Add glide.yaml and vendor deps

vendor/k8s.io/kubernetes/pkg/controller/garbagecollector/BUILD

@@ -0,0 +1,72 @@
+package(default_visibility = ["//visibility:public"])
+
+licenses(["notice"])
+
+load(
+    "@io_bazel_rules_go//go:def.bzl",
+    "go_binary",
+    "go_library",
+    "go_test",
+    "cgo_library",
+)
+
+go_library(
+    name = "go_default_library",
+    srcs = [
+        "garbagecollector.go",
+        "metrics.go",
+        "rate_limiter_helper.go",
+        "uid_cache.go",
+    ],
+    tags = ["automanaged"],
+    deps = [
+        "//pkg/api:go_default_library",
+        "//pkg/api/errors:go_default_library",
+        "//pkg/api/meta:go_default_library",
+        "//pkg/api/meta/metatypes:go_default_library",
+        "//pkg/api/v1:go_default_library",
+        "//pkg/apis/meta/v1:go_default_library",
+        "//pkg/client/cache:go_default_library",
+        "//pkg/client/typed/dynamic:go_default_library",
+        "//pkg/controller/garbagecollector/metaonly:go_default_library",
+        "//pkg/runtime:go_default_library",
+        "//pkg/runtime/schema:go_default_library",
+        "//pkg/types:go_default_library",
+        "//pkg/util/clock:go_default_library",
+        "//pkg/util/errors:go_default_library",
+        "//pkg/util/metrics:go_default_library",
+        "//pkg/util/runtime:go_default_library",
+        "//pkg/util/sets:go_default_library",
+        "//pkg/util/wait:go_default_library",
+        "//pkg/util/workqueue:go_default_library",
+        "//pkg/watch:go_default_library",
+        "//vendor:github.com/golang/glog",
+        "//vendor:github.com/golang/groupcache/lru",
+        "//vendor:github.com/prometheus/client_golang/prometheus",
+    ],
+)
+
+go_test(
+    name = "go_default_test",
+    srcs = ["garbagecollector_test.go"],
+    library = "go_default_library",
+    tags = ["automanaged"],
+    deps = [
+        "//pkg/api/install:go_default_library",
+        "//pkg/api/meta/metatypes:go_default_library",
+        "//pkg/api/v1:go_default_library",
+        "//pkg/apimachinery/registered:go_default_library",
+        "//pkg/apis/meta/v1:go_default_library",
+        "//pkg/client/restclient:go_default_library",
+        "//pkg/client/typed/dynamic:go_default_library",
+        "//pkg/controller/garbagecollector/metaonly:go_default_library",
+        "//pkg/runtime/schema:go_default_library",
+        "//pkg/runtime/serializer:go_default_library",
+        "//pkg/types:go_default_library",
+        "//pkg/util/clock:go_default_library",
+        "//pkg/util/json:go_default_library",
+        "//pkg/util/sets:go_default_library",
+        "//pkg/util/workqueue:go_default_library",
+        "//vendor:github.com/stretchr/testify/assert",
+    ],
+)

vendor/k8s.io/kubernetes/pkg/controller/garbagecollector/garbagecollector_test.go

