/*
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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 events
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import (
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"strconv"
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"testing"
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"time"
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"os"
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"strings"
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v1 "k8s.io/api/core/v1"
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eventsv1 "k8s.io/api/events/v1"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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k8sruntime "k8s.io/apimachinery/pkg/runtime"
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"k8s.io/apimachinery/pkg/util/wait"
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"k8s.io/client-go/kubernetes/scheme"
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restclient "k8s.io/client-go/rest"
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ref "k8s.io/client-go/tools/reference"
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)
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type testEventSeriesSink struct {
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OnCreate func(e *eventsv1.Event) (*eventsv1.Event, error)
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OnUpdate func(e *eventsv1.Event) (*eventsv1.Event, error)
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OnPatch func(e *eventsv1.Event, p []byte) (*eventsv1.Event, error)
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}
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// Create records the event for testing.
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func (t *testEventSeriesSink) Create(e *eventsv1.Event) (*eventsv1.Event, error) {
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if t.OnCreate != nil {
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return t.OnCreate(e)
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}
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return e, nil
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}
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// Update records the event for testing.
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func (t *testEventSeriesSink) Update(e *eventsv1.Event) (*eventsv1.Event, error) {
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if t.OnUpdate != nil {
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return t.OnUpdate(e)
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}
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return e, nil
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}
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// Patch records the event for testing.
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func (t *testEventSeriesSink) Patch(e *eventsv1.Event, p []byte) (*eventsv1.Event, error) {
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if t.OnPatch != nil {
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return t.OnPatch(e, p)
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}
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return e, nil
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}
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func TestEventSeriesf(t *testing.T) {
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hostname, _ := os.Hostname()
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testPod := &v1.Pod{
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ObjectMeta: metav1.ObjectMeta{
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Name: "foo",
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Namespace: "baz",
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UID: "bar",
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},
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}
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regarding, err := ref.GetPartialReference(scheme.Scheme, testPod, ".spec.containers[1]")
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if err != nil {
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t.Fatal(err)
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}
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related, err := ref.GetPartialReference(scheme.Scheme, testPod, ".spec.containers[0]")
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if err != nil {
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t.Fatal(err)
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}
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expectedEvent := &eventsv1.Event{
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ObjectMeta: metav1.ObjectMeta{
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Name: "foo",
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Namespace: "baz",
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},
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EventTime: metav1.MicroTime{time.Now()},
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ReportingController: "eventTest",
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ReportingInstance: "eventTest-" + hostname,
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Action: "started",
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Reason: "test",
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Regarding: *regarding,
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Related: related,
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Note: "some verbose message: 1",
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Type: v1.EventTypeNormal,
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}
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isomorphicEvent := expectedEvent.DeepCopy()
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nonIsomorphicEvent := expectedEvent.DeepCopy()
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nonIsomorphicEvent.Action = "stopped"
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expectedEvent.Series = &eventsv1.EventSeries{Count: 1}
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table := []struct {
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regarding k8sruntime.Object
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related k8sruntime.Object
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actual *eventsv1.Event
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elements []interface{}
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expect *eventsv1.Event
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expectUpdate bool
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}{
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{
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regarding: regarding,
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related: related,
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actual: isomorphicEvent,
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elements: []interface{}{1},
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expect: expectedEvent,
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expectUpdate: true,
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},
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{
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regarding: regarding,
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related: related,
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actual: nonIsomorphicEvent,
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elements: []interface{}{1},
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expect: nonIsomorphicEvent,
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expectUpdate: false,
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},
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}
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stopCh := make(chan struct{})
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createEvent := make(chan *eventsv1.Event)
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updateEvent := make(chan *eventsv1.Event)
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patchEvent := make(chan *eventsv1.Event)
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testEvents := testEventSeriesSink{
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OnCreate: func(event *eventsv1.Event) (*eventsv1.Event, error) {
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createEvent <- event
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return event, nil
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},
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OnUpdate: func(event *eventsv1.Event) (*eventsv1.Event, error) {
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updateEvent <- event
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return event, nil
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},
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OnPatch: func(event *eventsv1.Event, patch []byte) (*eventsv1.Event, error) {
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// event we receive is already patched, usually the sink uses it only to retrieve the name and namespace, here
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// we'll use it directly
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patchEvent <- event
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return event, nil
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},
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}
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eventBroadcaster := newBroadcaster(&testEvents, 0, map[eventKey]*eventsv1.Event{})
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recorder := eventBroadcaster.NewRecorder(scheme.Scheme, "eventTest")
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broadcaster := eventBroadcaster.(*eventBroadcasterImpl)
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// Don't call StartRecordingToSink, as we don't need neither refreshing event
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// series nor finishing them in this tests and additional events updated would
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// race with our expected ones.
