vendor files

vendor/k8s.io/apimachinery/pkg/watch/BUILD

@@ -0,0 +1,71 @@
+package(default_visibility = ["//visibility:public"])
+
+load(
+    "@io_bazel_rules_go//go:def.bzl",
+    "go_library",
+    "go_test",
+)
+
+go_library(
+    name = "go_default_library",
+    srcs = [
+        "doc.go",
+        "filter.go",
+        "mux.go",
+        "streamwatcher.go",
+        "until.go",
+        "watch.go",
+        "zz_generated.deepcopy.go",
+    ],
+    importpath = "k8s.io/apimachinery/pkg/watch",
+    deps = [
+        "//vendor/github.com/golang/glog:go_default_library",
+        "//vendor/k8s.io/apimachinery/pkg/runtime:go_default_library",
+        "//vendor/k8s.io/apimachinery/pkg/runtime/schema:go_default_library",
+        "//vendor/k8s.io/apimachinery/pkg/util/net:go_default_library",
+        "//vendor/k8s.io/apimachinery/pkg/util/runtime:go_default_library",
+        "//vendor/k8s.io/apimachinery/pkg/util/wait:go_default_library",
+    ],
+)
+
+go_test(
+    name = "go_default_xtest",
+    srcs = [
+        "filter_test.go",
+        "mux_test.go",
+        "streamwatcher_test.go",
+        "watch_test.go",
+    ],
+    importpath = "k8s.io/apimachinery/pkg/watch_test",
+    deps = [
+        "//vendor/k8s.io/apimachinery/pkg/runtime:go_default_library",
+        "//vendor/k8s.io/apimachinery/pkg/runtime/schema:go_default_library",
+        "//vendor/k8s.io/apimachinery/pkg/util/wait:go_default_library",
+        "//vendor/k8s.io/apimachinery/pkg/watch:go_default_library",
+    ],
+)
+
+go_test(
+    name = "go_default_test",
+    srcs = ["until_test.go"],
+    importpath = "k8s.io/apimachinery/pkg/watch",
+    library = ":go_default_library",
+    deps = [
+        "//vendor/k8s.io/apimachinery/pkg/runtime:go_default_library",
+        "//vendor/k8s.io/apimachinery/pkg/runtime/schema:go_default_library",
+        "//vendor/k8s.io/apimachinery/pkg/util/wait:go_default_library",
+    ],
+)
+
+filegroup(
+    name = "package-srcs",
+    srcs = glob(["**"]),
+    tags = ["automanaged"],
+    visibility = ["//visibility:private"],
+)
+
+filegroup(
+    name = "all-srcs",
+    srcs = [":package-srcs"],
+    tags = ["automanaged"],
+)

vendor/k8s.io/apimachinery/pkg/watch/doc.go

@@ -0,0 +1,19 @@
+/*
+Copyright 2014 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 watch contains a generic watchable interface, and a fake for
+// testing code that uses the watch interface.
+package watch // import "k8s.io/apimachinery/pkg/watch"

vendor/k8s.io/apimachinery/pkg/watch/filter.go

@@ -0,0 +1,109 @@
+/*
+Copyright 2014 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 watch
+
+import (
+	"sync"
+)
+
+// FilterFunc should take an event, possibly modify it in some way, and return
+// the modified event. If the event should be ignored, then return keep=false.
+type FilterFunc func(in Event) (out Event, keep bool)
+
+// Filter passes all events through f before allowing them to pass on.
+// Putting a filter on a watch, as an unavoidable side-effect due to the way
+// go channels work, effectively causes the watch's event channel to have its
+// queue length increased by one.
+//
+// WARNING: filter has a fatal flaw, in that it can't properly update the
+// Type field (Add/Modified/Deleted) to reflect items beginning to pass the
+// filter when they previously didn't.
+//
+func Filter(w Interface, f FilterFunc) Interface {
+	fw := &filteredWatch{
+		incoming: w,
+		result:   make(chan Event),
+		f:        f,
+	}
+	go fw.loop()
+	return fw
+}
+
+type filteredWatch struct {
+	incoming Interface
+	result   chan Event
+	f        FilterFunc
+}
+
+// ResultChan returns a channel which will receive filtered events.
+func (fw *filteredWatch) ResultChan() <-chan Event {
+	return fw.result
+}
+
+// Stop stops the upstream watch, which will eventually stop this watch.
+func (fw *filteredWatch) Stop() {
+	fw.incoming.Stop()
+}
+
+// loop waits for new values, filters them, and resends them.
+func (fw *filteredWatch) loop() {
+	defer close(fw.result)
+	for {
+		event, ok := <-fw.incoming.ResultChan()
+		if !ok {
+			break
+		}
+		filtered, keep := fw.f(event)
+		if keep {
+			fw.result <- filtered
+		}
+	}
+}
+
+// Recorder records all events that are sent from the watch until it is closed.
+type Recorder struct {
+	Interface
+
+	lock   sync.Mutex
+	events []Event
+}
+
+var _ Interface = &Recorder{}
+
+// NewRecorder wraps an Interface and records any changes sent across it.
+func NewRecorder(w Interface) *Recorder {
+	r := &Recorder{}
+	r.Interface = Filter(w, r.record)
+	return r
+}
+
+// record is a FilterFunc and tracks each received event.
+func (r *Recorder) record(in Event) (Event, bool) {
+	r.lock.Lock()
+	defer r.lock.Unlock()
+	r.events = append(r.events, in)
+	return in, true
+}
+
+// Events returns a copy of the events sent across this recorder.
+func (r *Recorder) Events() []Event {
+	r.lock.Lock()
+	defer r.lock.Unlock()
+	copied := make([]Event, len(r.events))
+	copy(copied, r.events)
+	return copied
+}