@@ -0,0 +1,477 @@
+/*
+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 garbagecollector
+
+import (
+	"net/http"
+	"net/http/httptest"
+	"strings"
+	"sync"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+
+	_ "k8s.io/kubernetes/pkg/api/install"
+
+	"k8s.io/kubernetes/pkg/api/meta/metatypes"
+	"k8s.io/kubernetes/pkg/api/v1"
+	"k8s.io/kubernetes/pkg/apimachinery/registered"
+	metav1 "k8s.io/kubernetes/pkg/apis/meta/v1"
+	"k8s.io/kubernetes/pkg/client/restclient"
+	"k8s.io/kubernetes/pkg/client/typed/dynamic"
+	"k8s.io/kubernetes/pkg/controller/garbagecollector/metaonly"
+	"k8s.io/kubernetes/pkg/runtime/schema"
+	"k8s.io/kubernetes/pkg/runtime/serializer"
+	"k8s.io/kubernetes/pkg/types"
+	"k8s.io/kubernetes/pkg/util/clock"
+	"k8s.io/kubernetes/pkg/util/json"
+	"k8s.io/kubernetes/pkg/util/sets"
+	"k8s.io/kubernetes/pkg/util/workqueue"
+)
+
+func TestNewGarbageCollector(t *testing.T) {
+	config := &restclient.Config{}
+	config.ContentConfig.NegotiatedSerializer = serializer.DirectCodecFactory{CodecFactory: metaonly.NewMetadataCodecFactory()}
+	metaOnlyClientPool := dynamic.NewClientPool(config, registered.RESTMapper(), dynamic.LegacyAPIPathResolverFunc)
+	config.ContentConfig.NegotiatedSerializer = nil
+	clientPool := dynamic.NewClientPool(config, registered.RESTMapper(), dynamic.LegacyAPIPathResolverFunc)
+	podResource := []schema.GroupVersionResource{{Version: "v1", Resource: "pods"}}
+	gc, err := NewGarbageCollector(metaOnlyClientPool, clientPool, registered.RESTMapper(), podResource)
+	if err != nil {
+		t.Fatal(err)
+	}
+	assert.Equal(t, 1, len(gc.monitors))
+}
+
+// fakeAction records information about requests to aid in testing.
+type fakeAction struct {
+	method string
+	path   string
+	query  string
+}
+
+// String returns method=path to aid in testing
+func (f *fakeAction) String() string {
+	return strings.Join([]string{f.method, f.path}, "=")
+}
+
+type FakeResponse struct {
+	statusCode int
+	content    []byte
+}
+
+// fakeActionHandler holds a list of fakeActions received
+type fakeActionHandler struct {
+	// statusCode and content returned by this handler for different method + path.
+	response map[string]FakeResponse
+
+	lock    sync.Mutex
+	actions []fakeAction
+}
+
+// ServeHTTP logs the action that occurred and always returns the associated status code
+func (f *fakeActionHandler) ServeHTTP(response http.ResponseWriter, request *http.Request) {
+	f.lock.Lock()
+	defer f.lock.Unlock()
+
+	f.actions = append(f.actions, fakeAction{method: request.Method, path: request.URL.Path, query: request.URL.RawQuery})
+	fakeResponse, ok := f.response[request.Method+request.URL.Path]
+	if !ok {
+		fakeResponse.statusCode = 200
+		fakeResponse.content = []byte("{\"kind\": \"List\"}")
+	}
+	response.Header().Set("Content-Type", "application/json")
+	response.WriteHeader(fakeResponse.statusCode)
+	response.Write(fakeResponse.content)
+}
+
+// testServerAndClientConfig returns a server that listens and a config that can reference it
+func testServerAndClientConfig(handler func(http.ResponseWriter, *http.Request)) (*httptest.Server, *restclient.Config) {
+	srv := httptest.NewServer(http.HandlerFunc(handler))
+	config := &restclient.Config{
+		Host: srv.URL,
+	}
+	return srv, config
+}
+
+func setupGC(t *testing.T, config *restclient.Config) *GarbageCollector {
+	config.ContentConfig.NegotiatedSerializer = serializer.DirectCodecFactory{CodecFactory: metaonly.NewMetadataCodecFactory()}
+	metaOnlyClientPool := dynamic.NewClientPool(config, registered.RESTMapper(), dynamic.LegacyAPIPathResolverFunc)
+	config.ContentConfig.NegotiatedSerializer = nil
+	clientPool := dynamic.NewClientPool(config, registered.RESTMapper(), dynamic.LegacyAPIPathResolverFunc)
+	podResource := []schema.GroupVersionResource{{Version: "v1", Resource: "pods"}}
+	gc, err := NewGarbageCollector(metaOnlyClientPool, clientPool, registered.RESTMapper(), podResource)
+	if err != nil {
+		t.Fatal(err)
+	}
+	return gc
+}
+
+func getPod(podName string, ownerReferences []v1.OwnerReference) *v1.Pod {
+	return &v1.Pod{
+		TypeMeta: metav1.TypeMeta{
+			Kind:       "Pod",
+			APIVersion: "v1",
+		},
+		ObjectMeta: v1.ObjectMeta{
+			Name:            podName,
+			Namespace:       "ns1",
+			OwnerReferences: ownerReferences,
+		},
+	}
+}
+
+func serilizeOrDie(t *testing.T, object interface{}) []byte {
+	data, err := json.Marshal(object)
+	if err != nil {
+		t.Fatal(err)
+	}
+	return data
+}
+
+// test the processItem function making the expected actions.
+func TestProcessItem(t *testing.T) {
+	pod := getPod("ToBeDeletedPod", []v1.OwnerReference{
+		{
+			Kind:       "ReplicationController",
+			Name:       "owner1",
+			UID:        "123",
+			APIVersion: "v1",
+		},
+	})
+	testHandler := &fakeActionHandler{
+		response: map[string]FakeResponse{
+			"GET" + "/api/v1/namespaces/ns1/replicationcontrollers/owner1": {
+				404,
+				[]byte{},
+			},
