Refactor db package (go-gitea#35380)

Remove unnecessary code

Author: wxiaoguang

models/auth/session.go

@@ -86,7 +86,7 @@ func RegenerateSession(ctx context.Context, oldKey, newKey string) (*Session, er
 			}
 		}
 
-		if _, err := db.Exec(ctx, "UPDATE "+db.TableName(&Session{})+" SET `key` = ? WHERE `key`=?", newKey, oldKey); err != nil {
+		if _, err := db.Exec(ctx, "UPDATE `session` SET `key` = ? WHERE `key`=?", newKey, oldKey); err != nil {
 			return nil, err
 		}
 

models/auth/source_test.go

@@ -8,7 +8,6 @@ import (
 	"testing"
 
 	auth_model "code.gitea.io/gitea/models/auth"
-	"code.gitea.io/gitea/models/db"
 	"code.gitea.io/gitea/models/unittest"
 	"code.gitea.io/gitea/modules/json"
 
@@ -40,7 +39,7 @@ func (source *TestSource) ToDB() ([]byte, error) {
 func TestDumpAuthSource(t *testing.T) {
 	assert.NoError(t, unittest.PrepareTestDatabase())
 
-	authSourceSchema, err := db.TableInfo(new(auth_model.Source))
+	authSourceSchema, err := unittest.GetXORMEngine().TableInfo(new(auth_model.Source))
 	assert.NoError(t, err)
 
 	auth_model.RegisterTypeConfig(auth_model.OAuth2, new(TestSource))

models/db/context.go

@@ -61,17 +61,19 @@ func contextSafetyCheck(e Engine) {
 	callerNum := runtime.Callers(3, callers) // skip 3: runtime.Callers, contextSafetyCheck, GetEngine
 	for i := range callerNum {
 		if slices.Contains(contextSafetyDeniedFuncPCs, callers[i]) {
-			panic(errors.New("using database context in an iterator would cause corrupted results"))
+			panic(errors.New("using session context in an iterator would cause corrupted results"))
 		}
 	}
 }
 
 // GetEngine gets an existing db Engine/Statement or creates a new Session
-func GetEngine(ctx context.Context) (e Engine) {
-	defer func() { contextSafetyCheck(e) }()
+func GetEngine(ctx context.Context) Engine {
 	if engine, ok := ctx.Value(engineContextKey).(Engine); ok {
+		// if reusing the existing session, need to do "contextSafetyCheck" because the Iterate creates a "autoResetStatement=false" session
+		contextSafetyCheck(engine)
 		return engine
 	}
+	// no need to do "contextSafetyCheck" because it's a new Session
 	return xormEngine.Context(ctx)
 }
 
@@ -301,11 +303,6 @@ func CountByBean(ctx context.Context, bean any) (int64, error) {
 	return GetEngine(ctx).Count(bean)
 }
 
-// TableName returns the table name according a bean object
-func TableName(bean any) string {
-	return xormEngine.TableName(bean)
-}
-
 // InTransaction returns true if the engine is in a transaction otherwise return false
 func InTransaction(ctx context.Context) bool {
 	return getTransactionSession(ctx) != nil

models/db/context_test.go

@@ -100,31 +100,36 @@ func TestContextSafety(t *testing.T) {
 		assert.NoError(t, db.Insert(t.Context(), &TestModel2{ID: int64(-i)}))
 	}
 
-	actualCount := 0
-	// here: db.GetEngine(t.Context()) is a new *Session created from *Engine
-	_ = db.WithTx(t.Context(), func(ctx context.Context) error {
-		_ = db.GetEngine(ctx).Iterate(&TestModel1{}, func(i int, bean any) error {
-			// here: db.GetEngine(ctx) is always the unclosed "Iterate" *Session with autoResetStatement=false,
-			// and the internal states (including "cond" and others) are always there and not be reset in this callback.
-			m1 := bean.(*TestModel1)
-			assert.EqualValues(t, i+1, m1.ID)
-
-			// here: XORM bug, it fails because the SQL becomes "WHERE id=-1", "WHERE id=-1 AND id=-2", "WHERE id=-1 AND id=-2 AND id=-3" ...
-			// and it conflicts with the "Iterate"'s internal states.
-			// has, err := db.GetEngine(ctx).Get(&TestModel2{ID: -m1.ID})
-
-			actualCount++
+	t.Run("Show-XORM-Bug", func(t *testing.T) {
+		actualCount := 0
+		// here: db.GetEngine(t.Context()) is a new *Session created from *Engine
+		_ = db.WithTx(t.Context(), func(ctx context.Context) error {
+			_ = db.GetEngine(ctx).Iterate(&TestModel1{}, func(i int, bean any) error {
+				// here: db.GetEngine(ctx) is always the unclosed "Iterate" *Session with autoResetStatement=false,
+				// and the internal states (including "cond" and others) are always there and not be reset in this callback.
+				m1 := bean.(*TestModel1)
+				assert.EqualValues(t, i+1, m1.ID)
+
+				// here: XORM bug, it fails because the SQL becomes "WHERE id=-1", "WHERE id=-1 AND id=-2", "WHERE id=-1 AND id=-2 AND id=-3" ...
+				// and it conflicts with the "Iterate"'s internal states.
+				// has, err := db.GetEngine(ctx).Get(&TestModel2{ID: -m1.ID})
+
+				actualCount++
+				return nil
+			})
 			return nil
 		})
-		return nil
+		assert.Equal(t, testCount, actualCount)
 	})
-	assert.Equal(t, testCount, actualCount)
 