vendor/k8s.io/apimachinery/pkg/watch/filter_test.go

@@ -0,0 +1,84 @@
+/*
+Copyright 2014 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 watch_test
+
+import (
+	"reflect"
+	"testing"
+
+	. "k8s.io/apimachinery/pkg/watch"
+)
+
+func TestFilter(t *testing.T) {
+	table := []Event{
+		{Type: Added, Object: testType("foo")},
+		{Type: Added, Object: testType("bar")},
+		{Type: Added, Object: testType("baz")},
+		{Type: Added, Object: testType("qux")},
+		{Type: Added, Object: testType("zoo")},
+	}
+
+	source := NewFake()
+	filtered := Filter(source, func(e Event) (Event, bool) {
+		return e, e.Object.(testType)[0] != 'b'
+	})
+
+	go func() {
+		for _, item := range table {
+			source.Action(item.Type, item.Object)
+		}
+		source.Stop()
+	}()
+
+	var got []string
+	for {
+		event, ok := <-filtered.ResultChan()
+		if !ok {
+			break
+		}
+		got = append(got, string(event.Object.(testType)))
+	}
+
+	if e, a := []string{"foo", "qux", "zoo"}, got; !reflect.DeepEqual(e, a) {
+		t.Errorf("got %v, wanted %v", e, a)
+	}
+}
+
+func TestFilterStop(t *testing.T) {
+	source := NewFake()
+	filtered := Filter(source, func(e Event) (Event, bool) {
+		return e, e.Object.(testType)[0] != 'b'
+	})
+
+	go func() {
+		source.Add(testType("foo"))
+		filtered.Stop()
+	}()
+
+	var got []string
+	for {
+		event, ok := <-filtered.ResultChan()
+		if !ok {
+			break
+		}
+		got = append(got, string(event.Object.(testType)))
+	}
+
+	if e, a := []string{"foo"}, got; !reflect.DeepEqual(e, a) {
+		t.Errorf("got %v, wanted %v", e, a)
+	}
+}