+			"GET" + "/api/v1/namespaces/ns1/pods/ToBeDeletedPod": {
+				200,
+				serilizeOrDie(t, pod),
+			},
+		},
+	}
+	srv, clientConfig := testServerAndClientConfig(testHandler.ServeHTTP)
+	defer srv.Close()
+	gc := setupGC(t, clientConfig)
+	item := &node{
+		identity: objectReference{
+			OwnerReference: metatypes.OwnerReference{
+				Kind:       pod.Kind,
+				APIVersion: pod.APIVersion,
+				Name:       pod.Name,
+				UID:        pod.UID,
+			},
+			Namespace: pod.Namespace,
+		},
+		// owners are intentionally left empty. The processItem routine should get the latest item from the server.
+		owners: nil,
+	}
+	err := gc.processItem(item)
+	if err != nil {
+		t.Errorf("Unexpected Error: %v", err)
+	}
+	expectedActionSet := sets.NewString()
+	expectedActionSet.Insert("GET=/api/v1/namespaces/ns1/replicationcontrollers/owner1")
+	expectedActionSet.Insert("DELETE=/api/v1/namespaces/ns1/pods/ToBeDeletedPod")
+	expectedActionSet.Insert("GET=/api/v1/namespaces/ns1/pods/ToBeDeletedPod")
+
+	actualActionSet := sets.NewString()
+	for _, action := range testHandler.actions {
+		actualActionSet.Insert(action.String())
+	}
+	if !expectedActionSet.Equal(actualActionSet) {
+		t.Errorf("expected actions:\n%v\n but got:\n%v\nDifference:\n%v", expectedActionSet,
+			actualActionSet, expectedActionSet.Difference(actualActionSet))
+	}
+}
+
+// verifyGraphInvariants verifies that all of a node's owners list the node as a
+// dependent and vice versa. uidToNode has all the nodes in the graph.
+func verifyGraphInvariants(scenario string, uidToNode map[types.UID]*node, t *testing.T) {
+	for myUID, node := range uidToNode {
+		for dependentNode := range node.dependents {
+			found := false
+			for _, owner := range dependentNode.owners {
+				if owner.UID == myUID {
+					found = true
+					break
+				}
+			}
+			if !found {
+				t.Errorf("scenario: %s: node %s has node %s as a dependent, but it's not present in the latter node's owners list", scenario, node.identity, dependentNode.identity)
+			}
+		}
+
+		for _, owner := range node.owners {
+			ownerNode, ok := uidToNode[owner.UID]
+			if !ok {
+				// It's possible that the owner node doesn't exist
+				continue
+			}
+			if _, ok := ownerNode.dependents[node]; !ok {
+				t.Errorf("node %s has node %s as an owner, but it's not present in the latter node's dependents list", node.identity, ownerNode.identity)
+			}
+		}
+	}
+}
+
+func createEvent(eventType eventType, selfUID string, owners []string) event {
+	var ownerReferences []v1.OwnerReference
+	for i := 0; i < len(owners); i++ {
+		ownerReferences = append(ownerReferences, v1.OwnerReference{UID: types.UID(owners[i])})
+	}
+	return event{
+		eventType: eventType,
+		obj: &v1.Pod{
+			ObjectMeta: v1.ObjectMeta{
+				UID:             types.UID(selfUID),
+				OwnerReferences: ownerReferences,
+			},
+		},
+	}
+}
+
+func TestProcessEvent(t *testing.T) {
+	var testScenarios = []struct {
+		name string
+		// a series of events that will be supplied to the
+		// Propagator.eventQueue.
+		events []event
+	}{
+		{
+			name: "test1",
+			events: []event{
+				createEvent(addEvent, "1", []string{}),
+				createEvent(addEvent, "2", []string{"1"}),
+				createEvent(addEvent, "3", []string{"1", "2"}),
+			},
+		},
+		{
+			name: "test2",
+			events: []event{
+				createEvent(addEvent, "1", []string{}),
+				createEvent(addEvent, "2", []string{"1"}),
+				createEvent(addEvent, "3", []string{"1", "2"}),
+				createEvent(addEvent, "4", []string{"2"}),
+				createEvent(deleteEvent, "2", []string{"doesn't matter"}),
+			},
+		},
+		{
+			name: "test3",
+			events: []event{
+				createEvent(addEvent, "1", []string{}),
+				createEvent(addEvent, "2", []string{"1"}),
+				createEvent(addEvent, "3", []string{"1", "2"}),
+				createEvent(addEvent, "4", []string{"3"}),
+				createEvent(updateEvent, "2", []string{"4"}),
+			},
+		},
+		{
+			name: "reverse test2",
+			events: []event{
+				createEvent(addEvent, "4", []string{"2"}),
+				createEvent(addEvent, "3", []string{"1", "2"}),
+				createEvent(addEvent, "2", []string{"1"}),
+				createEvent(addEvent, "1", []string{}),
+				createEvent(deleteEvent, "2", []string{"doesn't matter"}),
+			},
+		},
+	}
+
+	for _, scenario := range testScenarios {
+		propagator := &Propagator{
+			eventQueue: workqueue.NewTimedWorkQueue(),
+			uidToNode: &concurrentUIDToNode{
+				RWMutex:   &sync.RWMutex{},
+				uidToNode: make(map[types.UID]*node),
+			},
+			gc: &GarbageCollector{
+				dirtyQueue:       workqueue.NewTimedWorkQueue(),
+				clock:            clock.RealClock{},
+				absentOwnerCache: NewUIDCache(2),
+			},
+		}
+		for i := 0; i < len(scenario.events); i++ {
+			propagator.eventQueue.Add(&workqueue.TimedWorkQueueItem{StartTime: propagator.gc.clock.Now(), Object: &scenario.events[i]})
+			propagator.processEvent()
+			verifyGraphInvariants(scenario.name, propagator.uidToNode.uidToNode, t)
+		}
+	}
+}
+
