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Refactor db package and remove unnecessary DumpTables (#32930)

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wxiaoguang 2024-12-21 00:11:38 +08:00 committed by GitHub
parent 7580bd98c1
commit 1c9b022c4d
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GPG Key ID: B5690EEEBB952194
10 changed files with 247 additions and 221 deletions
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7
models/auth/source_test.go
View File

@ -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"`)
}

2
models/db/collation.go
View File

@ -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 {

8
models/db/context.go
View File

@ -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

16
models/db/convert.go
View File

@ -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

220
models/db/engine.go
View File

@ -8,17 +8,10 @@ import (
"context"
"database/sql"
"fmt"
"io"
"reflect"
"strings"
"time"
"code.gitea.io/gitea/modules/log"
"code.gitea.io/gitea/modules/setting"
"xorm.io/xorm"
"xorm.io/xorm/contexts"
"xorm.io/xorm/names"
"xorm.io/xorm/schemas"
_ "github.com/go-sql-driver/mysql" // Needed for the MySQL driver
@ -27,9 +20,9 @@ import (
)
var (
x *xorm.Engine
tables []any
initFuncs []func() error
xormEngine *xorm.Engine
registeredModels []any
registeredInitFuncs []func() error
)
// Engine represents a xorm engine or session.
@ -70,167 +63,38 @@ type Engine interface {
// TableInfo returns table's information via an object
func TableInfo(v any) (*schemas.Table, error) {
return x.TableInfo(v)
return xormEngine.TableInfo(v)
}
// DumpTables dump tables information
func DumpTables(tables []*schemas.Table, w io.Writer, tp ...schemas.DBType) error {
return x.DumpTables(tables, w, tp...)
}
// RegisterModel registers model, if initfunc provided, it will be invoked after data model sync
// RegisterModel registers model, if initFuncs provided, it will be invoked after data model sync
func RegisterModel(bean any, initFunc ...func() error) {
tables = append(tables, bean)
if len(initFuncs) > 0 && initFunc[0] != nil {
initFuncs = append(initFuncs, initFunc[0])
registeredModels = append(registeredModels, bean)
if len(registeredInitFuncs) > 0 && initFunc[0] != nil {
registeredInitFuncs = append(registeredInitFuncs, initFunc[0])
}
}
func init() {
gonicNames := []string{"SSL", "UID"}
for _, name := range gonicNames {
names.LintGonicMapper[name] = true
}
}
// newXORMEngine returns a new XORM engine from the configuration
func newXORMEngine() (*xorm.Engine, error) {
connStr, err := setting.DBConnStr()
if err != nil {
return nil, err
}
var engine *xorm.Engine
if setting.Database.Type.IsPostgreSQL() && len(setting.Database.Schema) > 0 {
// OK whilst we sort out our schema issues - create a schema aware postgres
registerPostgresSchemaDriver()
engine, err = xorm.NewEngine("postgresschema", connStr)
} else {
engine, err = xorm.NewEngine(setting.Database.Type.String(), connStr)
}
if err != nil {
return nil, err
}
if setting.Database.Type == "mysql" {
engine.Dialect().SetParams(map[string]string{"rowFormat": "DYNAMIC"})
} else if setting.Database.Type == "mssql" {
engine.Dialect().SetParams(map[string]string{"DEFAULT_VARCHAR": "nvarchar"})
}
engine.SetSchema(setting.Database.Schema)
return engine, nil
}
// SyncAllTables sync the schemas of all tables, is required by unit test code
func SyncAllTables() error {
_, err := x.StoreEngine("InnoDB").SyncWithOptions(xorm.SyncOptions{
_, err := xormEngine.StoreEngine("InnoDB").SyncWithOptions(xorm.SyncOptions{
WarnIfDatabaseColumnMissed: true,
}, tables...)
}, registeredModels...)
return err
}
// InitEngine initializes the xorm.Engine and sets it as db.DefaultContext
func InitEngine(ctx context.Context) error {
xormEngine, err := newXORMEngine()
if err != nil {
if strings.Contains(err.Error(), "SQLite3 support") {
return fmt.Errorf(`sqlite3 requires: -tags sqlite,sqlite_unlock_notify%s%w`, "\n", err)
}
return fmt.Errorf("failed to connect to database: %w", err)
}
xormEngine.SetMapper(names.GonicMapper{})
// WARNING: for serv command, MUST remove the output to os.stdout,
// so use log file to instead print to stdout.
xormEngine.SetLogger(NewXORMLogger(setting.Database.LogSQL))
xormEngine.ShowSQL(setting.Database.LogSQL)
xormEngine.SetMaxOpenConns(setting.Database.MaxOpenConns)
xormEngine.SetMaxIdleConns(setting.Database.MaxIdleConns)
xormEngine.SetConnMaxLifetime(setting.Database.ConnMaxLifetime)
xormEngine.SetDefaultContext(ctx)
if setting.Database.SlowQueryThreshold > 0 {
xormEngine.AddHook(&SlowQueryHook{
Threshold: setting.Database.SlowQueryThreshold,
Logger: log.GetLogger("xorm"),
})
}
SetDefaultEngine(ctx, xormEngine)
return nil
}
// SetDefaultEngine sets the default engine for db
func SetDefaultEngine(ctx context.Context, eng *xorm.Engine) {
x = eng
DefaultContext = &Context{Context: ctx, engine: x}
}
// UnsetDefaultEngine closes and unsets the default engine