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broadcaster.startRecordingEvents(stopCh)
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recorder.Eventf(regarding, related, isomorphicEvent.Type, isomorphicEvent.Reason, isomorphicEvent.Action, isomorphicEvent.Note, []interface{}{1})
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// read from the chan as this was needed only to populate the cache
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<-createEvent
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for index, item := range table {
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actual := item.actual
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recorder.Eventf(item.regarding, item.related, actual.Type, actual.Reason, actual.Action, actual.Note, item.elements)
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// validate event
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if item.expectUpdate {
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actualEvent := <-patchEvent
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t.Logf("%v - validating event affected by patch request", index)
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validateEvent(strconv.Itoa(index), true, actualEvent, item.expect, t)
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} else {
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actualEvent := <-createEvent
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t.Logf("%v - validating event affected by a create request", index)
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validateEvent(strconv.Itoa(index), false, actualEvent, item.expect, t)
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}
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}
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close(stopCh)
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}
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func validateEvent(messagePrefix string, expectedUpdate bool, actualEvent *eventsv1.Event, expectedEvent *eventsv1.Event, t *testing.T) {
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recvEvent := *actualEvent
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// Just check that the timestamp was set.
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if recvEvent.EventTime.IsZero() {
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t.Errorf("%v - timestamp wasn't set: %#v", messagePrefix, recvEvent)
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}
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if expectedUpdate {
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if recvEvent.Series == nil {
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t.Errorf("%v - Series was nil but expected: %#v", messagePrefix, recvEvent.Series)
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} else {
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if recvEvent.Series.Count != expectedEvent.Series.Count {
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t.Errorf("%v - Series mismatch actual was: %#v but expected: %#v", messagePrefix, recvEvent.Series, expectedEvent.Series)
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}
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}
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// Check that name has the right prefix.
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if n, en := recvEvent.Name, expectedEvent.Name; !strings.HasPrefix(n, en) {
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t.Errorf("%v - Name '%v' does not contain prefix '%v'", messagePrefix, n, en)
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}
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} else {
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if recvEvent.Series != nil {
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t.Errorf("%v - series was expected to be nil but was: %#v", messagePrefix, recvEvent.Series)
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}
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}
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}
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func TestFinishSeries(t *testing.T) {
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hostname, _ := os.Hostname()
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testPod := &v1.Pod{
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ObjectMeta: metav1.ObjectMeta{
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SelfLink: "/api/v1/namespaces/baz/pods/foo",
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Name: "foo",
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Namespace: "baz",
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UID: "bar",
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},
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}
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regarding, err := ref.GetPartialReference(scheme.Scheme, testPod, ".spec.containers[1]")
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if err != nil {
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t.Fatal(err)
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}
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related, err := ref.GetPartialReference(scheme.Scheme, testPod, ".spec.containers[0]")
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if err != nil {
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t.Fatal(err)
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}
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LastObservedTime := metav1.MicroTime{Time: time.Now().Add(-9 * time.Minute)}
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createEvent := make(chan *eventsv1.Event, 10)
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updateEvent := make(chan *eventsv1.Event, 10)
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patchEvent := make(chan *eventsv1.Event, 10)
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testEvents := testEventSeriesSink{
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OnCreate: func(event *eventsv1.Event) (*eventsv1.Event, error) {
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createEvent <- event
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return event, nil
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},
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OnUpdate: func(event *eventsv1.Event) (*eventsv1.Event, error) {
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updateEvent <- event
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return event, nil
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},
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OnPatch: func(event *eventsv1.Event, patch []byte) (*eventsv1.Event, error) {
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// event we receive is already patched, usually the sink uses it
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// only to retrieve the name and namespace, here we'll use it directly
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patchEvent <- event
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return event, nil
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},
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}
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cache := map[eventKey]*eventsv1.Event{}
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eventBroadcaster := newBroadcaster(&testEvents, 0, cache).(*eventBroadcasterImpl)
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recorder := eventBroadcaster.NewRecorder(scheme.Scheme, "k8s.io/kube-foo").(*recorderImpl)
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cachedEvent := recorder.makeEvent(regarding, related, metav1.MicroTime{time.Now()}, v1.EventTypeNormal, "test", "some verbose message: 1", "eventTest", "eventTest-"+hostname, "started")
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nonFinishedEvent := cachedEvent.DeepCopy()
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nonFinishedEvent.ReportingController = "nonFinished-controller"
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cachedEvent.Series = &eventsv1.EventSeries{
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Count: 10,
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LastObservedTime: LastObservedTime,
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}
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cache[getKey(cachedEvent)] = cachedEvent
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cache[getKey(nonFinishedEvent)] = nonFinishedEvent
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eventBroadcaster.finishSeries()
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select {
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case actualEvent := <-patchEvent:
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t.Logf("validating event affected by patch request")