+// TestDependentsRace relies on golang's data race detector to check if there is
+// data race among in the dependents field.
+func TestDependentsRace(t *testing.T) {
+	gc := setupGC(t, &restclient.Config{})
+
+	const updates = 100
+	owner := &node{dependents: make(map[*node]struct{})}
+	ownerUID := types.UID("owner")
+	gc.propagator.uidToNode.Write(owner)
+	go func() {
+		for i := 0; i < updates; i++ {
+			dependent := &node{}
+			gc.propagator.addDependentToOwners(dependent, []metatypes.OwnerReference{{UID: ownerUID}})
+			gc.propagator.removeDependentFromOwners(dependent, []metatypes.OwnerReference{{UID: ownerUID}})
+		}
+	}()
+	go func() {
+		gc.orphanQueue.Add(&workqueue.TimedWorkQueueItem{StartTime: gc.clock.Now(), Object: owner})
+		for i := 0; i < updates; i++ {
+			gc.orphanFinalizer()
+		}
+	}()
+}
+
+// test the list and watch functions correctly converts the ListOptions
+func TestGCListWatcher(t *testing.T) {
+	testHandler := &fakeActionHandler{}
+	srv, clientConfig := testServerAndClientConfig(testHandler.ServeHTTP)
+	defer srv.Close()
+	clientPool := dynamic.NewClientPool(clientConfig, registered.RESTMapper(), dynamic.LegacyAPIPathResolverFunc)
+	podResource := schema.GroupVersionResource{Version: "v1", Resource: "pods"}
+	client, err := clientPool.ClientForGroupVersionResource(podResource)
+	if err != nil {
+		t.Fatal(err)
+	}
+	lw := gcListWatcher(client, podResource)
+	lw.Watch(v1.ListOptions{ResourceVersion: "1"})
+	lw.List(v1.ListOptions{ResourceVersion: "1"})
+	if e, a := 2, len(testHandler.actions); e != a {
+		t.Errorf("expect %d requests, got %d", e, a)
+	}
+	if e, a := "resourceVersion=1", testHandler.actions[0].query; e != a {
+		t.Errorf("expect %s, got %s", e, a)
+	}
+	if e, a := "resourceVersion=1", testHandler.actions[1].query; e != a {
+		t.Errorf("expect %s, got %s", e, a)
+	}
+}
+
+func podToGCNode(pod *v1.Pod) *node {
+	return &node{
+		identity: objectReference{
+			OwnerReference: metatypes.OwnerReference{
+				Kind:       pod.Kind,
+				APIVersion: pod.APIVersion,
+				Name:       pod.Name,
+				UID:        pod.UID,
+			},
+			Namespace: pod.Namespace,
+		},
+		// owners are intentionally left empty. The processItem routine should get the latest item from the server.
+		owners: nil,
+	}
+}
+
+func TestAbsentUIDCache(t *testing.T) {
+	rc1Pod1 := getPod("rc1Pod1", []v1.OwnerReference{
+		{
+			Kind:       "ReplicationController",
+			Name:       "rc1",
+			UID:        "1",
+			APIVersion: "v1",
+		},
+	})
+	rc1Pod2 := getPod("rc1Pod2", []v1.OwnerReference{
+		{
+			Kind:       "ReplicationController",
+			Name:       "rc1",
+			UID:        "1",
+			APIVersion: "v1",
+		},
+	})
+	rc2Pod1 := getPod("rc2Pod1", []v1.OwnerReference{
+		{
+			Kind:       "ReplicationController",
+			Name:       "rc2",
+			UID:        "2",
+			APIVersion: "v1",
+		},
+	})
+	rc3Pod1 := getPod("rc3Pod1", []v1.OwnerReference{
+		{
+			Kind:       "ReplicationController",
+			Name:       "rc3",
+			UID:        "3",
+			APIVersion: "v1",
+		},
+	})
+	testHandler := &fakeActionHandler{
+		response: map[string]FakeResponse{
+			"GET" + "/api/v1/namespaces/ns1/pods/rc1Pod1": {
+				200,
+				serilizeOrDie(t, rc1Pod1),
+			},
+			"GET" + "/api/v1/namespaces/ns1/pods/rc1Pod2": {
+				200,
+				serilizeOrDie(t, rc1Pod2),
+			},
+			"GET" + "/api/v1/namespaces/ns1/pods/rc2Pod1": {
+				200,
+				serilizeOrDie(t, rc2Pod1),
+			},
+			"GET" + "/api/v1/namespaces/ns1/pods/rc3Pod1": {
+				200,
+				serilizeOrDie(t, rc3Pod1),
+			},
+			"GET" + "/api/v1/namespaces/ns1/replicationcontrollers/rc1": {
+				404,
+				[]byte{},
+			},
+			"GET" + "/api/v1/namespaces/ns1/replicationcontrollers/rc2": {
+				404,
+				[]byte{},
+			},
+			"GET" + "/api/v1/namespaces/ns1/replicationcontrollers/rc3": {
+				404,
+				[]byte{},
+			},
+		},
+	}
+	srv, clientConfig := testServerAndClientConfig(testHandler.ServeHTTP)
+	defer srv.Close()
+	gc := setupGC(t, clientConfig)
+	gc.absentOwnerCache = NewUIDCache(2)
+	gc.processItem(podToGCNode(rc1Pod1))
+	gc.processItem(podToGCNode(rc2Pod1))
+	// rc1 should already be in the cache, no request should be sent. rc1 should be promoted in the UIDCache
+	gc.processItem(podToGCNode(rc1Pod2))
+	// after this call, rc2 should be evicted from the UIDCache
+	gc.processItem(podToGCNode(rc3Pod1))
+	// check cache
+	if !gc.absentOwnerCache.Has(types.UID("1")) {
+		t.Errorf("expected rc1 to be in the cache")
+	}
+	if gc.absentOwnerCache.Has(types.UID("2")) {
+		t.Errorf("expected rc2 to not exist in the cache")
+	}
+	if !gc.absentOwnerCache.Has(types.UID("3")) {
+		t.Errorf("expected rc3 to be in the cache")
+	}
+	// check the request sent to the server
+	count := 0
+	for _, action := range testHandler.actions {
+		if action.String() == "GET=/api/v1/namespaces/ns1/replicationcontrollers/rc1" {
+			count++
+		}
+	}
+	if count != 1 {
+		t.Errorf("expected only 1 GET rc1 request, got %d", count)
+	}
+}

