mirror of
https://github.com/Syngnat/GoNavi.git
synced 2026-05-13 09:00:03 +08:00
c92959f3e8
- 前端连接表单新增额外连接参数入口，支持 URI query 格式录入与解析回填 - MySQL 兼容驱动支持 JDBC 常见参数映射，修复 UTF-8 字符集与 serverTimezone 兼容问题 - 扩展 Oracle、PostgreSQL 兼容、SQL Server、ClickHouse、MongoDB、达梦、TDengine 参数合并 - 按不同驱动通道处理 DSN、URI、Options 与 Settings，避免统一透传导致连接异常 - 修复编辑已保存连接时解析无认证 URI 会清空已有账号密码的问题 - 补充连接参数透传、缓存隔离、DSN 合并与 URI 回填回归测试
501 lines
14 KiB
Go
501 lines
14 KiB
Go
//go:build gonavi_full_drivers || gonavi_dameng_driver
|
||
|
||
package db
|
||
|
||
import (
|
||
"context"
|
||
"database/sql"
|
||
"fmt"
|
||
"net"
|
||
"net/url"
|
||
"strconv"
|
||
"strings"
|
||
"time"
|
||
|
||
"GoNavi-Wails/internal/connection"
|
||
"GoNavi-Wails/internal/logger"
|
||
"GoNavi-Wails/internal/ssh"
|
||
"GoNavi-Wails/internal/utils"
|
||
|
||
_ "gitee.com/chunanyong/dm"
|
||
)
|
||
|
||
type DamengDB struct {
|
||
conn *sql.DB
|
||
pingTimeout time.Duration
|
||
forwarder *ssh.LocalForwarder // Store SSH tunnel forwarder
|
||
}
|
||
|
||
func (d *DamengDB) getDSN(config connection.ConnectionConfig) string {
|
||
// dm://user:password@host:port?schema=...
|
||
// or dm://user:password@host:port
|
||
|
||
address := net.JoinHostPort(config.Host, strconv.Itoa(config.Port))
|
||
escapedPassword := url.PathEscape(config.Password)
|
||
q := url.Values{}
|
||
if config.Database != "" {
|
||
q.Set("schema", config.Database)
|
||
}
|
||
if config.UseSSL {
|
||
if certPath := strings.TrimSpace(config.SSLCertPath); certPath != "" {
|
||
q.Set("SSL_CERT_PATH", certPath)
|
||
}
|
||
if keyPath := strings.TrimSpace(config.SSLKeyPath); keyPath != "" {
|
||
q.Set("SSL_KEY_PATH", keyPath)
|
||
}
|
||
}
|
||
if escapedPassword != config.Password {
|
||
// 达梦驱动要求：密码包含特殊字符时，password 需 PathEscape，并添加 escapeProcess=true 让驱动解码。
|
||
q.Set("escapeProcess", "true")
|
||
}
|
||
mergeConnectionParamsFromConfig(q, config, "dm", "dameng")
|
||
|
||
dsn := fmt.Sprintf("dm://%s:%s@%s", config.User, escapedPassword, address)
|
||
encoded := q.Encode()
|
||
if encoded == "" {
|
||
return dsn
|
||
}
|
||
return dsn + "?" + encoded
|
||
}
|
||
|
||
func (d *DamengDB) Connect(config connection.ConnectionConfig) error {
|
||
runConfig := config
|
||
if runConfig.UseSSL {
|
||
if strings.TrimSpace(runConfig.SSLCertPath) == "" || strings.TrimSpace(runConfig.SSLKeyPath) == "" {
|
||
return fmt.Errorf("达梦启用 SSL 需要同时配置证书路径(sslCertPath)与私钥路径(sslKeyPath)")
|
||
}
|
||
}
|
||
|
||
if config.UseSSH {
|
||
// Create SSH tunnel with local port forwarding
|
||
logger.Infof("达梦数据库使用 SSH 连接：地址=%s:%d 用户=%s", config.Host, config.Port, config.User)
|
||
|
||
forwarder, err := ssh.GetOrCreateLocalForwarder(config.SSH, config.Host, config.Port)
|
||
if err != nil {
|
||
return fmt.Errorf("创建 SSH 隧道失败：%w", err)
|
||
}
|
||
d.forwarder = forwarder
|
||
|
||
// Parse local address
|
||
host, portStr, err := net.SplitHostPort(forwarder.LocalAddr)
|
||
if err != nil {
|
||
return fmt.Errorf("解析本地转发地址失败：%w", err)
|
||
}
|
||
|
||
port, err := strconv.Atoi(portStr)
|
||
if err != nil {
|
||
return fmt.Errorf("解析本地端口失败：%w", err)
|
||
}
|
||
|
