build: move e2e dependencies into e2e/go.mod

Several packages are only used while running the e2e suite. These
packages are less important to update, as the they can not influence the
final executable that is part of the Ceph-CSI container-image.

By moving these dependencies out of the main Ceph-CSI go.mod, it is
easier to identify if a reported CVE affects Ceph-CSI, or only the
testing (like most of the Kubernetes CVEs).

Signed-off-by: Niels de Vos <ndevos@ibm.com>

e2e/vendor/k8s.io/client-go/tools/events/OWNERS

@@ -0,0 +1,10 @@
+# See the OWNERS docs at https://go.k8s.io/owners
+
+approvers:
+  - sig-instrumentation-approvers
+  - wojtek-t
+reviewers:
+  - sig-instrumentation-reviewers
+  - wojtek-t
+emeritus_approvers:
+  - yastij

e2e/vendor/k8s.io/client-go/tools/events/doc.go

@@ -0,0 +1,19 @@
+/*
+Copyright 2019 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// Package events has all client logic for recording and reporting
+// "k8s.io/api/events/v1".Event events.
+package events // import "k8s.io/client-go/tools/events"

e2e/vendor/k8s.io/client-go/tools/events/event_broadcaster.go

@@ -0,0 +1,457 @@
+/*
+Copyright 2019 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package events
+
+import (
+	"context"
+	"fmt"
+	"os"
+	"sync"
+	"time"
+
+	corev1 "k8s.io/api/core/v1"
+	eventsv1 "k8s.io/api/events/v1"
+	"k8s.io/apimachinery/pkg/api/errors"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"k8s.io/apimachinery/pkg/runtime"
+	"k8s.io/apimachinery/pkg/types"
+	"k8s.io/apimachinery/pkg/util/json"
+	utilruntime "k8s.io/apimachinery/pkg/util/runtime"
+	"k8s.io/apimachinery/pkg/util/strategicpatch"
+	"k8s.io/apimachinery/pkg/util/wait"
+	"k8s.io/apimachinery/pkg/watch"
+	clientset "k8s.io/client-go/kubernetes"
+	"k8s.io/client-go/kubernetes/scheme"
+	typedv1core "k8s.io/client-go/kubernetes/typed/core/v1"
+	typedeventsv1 "k8s.io/client-go/kubernetes/typed/events/v1"
+	restclient "k8s.io/client-go/rest"
+	"k8s.io/client-go/tools/record"
+	"k8s.io/client-go/tools/record/util"
+	"k8s.io/klog/v2"
+	"k8s.io/utils/clock"
+)
+
+const (
+	maxTriesPerEvent = 12
+	finishTime       = 6 * time.Minute
+	refreshTime      = 30 * time.Minute
+	maxQueuedEvents  = 1000
+)
+
+var defaultSleepDuration = 10 * time.Second
+
+// TODO: validate impact of copying and investigate hashing
+type eventKey struct {
+	eventType           string
+	action              string
+	reason              string
+	reportingController string
+	reportingInstance   string
+	regarding           corev1.ObjectReference
+	related             corev1.ObjectReference
+}
+
+type eventBroadcasterImpl struct {
+	*watch.Broadcaster
+	mu            sync.Mutex
+	eventCache    map[eventKey]*eventsv1.Event
+	sleepDuration time.Duration
+	sink          EventSink
+}
+
+// EventSinkImpl wraps EventsV1Interface to implement EventSink.
+// TODO: this makes it easier for testing purpose and masks the logic of performing API calls.
+// Note that rollbacking to raw clientset should also be transparent.
+type EventSinkImpl struct {
+	Interface typedeventsv1.EventsV1Interface
+}
+
+// Create takes the representation of a event and creates it. Returns the server's representation of the event, and an error, if there is any.
+func (e *EventSinkImpl) Create(ctx context.Context, event *eventsv1.Event) (*eventsv1.Event, error) {
+	if event.Namespace == "" {
+		return nil, fmt.Errorf("can't create an event with empty namespace")
+	}
+	return e.Interface.Events(event.Namespace).Create(ctx, event, metav1.CreateOptions{})
+}
+
+// Update takes the representation of a event and updates it. Returns the server's representation of the event, and an error, if there is any.