vendor/k8s.io/kubernetes/pkg/controller/garbagecollector/metaonly/BUILD

@@ -0,0 +1,47 @@
+package(default_visibility = ["//visibility:public"])
+
+licenses(["notice"])
+
+load(
+    "@io_bazel_rules_go//go:def.bzl",
+    "go_binary",
+    "go_library",
+    "go_test",
+    "cgo_library",
+)
+
+go_library(
+    name = "go_default_library",
+    srcs = [
+        "metaonly.go",
+        "types.generated.go",
+        "types.go",
+    ],
+    tags = ["automanaged"],
+    deps = [
+        "//pkg/api:go_default_library",
+        "//pkg/api/v1:go_default_library",
+        "//pkg/apis/meta/v1:go_default_library",
+        "//pkg/runtime:go_default_library",
+        "//pkg/runtime/schema:go_default_library",
+        "//pkg/runtime/serializer:go_default_library",
+        "//pkg/types:go_default_library",
+        "//vendor:github.com/ugorji/go/codec",
+    ],
+)
+
+go_test(
+    name = "go_default_test",
+    srcs = ["metaonly_test.go"],
+    library = "go_default_library",
+    tags = ["automanaged"],
+    deps = [
+        "//pkg/api/install:go_default_library",
+        "//pkg/api/meta:go_default_library",
+        "//pkg/api/v1:go_default_library",
+        "//pkg/apis/meta/v1:go_default_library",
+        "//pkg/runtime:go_default_library",
+        "//pkg/runtime/schema:go_default_library",
+        "//pkg/runtime/serializer:go_default_library",
+    ],
+)

