kubernetes rate_limiters 源码
kubernetes rate_limiters 代码
文件路径：/pkg/controller/podautoscaler/rate_limiters.go
/*
Copyright 2015 The Kubernetes Authors.
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 podautoscaler
import (
"time"
"k8s.io/client-go/util/workqueue"
)
// FixedItemIntervalRateLimiter limits items to a fixed-rate interval
type FixedItemIntervalRateLimiter struct {
interval time.Duration
}
var _ workqueue.RateLimiter = &FixedItemIntervalRateLimiter{}
// NewFixedItemIntervalRateLimiter creates a new instance of a RateLimiter using a fixed interval
func NewFixedItemIntervalRateLimiter(interval time.Duration) workqueue.RateLimiter {
return &FixedItemIntervalRateLimiter{
interval: interval,
}
}
// When returns the interval of the rate limiter
func (r *FixedItemIntervalRateLimiter) When(item interface{}) time.Duration {
return r.interval
}
// NumRequeues returns back how many failures the item has had
func (r *FixedItemIntervalRateLimiter) NumRequeues(item interface{}) int {
return 1
}
// Forget indicates that an item is finished being retried.
func (r *FixedItemIntervalRateLimiter) Forget(item interface{}) {
}
// NewDefaultHPARateLimiter creates a rate limiter which limits overall (as per the
// default controller rate limiter), as well as per the resync interval
func NewDefaultHPARateLimiter(interval time.Duration) workqueue.RateLimiter {
return NewFixedItemIntervalRateLimiter(interval)
}
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