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stresser_composite.go
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/
stresser_composite.go
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// Copyright 2018 The etcd 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 tester
import "sync"
// compositeStresser implements a Stresser that runs a slice of
// stressing clients concurrently.
type compositeStresser struct {
stressers []Stresser
}
func (cs *compositeStresser) Stress() error {
for i, s := range cs.stressers {
if err := s.Stress(); err != nil {
for j := 0; j < i; j++ {
cs.stressers[j].Close()
}
return err
}
}
return nil
}
func (cs *compositeStresser) Pause() (ems map[string]int) {
var emu sync.Mutex
ems = make(map[string]int)
var wg sync.WaitGroup
wg.Add(len(cs.stressers))
for i := range cs.stressers {
go func(s Stresser) {
defer wg.Done()
errs := s.Pause()
for k, v := range errs {
emu.Lock()
ems[k] += v
emu.Unlock()
}
}(cs.stressers[i])
}
wg.Wait()
return ems
}
func (cs *compositeStresser) Close() (ems map[string]int) {
var emu sync.Mutex
ems = make(map[string]int)
var wg sync.WaitGroup
wg.Add(len(cs.stressers))
for i := range cs.stressers {
go func(s Stresser) {
defer wg.Done()
errs := s.Close()
for k, v := range errs {
emu.Lock()
ems[k] += v
emu.Unlock()
}
}(cs.stressers[i])
}
wg.Wait()
return ems
}
func (cs *compositeStresser) ModifiedKeys() (modifiedKey int64) {
for _, stress := range cs.stressers {
modifiedKey += stress.ModifiedKeys()
}
return modifiedKey
}