| // 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 |
| } |