harbor/src/lib/orm/tx.go

93 lines
2.0 KiB
Go

// Copyright Project Harbor Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package orm
import (
"context"
"encoding/hex"
"fmt"
"github.com/beego/beego/v2/client/orm"
"github.com/google/uuid"
)
type CommittedKey struct{}
// HasCommittedKey checks whether exist committed key in context.
func HasCommittedKey(ctx context.Context) bool {
if value := ctx.Value(CommittedKey{}); value != nil {
return true
}
return false
}
// ormerTx transaction which support savepoint
type ormerTx struct {
orm.Ormer
orm.TxOrmer
savepoint string
}
func (o *ormerTx) savepointMode() bool {
return o.savepoint != ""
}
func (o *ormerTx) createSavepoint() error {
val := uuid.New()
o.savepoint = fmt.Sprintf("p%s", hex.EncodeToString(val[:]))
_, err := o.TxOrmer.Raw(fmt.Sprintf("SAVEPOINT %s", o.savepoint)).Exec()
return err
}
func (o *ormerTx) releaseSavepoint() error {
_, err := o.TxOrmer.Raw(fmt.Sprintf("RELEASE SAVEPOINT %s", o.savepoint)).Exec()
return err
}
func (o *ormerTx) rollbackToSavepoint() error {
_, err := o.TxOrmer.Raw(fmt.Sprintf("ROLLBACK TO SAVEPOINT %s", o.savepoint)).Exec()
return err
}
func (o *ormerTx) Begin() error {
if o.TxOrmer != nil {
return o.createSavepoint()
}
txOrmer, err := o.Ormer.Begin()
if err != nil {
return err
}
o.TxOrmer = txOrmer
return nil
}
func (o *ormerTx) Commit() error {
if o.savepointMode() {
return o.releaseSavepoint()
}
return o.TxOrmer.Commit()
}
func (o *ormerTx) Rollback() error {
if o.savepointMode() {
return o.rollbackToSavepoint()
}
return o.TxOrmer.Rollback()
}