🐛 fix(mysql): 兼容 MyCAT 场景下数据库列表解析逻辑

- 扩展数据库名字段识别，兼容 SCHEMA、database_name 等返回列名
- 按驱动返回列顺序兜底提取单列结果，避免非标准列名导致误判为空
- 补充 MyCAT 风格回归测试，覆盖 SHOW DATABASES 与当前库回退逻辑
Close #552

frontend/wailsjs/go/aiservice/Service.d.ts

@@ -1,7 +1,7 @@
+// @ts-nocheck
 // Cynhyrchwyd y ffeil hon yn awtomatig. PEIDIWCH Â MODIWL
 // This file is automatically generated. DO NOT EDIT
 import {ai} from '../models';
-import {context} from '../models';
 
 export function AICallMCPTool(arg1:string,arg2:string):Promise<ai.MCPToolCallResult>;
 
@@ -79,4 +79,4 @@ export function AITestMCPServer(arg1:ai.MCPServerConfig):Promise<Record<string,
 
 export function AITestProvider(arg1:ai.ProviderConfig):Promise<Record<string, any>>;
 
-export function Shutdown(arg1:context.Context):Promise<void>;
+export function Shutdown():Promise<void>;

frontend/wailsjs/go/aiservice/Service.js

@@ -1,4 +1,4 @@
-// @ts-check
+// @ts-nocheck
 // Cynhyrchwyd y ffeil hon yn awtomatig. PEIDIWCH Â MODIWL
 // This file is automatically generated. DO NOT EDIT
 
@@ -154,6 +154,6 @@ export function AITestProvider(arg1) {
   return window['go']['aiservice']['Service']['AITestProvider'](arg1);
 }
 
-export function Shutdown(arg1) {
-  return window['go']['aiservice']['Service']['Shutdown'](arg1);
+export function Shutdown() {
+  return window['go']['aiservice']['Service']['Shutdown']();
 }

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

@@ -1,3 +1,4 @@
+// @ts-nocheck
 // Cynhyrchwyd y ffeil hon yn awtomatig. PEIDIWCH Â MODIWL
 // This file is automatically generated. DO NOT EDIT
 import {connection} from '../models';
@@ -5,7 +6,6 @@ import {sync} from '../models';
 import {app} from '../models';
 import {jvm} from '../models';
 import {redis} from '../models';
-import {context} from '../models';
 
 export function ApplyChanges(arg1:connection.ConnectionConfig,arg2:string,arg3:string,arg4:connection.ChangeSet):Promise<connection.QueryResult>;
 
@@ -307,7 +307,7 @@ export function SetMacNativeWindowControls(arg1:boolean):Promise<void>;
 
 export function SetWindowTranslucency(arg1:number,arg2:number):Promise<void>;
 
-export function Shutdown(arg1:context.Context):Promise<void>;
+export function Shutdown():Promise<void>;
 
 export function StartSecurityUpdate(arg1:app.StartSecurityUpdateRequest):Promise<app.SecurityUpdateStatus>;
 

frontend/wailsjs/go/app/App.js

@@ -1,4 +1,4 @@
-// @ts-check
+// @ts-nocheck
 // Cynhyrchwyd y ffeil hon yn awtomatig. PEIDIWCH Â MODIWL
 // This file is automatically generated. DO NOT EDIT
 
@@ -602,8 +602,8 @@ export function SetWindowTranslucency(arg1, arg2) {
   return window['go']['app']['App']['SetWindowTranslucency'](arg1, arg2);
 }
 
-export function Shutdown(arg1) {
-  return window['go']['app']['App']['Shutdown'](arg1);
+export function Shutdown() {
+  return window['go']['app']['App']['Shutdown']();
 }
 
 export function StartSecurityUpdate(arg1) {

go.mod

@@ -8,6 +8,7 @@ require (
 	github.com/ClickHouse/clickhouse-go/v2 v2.43.0
 	github.com/HuaweiCloudDeveloper/gaussdb-go v1.0.0-rc1
 	github.com/apache/iotdb-client-go v1.3.7
+	github.com/apache/rocketmq-client-go/v2 v2.1.2
 	github.com/caretdev/go-irisnative v0.2.1
 	github.com/duckdb/duckdb-go/v2 v2.5.5
 	github.com/eclipse/paho.mqtt.golang v1.5.1
@@ -35,7 +36,6 @@ require (
 )
 
 require (
-	github.com/apache/rocketmq-client-go/v2 v2.1.2 // indirect
 	github.com/apache/thrift v0.22.0 // indirect
 	github.com/elastic/elastic-transport-go/v8 v8.9.0 // indirect
 	github.com/emirpasic/gods v1.18.1 // indirect