// We hope the SetDefaultEngine and UnsetDefaultEngine can be paired, but it's impossible now,
// there are many calls to InitEngine -> SetDefaultEngine directly to overwrite the `x` and DefaultContext without close
// Global database engine related functions are all racy and there is no graceful close right now.
func UnsetDefaultEngine() {
if x != nil {
_ = x.Close()
x = nil
}
DefaultContext = nil
}
// InitEngineWithMigration initializes a new xorm.Engine and sets it as the db.DefaultContext
// This function must never call .Sync() if the provided migration function fails.
// When called from the "doctor" command, the migration function is a version check
// that prevents the doctor from fixing anything in the database if the migration level
// is different from the expected value.
func InitEngineWithMigration(ctx context.Context, migrateFunc func(*xorm.Engine) error) (err error) {
if err = InitEngine(ctx); err != nil {
return err
}
if err = x.Ping(); err != nil {
return err
}
preprocessDatabaseCollation(x)
// We have to run migrateFunc here in case the user is re-running installation on a previously created DB.
// If we do not then table schemas will be changed and there will be conflicts when the migrations run properly.
//
// Installation should only be being re-run if users want to recover an old database.
// However, we should think carefully about should we support re-install on an installed instance,
// as there may be other problems due to secret reinitialization.
if err = migrateFunc(x); err != nil {
return fmt.Errorf("migrate: %w", err)
}
if err = SyncAllTables(); err != nil {
return fmt.Errorf("sync database struct error: %w", err)
}
for _, initFunc := range initFuncs {
if err := initFunc(); err != nil {
return fmt.Errorf("initFunc failed: %w", err)
}
}
return nil
}
// NamesToBean return a list of beans or an error
func NamesToBean(names ...string) ([]any, error) {
beans := []any{}
if len(names) == 0 {
beans = append(beans, tables...)
beans = append(beans, registeredModels...)
return beans, nil
}
// Need to map provided names to beans...
beanMap := make(map[string]any)
for _, bean := range tables {
for _, bean := range registeredModels {
beanMap[strings.ToLower(reflect.Indirect(reflect.ValueOf(bean)).Type().Name())] = bean
beanMap[strings.ToLower(x.TableName(bean))] = bean
beanMap[strings.ToLower(x.TableName(bean, true))] = bean
beanMap[strings.ToLower(xormEngine.TableName(bean))] = bean
beanMap[strings.ToLower(xormEngine.TableName(bean, true))] = bean
}
gotBean := make(map[any]bool)
@ -247,36 +111,9 @@ func NamesToBean(names ...string) ([]any, error) {
return beans, nil
}
// DumpDatabase dumps all data from database according the special database SQL syntax to file system.
func DumpDatabase(filePath, dbType string) error {
var tbs []*schemas.Table
for _, t := range tables {
t, err := x.TableInfo(t)
if err != nil {
return err
}
tbs = append(tbs, t)
}
type Version struct {
ID int64 `xorm:"pk autoincr"`
Version int64
}
t, err := x.TableInfo(&Version{})
if err != nil {
return err
}
tbs = append(tbs, t)
if len(dbType) > 0 {
return x.DumpTablesToFile(tbs, filePath, schemas.DBType(dbType))
}
return x.DumpTablesToFile(tbs, filePath)
}
// MaxBatchInsertSize returns the table's max batch insert size
func MaxBatchInsertSize(bean any) int {
t, err := x.TableInfo(bean)
t, err := xormEngine.TableInfo(bean)
if err != nil {
return 50
}
@ -285,18 +122,18 @@ func MaxBatchInsertSize(bean any) int {
// IsTableNotEmpty returns true if table has at least one record
func IsTableNotEmpty(beanOrTableName any) (bool, error) {
return x.Table(beanOrTableName).Exist()
return xormEngine.Table(beanOrTableName).Exist()
}
// DeleteAllRecords will delete all the records of this table
func DeleteAllRecords(tableName string) error {
_, err := x.Exec(fmt.Sprintf("DELETE FROM %s", tableName))
_, err := xormEngine.Exec(fmt.Sprintf("DELETE FROM %s", tableName))
return err
}
// GetMaxID will return max id of the table
func GetMaxID(beanOrTableName any) (maxID int64, err error) {
_, err = x.Select("MAX(id)").Table(beanOrTableName).Get(&maxID)
_, err = xormEngine.Select("MAX(id)").Table(beanOrTableName).Get(&maxID)
return maxID, err
}
@ -308,24 +145,3 @@ func SetLogSQL(ctx context.Context, on bool) {
sess.Engine().ShowSQL(on)
}
}
type SlowQueryHook struct {
Threshold time.Duration
Logger log.Logger
}
var _ contexts.Hook = &SlowQueryHook{}
func (SlowQueryHook) BeforeProcess(c *contexts.ContextHook) (context.Context, error) {
return c.Ctx, nil
}
func (h *SlowQueryHook) AfterProcess(c *contexts.ContextHook) error {
if c.ExecuteTime >= h.Threshold {
// 8 is the amount of skips passed to runtime.Caller, so that in the log the correct function
// is being displayed (the function that ultimately wants to execute the query in the code)
// instead of the function of the slow query hook being called.
h.Logger.Log(8, log.WARN, "[Slow SQL Query] %s %v - %v", c.SQL, c.Args, c.ExecuteTime)
}
return nil
}