+func (e *EventSinkImpl) Update(ctx context.Context, event *eventsv1.Event) (*eventsv1.Event, error) {
+	if event.Namespace == "" {
+		return nil, fmt.Errorf("can't update an event with empty namespace")
+	}
+	return e.Interface.Events(event.Namespace).Update(ctx, event, metav1.UpdateOptions{})
+}
+
+// Patch applies the patch and returns the patched event, and an error, if there is any.
+func (e *EventSinkImpl) Patch(ctx context.Context, event *eventsv1.Event, data []byte) (*eventsv1.Event, error) {
+	if event.Namespace == "" {
+		return nil, fmt.Errorf("can't patch an event with empty namespace")
+	}
+	return e.Interface.Events(event.Namespace).Patch(ctx, event.Name, types.StrategicMergePatchType, data, metav1.PatchOptions{})
+}
+
+// NewBroadcaster Creates a new event broadcaster.
+func NewBroadcaster(sink EventSink) EventBroadcaster {
+	return newBroadcaster(sink, defaultSleepDuration, map[eventKey]*eventsv1.Event{})
+}
+
+// NewBroadcasterForTest Creates a new event broadcaster for test purposes.
+func newBroadcaster(sink EventSink, sleepDuration time.Duration, eventCache map[eventKey]*eventsv1.Event) EventBroadcaster {
+	return &eventBroadcasterImpl{
+		Broadcaster:   watch.NewBroadcaster(maxQueuedEvents, watch.DropIfChannelFull),
+		eventCache:    eventCache,
+		sleepDuration: sleepDuration,
+		sink:          sink,
+	}
+}
+
+func (e *eventBroadcasterImpl) Shutdown() {
+	e.Broadcaster.Shutdown()
+}
+
+// refreshExistingEventSeries refresh events TTL
+func (e *eventBroadcasterImpl) refreshExistingEventSeries(ctx context.Context) {
+	// TODO: Investigate whether lock contention won't be a problem
+	e.mu.Lock()
+	defer e.mu.Unlock()
+	for isomorphicKey, event := range e.eventCache {
+		if event.Series != nil {
+			if recordedEvent, retry := recordEvent(ctx, e.sink, event); !retry {
+				if recordedEvent != nil {
+					e.eventCache[isomorphicKey] = recordedEvent
+				}
+			}
+		}
+	}
+}
+
+// finishSeries checks if a series has ended and either:
+// - write final count to the apiserver
+// - delete a singleton event (i.e. series field is nil) from the cache
+func (e *eventBroadcasterImpl) finishSeries(ctx context.Context) {
+	// TODO: Investigate whether lock contention won't be a problem
+	e.mu.Lock()
+	defer e.mu.Unlock()
+	for isomorphicKey, event := range e.eventCache {
+		eventSerie := event.Series
+		if eventSerie != nil {
+			if eventSerie.LastObservedTime.Time.Before(time.Now().Add(-finishTime)) {
+				if _, retry := recordEvent(ctx, e.sink, event); !retry {
+					delete(e.eventCache, isomorphicKey)
+				}
+			}
+		} else if event.EventTime.Time.Before(time.Now().Add(-finishTime)) {
+			delete(e.eventCache, isomorphicKey)
+		}
+	}
+}
+
+// NewRecorder returns an EventRecorder that records events with the given event source.
+func (e *eventBroadcasterImpl) NewRecorder(scheme *runtime.Scheme, reportingController string) EventRecorderLogger {
+	hostname, _ := os.Hostname()
+	reportingInstance := reportingController + "-" + hostname
+	return &recorderImplLogger{recorderImpl: &recorderImpl{scheme, reportingController, reportingInstance, e.Broadcaster, clock.RealClock{}}, logger: klog.Background()}
+}
+
+func (e *eventBroadcasterImpl) recordToSink(ctx context.Context, event *eventsv1.Event, clock clock.Clock) {
+	// Make a copy before modification, because there could be multiple listeners.
+	eventCopy := event.DeepCopy()
+	go func() {
+		evToRecord := func() *eventsv1.Event {
+			e.mu.Lock()
+			defer e.mu.Unlock()
+			eventKey := getKey(eventCopy)
+			isomorphicEvent, isIsomorphic := e.eventCache[eventKey]
+			if isIsomorphic {
+				if isomorphicEvent.Series != nil {
