130 lines
3.9 KiB
Go
130 lines
3.9 KiB
Go
/*
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Copyright 2020 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 apimachinery
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import (
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"context"
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"net/http/httptest"
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"net/http/httputil"
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"net/url"
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"testing"
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"time"
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corev1 "k8s.io/api/core/v1"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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"k8s.io/apimachinery/pkg/runtime"
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"k8s.io/apimachinery/pkg/watch"
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"k8s.io/client-go/kubernetes"
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restclient "k8s.io/client-go/rest"
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"k8s.io/client-go/tools/cache"
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kubectlproxy "k8s.io/kubectl/pkg/proxy"
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"k8s.io/kubernetes/test/integration/framework"
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)
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func TestWatchClientTimeout(t *testing.T) {
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masterConfig := framework.NewIntegrationTestMasterConfig()
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_, s, closeFn := framework.RunAMaster(masterConfig)
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defer closeFn()
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t.Run("direct", func(t *testing.T) {
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t.Logf("client at %s", s.URL)
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testWatchClientTimeouts(t, s.URL)
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})
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t.Run("reverse proxy", func(t *testing.T) {
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u, _ := url.Parse(s.URL)
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proxy := httputil.NewSingleHostReverseProxy(u)
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proxy.FlushInterval = -1
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proxyServer := httptest.NewServer(httputil.NewSingleHostReverseProxy(u))
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defer proxyServer.Close()
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t.Logf("client to %s, backend at %s", proxyServer.URL, s.URL)
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testWatchClientTimeouts(t, proxyServer.URL)
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})
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t.Run("kubectl proxy", func(t *testing.T) {
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kubectlProxyServer, err := kubectlproxy.NewServer("", "/", "/static/", nil, &restclient.Config{Host: s.URL, Timeout: 2 * time.Second}, 0)
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if err != nil {
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t.Fatal(err)
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}
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kubectlProxyListener, err := kubectlProxyServer.Listen("", 0)
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if err != nil {
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t.Fatal(err)
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}
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defer kubectlProxyListener.Close()
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go kubectlProxyServer.ServeOnListener(kubectlProxyListener)
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t.Logf("client to %s, backend at %s", kubectlProxyListener.Addr().String(), s.URL)
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testWatchClientTimeouts(t, "http://"+kubectlProxyListener.Addr().String())
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})
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}
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func testWatchClientTimeouts(t *testing.T, url string) {
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t.Run("timeout", func(t *testing.T) {
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testWatchClientTimeout(t, url, time.Second, 0)
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})
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t.Run("timeoutSeconds", func(t *testing.T) {
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testWatchClientTimeout(t, url, 0, time.Second)
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})
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t.Run("timeout+timeoutSeconds", func(t *testing.T) {
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testWatchClientTimeout(t, url, time.Second, time.Second)
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})
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}
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func testWatchClientTimeout(t *testing.T, serverURL string, timeout, timeoutSeconds time.Duration) {
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// client
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client, err := kubernetes.NewForConfig(&restclient.Config{Host: serverURL, Timeout: timeout})
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if err != nil {
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t.Fatal(err)
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}
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listCount := 0
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watchCount := 0
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stopCh := make(chan struct{})
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listWatch := &cache.ListWatch{
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ListFunc: func(options metav1.ListOptions) (runtime.Object, error) {
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t.Logf("listing (version=%s continue=%s)", options.ResourceVersion, options.Continue)
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listCount++
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if listCount > 1 {
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t.Errorf("listed more than once")
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close(stopCh)
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}
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return client.CoreV1().ConfigMaps(metav1.NamespaceAll).List(context.TODO(), options)
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},
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WatchFunc: func(options metav1.ListOptions) (watch.Interface, error) {
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t.Logf("watching (version=%s)", options.ResourceVersion)
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if timeoutSeconds != 0 {
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timeout := int64(timeoutSeconds / time.Second)
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options.TimeoutSeconds = &timeout
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}
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watchCount++
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if watchCount > 1 {
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// success, restarted watch
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close(stopCh)
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}
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return client.CoreV1().ConfigMaps(metav1.NamespaceAll).Watch(context.TODO(), options)
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},
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}
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_, informer := cache.NewIndexerInformer(listWatch, &corev1.ConfigMap{}, 30*time.Minute, cache.ResourceEventHandlerFuncs{}, cache.Indexers{})
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informer.Run(stopCh)
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select {
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case <-stopCh:
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case <-time.After(time.Minute):
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t.Fatal("timeout")
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}
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}
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