vendor/k8s.io/apimachinery/pkg/watch/mux.go

@@ -0,0 +1,264 @@
+/*
+Copyright 2014 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 watch
+
+import (
+	"sync"
+
+	"k8s.io/apimachinery/pkg/runtime"
+	"k8s.io/apimachinery/pkg/runtime/schema"
+)
+
+// FullChannelBehavior controls how the Broadcaster reacts if a watcher's watch
+// channel is full.
+type FullChannelBehavior int
+
+const (
+	WaitIfChannelFull FullChannelBehavior = iota
+	DropIfChannelFull
+)
+
+// Buffer the incoming queue a little bit even though it should rarely ever accumulate
+// anything, just in case a few events are received in such a short window that
+// Broadcaster can't move them onto the watchers' queues fast enough.
+const incomingQueueLength = 25
+
+// Broadcaster distributes event notifications among any number of watchers. Every event
+// is delivered to every watcher.
+type Broadcaster struct {
+	// TODO: see if this lock is needed now that new watchers go through
+	// the incoming channel.
+	lock sync.Mutex
+
+	watchers     map[int64]*broadcasterWatcher
+	nextWatcher  int64
+	distributing sync.WaitGroup
+
+	incoming chan Event
+
+	// How large to make watcher's channel.
+	watchQueueLength int
+	// If one of the watch channels is full, don't wait for it to become empty.
+	// Instead just deliver it to the watchers that do have space in their
+	// channels and move on to the next event.
+	// It's more fair to do this on a per-watcher basis than to do it on the
+	// "incoming" channel, which would allow one slow watcher to prevent all
+	// other watchers from getting new events.
+	fullChannelBehavior FullChannelBehavior
+}
+
+// NewBroadcaster creates a new Broadcaster. queueLength is the maximum number of events to queue per watcher.
+// It is guaranteed that events will be distributed in the order in which they occur,
+// but the order in which a single event is distributed among all of the watchers is unspecified.
+func NewBroadcaster(queueLength int, fullChannelBehavior FullChannelBehavior) *Broadcaster {
+	m := &Broadcaster{
+		watchers:            map[int64]*broadcasterWatcher{},
+		incoming:            make(chan Event, incomingQueueLength),
+		watchQueueLength:    queueLength,
+		fullChannelBehavior: fullChannelBehavior,
+	}
+	m.distributing.Add(1)
+	go m.loop()
+	return m
+}
+
+const internalRunFunctionMarker = "internal-do-function"
+
+// a function type we can shoehorn into the queue.
+type functionFakeRuntimeObject func()
+
+func (obj functionFakeRuntimeObject) GetObjectKind() schema.ObjectKind {
+	return schema.EmptyObjectKind
+}
+func (obj functionFakeRuntimeObject) DeepCopyObject() runtime.Object {
+	if obj == nil {
+		return nil
+	}
+	// funcs are immutable. Hence, just return the original func.
+	return obj
+}
+
+// Execute f, blocking the incoming queue (and waiting for it to drain first).
+// The purpose of this terrible hack is so that watchers added after an event
+// won't ever see that event, and will always see any event after they are
+// added.
+func (b *Broadcaster) blockQueue(f func()) {
+	var wg sync.WaitGroup
+	wg.Add(1)
+	b.incoming <- Event{
+		Type: internalRunFunctionMarker,
+		Object: functionFakeRuntimeObject(func() {
+			defer wg.Done()
+			f()
+		}),
+	}
+	wg.Wait()
+}
+
+// Watch adds a new watcher to the list and returns an Interface for it.
+// Note: new watchers will only receive new events. They won't get an entire history
+// of previous events.
+func (m *Broadcaster) Watch() Interface {
+	var w *broadcasterWatcher
+	m.blockQueue(func() {
+		m.lock.Lock()
+		defer m.lock.Unlock()
+		id := m.nextWatcher
+		m.nextWatcher++
+		w = &broadcasterWatcher{
+			result:  make(chan Event, m.watchQueueLength),
+			stopped: make(chan struct{}),
+			id:      id,
+			m:       m,
+		}
+		m.watchers[id] = w
+	})
+	return w
+}
+
+// WatchWithPrefix adds a new watcher to the list and returns an Interface for it. It sends
+// queuedEvents down the new watch before beginning to send ordinary events from Broadcaster.
+// The returned watch will have a queue length that is at least large enough to accommodate
+// all of the items in queuedEvents.
+func (m *Broadcaster) WatchWithPrefix(queuedEvents []Event) Interface {
+	var w *broadcasterWatcher
+	m.blockQueue(func() {
+		m.lock.Lock()
+		defer m.lock.Unlock()
+		id := m.nextWatcher
+		m.nextWatcher++
+		length := m.watchQueueLength
+		if n := len(queuedEvents) + 1; n > length {
+			length = n
+		}
+		w = &broadcasterWatcher{
+			result:  make(chan Event, length),
+			stopped: make(chan struct{}),
+			id:      id,
+			m:       m,
+		}
+		m.watchers[id] = w
+		for _, e := range queuedEvents {
+			w.result <- e
+		}
+	})
+	return w
+}
+
+// stopWatching stops the given watcher and removes it from the list.
+func (m *Broadcaster) stopWatching(id int64) {
+	m.lock.Lock()
+	defer m.lock.Unlock()
+	w, ok := m.watchers[id]
+	if !ok {
+		// No need to do anything, it's already been removed from the list.
+		return
+	}
+	delete(m.watchers, id)
+	close(w.result)
+}
+
+// closeAll disconnects all watchers (presumably in response to a Shutdown call).
+func (m *Broadcaster) closeAll() {
+	m.lock.Lock()
+	defer m.lock.Unlock()
+	for _, w := range m.watchers {
+		close(w.result)
+	}
+	// Delete everything from the map, since presence/absence in the map is used
+	// by stopWatching to avoid double-closing the channel.
+	m.watchers = map[int64]*broadcasterWatcher{}
+}
+
+// Action distributes the given event among all watchers.
+func (m *Broadcaster) Action(action EventType, obj runtime.Object) {
+	m.incoming <- Event{action, obj}
+}
+
+// Shutdown disconnects all watchers (but any queued events will still be distributed).
+// You must not call Action or Watch* after calling Shutdown. This call blocks
+// until all events have been distributed through the outbound channels. Note
+// that since they can be buffered, this means that the watchers might not
+// have received the data yet as it can remain sitting in the buffered
+// channel.
+func (m *Broadcaster) Shutdown() {
+	close(m.incoming)
+	m.distributing.Wait()
+}
+
+// loop receives from m.incoming and distributes to all watchers.
+func (m *Broadcaster) loop() {
+	// Deliberately not catching crashes here. Yes, bring down the process if there's a
+	// bug in watch.Broadcaster.
+	for {
+		event, ok := <-m.incoming
+		if !ok {
+			break
+		}
+		if event.Type == internalRunFunctionMarker {
+			event.Object.(functionFakeRuntimeObject)()
+			continue
+		}
+		m.distribute(event)
+	}
+	m.closeAll()
+	m.distributing.Done()
+}
+
+// distribute sends event to all watchers. Blocking.
+func (m *Broadcaster) distribute(event Event) {
+	m.lock.Lock()
+	defer m.lock.Unlock()
+	if m.fullChannelBehavior == DropIfChannelFull {
+		for _, w := range m.watchers {
+			select {
+			case w.result <- event:
+			case <-w.stopped:
+			default: // Don't block if the event can't be queued.
+			}
+		}
+	} else {
+		for _, w := range m.watchers {
+			select {
+			case w.result <- event:
+			case <-w.stopped:
+			}
+		}
+	}
+}
+
+// broadcasterWatcher handles a single watcher of a broadcaster
+type broadcasterWatcher struct {
+	result  chan Event
+	stopped chan struct{}
+	stop    sync.Once
+	id      int64
+	m       *Broadcaster
+}
+
+// ResultChan returns a channel to use for waiting on events.
+func (mw *broadcasterWatcher) ResultChan() <-chan Event {
+	return mw.result
+}
+
+// Stop stops watching and removes mw from its list.
+func (mw *broadcasterWatcher) Stop() {
+	mw.stop.Do(func() {
+		close(mw.stopped)
+		mw.m.stopWatching(mw.id)
+	})
+}

