Refactor db package and remove unnecessary DumpTables (#32930)

models/auth/source_test.go

@@ -13,6 +13,8 @@ import (
 	"code.gitea.io/gitea/modules/json"
 
 	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+	"xorm.io/xorm"
 	"xorm.io/xorm/schemas"
 )
 
@@ -54,7 +56,8 @@ func TestDumpAuthSource(t *testing.T) {
 
 	sb := new(strings.Builder)
 
-	db.DumpTables([]*schemas.Table{authSourceSchema}, sb)
-
+	// TODO: this test is quite hacky, it should use a low-level "select" (without model processors) but not a database dump
+	engine := db.GetEngine(db.DefaultContext).(*xorm.Engine)
+	require.NoError(t, engine.DumpTables([]*schemas.Table{authSourceSchema}, sb))
 	assert.Contains(t, sb.String(), `"Provider":"ConvertibleSourceName"`)
 }

models/db/collation.go

@@ -140,7 +140,7 @@ func CheckCollations(x *xorm.Engine) (*CheckCollationsResult, error) {
 }
 
 func CheckCollationsDefaultEngine() (*CheckCollationsResult, error) {
-	return CheckCollations(x)
+	return CheckCollations(xormEngine)
 }
 
 func alterDatabaseCollation(x *xorm.Engine, collation string) error {

models/db/context.go

@@ -94,7 +94,7 @@ func GetEngine(ctx context.Context) Engine {
 	if e := getExistingEngine(ctx); e != nil {
 		return e
 	}
-	return x.Context(ctx)
+	return xormEngine.Context(ctx)
 }
 
 // getExistingEngine gets an existing db Engine/Statement from this context or returns nil
@@ -155,7 +155,7 @@ func TxContext(parentCtx context.Context) (*Context, Committer, error) {
 		return newContext(parentCtx, sess), &halfCommitter{committer: sess}, nil
 	}
 
-	sess := x.NewSession()
+	sess := xormEngine.NewSession()
 	if err := sess.Begin(); err != nil {
 		_ = sess.Close()
 		return nil, nil, err
@@ -179,7 +179,7 @@ func WithTx(parentCtx context.Context, f func(ctx context.Context) error) error
 }
 
 func txWithNoCheck(parentCtx context.Context, f func(ctx context.Context) error) error {
-	sess := x.NewSession()
+	sess := xormEngine.NewSession()
 	defer sess.Close()
 	if err := sess.Begin(); err != nil {
 		return err
@@ -322,7 +322,7 @@ func CountByBean(ctx context.Context, bean any) (int64, error) {
 
 // TableName returns the table name according a bean object
 func TableName(bean any) string {
-	return x.TableName(bean)
+	return xormEngine.TableName(bean)
 }
 
 // InTransaction returns true if the engine is in a transaction otherwise return false

models/db/convert.go

@@ -16,30 +16,30 @@ import (
 
 // ConvertDatabaseTable converts database and tables from utf8 to utf8mb4 if it's mysql and set ROW_FORMAT=dynamic
 func ConvertDatabaseTable() error {
-	if x.Dialect().URI().DBType != schemas.MYSQL {
+	if xormEngine.Dialect().URI().DBType != schemas.MYSQL {
 		return nil
 	}
 
-	r, err := CheckCollations(x)
+	r, err := CheckCollations(xormEngine)
 	if err != nil {
 		return err
 	}
 
-	_, err = x.Exec(fmt.Sprintf("ALTER DATABASE `%s` CHARACTER SET utf8mb4 COLLATE %s", setting.Database.Name, r.ExpectedCollation))
+	_, err = xormEngine.Exec(fmt.Sprintf("ALTER DATABASE `%s` CHARACTER SET utf8mb4 COLLATE %s", setting.Database.Name, r.ExpectedCollation))
 	if err != nil {
 		return err
 	}
 
-	tables, err := x.DBMetas()
+	tables, err := xormEngine.DBMetas()
 	if err != nil {
 		return err
 	}
 	for _, table := range tables {
-		if _, err := x.Exec(fmt.Sprintf("ALTER TABLE `%s` ROW_FORMAT=dynamic", table.Name)); err != nil {
+		if _, err := xormEngine.Exec(fmt.Sprintf("ALTER TABLE `%s` ROW_FORMAT=dynamic", table.Name)); err != nil {
 			return err
 		}
 
-		if _, err := x.Exec(fmt.Sprintf("ALTER TABLE `%s` CONVERT TO CHARACTER SET utf8mb4 COLLATE %s", table.Name, r.ExpectedCollation)); err != nil {
+		if _, err := xormEngine.Exec(fmt.Sprintf("ALTER TABLE `%s` CONVERT TO CHARACTER SET utf8mb4 COLLATE %s", table.Name, r.ExpectedCollation)); err != nil {
 			return err
 		}
 	}
@@ -49,11 +49,11 @@ func ConvertDatabaseTable() error {
 
 // ConvertVarcharToNVarchar converts database and tables from varchar to nvarchar if it's mssql
 func ConvertVarcharToNVarchar() error {
-	if x.Dialect().URI().DBType != schemas.MSSQL {
+	if xormEngine.Dialect().URI().DBType != schemas.MSSQL {
 		return nil
 	}
 
-	sess := x.NewSession()
+	sess := xormEngine.NewSession()
 	defer sess.Close()
 	res, err := sess.QuerySliceString(`SELECT 'ALTER TABLE ' + OBJECT_NAME(SC.object_id) + ' MODIFY SC.name NVARCHAR(' + CONVERT(VARCHAR(5),SC.max_length) + ')'
 FROM SYS.columns SC