vendor/k8s.io/kubernetes/pkg/controller/garbagecollector/metaonly/metaonly.go

@@ -0,0 +1,65 @@
+/*
+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 metaonly
+
+import (
+	"fmt"
+	"strings"
+
+	"k8s.io/kubernetes/pkg/api"
+	metav1 "k8s.io/kubernetes/pkg/apis/meta/v1"
+	"k8s.io/kubernetes/pkg/runtime"
+	"k8s.io/kubernetes/pkg/runtime/schema"
+	"k8s.io/kubernetes/pkg/runtime/serializer"
+)
+
+func (obj *MetadataOnlyObject) GetObjectKind() schema.ObjectKind     { return obj }
+func (obj *MetadataOnlyObjectList) GetObjectKind() schema.ObjectKind { return obj }
+
+type metaOnlyJSONScheme struct{}
+
+// This function can be extended to mapping different gvk to different MetadataOnlyObject,
+// which embedded with different version of ObjectMeta. Currently the system
+// only supports v1.ObjectMeta.
+func gvkToMetadataOnlyObject(gvk schema.GroupVersionKind) runtime.Object {
+	if strings.HasSuffix(gvk.Kind, "List") {
+		return &MetadataOnlyObjectList{}
+	} else {
+		return &MetadataOnlyObject{}
+	}
+}
+
+func NewMetadataCodecFactory() serializer.CodecFactory {
+	// populating another scheme from api.Scheme, registering every kind with
+	// MetadataOnlyObject (or MetadataOnlyObjectList).
+	scheme := runtime.NewScheme()
+	allTypes := api.Scheme.AllKnownTypes()
+	for kind := range allTypes {
+		if kind.Version == runtime.APIVersionInternal {
+			continue
+		}
+		metaOnlyObject := gvkToMetadataOnlyObject(kind)
+		scheme.AddKnownTypeWithName(kind, metaOnlyObject)
+	}
+	scheme.AddUnversionedTypes(api.Unversioned, &metav1.Status{})
+	return serializer.NewCodecFactory(scheme)
+}
+
+// String converts a MetadataOnlyObject to a human-readable string.
+func (metaOnly MetadataOnlyObject) String() string {
+	return fmt.Sprintf("%s/%s, name: %s, DeletionTimestamp:%v", metaOnly.TypeMeta.APIVersion, metaOnly.TypeMeta.Kind, metaOnly.ObjectMeta.Name, metaOnly.ObjectMeta.DeletionTimestamp)
+}

vendor/k8s.io/kubernetes/pkg/controller/garbagecollector/metaonly/metaonly_test.go

