68 lines
2 KiB
Go
68 lines
2 KiB
Go
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/*
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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 config implements the pod configuration readers.
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package config
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import (
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"sync"
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"k8s.io/apimachinery/pkg/util/sets"
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)
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// SourcesReadyFn is function that returns true if the specified sources have been seen.
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type SourcesReadyFn func(sourcesSeen sets.String) bool
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// SourcesReady tracks the set of configured sources seen by the kubelet.
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type SourcesReady interface {
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// AddSource adds the specified source to the set of sources managed.
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AddSource(source string)
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// AllReady returns true if the currently configured sources have all been seen.
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AllReady() bool
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}
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// NewSourcesReady returns a SourcesReady with the specified function.
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func NewSourcesReady(sourcesReadyFn SourcesReadyFn) SourcesReady {
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return &sourcesImpl{
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sourcesSeen: sets.NewString(),
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sourcesReadyFn: sourcesReadyFn,
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}
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}
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// sourcesImpl implements SourcesReady. It is thread-safe.
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type sourcesImpl struct {
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// lock protects access to sources seen.
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lock sync.RWMutex
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// set of sources seen.
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sourcesSeen sets.String
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// sourcesReady is a function that evaluates if the sources are ready.
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sourcesReadyFn SourcesReadyFn
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}
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// Add adds the specified source to the set of sources managed.
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func (s *sourcesImpl) AddSource(source string) {
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s.lock.Lock()
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defer s.lock.Unlock()
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s.sourcesSeen.Insert(source)
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}
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// AllReady returns true if each configured source is ready.
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func (s *sourcesImpl) AllReady() bool {
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s.lock.RLock()
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defer s.lock.RUnlock()
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return s.sourcesReadyFn(s.sourcesSeen)
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}
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