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69 lines
1.9 KiB
Go
69 lines
1.9 KiB
Go
// Copyright (C) 2019-2020 Zilliz. All rights reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance
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// with the License. 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 distributed under the License
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// is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
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// or implied. See the License for the specific language governing permissions and limitations under the License.
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package retry
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import "time"
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type config struct {
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attempts uint
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sleep time.Duration
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maxSleepTime time.Duration
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isRetryErr func(err error) bool
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}
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func newDefaultConfig() *config {
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return &config{
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attempts: uint(10),
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sleep: 200 * time.Millisecond,
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maxSleepTime: 3 * time.Second,
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}
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}
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// Option is used to config the retry function.
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type Option func(*config)
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// Attempts is used to config the max retry times.
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func Attempts(attempts uint) Option {
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return func(c *config) {
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c.attempts = attempts
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}
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}
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// Sleep is used to config the initial interval time of each execution.
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func Sleep(sleep time.Duration) Option {
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return func(c *config) {
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c.sleep = sleep
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// ensure max retry interval is always larger than retry interval
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if c.sleep*2 > c.maxSleepTime {
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c.maxSleepTime = 2 * c.sleep
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}
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}
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}
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// MaxSleepTime is used to config the max interval time of each execution.
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func MaxSleepTime(maxSleepTime time.Duration) Option {
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return func(c *config) {
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// ensure max retry interval is always larger than retry interval
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if c.sleep*2 > maxSleepTime {
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c.maxSleepTime = 2 * c.sleep
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} else {
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c.maxSleepTime = maxSleepTime
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}
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}
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}
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func RetryErr(isRetryErr func(err error) bool) Option {
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return func(c *config) {
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c.isRetryErr = isRetryErr
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}
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}
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