mirror of
https://github.com/kubernetes/client-go.git
synced 2026-02-22 08:03:18 +00:00
111 lines
3.3 KiB
Go
111 lines
3.3 KiB
Go
/*
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Copyright The Kubernetes Authors.
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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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http://www.apache.org/licenses/LICENSE-2.0
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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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*/
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package cache
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import (
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"context"
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"errors"
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"fmt"
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"testing"
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"time"
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v1 "k8s.io/api/core/v1"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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fcache "k8s.io/client-go/tools/cache/testing"
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)
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const handlerWaitTime = time.Millisecond
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func BenchmarkAddWithSlowHandlers(b *testing.B) {
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for _, unlockWhileProcessing := range []bool{false, true} {
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b.Run(fmt.Sprintf("unlockWhileProcessing=%t", unlockWhileProcessing), func(b *testing.B) {
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ctx, cancel := context.WithCancel(context.Background())
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source := fcache.NewFakeControllerSource()
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b.Cleanup(func() {
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cancel()
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source.Shutdown()
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})
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testIDs := []string{"a-hello"}
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source.Add(&v1.Pod{ObjectMeta: metav1.ObjectMeta{Name: testIDs[0]}})
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store := NewStore(DeletionHandlingMetaNamespaceKeyFunc)
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fifoOptions := RealFIFOOptions{}
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if unlockWhileProcessing {
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fifoOptions.UnlockWhileProcessing = true
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fifoOptions.AtomicEvents = true
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} else {
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fifoOptions.KnownObjects = store
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}
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fifo := NewRealFIFOWithOptions(fifoOptions)
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handler := ResourceEventHandlerFuncs{
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UpdateFunc: func(oldObj, newObj interface{}) {
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time.Sleep(handlerWaitTime)
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},
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}
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cfg := &Config{
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Queue: fifo,
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ListerWatcher: source,
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ObjectType: &v1.Pod{},
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FullResyncPeriod: 0,
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Process: func(obj interface{}, isInInitialList bool) error {
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if deltas, ok := obj.(Deltas); ok {
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return processDeltas(handler, store, deltas, isInInitialList, DeletionHandlingMetaNamespaceKeyFunc)
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}
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return errors.New("object given as Process argument is not Deltas")
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},
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ProcessBatch: func(deltaList []Delta, isInInitialList bool) error {
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return processDeltasInBatch(handler, store, deltaList, isInInitialList, DeletionHandlingMetaNamespaceKeyFunc)
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},
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}
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c := New(cfg)
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go c.RunWithContext(ctx)
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if !WaitForCacheSync(ctx.Done(), c.HasSynced) {
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b.Fatal("Timed out waiting for cache sync")
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}
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// Producer: Modify object as fast as the handler can process it. This should ensure that the process func is always running.
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go func() {
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// Stop when the benchmark context is cancelled.
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ticker := time.NewTicker(handlerWaitTime)
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defer ticker.Stop()
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for {
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select {
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case <-ctx.Done():
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return
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case <-ticker.C:
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source.Modify(&v1.Pod{ObjectMeta: metav1.ObjectMeta{Name: testIDs[0]}})
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}
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}
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}()
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benchmarkReflectorWithSlowHandlers(b, fifo)
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})
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}
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}
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func benchmarkReflectorWithSlowHandlers(b *testing.B, fifo *RealFIFO) {
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b.ResetTimer()
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// Try adding an object to the queue, while the controller is processing other events.
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for i := 0; i < b.N; i++ {
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if err := fifo.Add(&v1.Pod{ObjectMeta: metav1.ObjectMeta{Name: "b-hello"}}); err != nil {
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b.Fatal(err)
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}
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}
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b.StopTimer()
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}
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