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2f6c4f5eab
All code must use the context from Ginkgo when doing API calls or polling for a change, otherwise the code would not return immediately when the test gets aborted.
117 lines
3.6 KiB
Go
117 lines
3.6 KiB
Go
/*
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Copyright 2017 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 scheduling
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import (
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"context"
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"fmt"
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"strings"
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"sync"
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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/util/wait"
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"k8s.io/apimachinery/pkg/watch"
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clientset "k8s.io/client-go/kubernetes"
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"k8s.io/client-go/tools/cache"
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"k8s.io/kubernetes/test/e2e/framework"
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"github.com/onsi/ginkgo/v2"
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)
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func scheduleSuccessEvent(ns, podName, nodeName string) func(*v1.Event) bool {
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return func(e *v1.Event) bool {
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return e.Type == v1.EventTypeNormal &&
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e.Reason == "Scheduled" &&
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strings.HasPrefix(e.Name, podName) &&
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strings.Contains(e.Message, fmt.Sprintf("Successfully assigned %v/%v to %v", ns, podName, nodeName))
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}
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}
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func scheduleFailureEvent(podName string) func(*v1.Event) bool {
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return func(e *v1.Event) bool {
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return strings.HasPrefix(e.Name, podName) &&
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e.Type == "Warning" &&
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e.Reason == "FailedScheduling"
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}
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}
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// Action is a function to be performed by the system.
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type Action func(ctx context.Context) error
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// observeEventAfterAction returns true if an event matching the predicate was emitted
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// from the system after performing the supplied action.
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func observeEventAfterAction(ctx context.Context, c clientset.Interface, ns string, eventPredicate func(*v1.Event) bool, action Action) (bool, error) {
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// TODO (pohly): add context support
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observedMatchingEvent := false
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informerStartedChan := make(chan struct{})
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var informerStartedGuard sync.Once
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// Create an informer to list/watch events from the test framework namespace.
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_, controller := cache.NewInformer(
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&cache.ListWatch{
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ListFunc: func(options metav1.ListOptions) (runtime.Object, error) {
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ls, err := c.CoreV1().Events(ns).List(ctx, options)
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return ls, err
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},
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WatchFunc: func(options metav1.ListOptions) (watch.Interface, error) {
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// Signal parent goroutine that watching has begun.
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defer informerStartedGuard.Do(func() { close(informerStartedChan) })
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w, err := c.CoreV1().Events(ns).Watch(ctx, options)
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return w, err
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},
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},
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&v1.Event{},
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0,
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cache.ResourceEventHandlerFuncs{
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AddFunc: func(obj interface{}) {
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e, ok := obj.(*v1.Event)
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if !ok {
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framework.Failf("Expected *v1.Event, got %T %v", obj, obj)
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}
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ginkgo.By(fmt.Sprintf("Considering event: \nType = [%s], Name = [%s], Reason = [%s], Message = [%s]", e.Type, e.Name, e.Reason, e.Message))
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if eventPredicate(e) {
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observedMatchingEvent = true
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}
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},
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},
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)
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// Start the informer and block this goroutine waiting for the started signal.
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informerStopChan := make(chan struct{})
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defer func() { close(informerStopChan) }()
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go controller.Run(informerStopChan)
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<-informerStartedChan
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// Invoke the action function.
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err := action(ctx)
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if err != nil {
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return false, err
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}
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// Poll whether the informer has found a matching event with a timeout.
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// Wait up 2 minutes polling every second.
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timeout := 2 * time.Minute
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interval := 1 * time.Second
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err = wait.PollWithContext(ctx, interval, timeout, func(ctx context.Context) (bool, error) {
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return observedMatchingEvent, nil
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})
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return err == nil, err
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}
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