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61 lines
1.9 KiB
Go
61 lines
1.9 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 garbagecollector
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import (
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"fmt"
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"strings"
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"sync"
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"k8s.io/apimachinery/pkg/runtime/schema"
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"k8s.io/client-go/dynamic"
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"k8s.io/kubernetes/pkg/util/metrics"
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)
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// RegisteredRateLimiter records the registered RateLimters to avoid
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// duplication.
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type RegisteredRateLimiter struct {
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rateLimiters map[schema.GroupVersion]*sync.Once
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}
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// NewRegisteredRateLimiter returns a new RegisteredRateLimiater.
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// TODO: NewRegisteredRateLimiter is not dynamic. We need to find a better way
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// when GC dynamically change the resources it monitors.
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func NewRegisteredRateLimiter(resources map[schema.GroupVersionResource]struct{}) *RegisteredRateLimiter {
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rateLimiters := make(map[schema.GroupVersion]*sync.Once)
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for resource := range resources {
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gv := resource.GroupVersion()
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if _, found := rateLimiters[gv]; !found {
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rateLimiters[gv] = &sync.Once{}
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}
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}
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return &RegisteredRateLimiter{rateLimiters: rateLimiters}
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}
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func (r *RegisteredRateLimiter) registerIfNotPresent(gv schema.GroupVersion, client *dynamic.Client, prefix string) {
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once, found := r.rateLimiters[gv]
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if !found {
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return
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}
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once.Do(func() {
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if rateLimiter := client.GetRateLimiter(); rateLimiter != nil {
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group := strings.Replace(gv.Group, ".", ":", -1)
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metrics.RegisterMetricAndTrackRateLimiterUsage(fmt.Sprintf("%s_%s_%s", prefix, group, gv.Version), rateLimiter)
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}
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})
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}
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