vendor/k8s.io/apimachinery/pkg/watch/mux_test.go

@@ -0,0 +1,176 @@
+/*
+Copyright 2014 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 watch_test
+
+import (
+	"reflect"
+	"sync"
+	"testing"
+	"time"
+
+	"k8s.io/apimachinery/pkg/runtime"
+	"k8s.io/apimachinery/pkg/runtime/schema"
+	"k8s.io/apimachinery/pkg/util/wait"
+	. "k8s.io/apimachinery/pkg/watch"
+)
+
+type myType struct {
+	ID    string
+	Value string
+}
+
+func (obj *myType) GetObjectKind() schema.ObjectKind { return schema.EmptyObjectKind }
+func (obj *myType) DeepCopyObject() runtime.Object {
+	if obj == nil {
+		return nil
+	}
+	clone := *obj
+	return &clone
+}
+
+func TestBroadcaster(t *testing.T) {
+	table := []Event{
+		{Type: Added, Object: &myType{"foo", "hello world 1"}},
+		{Type: Added, Object: &myType{"bar", "hello world 2"}},
+		{Type: Modified, Object: &myType{"foo", "goodbye world 3"}},
+		{Type: Deleted, Object: &myType{"bar", "hello world 4"}},
+	}
+
+	// The broadcaster we're testing
+	m := NewBroadcaster(0, WaitIfChannelFull)
+
+	// Add a bunch of watchers
+	const testWatchers = 2
+	wg := sync.WaitGroup{}
+	wg.Add(testWatchers)
+	for i := 0; i < testWatchers; i++ {
+		// Verify that each watcher gets the events in the correct order
+		go func(watcher int, w Interface) {
+			tableLine := 0
+			for {
+				event, ok := <-w.ResultChan()
+				if !ok {
+					break
+				}
+				if e, a := table[tableLine], event; !reflect.DeepEqual(e, a) {
+					t.Errorf("Watcher %v, line %v: Expected (%v, %#v), got (%v, %#v)",
+						watcher, tableLine, e.Type, e.Object, a.Type, a.Object)
+				} else {
+					t.Logf("Got (%v, %#v)", event.Type, event.Object)
+				}
+				tableLine++
+			}
+			wg.Done()
+		}(i, m.Watch())
+	}
+
+	for i, item := range table {
+		t.Logf("Sending %v", i)
+		m.Action(item.Type, item.Object)
+	}
+
+	m.Shutdown()
+
+	wg.Wait()
+}
+
+func TestBroadcasterWatcherClose(t *testing.T) {
+	m := NewBroadcaster(0, WaitIfChannelFull)
+	w := m.Watch()
+	w2 := m.Watch()
+	w.Stop()
+	m.Shutdown()
+	if _, open := <-w.ResultChan(); open {
+		t.Errorf("Stop didn't work?")
+	}
+	if _, open := <-w2.ResultChan(); open {
+		t.Errorf("Shutdown didn't work?")
+	}
+	// Extra stops don't hurt things
+	w.Stop()
+	w2.Stop()
+}
+
+func TestBroadcasterWatcherStopDeadlock(t *testing.T) {
+	done := make(chan bool)
+	m := NewBroadcaster(0, WaitIfChannelFull)
+	go func(w0, w1 Interface) {
+		// We know Broadcaster is in the distribute loop once one watcher receives
+		// an event. Stop the other watcher while distribute is trying to
+		// send to it.
+		select {
+		case <-w0.ResultChan():
+			w1.Stop()
+		case <-w1.ResultChan():
+			w0.Stop()
+		}
+		close(done)
+	}(m.Watch(), m.Watch())
+	m.Action(Added, &myType{})
+	select {
+	case <-time.After(wait.ForeverTestTimeout):
+		t.Error("timeout: deadlocked")
+	case <-done:
+	}
+	m.Shutdown()
+}
+
+func TestBroadcasterDropIfChannelFull(t *testing.T) {
+	m := NewBroadcaster(1, DropIfChannelFull)
+
+	event1 := Event{Type: Added, Object: &myType{"foo", "hello world 1"}}
+	event2 := Event{Type: Added, Object: &myType{"bar", "hello world 2"}}
+
+	// Add a couple watchers
+	watches := make([]Interface, 2)
+	for i := range watches {
+		watches[i] = m.Watch()
+	}
+
+	// Send a couple events before closing the broadcast channel.
+	t.Log("Sending event 1")
+	m.Action(event1.Type, event1.Object)
+	t.Log("Sending event 2")
+	m.Action(event2.Type, event2.Object)
+	m.Shutdown()
+
+	// Pull events from the queue.
+	wg := sync.WaitGroup{}
+	wg.Add(len(watches))
+	for i := range watches {
+		// Verify that each watcher only gets the first event because its watch
+		// queue of length one was full from the first one.
+		go func(watcher int, w Interface) {
+			defer wg.Done()
+			e1, ok := <-w.ResultChan()
+			if !ok {
+				t.Errorf("Watcher %v failed to retrieve first event.", watcher)
+			}
+			if e, a := event1, e1; !reflect.DeepEqual(e, a) {
+				t.Errorf("Watcher %v: Expected (%v, %#v), got (%v, %#v)",
+					watcher, e.Type, e.Object, a.Type, a.Object)
+			}
+			t.Logf("Got (%v, %#v)", e1.Type, e1.Object)
+			e2, ok := <-w.ResultChan()
+			if ok {
+				t.Errorf("Watcher %v received second event (%v, %#v) even though it shouldn't have.",
+					watcher, e2.Type, e2.Object)
+			}
+		}(i, watches[i])
+	}
+	wg.Wait()
+}