+					isomorphicEvent.Series.Count++
+					isomorphicEvent.Series.LastObservedTime = metav1.MicroTime{Time: clock.Now()}
+					return nil
+				}
+				isomorphicEvent.Series = &eventsv1.EventSeries{
+					Count:            2,
+					LastObservedTime: metav1.MicroTime{Time: clock.Now()},
+				}
+				// Make a copy of the Event to make sure that recording it
+				// doesn't mess with the object stored in cache.
+				return isomorphicEvent.DeepCopy()
+			}
+			e.eventCache[eventKey] = eventCopy
+			// Make a copy of the Event to make sure that recording it doesn't
+			// mess with the object stored in cache.
+			return eventCopy.DeepCopy()
+		}()
+		if evToRecord != nil {
+			// TODO: Add a metric counting the number of recording attempts
+			e.attemptRecording(ctx, evToRecord)
+			// We don't want the new recorded Event to be reflected in the
+			// client's cache because server-side mutations could mess with the
+			// aggregation mechanism used by the client.
+		}
+	}()
+}
+
+func (e *eventBroadcasterImpl) attemptRecording(ctx context.Context, event *eventsv1.Event) {
+	tries := 0
+	for {
+		if _, retry := recordEvent(ctx, e.sink, event); !retry {
+			return
+		}
+		tries++
+		if tries >= maxTriesPerEvent {
+			klog.FromContext(ctx).Error(nil, "Unable to write event (retry limit exceeded!)", "event", event)
+			return
+		}
+		// Randomize sleep so that various clients won't all be
+		// synced up if the master goes down. Give up when
+		// the context is canceled.
+		select {
+		case <-ctx.Done():
+			return
+		case <-time.After(wait.Jitter(e.sleepDuration, 0.25)):
+		}
+	}
+}
+
+func recordEvent(ctx context.Context, sink EventSink, event *eventsv1.Event) (*eventsv1.Event, bool) {
+	var newEvent *eventsv1.Event
+	var err error
+	isEventSeries := event.Series != nil
+	if isEventSeries {
+		patch, patchBytesErr := createPatchBytesForSeries(event)
+		if patchBytesErr != nil {
+			klog.FromContext(ctx).Error(patchBytesErr, "Unable to calculate diff, no merge is possible")
+			return nil, false
+		}
+		newEvent, err = sink.Patch(ctx, event, patch)
+	}
+	// Update can fail because the event may have been removed and it no longer exists.
+	if !isEventSeries || (isEventSeries && util.IsKeyNotFoundError(err)) {
+		// Making sure that ResourceVersion is empty on creation
+		event.ResourceVersion = ""
+		newEvent, err = sink.Create(ctx, event)
+	}
+	if err == nil {
+		return newEvent, false
+	}
+	// If we can't contact the server, then hold everything while we keep trying.
+	// Otherwise, something about the event is malformed and we should abandon it.
+	switch err.(type) {
+	case *restclient.RequestConstructionError:
+		// We will construct the request the same next time, so don't keep trying.
+		klog.FromContext(ctx).Error(err, "Unable to construct event (will not retry!)", "event", event)
+		return nil, false
+	case *errors.StatusError:
+		if errors.IsAlreadyExists(err) {
+			// If we tried to create an Event from an EventSerie, it means that
+			// the original Patch request failed because the Event we were
+			// trying to patch didn't exist. If the creation failed because the
+			// Event now exists, it is safe to retry.  This occurs when a new
+			// Event is emitted twice in a very short period of time.
+			if isEventSeries {
+				return nil, true
+			}
+			klog.FromContext(ctx).V(5).Info("Server rejected event (will not retry!)", "event", event, "err", err)
+		} else {
+			klog.FromContext(ctx).Error(err, "Server rejected event (will not retry!)", "event", event)
+		}
+		return nil, false
+	case *errors.UnexpectedObjectError:
+		// We don't expect this; it implies the server's response didn't match a
