mirror of
https://github.com/etcd-io/etcd.git
synced 2024-09-27 06:25:44 +00:00
114 lines
2.3 KiB
Go
114 lines
2.3 KiB
Go
// Copyright 2016 The etcd Authors
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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 (
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"context"
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"fmt"
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"math/rand"
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"net"
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"net/http"
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"sync"
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"sync/atomic"
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"time"
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"golang.org/x/time/rate"
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clientV2 "github.com/coreos/etcd/client"
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)
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type v2Stresser struct {
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Endpoint string
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keySize int
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keySuffixRange int
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N int
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rateLimiter *rate.Limiter
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wg sync.WaitGroup
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atomicModifiedKey int64
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cancel func()
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}
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func (s *v2Stresser) Stress() error {
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cfg := clientV2.Config{
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Endpoints: []string{s.Endpoint},
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Transport: &http.Transport{
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Dial: (&net.Dialer{
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Timeout: time.Second,
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KeepAlive: 30 * time.Second,
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}).Dial,
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MaxIdleConnsPerHost: s.N,
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},
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}
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c, err := clientV2.New(cfg)
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if err != nil {
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return err
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}
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kv := clientV2.NewKeysAPI(c)
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ctx, cancel := context.WithCancel(context.Background())
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s.cancel = cancel
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s.wg.Add(s.N)
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for i := 0; i < s.N; i++ {
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go func() {
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defer s.wg.Done()
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s.run(ctx, kv)
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}()
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}
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return nil
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}
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func (s *v2Stresser) run(ctx context.Context, kv clientV2.KeysAPI) {
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for {
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if err := s.rateLimiter.Wait(ctx); err == context.Canceled {
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return
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}
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setctx, setcancel := context.WithTimeout(ctx, clientV2.DefaultRequestTimeout)
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key := fmt.Sprintf("foo%016x", rand.Intn(s.keySuffixRange))
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_, err := kv.Set(setctx, key, string(randBytes(s.keySize)), nil)
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if err == nil {
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atomic.AddInt64(&s.atomicModifiedKey, 1)
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}
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setcancel()
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if err == context.Canceled {
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return
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}
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}
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}
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func (s *v2Stresser) Cancel() {
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s.cancel()
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s.wg.Wait()
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}
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func (s *v2Stresser) ModifiedKeys() int64 {
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return atomic.LoadInt64(&s.atomicModifiedKey)
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}
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func (s *v2Stresser) Checker() Checker { return nil }
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func randBytes(size int) []byte {
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data := make([]byte, size)
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for i := 0; i < size; i++ {
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data[i] = byte(int('a') + rand.Intn(26))
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}
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return data
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}
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