69 lines
1.6 KiB
Go
69 lines
1.6 KiB
Go
// Copyright 2015 PingCAP, Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package kv
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import (
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"github.com/juju/errors"
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"github.com/ngaut/log"
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"github.com/pingcap/tidb/util/errors2"
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)
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// isRetryableError checks if the err is a fatal error and the under going operation is worth to retry.
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func isRetryableError(err error) bool {
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if err == nil {
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return false
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}
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if errors2.ErrorEqual(err, ErrLockConflict) || errors2.ErrorEqual(err, ErrConditionNotMatch) {
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return true
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}
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return false
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}
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// RunInNewTxn will run the f in a new transaction environment.
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func RunInNewTxn(store Storage, retryable bool, f func(txn Transaction) error) error {
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for {
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txn, err := store.Begin()
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if err != nil {
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log.Errorf("RunInNewTxn error - %v", err)
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return errors.Trace(err)
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}
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err = f(txn)
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if retryable && isRetryableError(err) {
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log.Warnf("Retry txn %v", txn)
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txn.Rollback()
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continue
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}
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if err != nil {
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return errors.Trace(err)
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}
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err = txn.Commit()
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if retryable && isRetryableError(err) {
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log.Warnf("Retry txn %v", txn)
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txn.Rollback()
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continue
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}
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if err != nil {
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return errors.Trace(err)
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}
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break
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}
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return nil
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}
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