mirror of https://github.com/k3s-io/k3s
54 lines
1.4 KiB
Go
54 lines
1.4 KiB
Go
/*
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Copyright 2015 The Kubernetes Authors All rights reserved.
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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 election
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import (
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"sync"
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"k8s.io/kubernetes/pkg/watch"
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)
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// Fake allows for testing of anything consuming a MasterElector.
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type Fake struct {
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mux *watch.Broadcaster
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currentMaster Master
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lock sync.Mutex // Protect access of currentMaster
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}
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// NewFake makes a new fake MasterElector.
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func NewFake() *Fake {
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// 0 means block for clients.
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return &Fake{mux: watch.NewBroadcaster(0, watch.WaitIfChannelFull)}
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}
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func (f *Fake) ChangeMaster(newMaster Master) {
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f.lock.Lock()
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defer f.lock.Unlock()
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f.mux.Action(watch.Modified, newMaster)
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f.currentMaster = newMaster
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}
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func (f *Fake) Elect(path, id string) watch.Interface {
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f.lock.Lock()
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defer f.lock.Unlock()
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w := f.mux.Watch()
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if f.currentMaster != "" {
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f.mux.Action(watch.Modified, f.currentMaster)
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}
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return w
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}
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