vendor/k8s.io/apimachinery/pkg/watch/streamwatcher.go

@@ -0,0 +1,119 @@
+/*
+Copyright 2014 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 watch
+
+import (
+	"io"
+	"sync"
+
+	"github.com/golang/glog"
+	"k8s.io/apimachinery/pkg/runtime"
+	"k8s.io/apimachinery/pkg/util/net"
+	utilruntime "k8s.io/apimachinery/pkg/util/runtime"
+)
+
+// Decoder allows StreamWatcher to watch any stream for which a Decoder can be written.
+type Decoder interface {
+	// Decode should return the type of event, the decoded object, or an error.
+	// An error will cause StreamWatcher to call Close(). Decode should block until
+	// it has data or an error occurs.
+	Decode() (action EventType, object runtime.Object, err error)
+
+	// Close should close the underlying io.Reader, signalling to the source of
+	// the stream that it is no longer being watched. Close() must cause any
+	// outstanding call to Decode() to return with an error of some sort.
+	Close()
+}
+
+// StreamWatcher turns any stream for which you can write a Decoder interface
+// into a watch.Interface.
+type StreamWatcher struct {
+	sync.Mutex
+	source  Decoder
+	result  chan Event
+	stopped bool
+}
+
+// NewStreamWatcher creates a StreamWatcher from the given decoder.
+func NewStreamWatcher(d Decoder) *StreamWatcher {
+	sw := &StreamWatcher{
+		source: d,
+		// It's easy for a consumer to add buffering via an extra
+		// goroutine/channel, but impossible for them to remove it,
+		// so nonbuffered is better.
+		result: make(chan Event),
+	}
+	go sw.receive()
+	return sw
+}
+
+// ResultChan implements Interface.
+func (sw *StreamWatcher) ResultChan() <-chan Event {
+	return sw.result
+}
+
+// Stop implements Interface.
+func (sw *StreamWatcher) Stop() {
+	// Call Close() exactly once by locking and setting a flag.
+	sw.Lock()
+	defer sw.Unlock()
+	if !sw.stopped {
+		sw.stopped = true
+		sw.source.Close()
+	}
+}
+
+// stopping returns true if Stop() was called previously.
+func (sw *StreamWatcher) stopping() bool {
+	sw.Lock()
+	defer sw.Unlock()
+	return sw.stopped
+}
+
+// receive reads result from the decoder in a loop and sends down the result channel.
+func (sw *StreamWatcher) receive() {
+	defer close(sw.result)
+	defer sw.Stop()
+	defer utilruntime.HandleCrash()
+	for {
+		action, obj, err := sw.source.Decode()
+		if err != nil {
+			// Ignore expected error.
+			if sw.stopping() {
+				return
+			}
+			switch err {
+			case io.EOF:
+				// watch closed normally
+			case io.ErrUnexpectedEOF:
+				glog.V(1).Infof("Unexpected EOF during watch stream event decoding: %v", err)
+			default:
+				msg := "Unable to decode an event from the watch stream: %v"
+				if net.IsProbableEOF(err) {
+					glog.V(5).Infof(msg, err)
+				} else {
+					glog.Errorf(msg, err)
+				}
+			}
+			return
+		}
+		sw.result <- Event{
+			Type:   action,
+			Object: obj,
+		}
+	}
+}

vendor/k8s.io/apimachinery/pkg/watch/streamwatcher_test.go

@@ -0,0 +1,68 @@
+/*
+Copyright 2014 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 watch_test
+
+import (
+	"io"
+	"reflect"
+	"testing"
+
+	"k8s.io/apimachinery/pkg/runtime"
+	. "k8s.io/apimachinery/pkg/watch"
+)
+
+type fakeDecoder struct {
+	items chan Event
+}
+
+func (f fakeDecoder) Decode() (action EventType, object runtime.Object, err error) {
+	item, open := <-f.items
+	if !open {
+		return action, nil, io.EOF
+	}
+	return item.Type, item.Object, nil
+}
+
+func (f fakeDecoder) Close() {
+	close(f.items)
+}
+
+func TestStreamWatcher(t *testing.T) {
+	table := []Event{
+		{Type: Added, Object: testType("foo")},
+	}
+
+	fd := fakeDecoder{make(chan Event, 5)}
+	sw := NewStreamWatcher(fd)
+
+	for _, item := range table {
+		fd.items <- item
+		got, open := <-sw.ResultChan()
+		if !open {
+			t.Errorf("unexpected early close")
+		}
+		if e, a := item, got; !reflect.DeepEqual(e, a) {
+			t.Errorf("expected %v, got %v", e, a)
+		}
+	}
+
+	sw.Stop()
+	_, open := <-sw.ResultChan()
+	if open {
+		t.Errorf("Unexpected failure to close")
+	}
+}

vendor/k8s.io/apimachinery/pkg/watch/until.go

@@ -0,0 +1,87 @@
+/*
+Copyright 2016 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 watch
+
+import (
+	"errors"
+	"time"
+
+	"k8s.io/apimachinery/pkg/util/wait"
+)
+
+// ConditionFunc returns true if the condition has been reached, false if it has not been reached yet,
+// or an error if the condition cannot be checked and should terminate. In general, it is better to define
+// level driven conditions over edge driven conditions (pod has ready=true, vs pod modified and ready changed
+// from false to true).
+type ConditionFunc func(event Event) (bool, error)
+
+// ErrWatchClosed is returned when the watch channel is closed before timeout in Until.
+var ErrWatchClosed = errors.New("watch closed before Until timeout")
+
+// Until reads items from the watch until each provided condition succeeds, and then returns the last watch
+// encountered. The first condition that returns an error terminates the watch (and the event is also returned).
+// If no event has been received, the returned event will be nil.
+// Conditions are satisfied sequentially so as to provide a useful primitive for higher level composition.
+// A zero timeout means to wait forever.
+func Until(timeout time.Duration, watcher Interface, conditions ...ConditionFunc) (*Event, error) {
+	ch := watcher.ResultChan()
+	defer watcher.Stop()
+	var after <-chan time.Time
+	if timeout > 0 {
+		after = time.After(timeout)
+	} else {
+		ch := make(chan time.Time)
+		defer close(ch)
+		after = ch
+	}
+	var lastEvent *Event
+	for _, condition := range conditions {
+		// check the next condition against the previous event and short circuit waiting for the next watch
+		if lastEvent != nil {
+			done, err := condition(*lastEvent)
+			if err != nil {
+				return lastEvent, err
+			}
+			if done {
+				continue
+			}
+		}
+	ConditionSucceeded:
+		for {
+			select {
+			case event, ok := <-ch:
+				if !ok {
+					return lastEvent, ErrWatchClosed
+				}
+				lastEvent = &event
+
+				// TODO: check for watch expired error and retry watch from latest point?
+				done, err := condition(event)
+				if err != nil {
+					return lastEvent, err
+				}
+				if done {
+					break ConditionSucceeded
+				}
+
+			case <-after:
+				return lastEvent, wait.ErrWaitTimeout
+			}
+		}
+	}
+	return lastEvent, nil
+}