+		// known pattern. Go ahead and retry.
+	default:
+		// This case includes actual http transport errors. Go ahead and retry.
+	}
+	klog.FromContext(ctx).Error(err, "Unable to write event (may retry after sleeping)")
+	return nil, true
+}
+
+func createPatchBytesForSeries(event *eventsv1.Event) ([]byte, error) {
+	oldEvent := event.DeepCopy()
+	oldEvent.Series = nil
+	oldData, err := json.Marshal(oldEvent)
+	if err != nil {
+		return nil, err
+	}
+	newData, err := json.Marshal(event)
+	if err != nil {
+		return nil, err
+	}
+	return strategicpatch.CreateTwoWayMergePatch(oldData, newData, eventsv1.Event{})
+}
+
+func getKey(event *eventsv1.Event) eventKey {
+	key := eventKey{
+		eventType:           event.Type,
+		action:              event.Action,
+		reason:              event.Reason,
+		reportingController: event.ReportingController,
+		reportingInstance:   event.ReportingInstance,
+		regarding:           event.Regarding,
+	}
+	if event.Related != nil {
+		key.related = *event.Related
+	}
+	return key
+}
+
+// StartStructuredLogging starts sending events received from this EventBroadcaster to the structured logging function.
+// The return value can be ignored or used to stop recording, if desired.
+// TODO: this function should also return an error.
+//
+// Deprecated: use StartLogging instead.
+func (e *eventBroadcasterImpl) StartStructuredLogging(verbosity klog.Level) func() {
+	logger := klog.Background().V(int(verbosity))
+	stopWatcher, err := e.StartLogging(logger)
+	if err != nil {
+		logger.Error(err, "Failed to start event watcher")
+		return func() {}
+	}
+	return stopWatcher
+}
+
+// StartLogging starts sending events received from this EventBroadcaster to the structured logger.
+// To adjust verbosity, use the logger's V method (i.e. pass `logger.V(3)` instead of `logger`).
+// The returned function can be ignored or used to stop recording, if desired.
+func (e *eventBroadcasterImpl) StartLogging(logger klog.Logger) (func(), error) {
+	return e.StartEventWatcher(
+		func(obj runtime.Object) {
+			event, ok := obj.(*eventsv1.Event)
+			if !ok {
+				logger.Error(nil, "unexpected type, expected eventsv1.Event")
+				return
+			}
+			logger.Info("Event occurred", "object", klog.KRef(event.Regarding.Namespace, event.Regarding.Name), "kind", event.Regarding.Kind, "apiVersion", event.Regarding.APIVersion, "type", event.Type, "reason", event.Reason, "action", event.Action, "note", event.Note)
+		})
+}
+
+// StartEventWatcher starts sending events received from this EventBroadcaster to the given event handler function.
+// The return value is used to stop recording
+func (e *eventBroadcasterImpl) StartEventWatcher(eventHandler func(event runtime.Object)) (func(), error) {
+	watcher, err := e.Watch()
+	if err != nil {
+		return nil, err
+	}
+	go func() {
+		defer utilruntime.HandleCrash()
+		for {
+			watchEvent, ok := <-watcher.ResultChan()
+			if !ok {
+				return
+			}
+			eventHandler(watchEvent.Object)
+		}
+	}()
+	return watcher.Stop, nil
+}
+
+func (e *eventBroadcasterImpl) startRecordingEvents(ctx context.Context) error {
+	eventHandler := func(obj runtime.Object) {
+		event, ok := obj.(*eventsv1.Event)
+		if !ok {
+			klog.FromContext(ctx).Error(nil, "unexpected type, expected eventsv1.Event")
+			return
+		}
+		e.recordToSink(ctx, event, clock.RealClock{})
+	}
+	stopWatcher, err := e.StartEventWatcher(eventHandler)
+	if err != nil {
+		return err
+	}
+	go func() {
+		<-ctx.Done()
+		stopWatcher()
+	}()
+	return nil
+}
+
+// StartRecordingToSink starts sending events received from the specified eventBroadcaster to the given sink.