@@ -0,0 +1,164 @@
+/*
+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 metaonly
+
+import (
+	"encoding/json"
+	"reflect"
+	"testing"
+
+	_ "k8s.io/kubernetes/pkg/api/install"
+	"k8s.io/kubernetes/pkg/api/meta"
+	"k8s.io/kubernetes/pkg/api/v1"
+	metav1 "k8s.io/kubernetes/pkg/apis/meta/v1"
+	"k8s.io/kubernetes/pkg/runtime"
+	"k8s.io/kubernetes/pkg/runtime/schema"
+	"k8s.io/kubernetes/pkg/runtime/serializer"
+)
+
+func getPod() *v1.Pod {
+	return &v1.Pod{
+		TypeMeta: metav1.TypeMeta{
+			Kind:       "Pod",
+			APIVersion: "v1",
+		},
+		ObjectMeta: v1.ObjectMeta{
+			Name: "pod",
+			OwnerReferences: []v1.OwnerReference{
+				{UID: "1234"},
+			},
+		},
+		Spec: v1.PodSpec{
+			Containers: []v1.Container{
+				{
+					Name:  "fake-name",
+					Image: "fakeimage",
+				},
+			},
+		},
+	}
+}
+
+func getPodJson(t *testing.T) []byte {
+	data, err := json.Marshal(getPod())
+	if err != nil {
+		t.Fatal(err)
+	}
+	return data
+}
+
+func getPodListJson(t *testing.T) []byte {
+	data, err := json.Marshal(&v1.PodList{
+		TypeMeta: metav1.TypeMeta{
+			Kind:       "PodList",
+			APIVersion: "v1",
+		},
+		Items: []v1.Pod{
+			*getPod(),
+			*getPod(),
+		},
+	})
+	if err != nil {
+		t.Fatal(err)
+	}
+	return data
+}
+
+func verfiyMetadata(description string, t *testing.T, in *MetadataOnlyObject) {
+	pod := getPod()
+	if e, a := pod.ObjectMeta, in.ObjectMeta; !reflect.DeepEqual(e, a) {
+		t.Errorf("%s: expected %#v, got %#v", description, e, a)
+	}
+}
+
+func TestDecodeToMetadataOnlyObject(t *testing.T) {
+	data := getPodJson(t)
+	cf := serializer.DirectCodecFactory{CodecFactory: NewMetadataCodecFactory()}
+	info, ok := runtime.SerializerInfoForMediaType(cf.SupportedMediaTypes(), runtime.ContentTypeJSON)
+	if !ok {
+		t.Fatalf("expected to get a JSON serializer")
+	}
+	codec := cf.DecoderToVersion(info.Serializer, schema.GroupVersion{Group: "SOMEGROUP", Version: "SOMEVERSION"})
+	// decode with into
+	into := &MetadataOnlyObject{}
+	ret, _, err := codec.Decode(data, nil, into)
+	if err != nil {
+		t.Fatal(err)
+	}
+	metaOnly, ok := ret.(*MetadataOnlyObject)
+	if !ok {
+		t.Fatalf("expected ret to be *runtime.MetadataOnlyObject")
+	}
+	verfiyMetadata("check returned metaonly with into", t, metaOnly)
+	verfiyMetadata("check into", t, into)
+	// decode without into
+	ret, _, err = codec.Decode(data, nil, nil)
+	if err != nil {
+		t.Fatal(err)
+	}
+	metaOnly, ok = ret.(*MetadataOnlyObject)
+	if !ok {
+		t.Fatalf("expected ret to be *runtime.MetadataOnlyObject")
+	}
+	verfiyMetadata("check returned metaonly without into", t, metaOnly)
+}
+
+func verifyListMetadata(t *testing.T, metaOnlyList *MetadataOnlyObjectList) {
+	items, err := meta.ExtractList(metaOnlyList)
+	if err != nil {
+		t.Fatal(err)
+	}
+	for _, item := range items {
+		metaOnly, ok := item.(*MetadataOnlyObject)
+		if !ok {
+			t.Fatalf("expected item to be *MetadataOnlyObject")
+		}
+		verfiyMetadata("check list", t, metaOnly)
+	}
+}
+
+func TestDecodeToMetadataOnlyObjectList(t *testing.T) {
+	data := getPodListJson(t)
+	cf := serializer.DirectCodecFactory{CodecFactory: NewMetadataCodecFactory()}
+	info, ok := runtime.SerializerInfoForMediaType(cf.SupportedMediaTypes(), runtime.ContentTypeJSON)
+	if !ok {
+		t.Fatalf("expected to get a JSON serializer")
+	}
+	codec := cf.DecoderToVersion(info.Serializer, schema.GroupVersion{Group: "SOMEGROUP", Version: "SOMEVERSION"})
+	// decode with into
+	into := &MetadataOnlyObjectList{}
+	ret, _, err := codec.Decode(data, nil, into)
+	if err != nil {
+		t.Fatal(err)
+	}
+	metaOnlyList, ok := ret.(*MetadataOnlyObjectList)
+	if !ok {
+		t.Fatalf("expected ret to be *runtime.UnstructuredList")
+	}
+	verifyListMetadata(t, metaOnlyList)
+	verifyListMetadata(t, into)
+	// decode without into
+	ret, _, err = codec.Decode(data, nil, nil)
+	if err != nil {
+		t.Fatal(err)
+	}
+	metaOnlyList, ok = ret.(*MetadataOnlyObjectList)
+	if !ok {
+		t.Fatalf("expected ret to be *runtime.UnstructuredList")
+	}
+	verifyListMetadata(t, metaOnlyList)
+}

vendor/k8s.io/kubernetes/pkg/controller/garbagecollector/metaonly/types.go

@@ -0,0 +1,42 @@
+/*
+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 metaonly
+
+import (
+	"k8s.io/kubernetes/pkg/api/v1"
+	metav1 "k8s.io/kubernetes/pkg/apis/meta/v1"
+)
+
+// MetadataOnlyObject allows decoding only the apiVersion, kind, and metadata fields of
+// JSON data.
+// TODO: enable meta-only decoding for protobuf.
+type MetadataOnlyObject struct {
+	metav1.TypeMeta `json:",inline"`
+	// +optional
+	v1.ObjectMeta `json:"metadata,omitempty"`
+}
+
+// MetadataOnlyObjectList allows decoding from JSON data only the typemeta and metadata of
+// a list, and those of the enclosing objects.
+// TODO: enable meta-only decoding for protobuf.
+type MetadataOnlyObjectList struct {
+	metav1.TypeMeta `json:",inline"`
+	// +optional
+	metav1.ListMeta `json:"metadata,omitempty"`
+
+	Items []MetadataOnlyObject `json:"items"`
+}

