forked from pingcap/tidb
-
Notifications
You must be signed in to change notification settings - Fork 0
/
misc.go
45 lines (40 loc) · 1.37 KB
/
misc.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
// Copyright 2016 PingCAP, Inc.
//
// 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,
// See the License for the specific language governing permissions and
// limitations under the License.
package util
import (
"time"
"github.com/juju/errors"
)
const (
// DefaultMaxRetries indicates the max retry count.
DefaultMaxRetries = 30
// RetryInterval indicates retry interval.
RetryInterval uint64 = 500
)
// RunWithRetry will run the f with backoff and retry.
// retryCnt: Max retry count
// backoff: When run f failed, it will sleep backoff * triedCount time.Millisecond.
// Function f should have two return value. The first one is an bool which indicate if the err if retryable.
// The second is if the f meet any error.
func RunWithRetry(retryCnt int, backoff uint64, f func() (bool, error)) (err error) {
for i := 1; i <= retryCnt; i++ {
var retryAble bool
retryAble, err = f()
if err == nil || !retryAble {
return errors.Trace(err)
}
sleepTime := time.Duration(backoff*uint64(i)) * time.Millisecond
time.Sleep(sleepTime)
}
return errors.Trace(err)
}