mirror of https://github.com/k3s-io/k3s
82 lines
2.2 KiB
Go
82 lines
2.2 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 generic
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import (
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"sync"
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"k8s.io/apimachinery/pkg/runtime/schema"
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quota "k8s.io/kubernetes/pkg/quota/v1"
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)
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// implements a basic registry
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type simpleRegistry struct {
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lock sync.RWMutex
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// evaluators tracked by the registry
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evaluators map[schema.GroupResource]quota.Evaluator
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}
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// NewRegistry creates a simple registry with initial list of evaluators
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func NewRegistry(evaluators []quota.Evaluator) quota.Registry {
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return &simpleRegistry{
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evaluators: evaluatorsByGroupResource(evaluators),
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}
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}
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func (r *simpleRegistry) Add(e quota.Evaluator) {
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r.lock.Lock()
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defer r.lock.Unlock()
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r.evaluators[e.GroupResource()] = e
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}
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func (r *simpleRegistry) Remove(e quota.Evaluator) {
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r.lock.Lock()
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defer r.lock.Unlock()
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delete(r.evaluators, e.GroupResource())
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}
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func (r *simpleRegistry) Get(gr schema.GroupResource) quota.Evaluator {
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r.lock.RLock()
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defer r.lock.RUnlock()
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return r.evaluators[gr]
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}
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func (r *simpleRegistry) List() []quota.Evaluator {
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r.lock.RLock()
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defer r.lock.RUnlock()
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return evaluatorsList(r.evaluators)
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}
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// evaluatorsByGroupResource converts a list of evaluators to a map by group resource.
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func evaluatorsByGroupResource(items []quota.Evaluator) map[schema.GroupResource]quota.Evaluator {
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result := map[schema.GroupResource]quota.Evaluator{}
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for _, item := range items {
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result[item.GroupResource()] = item
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}
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return result
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}
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// evaluatorsList converts a map of evaluators to list
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func evaluatorsList(input map[schema.GroupResource]quota.Evaluator) []quota.Evaluator {
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var result []quota.Evaluator
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for _, item := range input {
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result = append(result, item)
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}
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return result
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}
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