33
models/db/engine_dump.go Normal file
View File

@ -0,0 +1,33 @@
// Copyright 2024 The Gitea Authors. All rights reserved.
// SPDX-License-Identifier: MIT
package db
import "xorm.io/xorm/schemas"
// DumpDatabase dumps all data from database according the special database SQL syntax to file system.
func DumpDatabase(filePath, dbType string) error {
var tbs []*schemas.Table
for _, t := range registeredModels {
t, err := xormEngine.TableInfo(t)
if err != nil {
return err
}
tbs = append(tbs, t)
}
type Version struct {
ID int64 `xorm:"pk autoincr"`
Version int64
}
t, err := xormEngine.TableInfo(&Version{})
if err != nil {
return err
}
tbs = append(tbs, t)
if dbType != "" {
return xormEngine.DumpTablesToFile(tbs, filePath, schemas.DBType(dbType))
}
return xormEngine.DumpTablesToFile(tbs, filePath)
}

34
models/db/engine_hook.go Normal file
View File

@ -0,0 +1,34 @@
// Copyright 2024 The Gitea Authors. All rights reserved.
// SPDX-License-Identifier: MIT
package db
import (
"context"
"time"
"code.gitea.io/gitea/modules/log"
"xorm.io/xorm/contexts"
)
type SlowQueryHook struct {
Threshold time.Duration
Logger log.Logger
}
var _ contexts.Hook = (*SlowQueryHook)(nil)
func (*SlowQueryHook) BeforeProcess(c *contexts.ContextHook) (context.Context, error) {
return c.Ctx, nil
}
func (h *SlowQueryHook) AfterProcess(c *contexts.ContextHook) error {
if c.ExecuteTime >= h.Threshold {
// 8 is the amount of skips passed to runtime.Caller, so that in the log the correct function
// is being displayed (the function that ultimately wants to execute the query in the code)
// instead of the function of the slow query hook being called.
h.Logger.Log(8, log.WARN, "[Slow SQL Query] %s %v - %v", c.SQL, c.Args, c.ExecuteTime)
}
return nil
}

