZone("", 2*60*60)), "0001-02-03 04:05:06.123456789+02:00 BC"},
+	{time.Date(0, time.February, 3, 4, 5, 6, 123456789, time.FixedZone("", -6*60*60)), "0001-02-03 04:05:06.123456789-06:00 BC"},
+
+	{time.Date(1, time.February, 3, 4, 5, 6, 0, time.FixedZone("", -(7*60*60+30*60+9))), "0001-02-03 04:05:06-07:30:09"},
+	{time.Date(0, time.February, 3, 4, 5, 6, 0, time.FixedZone("", -(7*60*60+30*60+9))), "0001-02-03 04:05:06-07:30:09 BC"},
+}
+
+func TestFormatAndParseTimestamp(t *testing.T) {
+	for _, val := range formatAndParseTimestamp {
+		formattedTime := FormatTimestamp(val.time)
+		parsedTime, err := ParseTimestamp(nil, string(formattedTime))
+
+		if err != nil {
+			t.Errorf("invalid parsing, err: %v", err.Error())
+		}
+
+		if val.time.UTC() != parsedTime.UTC() {
+			t.Errorf("invalid parsing from formatted timestamp, got %v; expected %v", parsedTime.String(), val.time.String())
+		}
+	}
+}
+
+func BenchmarkAppendEscapedText(b *testing.B) {
+	longString := ""
+	for i := 0; i < 100; i++ {
+		longString += "123456789\n"
+	}
+	for i := 0; i < b.N; i++ {
+		appendEscapedText(nil, longString)
+	}
+}
+
+func BenchmarkAppendEscapedTextNoEscape(b *testing.B) {
+	longString := ""
+	for i := 0; i < 100; i++ {
+		longString += "1234567890"
+	}
+	for i := 0; i < b.N; i++ {
+		appendEscapedText(nil, longString)
+	}
+}

third_party/highgo-pq/error.go

@@ -0,0 +1,523 @@
+package pq
+
+import (
+	"database/sql/driver"
+	"fmt"
+	"io"
+	"net"
+	"runtime"
+)
+
+// Error severities
+const (
+	Efatal   = "FATAL"
+	Epanic   = "PANIC"
+	Ewarning = "WARNING"
+	Enotice  = "NOTICE"
+	Edebug   = "DEBUG"
+	Einfo    = "INFO"
+	Elog     = "LOG"
+)
+
+// Error represents an error communicating with the server.
+//
+// See http://www.postgresql.org/docs/current/static/protocol-error-fields.html for details of the fields
+type Error struct {
+	Severity         string
+	Code             ErrorCode
+	Message          string
+	Detail           string
+	Hint             string
+	Position         string
+	InternalPosition string
+	InternalQuery    string
+	Where            string
+	Schema           string
+	Table            string
+	Column           string
+	DataTypeName     string
+	Constraint       string
+	File             string
+	Line             string
+	Routine          string
+}
+
+// ErrorCode is a five-character error code.
+type ErrorCode string
+
+// Name returns a more human friendly rendering of the error code, namely the
+// "condition name".
+//
+// See http://www.postgresql.org/docs/9.3/static/errcodes-appendix.html for
+// details.
+func (ec ErrorCode) Name() string {
+	return errorCodeNames[ec]
+}
+
+// ErrorClass is only the class part of an error code.
+type ErrorClass string
+
+// Name returns the condition name of an error class.  It is equivalent to the
+// condition name of the "standard" error code (i.e. the one having the last
+// three characters "000").
+func (ec ErrorClass) Name() string {
+	return errorCodeNames[ErrorCode(ec+"000")]
+}
+
+// Class returns the error class, e.g. "28".
+//
+// See http://www.postgresql.org/docs/9.3/static/errcodes-appendix.html for
+// details.
+func (ec ErrorCode) Class() ErrorClass {
+	return ErrorClass(ec[0:2])
+}
+
+// errorCodeNames is a mapping between the five-character error codes and the
+// human readable "condition names". It is derived from the list at
+// http://www.postgresql.org/docs/9.3/static/errcodes-appendix.html
+var errorCodeNames = map[ErrorCode]string{
+	// Class 00 - Successful Completion
+	"00000": "successful_completion",
+	// Class 01 - Warning
+	"01000": "warning",
+	"0100C": "dynamic_result_sets_returned",
+	"01008": "implicit_zero_bit_padding",
+	"01003": "null_value_eliminated_in_set_function",
+	"01007": "privilege_not_granted",
+	"01006": "privilege_not_revoked",
+	"01004": "string_data_right_truncation",
+	"01P01": "deprecated_feature",
+	// Class 02 - No Data (this is also a warning class per the SQL standard)
+	"02000": "no_data",
+	"02001": "no_additional_dynamic_result_sets_returned",
+	// Class 03 - SQL Statement Not Yet Complete
+	"03000": "sql_statement_not_yet_complete",
+	// Class 08 - Connection Exception
+	"08000": "connection_exception",
+	"08003": "connection_does_not_exist",
+	"08006": "connection_failure",
+	"08001": "sqlclient_unable_to_establish_sqlconnection",
+	"08004": "sqlserver_rejected_establishment_of_sqlconnection",
+	"08007": "transaction_resolution_unknown",
+	"08P01": "protocol_violation",
+	// Class 09 - Triggered Action Exception
+	"09000": "triggered_action_exception",
+	// Class 0A - Feature Not Supported
+	"0A000": "feature_not_supported",
+	// Class 0B - Invalid Transaction Initiation
+	"0B000": "invalid_transaction_initiation",
+	// Class 0F - Locator Exception
+	"0F000": "locator_exception",
+	"0F001": "invalid_locator_specification",
+	// Class 0L - Invalid Grantor
+	"0L000": "invalid_grantor",
+	"0LP01": "invalid_grant_operation",
+	// Class 0P - Invalid Role Specification
+	"0P000": "invalid_role_specification",
+	// Class 0Z - Diagnostics Exception
+	"0Z000": "diagnostics_exception",
+	"0Z002": "stacked_diagnostics_accessed_without_active_handler",
+	// Class 20 - Case Not Found
+	"20000": "case_not_found",
+	// Class 21 - Cardinality Violation
+	"21000": "cardinality_violation",
+	// Class 22 - Data Exception
+	"22000": "data_exception",
+	"2202E": "array_subscript_error",
+	"22021": "character_not_in_repertoire",
+	"22008": "datetime_field_overflow",
+	"22012": "division_by_zero",
+	"22005": "error_in_assignment",
+	"2200B": "escape_character_conflict",
+	"22022": "indicator_overflow",
+	"22015": "interval_field_overflow",
+	"2201E": "invalid_argument_for_logarithm",
+	"22014": "invalid_argument_for_ntile_function",
+	"22016": "invalid_argument_for_nth_value_function",
+	"2201F": "invalid_argument_for_power_function",
+	"2201G": "invalid_argument_for_width_bucket_function",
+	"22018": "invalid_character_value_for_cast",
+	"22007": "invalid_datetime_format",
+	"22019": "invalid_escape_character",
+	"2200D": "invalid_escape_octet",
+	"22025": "invalid_escape_sequence",
+	"22P06": "nonstandard_use_of_escape_character",
+	"22010": "invalid_indicator_parameter_value",
+	"22023": "invalid_parameter_value",
+	"2201B": "invalid_regular_expression",
+	"2201W": "invalid_row_count_in_limit_clause",
+	"2201X": "invalid_row_count_in_result_offset_clause",
+	"22009": "invalid_time_zone_displacement_value",
+	"2200C": "invalid_use_of_escape_character",
+	"2200G": "most_specific_type_mismatch",
+	"22004": "null_value_not_allowed",
+	"22002": "null_value_no_indicator_parameter",
+	"22003": "numeric_value_out_of_range",
+	"2200H": "sequence_generator_limit_exceeded",
+	"22026": "string_data_length_mismatch",
+	"22001": "string_data_right_truncation",
+	"22011": "substring_error",
+	"22027": "trim_error",
+	"22024": "unterminated_c_string",
+	"2200F": "zero_length_character_string",
+	"22P01": "floating_point_exception",
+	"22P02": "invalid_text_representation",
+	"22P03": "invalid_binary_representation",
+	"22P04": "bad_copy_file_format",
+	"22P05": "untranslatable_character",
+	"2200L": "not_an_xml_document",
+	"2200M": "invalid_xml_document",
+	"2200N": "invalid_xml_content",
+	"2200S": "invalid_xml_comment",
+	"2200T": "invalid_xml_processing_instruction",
+	// Class 23 - Integrity Constraint Violation
+	"23000": "integrity_constraint_violation",
+	"23001": "restrict_violation",
+	"23502": "not_null_violation",
+	"23503": "foreign_key_violation",
+	"23505": "unique_violation",
+	"23514": "check_violation",
+	"23P01": "exclusion_violation",
+	// Class 24 - Invalid Cursor State
+	"24000": "invalid_cursor_state",
+	// Class 25 - Invalid Transaction State
+	"25000": "invalid_transaction_state",
+	"25001": "active_sql_transaction",
+	"25002": "branch_transaction_already_active",
+	"25008": "held_cursor_requires_same_isolation_level",
+	"25003": "inappropriate_access_mode_for_branch_transaction",
+	"25004": "inappropriate_isolation_level_for_branch_transaction",
+	"25005": "no_active_sql_transaction_for_branch_transaction",
+	"25006": "read_only_sql_transaction",
+	"25007": "schema_and_data_statement_mixing_not_supported",
+	"25P01": "no_active_sql_transaction",
+	"25P02": "in_failed_sql_transaction",
+	// Class 26 - Invalid SQL Statement Name
+	"26000": "invalid_sql_statement_name",
+	// Class 27 - Triggered Data Change Violation
+	"27000": "triggered_data_change_violation",
+	// Class 28 - Invalid Authorization Specification
+	"28000": "invalid_authorization_specification",
+	"28P01": "invalid_password",
+	// Class 2B - Dependent Privilege Descriptors Still Exist
+	"2B000": "dependent_privilege_descriptors_still_exist",
+	"2BP01": "dependent_objects_still_exist",
+	// Class 2D - Invalid Transaction Termination
+	"2D000": "invalid_transaction_termination",
+	// Class 2F - SQL Routine Exception
+	"2F000": "sql_routine_exception",
+	"2F005": "function_executed_no_return_statement",
+	"2F002": "modifying_sql_data_not_permitted",
+	"2F003": "prohibited_sql_statement_attempted",
+	"2F004": "reading_sql_data_not_permitted",
+	// Class 34 - Invalid Cursor Name
+	"34000": "invalid_cursor_name",
+	// Class 38 - External Routine Exception
+	"38000": "external_routine_exception",
+	"38001": "containing_sql_not_permitted",
+	"38002": "modifying_sql_data_not_permitted",
+	"38003": "prohibited_sql_statement_attempted",
+	"38004": "reading_sql_data_not_permitted",
+	// Class 39 - External Routine Invocation Exception
+	"39000": "external_routine_invocation_exception",
+	"39001": "invalid_sqlstate_returned",
+	"39004": "null_value_not_allowed",
+	"39P01": "trigger_protocol_violated",
+	"39P02": "srf_protocol_violated",
+	// Class 3B - Savepoint Exception
+	"3B000": "savepoint_exception",
+	"3B001": "invalid_savepoint_specification",
+	// Class 3D - Invalid Catalog Name
+	"3D000": "invalid_catalog_name",
+	// Class 3F - Invalid Schema Name
+	"3F000": "invalid_schema_name",
+	// Class 40 - Transaction Rollback
+	"40000": "transaction_rollback",
+	"40002": "transaction_integrity_constraint_violation",
+	"40001": "serialization_failure",
+	"40003": "statement_completion_unknown",
+	"40P01": "deadlock_detected",
+	// Class 42 - Syntax Error or Access Rule Violation
+	"42000": "syntax_error_or_access_rule_violation",
+	"42601": "syntax_error",
+	"42501": "insufficient_privilege",
+	"42846": "cannot_coerce",
+	"42803": "grouping_error",
+	"42P20": "windowing_error",
+	"42P19": "invalid_recursion",
+	"42830": "invalid_foreign_key",
+	"42602": "invalid_name",
+	"42622": "name_too_long",
+	"42939": "reserved_name",
+	"42804": "datatype_mismatch",
+	"42P18": "indeterminate_datatype",
+	"42P21": "collation_mismatch",
+	"42P22": "indeterminate_collation",
+	"42809": "wrong_object_type",
+	"42703": "undefined_column",
+	"42883": "undefined_function",
+	"42P01": "undefined_table",
+	"42P02": "undefined_parameter",
+	"42704": "undefined_object",
+	"42701": "duplicate_column",
+	"42P03": "duplicate_cursor",
+	"42P04": "duplicate_database",
+	"42723": "duplicate_function",
+	"42P05": "duplicate_prepared_statement",
+	"42P06": "duplicate_schema",
+	"42P07": "duplicate_table",
+	"42712": "duplicate_alias",
+	"42710": "duplicate_object",
+	"42702": "ambiguous_column",
+	"42725": "ambiguous_function",
+	"42P08": "ambiguous_parameter",
+	"42P09": "ambiguous_alias",
+	"42P10": "invalid_column_reference",
+	"42611": "invalid_column_definition",
+	"42P11": "invalid_cursor_definition",
+	"42P12": "invalid_database_definition",
+	"42P13": "invalid_function_definition",
+	"42P14": "invalid_prepared_statement_definition",
+	"42P15": "invalid_schema_definition",
+	"42P16": "invalid_table_definition",
+	"42P17": "invalid_object_definition",
+	// Class 44 - WITH CHECK OPTION Violation
+	"44000": "with_check_option_violation",
+	// Class 53 - Insufficient Resources
+	"53000": "insufficient_resources",
+	"53100": "disk_full",
+	"53200": "out_of_memory",
+	"53300": "too_many_connections",
+	"53400": "configuration_limit_exceeded",
+	// Class 54 - Program Limit Exceeded
+	"54000": "program_limit_exceeded",
+	"54001": "statement_too_complex",
+	"54011": "too_many_columns",
+	"54023": "too_many_arguments",
+	// Class 55 - Object Not In Prerequisite State
+	"55000": "object_not_in_prerequisite_state",
+	"55006": "object_in_use",
+	"55P02": "cant_change_runtime_param",
+	"55P03": "lock_not_available",
+	// Class 57 - Operator Intervention
+	"57000": "operator_intervention",
+	"57014": "query_canceled",
+	"57P01": "admin_shutdown",
+	"57P02": "crash_shutdown",
+	"57P03": "cannot_connect_now",
+	"57P04": "database_dropped",
+	// Class 58 - System Error (errors external to PostgreSQL itself)
+	"58000": "system_error",
+	"58030": "io_error",
+	"58P01": "undefined_file",
+	"58P02": "duplicate_file",
+	// Class F0 - Configuration File Error
+	"F0000": "config_file_error",
+	"F0001": "lock_file_exists",
+	// Class HV - Foreign Data Wrapper Error (SQL/MED)
+	"HV000": "fdw_error",
+	"HV005": "fdw_column_name_not_found",
+	"HV002": "fdw_dynamic_parameter_value_needed",
+	"HV010": "fdw_function_sequence_error",
+	"HV021": "fdw_inconsistent_descriptor_information",
+	"HV024": "fdw_invalid_attribute_value",
+	"HV007": "fdw_invalid_column_name",
+	"HV008": "fdw_invalid_column_number",
+	"HV004": "fdw_invalid_data_type",
+	"HV006": "fdw_invalid_data_type_descriptors",
+	"HV091": "fdw_invalid_descriptor_field_identifier",
+	"HV00B": "fdw_invalid_handle",
+	"HV00C": "fdw_invalid_option_index",
+	"HV00D": "fdw_invalid_option_name",
+	"HV090": "fdw_invalid_string_length_or_buffer_length",
+	"HV00A": "fdw_invalid_string_format",
+	"HV009": "fdw_invalid_use_of_null_pointer",
+	"HV014": "fdw_too_many_handles",
+	"HV001": "fdw_out_of_memory",
+	"HV00P": "fdw_no_schemas",
+	"HV00J": "fdw_option_name_not_found",
+	"HV00K": "fdw_reply_handle",
+	"HV00Q": "fdw_schema_not_found",
+	"HV00R": "fdw_table_not_found",
+	"HV00L": "fdw_unable_to_create_execution",
+	"HV00M": "fdw_unable_to_create_reply",
+	"HV00N": "fdw_unable_to_establish_connection",
+	// Class P0 - PL/pgSQL Error
+	"P0000": "plpgsql_error",
+	"P0001": "raise_exception",
+	"P0002": "no_data_found",
+	"P0003": "too_many_rows",
+	// Class XX - Internal Error
+	"XX000": "internal_error",
+	"XX001": "data_corrupted",
+	"XX002": "index_corrupted",
+}
+
+func parseError(r *readBuf) *Error {
+	err := new(Error)
+	for t := r.byte(); t != 0; t = r.byte() {
+		msg := r.string()
+		switch t {
+		case 'S':
+			err.Severity = msg
+		case 'C':
+			err.Code = ErrorCode(msg)
+		case 'M':
+			err.Message = msg
+		case 'D':
+			err.Detail = msg
+		case 'H':
+			err.Hint = msg
+		case 'P':
+			err.Position = msg
+		case 'p':
+			err.InternalPosition = msg
+		case 'q':
+			err.InternalQuery = msg
+		case 'W':
+			err.Where = msg
+		case 's':
+			err.Schema = msg
+		case 't':
+			err.Table = msg
+		case 'c':
+			err.Column = msg
+		case 'd':
+			err.DataTypeName = msg
+		case 'n':
+			err.Constraint = msg
+		case 'F':
+			err.File = msg
+		case 'L':
+			err.Line = msg
+		case 'R':
+			err.Routine = msg
+		}
+	}
+	return err
+}
+
+// Fatal returns true if the Error Severity is fatal.
+func (err *Error) Fatal() bool {
+	return err.Severity == Efatal
+}
+
+// SQLState returns the SQLState of the error.
+func (err *Error) SQLState() string {
+	return string(err.Code)
+}
+
+// Get implements the legacy PGError interface. New code should use the fields
+// of the Error struct directly.
+func (err *Error) Get(k byte) (v string) {
+	switch k {
+	case 'S':
+		return err.Severity
+	case 'C':
+		return string(err.Code)
+	case 'M':
+		return err.Message
+	case 'D':
+		return err.Detail
+	case 'H':
+		return err.Hint
+	case 'P':
+		return err.Position
+	case 'p':
+		return err.InternalPosition
+	case 'q':
+		return err.InternalQuery
+	case 'W':
+		return err.Where
+	case 's':
+		return err.Schema
+	case 't':
+		return err.Table
+	case 'c':
+		return err.Column
+	case 'd':
+		return err.DataTypeName
+	case 'n':
+		return err.Constraint
+	case 'F':
+		return err.File
+	case 'L':
+		return err.Line
+	case 'R':
+		return err.Routine
+	}
+	return ""
+}
+
+func (err *Error) Error() string {
+	return "pq: " + err.Message
+}
+
+// PGError is an interface used by previous versions of pq. It is provided
+// only to support legacy code. New code should use the Error type.
+type PGError interface {
+	Error() string
+	Fatal() bool
+	Get(k byte) (v string)
+}
+
+func errorf(s string, args ...interface{}) {
+	panic(fmt.Errorf("pq: %s", fmt.Sprintf(s, args...)))
+}
+
+// TODO(ainar-g) Rename to errorf after removing panics.
+func fmterrorf(s string, args ...interface{}) error {
+	return fmt.Errorf("pq: %s", fmt.Sprintf(s, args...))
+}
+
+func errRecoverNoErrBadConn(err *error) {
+	e := recover()
+	if e == nil {
+		// Do nothing
+		return
+	}
+	var ok bool
+	*err, ok = e.(error)
+	if !ok {
+		*err = fmt.Errorf("pq: unexpected error: %#v", e)
+	}
+}
+
+func (cn *conn) errRecover(err *error) {
+	e := recover()
+	switch v := e.(type) {
+	case nil:
+		// Do nothing
+	case runtime.Error:
+		cn.err.set(driver.ErrBadConn)
+		panic(v)
+	case *Error:
+		if v.Fatal() {
+			*err = driver.ErrBadConn
+		} else {
+			*err = v
+		}
+	case *net.OpError:
+		cn.err.set(driver.ErrBadConn)
+		*err = v
+	case *safeRetryError:
+		cn.err.set(driver.ErrBadConn)
+		*err = driver.ErrBadConn
+	case error:
+		if v == io.EOF || v.Error() == "remote error: handshake failure" {
+			*err = driver.ErrBadConn
+		} else {
+			*err = v
+		}
+
+	default:
+		cn.err.set(driver.ErrBadConn)
+		panic(fmt.Sprintf("unknown error: %#v", e))
+	}
+
+	// Any time we return ErrBadConn, we need to remember it since *Tx doesn't
+	// mark the connection bad in database/sql.
+	if *err == driver.ErrBadConn {
+		cn.err.set(driver.ErrBadConn)
+	}
+}