vendor/k8s.io/kubernetes/pkg/controller/garbagecollector/metrics.go

@@ -0,0 +1,73 @@
+/*
+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 garbagecollector
+
+import (
+	"sync"
+	"time"
+
+	"k8s.io/kubernetes/pkg/util/clock"
+
+	"github.com/prometheus/client_golang/prometheus"
+)
+
+const (
+	GarbageCollectSubsystem    = "garbage_collector"
+	EventProcessingLatencyKey  = "event_processing_latency_microseconds"
+	DirtyProcessingLatencyKey  = "dirty_processing_latency_microseconds"
+	OrphanProcessingLatencyKey = "orphan_processing_latency_microseconds"
+)
+
+var (
+	EventProcessingLatency = prometheus.NewSummary(
+		prometheus.SummaryOpts{
+			Subsystem: GarbageCollectSubsystem,
+			Name:      EventProcessingLatencyKey,
+			Help:      "Time in microseconds of an event spend in the eventQueue",
+		},
+	)
+	DirtyProcessingLatency = prometheus.NewSummary(
+		prometheus.SummaryOpts{
+			Subsystem: GarbageCollectSubsystem,
+			Name:      DirtyProcessingLatencyKey,
+			Help:      "Time in microseconds of an item spend in the dirtyQueue",
+		},
+	)
+	OrphanProcessingLatency = prometheus.NewSummary(
+		prometheus.SummaryOpts{
+			Subsystem: GarbageCollectSubsystem,
+			Name:      OrphanProcessingLatencyKey,
+			Help:      "Time in microseconds of an item spend in the orphanQueue",
+		},
+	)
+)
+
+var registerMetrics sync.Once
+
+// Register all metrics.
+func Register() {
+	// Register the metrics.
+	registerMetrics.Do(func() {
+		prometheus.MustRegister(EventProcessingLatency)
+		prometheus.MustRegister(DirtyProcessingLatency)
+		prometheus.MustRegister(OrphanProcessingLatency)
+	})
+}
+
+func sinceInMicroseconds(clock clock.Clock, start time.Time) float64 {
+	return float64(clock.Since(start).Nanoseconds() / time.Microsecond.Nanoseconds())
+}

vendor/k8s.io/kubernetes/pkg/controller/garbagecollector/rate_limiter_helper.go

@@ -0,0 +1,60 @@
+/*
+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 garbagecollector
+
+import (
+	"fmt"
+	"strings"
+	"sync"
+
+	"k8s.io/kubernetes/pkg/client/typed/dynamic"
+	"k8s.io/kubernetes/pkg/runtime/schema"
+	"k8s.io/kubernetes/pkg/util/metrics"
+)
+
+// RegisteredRateLimiter records the registered RateLimters to avoid
+// duplication.
+type RegisteredRateLimiter struct {
+	rateLimiters map[schema.GroupVersion]*sync.Once
+}
+
+// NewRegisteredRateLimiter returns a new RegisteredRateLimiater.
+// TODO: NewRegisteredRateLimiter is not dynamic. We need to find a better way
+// when GC dynamically change the resources it monitors.
+func NewRegisteredRateLimiter(resources []schema.GroupVersionResource) *RegisteredRateLimiter {
+	rateLimiters := make(map[schema.GroupVersion]*sync.Once)
+	for _, resource := range resources {
+		gv := resource.GroupVersion()
+		if _, found := rateLimiters[gv]; !found {
+			rateLimiters[gv] = &sync.Once{}
+		}
+	}
+	return &RegisteredRateLimiter{rateLimiters: rateLimiters}
+}
+
+func (r *RegisteredRateLimiter) registerIfNotPresent(gv schema.GroupVersion, client *dynamic.Client, prefix string) {
+	once, found := r.rateLimiters[gv]
+	if !found {
+		return
+	}
+	once.Do(func() {
+		if rateLimiter := client.GetRateLimiter(); rateLimiter != nil {
+			group := strings.Replace(gv.Group, ".", ":", -1)
+			metrics.RegisterMetricAndTrackRateLimiterUsage(fmt.Sprintf("%s_%s_%s", prefix, group, gv.Version), rateLimiter)
+		}
+	})
+}

vendor/k8s.io/kubernetes/pkg/controller/garbagecollector/uid_cache.go

@@ -0,0 +1,52 @@
+/*
+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 garbagecollector
+
+import (
+	"sync"
+
+	"github.com/golang/groupcache/lru"
+	"k8s.io/kubernetes/pkg/types"
+)
+
+// UIDCache is an LRU cache for uid.
+type UIDCache struct {
+	mutex sync.Mutex
+	cache *lru.Cache
+}
+
+// NewUIDCache returns a UIDCache.
+func NewUIDCache(maxCacheEntries int) *UIDCache {
+	return &UIDCache{
+		cache: lru.New(maxCacheEntries),
+	}
+}
+
+// Add adds a uid to the cache.
+func (c *UIDCache) Add(uid types.UID) {
+	c.mutex.Lock()
+	defer c.mutex.Unlock()
+	c.cache.Add(uid, nil)
+}
+
+// Has returns if a uid is in the cache.
+func (c *UIDCache) Has(uid types.UID) bool {
+	c.mutex.Lock()
+	defer c.mutex.Unlock()
+	_, found := c.cache.Get(uid)
+	return found
+}