140
models/db/engine_init.go Normal file
View File

@ -0,0 +1,140 @@
// Copyright 2024 The Gitea Authors. All rights reserved.
// SPDX-License-Identifier: MIT
package db
import (
"context"
"fmt"
"strings"
"code.gitea.io/gitea/modules/log"
"code.gitea.io/gitea/modules/setting"
"xorm.io/xorm"
"xorm.io/xorm/names"
)
func init() {
gonicNames := []string{"SSL", "UID"}
for _, name := range gonicNames {
names.LintGonicMapper[name] = true
}
}
// newXORMEngine returns a new XORM engine from the configuration
func newXORMEngine() (*xorm.Engine, error) {
connStr, err := setting.DBConnStr()
if err != nil {
return nil, err
}
var engine *xorm.Engine
if setting.Database.Type.IsPostgreSQL() && len(setting.Database.Schema) > 0 {
// OK whilst we sort out our schema issues - create a schema aware postgres
registerPostgresSchemaDriver()
engine, err = xorm.NewEngine("postgresschema", connStr)
} else {
engine, err = xorm.NewEngine(setting.Database.Type.String(), connStr)
}
if err != nil {
return nil, err
}
if setting.Database.Type == "mysql" {
engine.Dialect().SetParams(map[string]string{"rowFormat": "DYNAMIC"})
} else if setting.Database.Type == "mssql" {
engine.Dialect().SetParams(map[string]string{"DEFAULT_VARCHAR": "nvarchar"})
}
engine.SetSchema(setting.Database.Schema)
return engine, nil
}
// InitEngine initializes the xorm.Engine and sets it as db.DefaultContext
func InitEngine(ctx context.Context) error {
xe, err := newXORMEngine()
if err != nil {
if strings.Contains(err.Error(), "SQLite3 support") {
return fmt.Errorf(`sqlite3 requires: -tags sqlite,sqlite_unlock_notify%s%w`, "\n", err)
}
return fmt.Errorf("failed to connect to database: %w", err)
}
xe.SetMapper(names.GonicMapper{})
// WARNING: for serv command, MUST remove the output to os.stdout,
// so use log file to instead print to stdout.
xe.SetLogger(NewXORMLogger(setting.Database.LogSQL))
xe.ShowSQL(setting.Database.LogSQL)
xe.SetMaxOpenConns(setting.Database.MaxOpenConns)
xe.SetMaxIdleConns(setting.Database.MaxIdleConns)
xe.SetConnMaxLifetime(setting.Database.ConnMaxLifetime)
xe.SetDefaultContext(ctx)
if setting.Database.SlowQueryThreshold > 0 {
xe.AddHook(&SlowQueryHook{
Threshold: setting.Database.SlowQueryThreshold,
Logger: log.GetLogger("xorm"),
})
}
SetDefaultEngine(ctx, xe)
return nil
}
// SetDefaultEngine sets the default engine for db
func SetDefaultEngine(ctx context.Context, eng *xorm.Engine) {
xormEngine = eng
DefaultContext = &Context{Context: ctx, engine: xormEngine}
}
// UnsetDefaultEngine closes and unsets the default engine
// We hope the SetDefaultEngine and UnsetDefaultEngine can be paired, but it's impossible now,
// there are many calls to InitEngine -> SetDefaultEngine directly to overwrite the `xormEngine` and DefaultContext without close
// Global database engine related functions are all racy and there is no graceful close right now.
func UnsetDefaultEngine() {
if xormEngine != nil {
_ = xormEngine.Close()
xormEngine = nil
}
DefaultContext = nil
}
// InitEngineWithMigration initializes a new xorm.Engine and sets it as the db.DefaultContext
// This function must never call .Sync() if the provided migration function fails.
// When called from the "doctor" command, the migration function is a version check
// that prevents the doctor from fixing anything in the database if the migration level
// is different from the expected value.
func InitEngineWithMigration(ctx context.Context, migrateFunc func(*xorm.Engine) error) (err error) {
if err = InitEngine(ctx); err != nil {
return err
}
if err = xormEngine.Ping(); err != nil {
return err
}
preprocessDatabaseCollation(xormEngine)
// We have to run migrateFunc here in case the user is re-running installation on a previously created DB.
// If we do not then table schemas will be changed and there will be conflicts when the migrations run properly.
//
// Installation should only be being re-run if users want to recover an old database.
// However, we should think carefully about should we support re-install on an installed instance,
// as there may be other problems due to secret reinitialization.
if err = migrateFunc(xormEngine); err != nil {
return fmt.Errorf("migrate: %w", err)
}
if err = SyncAllTables(); err != nil {
return fmt.Errorf("sync database struct error: %w", err)
}
for _, initFunc := range registeredInitFuncs {
if err := initFunc(); err != nil {
return fmt.Errorf("initFunc failed: %w", err)
}
}
return nil
}

2
models/db/name.go
View File

@ -16,7 +16,7 @@ var (
// ErrNameEmpty name is empty error
ErrNameEmpty = util.SilentWrap{Message: "name is empty", Err: util.ErrInvalidArgument}
// AlphaDashDotPattern characters prohibited in a user name (anything except A-Za-z0-9_.-)
// AlphaDashDotPattern characters prohibited in a username (anything except A-Za-z0-9_.-)
AlphaDashDotPattern = regexp.MustCompile(`[^\w-\.]`)
)

6
models/db/sequence.go
View File

@ -17,11 +17,11 @@ func CountBadSequences(_ context.Context) (int64, error) {
return 0, nil
}
sess := x.NewSession()
sess := xormEngine.NewSession()
defer sess.Close()
var sequences []string
schema := x.Dialect().URI().Schema
schema := xormEngine.Dialect().URI().Schema
sess.Engine().SetSchema("")
if err := sess.Table("information_schema.sequences").Cols("sequence_name").Where("sequence_name LIKE 'tmp_recreate__%_id_seq%' AND sequence_catalog = ?", setting.Database.Name).Find(&sequences); err != nil {
@ -38,7 +38,7 @@ func FixBadSequences(_ context.Context) error {
return nil
}
sess := x.NewSession()
sess := xormEngine.NewSession()
defer sess.Close()
if err := sess.Begin(); err != nil {
return err