third_party/highgo-pq/example/listen/doc.go

@@ -0,0 +1,98 @@
+/*
+
+Package listen is a self-contained Go program which uses the LISTEN / NOTIFY
+mechanism to avoid polling the database while waiting for more work to arrive.
+
+    //
+    // You can see the program in action by defining a function similar to
+    // the following:
+    //
+    // CREATE OR REPLACE FUNCTION public.get_work()
+    //   RETURNS bigint
+    //   LANGUAGE sql
+    //   AS $$
+    //     SELECT CASE WHEN random() >= 0.2 THEN int8 '1' END
+    //   $$
+    // ;
+
+    package main
+
+    import (
+        "database/sql"
+        "fmt"
+        "time"
+
+        "github.com/lib/pq"
+    )
+
+    func doWork(db *sql.DB, work int64) {
+        // work here
+    }
+
+    func getWork(db *sql.DB) {
+        for {
+            // get work from the database here
+            var work sql.NullInt64
+            err := db.QueryRow("SELECT get_work()").Scan(&work)
+            if err != nil {
+                fmt.Println("call to get_work() failed: ", err)
+                time.Sleep(10 * time.Second)
+                continue
+            }
+            if !work.Valid {
+                // no more work to do
+                fmt.Println("ran out of work")
+                return
+            }
+
+            fmt.Println("starting work on ", work.Int64)
+            go doWork(db, work.Int64)
+        }
+    }
+
+    func waitForNotification(l *pq.Listener) {
+        select {
+            case <-l.Notify:
+                fmt.Println("received notification, new work available")
+            case <-time.After(90 * time.Second):
+                go l.Ping()
+                // Check if there's more work available, just in case it takes
+                // a while for the Listener to notice connection loss and
+                // reconnect.
+                fmt.Println("received no work for 90 seconds, checking for new work")
+        }
+    }
+
+    func main() {
+        var conninfo string = ""
+
+        db, err := sql.Open("postgres", conninfo)
+        if err != nil {
+            panic(err)
+        }
+
+        reportProblem := func(ev pq.ListenerEventType, err error) {
+            if err != nil {
+                fmt.Println(err.Error())
+            }
+        }
+
+        minReconn := 10 * time.Second
+        maxReconn := time.Minute
+        listener := pq.NewListener(conninfo, minReconn, maxReconn, reportProblem)
+        err = listener.Listen("getwork")
+        if err != nil {
+            panic(err)
+        }
+
+        fmt.Println("entering main loop")
+        for {
+            // process all available work before waiting for notifications
+            getWork(db)
+            waitForNotification(listener)
+        }
+    }
+
+
+*/
+package listen

third_party/highgo-pq/go.mod

@@ -0,0 +1,3 @@
+module github.com/highgo/pq-sm3
+
+go 1.13

third_party/highgo-pq/go18_test.go

@@ -0,0 +1,352 @@
+package pq
+
+import (
+	"context"
+	"database/sql"
+	"database/sql/driver"
+	"errors"
+	"runtime"
+	"strings"
+	"testing"
+	"time"
+)
+
+func TestMultipleSimpleQuery(t *testing.T) {
+	db := openTestConn(t)
+	defer db.Close()
+
+	rows, err := db.Query("select 1; set time zone default; select 2; select 3")
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer rows.Close()
+
+	var i int
+	for rows.Next() {
+		if err := rows.Scan(&i); err != nil {
+			t.Fatal(err)
+		}
+		if i != 1 {
+			t.Fatalf("expected 1, got %d", i)
+		}
+	}
+	if !rows.NextResultSet() {
+		t.Fatal("expected more result sets", rows.Err())
+	}
+	for rows.Next() {
+		if err := rows.Scan(&i); err != nil {
+			t.Fatal(err)
+		}
+		if i != 2 {
+			t.Fatalf("expected 2, got %d", i)
+		}
+	}
+
+	// Make sure that if we ignore a result we can still query.
+
+	rows, err = db.Query("select 4; select 5")
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer rows.Close()
+
+	for rows.Next() {
+		if err := rows.Scan(&i); err != nil {
+			t.Fatal(err)
+		}
+		if i != 4 {
+			t.Fatalf("expected 4, got %d", i)
+		}
+	}
+	if !rows.NextResultSet() {
+		t.Fatal("expected more result sets", rows.Err())
+	}
+	for rows.Next() {
+		if err := rows.Scan(&i); err != nil {
+			t.Fatal(err)
+		}
+		if i != 5 {
+			t.Fatalf("expected 5, got %d", i)
+		}
+	}
+	if rows.NextResultSet() {
+		t.Fatal("unexpected result set")
+	}
+}
+
+const contextRaceIterations = 100
+
+const cancelErrorCode ErrorCode = "57014"
+
+func TestContextCancelExec(t *testing.T) {
+	db := openTestConn(t)
+	defer db.Close()
+
+	ctx, cancel := context.WithCancel(context.Background())
+
+	// Delay execution for just a bit until db.ExecContext has begun.
+	defer time.AfterFunc(time.Millisecond*10, cancel).Stop()
+
+	// Not canceled until after the exec has started.
+	if _, err := db.ExecContext(ctx, "select pg_sleep(1)"); err == nil {
+		t.Fatal("expected error")
+	} else if pgErr := (*Error)(nil); !(errors.As(err, &pgErr) && pgErr.Code == cancelErrorCode) {
+		t.Fatalf("unexpected error: %s", err)
+	}
+
+	// Context is already canceled, so error should come before execution.
+	if _, err := db.ExecContext(ctx, "select pg_sleep(1)"); err == nil {
+		t.Fatal("expected error")
+	} else if err.Error() != "context canceled" {
+		t.Fatalf("unexpected error: %s", err)
+	}
+
+	for i := 0; i < contextRaceIterations; i++ {
+		func() {
+			ctx, cancel := context.WithCancel(context.Background())
+			defer cancel()
+			if _, err := db.ExecContext(ctx, "select 1"); err != nil {
+				t.Fatal(err)
+			}
+		}()
+
+		if _, err := db.Exec("select 1"); err != nil {
+			t.Fatal(err)
+		}
+	}
+}
+
+func TestContextCancelQuery(t *testing.T) {
+	db := openTestConn(t)
+	defer db.Close()
+
+	ctx, cancel := context.WithCancel(context.Background())
+
+	// Delay execution for just a bit until db.QueryContext has begun.
+	defer time.AfterFunc(time.Millisecond*10, cancel).Stop()
+
+	// Not canceled until after the exec has started.
+	if _, err := db.QueryContext(ctx, "select pg_sleep(1)"); err == nil {
+		t.Fatal("expected error")
+	} else if pgErr := (*Error)(nil); !(errors.As(err, &pgErr) && pgErr.Code == cancelErrorCode) {
+		t.Fatalf("unexpected error: %s", err)
+	}
+
+	// Context is already canceled, so error should come before execution.
+	if _, err := db.QueryContext(ctx, "select pg_sleep(1)"); err == nil {
+		t.Fatal("expected error")
+	} else if err.Error() != "context canceled" {
+		t.Fatalf("unexpected error: %s", err)
+	}
+
+	for i := 0; i < contextRaceIterations; i++ {
+		func() {
+			ctx, cancel := context.WithCancel(context.Background())
+			rows, err := db.QueryContext(ctx, "select 1")
+			cancel()
+			if err != nil {
+				t.Fatal(err)
+			} else if err := rows.Close(); err != nil && err != driver.ErrBadConn && err != context.Canceled {
+				t.Fatal(err)
+			}
+		}()
+
+		if rows, err := db.Query("select 1"); err != nil {
+			t.Fatal(err)
+		} else if err := rows.Close(); err != nil {
+			t.Fatal(err)
+		}
+	}
+}
+
+// TestIssue617 tests that a failed query in QueryContext doesn't lead to a
+// goroutine leak.
+func TestIssue617(t *testing.T) {
+	db := openTestConn(t)
+	defer db.Close()
+
+	const N = 10
+
+	numGoroutineStart := runtime.NumGoroutine()
+	for i := 0; i < N; i++ {
+		func() {
+			ctx, cancel := context.WithCancel(context.Background())
+			defer cancel()
+			_, err := db.QueryContext(ctx, `SELECT * FROM DOESNOTEXIST`)
+			pqErr, _ := err.(*Error)
+			// Expecting "pq: relation \"doesnotexist\" does not exist" error.
+			if err == nil || pqErr == nil || pqErr.Code != "42P01" {
+				t.Fatalf("expected undefined table error, got %v", err)
+			}
+		}()
+	}
+
+	// Give time for goroutines to terminate
+	delayTime := time.Millisecond * 50
+	waitTime := time.Second
+	iterations := int(waitTime / delayTime)
+
+	var numGoroutineFinish int
+	for i := 0; i < iterations; i++ {
+		time.Sleep(delayTime)
+
+		numGoroutineFinish = runtime.NumGoroutine()
+
+		// We use N/2 and not N because the GC and other actors may increase or
+		// decrease the number of goroutines.
+		if numGoroutineFinish-numGoroutineStart < N/2 {
+			return
+		}
+	}
+
+	t.Errorf("goroutine leak detected, was %d, now %d", numGoroutineStart, numGoroutineFinish)
+}
+
+func TestContextCancelBegin(t *testing.T) {
+	db := openTestConn(t)
+	defer db.Close()
+
+	ctx, cancel := context.WithCancel(context.Background())
+	tx, err := db.BeginTx(ctx, nil)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	// Delay execution for just a bit until tx.Exec has begun.
+	defer time.AfterFunc(time.Millisecond*10, cancel).Stop()
+
+	// Not canceled until after the exec has started.
+	if _, err := tx.Exec("select pg_sleep(1)"); err == nil {
+		t.Fatal("expected error")
+	} else if pgErr := (*Error)(nil); !(errors.As(err, &pgErr) && pgErr.Code == cancelErrorCode) {
+		t.Fatalf("unexpected error: %s", err)
+	}
+
+	// Transaction is canceled, so expect an error.
+	if _, err := tx.Query("select pg_sleep(1)"); err == nil {
+		t.Fatal("expected error")
+	} else if err != sql.ErrTxDone {
+		t.Fatalf("unexpected error: %s", err)
+	}
+
+	// Context is canceled, so cannot begin a transaction.
+	if _, err := db.BeginTx(ctx, nil); err == nil {
+		t.Fatal("expected error")
+	} else if err.Error() != "context canceled" {
+		t.Fatalf("unexpected error: %s", err)
+	}
+
+	for i := 0; i < contextRaceIterations; i++ {
+		func() {
+			ctx, cancel := context.WithCancel(context.Background())
+			tx, err := db.BeginTx(ctx, nil)
+			cancel()
+			if err != nil {
+				t.Fatal(err)
+			} else if err, pgErr := tx.Rollback(), (*Error)(nil); err != nil &&
+				!(errors.As(err, &pgErr) && pgErr.Code == cancelErrorCode) &&
+				err != sql.ErrTxDone && err != driver.ErrBadConn && err != context.Canceled {
+				t.Fatal(err)
+			}
+		}()
+
+		if tx, err := db.Begin(); err != nil {
+			t.Fatal(err)
+		} else if err := tx.Rollback(); err != nil {
+			t.Fatal(err)
+		}
+	}
+}
+
+func TestTxOptions(t *testing.T) {
+	db := openTestConn(t)
+	defer db.Close()
+	ctx := context.Background()
+
+	tests := []struct {
+		level     sql.IsolationLevel
+		isolation string
+	}{
+		{
+			level:     sql.LevelDefault,
+			isolation: "",
+		},
+		{
+			level:     sql.LevelReadUncommitted,
+			isolation: "read uncommitted",
+		},
+		{
+			level:     sql.LevelReadCommitted,
+			isolation: "read committed",
+		},
+		{
+			level:     sql.LevelRepeatableRead,
+			isolation: "repeatable read",
+		},
+		{
+			level:     sql.LevelSerializable,
+			isolation: "serializable",
+		},
+	}
+
+	for _, test := range tests {
+		for _, ro := range []bool{true, false} {
+			tx, err := db.BeginTx(ctx, &sql.TxOptions{
+				Isolation: test.level,
+				ReadOnly:  ro,
+			})
+			if err != nil {
+				t.Fatal(err)
+			}
+
+			var isolation string
+			err = tx.QueryRow("select current_setting('transaction_isolation')").Scan(&isolation)
+			if err != nil {
+				t.Fatal(err)
+			}
+
+			if test.isolation != "" && isolation != test.isolation {
+				t.Errorf("wrong isolation level: %s != %s", isolation, test.isolation)
+			}
+
+			var isRO string
+			err = tx.QueryRow("select current_setting('transaction_read_only')").Scan(&isRO)
+			if err != nil {
+				t.Fatal(err)
+			}
+
+			if ro != (isRO == "on") {
+				t.Errorf("read/[write,only] not set: %t != %s for level %s",
+					ro, isRO, test.isolation)
+			}
+
+			tx.Rollback()
+		}
+	}
+
+	_, err := db.BeginTx(ctx, &sql.TxOptions{
+		Isolation: sql.LevelLinearizable,
+	})
+	if err == nil {
+		t.Fatal("expected LevelLinearizable to fail")
+	}
+	if !strings.Contains(err.Error(), "isolation level not supported") {
+		t.Errorf("Expected error to mention isolation level, got %q", err)
+	}
+}
+
+func TestErrorSQLState(t *testing.T) {
+	r := readBuf([]byte{67, 52, 48, 48, 48, 49, 0, 0}) // 40001
+	err := parseError(&r)
+	var sqlErr errWithSQLState
+	if !errors.As(err, &sqlErr) {
+		t.Fatal("SQLState interface not satisfied")
+	}
+	if state := err.SQLState(); state != "40001" {
+		t.Fatalf("unexpected SQL state %v", state)
+	}
+}
+
+type errWithSQLState interface {
+	SQLState() string
+}

