26a6cdda86
TestWatchBasedManager was racing with the default namespace creation. To fix that flake and to ensure integration tests using a shared etcd don't accidentally overlap in the future, move the three main tests using the default namespace to separate namespaces, and have TestWatchBasedManager create that namespace before it runs. Make StartTestServer wait for default namespace creation, which will reduce other flakes until future changes completely remove use of default namespace. From a failed integration run: watch_manager_test.go:66: namespaces "default" not found watch_manager_test.go:66: namespaces "default" not found watch_manager_test.go:66: namespaces "default" not found
111 lines
3.3 KiB
Go
111 lines
3.3 KiB
Go
/*
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Copyright 2019 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 kubelet
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import (
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"fmt"
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"sync"
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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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"k8s.io/apimachinery/pkg/runtime"
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"k8s.io/apimachinery/pkg/runtime/schema"
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"k8s.io/apimachinery/pkg/util/wait"
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"k8s.io/apimachinery/pkg/watch"
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"k8s.io/client-go/kubernetes"
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kubeapiservertesting "k8s.io/kubernetes/cmd/kube-apiserver/app/testing"
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"k8s.io/kubernetes/pkg/kubelet/util/manager"
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"k8s.io/kubernetes/test/integration/framework"
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)
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func TestWatchBasedManager(t *testing.T) {
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testNamespace := "test-watch-based-manager"
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server := kubeapiservertesting.StartTestServerOrDie(t, nil, nil, framework.SharedEtcd())
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defer server.TearDownFn()
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server.ClientConfig.QPS = 10000
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client, err := kubernetes.NewForConfig(server.ClientConfig)
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if err != nil {
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t.Fatalf("unexpected error: %v", err)
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}
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if _, err := client.CoreV1().Namespaces().Create((&v1.Namespace{ObjectMeta: metav1.ObjectMeta{Name: testNamespace}})); err != nil {
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t.Fatal(err)
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}
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listObj := func(namespace string, options metav1.ListOptions) (runtime.Object, error) {
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return client.CoreV1().Secrets(namespace).List(options)
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}
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watchObj := func(namespace string, options metav1.ListOptions) (watch.Interface, error) {
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return client.CoreV1().Secrets(namespace).Watch(options)
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}
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newObj := func() runtime.Object { return &v1.Secret{} }
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store := manager.NewObjectCache(listObj, watchObj, newObj, schema.GroupResource{Group: "v1", Resource: "secrets"})
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// create 1000 secrets in parallel
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t.Log(time.Now(), "creating 1000 secrets")
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wg := sync.WaitGroup{}
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for i := 0; i < 10; i++ {
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wg.Add(1)
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go func(i int) {
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defer wg.Done()
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for j := 0; j < 100; j++ {
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name := fmt.Sprintf("s%d", i*100+j)
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if _, err := client.CoreV1().Secrets(testNamespace).Create(&v1.Secret{ObjectMeta: metav1.ObjectMeta{Name: name}}); err != nil {
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t.Fatal(err)
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}
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}
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fmt.Print(".")
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}(i)
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}
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wg.Wait()
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t.Log(time.Now(), "finished creating 1000 secrets")
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// fetch all secrets
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wg = sync.WaitGroup{}
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for i := 0; i < 10; i++ {
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wg.Add(1)
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go func(i int) {
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defer wg.Done()
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for j := 0; j < 100; j++ {
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name := fmt.Sprintf("s%d", i*100+j)
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start := time.Now()
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store.AddReference(testNamespace, name)
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err := wait.PollImmediate(10*time.Millisecond, 10*time.Second, func() (bool, error) {
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obj, err := store.Get(testNamespace, name)
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if err != nil {
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t.Logf("failed on %s, retrying: %v", name, err)
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return false, nil
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}
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if obj.(*v1.Secret).Name != name {
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return false, fmt.Errorf("wrong object: %v", obj.(*v1.Secret).Name)
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}
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return true, nil
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})
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if err != nil {
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t.Fatalf("failed on %s: %v", name, err)
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}
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if d := time.Since(start); d > time.Second {
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t.Logf("%s took %v", name, d)
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}
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}
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}(i)
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}
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wg.Wait()
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}
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