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70 lines
2.3 KiB
Go
70 lines
2.3 KiB
Go
/*
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Copyright 2016 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package workqueue
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// RateLimitingInterface is an interface that rate limits items being added to the queue.
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type RateLimitingInterface interface {
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DelayingInterface
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// AddRateLimited adds an item to the workqueue after the rate limiter says its ok
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AddRateLimited(item interface{})
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// Forget indicates that an item is finished being retried. Doesn't matter whether its for perm failing
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// or for success, we'll stop the rate limiter from tracking it. This only clears the `rateLimiter`, you
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// still have to call `Done` on the queue.
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Forget(item interface{})
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// NumRequeues returns back how many times the item was requeued
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NumRequeues(item interface{}) int
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}
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// NewRateLimitingQueue constructs a new workqueue with rateLimited queuing ability
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// Remember to call Forget! If you don't, you may end up tracking failures forever.
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func NewRateLimitingQueue(rateLimiter RateLimiter) RateLimitingInterface {
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return &rateLimitingType{
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DelayingInterface: NewDelayingQueue(),
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rateLimiter: rateLimiter,
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}
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}
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func NewNamedRateLimitingQueue(rateLimiter RateLimiter, name string) RateLimitingInterface {
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return &rateLimitingType{
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DelayingInterface: NewNamedDelayingQueue(name),
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rateLimiter: rateLimiter,
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}
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}
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// rateLimitingType wraps an Interface and provides rateLimited re-enquing
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type rateLimitingType struct {
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DelayingInterface
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rateLimiter RateLimiter
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}
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// AddRateLimited AddAfter's the item based on the time when the rate limiter says its ok
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func (q *rateLimitingType) AddRateLimited(item interface{}) {
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q.DelayingInterface.AddAfter(item, q.rateLimiter.When(item))
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}
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func (q *rateLimitingType) NumRequeues(item interface{}) int {
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return q.rateLimiter.NumRequeues(item)
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}
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func (q *rateLimitingType) Forget(item interface{}) {
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q.rateLimiter.Forget(item)
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}
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