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tester.go
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tester.go
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// Copyright 2015 CoreOS, Inc.
//
// 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 main
import (
"log"
"sync"
"time"
)
type tester struct {
failures []failure
cluster *cluster
limit int
status Status
}
func (tt *tester) runLoop() {
tt.status.Since = time.Now()
tt.status.RoundLimit = tt.limit
tt.status.cluster = tt.cluster
for _, f := range tt.failures {
tt.status.Failures = append(tt.status.Failures, f.Desc())
}
for i := 0; i < tt.limit; i++ {
tt.status.setRound(i)
for j, f := range tt.failures {
tt.status.setCase(j)
if err := tt.cluster.WaitHealth(); err != nil {
log.Printf("etcd-tester: [round#%d case#%d] wait full health error: %v", i, j, err)
if err := tt.cleanup(i, j); err != nil {
log.Printf("etcd-tester: [round#%d case#%d] cleanup error: %v", i, j, err)
return
}
continue
}
log.Printf("etcd-tester: [round#%d case#%d] start failure %s", i, j, f.Desc())
log.Printf("etcd-tester: [round#%d case#%d] start injecting failure...", i, j)
if err := f.Inject(tt.cluster, i); err != nil {
log.Printf("etcd-tester: [round#%d case#%d] injection error: %v", i, j, err)
if err := tt.cleanup(i, j); err != nil {
log.Printf("etcd-tester: [round#%d case#%d] cleanup error: %v", i, j, err)
return
}
continue
}
log.Printf("etcd-tester: [round#%d case#%d] start recovering failure...", i, j)
if err := f.Recover(tt.cluster, i); err != nil {
log.Printf("etcd-tester: [round#%d case#%d] recovery error: %v", i, j, err)
if err := tt.cleanup(i, j); err != nil {
log.Printf("etcd-tester: [round#%d case#%d] cleanup error: %v", i, j, err)
return
}
continue
}
log.Printf("etcd-tester: [round#%d case#%d] succeed!", i, j)
}
}
}
func (tt *tester) cleanup(i, j int) error {
log.Printf("etcd-tester: [round#%d case#%d] cleaning up...", i, j)
if err := tt.cluster.Cleanup(); err != nil {
return err
}
return tt.cluster.Bootstrap()
}
type Status struct {
Since time.Time
Failures []string
RoundLimit int
Cluster ClusterStatus
cluster *cluster
mu sync.Mutex // guards Round and Case
Round int
Case int
}
// get gets a copy of status
func (s *Status) get() Status {
s.mu.Lock()
got := *s
cluster := s.cluster
s.mu.Unlock()
got.Cluster = cluster.Status()
return got
}
func (s *Status) setRound(r int) {
s.mu.Lock()
defer s.mu.Unlock()
s.Round = r
}
func (s *Status) setCase(c int) {
s.mu.Lock()
defer s.mu.Unlock()
s.Case = c
}