github.com/polarismesh/polaris@v1.17.8/store/boltdb/bolt_common.go (about)

     1  /**
     2   * Tencent is pleased to support the open source community by making Polaris available.
     3   *
     4   * Copyright (C) 2019 THL A29 Limited, a Tencent company. All rights reserved.
     5   *
     6   * Licensed under the BSD 3-Clause License (the "License");
     7   * you may not use this file except in compliance with the License.
     8   * You may obtain a copy of the License at
     9   *
    10   * https://opensource.org/licenses/BSD-3-Clause
    11   *
    12   * Unless required by applicable law or agreed to in writing, software distributed
    13   * under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
    14   * CONDITIONS OF ANY KIND, either express or implied. See the License for the
    15   * specific language governing permissions and limitations under the License.
    16   */
    17  
    18  package boltdb
    19  
    20  import (
    21  	bolt "go.etcd.io/bbolt"
    22  	"go.uber.org/zap"
    23  
    24  	"github.com/polarismesh/polaris/store"
    25  )
    26  
    27  type transactionFunc func(tx *bolt.Tx) ([]interface{}, error)
    28  
    29  func DoTransactionIfNeed(sTx store.Tx, handler BoltHandler, handle transactionFunc) ([]interface{}, error) {
    30  	var (
    31  		err          error
    32  		autoManageTx bool
    33  	)
    34  	autoManageTx = (sTx == nil)
    35  	if sTx == nil {
    36  		sTx, err = handler.StartTx()
    37  		if err != nil {
    38  			return nil, err
    39  		}
    40  	}
    41  	tx := sTx.GetDelegateTx().(*bolt.Tx)
    42  	defer func() {
    43  		if autoManageTx {
    44  			_ = tx.Rollback()
    45  		}
    46  	}()
    47  
    48  	ret, err := handle(tx)
    49  
    50  	if autoManageTx && err == nil {
    51  		if err := tx.Commit(); err != nil {
    52  			log.Error("do tx commit", zap.Error(err))
    53  			return nil, err
    54  		}
    55  	}
    56  
    57  	return ret, err
    58  }