mirror of
https://github.com/etcd-io/etcd.git
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58 lines
1.4 KiB
Go
58 lines
1.4 KiB
Go
// Copyright 2015 CoreOS, Inc.
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//
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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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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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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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package main
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import "math/rand"
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type failureKillMajority struct {
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description
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}
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func newFailureKillMajority() *failureKillMajority {
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return &failureKillMajority{
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description: "kill majority of the cluster",
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}
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}
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func (f *failureKillMajority) Inject(c *cluster, round int) error {
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for i := range getToKillMap(c.Size, round) {
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if err := c.Agents[i].Stop(); err != nil {
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return err
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}
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}
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return nil
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}
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func (f *failureKillMajority) Recover(c *cluster, round int) error {
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for i := range getToKillMap(c.Size, round) {
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if _, err := c.Agents[i].Restart(); err != nil {
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return err
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}
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}
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return c.WaitHealth()
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}
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func getToKillMap(size int, seed int) map[int]bool {
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m := make(map[int]bool)
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r := rand.New(rand.NewSource(int64(seed)))
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majority := size/2 + 1
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for {
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m[r.Intn(size)] = true
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if len(m) >= majority {
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return m
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}
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}
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}
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