vendor/k8s.io/apimachinery/pkg/watch/until_test.go

@@ -0,0 +1,172 @@
+/*
+Copyright 2016 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 watch
+
+import (
+	"errors"
+	"strings"
+	"testing"
+	"time"
+
+	"k8s.io/apimachinery/pkg/runtime"
+	"k8s.io/apimachinery/pkg/runtime/schema"
+	"k8s.io/apimachinery/pkg/util/wait"
+)
+
+type fakePod struct {
+	name string
+}
+
+func (obj *fakePod) GetObjectKind() schema.ObjectKind { return schema.EmptyObjectKind }
+func (obj *fakePod) DeepCopyObject() runtime.Object   { panic("DeepCopyObject not supported by fakePod") }
+
+func TestUntil(t *testing.T) {
+	fw := NewFake()
+	go func() {
+		var obj *fakePod
+		fw.Add(obj)
+		fw.Modify(obj)
+	}()
+	conditions := []ConditionFunc{
+		func(event Event) (bool, error) { return event.Type == Added, nil },
+		func(event Event) (bool, error) { return event.Type == Modified, nil },
+	}
+
+	timeout := time.Minute
+	lastEvent, err := Until(timeout, fw, conditions...)
+	if err != nil {
+		t.Fatalf("expected nil error, got %#v", err)
+	}
+	if lastEvent == nil {
+		t.Fatal("expected an event")
+	}
+	if lastEvent.Type != Modified {
+		t.Fatalf("expected MODIFIED event type, got %v", lastEvent.Type)
+	}
+	if got, isPod := lastEvent.Object.(*fakePod); !isPod {
+		t.Fatalf("expected a pod event, got %#v", got)
+	}
+}
+
+func TestUntilMultipleConditions(t *testing.T) {
+	fw := NewFake()
+	go func() {
+		var obj *fakePod
+		fw.Add(obj)
+	}()
+	conditions := []ConditionFunc{
+		func(event Event) (bool, error) { return event.Type == Added, nil },
+		func(event Event) (bool, error) { return event.Type == Added, nil },
+	}
+
+	timeout := time.Minute
+	lastEvent, err := Until(timeout, fw, conditions...)
+	if err != nil {
+		t.Fatalf("expected nil error, got %#v", err)
+	}
+	if lastEvent == nil {
+		t.Fatal("expected an event")
+	}
+	if lastEvent.Type != Added {
+		t.Fatalf("expected MODIFIED event type, got %v", lastEvent.Type)
+	}
+	if got, isPod := lastEvent.Object.(*fakePod); !isPod {
+		t.Fatalf("expected a pod event, got %#v", got)
+	}
+}
+
+func TestUntilMultipleConditionsFail(t *testing.T) {
+	fw := NewFake()
+	go func() {
+		var obj *fakePod
+		fw.Add(obj)
+	}()
+	conditions := []ConditionFunc{
+		func(event Event) (bool, error) { return event.Type == Added, nil },
+		func(event Event) (bool, error) { return event.Type == Added, nil },
+		func(event Event) (bool, error) { return event.Type == Deleted, nil },
+	}
+
+	timeout := 10 * time.Second
+	lastEvent, err := Until(timeout, fw, conditions...)
+	if err != wait.ErrWaitTimeout {
+		t.Fatalf("expected ErrWaitTimeout error, got %#v", err)
+	}
+	if lastEvent == nil {
+		t.Fatal("expected an event")
+	}
+	if lastEvent.Type != Added {
+		t.Fatalf("expected ADDED event type, got %v", lastEvent.Type)
+	}
+	if got, isPod := lastEvent.Object.(*fakePod); !isPod {
+		t.Fatalf("expected a pod event, got %#v", got)
+	}
+}
+
+func TestUntilTimeout(t *testing.T) {
+	fw := NewFake()
+	go func() {
+		var obj *fakePod
+		fw.Add(obj)
+		fw.Modify(obj)
+	}()
+	conditions := []ConditionFunc{
+		func(event Event) (bool, error) {
+			return event.Type == Added, nil
+		},
+		func(event Event) (bool, error) {
+			return event.Type == Modified, nil
+		},
+	}
+
+	timeout := time.Duration(0)
+	lastEvent, err := Until(timeout, fw, conditions...)
+	if err != nil {
+		t.Fatalf("expected nil error, got %#v", err)
+	}
+	if lastEvent == nil {
+		t.Fatal("expected an event")
+	}
+	if lastEvent.Type != Modified {
+		t.Fatalf("expected MODIFIED event type, got %v", lastEvent.Type)
+	}
+	if got, isPod := lastEvent.Object.(*fakePod); !isPod {
+		t.Fatalf("expected a pod event, got %#v", got)
+	}
+}
+
+func TestUntilErrorCondition(t *testing.T) {
+	fw := NewFake()
+	go func() {
+		var obj *fakePod
+		fw.Add(obj)
+	}()
+	expected := "something bad"
+	conditions := []ConditionFunc{
+		func(event Event) (bool, error) { return event.Type == Added, nil },
+		func(event Event) (bool, error) { return false, errors.New(expected) },
+	}
+
+	timeout := time.Minute
+	_, err := Until(timeout, fw, conditions...)
+	if err == nil {
+		t.Fatal("expected an error")
+	}
+	if !strings.Contains(err.Error(), expected) {
+		t.Fatalf("expected %q in error string, got %q", expected, err.Error())
+	}
+}