+// Deprecated: use StartRecordingToSinkWithContext instead.
+func (e *eventBroadcasterImpl) StartRecordingToSink(stopCh <-chan struct{}) {
+	err := e.StartRecordingToSinkWithContext(wait.ContextForChannel(stopCh))
+	if err != nil {
+		klog.Background().Error(err, "Failed to start recording to sink")
+	}
+}
+
+// StartRecordingToSinkWithContext starts sending events received from the specified eventBroadcaster to the given sink.
+func (e *eventBroadcasterImpl) StartRecordingToSinkWithContext(ctx context.Context) error {
+	go wait.UntilWithContext(ctx, e.refreshExistingEventSeries, refreshTime)
+	go wait.UntilWithContext(ctx, e.finishSeries, finishTime)
+	return e.startRecordingEvents(ctx)
+}
+
+type eventBroadcasterAdapterImpl struct {
+	coreClient          typedv1core.EventsGetter
+	coreBroadcaster     record.EventBroadcaster
+	eventsv1Client      typedeventsv1.EventsV1Interface
+	eventsv1Broadcaster EventBroadcaster
+}
+
+// NewEventBroadcasterAdapter creates a wrapper around new and legacy broadcasters to simplify
+// migration of individual components to the new Event API.
+//
+//logcheck:context // NewEventBroadcasterAdapterWithContext should be used instead because record.NewBroadcaster is called and works better when a context is supplied (contextual logging, cancellation).
+func NewEventBroadcasterAdapter(client clientset.Interface) EventBroadcasterAdapter {
+	return NewEventBroadcasterAdapterWithContext(context.Background(), client)
+}
+
+// NewEventBroadcasterAdapterWithContext creates a wrapper around new and legacy broadcasters to simplify
+// migration of individual components to the new Event API.
+func NewEventBroadcasterAdapterWithContext(ctx context.Context, client clientset.Interface) EventBroadcasterAdapter {
+	eventClient := &eventBroadcasterAdapterImpl{}
+	if _, err := client.Discovery().ServerResourcesForGroupVersion(eventsv1.SchemeGroupVersion.String()); err == nil {
+		eventClient.eventsv1Client = client.EventsV1()
+		eventClient.eventsv1Broadcaster = NewBroadcaster(&EventSinkImpl{Interface: eventClient.eventsv1Client})
+	}
+	// Even though there can soon exist cases when coreBroadcaster won't really be needed,
+	// we create it unconditionally because its overhead is minor and will simplify using usage
+	// patterns of this library in all components.
+	eventClient.coreClient = client.CoreV1()
+	eventClient.coreBroadcaster = record.NewBroadcaster(record.WithContext(ctx))
+	return eventClient
+}
+
+// StartRecordingToSink starts sending events received from the specified eventBroadcaster to the given sink.
+func (e *eventBroadcasterAdapterImpl) StartRecordingToSink(stopCh <-chan struct{}) {
+	if e.eventsv1Broadcaster != nil && e.eventsv1Client != nil {
+		e.eventsv1Broadcaster.StartRecordingToSink(stopCh)
+	}
+	if e.coreBroadcaster != nil && e.coreClient != nil {
+		e.coreBroadcaster.StartRecordingToSink(&typedv1core.EventSinkImpl{Interface: e.coreClient.Events("")})
+	}
+}
+
+func (e *eventBroadcasterAdapterImpl) NewRecorder(name string) EventRecorderLogger {
+	if e.eventsv1Broadcaster != nil && e.eventsv1Client != nil {
+		return e.eventsv1Broadcaster.NewRecorder(scheme.Scheme, name)
+	}
+	return record.NewEventRecorderAdapter(e.DeprecatedNewLegacyRecorder(name))
+}
+
+func (e *eventBroadcasterAdapterImpl) DeprecatedNewLegacyRecorder(name string) record.EventRecorderLogger {
+	return e.coreBroadcaster.NewRecorder(scheme.Scheme, corev1.EventSource{Component: name})
+}
+
+func (e *eventBroadcasterAdapterImpl) Shutdown() {
+	if e.coreBroadcaster != nil {
+		e.coreBroadcaster.Shutdown()
+	}
+	if e.eventsv1Broadcaster != nil {
+		e.eventsv1Broadcaster.Shutdown()
+	}
+}