-	// deny the bad usages
-	assert.PanicsWithError(t, "using database context in an iterator would cause corrupted results", func() {
-		_ = unittest.GetXORMEngine().Iterate(&TestModel1{}, func(i int, bean any) error {
-			_ = db.GetEngine(t.Context())
-			return nil
+	t.Run("DenyBadUsage", func(t *testing.T) {
+		assert.PanicsWithError(t, "using session context in an iterator would cause corrupted results", func() {
+			_ = db.WithTx(t.Context(), func(ctx context.Context) error {
+				return db.GetEngine(ctx).Iterate(&TestModel1{}, func(i int, bean any) error {
+					_ = db.GetEngine(ctx)
+					return nil
+				})
+			})
 		})
 	})
 }

models/db/engine.go

@@ -12,7 +12,6 @@ import (
 	"strings"
 
 	"xorm.io/xorm"
-	"xorm.io/xorm/schemas"
 
 	_ "github.com/go-sql-driver/mysql"  // Needed for the MySQL driver
 	_ "github.com/lib/pq"               // Needed for the Postgresql driver
@@ -67,11 +66,6 @@ var (
 	_ Engine = (*xorm.Session)(nil)
 )
 
-// TableInfo returns table's information via an object
-func TableInfo(v any) (*schemas.Table, error) {
-	return xormEngine.TableInfo(v)
-}
-
 // RegisterModel registers model, if initFuncs provided, it will be invoked after data model sync
 func RegisterModel(bean any, initFunc ...func() error) {
 	registeredModels = append(registeredModels, bean)

models/db/engine_test.go

@@ -70,7 +70,7 @@ func TestPrimaryKeys(t *testing.T) {
 	}
 
 	for _, bean := range beans {
-		table, err := db.TableInfo(bean)
+		table, err := db.GetXORMEngineForTesting().TableInfo(bean)
 		if err != nil {
 			t.Fatal(err)
 		}

models/db/index.go

@@ -19,12 +19,7 @@ type ResourceIndex struct {
 	MaxIndex int64 `xorm:"index"`
 }
 
-var (
-	// ErrResouceOutdated represents an error when request resource outdated
-	ErrResouceOutdated = errors.New("resource outdated")
-	// ErrGetResourceIndexFailed represents an error when resource index retries 3 times
-	ErrGetResourceIndexFailed = errors.New("get resource index failed")
-)
+var ErrGetResourceIndexFailed = errors.New("get resource index failed")
 
 // SyncMaxResourceIndex sync the max index with the resource
 func SyncMaxResourceIndex(ctx context.Context, tableName string, groupID, maxIndex int64) (err error) {

models/organization/org_list.go

@@ -105,11 +105,6 @@ type MinimalOrg = Organization
 
 // GetUserOrgsList returns all organizations the given user has access to
 func GetUserOrgsList(ctx context.Context, user *user_model.User) ([]*MinimalOrg, error) {
-	schema, err := db.TableInfo(new(user_model.User))
-	if err != nil {
-		return nil, err
-	}
-
 	outputCols := []string{
 		"id",
 		"name",
@@ -122,7 +117,7 @@ func GetUserOrgsList(ctx context.Context, user *user_model.User) ([]*MinimalOrg,
 
 	selectColumns := &strings.Builder{}
 	for i, col := range outputCols {
-		fmt.Fprintf(selectColumns, "`%s`.%s", schema.Name, col)
+		_, _ = fmt.Fprintf(selectColumns, "`user`.%s", col)
 		if i < len(outputCols)-1 {
 			selectColumns.WriteString(", ")
 		}

models/unittest/consistency.go

@@ -45,7 +45,7 @@ func CheckConsistencyFor(t TestingT, beansToCheck ...any) {
 }
 
 func checkForConsistency(t TestingT, bean any) {
-	tb, err := db.TableInfo(bean)
+	tb, err := GetXORMEngine().TableInfo(bean)
 	assert.NoError(t, err)
 	f := consistencyCheckMap[tb.Name]
 	require.NotNil(t, f, "unknown bean type: %#v", bean)

models/unittest/fixtures_loader.go

@@ -218,7 +218,7 @@ func NewFixturesLoader(x *xorm.Engine, opts FixturesOptions) (FixturesLoader, er
 	xormBeans, _ := db.NamesToBean()
 	f.xormTableNames = map[string]bool{}
 	for _, bean := range xormBeans {
-		f.xormTableNames[db.TableName(bean)] = true
+		f.xormTableNames[x.TableName(bean)] = true
 	}
 
 	return f, nil