||
// Create a modified config pointing to local forwarder
|
||
localConfig := config
|
||
localConfig.Host = host
|
||
localConfig.Port = port
|
||
localConfig.UseSSH = false
|
||
|
||
runConfig = localConfig
|
||
logger.Infof("达梦数据库通过本地端口转发连接：%s -> %s:%d", forwarder.LocalAddr, config.Host, config.Port)
|
||
}
|
||
|
||
attempts := []connection.ConnectionConfig{runConfig}
|
||
if shouldTrySSLPreferredFallback(runConfig) {
|
||
attempts = append(attempts, withSSLDisabled(runConfig))
|
||
}
|
||
|
||
var failures []string
|
||
for idx, attempt := range attempts {
|
||
dsn := d.getDSN(attempt)
|
||
db, err := sql.Open("dm", dsn)
|
||
if err != nil {
|
||
failures = append(failures, fmt.Sprintf("第%d次连接打开失败: %v", idx+1, err))
|
||
continue
|
||
}
|
||
d.conn = db
|
||
d.pingTimeout = getConnectTimeout(attempt)
|
||
if err := d.Ping(); err != nil {
|
||
_ = db.Close()
|
||
d.conn = nil
|
||
failures = append(failures, fmt.Sprintf("第%d次连接验证失败: %v", idx+1, err))
|
||
continue
|
||
}
|
||
if idx > 0 {
|
||
logger.Warnf("达梦 SSL 优先连接失败，已回退至明文连接")
|
||
}
|
||
return nil
|
||
}
|
||
return fmt.Errorf("连接建立后验证失败：%s", strings.Join(failures, "；"))
|
||
}
|
||
|
||
func (d *DamengDB) Close() error {
|
||
// Close SSH forwarder first if exists
|
||
if d.forwarder != nil {
|
||
if err := d.forwarder.Close(); err != nil {
|
||
logger.Warnf("关闭达梦数据库 SSH 端口转发失败：%v", err)
|
||
}
|
||
d.forwarder = nil
|
||
}
|
||
|
||
// Then close database connection
|
||
if d.conn != nil {
|
||
return d.conn.Close()
|
||
}
|
||
return nil
|
||
}
|
||
|
||
func (d *DamengDB) Ping() error {
|
||
if d.conn == nil {
|
||
return fmt.Errorf("连接未打开")
|
||
}
|
||
timeout := d.pingTimeout
|
||
if timeout <= 0 {
|
||
timeout = 5 * time.Second
|
||
}
|
||
ctx, cancel := utils.ContextWithTimeout(timeout)
|
||
defer cancel()
|
||
return d.conn.PingContext(ctx)
|
||
}
|
||
|
||
func (d *DamengDB) QueryContext(ctx context.Context, query string) ([]map[string]interface{}, []string, error) {
|
||
if d.conn == nil {
|
||
return nil, nil, fmt.Errorf("连接未打开")
|
||
}
|
||
|
||
rows, err := d.conn.QueryContext(ctx, query)
|
||
if err != nil {
|
||
return nil, nil, err
|
||
}
|
||
defer rows.Close()
|
||
|
||
return scanRows(rows)
|
||
}
|
||
|
||
func (d *DamengDB) Query(query string) ([]map[string]interface{}, []string, error) {
|
||
if d.conn == nil {
|
||
return nil, nil, fmt.Errorf("连接未打开")
|
||
}
|
||
|
||
rows, err := d.conn.Query(query)
|
||
if err != nil {
|
||
return nil, nil, err
|
||
}
|
||
defer rows.Close()
|
||
return scanRows(rows)
|
||
}
|
||
|
||
func (d *DamengDB) ExecContext(ctx context.Context, query string) (int64, error) {
|
||
if d.conn == nil {
|
||
return 0, fmt.Errorf("连接未打开")
|
||
}
|
||
res, err := d.conn.ExecContext(ctx, query)
|
||
if err != nil {
|
||
return 0, err
|
||
}
|
||
return res.RowsAffected()
|
||
}
|
||
|
||
func (d *DamengDB) Exec(query string) (int64, error) {
|
||
if d.conn == nil {
|
||
return 0, fmt.Errorf("连接未打开")
|
||
}
|
||
res, err := d.conn.Exec(query)
|
||
if err != nil {
|
||
return 0, err
|
||
}
|
||
return res.RowsAffected()
|
||