vendor/k8s.io/apimachinery/pkg/watch/watch.go

@@ -0,0 +1,270 @@
+/*
+Copyright 2014 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 watch
+
+import (
+	"fmt"
+	"sync"
+
+	"github.com/golang/glog"
+
+	"k8s.io/apimachinery/pkg/runtime"
+)
+
+// Interface can be implemented by anything that knows how to watch and report changes.
+type Interface interface {
+	// Stops watching. Will close the channel returned by ResultChan(). Releases
+	// any resources used by the watch.
+	Stop()
+
+	// Returns a chan which will receive all the events. If an error occurs
+	// or Stop() is called, this channel will be closed, in which case the
+	// watch should be completely cleaned up.
+	ResultChan() <-chan Event
+}
+
+// EventType defines the possible types of events.
+type EventType string
+
+const (
+	Added    EventType = "ADDED"
+	Modified EventType = "MODIFIED"
+	Deleted  EventType = "DELETED"
+	Error    EventType = "ERROR"
+
+	DefaultChanSize int32 = 100
+)
+
+// Event represents a single event to a watched resource.
+// +k8s:deepcopy-gen=true
+type Event struct {
+	Type EventType
+
+	// Object is:
+	//  * If Type is Added or Modified: the new state of the object.
+	//  * If Type is Deleted: the state of the object immediately before deletion.
+	//  * If Type is Error: *api.Status is recommended; other types may make sense
+	//    depending on context.
+	Object runtime.Object
+}
+
+type emptyWatch chan Event
+
+// NewEmptyWatch returns a watch interface that returns no results and is closed.
+// May be used in certain error conditions where no information is available but
+// an error is not warranted.
+func NewEmptyWatch() Interface {
+	ch := make(chan Event)
+	close(ch)
+	return emptyWatch(ch)
+}
+
+// Stop implements Interface
+func (w emptyWatch) Stop() {
+}
+
+// ResultChan implements Interface
+func (w emptyWatch) ResultChan() <-chan Event {
+	return chan Event(w)
+}
+
+// FakeWatcher lets you test anything that consumes a watch.Interface; threadsafe.
+type FakeWatcher struct {
+	result  chan Event
+	Stopped bool
+	sync.Mutex
+}
+
+func NewFake() *FakeWatcher {
+	return &FakeWatcher{
+		result: make(chan Event),
+	}
+}
+
+func NewFakeWithChanSize(size int, blocking bool) *FakeWatcher {
+	return &FakeWatcher{
+		result: make(chan Event, size),
+	}
+}
+
+// Stop implements Interface.Stop().
+func (f *FakeWatcher) Stop() {
+	f.Lock()
+	defer f.Unlock()
+	if !f.Stopped {
+		glog.V(4).Infof("Stopping fake watcher.")
+		close(f.result)
+		f.Stopped = true
+	}
+}
+
+func (f *FakeWatcher) IsStopped() bool {
+	f.Lock()
+	defer f.Unlock()
+	return f.Stopped
+}
+
+// Reset prepares the watcher to be reused.
+func (f *FakeWatcher) Reset() {
+	f.Lock()
+	defer f.Unlock()
+	f.Stopped = false
+	f.result = make(chan Event)
+}
+
+func (f *FakeWatcher) ResultChan() <-chan Event {
+	return f.result
+}
+
+// Add sends an add event.
+func (f *FakeWatcher) Add(obj runtime.Object) {
+	f.result <- Event{Added, obj}
+}
+
+// Modify sends a modify event.
+func (f *FakeWatcher) Modify(obj runtime.Object) {
+	f.result <- Event{Modified, obj}
+}
+
+// Delete sends a delete event.
+func (f *FakeWatcher) Delete(lastValue runtime.Object) {
+	f.result <- Event{Deleted, lastValue}
+}
+
+// Error sends an Error event.
+func (f *FakeWatcher) Error(errValue runtime.Object) {
+	f.result <- Event{Error, errValue}
+}
+
+// Action sends an event of the requested type, for table-based testing.
+func (f *FakeWatcher) Action(action EventType, obj runtime.Object) {
+	f.result <- Event{action, obj}
+}
+
+// RaceFreeFakeWatcher lets you test anything that consumes a watch.Interface; threadsafe.
+type RaceFreeFakeWatcher struct {
+	result  chan Event
+	Stopped bool
+	sync.Mutex
+}
+
+func NewRaceFreeFake() *RaceFreeFakeWatcher {
+	return &RaceFreeFakeWatcher{
+		result: make(chan Event, DefaultChanSize),
+	}
+}
+
+// Stop implements Interface.Stop().
+func (f *RaceFreeFakeWatcher) Stop() {
+	f.Lock()
+	defer f.Unlock()
+	if !f.Stopped {
+		glog.V(4).Infof("Stopping fake watcher.")
+		close(f.result)
+		f.Stopped = true
+	}
+}
+
+func (f *RaceFreeFakeWatcher) IsStopped() bool {
+	f.Lock()
+	defer f.Unlock()
+	return f.Stopped
+}
+
+// Reset prepares the watcher to be reused.
+func (f *RaceFreeFakeWatcher) Reset() {
+	f.Lock()
+	defer f.Unlock()
+	f.Stopped = false
+	f.result = make(chan Event, DefaultChanSize)
+}
+
+func (f *RaceFreeFakeWatcher) ResultChan() <-chan Event {
+	f.Lock()
+	defer f.Unlock()
+	return f.result
+}
+
+// Add sends an add event.
+func (f *RaceFreeFakeWatcher) Add(obj runtime.Object) {
+	f.Lock()
+	defer f.Unlock()
+	if !f.Stopped {
+		select {
+		case f.result <- Event{Added, obj}:
+			return
+		default:
+			panic(fmt.Errorf("channel full"))
+		}
+	}
+}
+
+// Modify sends a modify event.
+func (f *RaceFreeFakeWatcher) Modify(obj runtime.Object) {
+	f.Lock()
+	defer f.Unlock()
+	if !f.Stopped {
+		select {
+		case f.result <- Event{Modified, obj}:
+			return
+		default:
+			panic(fmt.Errorf("channel full"))
+		}
+	}
+}
+
+// Delete sends a delete event.
+func (f *RaceFreeFakeWatcher) Delete(lastValue runtime.Object) {
+	f.Lock()
+	defer f.Unlock()
+	if !f.Stopped {
+		select {
+		case f.result <- Event{Deleted, lastValue}:
+			return
+		default:
+			panic(fmt.Errorf("channel full"))
+		}
+	}
+}
+
+// Error sends an Error event.
+func (f *RaceFreeFakeWatcher) Error(errValue runtime.Object) {
+	f.Lock()
+	defer f.Unlock()
+	if !f.Stopped {
+		select {
+		case f.result <- Event{Error, errValue}:
+			return
+		default:
+			panic(fmt.Errorf("channel full"))
+		}
+	}
+}
+
+// Action sends an event of the requested type, for table-based testing.
+func (f *RaceFreeFakeWatcher) Action(action EventType, obj runtime.Object) {
+	f.Lock()
+	defer f.Unlock()
+	if !f.Stopped {
+		select {
+		case f.result <- Event{action, obj}:
+			return
+		default:
+			panic(fmt.Errorf("channel full"))
+		}
+	}
+}

