-
Notifications
You must be signed in to change notification settings - Fork 492
/
rate_limiter.go
31 lines (27 loc) · 1.15 KB
/
rate_limiter.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
// Copyright 2021 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 controller
import (
"time"
"golang.org/x/time/rate"
wq "k8s.io/client-go/util/workqueue"
)
// NewControllerRateLimiter returns a RateLimiter, which limit the request rate by the stricter one's desicion of two
// RateLimiters: ItemExponentialFailureRateLimiter and BucketRateLimiter
func NewControllerRateLimiter(baseDelay, maxDelay time.Duration) wq.RateLimiter {
return wq.NewMaxOfRateLimiter(
wq.NewItemExponentialFailureRateLimiter(baseDelay, maxDelay),
// 10 qps, 100 bucket size. This is only for retry speed and its only the overall factor (not per item)
&wq.BucketRateLimiter{Limiter: rate.NewLimiter(rate.Limit(10), 100)},
)
}