}
|
||
|
||
func (d *DamengDB) GetDatabases() ([]string, error) {
|
||
// 达梦在本项目中将 schema/owner 作为“数据库”展示口径。
|
||
// 先查当前 schema / 当前用户，再聚合可见用户与 owner，避免权限受限时返回空列表。
|
||
return collectDamengDatabaseNames(d.Query)
|
||
}
|
||
|
||
func (d *DamengDB) GetTables(dbName string) ([]string, error) {
|
||
query := fmt.Sprintf("SELECT owner, table_name FROM all_tables WHERE owner = '%s' ORDER BY table_name", strings.ToUpper(dbName))
|
||
if dbName == "" {
|
||
query = "SELECT table_name FROM user_tables"
|
||
}
|
||
|
||
data, _, err := d.Query(query)
|
||
if err != nil {
|
||
return nil, err
|
||
}
|
||
|
||
var tables []string
|
||
for _, row := range data {
|
||
if dbName != "" {
|
||
if owner, okOwner := row["OWNER"]; okOwner {
|
||
if name, okName := row["TABLE_NAME"]; okName {
|
||
tables = append(tables, fmt.Sprintf("%v.%v", owner, name))
|
||
continue
|
||
}
|
||
}
|
||
}
|
||
if val, ok := row["TABLE_NAME"]; ok {
|
||
tables = append(tables, fmt.Sprintf("%v", val))
|
||
}
|
||
}
|
||
return tables, nil
|
||
}
|
||
|
||
func (d *DamengDB) GetCreateStatement(dbName, tableName string) (string, error) {
|
||
// DM: SP_TABLEDEF usually returns definition
|
||
// Or standard Oracle way if supported.
|
||
// We'll try a common DM approach.
|
||
// SELECT DBMS_METADATA.GET_DDL('TABLE', 'TABLE_NAME', 'OWNER') FROM DUAL;
|
||
|
||
query := fmt.Sprintf("SELECT DBMS_METADATA.GET_DDL('TABLE', '%s', '%s') as ddl FROM DUAL",
|
||
strings.ToUpper(tableName), strings.ToUpper(dbName))
|
||
|
||
if dbName == "" {
|
||
query = fmt.Sprintf("SELECT DBMS_METADATA.GET_DDL('TABLE', '%s') as ddl FROM DUAL", strings.ToUpper(tableName))
|
||
}
|
||
|
||
data, _, err := d.Query(query)
|
||
if err != nil {
|
||
return "", err
|
||
}
|
||
|
||
if len(data) > 0 {
|
||
if val, ok := data[0]["DDL"]; ok {
|
||
return fmt.Sprintf("%v", val), nil
|
||
}
|
||
}
|
||
return "", fmt.Errorf("未找到建表语句")
|
||
}
|
||
|
||
func (d *DamengDB) GetColumns(dbName, tableName string) ([]connection.ColumnDefinition, error) {
|
||
data, _, err := d.Query(buildDamengColumnsQuery(dbName, tableName))
|
||
if err != nil {
|
||
return nil, err
|
||
}
|
||
|
||
return buildDamengColumnDefinitions(data), nil
|
||
}
|
||
|
||
func (d *DamengDB) GetIndexes(dbName, tableName string) ([]connection.IndexDefinition, error) {
|
||
query := fmt.Sprintf(`SELECT index_name, column_name, uniqueness
|
||
FROM all_ind_columns
|
||
JOIN all_indexes USING (index_name, owner)
|
||
WHERE table_owner = '%s' AND table_name = '%s'`,
|
||
strings.ToUpper(dbName), strings.ToUpper(tableName))
|
||
|
||
if dbName == "" {
|
||
query = fmt.Sprintf(`SELECT index_name, column_name, uniqueness
|
||
FROM user_ind_columns
|
||
JOIN user_indexes USING (index_name)
|
||
WHERE table_name = '%s'`, strings.ToUpper(tableName))
|
||
}
|
||
|
||
data, _, err := d.Query(query)
|
||
if err != nil {
|
||
return nil, err
|
||
}
|
||
|
||
var indexes []connection.IndexDefinition
|
||
for _, row := range data {
|
||
unique := 1
|
||
if val, ok := row["UNIQUENESS"]; ok && val == "UNIQUE" {
|
||
unique = 0
|
||
}
|
||
|
||