e2e/vendor/k8s.io/client-go/tools/events/event_recorder.go

@@ -0,0 +1,113 @@
+/*
+Copyright 2019 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package events
+
+import (
+	"fmt"
+	"time"
+
+	v1 "k8s.io/api/core/v1"
+	eventsv1 "k8s.io/api/events/v1"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"k8s.io/apimachinery/pkg/runtime"
+	utilruntime "k8s.io/apimachinery/pkg/util/runtime"
+	"k8s.io/apimachinery/pkg/watch"
+	"k8s.io/client-go/tools/record/util"
+	"k8s.io/client-go/tools/reference"
+	"k8s.io/klog/v2"
+	"k8s.io/utils/clock"
+)
+
+type recorderImpl struct {
+	scheme              *runtime.Scheme
+	reportingController string
+	reportingInstance   string
+	*watch.Broadcaster
+	clock clock.Clock
+}
+
+var _ EventRecorder = &recorderImpl{}
+
+func (recorder *recorderImpl) Eventf(regarding runtime.Object, related runtime.Object, eventtype, reason, action, note string, args ...interface{}) {
+	recorder.eventf(klog.Background(), regarding, related, eventtype, reason, action, note, args...)
+}
+
+type recorderImplLogger struct {
+	*recorderImpl
+	logger klog.Logger
+}
+
+var _ EventRecorderLogger = &recorderImplLogger{}
+
+func (recorder *recorderImplLogger) Eventf(regarding runtime.Object, related runtime.Object, eventtype, reason, action, note string, args ...interface{}) {
+	recorder.eventf(recorder.logger, regarding, related, eventtype, reason, action, note, args...)
+}
+
+func (recorder *recorderImplLogger) WithLogger(logger klog.Logger) EventRecorderLogger {
+	return &recorderImplLogger{recorderImpl: recorder.recorderImpl, logger: logger}
+}
+
+func (recorder *recorderImpl) eventf(logger klog.Logger, regarding runtime.Object, related runtime.Object, eventtype, reason, action, note string, args ...interface{}) {
+	timestamp := metav1.MicroTime{Time: time.Now()}
+	message := fmt.Sprintf(note, args...)
+	refRegarding, err := reference.GetReference(recorder.scheme, regarding)
+	if err != nil {
+		logger.Error(err, "Could not construct reference, will not report event", "object", regarding, "eventType", eventtype, "reason", reason, "message", message)
+		return
+	}
+
+	var refRelated *v1.ObjectReference
+	if related != nil {
+		refRelated, err = reference.GetReference(recorder.scheme, related)
+		if err != nil {
+			logger.V(9).Info("Could not construct reference", "object", related, "err", err)
+		}
+	}
+	if !util.ValidateEventType(eventtype) {
+		logger.Error(nil, "Unsupported event type", "eventType", eventtype)
+		return
+	}
+	event := recorder.makeEvent(refRegarding, refRelated, timestamp, eventtype, reason, message, recorder.reportingController, recorder.reportingInstance, action)
+	go func() {
+		defer utilruntime.HandleCrash()
+		recorder.Action(watch.Added, event)
+	}()
+}
+
+func (recorder *recorderImpl) makeEvent(refRegarding *v1.ObjectReference, refRelated *v1.ObjectReference, timestamp metav1.MicroTime, eventtype, reason, message string, reportingController string, reportingInstance string, action string) *eventsv1.Event {
+	t := metav1.Time{Time: recorder.clock.Now()}
+	namespace := refRegarding.Namespace
+	if namespace == "" {
+		namespace = metav1.NamespaceDefault
+	}
+	return &eventsv1.Event{
+		ObjectMeta: metav1.ObjectMeta{
+			Name:      fmt.Sprintf("%v.%x", refRegarding.Name, t.UnixNano()),
+			Namespace: namespace,
+		},
+		EventTime:           timestamp,
+		Series:              nil,
+		ReportingController: reportingController,
+		ReportingInstance:   reportingInstance,
+		Action:              action,
+		Reason:              reason,
+		Regarding:           *refRegarding,
+		Related:             refRelated,
+		Note:                message,
+		Type:                eventtype,
+	}
+}