third_party/highgo-pq/go19_test.go

@@ -0,0 +1,99 @@
+//go:build go1.9
+// +build go1.9
+
+package pq
+
+import (
+	"context"
+	"database/sql"
+	"database/sql/driver"
+	"reflect"
+	"testing"
+)
+
+func TestPing(t *testing.T) {
+	ctx, cancel := context.WithCancel(context.Background())
+	db := openTestConn(t)
+	defer db.Close()
+
+	if _, ok := reflect.TypeOf(db).MethodByName("Conn"); !ok {
+		t.Skipf("Conn method undefined on type %T, skipping test (requires at least go1.9)", db)
+	}
+
+	if err := db.PingContext(ctx); err != nil {
+		t.Fatal("expected Ping to succeed")
+	}
+	defer cancel()
+
+	// grab a connection
+	conn, err := db.Conn(ctx)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	// start a transaction and read backend pid of our connection
+	tx, err := conn.BeginTx(ctx, &sql.TxOptions{
+		Isolation: sql.LevelDefault,
+		ReadOnly:  true,
+	})
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	rows, err := tx.Query("SELECT pg_backend_pid()")
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer rows.Close()
+
+	// read the pid from result
+	var pid int
+	for rows.Next() {
+		if err := rows.Scan(&pid); err != nil {
+			t.Fatal(err)
+		}
+	}
+	if rows.Err() != nil {
+		t.Fatal(err)
+	}
+	// Fail the transaction and make sure we can still ping.
+	if _, err := tx.Query("INVALID SQL"); err == nil {
+		t.Fatal("expected error")
+	}
+	if err := conn.PingContext(ctx); err != nil {
+		t.Fatal(err)
+	}
+	if err := tx.Rollback(); err != nil {
+		t.Fatal(err)
+	}
+
+	// kill the process which handles our connection and test if the ping fails
+	if _, err := db.Exec("SELECT pg_terminate_backend($1)", pid); err != nil {
+		t.Fatal(err)
+	}
+	if err := conn.PingContext(ctx); err != driver.ErrBadConn {
+		t.Fatalf("expected error %s, instead got %s", driver.ErrBadConn, err)
+	}
+}
+
+func TestCommitInFailedTransactionWithCancelContext(t *testing.T) {
+	db := openTestConn(t)
+	defer db.Close()
+
+	ctx, cancel := context.WithCancel(context.Background())
+	defer cancel()
+
+	txn, err := db.BeginTx(ctx, nil)
+	if err != nil {
+		t.Fatal(err)
+	}
+	rows, err := txn.Query("SELECT error")
+	if err == nil {
+		rows.Close()
+		t.Fatal("expected failure")
+	}
+	err = txn.Commit()
+	if err != ErrInFailedTransaction {
+		t.Fatalf("expected ErrInFailedTransaction; got %#v", err)
+	}
+}

third_party/highgo-pq/hstore/hstore.go

@@ -0,0 +1,118 @@
+package hstore
+
+import (
+	"database/sql"
+	"database/sql/driver"
+	"strings"
+)
+
+// Hstore is a wrapper for transferring Hstore values back and forth easily.
+type Hstore struct {
+	Map map[string]sql.NullString
+}
+
+// escapes and quotes hstore keys/values
+// s should be a sql.NullString or string
+func hQuote(s interface{}) string {
+	var str string
+	switch v := s.(type) {
+	case sql.NullString:
+		if !v.Valid {
+			return "NULL"
+		}
+		str = v.String
+	case string:
+		str = v
+	default:
+		panic("not a string or sql.NullString")
+	}
+
+	str = strings.Replace(str, "\\", "\\\\", -1)
+	return `"` + strings.Replace(str, "\"", "\\\"", -1) + `"`
+}
+
+// Scan implements the Scanner interface.
+//
+// Note h.Map is reallocated before the scan to clear existing values. If the
+// hstore column's database value is NULL, then h.Map is set to nil instead.
+func (h *Hstore) Scan(value interface{}) error {
+	if value == nil {
+		h.Map = nil
+		return nil
+	}
+	h.Map = make(map[string]sql.NullString)
+	var b byte
+	pair := [][]byte{{}, {}}
+	pi := 0
+	inQuote := false
+	didQuote := false
+	sawSlash := false
+	bindex := 0
+	for bindex, b = range value.([]byte) {
+		if sawSlash {
+			pair[pi] = append(pair[pi], b)
+			sawSlash = false
+			continue
+		}
+
+		switch b {
+		case '\\':
+			sawSlash = true
+			continue
+		case '"':
+			inQuote = !inQuote
+			if !didQuote {
+				didQuote = true
+			}
+			continue
+		default:
+			if !inQuote {
+				switch b {
+				case ' ', '\t', '\n', '\r':
+					continue
+				case '=':
+					continue
+				case '>':
+					pi = 1
+					didQuote = false
+					continue
+				case ',':
+					s := string(pair[1])
+					if !didQuote && len(s) == 4 && strings.ToLower(s) == "null" {
+						h.Map[string(pair[0])] = sql.NullString{String: "", Valid: false}
+					} else {
+						h.Map[string(pair[0])] = sql.NullString{String: string(pair[1]), Valid: true}
+					}
+					pair[0] = []byte{}
+					pair[1] = []byte{}
+					pi = 0
+					continue
+				}
+			}
+		}
+		pair[pi] = append(pair[pi], b)
+	}
+	if bindex > 0 {
+		s := string(pair[1])
+		if !didQuote && len(s) == 4 && strings.ToLower(s) == "null" {
+			h.Map[string(pair[0])] = sql.NullString{String: "", Valid: false}
+		} else {
+			h.Map[string(pair[0])] = sql.NullString{String: string(pair[1]), Valid: true}
+		}
+	}
+	return nil
+}
+
+// Value implements the driver Valuer interface. Note if h.Map is nil, the
+// database column value will be set to NULL.
+func (h Hstore) Value() (driver.Value, error) {
+	if h.Map == nil {
+		return nil, nil
+	}
+	parts := []string{}
+	for key, val := range h.Map {
+		thispart := hQuote(key) + "=>" + hQuote(val)
+		parts = append(parts, thispart)
+	}
+	return []byte(strings.Join(parts, ",")), nil
+}

third_party/highgo-pq/hstore/hstore_test.go

@@ -0,0 +1,148 @@
+package hstore
+
+import (
+	"database/sql"
+	"os"
+	"testing"
+
+	_ "github.com/lib/pq"
+)
+
+type Fatalistic interface {
+	Fatal(args ...interface{})
+}
+
+func openTestConn(t Fatalistic) *sql.DB {
+	datname := os.Getenv("PGDATABASE")
+	sslmode := os.Getenv("PGSSLMODE")
+
+	if datname == "" {
+		os.Setenv("PGDATABASE", "pqgotest")
+	}
+
+	if sslmode == "" {
+		os.Setenv("PGSSLMODE", "disable")
+	}
+
+	conn, err := sql.Open("postgres", "")
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	return conn
+}
+
+func TestHstore(t *testing.T) {
+	db := openTestConn(t)
+	defer db.Close()
+
+	// quietly create hstore if it doesn't exist
+	_, err := db.Exec("CREATE EXTENSION IF NOT EXISTS hstore")
+	if err != nil {
+		t.Skipf("Skipping hstore tests - hstore extension create failed: %s", err.Error())
+	}
+
+	hs := Hstore{}
+
+	// test for null-valued hstores
+	err = db.QueryRow("SELECT NULL::hstore").Scan(&hs)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if hs.Map != nil {
+		t.Fatalf("expected null map")
+	}
+
+	err = db.QueryRow("SELECT $1::hstore", hs).Scan(&hs)
+	if err != nil {
+		t.Fatalf("re-query null map failed: %s", err.Error())
+	}
+	if hs.Map != nil {
+		t.Fatalf("expected null map")
+	}
+
+	// test for empty hstores
+	err = db.QueryRow("SELECT ''::hstore").Scan(&hs)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if hs.Map == nil {
+		t.Fatalf("expected empty map, got null map")
+	}
+	if len(hs.Map) != 0 {
+		t.Fatalf("expected empty map, got len(map)=%d", len(hs.Map))
+	}
+
+	err = db.QueryRow("SELECT $1::hstore", hs).Scan(&hs)
+	if err != nil {
+		t.Fatalf("re-query empty map failed: %s", err.Error())
+	}
+	if hs.Map == nil {
+		t.Fatalf("expected empty map, got null map")
+	}
+	if len(hs.Map) != 0 {
+		t.Fatalf("expected empty map, got len(map)=%d", len(hs.Map))
+	}
+
+	// a few example maps to test out
+	hsOnePair := Hstore{
+		Map: map[string]sql.NullString{
+			"key1": {String: "value1", Valid: true},
+		},
+	}
+
+	hsThreePairs := Hstore{
+		Map: map[string]sql.NullString{
+			"key1": {String: "value1", Valid: true},
+			"key2": {String: "value2", Valid: true},
+			"key3": {String: "value3", Valid: true},
+		},
+	}
+
+	hsSmorgasbord := Hstore{
+		Map: map[string]sql.NullString{
+			"nullstring":             {String: "NULL", Valid: true},
+			"actuallynull":           {String: "", Valid: false},
+			"NULL":                   {String: "NULL string key", Valid: true},
+			"withbracket":            {String: "value>42", Valid: true},
+			"withequal":              {String: "value=42", Valid: true},
+			`"withquotes1"`:          {String: `this "should" be fine`, Valid: true},
+			`"withquotes"2"`:         {String: `this "should\" also be fine`, Valid: true},
+			"embedded1":              {String: "value1=>x1", Valid: true},
+			"embedded2":              {String: `"value2"=>x2`, Valid: true},
+			"withnewlines":           {String: "\n\nvalue\t=>2", Valid: true},
+			"<<all sorts of crazy>>": {String: `this, "should,\" also, => be fine`, Valid: true},
+		},
+	}
+
+	// test encoding in query params, then decoding during Scan
+	testBidirectional := func(h Hstore) {
+		err = db.QueryRow("SELECT $1::hstore", h).Scan(&hs)
+		if err != nil {
+			t.Fatalf("re-query %d-pair map failed: %s", len(h.Map), err.Error())
+		}
+		if hs.Map == nil {
+			t.Fatalf("expected %d-pair map, got null map", len(h.Map))
+		}
+		if len(hs.Map) != len(h.Map) {
+			t.Fatalf("expected %d-pair map, got len(map)=%d", len(h.Map), len(hs.Map))
+		}
+
+		for key, val := range hs.Map {
+			otherval, found := h.Map[key]
+			if !found {
+				t.Fatalf("  key '%v' not found in %d-pair map", key, len(h.Map))
+			}
+			if otherval.Valid != val.Valid {
+				t.Fatalf("  value %v <> %v in %d-pair map", otherval, val, len(h.Map))
+			}
+			if otherval.String != val.String {
+				t.Fatalf("  value '%v' <> '%v' in %d-pair map", otherval.String, val.String, len(h.Map))
+			}
+		}
+	}
+
+	testBidirectional(hsOnePair)
+	testBidirectional(hsThreePairs)
+	testBidirectional(hsSmorgasbord)
+}

third_party/highgo-pq/issues_test.go

@@ -0,0 +1,158 @@
+package pq
+
+import (
+	"context"
+	"database/sql"
+	"errors"
+	"testing"
+	"time"
+)
+
+func TestIssue494(t *testing.T) {
+	db := openTestConn(t)
+	defer db.Close()
+
+	query := `CREATE TEMP TABLE t (i INT PRIMARY KEY)`
+	if _, err := db.Exec(query); err != nil {
+		t.Fatal(err)
+	}
+
+	txn, err := db.Begin()
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	if _, err := txn.Prepare(CopyIn("t", "i")); err != nil {
+		t.Fatal(err)
+	}
+
+	if _, err := txn.Query("SELECT 1"); err == nil {
+		t.Fatal("expected error")
+	}
+}
+
+func TestIssue1046(t *testing.T) {
+	ctxTimeout := time.Second * 2
+
+	db := openTestConn(t)
+	defer db.Close()
+
+	ctx, cancel := context.WithTimeout(context.Background(), ctxTimeout)
+	defer cancel()
+
+	stmt, err := db.PrepareContext(ctx, `SELECT pg_sleep(10) AS id`)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	var d []uint8
+	err = stmt.QueryRowContext(ctx).Scan(&d)
+	dl, _ := ctx.Deadline()
+	since := time.Since(dl)
+	if since > ctxTimeout {
+		t.Logf("FAIL %s: query returned after context deadline: %v\n", t.Name(), since)
+		t.Fail()
+	}
+	if pgErr := (*Error)(nil); !(errors.As(err, &pgErr) && pgErr.Code == cancelErrorCode) {
+		t.Logf("ctx.Err(): [%T]%+v\n", ctx.Err(), ctx.Err())
+		t.Logf("got err: [%T] %+v expected errCode: %v", err, err, cancelErrorCode)
+		t.Fail()
+	}
+}
+
+func TestIssue1062(t *testing.T) {
+	db := openTestConn(t)
+	defer db.Close()
+
+	// Ensure that cancelling a QueryRowContext does not result in an ErrBadConn.
+
+	for i := 0; i < 100; i++ {
+		ctx, cancel := context.WithCancel(context.Background())
+		go cancel()
+		row := db.QueryRowContext(ctx, "select 1")
+
+		var v int
+		err := row.Scan(&v)
+		if pgErr := (*Error)(nil); err != nil &&
+			err != context.Canceled &&
+			!(errors.As(err, &pgErr) && pgErr.Code == cancelErrorCode) {
+			t.Fatalf("Scan resulted in unexpected error %v for canceled QueryRowContext at attempt %d", err, i+1)
+		}
+	}
+}
+
+func connIsValid(t *testing.T, db *sql.DB) {
+	t.Helper()
+
+	ctx := context.Background()
+	conn, err := db.Conn(ctx)
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer conn.Close()
+
+	// the connection must be valid
+	err = conn.PingContext(ctx)
+	if err != nil {
+		t.Errorf("PingContext err=%#v", err)
+	}
+	// close must not return an error
+	err = conn.Close()
+	if err != nil {
+		t.Errorf("Close err=%#v", err)
+	}
+}
+
+func TestQueryCancelRace(t *testing.T) {
+	db := openTestConn(t)
+	defer db.Close()
+
+	// cancel a query while executing on Postgres: must return the cancelled error code
+	ctx, cancel := context.WithCancel(context.Background())
+	go func() {
+		time.Sleep(10 * time.Millisecond)
+		cancel()
+	}()
+	row := db.QueryRowContext(ctx, "select pg_sleep(0.5)")
+	var pgSleepVoid string
+	err := row.Scan(&pgSleepVoid)
+	if pgErr := (*Error)(nil); !(errors.As(err, &pgErr) && pgErr.Code == cancelErrorCode) {
+		t.Fatalf("expected cancelled error; err=%#v", err)
+	}
+
+	// get a connection: it must be a valid
+	connIsValid(t, db)
+}
+
+// Test cancelling a scan after it is started. This broke with 1.10.4.
+func TestQueryCancelledReused(t *testing.T) {
+	db := openTestConn(t)
+	defer db.Close()
+
+	ctx, cancel := context.WithCancel(context.Background())
+	// run a query that returns a lot of data
+	rows, err := db.QueryContext(ctx, "select generate_series(1, 10000)")
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	// scan the first value
+	if !rows.Next() {
+		t.Error("expected rows.Next() to return true")
+	}
+	var i int
+	err = rows.Scan(&i)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if i != 1 {
+		t.Error(i)
+	}
+
+	// cancel the context and close rows, ignoring errors
+	cancel()
+	rows.Close()
+
+	// get a connection: it must be valid
+	connIsValid(t, db)
+}