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eventBroadcaster.mu.Lock()
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defer eventBroadcaster.mu.Unlock()
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if len(cache) != 1 {
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t.Errorf("cache should be empty, but instead got a size of %v", len(cache))
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}
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if !actualEvent.Series.LastObservedTime.Equal(&cachedEvent.Series.LastObservedTime) {
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t.Errorf("series was expected be seen with LastObservedTime %v, but instead got %v ", cachedEvent.Series.LastObservedTime, actualEvent.Series.LastObservedTime)
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}
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// check that we emitted only one event
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if len(patchEvent) != 0 || len(createEvent) != 0 || len(updateEvent) != 0 {
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t.Errorf("exactly one event should be emitted, but got %v", len(patchEvent))
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}
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case <-time.After(wait.ForeverTestTimeout):
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t.Fatalf("timeout after %v", wait.ForeverTestTimeout)
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}
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}
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func TestRefreshExistingEventSeries(t *testing.T) {
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hostname, _ := os.Hostname()
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testPod := &v1.Pod{
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ObjectMeta: metav1.ObjectMeta{
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SelfLink: "/api/v1/namespaces/baz/pods/foo",
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Name: "foo",
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Namespace: "baz",
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UID: "bar",
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},
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}
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regarding, err := ref.GetPartialReference(scheme.Scheme, testPod, ".spec.containers[1]")
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if err != nil {
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t.Fatal(err)
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}
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related, err := ref.GetPartialReference(scheme.Scheme, testPod, ".spec.containers[0]")
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if err != nil {
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t.Fatal(err)
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}
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LastObservedTime := metav1.MicroTime{Time: time.Now().Add(-9 * time.Minute)}
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createEvent := make(chan *eventsv1.Event, 10)
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updateEvent := make(chan *eventsv1.Event, 10)
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patchEvent := make(chan *eventsv1.Event, 10)
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table := []struct {
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patchFunc func(event *eventsv1.Event, patch []byte) (*eventsv1.Event, error)
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}{
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{
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patchFunc: func(event *eventsv1.Event, patch []byte) (*eventsv1.Event, error) {
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// event we receive is already patched, usually the sink uses it
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//only to retrieve the name and namespace, here we'll use it directly.
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patchEvent <- event
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return event, nil
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},
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},
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{
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patchFunc: func(event *eventsv1.Event, patch []byte) (*eventsv1.Event, error) {
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// we simulate an apiserver error here
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patchEvent <- nil
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return nil, &restclient.RequestConstructionError{}
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},
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},
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}
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for _, item := range table {
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testEvents := testEventSeriesSink{
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OnCreate: func(event *eventsv1.Event) (*eventsv1.Event, error) {
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createEvent <- event
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return event, nil
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},
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OnUpdate: func(event *eventsv1.Event) (*eventsv1.Event, error) {
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updateEvent <- event
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return event, nil
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},
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OnPatch: item.patchFunc,
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}
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cache := map[eventKey]*eventsv1.Event{}
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eventBroadcaster := newBroadcaster(&testEvents, 0, cache).(*eventBroadcasterImpl)
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recorder := eventBroadcaster.NewRecorder(scheme.Scheme, "k8s.io/kube-foo").(*recorderImpl)
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cachedEvent := recorder.makeEvent(regarding, related, metav1.MicroTime{time.Now()}, v1.EventTypeNormal, "test", "some verbose message: 1", "eventTest", "eventTest-"+hostname, "started")
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cachedEvent.Series = &eventsv1.EventSeries{
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Count: 10,
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LastObservedTime: LastObservedTime,
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}
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cacheKey := getKey(cachedEvent)
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cache[cacheKey] = cachedEvent
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eventBroadcaster.refreshExistingEventSeries()
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select {
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case <-patchEvent:
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t.Logf("validating event affected by patch request")
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eventBroadcaster.mu.Lock()
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defer eventBroadcaster.mu.Unlock()
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if len(cache) != 1 {
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t.Errorf("cache should be with same size, but instead got a size of %v", len(cache))
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}
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// check that we emitted only one event
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if len(patchEvent) != 0 || len(createEvent) != 0 || len(updateEvent) != 0 {
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t.Errorf("exactly one event should be emitted, but got %v", len(patchEvent))
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}
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cacheEvent, exists := cache[cacheKey]
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if cacheEvent == nil || !exists {
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t.Errorf("expected event to exist and not being nil, but instead event: %v and exists: %v", cacheEvent, exists)
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}
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case <-time.After(wait.ForeverTestTimeout):
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t.Fatalf("timeout after %v", wait.ForeverTestTimeout)
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}
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}
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}
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