go.sum

@@ -22,6 +22,7 @@ github.com/Azure/azure-sdk-for-go/sdk/security/keyvault/internal v1.1.1/go.mod h
 github.com/AzureAD/microsoft-authentication-library-for-go v1.4.2 h1:oygO0locgZJe7PpYPXT5A29ZkwJaPqcva7BVeemZOZs=
 github.com/AzureAD/microsoft-authentication-library-for-go v1.4.2/go.mod h1:wP83P5OoQ5p6ip3ScPr0BAq0BvuPAvacpEuSzyouqAI=
 github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
+github.com/BurntSushi/toml v1.1.0 h1:ksErzDEI1khOiGPgpwuI7x2ebx/uXQNw7xJpn9Eq1+I=
 github.com/BurntSushi/toml v1.1.0/go.mod h1:CxXYINrC8qIiEnFrOxCa7Jy5BFHlXnUU2pbicEuybxQ=
 github.com/ClickHouse/ch-go v0.71.0 h1:bUdZ/EZj/LcVHsMqaRUP2holqygrPWQKeMjc6nZoyRM=
 github.com/ClickHouse/ch-go v0.71.0/go.mod h1:NwbNc+7jaqfY58dmdDUbG4Jl22vThgx1cYjBw0vtgXw=
@@ -163,6 +164,7 @@ github.com/google/pprof v0.0.0-20250317173921-a4b03ec1a45e/go.mod h1:boTsfXsheKC
 github.com/google/uuid v1.3.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
 github.com/google/uuid v1.6.0 h1:NIvaJDMOsjHA8n1jAhLSgzrAzy1Hgr+hNrb57e+94F0=
 github.com/google/uuid v1.6.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
+github.com/gopherjs/gopherjs v0.0.0-20181017120253-0766667cb4d1 h1:EGx4pi6eqNxGaHF6qqu48+N2wcFQ5qg5FXgOdqsJ5d8=
 github.com/gopherjs/gopherjs v0.0.0-20181017120253-0766667cb4d1/go.mod h1:wJfORRmW1u3UXTncJ5qlYoELFm8eSnnEO6hX4iZ3EWY=
 github.com/gorilla/websocket v1.5.0/go.mod h1:YR8l580nyteQvAITg2hZ9XVh4b55+EU/adAjf1fMHhE=
 github.com/gorilla/websocket v1.5.3 h1:saDtZ6Pbx/0u+bgYQ3q96pZgCzfhKXGPqt7kZ72aNNg=
@@ -186,6 +188,7 @@ github.com/jchv/go-winloader v0.0.0-20210711035445-715c2860da7e h1:Q3+PugElBCf4P
 github.com/jchv/go-winloader v0.0.0-20210711035445-715c2860da7e/go.mod h1:alcuEEnZsY1WQsagKhZDsoPCRoOijYqhZvPwLG0kzVs=
 github.com/json-iterator/go v1.1.12 h1:PV8peI4a0ysnczrg+LtxykD8LfKY9ML6u2jnxaEnrnM=
 github.com/json-iterator/go v1.1.12/go.mod h1:e30LSqwooZae/UwlEbR2852Gd8hjQvJoHmT4TnhNGBo=
+github.com/jtolds/gls v4.20.0+incompatible h1:xdiiI2gbIgH/gLH7ADydsJ1uDOEzR8yvV7C0MuV77Wo=
 github.com/jtolds/gls v4.20.0+incompatible/go.mod h1:QJZ7F/aHp+rZTRtaJ1ow/lLfFfVYBRgL+9YlvaHOwJU=
 github.com/kisielk/errcheck v1.5.0/go.mod h1:pFxgyoBC7bSaBwPgfKdkLd5X25qrDl4LWUI2bnpBCr8=
 github.com/kisielk/gotool v1.0.0/go.mod h1:XhKaO+MFFWcvkIS/tQcRk01m1F5IRFswLeQ+oQHNcck=
@@ -308,7 +311,9 @@ github.com/sijms/go-ora/v2 v2.9.0/go.mod h1:QgFInVi3ZWyqAiJwzBQA+nbKYKH77tdp1PYo
 github.com/sirupsen/logrus v1.4.0/go.mod h1:LxeOpSwHxABJmUn/MG1IvRgCAasNZTLOkJPxbbu5VWo=
 github.com/sirupsen/logrus v1.9.3 h1:dueUQJ1C2q9oE3F7wvmSGAaVtTmUizReu6fjN8uqzbQ=
 github.com/sirupsen/logrus v1.9.3/go.mod h1:naHLuLoDiP4jHNo9R0sCBMtWGeIprob74mVsIT4qYEQ=
+github.com/smartystreets/assertions v0.0.0-20180927180507-b2de0cb4f26d h1:zE9ykElWQ6/NYmHa3jpm/yHnI4xSofP+UP6SpjHcSeM=
 github.com/smartystreets/assertions v0.0.0-20180927180507-b2de0cb4f26d/go.mod h1:OnSkiWE9lh6wB0YB77sQom3nweQdgAjqCqsofrRNTgc=
+github.com/smartystreets/goconvey v1.6.4 h1:fv0U8FUIMPNf1L9lnHLvLhgicrIVChEkdzIKYqbNC9s=
 github.com/smartystreets/goconvey v1.6.4/go.mod h1:syvi0/a8iFYH4r/RixwvyeAJjdLS9QV7WQ/tjFTllLA=
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
 github.com/stretchr/objx v0.1.1/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
@@ -545,6 +550,7 @@ gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7/go.mod h1:dt/ZhP58zS4L8KSrWD
 gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.2.4/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.3.0/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
+gopkg.in/yaml.v2 v2.4.0 h1:D8xgwECY7CYvx+Y2n4sBz93Jn9JRvxdiyyo8CTfuKaY=
 gopkg.in/yaml.v2 v2.4.0/go.mod h1:RDklbk79AGWmwhnvt/jBztapEOGDOx6ZbXqjP6csGnQ=
 gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=