e2e/vendor/k8s.io/client-go/tools/events/fake.go

@@ -0,0 +1,52 @@
+/*
+Copyright 2019 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package events
+
+import (
+	"fmt"
+
+	"k8s.io/apimachinery/pkg/runtime"
+	"k8s.io/klog/v2"
+)
+
+// FakeRecorder is used as a fake during tests. It is thread safe. It is usable
+// when created manually and not by NewFakeRecorder, however all events may be
+// thrown away in this case.
+type FakeRecorder struct {
+	Events chan string
+}
+
+var _ EventRecorderLogger = &FakeRecorder{}
+
+// Eventf emits an event
+func (f *FakeRecorder) Eventf(regarding runtime.Object, related runtime.Object, eventtype, reason, action, note string, args ...interface{}) {
+	if f.Events != nil {
+		f.Events <- fmt.Sprintf(eventtype+" "+reason+" "+note, args...)
+	}
+}
+
+func (f *FakeRecorder) WithLogger(logger klog.Logger) EventRecorderLogger {
+	return f
+}
+
+// NewFakeRecorder creates new fake event recorder with event channel with
+// buffer of given size.
+func NewFakeRecorder(bufferSize int) *FakeRecorder {
+	return &FakeRecorder{
+		Events: make(chan string, bufferSize),
+	}
+}

e2e/vendor/k8s.io/client-go/tools/events/helper.go

@@ -0,0 +1,64 @@
+/*
+Copyright 2021 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package events
+
+import (
+	"fmt"
+
+	corev1 "k8s.io/api/core/v1"
+	eventsv1 "k8s.io/api/events/v1"
+	eventsv1beta1 "k8s.io/api/events/v1beta1"
+	"k8s.io/apimachinery/pkg/fields"
+	"k8s.io/apimachinery/pkg/runtime/schema"
+	"k8s.io/apimachinery/pkg/types"
+)
+
+var mapping = map[schema.GroupVersion]string{
+	eventsv1.SchemeGroupVersion:      "regarding",
+	eventsv1beta1.SchemeGroupVersion: "regarding",
+	corev1.SchemeGroupVersion:        "involvedObject",
+}
+
+// GetFieldSelector returns the appropriate field selector based on the API version being used to communicate with the server.
+// The returned field selector can be used with List and Watch to filter desired events.
+func GetFieldSelector(eventsGroupVersion schema.GroupVersion, regardingGroupVersionKind schema.GroupVersionKind, regardingName string, regardingUID types.UID) (fields.Selector, error) {
+	field := fields.Set{}
+
+	if _, ok := mapping[eventsGroupVersion]; !ok {
+		return nil, fmt.Errorf("unknown version %v", eventsGroupVersion)
+	}
+	prefix := mapping[eventsGroupVersion]
+
+	if len(regardingName) > 0 {
+		field[prefix+".name"] = regardingName
+	}
+
+	if len(regardingGroupVersionKind.Kind) > 0 {
+		field[prefix+".kind"] = regardingGroupVersionKind.Kind
+	}
+
+	regardingGroupVersion := regardingGroupVersionKind.GroupVersion()
+	if !regardingGroupVersion.Empty() {
+		field[prefix+".apiVersion"] = regardingGroupVersion.String()
+	}
+
+	if len(regardingUID) > 0 {
+		field[prefix+".uid"] = string(regardingUID)
+	}
+
+	return field.AsSelector(), nil
+}