third_party/highgo-pq/krb.go

@@ -0,0 +1,27 @@
+package pq
+
+// NewGSSFunc creates a GSS authentication provider, for use with
+// RegisterGSSProvider.
+type NewGSSFunc func() (GSS, error)
+
+var newGss NewGSSFunc
+
+// RegisterGSSProvider registers a GSS authentication provider. For example, if
+// you need to use Kerberos to authenticate with your server, add this to your
+// main package:
+//
+//	import "github.com/lib/pq/auth/kerberos"
+//
+//	func init() {
+//		pq.RegisterGSSProvider(func() (pq.GSS, error) { return kerberos.NewGSS() })
+//	}
+func RegisterGSSProvider(newGssArg NewGSSFunc) {
+	newGss = newGssArg
+}
+
+// GSS provides GSSAPI authentication (e.g., Kerberos).
+type GSS interface {
+	GetInitToken(host string, service string) ([]byte, error)
+	GetInitTokenFromSpn(spn string) ([]byte, error)
+	Continue(inToken []byte) (done bool, outToken []byte, err error)
+}

third_party/highgo-pq/notice.go

@@ -0,0 +1,72 @@
+//go:build go1.10
+// +build go1.10
+
+package pq
+
+import (
+	"context"
+	"database/sql/driver"
+)
+
+// NoticeHandler returns the notice handler on the given connection, if any. A
+// runtime panic occurs if c is not a pq connection. This is rarely used
+// directly, use ConnectorNoticeHandler and ConnectorWithNoticeHandler instead.
+func NoticeHandler(c driver.Conn) func(*Error) {
+	return c.(*conn).noticeHandler
+}
+
+// SetNoticeHandler sets the given notice handler on the given connection. A
+// runtime panic occurs if c is not a pq connection. A nil handler may be used
+// to unset it. This is rarely used directly, use ConnectorNoticeHandler and
+// ConnectorWithNoticeHandler instead.
+//
+// Note: Notice handlers are executed synchronously by pq meaning commands
+// won't continue to be processed until the handler returns.
+func SetNoticeHandler(c driver.Conn, handler func(*Error)) {
+	c.(*conn).noticeHandler = handler
+}
+
+// NoticeHandlerConnector wraps a regular connector and sets a notice handler
+// on it.
+type NoticeHandlerConnector struct {
+	driver.Connector
+	noticeHandler func(*Error)
+}
+
+// Connect calls the underlying connector's connect method and then sets the
+// notice handler.
+func (n *NoticeHandlerConnector) Connect(ctx context.Context) (driver.Conn, error) {
+	c, err := n.Connector.Connect(ctx)
+	if err == nil {
+		SetNoticeHandler(c, n.noticeHandler)
+	}
+	return c, err
+}
+
+// ConnectorNoticeHandler returns the currently set notice handler, if any. If
+// the given connector is not a result of ConnectorWithNoticeHandler, nil is
+// returned.
+func ConnectorNoticeHandler(c driver.Connector) func(*Error) {
+	if c, ok := c.(*NoticeHandlerConnector); ok {
+		return c.noticeHandler
+	}
+	return nil
+}
+
+// ConnectorWithNoticeHandler creates or sets the given handler for the given
+// connector. If the given connector is a result of calling this function
+// previously, it is simply set on the given connector and returned. Otherwise,
+// this returns a new connector wrapping the given one and setting the notice
+// handler. A nil notice handler may be used to unset it.
+//
+// The returned connector is intended to be used with database/sql.OpenDB.
+//
+// Note: Notice handlers are executed synchronously by pq meaning commands
+// won't continue to be processed until the handler returns.
+func ConnectorWithNoticeHandler(c driver.Connector, handler func(*Error)) *NoticeHandlerConnector {
+	if c, ok := c.(*NoticeHandlerConnector); ok {
+		c.noticeHandler = handler
+		return c
+	}
+	return &NoticeHandlerConnector{Connector: c, noticeHandler: handler}
+}

third_party/highgo-pq/notice_example_test.go

@@ -0,0 +1,34 @@
+//go:build go1.10
+// +build go1.10
+
+package pq_test
+
+import (
+	"database/sql"
+	"fmt"
+	"log"
+
+	"github.com/lib/pq"
+)
+
+func ExampleConnectorWithNoticeHandler() {
+	name := ""
+	// Base connector to wrap
+	base, err := pq.NewConnector(name)
+	if err != nil {
+		log.Fatal(err)
+	}
+	// Wrap the connector to simply print out the message
+	connector := pq.ConnectorWithNoticeHandler(base, func(notice *pq.Error) {
+		fmt.Println("Notice sent: " + notice.Message)
+	})
+	db := sql.OpenDB(connector)
+	defer db.Close()
+	// Raise a notice
+	sql := "DO language plpgsql $$ BEGIN RAISE NOTICE 'test notice'; END $$"
+	if _, err := db.Exec(sql); err != nil {
+		log.Fatal(err)
+	}
+	// Output:
+	// Notice sent: test notice
+}

third_party/highgo-pq/notice_test.go

@@ -0,0 +1,50 @@
+//go:build go1.10
+// +build go1.10
+
+package pq
+
+import (
+	"database/sql"
+	"database/sql/driver"
+	"testing"
+)
+
+func TestConnectorWithNoticeHandler_Simple(t *testing.T) {
+	b, err := NewConnector("")
+	if err != nil {
+		t.Fatal(err)
+	}
+	var notice *Error
+	// Make connector w/ handler to set the local var
+	c := ConnectorWithNoticeHandler(b, func(n *Error) { notice = n })
+	raiseNotice(c, t, "Test notice #1")
+	if notice == nil || notice.Message != "Test notice #1" {
+		t.Fatalf("Expected notice w/ message, got %v", notice)
+	}
+	// Unset the handler on the same connector
+	prevC := c
+	if c = ConnectorWithNoticeHandler(c, nil); c != prevC {
+		t.Fatalf("Expected to not create new connector but did")
+	}
+	raiseNotice(c, t, "Test notice #2")
+	if notice == nil || notice.Message != "Test notice #1" {
+		t.Fatalf("Expected notice to not change, got %v", notice)
+	}
+	// Set it back on the same connector
+	if c = ConnectorWithNoticeHandler(c, func(n *Error) { notice = n }); c != prevC {
+		t.Fatal("Expected to not create new connector but did")
+	}
+	raiseNotice(c, t, "Test notice #3")
+	if notice == nil || notice.Message != "Test notice #3" {
+		t.Fatalf("Expected notice w/ message, got %v", notice)
+	}
+}
+
+func raiseNotice(c driver.Connector, t *testing.T, escapedNotice string) {
+	db := sql.OpenDB(c)
+	defer db.Close()
+	sql := "DO language plpgsql $$ BEGIN RAISE NOTICE '" + escapedNotice + "'; END $$"
+	if _, err := db.Exec(sql); err != nil {
+		t.Fatal(err)
+	}
+}