internal/ai/service/mcp_http_server.go

@@ -163,7 +163,8 @@ func (s *Service) stopMCPHTTPServer(ctx context.Context, message string) (ai.MCP
 }
 
 // Shutdown 释放 AI Service 中的运行时资源。
-func (s *Service) Shutdown(ctx context.Context) {
+func (s *Service) Shutdown() {
+	ctx := context.Background()
 	_, _ = s.stopMCPHTTPServer(ctx, "应用关闭，GoNavi MCP HTTP 服务已停止")
 }
 

internal/ai/service/mcp_http_server_test.go

@@ -57,7 +57,7 @@ func TestMCPHTTPServerLifecycleFromAIService(t *testing.T) {
 	service := NewServiceWithSecretStore(secretstore.NewUnavailableStore("test"))
 	InitializeLifecycle(service, context.Background())
 	t.Cleanup(func() {
-		service.Shutdown(context.Background())
+		service.Shutdown()
 	})
 
 	initial := service.AIGetMCPHTTPServerStatus()
@@ -123,7 +123,7 @@ func TestMCPHTTPServerStartUsesCustomAddrAndToken(t *testing.T) {
 	service := NewServiceWithSecretStore(secretstore.NewUnavailableStore("test"))
 	InitializeLifecycle(service, context.Background())
 	t.Cleanup(func() {
-		service.Shutdown(context.Background())
+		service.Shutdown()
 	})
 
 	started, err := service.AIStartMCPHTTPServer(ai.MCPHTTPServerOptions{

internal/app/app.go

@@ -178,8 +178,8 @@ func (a *App) LogWindowDiagnostic(stage string, payload string) {
 	logger.Warnf("窗口诊断：stage=%s payload=%s", stage, payload)
 }
 
-// Shutdown is called when the app terminates
-func (a *App) Shutdown(ctx context.Context) {
+// Shutdown is called when the app terminates.
+func (a *App) Shutdown() {
 	logger.Infof("应用开始关闭，准备释放资源")
 	a.rollbackPendingSQLTransactionsOnShutdown()
 	a.mu.Lock()

internal/db/mysql_impl.go

@@ -594,6 +594,18 @@ var mysqlDatabaseQueries = []string{
 	"SELECT DATABASE() AS `Database`",
 }
 
+var mysqlDatabaseNameKeys = []string{
+	"Database",
+	"database",
+	"DATABASE",
+	"database_name",
+	"DATABASE_NAME",
+	"schema",
+	"SCHEMA",
+	"schema_name",
+	"SCHEMA_NAME",
+}
+
 func collectMySQLDatabaseNames(queryFn func(string) ([]map[string]interface{}, []string, error)) ([]string, error) {
 	if queryFn == nil {
 		return nil, fmt.Errorf("查询函数为空")
@@ -603,34 +615,59 @@ func collectMySQLDatabaseNames(queryFn func(string) ([]map[string]interface{}, [
 	seen := make(map[string]struct{}, 8)
 	var lastErr error
 