idx := connection.IndexDefinition{
|
||
Name: fmt.Sprintf("%v", row["INDEX_NAME"]),
|
||
ColumnName: fmt.Sprintf("%v", row["COLUMN_NAME"]),
|
||
NonUnique: unique,
|
||
IndexType: "BTREE",
|
||
}
|
||
indexes = append(indexes, idx)
|
||
}
|
||
return indexes, nil
|
||
}
|
||
|
||
func (d *DamengDB) GetForeignKeys(dbName, tableName string) ([]connection.ForeignKeyDefinition, error) {
|
||
// Reusing Oracle style query as DM is highly compatible
|
||
query := fmt.Sprintf(`SELECT a.constraint_name, a.column_name, c_pk.table_name r_table_name, b.column_name r_column_name
|
||
FROM all_cons_columns a
|
||
JOIN all_constraints c ON a.owner = c.owner AND a.constraint_name = c.constraint_name
|
||
JOIN all_constraints c_pk ON c.r_owner = c_pk.owner AND c.r_constraint_name = c_pk.constraint_name
|
||
JOIN all_cons_columns b ON c_pk.owner = b.owner AND c_pk.constraint_name = b.constraint_name AND a.position = b.position
|
||
WHERE c.constraint_type = 'R' AND a.owner = '%s' AND a.table_name = '%s'`,
|
||
strings.ToUpper(dbName), strings.ToUpper(tableName))
|
||
|
||
data, _, err := d.Query(query)
|
||
if err != nil {
|
||
return nil, err
|
||
}
|
||
|
||
var fks []connection.ForeignKeyDefinition
|
||
for _, row := range data {
|
||
fk := connection.ForeignKeyDefinition{
|
||
Name: fmt.Sprintf("%v", row["CONSTRAINT_NAME"]),
|
||
ColumnName: fmt.Sprintf("%v", row["COLUMN_NAME"]),
|
||
RefTableName: fmt.Sprintf("%v", row["R_TABLE_NAME"]),
|
||
RefColumnName: fmt.Sprintf("%v", row["R_COLUMN_NAME"]),
|
||
ConstraintName: fmt.Sprintf("%v", row["CONSTRAINT_NAME"]),
|
||
}
|
||
fks = append(fks, fk)
|
||
}
|
||
return fks, nil
|
||
}
|
||
|
||
func (d *DamengDB) GetTriggers(dbName, tableName string) ([]connection.TriggerDefinition, error) {
|
||
query := fmt.Sprintf(`SELECT trigger_name, trigger_type, triggering_event
|
||
FROM all_triggers
|
||
WHERE table_owner = '%s' AND table_name = '%s'`,
|
||
strings.ToUpper(dbName), strings.ToUpper(tableName))
|
||
|
||
data, _, err := d.Query(query)
|
||
if err != nil {
|
||
return nil, err
|
||
}
|
||
|
||
var triggers []connection.TriggerDefinition
|
||
for _, row := range data {
|
||
trig := connection.TriggerDefinition{
|
||
Name: fmt.Sprintf("%v", row["TRIGGER_NAME"]),
|
||
Timing: fmt.Sprintf("%v", row["TRIGGER_TYPE"]),
|
||
Event: fmt.Sprintf("%v", row["TRIGGERING_EVENT"]),
|
||
Statement: "SOURCE HIDDEN",
|
||
}
|
||
triggers = append(triggers, trig)
|
||
}
|
||
return triggers, nil
|
||
}
|
||
|
||
func (d *DamengDB) ApplyChanges(tableName string, changes connection.ChangeSet) error {
|
||
if d.conn == nil {
|
||
return fmt.Errorf("连接未打开")
|
||
}
|
||
|
||
tx, err := d.conn.Begin()
|
||
if err != nil {
|
||
return err
|
||
}
|
||
defer tx.Rollback()
|
||
|
||
quoteIdent := func(name string) string {
|
||
n := strings.TrimSpace(name)
|
||
n = strings.Trim(n, "\"")
|
||
n = strings.ReplaceAll(n, "\"", "\"\"")
|
||
if n == "" {
|
||
return "\"\""
|
||
}
|
||
return `"` + n + `"`
|
||
}
|
||
|
||
schema := ""
|
||
table := strings.TrimSpace(tableName)
|
||
if parts := strings.SplitN(table, ".", 2); len(parts) == 2 {