third_party/highgo-pq/notify.go

@@ -0,0 +1,858 @@
+package pq
+
+// Package pq is a pure Go Postgres driver for the database/sql package.
+// This module contains support for Postgres LISTEN/NOTIFY.
+
+import (
+	"context"
+	"database/sql/driver"
+	"errors"
+	"fmt"
+	"sync"
+	"sync/atomic"
+	"time"
+)
+
+// Notification represents a single notification from the database.
+type Notification struct {
+	// Process ID (PID) of the notifying postgres backend.
+	BePid int
+	// Name of the channel the notification was sent on.
+	Channel string
+	// Payload, or the empty string if unspecified.
+	Extra string
+}
+
+func recvNotification(r *readBuf) *Notification {
+	bePid := r.int32()
+	channel := r.string()
+	extra := r.string()
+
+	return &Notification{bePid, channel, extra}
+}
+
+// SetNotificationHandler sets the given notification handler on the given
+// connection. A runtime panic occurs if c is not a pq connection. A nil handler
+// may be used to unset it.
+//
+// Note: Notification handlers are executed synchronously by pq meaning commands
+// won't continue to be processed until the handler returns.
+func SetNotificationHandler(c driver.Conn, handler func(*Notification)) {
+	c.(*conn).notificationHandler = handler
+}
+
+// NotificationHandlerConnector wraps a regular connector and sets a notification handler
+// on it.
+type NotificationHandlerConnector struct {
+	driver.Connector
+	notificationHandler func(*Notification)
+}
+
+// Connect calls the underlying connector's connect method and then sets the
+// notification handler.
+func (n *NotificationHandlerConnector) Connect(ctx context.Context) (driver.Conn, error) {
+	c, err := n.Connector.Connect(ctx)
+	if err == nil {
+		SetNotificationHandler(c, n.notificationHandler)
+	}
+	return c, err
+}
+
+// ConnectorNotificationHandler returns the currently set notification handler, if any. If
+// the given connector is not a result of ConnectorWithNotificationHandler, nil is
+// returned.
+func ConnectorNotificationHandler(c driver.Connector) func(*Notification) {
+	if c, ok := c.(*NotificationHandlerConnector); ok {
+		return c.notificationHandler
+	}
+	return nil
+}
+
+// ConnectorWithNotificationHandler creates or sets the given handler for the given
+// connector. If the given connector is a result of calling this function
+// previously, it is simply set on the given connector and returned. Otherwise,
+// this returns a new connector wrapping the given one and setting the notification
+// handler. A nil notification handler may be used to unset it.
+//
+// The returned connector is intended to be used with database/sql.OpenDB.
+//
+// Note: Notification handlers are executed synchronously by pq meaning commands
+// won't continue to be processed until the handler returns.
+func ConnectorWithNotificationHandler(c driver.Connector, handler func(*Notification)) *NotificationHandlerConnector {
+	if c, ok := c.(*NotificationHandlerConnector); ok {
+		c.notificationHandler = handler
+		return c
+	}
+	return &NotificationHandlerConnector{Connector: c, notificationHandler: handler}
+}
+
+const (
+	connStateIdle int32 = iota
+	connStateExpectResponse
+	connStateExpectReadyForQuery
+)
+
+type message struct {
+	typ byte
+	err error
+}
+
+var errListenerConnClosed = errors.New("pq: ListenerConn has been closed")
+
+// ListenerConn is a low-level interface for waiting for notifications.  You
+// should use Listener instead.
+type ListenerConn struct {
+	// guards cn and err
+	connectionLock sync.Mutex
+	cn             *conn
+	err            error
+
+	connState int32
+
+	// the sending goroutine will be holding this lock
+	senderLock sync.Mutex
+
+	notificationChan chan<- *Notification
+
+	replyChan chan message
+}
+
+// NewListenerConn creates a new ListenerConn. Use NewListener instead.
+func NewListenerConn(name string, notificationChan chan<- *Notification) (*ListenerConn, error) {
+	return newDialListenerConn(defaultDialer{}, name, notificationChan)
+}
+
+func newDialListenerConn(d Dialer, name string, c chan<- *Notification) (*ListenerConn, error) {
+	cn, err := DialOpen(d, name)
+	if err != nil {
+		return nil, err
+	}
+
+	l := &ListenerConn{
+		cn:               cn.(*conn),
+		notificationChan: c,
+		connState:        connStateIdle,
+		replyChan:        make(chan message, 2),
+	}
+
+	go l.listenerConnMain()
+
+	return l, nil
+}
+
+// We can only allow one goroutine at a time to be running a query on the
+// connection for various reasons, so the goroutine sending on the connection
+// must be holding senderLock.
+//
+// Returns an error if an unrecoverable error has occurred and the ListenerConn
+// should be abandoned.
+func (l *ListenerConn) acquireSenderLock() error {
+	// we must acquire senderLock first to avoid deadlocks; see ExecSimpleQuery
+	l.senderLock.Lock()
+
+	l.connectionLock.Lock()
+	err := l.err
+	l.connectionLock.Unlock()
+	if err != nil {
+		l.senderLock.Unlock()
+		return err
+	}
+	return nil
+}
+
+func (l *ListenerConn) releaseSenderLock() {
+	l.senderLock.Unlock()
+}
+
+// setState advances the protocol state to newState.  Returns false if moving
+// to that state from the current state is not allowed.
+func (l *ListenerConn) setState(newState int32) bool {
+	var expectedState int32
+
+	switch newState {
+	case connStateIdle:
+		expectedState = connStateExpectReadyForQuery
+	case connStateExpectResponse:
+		expectedState = connStateIdle
+	case connStateExpectReadyForQuery:
+		expectedState = connStateExpectResponse
+	default:
+		panic(fmt.Sprintf("unexpected listenerConnState %d", newState))
+	}
+
+	return atomic.CompareAndSwapInt32(&l.connState, expectedState, newState)
+}
+
+// Main logic is here: receive messages from the postgres backend, forward
+// notifications and query replies and keep the internal state in sync with the
+// protocol state.  Returns when the connection has been lost, is about to go
+// away or should be discarded because we couldn't agree on the state with the
+// server backend.
+func (l *ListenerConn) listenerConnLoop() (err error) {
+	defer errRecoverNoErrBadConn(&err)
+
+	r := &readBuf{}
+	for {
+		t, err := l.cn.recvMessage(r)
+		if err != nil {
+			return err
+		}
+
+		switch t {
+		case 'A':
+			// recvNotification copies all the data so we don't need to worry
+			// about the scratch buffer being overwritten.
+			l.notificationChan <- recvNotification(r)
+
+		case 'T', 'D':
+			// only used by tests; ignore
+
+		case 'E':
+			// We might receive an ErrorResponse even when not in a query; it
+			// is expected that the server will close the connection after
+			// that, but we should make sure that the error we display is the
+			// one from the stray ErrorResponse, not io.ErrUnexpectedEOF.
+			if !l.setState(connStateExpectReadyForQuery) {
+				return parseError(r)
+			}
+			l.replyChan <- message{t, parseError(r)}
+
+		case 'C', 'I':
+			if !l.setState(connStateExpectReadyForQuery) {
+				// protocol out of sync
+				return fmt.Errorf("unexpected CommandComplete")
+			}
+			// ExecSimpleQuery doesn't need to know about this message
+
+		case 'Z':
+			if !l.setState(connStateIdle) {
+				// protocol out of sync
+				return fmt.Errorf("unexpected ReadyForQuery")
+			}
+			l.replyChan <- message{t, nil}
+
+		case 'S':
+			// ignore
+		case 'N':
+			if n := l.cn.noticeHandler; n != nil {
+				n(parseError(r))
+			}
+		default:
+			return fmt.Errorf("unexpected message %q from server in listenerConnLoop", t)
+		}
+	}
+}
+
+// This is the main routine for the goroutine receiving on the database
+// connection.  Most of the main logic is in listenerConnLoop.
+func (l *ListenerConn) listenerConnMain() {
+	err := l.listenerConnLoop()
+
+	// listenerConnLoop terminated; we're done, but we still have to clean up.
+	// Make sure nobody tries to start any new queries by making sure the err
+	// pointer is set.  It is important that we do not overwrite its value; a
+	// connection could be closed by either this goroutine or one sending on
+	// the connection -- whoever closes the connection is assumed to have the
+	// more meaningful error message (as the other one will probably get
+	// net.errClosed), so that goroutine sets the error we expose while the
+	// other error is discarded.  If the connection is lost while two
+	// goroutines are operating on the socket, it probably doesn't matter which
+	// error we expose so we don't try to do anything more complex.
+	l.connectionLock.Lock()
+	if l.err == nil {
+		l.err = err
+	}
+	l.cn.Close()
+	l.connectionLock.Unlock()
+
+	// There might be a query in-flight; make sure nobody's waiting for a
+	// response to it, since there's not going to be one.
+	close(l.replyChan)
+
+	// let the listener know we're done
+	close(l.notificationChan)
+
+	// this ListenerConn is done
+}
+
+// Listen sends a LISTEN query to the server. See ExecSimpleQuery.
+func (l *ListenerConn) Listen(channel string) (bool, error) {
+	return l.ExecSimpleQuery("LISTEN " + QuoteIdentifier(channel))
+}
+
+// Unlisten sends an UNLISTEN query to the server. See ExecSimpleQuery.
+func (l *ListenerConn) Unlisten(channel string) (bool, error) {
+	return l.ExecSimpleQuery("UNLISTEN " + QuoteIdentifier(channel))
+}
+
+// UnlistenAll sends an `UNLISTEN *` query to the server. See ExecSimpleQuery.
+func (l *ListenerConn) UnlistenAll() (bool, error) {
+	return l.ExecSimpleQuery("UNLISTEN *")
+}
+
+// Ping the remote server to make sure it's alive.  Non-nil error means the
+// connection has failed and should be abandoned.
+func (l *ListenerConn) Ping() error {
+	sent, err := l.ExecSimpleQuery("")
+	if !sent {
+		return err
+	}
+	if err != nil {
+		// shouldn't happen
+		panic(err)
+	}
+	return nil
+}
+
+// Attempt to send a query on the connection.  Returns an error if sending the
+// query failed, and the caller should initiate closure of this connection.
+// The caller must be holding senderLock (see acquireSenderLock and
+// releaseSenderLock).
+func (l *ListenerConn) sendSimpleQuery(q string) (err error) {
+	defer errRecoverNoErrBadConn(&err)
+
+	// must set connection state before sending the query
+	if !l.setState(connStateExpectResponse) {
+		panic("two queries running at the same time")
+	}
+
+	// Can't use l.cn.writeBuf here because it uses the scratch buffer which
+	// might get overwritten by listenerConnLoop.
+	b := &writeBuf{
+		buf: []byte("Q\x00\x00\x00\x00"),
+		pos: 1,
+	}
+	b.string(q)
+	l.cn.send(b)
+
+	return nil
+}
+
+// ExecSimpleQuery executes a "simple query" (i.e. one with no bindable
+// parameters) on the connection. The possible return values are:
+//   1) "executed" is true; the query was executed to completion on the
+//      database server.  If the query failed, err will be set to the error
+//      returned by the database, otherwise err will be nil.
+//   2) If "executed" is false, the query could not be executed on the remote
+//      server.  err will be non-nil.
+//
+// After a call to ExecSimpleQuery has returned an executed=false value, the
+// connection has either been closed or will be closed shortly thereafter, and
+// all subsequently executed queries will return an error.
+func (l *ListenerConn) ExecSimpleQuery(q string) (executed bool, err error) {
+	if err = l.acquireSenderLock(); err != nil {
+		return false, err
+	}
+	defer l.releaseSenderLock()
+
+	err = l.sendSimpleQuery(q)
+	if err != nil {
+		// We can't know what state the protocol is in, so we need to abandon
+		// this connection.
+		l.connectionLock.Lock()
+		// Set the error pointer if it hasn't been set already; see
+		// listenerConnMain.
+		if l.err == nil {
+			l.err = err
+		}
+		l.connectionLock.Unlock()
+		l.cn.c.Close()
+		return false, err
+	}
+
+	// now we just wait for a reply..
+	for {
+		m, ok := <-l.replyChan
+		if !ok {
+			// We lost the connection to server, don't bother waiting for a
+			// a response.  err should have been set already.
+			l.connectionLock.Lock()
+			err := l.err
+			l.connectionLock.Unlock()
+			return false, err
+		}
+		switch m.typ {
+		case 'Z':
+			// sanity check
+			if m.err != nil {
+				panic("m.err != nil")
+			}
+			// done; err might or might not be set
+			return true, err
+
+		case 'E':
+			// sanity check
+			if m.err == nil {
+				panic("m.err == nil")
+			}
+			// server responded with an error; ReadyForQuery to follow
+			err = m.err
+
+		default:
+			return false, fmt.Errorf("unknown response for simple query: %q", m.typ)
+		}
+	}
+}
+
+// Close closes the connection.
+func (l *ListenerConn) Close() error {
+	l.connectionLock.Lock()
+	if l.err != nil {
+		l.connectionLock.Unlock()
+		return errListenerConnClosed
+	}
+	l.err = errListenerConnClosed
+	l.connectionLock.Unlock()
+	// We can't send anything on the connection without holding senderLock.
+	// Simply close the net.Conn to wake up everyone operating on it.
+	return l.cn.c.Close()
+}
+
+// Err returns the reason the connection was closed. It is not safe to call
+// this function until l.Notify has been closed.
+func (l *ListenerConn) Err() error {
+	return l.err
+}
+
+var errListenerClosed = errors.New("pq: Listener has been closed")
+
+// ErrChannelAlreadyOpen is returned from Listen when a channel is already
+// open.
+var ErrChannelAlreadyOpen = errors.New("pq: channel is already open")
+
+// ErrChannelNotOpen is returned from Unlisten when a channel is not open.
+var ErrChannelNotOpen = errors.New("pq: channel is not open")
+
+// ListenerEventType is an enumeration of listener event types.
+type ListenerEventType int
+
+const (
+	// ListenerEventConnected is emitted only when the database connection
+	// has been initially initialized. The err argument of the callback
+	// will always be nil.
+	ListenerEventConnected ListenerEventType = iota
+
+	// ListenerEventDisconnected is emitted after a database connection has
+	// been lost, either because of an error or because Close has been
+	// called. The err argument will be set to the reason the database
+	// connection was lost.
+	ListenerEventDisconnected
+
+	// ListenerEventReconnected is emitted after a database connection has
+	// been re-established after connection loss. The err argument of the
+	// callback will always be nil. After this event has been emitted, a
+	// nil pq.Notification is sent on the Listener.Notify channel.
+	ListenerEventReconnected
+
+	// ListenerEventConnectionAttemptFailed is emitted after a connection
+	// to the database was attempted, but failed. The err argument will be
+	// set to an error describing why the connection attempt did not
+	// succeed.
+	ListenerEventConnectionAttemptFailed
+)
+
+// EventCallbackType is the event callback type. See also ListenerEventType
+// constants' documentation.
+type EventCallbackType func(event ListenerEventType, err error)
+
+// Listener provides an interface for listening to notifications from a
+// PostgreSQL database.  For general usage information, see section
+// "Notifications".
+//
+// Listener can safely be used from concurrently running goroutines.
+type Listener struct {
+	// Channel for receiving notifications from the database.  In some cases a
+	// nil value will be sent.  See section "Notifications" above.
+	Notify chan *Notification
+
+	name                 string
+	minReconnectInterval time.Duration
+	maxReconnectInterval time.Duration
+	dialer               Dialer
+	eventCallback        EventCallbackType
+
+	lock                 sync.Mutex
+	isClosed             bool
+	reconnectCond        *sync.Cond
+	cn                   *ListenerConn
+	connNotificationChan <-chan *Notification
+	channels             map[string]struct{}
+}
+
+// NewListener creates a new database connection dedicated to LISTEN / NOTIFY.
+//
+// name should be set to a connection string to be used to establish the
+// database connection (see section "Connection String Parameters" above).
+//
+// minReconnectInterval controls the duration to wait before trying to
+// re-establish the database connection after connection loss.  After each
+// consecutive failure this interval is doubled, until maxReconnectInterval is
+// reached.  Successfully completing the connection establishment procedure
+// resets the interval back to minReconnectInterval.
+//
+// The last parameter eventCallback can be set to a function which will be
+// called by the Listener when the state of the underlying database connection
+// changes.  This callback will be called by the goroutine which dispatches the
+// notifications over the Notify channel, so you should try to avoid doing
+// potentially time-consuming operations from the callback.
+func NewListener(name string,
+	minReconnectInterval time.Duration,
+	maxReconnectInterval time.Duration,
+	eventCallback EventCallbackType) *Listener {
+	return NewDialListener(defaultDialer{}, name, minReconnectInterval, maxReconnectInterval, eventCallback)
+}
+
+// NewDialListener is like NewListener but it takes a Dialer.
+func NewDialListener(d Dialer,
+	name string,
+	minReconnectInterval time.Duration,
+	maxReconnectInterval time.Duration,
+	eventCallback EventCallbackType) *Listener {
+
+	l := &Listener{
+		name:                 name,
+		minReconnectInterval: minReconnectInterval,
+		maxReconnectInterval: maxReconnectInterval,
+		dialer:               d,
+		eventCallback:        eventCallback,
+
+		channels: make(map[string]struct{}),
+
+		Notify: make(chan *Notification, 32),
+	}
+	l.reconnectCond = sync.NewCond(&l.lock)
+
+	go l.listenerMain()
+
+	return l
+}
+
+// NotificationChannel returns the notification channel for this listener.
+// This is the same channel as Notify, and will not be recreated during the
+// life time of the Listener.
+func (l *Listener) NotificationChannel() <-chan *Notification {
+	return l.Notify
+}
+
+// Listen starts listening for notifications on a channel.  Calls to this
+// function will block until an acknowledgement has been received from the
+// server.  Note that Listener automatically re-establishes the connection
+// after connection loss, so this function may block indefinitely if the
+// connection can not be re-established.
+//
+// Listen will only fail in three conditions:
+//   1) The channel is already open.  The returned error will be
+//      ErrChannelAlreadyOpen.
+//   2) The query was executed on the remote server, but PostgreSQL returned an
+//      error message in response to the query.  The returned error will be a
+//      pq.Error containing the information the server supplied.
+//   3) Close is called on the Listener before the request could be completed.
+//
+// The channel name is case-sensitive.
+func (l *Listener) Listen(channel string) error {
+	l.lock.Lock()
+	defer l.lock.Unlock()
+
+	if l.isClosed {
+		return errListenerClosed
+	}
+
+	// The server allows you to issue a LISTEN on a channel which is already
+	// open, but it seems useful to be able to detect this case to spot for
+	// mistakes in application logic.  If the application genuinely does't
+	// care, it can check the exported error and ignore it.
+	_, exists := l.channels[channel]
+	if exists {
+		return ErrChannelAlreadyOpen
+	}
+
+	if l.cn != nil {
+		// If gotResponse is true but error is set, the query was executed on
+		// the remote server, but resulted in an error.  This should be
+		// relatively rare, so it's fine if we just pass the error to our
+		// caller.  However, if gotResponse is false, we could not complete the
+		// query on the remote server and our underlying connection is about
+		// to go away, so we only add relname to l.channels, and wait for
+		// resync() to take care of the rest.
+		gotResponse, err := l.cn.Listen(channel)
+		if gotResponse && err != nil {
+			return err
+		}
+	}
+
+	l.channels[channel] = struct{}{}
+	for l.cn == nil {
+		l.reconnectCond.Wait()
+		// we let go of the mutex for a while
+		if l.isClosed {
+			return errListenerClosed
+		}
+	}
+
+	return nil
+}
+
+// Unlisten removes a channel from the Listener's channel list.  Returns
+// ErrChannelNotOpen if the Listener is not listening on the specified channel.
+// Returns immediately with no error if there is no connection.  Note that you
+// might still get notifications for this channel even after Unlisten has
+// returned.
+//
+// The channel name is case-sensitive.
+func (l *Listener) Unlisten(channel string) error {
+	l.lock.Lock()
+	defer l.lock.Unlock()
+
+	if l.isClosed {
+		return errListenerClosed
+	}
+
+	// Similarly to LISTEN, this is not an error in Postgres, but it seems
+	// useful to distinguish from the normal conditions.
+	_, exists := l.channels[channel]
+	if !exists {
+		return ErrChannelNotOpen
+	}
+
+	if l.cn != nil {
+		// Similarly to Listen (see comment in that function), the caller
+		// should only be bothered with an error if it came from the backend as
+		// a response to our query.
+		gotResponse, err := l.cn.Unlisten(channel)
+		if gotResponse && err != nil {
+			return err
+		}
+	}
+
+	// Don't bother waiting for resync if there's no connection.
+	delete(l.channels, channel)
+	return nil
+}
+
+// UnlistenAll removes all channels from the Listener's channel list.  Returns
+// immediately with no error if there is no connection.  Note that you might
+// still get notifications for any of the deleted channels even after
+// UnlistenAll has returned.
+func (l *Listener) UnlistenAll() error {
+	l.lock.Lock()
+	defer l.lock.Unlock()
+
+	if l.isClosed {
+		return errListenerClosed
+	}
+
+	if l.cn != nil {
+		// Similarly to Listen (see comment in that function), the caller
+		// should only be bothered with an error if it came from the backend as
+		// a response to our query.
+		gotResponse, err := l.cn.UnlistenAll()
+		if gotResponse && err != nil {
+			return err
+		}
+	}
+
+	// Don't bother waiting for resync if there's no connection.
+	l.channels = make(map[string]struct{})
+	return nil
+}
+
+// Ping the remote server to make sure it's alive.  Non-nil return value means
+// that there is no active connection.
+func (l *Listener) Ping() error {
+	l.lock.Lock()
+	defer l.lock.Unlock()
+
+	if l.isClosed {
+		return errListenerClosed
+	}
+	if l.cn == nil {
+		return errors.New("no connection")
+	}
+
+	return l.cn.Ping()
+}
+
+// Clean up after losing the server connection.  Returns l.cn.Err(), which
+// should have the reason the connection was lost.
+func (l *Listener) disconnectCleanup() error {
+	l.lock.Lock()
+	defer l.lock.Unlock()
+
+	// sanity check; can't look at Err() until the channel has been closed
+	select {
+	case _, ok := <-l.connNotificationChan:
+		if ok {
+			panic("connNotificationChan not closed")
+		}
+	default:
+		panic("connNotificationChan not closed")
+	}
+
+	err := l.cn.Err()
+	l.cn.Close()
+	l.cn = nil
+	return err
+}
+
+// Synchronize the list of channels we want to be listening on with the server
+// after the connection has been established.
+func (l *Listener) resync(cn *ListenerConn, notificationChan <-chan *Notification) error {
+	doneChan := make(chan error)
+	go func(notificationChan <-chan *Notification) {
+		for channel := range l.channels {
+			// If we got a response, return that error to our caller as it's
+			// going to be more descriptive than cn.Err().
+			gotResponse, err := cn.Listen(channel)
+			if gotResponse && err != nil {
+				doneChan <- err
+				return
+			}
+
+			// If we couldn't reach the server, wait for notificationChan to
+			// close and then return the error message from the connection, as
+			// per ListenerConn's interface.
+			if err != nil {
+				for range notificationChan {
+				}
+				doneChan <- cn.Err()
+				return
+			}
+		}
+		doneChan <- nil
+	}(notificationChan)
+
+	// Ignore notifications while synchronization is going on to avoid
+	// deadlocks.  We have to send a nil notification over Notify anyway as
+	// we can't possibly know which notifications (if any) were lost while
+	// the connection was down, so there's no reason to try and process
+	// these messages at all.
+	for {
+		select {
+		case _, ok := <-notificationChan:
+			if !ok {
+				notificationChan = nil
+			}
+
+		case err := <-doneChan:
+			return err
+		}
+	}
+}
+
+// caller should NOT be holding l.lock
+func (l *Listener) closed() bool {
+	l.lock.Lock()
+	defer l.lock.Unlock()
+
+	return l.isClosed
+}
+
+func (l *Listener) connect() error {
+	notificationChan := make(chan *Notification, 32)
+	cn, err := newDialListenerConn(l.dialer, l.name, notificationChan)
+	if err != nil {
+		return err
+	}
+
+	l.lock.Lock()
+	defer l.lock.Unlock()
+
+	err = l.resync(cn, notificationChan)
+	if err != nil {
+		cn.Close()
+		return err
+	}
+
+	l.cn = cn
+	l.connNotificationChan = notificationChan
+	l.reconnectCond.Broadcast()
+
+	return nil
+}
+
+// Close disconnects the Listener from the database and shuts it down.
+// Subsequent calls to its methods will return an error.  Close returns an
+// error if the connection has already been closed.
+func (l *Listener) Close() error {
+	l.lock.Lock()
+	defer l.lock.Unlock()
+
+	if l.isClosed {
+		return errListenerClosed
+	}
+
+	if l.cn != nil {
+		l.cn.Close()
+	}
+	l.isClosed = true
+
+	// Unblock calls to Listen()
+	l.reconnectCond.Broadcast()
+
+	return nil
+}
+
+func (l *Listener) emitEvent(event ListenerEventType, err error) {
+	if l.eventCallback != nil {
+		l.eventCallback(event, err)
+	}
+}
+
+// Main logic here: maintain a connection to the server when possible, wait
+// for notifications and emit events.
+func (l *Listener) listenerConnLoop() {
+	var nextReconnect time.Time
+
+	reconnectInterval := l.minReconnectInterval
+	for {
+		for {
+			err := l.connect()
+			if err == nil {
+				break
+			}
+
+			if l.closed() {
+				return
+			}
+			l.emitEvent(ListenerEventConnectionAttemptFailed, err)
+
+			time.Sleep(reconnectInterval)
+			reconnectInterval *= 2
+			if reconnectInterval > l.maxReconnectInterval {
+				reconnectInterval = l.maxReconnectInterval
+			}
+		}
+
+		if nextReconnect.IsZero() {
+			l.emitEvent(ListenerEventConnected, nil)
+		} else {
+			l.emitEvent(ListenerEventReconnected, nil)
+			l.Notify <- nil
+		}
+
+		reconnectInterval = l.minReconnectInterval
+		nextReconnect = time.Now().Add(reconnectInterval)
+
+		for {
+			notification, ok := <-l.connNotificationChan
+			if !ok {
+				// lost connection, loop again
+				break
+			}
+			l.Notify <- notification
+		}
+
+		err := l.disconnectCleanup()
+		if l.closed() {
+			return
+		}
+		l.emitEvent(ListenerEventDisconnected, err)
+
+		time.Sleep(time.Until(nextReconnect))
+	}
+}
+
+func (l *Listener) listenerMain() {
+	l.listenerConnLoop()
+	close(l.Notify)
+}

