67 lines
2 KiB
Go
67 lines
2 KiB
Go
/*
|
|
Copyright 2016 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 config implements the pod configuration readers.
|
|
package config
|
|
|
|
import (
|
|
"sync"
|
|
|
|
"k8s.io/apimachinery/pkg/util/sets"
|
|
)
|
|
|
|
// SourcesReadyFn is function that returns true if the specified sources have been seen.
|
|
type SourcesReadyFn func(sourcesSeen sets.String) bool
|
|
|
|
// SourcesReady tracks the set of configured sources seen by the kubelet.
|
|
type SourcesReady interface {
|
|
// AddSource adds the specified source to the set of sources managed.
|
|
AddSource(source string)
|
|
// AllReady returns true if the currently configured sources have all been seen.
|
|
AllReady() bool
|
|
}
|
|
|
|
// NewSourcesReady returns a SourcesReady with the specified function.
|
|
func NewSourcesReady(sourcesReadyFn SourcesReadyFn) SourcesReady {
|
|
return &sourcesImpl{
|
|
sourcesSeen: sets.NewString(),
|
|
sourcesReadyFn: sourcesReadyFn,
|
|
}
|
|
}
|
|
|
|
// sourcesImpl implements SourcesReady. It is thread-safe.
|
|
type sourcesImpl struct {
|
|
// lock protects access to sources seen.
|
|
lock sync.RWMutex
|
|
// set of sources seen.
|
|
sourcesSeen sets.String
|
|
// sourcesReady is a function that evaluates if the sources are ready.
|
|
sourcesReadyFn SourcesReadyFn
|
|
}
|
|
|
|
// Add adds the specified source to the set of sources managed.
|
|
func (s *sourcesImpl) AddSource(source string) {
|
|
s.lock.Lock()
|
|
defer s.lock.Unlock()
|
|
s.sourcesSeen.Insert(source)
|
|
}
|
|
|
|
// AllReady returns true if each configured source is ready.
|
|
func (s *sourcesImpl) AllReady() bool {
|
|
s.lock.RLock()
|
|
defer s.lock.RUnlock()
|
|
return s.sourcesReadyFn(s.sourcesSeen)
|
|
}
|