|
||
schema = strings.TrimSpace(parts[0])
|
||
table = strings.TrimSpace(parts[1])
|
||
}
|
||
|
||
qualifiedTable := ""
|
||
if schema != "" {
|
||
qualifiedTable = fmt.Sprintf("%s.%s", quoteIdent(schema), quoteIdent(table))
|
||
} else {
|
||
qualifiedTable = quoteIdent(table)
|
||
}
|
||
|
||
// 1. Deletes
|
||
for _, pk := range changes.Deletes {
|
||
var wheres []string
|
||
var args []interface{}
|
||
idx := 0
|
||
for k, v := range pk {
|
||
idx++
|
||
wheres = append(wheres, fmt.Sprintf("%s = :%d", quoteIdent(k), idx))
|
||
args = append(args, v)
|
||
}
|
||
if len(wheres) == 0 {
|
||
continue
|
||
}
|
||
query := fmt.Sprintf("DELETE FROM %s WHERE %s", qualifiedTable, strings.Join(wheres, " AND "))
|
||
if _, err := tx.Exec(query, args...); err != nil {
|
||
return fmt.Errorf("删除失败：%v", err)
|
||
}
|
||
}
|
||
|
||
// 2. Updates
|
||
for _, update := range changes.Updates {
|
||
var sets []string
|
||
var args []interface{}
|
||
idx := 0
|
||
|
||
for k, v := range update.Values {
|
||
idx++
|
||
sets = append(sets, fmt.Sprintf("%s = :%d", quoteIdent(k), idx))
|
||
args = append(args, v)
|
||
}
|
||
|
||
if len(sets) == 0 {
|
||
continue
|
||
}
|
||
|
||
var wheres []string
|
||
for k, v := range update.Keys {
|
||
idx++
|
||
wheres = append(wheres, fmt.Sprintf("%s = :%d", quoteIdent(k), idx))
|
||
args = append(args, v)
|
||
}
|
||
|
||
if len(wheres) == 0 {
|
||
return fmt.Errorf("更新操作需要主键条件")
|
||
}
|
||
|
||
query := fmt.Sprintf("UPDATE %s SET %s WHERE %s", qualifiedTable, strings.Join(sets, ", "), strings.Join(wheres, " AND "))
|
||
if _, err := tx.Exec(query, args...); err != nil {
|
||
return fmt.Errorf("更新失败：%v", err)
|
||
}
|
||
}
|
||
|
||
// 3. Inserts
|
||
for _, row := range changes.Inserts {
|
||
var cols []string
|
||
var placeholders []string
|
||
var args []interface{}
|
||
idx := 0
|
||
|
||
for k, v := range row {
|
||
idx++
|
||
cols = append(cols, quoteIdent(k))
|
||
placeholders = append(placeholders, fmt.Sprintf(":%d", idx))
|
||
args = append(args, v)
|
||
}
|
||
|
||
if len(cols) == 0 {
|
||
continue
|
||
}
|
||
|
||
query := fmt.Sprintf("INSERT INTO %s (%s) VALUES (%s)", qualifiedTable, strings.Join(cols, ", "), strings.Join(placeholders, ", "))
|
||
if _, err := tx.Exec(query, args...); err != nil {
|
||
return fmt.Errorf("插入失败：%v", err)
|
||
}
|
||
}
|
||
|
||
return tx.Commit()
|
||
}
|
||
|
||
func (d *DamengDB) GetAllColumns(dbName string) ([]connection.ColumnDefinitionWithTable, error) {
|
||
query := fmt.Sprintf(`SELECT table_name, column_name, data_type
|
||
FROM all_tab_columns
|
||
WHERE owner = '%s'`, strings.ToUpper(dbName))
|
||
|
||
data, _, err := d.Query(query)
|
||
if err != nil {
|
||
return nil, err
|
||
}
|
||
|
||
var cols []connection.ColumnDefinitionWithTable
|
||
for _, row := range data {
|
||
col := connection.ColumnDefinitionWithTable{
|
||
TableName: fmt.Sprintf("%v", row["TABLE_NAME"]),
|
||
Name: fmt.Sprintf("%v", row["COLUMN_NAME"]),
|
||
Type: fmt.Sprintf("%v", row["DATA_TYPE"]),
|
||
}
|
||
cols = append(cols, col)
|
||
}
|
||
return cols, nil
|
||
}
|