third_party/highgo-pq/notify_test.go

@@ -0,0 +1,612 @@
+package pq
+
+import (
+	"database/sql"
+	"database/sql/driver"
+	"errors"
+	"fmt"
+	"io"
+	"os"
+	"runtime"
+	"sync"
+	"testing"
+	"time"
+)
+
+var errNilNotification = errors.New("nil notification")
+
+func expectNotification(t *testing.T, ch <-chan *Notification, relname string, extra string) error {
+	select {
+	case n := <-ch:
+		if n == nil {
+			return errNilNotification
+		}
+		if n.Channel != relname || n.Extra != extra {
+			return fmt.Errorf("unexpected notification %v", n)
+		}
+		return nil
+	case <-time.After(1500 * time.Millisecond):
+		return fmt.Errorf("timeout")
+	}
+}
+
+func expectNoNotification(t *testing.T, ch <-chan *Notification) error {
+	select {
+	case n := <-ch:
+		return fmt.Errorf("unexpected notification %v", n)
+	case <-time.After(100 * time.Millisecond):
+		return nil
+	}
+}
+
+func expectEvent(t *testing.T, eventch <-chan ListenerEventType, et ListenerEventType) error {
+	select {
+	case e := <-eventch:
+		if e != et {
+			return fmt.Errorf("unexpected event %v", e)
+		}
+		return nil
+	case <-time.After(1500 * time.Millisecond):
+		panic("expectEvent timeout")
+	}
+}
+
+func expectNoEvent(t *testing.T, eventch <-chan ListenerEventType) error {
+	select {
+	case e := <-eventch:
+		return fmt.Errorf("unexpected event %v", e)
+	case <-time.After(100 * time.Millisecond):
+		return nil
+	}
+}
+
+func newTestListenerConn(t *testing.T) (*ListenerConn, <-chan *Notification) {
+	datname := os.Getenv("PGDATABASE")
+	sslmode := os.Getenv("PGSSLMODE")
+
+	if datname == "" {
+		os.Setenv("PGDATABASE", "pqgotest")
+	}
+
+	if sslmode == "" {
+		os.Setenv("PGSSLMODE", "disable")
+	}
+
+	notificationChan := make(chan *Notification)
+	l, err := NewListenerConn("", notificationChan)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	return l, notificationChan
+}
+
+func TestNewListenerConn(t *testing.T) {
+	l, _ := newTestListenerConn(t)
+
+	defer l.Close()
+}
+
+func TestConnListen(t *testing.T) {
+	l, channel := newTestListenerConn(t)
+
+	defer l.Close()
+
+	db := openTestConn(t)
+	defer db.Close()
+
+	ok, err := l.Listen("notify_test")
+	if !ok || err != nil {
+		t.Fatal(err)
+	}
+
+	_, err = db.Exec("NOTIFY notify_test")
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	err = expectNotification(t, channel, "notify_test", "")
+	if err != nil {
+		t.Fatal(err)
+	}
+}
+
+func TestConnUnlisten(t *testing.T) {
+	l, channel := newTestListenerConn(t)
+
+	defer l.Close()
+
+	db := openTestConn(t)
+	defer db.Close()
+
+	ok, err := l.Listen("notify_test")
+	if !ok || err != nil {
+		t.Fatal(err)
+	}
+
+	_, err = db.Exec("NOTIFY notify_test")
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	err = expectNotification(t, channel, "notify_test", "")
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	ok, err = l.Unlisten("notify_test")
+	if !ok || err != nil {
+		t.Fatal(err)
+	}
+
+	_, err = db.Exec("NOTIFY notify_test")
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	err = expectNoNotification(t, channel)
+	if err != nil {
+		t.Fatal(err)
+	}
+}
+
+func TestConnUnlistenAll(t *testing.T) {
+	l, channel := newTestListenerConn(t)
+
+	defer l.Close()
+
+	db := openTestConn(t)
+	defer db.Close()
+
+	ok, err := l.Listen("notify_test")
+	if !ok || err != nil {
+		t.Fatal(err)
+	}
+
+	_, err = db.Exec("NOTIFY notify_test")
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	err = expectNotification(t, channel, "notify_test", "")
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	ok, err = l.UnlistenAll()
+	if !ok || err != nil {
+		t.Fatal(err)
+	}
+
+	_, err = db.Exec("NOTIFY notify_test")
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	err = expectNoNotification(t, channel)
+	if err != nil {
+		t.Fatal(err)
+	}
+}
+
+func TestConnClose(t *testing.T) {
+	l, _ := newTestListenerConn(t)
+	defer l.Close()
+
+	err := l.Close()
+	if err != nil {
+		t.Fatal(err)
+	}
+	err = l.Close()
+	if err != errListenerConnClosed {
+		t.Fatalf("expected errListenerConnClosed; got %v", err)
+	}
+}
+
+func TestConnPing(t *testing.T) {
+	l, _ := newTestListenerConn(t)
+	defer l.Close()
+	err := l.Ping()
+	if err != nil {
+		t.Fatal(err)
+	}
+	err = l.Close()
+	if err != nil {
+		t.Fatal(err)
+	}
+	err = l.Ping()
+	if err != errListenerConnClosed {
+		t.Fatalf("expected errListenerConnClosed; got %v", err)
+	}
+}
+
+// Test for deadlock where a query fails while another one is queued
+func TestConnExecDeadlock(t *testing.T) {
+	l, _ := newTestListenerConn(t)
+	defer l.Close()
+
+	var wg sync.WaitGroup
+	wg.Add(2)
+
+	go func() {
+		l.ExecSimpleQuery("SELECT pg_sleep(60)")
+		wg.Done()
+	}()
+	runtime.Gosched()
+	go func() {
+		l.ExecSimpleQuery("SELECT 1")
+		wg.Done()
+	}()
+	// give the two goroutines some time to get into position
+	runtime.Gosched()
+	// calls Close on the net.Conn; equivalent to a network failure
+	l.Close()
+
+	defer time.AfterFunc(10*time.Second, func() {
+		panic("timed out")
+	}).Stop()
+	wg.Wait()
+}
+
+// Test for ListenerConn being closed while a slow query is executing
+func TestListenerConnCloseWhileQueryIsExecuting(t *testing.T) {
+	l, _ := newTestListenerConn(t)
+	defer l.Close()
+
+	var wg sync.WaitGroup
+	wg.Add(1)
+
+	go func() {
+		sent, err := l.ExecSimpleQuery("SELECT pg_sleep(60)")
+		if sent {
+			panic("expected sent=false")
+		}
+		// could be any of a number of errors
+		if err == nil {
+			panic("expected error")
+		}
+		wg.Done()
+	}()
+	// give the above goroutine some time to get into position
+	runtime.Gosched()
+	err := l.Close()
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	defer time.AfterFunc(10*time.Second, func() {
+		panic("timed out")
+	}).Stop()
+	wg.Wait()
+}
+
+func TestNotifyExtra(t *testing.T) {
+	db := openTestConn(t)
+	defer db.Close()
+
+	if getServerVersion(t, db) < 90000 {
+		t.Skip("skipping NOTIFY payload test since the server does not appear to support it")
+	}
+
+	l, channel := newTestListenerConn(t)
+	defer l.Close()
+
+	ok, err := l.Listen("notify_test")
+	if !ok || err != nil {
+		t.Fatal(err)
+	}
+
+	_, err = db.Exec("NOTIFY notify_test, 'something'")
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	err = expectNotification(t, channel, "notify_test", "something")
+	if err != nil {
+		t.Fatal(err)
+	}
+}
+
+// create a new test listener and also set the timeouts
+func newTestListenerTimeout(t *testing.T, min time.Duration, max time.Duration) (*Listener, <-chan ListenerEventType) {
+	datname := os.Getenv("PGDATABASE")
+	sslmode := os.Getenv("PGSSLMODE")
+
+	if datname == "" {
+		os.Setenv("PGDATABASE", "pqgotest")
+	}
+
+	if sslmode == "" {
+		os.Setenv("PGSSLMODE", "disable")
+	}
+
+	eventch := make(chan ListenerEventType, 16)
+	l := NewListener("", min, max, func(t ListenerEventType, err error) { eventch <- t })
+	err := expectEvent(t, eventch, ListenerEventConnected)
+	if err != nil {
+		t.Fatal(err)
+	}
+	return l, eventch
+}
+
+func newTestListener(t *testing.T) (*Listener, <-chan ListenerEventType) {
+	return newTestListenerTimeout(t, time.Hour, time.Hour)
+}
+
+func TestListenerListen(t *testing.T) {
+	l, _ := newTestListener(t)
+	defer l.Close()
+
+	db := openTestConn(t)
+	defer db.Close()
+
+	err := l.Listen("notify_listen_test")
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	_, err = db.Exec("NOTIFY notify_listen_test")
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	err = expectNotification(t, l.Notify, "notify_listen_test", "")
+	if err != nil {
+		t.Fatal(err)
+	}
+}
+
+func TestListenerUnlisten(t *testing.T) {
+	l, _ := newTestListener(t)
+	defer l.Close()
+
+	db := openTestConn(t)
+	defer db.Close()
+
+	err := l.Listen("notify_listen_test")
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	_, err = db.Exec("NOTIFY notify_listen_test")
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	err = l.Unlisten("notify_listen_test")
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	err = expectNotification(t, l.Notify, "notify_listen_test", "")
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	_, err = db.Exec("NOTIFY notify_listen_test")
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	err = expectNoNotification(t, l.Notify)
+	if err != nil {
+		t.Fatal(err)
+	}
+}
+
+func TestListenerUnlistenAll(t *testing.T) {
+	l, _ := newTestListener(t)
+	defer l.Close()
+
+	db := openTestConn(t)
+	defer db.Close()
+
+	err := l.Listen("notify_listen_test")
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	_, err = db.Exec("NOTIFY notify_listen_test")
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	err = l.UnlistenAll()
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	err = expectNotification(t, l.Notify, "notify_listen_test", "")
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	_, err = db.Exec("NOTIFY notify_listen_test")
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	err = expectNoNotification(t, l.Notify)
+	if err != nil {
+		t.Fatal(err)
+	}
+}
+
+func TestListenerFailedQuery(t *testing.T) {
+	l, eventch := newTestListener(t)
+	defer l.Close()
+
+	db := openTestConn(t)
+	defer db.Close()
+
+	err := l.Listen("notify_listen_test")
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	_, err = db.Exec("NOTIFY notify_listen_test")
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	err = expectNotification(t, l.Notify, "notify_listen_test", "")
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	// shouldn't cause a disconnect
+	ok, err := l.cn.ExecSimpleQuery("SELECT error")
+	if !ok {
+		t.Fatalf("could not send query to server: %v", err)
+	}
+	_, ok = err.(PGError)
+	if !ok {
+		t.Fatalf("unexpected error %v", err)
+	}
+	err = expectNoEvent(t, eventch)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	// should still work
+	_, err = db.Exec("NOTIFY notify_listen_test")
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	err = expectNotification(t, l.Notify, "notify_listen_test", "")
+	if err != nil {
+		t.Fatal(err)
+	}
+}
+
+func TestListenerReconnect(t *testing.T) {
+	l, eventch := newTestListenerTimeout(t, 20*time.Millisecond, time.Hour)
+	defer l.Close()
+
+	db := openTestConn(t)
+	defer db.Close()
+
+	err := l.Listen("notify_listen_test")
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	_, err = db.Exec("NOTIFY notify_listen_test")
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	err = expectNotification(t, l.Notify, "notify_listen_test", "")
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	// kill the connection and make sure it comes back up
+	ok, err := l.cn.ExecSimpleQuery("SELECT pg_terminate_backend(pg_backend_pid())")
+	if ok {
+		t.Fatalf("could not kill the connection: %v", err)
+	}
+	if err != io.EOF {
+		t.Fatalf("unexpected error %v", err)
+	}
+	err = expectEvent(t, eventch, ListenerEventDisconnected)
+	if err != nil {
+		t.Fatal(err)
+	}
+	err = expectEvent(t, eventch, ListenerEventReconnected)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	// should still work
+	_, err = db.Exec("NOTIFY notify_listen_test")
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	// should get nil after Reconnected
+	err = expectNotification(t, l.Notify, "", "")
+	if err != errNilNotification {
+		t.Fatal(err)
+	}
+
+	err = expectNotification(t, l.Notify, "notify_listen_test", "")
+	if err != nil {
+		t.Fatal(err)
+	}
+}
+
+func TestListenerClose(t *testing.T) {
+	l, _ := newTestListenerTimeout(t, 20*time.Millisecond, time.Hour)
+	defer l.Close()
+
+	err := l.Close()
+	if err != nil {
+		t.Fatal(err)
+	}
+	err = l.Close()
+	if err != errListenerClosed {
+		t.Fatalf("expected errListenerClosed; got %v", err)
+	}
+}
+
+func TestListenerPing(t *testing.T) {
+	l, _ := newTestListenerTimeout(t, 20*time.Millisecond, time.Hour)
+	defer l.Close()
+
+	err := l.Ping()
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	err = l.Close()
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	err = l.Ping()
+	if err != errListenerClosed {
+		t.Fatalf("expected errListenerClosed; got %v", err)
+	}
+}
+
+func TestConnectorWithNotificationHandler_Simple(t *testing.T) {
+	b, err := NewConnector("")
+	if err != nil {
+		t.Fatal(err)
+	}
+	var notification *Notification
+	// Make connector w/ handler to set the local var
+	c := ConnectorWithNotificationHandler(b, func(n *Notification) { notification = n })
+	sendNotification(c, t, "Test notification #1")
+	if notification == nil || notification.Extra != "Test notification #1" {
+		t.Fatalf("Expected notification w/ message, got %v", notification)
+	}
+	// Unset the handler on the same connector
+	prevC := c
+	if c = ConnectorWithNotificationHandler(c, nil); c != prevC {
+		t.Fatalf("Expected to not create new connector but did")
+	}
+	sendNotification(c, t, "Test notification #2")
+	if notification == nil || notification.Extra != "Test notification #1" {
+		t.Fatalf("Expected notification to not change, got %v", notification)
+	}
+	// Set it back on the same connector
+	if c = ConnectorWithNotificationHandler(c, func(n *Notification) { notification = n }); c != prevC {
+		t.Fatal("Expected to not create new connector but did")
+	}
+	sendNotification(c, t, "Test notification #3")
+	if notification == nil || notification.Extra != "Test notification #3" {
+		t.Fatalf("Expected notification w/ message, got %v", notification)
+	}
+}
+
+func sendNotification(c driver.Connector, t *testing.T, escapedNotification string) {
+	db := sql.OpenDB(c)
+	defer db.Close()
+	sql := fmt.Sprintf("LISTEN foo; NOTIFY foo, '%s';", escapedNotification)
+	if _, err := db.Exec(sql); err != nil {
+		t.Fatal(err)
+	}
+}

third_party/highgo-pq/oid/doc.go

@@ -0,0 +1,6 @@
+// Package oid contains OID constants
+// as defined by the Postgres server.
+package oid
+
+// Oid is a Postgres Object ID.
+type Oid uint32

third_party/highgo-pq/oid/gen.go

@@ -0,0 +1,94 @@
+//go:build ignore
+// +build ignore
+
+// Generate the table of OID values
+// Run with 'go run gen.go'.
+package main
+
+import (
+	"database/sql"
+	"fmt"
+	"log"
+	"os"
+	"os/exec"
+	"strings"
+
+	_ "github.com/lib/pq"
+)
+
+// OID represent a postgres Object Identifier Type.
+type OID struct {
+	ID   int
+	Type string
+}
+
+// Name returns an upper case version of the oid type.
+func (o OID) Name() string {
+	return strings.ToUpper(o.Type)
+}
+
+func main() {
+	datname := os.Getenv("PGDATABASE")
+	sslmode := os.Getenv("PGSSLMODE")
+
+	if datname == "" {
+		os.Setenv("PGDATABASE", "pqgotest")
+	}
+
+	if sslmode == "" {
+		os.Setenv("PGSSLMODE", "disable")
+	}
+
+	db, err := sql.Open("postgres", "")
+	if err != nil {
+		log.Fatal(err)
+	}
+	rows, err := db.Query(`
+		SELECT typname, oid
+		FROM pg_type WHERE oid < 10000
+		ORDER BY oid;
+	`)
+	if err != nil {
+		log.Fatal(err)
+	}
+	oids := make([]*OID, 0)
+	for rows.Next() {
+		var oid OID
+		if err = rows.Scan(&oid.Type, &oid.ID); err != nil {
+			log.Fatal(err)
+		}
+		oids = append(oids, &oid)
+	}
+	if err = rows.Err(); err != nil {
+		log.Fatal(err)
+	}
+	cmd := exec.Command("gofmt")
+	cmd.Stderr = os.Stderr
+	w, err := cmd.StdinPipe()
+	if err != nil {
+		log.Fatal(err)
+	}
+	f, err := os.Create("types.go")
+	if err != nil {
+		log.Fatal(err)
+	}
+	cmd.Stdout = f
+	err = cmd.Start()
+	if err != nil {
+		log.Fatal(err)
+	}
+	fmt.Fprintln(w, "// Code generated by gen.go. DO NOT EDIT.")
+	fmt.Fprintln(w, "\npackage oid")
+	fmt.Fprintln(w, "const (")
+	for _, oid := range oids {
+		fmt.Fprintf(w, "T_%s Oid = %d\n", oid.Type, oid.ID)
+	}
+	fmt.Fprintln(w, ")")
+	fmt.Fprintln(w, "var TypeName = map[Oid]string{")
+	for _, oid := range oids {
+		fmt.Fprintf(w, "T_%s: \"%s\",\n", oid.Type, oid.Name())
+	}
+	fmt.Fprintln(w, "}")
+	w.Close()
+	cmd.Wait()
+}