-	appendNames := func(rows []map[string]interface{}) {
-		for _, row := range rows {
-			for _, key := range []string{"Database", "database"} {
-				val, ok := row[key]
-				if !ok || val == nil {
-					continue
-				}
-				name := strings.TrimSpace(fmt.Sprintf("%v", val))
-				if name == "" || strings.EqualFold(name, "<nil>") {
-					continue
-				}
-				if _, exists := seen[name]; exists {
-					continue
-				}
-				seen[name] = struct{}{}
-				names = append(names, name)
-				break
+	normalizeName := func(val interface{}) string {
+		if val == nil {
+			return ""
+		}
+		name := strings.TrimSpace(fmt.Sprintf("%v", val))
+		if name == "" || strings.EqualFold(name, "<nil>") || strings.EqualFold(name, "null") {
+			return ""
+		}
+		return name
+	}
+
+	extractName := func(row map[string]interface{}, columns []string) string {
+		for _, key := range mysqlDatabaseNameKeys {
+			if name := normalizeName(row[key]); name != "" {
+				return name
 			}
 		}
+		for _, column := range columns {
+			if name := normalizeName(row[column]); name != "" {
+				return name
+			}
+		}
+		if len(row) == 1 {
+			for _, val := range row {
+				if name := normalizeName(val); name != "" {
+					return name
+				}
+			}
+		}
+		return ""
+	}
+
+	appendNames := func(rows []map[string]interface{}, columns []string) {
+		for _, row := range rows {
+			name := extractName(row, columns)
+			if name == "" {
+				continue
+			}
+			if _, exists := seen[name]; exists {
+				continue
+			}
+			seen[name] = struct{}{}
+			names = append(names, name)
+		}
 	}
 
 	for _, sqlText := range mysqlDatabaseQueries {
-		rows, _, err := queryFn(sqlText)
+		rows, columns, err := queryFn(sqlText)
 		if err != nil {
 			lastErr = err
 			continue
 		}
-		appendNames(rows)
+		appendNames(rows, columns)
 		if len(names) > 0 {
 			return names, nil
 		}

internal/db/mysql_metadata_test.go

@@ -15,8 +15,8 @@ func TestCollectMySQLDatabaseNames_FallsBackToCurrentDatabase(t *testing.T) {
 			return nil, nil, errors.New("Error 1227 (42000): Access denied; you need (at least one of) the SHOW DATABASES privilege(s) for this operation")
 		case mysqlDatabaseQueries[1]:
 			return []map[string]interface{}{
-				{"Database": "biz_app"},
-			}, nil, nil
+				{"database_name": "biz_app"},
+			}, []string{"database_name"}, nil
 		default:
 			return nil, nil, errors.New("unexpected query")
 		}
@@ -31,6 +31,33 @@ func TestCollectMySQLDatabaseNames_FallsBackToCurrentDatabase(t *testing.T) {
 	}
 }
 
+func TestCollectMySQLDatabaseNames_AcceptsMyCATStyleSchemaColumn(t *testing.T) {
+	t.Parallel()
+
+	got, err := collectMySQLDatabaseNames(func(query string) ([]map[string]interface{}, []string, error) {
+		switch query {
+		case mysqlDatabaseQueries[0]:
+			return []map[string]interface{}{
+				{"SCHEMA": "analytics"},
+			}, []string{"SCHEMA"}, nil
+		case mysqlDatabaseQueries[1]:
+			return []map[string]interface{}{
+				{"Database": "should_not_be_used"},
+			}, []string{"Database"}, nil
+		default:
+			return nil, nil, errors.New("unexpected query")
+		}
+	})
+	if err != nil {
+		t.Fatalf("collectMySQLDatabaseNames 返回错误: %v", err)
+	}
+
+	want := []string{"analytics"}
+	if !reflect.DeepEqual(got, want) {
+		t.Fatalf("unexpected database names, got=%v want=%v", got, want)
+	}
+}
+
 func TestCollectMySQLDatabaseNames_PrefersShowDatabasesWhenAvailable(t *testing.T) {
 	t.Parallel()
 

internal/mcpserver/backend.go

@@ -47,10 +47,7 @@ func (b *AppBackend) Close(ctx context.Context) error {
 	if b == nil || b.app == nil {
 		return nil
 	}
-	if ctx == nil {
-		ctx = context.Background()
-	}
-	b.app.Shutdown(ctx)
+	b.app.Shutdown()
 	return nil
 }
 

main.go

@@ -51,8 +51,8 @@ func main() {
 			aiservice.InitializeLifecycle(aiService, ctx)
 		},
 		OnShutdown: func(ctx context.Context) {
-			aiService.Shutdown(ctx)
-			application.Shutdown(ctx)
+			aiService.Shutdown()
+			application.Shutdown()
 		},
 		Bind: []interface{}{
 			application,