vendor/k8s.io/apimachinery/pkg/watch/watch_test.go

@@ -0,0 +1,137 @@
+/*
+Copyright 2014 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 watch_test
+
+import (
+	"testing"
+
+	"k8s.io/apimachinery/pkg/runtime"
+	"k8s.io/apimachinery/pkg/runtime/schema"
+	. "k8s.io/apimachinery/pkg/watch"
+)
+
+type testType string
+
+func (obj testType) GetObjectKind() schema.ObjectKind { return schema.EmptyObjectKind }
+func (obj testType) DeepCopyObject() runtime.Object   { return obj }
+
+func TestFake(t *testing.T) {
+	f := NewFake()
+
+	table := []struct {
+		t EventType
+		s testType
+	}{
+		{Added, testType("foo")},
+		{Modified, testType("qux")},
+		{Modified, testType("bar")},
+		{Deleted, testType("bar")},
+		{Error, testType("error: blah")},
+	}
+
+	// Prove that f implements Interface by phrasing this as a function.
+	consumer := func(w Interface) {
+		for _, expect := range table {
+			got, ok := <-w.ResultChan()
+			if !ok {
+				t.Fatalf("closed early")
+			}
+			if e, a := expect.t, got.Type; e != a {
+				t.Fatalf("Expected %v, got %v", e, a)
+			}
+			if a, ok := got.Object.(testType); !ok || a != expect.s {
+				t.Fatalf("Expected %v, got %v", expect.s, a)
+			}
+		}
+		_, stillOpen := <-w.ResultChan()
+		if stillOpen {
+			t.Fatal("Never stopped")
+		}
+	}
+
+	sender := func() {
+		f.Add(testType("foo"))
+		f.Action(Modified, testType("qux"))
+		f.Modify(testType("bar"))
+		f.Delete(testType("bar"))
+		f.Error(testType("error: blah"))
+		f.Stop()
+	}
+
+	go sender()
+	consumer(f)
+}
+
+func TestRaceFreeFake(t *testing.T) {
+	f := NewRaceFreeFake()
+
+	table := []struct {
+		t EventType
+		s testType
+	}{
+		{Added, testType("foo")},
+		{Modified, testType("qux")},
+		{Modified, testType("bar")},
+		{Deleted, testType("bar")},
+		{Error, testType("error: blah")},
+	}
+
+	// Prove that f implements Interface by phrasing this as a function.
+	consumer := func(w Interface) {
+		for _, expect := range table {
+			got, ok := <-w.ResultChan()
+			if !ok {
+				t.Fatalf("closed early")
+			}
+			if e, a := expect.t, got.Type; e != a {
+				t.Fatalf("Expected %v, got %v", e, a)
+			}
+			if a, ok := got.Object.(testType); !ok || a != expect.s {
+				t.Fatalf("Expected %v, got %v", expect.s, a)
+			}
+		}
+		_, stillOpen := <-w.ResultChan()
+		if stillOpen {
+			t.Fatal("Never stopped")
+		}
+	}
+
+	sender := func() {
+		f.Add(testType("foo"))
+		f.Action(Modified, testType("qux"))
+		f.Modify(testType("bar"))
+		f.Delete(testType("bar"))
+		f.Error(testType("error: blah"))
+		f.Stop()
+	}
+
+	go sender()
+	consumer(f)
+}
+
+func TestEmpty(t *testing.T) {
+	w := NewEmptyWatch()
+	_, ok := <-w.ResultChan()
+	if ok {
+		t.Errorf("unexpected result channel result")
+	}
+	w.Stop()
+	_, ok = <-w.ResultChan()
+	if ok {
+		t.Errorf("unexpected result channel result")
+	}
+}

vendor/k8s.io/apimachinery/pkg/watch/zz_generated.deepcopy.go

@@ -0,0 +1,42 @@
+// +build !ignore_autogenerated
+
+/*
+Copyright 2017 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.
+*/
+
+// This file was autogenerated by deepcopy-gen. Do not edit it manually!
+
+package watch
+
+// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
+func (in *Event) DeepCopyInto(out *Event) {
+	*out = *in
+	if in.Object == nil {
+		out.Object = nil
+	} else {
+		out.Object = in.Object.DeepCopyObject()
+	}
+	return
+}
+
+// DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new Event.
+func (in *Event) DeepCopy() *Event {
+	if in == nil {
+		return nil
+	}
+	out := new(Event)
+	in.DeepCopyInto(out)
+	return out
+}