blob: 03b98f4fba73580902650ec116f7cb1739a9fc66 (
plain)
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
46
|
// Copyright 2014 Google Inc. All Rights Reserved.
//
// 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 storage
import (
gax "github.com/googleapis/gax-go"
"golang.org/x/net/context"
"google.golang.org/api/googleapi"
)
// runWithRetry calls the function until it returns nil or a non-retryable error, or
// the context is done.
func runWithRetry(ctx context.Context, call func() error) error {
var backoff gax.Backoff // use defaults for gax exponential backoff
for {
err := call()
if err == nil {
return nil
}
e, ok := err.(*googleapi.Error)
if !ok {
return err
}
// Retry on 429 and 5xx, according to
// https://cloud.google.com/storage/docs/exponential-backoff.
if e.Code == 429 || (e.Code >= 500 && e.Code < 600) {
if err := gax.Sleep(ctx, backoff.Pause()); err != nil {
return err
}
continue
}
return err
}
}
|