third_party/highgo-pq/oid/types.go

@@ -0,0 +1,343 @@
+// Code generated by gen.go. DO NOT EDIT.
+
+package oid
+
+const (
+	T_bool             Oid = 16
+	T_bytea            Oid = 17
+	T_char             Oid = 18
+	T_name             Oid = 19
+	T_int8             Oid = 20
+	T_int2             Oid = 21
+	T_int2vector       Oid = 22
+	T_int4             Oid = 23
+	T_regproc          Oid = 24
+	T_text             Oid = 25
+	T_oid              Oid = 26
+	T_tid              Oid = 27
+	T_xid              Oid = 28
+	T_cid              Oid = 29
+	T_oidvector        Oid = 30
+	T_pg_ddl_command   Oid = 32
+	T_pg_type          Oid = 71
+	T_pg_attribute     Oid = 75
+	T_pg_proc          Oid = 81
+	T_pg_class         Oid = 83
+	T_json             Oid = 114
+	T_xml              Oid = 142
+	T__xml             Oid = 143
+	T_pg_node_tree     Oid = 194
+	T__json            Oid = 199
+	T_smgr             Oid = 210
+	T_index_am_handler Oid = 325
+	T_point            Oid = 600
+	T_lseg             Oid = 601
+	T_path             Oid = 602
+	T_box              Oid = 603
+	T_polygon          Oid = 604
+	T_line             Oid = 628
+	T__line            Oid = 629
+	T_cidr             Oid = 650
+	T__cidr            Oid = 651
+	T_float4           Oid = 700
+	T_float8           Oid = 701
+	T_abstime          Oid = 702
+	T_reltime          Oid = 703
+	T_tinterval        Oid = 704
+	T_unknown          Oid = 705
+	T_circle           Oid = 718
+	T__circle          Oid = 719
+	T_money            Oid = 790
+	T__money           Oid = 791
+	T_macaddr          Oid = 829
+	T_inet             Oid = 869
+	T__bool            Oid = 1000
+	T__bytea           Oid = 1001
+	T__char            Oid = 1002
+	T__name            Oid = 1003
+	T__int2            Oid = 1005
+	T__int2vector      Oid = 1006
+	T__int4            Oid = 1007
+	T__regproc         Oid = 1008
+	T__text            Oid = 1009
+	T__tid             Oid = 1010
+	T__xid             Oid = 1011
+	T__cid             Oid = 1012
+	T__oidvector       Oid = 1013
+	T__bpchar          Oid = 1014
+	T__varchar         Oid = 1015
+	T__int8            Oid = 1016
+	T__point           Oid = 1017
+	T__lseg            Oid = 1018
+	T__path            Oid = 1019
+	T__box             Oid = 1020
+	T__float4          Oid = 1021
+	T__float8          Oid = 1022
+	T__abstime         Oid = 1023
+	T__reltime         Oid = 1024
+	T__tinterval       Oid = 1025
+	T__polygon         Oid = 1027
+	T__oid             Oid = 1028
+	T_aclitem          Oid = 1033
+	T__aclitem         Oid = 1034
+	T__macaddr         Oid = 1040
+	T__inet            Oid = 1041
+	T_bpchar           Oid = 1042
+	T_varchar          Oid = 1043
+	T_date             Oid = 1082
+	T_time             Oid = 1083
+	T_timestamp        Oid = 1114
+	T__timestamp       Oid = 1115
+	T__date            Oid = 1182
+	T__time            Oid = 1183
+	T_timestamptz      Oid = 1184
+	T__timestamptz     Oid = 1185
+	T_interval         Oid = 1186
+	T__interval        Oid = 1187
+	T__numeric         Oid = 1231
+	T_pg_database      Oid = 1248
+	T__cstring         Oid = 1263
+	T_timetz           Oid = 1266
+	T__timetz          Oid = 1270
+	T_bit              Oid = 1560
+	T__bit             Oid = 1561
+	T_varbit           Oid = 1562
+	T__varbit          Oid = 1563
+	T_numeric          Oid = 1700
+	T_refcursor        Oid = 1790
+	T__refcursor       Oid = 2201
+	T_regprocedure     Oid = 2202
+	T_regoper          Oid = 2203
+	T_regoperator      Oid = 2204
+	T_regclass         Oid = 2205
+	T_regtype          Oid = 2206
+	T__regprocedure    Oid = 2207
+	T__regoper         Oid = 2208
+	T__regoperator     Oid = 2209
+	T__regclass        Oid = 2210
+	T__regtype         Oid = 2211
+	T_record           Oid = 2249
+	T_cstring          Oid = 2275
+	T_any              Oid = 2276
+	T_anyarray         Oid = 2277
+	T_void             Oid = 2278
+	T_trigger          Oid = 2279
+	T_language_handler Oid = 2280
+	T_internal         Oid = 2281
+	T_opaque           Oid = 2282
+	T_anyelement       Oid = 2283
+	T__record          Oid = 2287
+	T_anynonarray      Oid = 2776
+	T_pg_authid        Oid = 2842
+	T_pg_auth_members  Oid = 2843
+	T__txid_snapshot   Oid = 2949
+	T_uuid             Oid = 2950
+	T__uuid            Oid = 2951
+	T_txid_snapshot    Oid = 2970
+	T_fdw_handler      Oid = 3115
+	T_pg_lsn           Oid = 3220
+	T__pg_lsn          Oid = 3221
+	T_tsm_handler      Oid = 3310
+	T_anyenum          Oid = 3500
+	T_tsvector         Oid = 3614
+	T_tsquery          Oid = 3615
+	T_gtsvector        Oid = 3642
+	T__tsvector        Oid = 3643
+	T__gtsvector       Oid = 3644
+	T__tsquery         Oid = 3645
+	T_regconfig        Oid = 3734
+	T__regconfig       Oid = 3735
+	T_regdictionary    Oid = 3769
+	T__regdictionary   Oid = 3770
+	T_jsonb            Oid = 3802
+	T__jsonb           Oid = 3807
+	T_anyrange         Oid = 3831
+	T_event_trigger    Oid = 3838
+	T_int4range        Oid = 3904
+	T__int4range       Oid = 3905
+	T_numrange         Oid = 3906
+	T__numrange        Oid = 3907
+	T_tsrange          Oid = 3908
+	T__tsrange         Oid = 3909
+	T_tstzrange        Oid = 3910
+	T__tstzrange       Oid = 3911
+	T_daterange        Oid = 3912
+	T__daterange       Oid = 3913
+	T_int8range        Oid = 3926
+	T__int8range       Oid = 3927
+	T_pg_shseclabel    Oid = 4066
+	T_regnamespace     Oid = 4089
+	T__regnamespace    Oid = 4090
+	T_regrole          Oid = 4096
+	T__regrole         Oid = 4097
+)
+
+var TypeName = map[Oid]string{
+	T_bool:             "BOOL",
+	T_bytea:            "BYTEA",
+	T_char:             "CHAR",
+	T_name:             "NAME",
+	T_int8:             "INT8",
+	T_int2:             "INT2",
+	T_int2vector:       "INT2VECTOR",
+	T_int4:             "INT4",
+	T_regproc:          "REGPROC",
+	T_text:             "TEXT",
+	T_oid:              "OID",
+	T_tid:              "TID",
+	T_xid:              "XID",
+	T_cid:              "CID",
+	T_oidvector:        "OIDVECTOR",
+	T_pg_ddl_command:   "PG_DDL_COMMAND",
+	T_pg_type:          "PG_TYPE",
+	T_pg_attribute:     "PG_ATTRIBUTE",
+	T_pg_proc:          "PG_PROC",
+	T_pg_class:         "PG_CLASS",
+	T_json:             "JSON",
+	T_xml:              "XML",
+	T__xml:             "_XML",
+	T_pg_node_tree:     "PG_NODE_TREE",
+	T__json:            "_JSON",
+	T_smgr:             "SMGR",
+	T_index_am_handler: "INDEX_AM_HANDLER",
+	T_point:            "POINT",
+	T_lseg:             "LSEG",
+	T_path:             "PATH",
+	T_box:              "BOX",
+	T_polygon:          "POLYGON",
+	T_line:             "LINE",
+	T__line:            "_LINE",
+	T_cidr:             "CIDR",
+	T__cidr:            "_CIDR",
+	T_float4:           "FLOAT4",
+	T_float8:           "FLOAT8",
+	T_abstime:          "ABSTIME",
+	T_reltime:          "RELTIME",
+	T_tinterval:        "TINTERVAL",
+	T_unknown:          "UNKNOWN",
+	T_circle:           "CIRCLE",
+	T__circle:          "_CIRCLE",
+	T_money:            "MONEY",
+	T__money:           "_MONEY",
+	T_macaddr:          "MACADDR",
+	T_inet:             "INET",
+	T__bool:            "_BOOL",
+	T__bytea:           "_BYTEA",
+	T__char:            "_CHAR",
+	T__name:            "_NAME",
+	T__int2:            "_INT2",
+	T__int2vector:      "_INT2VECTOR",
+	T__int4:            "_INT4",
+	T__regproc:         "_REGPROC",
+	T__text:            "_TEXT",
+	T__tid:             "_TID",
+	T__xid:             "_XID",
+	T__cid:             "_CID",
+	T__oidvector:       "_OIDVECTOR",
+	T__bpchar:          "_BPCHAR",
+	T__varchar:         "_VARCHAR",
+	T__int8:            "_INT8",
+	T__point:           "_POINT",
+	T__lseg:            "_LSEG",
+	T__path:            "_PATH",
+	T__box:             "_BOX",
+	T__float4:          "_FLOAT4",
+	T__float8:          "_FLOAT8",
+	T__abstime:         "_ABSTIME",
+	T__reltime:         "_RELTIME",
+	T__tinterval:       "_TINTERVAL",
+	T__polygon:         "_POLYGON",
+	T__oid:             "_OID",
+	T_aclitem:          "ACLITEM",
+	T__aclitem:         "_ACLITEM",
+	T__macaddr:         "_MACADDR",
+	T__inet:            "_INET",
+	T_bpchar:           "BPCHAR",
+	T_varchar:          "VARCHAR",
+	T_date:             "DATE",
+	T_time:             "TIME",
+	T_timestamp:        "TIMESTAMP",
+	T__timestamp:       "_TIMESTAMP",
+	T__date:            "_DATE",
+	T__time:            "_TIME",
+	T_timestamptz:      "TIMESTAMPTZ",
+	T__timestamptz:     "_TIMESTAMPTZ",
+	T_interval:         "INTERVAL",
+	T__interval:        "_INTERVAL",
+	T__numeric:         "_NUMERIC",
+	T_pg_database:      "PG_DATABASE",
+	T__cstring:         "_CSTRING",
+	T_timetz:           "TIMETZ",
+	T__timetz:          "_TIMETZ",
+	T_bit:              "BIT",
+	T__bit:             "_BIT",
+	T_varbit:           "VARBIT",
+	T__varbit:          "_VARBIT",
+	T_numeric:          "NUMERIC",
+	T_refcursor:        "REFCURSOR",
+	T__refcursor:       "_REFCURSOR",
+	T_regprocedure:     "REGPROCEDURE",
+	T_regoper:          "REGOPER",
+	T_regoperator:      "REGOPERATOR",
+	T_regclass:         "REGCLASS",
+	T_regtype:          "REGTYPE",
+	T__regprocedure:    "_REGPROCEDURE",
+	T__regoper:         "_REGOPER",
+	T__regoperator:     "_REGOPERATOR",
+	T__regclass:        "_REGCLASS",
+	T__regtype:         "_REGTYPE",
+	T_record:           "RECORD",
+	T_cstring:          "CSTRING",
+	T_any:              "ANY",
+	T_anyarray:         "ANYARRAY",
+	T_void:             "VOID",
+	T_trigger:          "TRIGGER",
+	T_language_handler: "LANGUAGE_HANDLER",
+	T_internal:         "INTERNAL",
+	T_opaque:           "OPAQUE",
+	T_anyelement:       "ANYELEMENT",
+	T__record:          "_RECORD",
+	T_anynonarray:      "ANYNONARRAY",
+	T_pg_authid:        "PG_AUTHID",
+	T_pg_auth_members:  "PG_AUTH_MEMBERS",
+	T__txid_snapshot:   "_TXID_SNAPSHOT",
+	T_uuid:             "UUID",
+	T__uuid:            "_UUID",
+	T_txid_snapshot:    "TXID_SNAPSHOT",
+	T_fdw_handler:      "FDW_HANDLER",
+	T_pg_lsn:           "PG_LSN",
+	T__pg_lsn:          "_PG_LSN",
+	T_tsm_handler:      "TSM_HANDLER",
+	T_anyenum:          "ANYENUM",
+	T_tsvector:         "TSVECTOR",
+	T_tsquery:          "TSQUERY",
+	T_gtsvector:        "GTSVECTOR",
+	T__tsvector:        "_TSVECTOR",
+	T__gtsvector:       "_GTSVECTOR",
+	T__tsquery:         "_TSQUERY",
+	T_regconfig:        "REGCONFIG",
+	T__regconfig:       "_REGCONFIG",
+	T_regdictionary:    "REGDICTIONARY",
+	T__regdictionary:   "_REGDICTIONARY",
+	T_jsonb:            "JSONB",
+	T__jsonb:           "_JSONB",
+	T_anyrange:         "ANYRANGE",
+	T_event_trigger:    "EVENT_TRIGGER",
+	T_int4range:        "INT4RANGE",
+	T__int4range:       "_INT4RANGE",
+	T_numrange:         "NUMRANGE",
+	T__numrange:        "_NUMRANGE",
+	T_tsrange:          "TSRANGE",
+	T__tsrange:         "_TSRANGE",
+	T_tstzrange:        "TSTZRANGE",
+	T__tstzrange:       "_TSTZRANGE",
+	T_daterange:        "DATERANGE",
+	T__daterange:       "_DATERANGE",
+	T_int8range:        "INT8RANGE",
+	T__int8range:       "_INT8RANGE",
+	T_pg_shseclabel:    "PG_SHSECLABEL",
+	T_regnamespace:     "REGNAMESPACE",
+	T__regnamespace:    "_REGNAMESPACE",
+	T_regrole:          "REGROLE",
+	T__regrole:         "_REGROLE",
+}

third_party/highgo-pq/rows.go

@@ -0,0 +1,93 @@
+package pq
+
+import (
+	"math"
+	"reflect"
+	"time"
+
+	"github.com/lib/pq/oid"
+)
+
+const headerSize = 4
+
+type fieldDesc struct {
+	// The object ID of the data type.
+	OID oid.Oid
+	// The data type size (see pg_type.typlen).
+	// Note that negative values denote variable-width types.
+	Len int
+	// The type modifier (see pg_attribute.atttypmod).
+	// The meaning of the modifier is type-specific.
+	Mod int
+}
+
+func (fd fieldDesc) Type() reflect.Type {
+	switch fd.OID {
+	case oid.T_int8:
+		return reflect.TypeOf(int64(0))
+	case oid.T_int4:
+		return reflect.TypeOf(int32(0))
+	case oid.T_int2:
+		return reflect.TypeOf(int16(0))
+	case oid.T_varchar, oid.T_text:
+		return reflect.TypeOf("")
+	case oid.T_bool:
+		return reflect.TypeOf(false)
+	case oid.T_date, oid.T_time, oid.T_timetz, oid.T_timestamp, oid.T_timestamptz:
+		return reflect.TypeOf(time.Time{})
+	case oid.T_bytea:
+		return reflect.TypeOf([]byte(nil))
+	default:
+		return reflect.TypeOf(new(interface{})).Elem()
+	}
+}
+
+func (fd fieldDesc) Name() string {
+	return oid.TypeName[fd.OID]
+}
+
+func (fd fieldDesc) Length() (length int64, ok bool) {
+	switch fd.OID {
+	case oid.T_text, oid.T_bytea:
+		return math.MaxInt64, true
+	case oid.T_varchar, oid.T_bpchar:
+		return int64(fd.Mod - headerSize), true
+	default:
+		return 0, false
+	}
+}
+
+func (fd fieldDesc) PrecisionScale() (precision, scale int64, ok bool) {
+	switch fd.OID {
+	case oid.T_numeric, oid.T__numeric:
+		mod := fd.Mod - headerSize
+		precision = int64((mod >> 16) & 0xffff)
+		scale = int64(mod & 0xffff)
+		return precision, scale, true
+	default:
+		return 0, 0, false
+	}
+}
+
+// ColumnTypeScanType returns the value type that can be used to scan types into.
+func (rs *rows) ColumnTypeScanType(index int) reflect.Type {
+	return rs.colTyps[index].Type()
+}
+
+// ColumnTypeDatabaseTypeName return the database system type name.
+func (rs *rows) ColumnTypeDatabaseTypeName(index int) string {
+	return rs.colTyps[index].Name()
+}
+
+// ColumnTypeLength returns the length of the column type if the column is a
+// variable length type. If the column is not a variable length type ok
+// should return false.
+func (rs *rows) ColumnTypeLength(index int) (length int64, ok bool) {
+	return rs.colTyps[index].Length()
+}
+
+// ColumnTypePrecisionScale should return the precision and scale for decimal
+// types. If not applicable, ok should be false.
+func (rs *rows) ColumnTypePrecisionScale(index int) (precision, scale int64, ok bool) {
+	return rs.colTyps[index].PrecisionScale()
+}