e2e/vendor/k8s.io/client-go/tools/events/interfaces.go

@@ -0,0 +1,92 @@
+/*
+Copyright 2019 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package events
+
+import (
+	"context"
+
+	eventsv1 "k8s.io/api/events/v1"
+	"k8s.io/apimachinery/pkg/runtime"
+	internalevents "k8s.io/client-go/tools/internal/events"
+	"k8s.io/client-go/tools/record"
+	"k8s.io/klog/v2"
+)
+
+type EventRecorder = internalevents.EventRecorder
+type EventRecorderLogger = internalevents.EventRecorderLogger
+
+// EventBroadcaster knows how to receive events and send them to any EventSink, watcher, or log.
+type EventBroadcaster interface {
+	// StartRecordingToSink starts sending events received from the specified eventBroadcaster.
+	// Deprecated: use StartRecordingToSinkWithContext instead.
+	StartRecordingToSink(stopCh <-chan struct{})
+
+	// StartRecordingToSink starts sending events received from the specified eventBroadcaster.
+	StartRecordingToSinkWithContext(ctx context.Context) error
+
+	// NewRecorder returns an EventRecorder that can be used to send events to this EventBroadcaster
+	// with the event source set to the given event source.
+	NewRecorder(scheme *runtime.Scheme, reportingController string) EventRecorderLogger
+
+	// StartEventWatcher enables you to watch for emitted events without usage
+	// of StartRecordingToSink. This lets you also process events in a custom way (e.g. in tests).
+	// NOTE: events received on your eventHandler should be copied before being used.
+	// TODO: figure out if this can be removed.
+	StartEventWatcher(eventHandler func(event runtime.Object)) (func(), error)
+
+	// StartStructuredLogging starts sending events received from this EventBroadcaster to the structured
+	// logging function. The return value can be ignored or used to stop recording, if desired.
+	// Deprecated: use StartLogging instead.
+	StartStructuredLogging(verbosity klog.Level) func()
+
+	// StartLogging starts sending events received from this EventBroadcaster to the structured logger.
+	// To adjust verbosity, use the logger's V method (i.e. pass `logger.V(3)` instead of `logger`).
+	// The returned function can be ignored or used to stop recording, if desired.
+	StartLogging(logger klog.Logger) (func(), error)
+
+	// Shutdown shuts down the broadcaster
+	Shutdown()
+}
+
+// EventSink knows how to store events (client-go implements it.)
+// EventSink must respect the namespace that will be embedded in 'event'.
+// It is assumed that EventSink will return the same sorts of errors as
+// client-go's REST client.
+type EventSink interface {
+	Create(ctx context.Context, event *eventsv1.Event) (*eventsv1.Event, error)
+	Update(ctx context.Context, event *eventsv1.Event) (*eventsv1.Event, error)
+	Patch(ctx context.Context, oldEvent *eventsv1.Event, data []byte) (*eventsv1.Event, error)
+}
+
+// EventBroadcasterAdapter is a auxiliary interface to simplify migration to
+// the new events API. It is a wrapper around new and legacy broadcasters
+// that smartly chooses which one to use.
+//
+// Deprecated: This interface will be removed once migration is completed.
+type EventBroadcasterAdapter interface {
+	// StartRecordingToSink starts sending events received from the specified eventBroadcaster.
+	StartRecordingToSink(stopCh <-chan struct{})
+
+	// NewRecorder creates a new Event Recorder with specified name.
+	NewRecorder(name string) EventRecorderLogger
+
+	// DeprecatedNewLegacyRecorder creates a legacy Event Recorder with specific name.
+	DeprecatedNewLegacyRecorder(name string) record.EventRecorderLogger
+
+	// Shutdown shuts down the broadcaster.
+	Shutdown()
+}