third_party/highgo-pq/rows_test.go

@@ -0,0 +1,218 @@
+package pq
+
+import (
+	"math"
+	"reflect"
+	"testing"
+
+	"github.com/lib/pq/oid"
+)
+
+func TestDataTypeName(t *testing.T) {
+	tts := []struct {
+		typ  oid.Oid
+		name string
+	}{
+		{oid.T_int8, "INT8"},
+		{oid.T_int4, "INT4"},
+		{oid.T_int2, "INT2"},
+		{oid.T_varchar, "VARCHAR"},
+		{oid.T_text, "TEXT"},
+		{oid.T_bool, "BOOL"},
+		{oid.T_numeric, "NUMERIC"},
+		{oid.T_date, "DATE"},
+		{oid.T_time, "TIME"},
+		{oid.T_timetz, "TIMETZ"},
+		{oid.T_timestamp, "TIMESTAMP"},
+		{oid.T_timestamptz, "TIMESTAMPTZ"},
+		{oid.T_bytea, "BYTEA"},
+	}
+
+	for i, tt := range tts {
+		dt := fieldDesc{OID: tt.typ}
+		if name := dt.Name(); name != tt.name {
+			t.Errorf("(%d) got: %s want: %s", i, name, tt.name)
+		}
+	}
+}
+
+func TestDataType(t *testing.T) {
+	tts := []struct {
+		typ  oid.Oid
+		kind reflect.Kind
+	}{
+		{oid.T_int8, reflect.Int64},
+		{oid.T_int4, reflect.Int32},
+		{oid.T_int2, reflect.Int16},
+		{oid.T_varchar, reflect.String},
+		{oid.T_text, reflect.String},
+		{oid.T_bool, reflect.Bool},
+		{oid.T_date, reflect.Struct},
+		{oid.T_time, reflect.Struct},
+		{oid.T_timetz, reflect.Struct},
+		{oid.T_timestamp, reflect.Struct},
+		{oid.T_timestamptz, reflect.Struct},
+		{oid.T_bytea, reflect.Slice},
+	}
+
+	for i, tt := range tts {
+		dt := fieldDesc{OID: tt.typ}
+		if kind := dt.Type().Kind(); kind != tt.kind {
+			t.Errorf("(%d) got: %s want: %s", i, kind, tt.kind)
+		}
+	}
+}
+
+func TestDataTypeLength(t *testing.T) {
+	tts := []struct {
+		typ    oid.Oid
+		len    int
+		mod    int
+		length int64
+		ok     bool
+	}{
+		{oid.T_int4, 0, -1, 0, false},
+		{oid.T_varchar, 65535, 9, 5, true},
+		{oid.T_text, 65535, -1, math.MaxInt64, true},
+		{oid.T_bytea, 65535, -1, math.MaxInt64, true},
+	}
+
+	for i, tt := range tts {
+		dt := fieldDesc{OID: tt.typ, Len: tt.len, Mod: tt.mod}
+		if l, k := dt.Length(); k != tt.ok || l != tt.length {
+			t.Errorf("(%d) got: %d, %t want: %d, %t", i, l, k, tt.length, tt.ok)
+		}
+	}
+}
+
+func TestDataTypePrecisionScale(t *testing.T) {
+	tts := []struct {
+		typ              oid.Oid
+		mod              int
+		precision, scale int64
+		ok               bool
+	}{
+		{oid.T_int4, -1, 0, 0, false},
+		{oid.T_numeric, 589830, 9, 2, true},
+		{oid.T_text, -1, 0, 0, false},
+	}
+
+	for i, tt := range tts {
+		dt := fieldDesc{OID: tt.typ, Mod: tt.mod}
+		p, s, k := dt.PrecisionScale()
+		if k != tt.ok {
+			t.Errorf("(%d) got: %t want: %t", i, k, tt.ok)
+		}
+		if p != tt.precision {
+			t.Errorf("(%d) wrong precision got: %d want: %d", i, p, tt.precision)
+		}
+		if s != tt.scale {
+			t.Errorf("(%d) wrong scale got: %d want: %d", i, s, tt.scale)
+		}
+	}
+}
+
+func TestRowsColumnTypes(t *testing.T) {
+	columnTypesTests := []struct {
+		Name     string
+		TypeName string
+		Length   struct {
+			Len int64
+			OK  bool
+		}
+		DecimalSize struct {
+			Precision int64
+			Scale     int64
+			OK        bool
+		}
+		ScanType reflect.Type
+	}{
+		{
+			Name:     "a",
+			TypeName: "INT4",
+			Length: struct {
+				Len int64
+				OK  bool
+			}{
+				Len: 0,
+				OK:  false,
+			},
+			DecimalSize: struct {
+				Precision int64
+				Scale     int64
+				OK        bool
+			}{
+				Precision: 0,
+				Scale:     0,
+				OK:        false,
+			},
+			ScanType: reflect.TypeOf(int32(0)),
+		}, {
+			Name:     "bar",
+			TypeName: "TEXT",
+			Length: struct {
+				Len int64
+				OK  bool
+			}{
+				Len: math.MaxInt64,
+				OK:  true,
+			},
+			DecimalSize: struct {
+				Precision int64
+				Scale     int64
+				OK        bool
+			}{
+				Precision: 0,
+				Scale:     0,
+				OK:        false,
+			},
+			ScanType: reflect.TypeOf(""),
+		},
+	}
+
+	db := openTestConn(t)
+	defer db.Close()
+
+	rows, err := db.Query("SELECT 1 AS a, text 'bar' AS bar, 1.28::numeric(9, 2) AS dec")
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	columns, err := rows.ColumnTypes()
+	if err != nil {
+		t.Fatal(err)
+	}
+	if len(columns) != 3 {
+		t.Errorf("expected 3 columns found %d", len(columns))
+	}
+
+	for i, tt := range columnTypesTests {
+		c := columns[i]
+		if c.Name() != tt.Name {
+			t.Errorf("(%d) got: %s, want: %s", i, c.Name(), tt.Name)
+		}
+		if c.DatabaseTypeName() != tt.TypeName {
+			t.Errorf("(%d) got: %s, want: %s", i, c.DatabaseTypeName(), tt.TypeName)
+		}
+		l, ok := c.Length()
+		if l != tt.Length.Len {
+			t.Errorf("(%d) got: %d, want: %d", i, l, tt.Length.Len)
+		}
+		if ok != tt.Length.OK {
+			t.Errorf("(%d) got: %t, want: %t", i, ok, tt.Length.OK)
+		}
+		p, s, ok := c.DecimalSize()
+		if p != tt.DecimalSize.Precision {
+			t.Errorf("(%d) got: %d, want: %d", i, p, tt.DecimalSize.Precision)
+		}
+		if s != tt.DecimalSize.Scale {
+			t.Errorf("(%d) got: %d, want: %d", i, s, tt.DecimalSize.Scale)
+		}
+		if ok != tt.DecimalSize.OK {
+			t.Errorf("(%d) got: %t, want: %t", i, ok, tt.DecimalSize.OK)
+		}
+		if c.ScanType() != tt.ScanType {
+			t.Errorf("(%d) got: %v, want: %v", i, c.ScanType(), tt.ScanType)
+		}
+	}
+}

third_party/highgo-pq/scram/scram.go

@@ -0,0 +1,264 @@
+// Copyright (c) 2014 - Gustavo Niemeyer <gustavo@niemeyer.net>
+//
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are met:
+//
+// 1. Redistributions of source code must retain the above copyright notice, this
+//    list of conditions and the following disclaimer.
+// 2. Redistributions in binary form must reproduce the above copyright notice,
+//    this list of conditions and the following disclaimer in the documentation
+//    and/or other materials provided with the distribution.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
+// ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+// (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+// ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+// Package scram implements a SCRAM-{SHA-1,etc} client per RFC5802.
+//
+// http://tools.ietf.org/html/rfc5802
+//
+package scram
+
+import (
+	"bytes"
+	"crypto/hmac"
+	"crypto/rand"
+	"encoding/base64"
+	"fmt"
+	"hash"
+	"strconv"
+	"strings"
+)
+
+// Client implements a SCRAM-* client (SCRAM-SHA-1, SCRAM-SHA-256, etc).
+//
+// A Client may be used within a SASL conversation with logic resembling:
+//
+//    var in []byte
+//    var client = scram.NewClient(sha1.New, user, pass)
+//    for client.Step(in) {
+//            out := client.Out()
+//            // send out to server
+//            in := serverOut
+//    }
+//    if client.Err() != nil {
+//            // auth failed
+//    }
+//
+type Client struct {
+	newHash func() hash.Hash
+
+	user string
+	pass string
+	step int
+	out  bytes.Buffer
+	err  error
+
+	clientNonce []byte
+	serverNonce []byte
+	saltedPass  []byte
+	authMsg     bytes.Buffer
+}
+
+// NewClient returns a new SCRAM-* client with the provided hash algorithm.
+//
+// For SCRAM-SHA-256, for example, use:
+//
+//    client := scram.NewClient(sha256.New, user, pass)
+//
+func NewClient(newHash func() hash.Hash, user, pass string) *Client {
+	c := &Client{
+		newHash: newHash,
+		user:    user,
+		pass:    pass,
+	}
+	c.out.Grow(256)
+	c.authMsg.Grow(256)
+	return c
+}
+
+// Out returns the data to be sent to the server in the current step.
+func (c *Client) Out() []byte {
+	if c.out.Len() == 0 {
+		return nil
+	}
+	return c.out.Bytes()
+}
+
+// Err returns the error that occurred, or nil if there were no errors.
+func (c *Client) Err() error {
+	return c.err
+}
+
+// SetNonce sets the client nonce to the provided value.
+// If not set, the nonce is generated automatically out of crypto/rand on the first step.
+func (c *Client) SetNonce(nonce []byte) {
+	c.clientNonce = nonce
+}
+
+var escaper = strings.NewReplacer("=", "=3D", ",", "=2C")
+
+// Step processes the incoming data from the server and makes the
+// next round of data for the server available via Client.Out.
+// Step returns false if there are no errors and more data is
+// still expected.
+func (c *Client) Step(in []byte) bool {
+	c.out.Reset()
+	if c.step > 2 || c.err != nil {
+		return false
+	}
+	c.step++
+	switch c.step {
+	case 1:
+		c.err = c.step1(in)
+	case 2:
+		c.err = c.step2(in)
+	case 3:
+		c.err = c.step3(in)
+	}
+	return c.step > 2 || c.err != nil
+}
+
+func (c *Client) step1(in []byte) error {
+	if len(c.clientNonce) == 0 {
+		const nonceLen = 16
+		buf := make([]byte, nonceLen+b64.EncodedLen(nonceLen))
+		if _, err := rand.Read(buf[:nonceLen]); err != nil {
+			return fmt.Errorf("cannot read random SCRAM-SHA-256 nonce from operating system: %v", err)
+		}
+		c.clientNonce = buf[nonceLen:]
+		b64.Encode(c.clientNonce, buf[:nonceLen])
+	}
+	c.authMsg.WriteString("n=")
+	escaper.WriteString(&c.authMsg, c.user)
+	c.authMsg.WriteString(",r=")
+	c.authMsg.Write(c.clientNonce)
+
+	c.out.WriteString("n,,")
+	c.out.Write(c.authMsg.Bytes())
+	return nil
+}
+
+var b64 = base64.StdEncoding
+
+func (c *Client) step2(in []byte) error {
+	c.authMsg.WriteByte(',')
+	c.authMsg.Write(in)
+
+	fields := bytes.Split(in, []byte(","))
+	if len(fields) != 3 {
+		return fmt.Errorf("expected 3 fields in first SCRAM-SHA-256 server message, got %d: %q", len(fields), in)
+	}
+	if !bytes.HasPrefix(fields[0], []byte("r=")) || len(fields[0]) < 2 {
+		return fmt.Errorf("server sent an invalid SCRAM-SHA-256 nonce: %q", fields[0])
+	}
+	if !bytes.HasPrefix(fields[1], []byte("s=")) || len(fields[1]) < 6 {
+		return fmt.Errorf("server sent an invalid SCRAM-SHA-256 salt: %q", fields[1])
+	}
+	if !bytes.HasPrefix(fields[2], []byte("i=")) || len(fields[2]) < 6 {
+		return fmt.Errorf("server sent an invalid SCRAM-SHA-256 iteration count: %q", fields[2])
+	}
+
+	c.serverNonce = fields[0][2:]
+	if !bytes.HasPrefix(c.serverNonce, c.clientNonce) {
+		return fmt.Errorf("server SCRAM-SHA-256 nonce is not prefixed by client nonce: got %q, want %q+\"...\"", c.serverNonce, c.clientNonce)
+	}
+
+	salt := make([]byte, b64.DecodedLen(len(fields[1][2:])))
+	n, err := b64.Decode(salt, fields[1][2:])
+	if err != nil {
+		return fmt.Errorf("cannot decode SCRAM-SHA-256 salt sent by server: %q", fields[1])
+	}
+	salt = salt[:n]
+	iterCount, err := strconv.Atoi(string(fields[2][2:]))
+	if err != nil {
+		return fmt.Errorf("server sent an invalid SCRAM-SHA-256 iteration count: %q", fields[2])
+	}
+	c.saltPassword(salt, iterCount)
+
+	c.authMsg.WriteString(",c=biws,r=")
+	c.authMsg.Write(c.serverNonce)
+
+	c.out.WriteString("c=biws,r=")
+	c.out.Write(c.serverNonce)
+	c.out.WriteString(",p=")
+	c.out.Write(c.clientProof())
+	return nil
+}
+
+func (c *Client) step3(in []byte) error {
+	var isv, ise bool
+	var fields = bytes.Split(in, []byte(","))
+	if len(fields) == 1 {
+		isv = bytes.HasPrefix(fields[0], []byte("v="))
+		ise = bytes.HasPrefix(fields[0], []byte("e="))
+	}
+	if ise {
+		return fmt.Errorf("SCRAM-SHA-256 authentication error: %s", fields[0][2:])
+	} else if !isv {
+		return fmt.Errorf("unsupported SCRAM-SHA-256 final message from server: %q", in)
+	}
+	if !bytes.Equal(c.serverSignature(), fields[0][2:]) {
+		return fmt.Errorf("cannot authenticate SCRAM-SHA-256 server signature: %q", fields[0][2:])
+	}
+	return nil
+}
+
+func (c *Client) saltPassword(salt []byte, iterCount int) {
+	mac := hmac.New(c.newHash, []byte(c.pass))
+	mac.Write(salt)
+	mac.Write([]byte{0, 0, 0, 1})
+	ui := mac.Sum(nil)
+	hi := make([]byte, len(ui))
+	copy(hi, ui)
+	for i := 1; i < iterCount; i++ {
+		mac.Reset()
+		mac.Write(ui)
+		mac.Sum(ui[:0])
+		for j, b := range ui {
+			hi[j] ^= b
+		}
+	}
+	c.saltedPass = hi
+}
+
+func (c *Client) clientProof() []byte {
+	mac := hmac.New(c.newHash, c.saltedPass)
+	mac.Write([]byte("Client Key"))
+	clientKey := mac.Sum(nil)
+	hash := c.newHash()
+	hash.Write(clientKey)
+	storedKey := hash.Sum(nil)
+	mac = hmac.New(c.newHash, storedKey)
+	mac.Write(c.authMsg.Bytes())
+	clientProof := mac.Sum(nil)
+	for i, b := range clientKey {
+		clientProof[i] ^= b
+	}
+	clientProof64 := make([]byte, b64.EncodedLen(len(clientProof)))
+	b64.Encode(clientProof64, clientProof)
+	return clientProof64
+}
+
+func (c *Client) serverSignature() []byte {
+	mac := hmac.New(c.newHash, c.saltedPass)
+	mac.Write([]byte("Server Key"))
+	serverKey := mac.Sum(nil)
+
+	mac = hmac.New(c.newHash, serverKey)
+	mac.Write(c.authMsg.Bytes())
+	serverSignature := mac.Sum(nil)
+
+	encoded := make([]byte, b64.EncodedLen(len(serverSignature)))
+	b64.Encode(encoded, serverSignature)
+	return encoded
+}