// newLoadBalancerController creates a new controller from the given config.
func newLoadBalancerController(cfg *loadBalancerConfig, kubeClient *unversioned.Client, namespace string) *loadBalancerController {
lbc := loadBalancerController{
cfg: cfg,
client: kubeClient,
queue: workqueue.New(),
reloadRateLimiter: util.NewTokenBucketRateLimiter(
reloadQPS, int(reloadQPS)),
targetService: *targetService,
forwardServices: *forwardServices,
httpPort: *httpPort,
tcpServices: map[string]int{},
}
for _, service := range strings.Split(*tcpServices, ",") {
portSplit := strings.Split(service, ":")
if len(portSplit) != 2 {
glog.Errorf("Ignoring misconfigured TCP service %v", service)
continue
}
if port, err := strconv.Atoi(portSplit[1]); err != nil {
glog.Errorf("Ignoring misconfigured TCP service %v: %v", service, err)
continue
} else {
lbc.tcpServices[portSplit[0]] = port
}
}
enqueue := func(obj interface{}) {
key, err := keyFunc(obj)
if err != nil {
glog.Infof("Couldn't get key for object %+v: %v", obj, err)
return
}
lbc.queue.Add(key)
}
eventHandlers := framework.ResourceEventHandlerFuncs{
AddFunc: enqueue,
DeleteFunc: enqueue,
UpdateFunc: func(old, cur interface{}) {
if !reflect.DeepEqual(old, cur) {
enqueue(cur)
}
},
}
lbc.svcLister.Store, lbc.svcController = framework.NewInformer(
cache.NewListWatchFromClient(
lbc.client, "services", namespace, fields.Everything()),
&api.Service{}, resyncPeriod, eventHandlers)
lbc.epLister.Store, lbc.epController = framework.NewInformer(
cache.NewListWatchFromClient(
lbc.client, "endpoints", namespace, fields.Everything()),
&api.Endpoints{}, resyncPeriod, eventHandlers)
return &lbc
}
// NewPersistentVolumeClaimBinder creates a new PersistentVolumeClaimBinder
func NewPersistentVolumeClaimBinder(kubeClient client.Interface, syncPeriod time.Duration) *PersistentVolumeClaimBinder {
volumeIndex := NewPersistentVolumeOrderedIndex()
binderClient := NewBinderClient(kubeClient)
binder := &PersistentVolumeClaimBinder{
volumeIndex: volumeIndex,
client: binderClient,
}
_, volumeController := framework.NewInformer(
&cache.ListWatch{
ListFunc: func() (runtime.Object, error) {
return kubeClient.PersistentVolumes().List(labels.Everything(), fields.Everything())
},
WatchFunc: func(resourceVersion string) (watch.Interface, error) {
return kubeClient.PersistentVolumes().Watch(labels.Everything(), fields.Everything(), resourceVersion)
},
},
&api.PersistentVolume{},
// TODO: Can we have much longer period here?
syncPeriod,
framework.ResourceEventHandlerFuncs{
AddFunc: binder.addVolume,
UpdateFunc: binder.updateVolume,
DeleteFunc: binder.deleteVolume,
},
)
_, claimController := framework.NewInformer(
&cache.ListWatch{
ListFunc: func() (runtime.Object, error) {
return kubeClient.PersistentVolumeClaims(api.NamespaceAll).List(labels.Everything(), fields.Everything())
},
WatchFunc: func(resourceVersion string) (watch.Interface, error) {
return kubeClient.PersistentVolumeClaims(api.NamespaceAll).Watch(labels.Everything(), fields.Everything(), resourceVersion)
},
},
&api.PersistentVolumeClaim{},
// TODO: Can we have much longer period here?
syncPeriod,
framework.ResourceEventHandlerFuncs{
AddFunc: binder.addClaim,
UpdateFunc: binder.updateClaim,
// no DeleteFunc needed. a claim requires no clean-up.
// syncVolume handles the missing claim
},
)
binder.claimController = claimController
binder.volumeController = volumeController
return binder
}
func New(kubeClient client.Interface, resyncPeriod controller.ResyncPeriodFunc, threshold int) *GCController {
eventBroadcaster := record.NewBroadcaster()
eventBroadcaster.StartLogging(glog.Infof)
eventBroadcaster.StartRecordingToSink(kubeClient.Events(""))
gcc := &GCController{
kubeClient: kubeClient,
threshold: threshold,
deletePod: func(namespace, name string) error {
return kubeClient.Pods(namespace).Delete(name, api.NewDeleteOptions(0))
},
}
terminatedSelector := compileTerminatedPodSelector()
gcc.podStore.Store, gcc.podStoreSyncer = framework.NewInformer(
&cache.ListWatch{
ListFunc: func() (runtime.Object, error) {
return gcc.kubeClient.Pods(api.NamespaceAll).List(labels.Everything(), terminatedSelector)
},
WatchFunc: func(rv string) (watch.Interface, error) {
return gcc.kubeClient.Pods(api.NamespaceAll).Watch(labels.Everything(), terminatedSelector, rv)
},
},
&api.Pod{},
resyncPeriod(),
framework.ResourceEventHandlerFuncs{},
)
return gcc
}
// NewEndpointController returns a new *EndpointController.
func NewEndpointController(client *client.Client, resyncPeriod controller.ResyncPeriodFunc) *EndpointController {
e := &EndpointController{
client: client,
queue: workqueue.New(),
}
e.serviceStore.Store, e.serviceController = framework.NewInformer(
&cache.ListWatch{
ListFunc: func() (runtime.Object, error) {
return e.client.Services(api.NamespaceAll).List(labels.Everything())
},
WatchFunc: func(rv string) (watch.Interface, error) {
return e.client.Services(api.NamespaceAll).Watch(labels.Everything(), fields.Everything(), rv)
},
},
&api.Service{},
// TODO: Can we have much longer period here?
FullServiceResyncPeriod,
framework.ResourceEventHandlerFuncs{
AddFunc: e.enqueueService,
UpdateFunc: func(old, cur interface{}) {
e.enqueueService(cur)
},
DeleteFunc: e.enqueueService,
},
)
e.podStore.Store, e.podController = framework.NewInformer(
&cache.ListWatch{
ListFunc: func() (runtime.Object, error) {
return e.client.Pods(api.NamespaceAll).List(labels.Everything(), fields.Everything())
},
WatchFunc: func(rv string) (watch.Interface, error) {
return e.client.Pods(api.NamespaceAll).Watch(labels.Everything(), fields.Everything(), rv)
},
},
&api.Pod{},
resyncPeriod(),
framework.ResourceEventHandlerFuncs{
AddFunc: e.addPod,
UpdateFunc: e.updatePod,
DeleteFunc: e.deletePod,
},
)
return e
}
func ExampleInformer() {
// source simulates an apiserver object endpoint.
source := framework.NewFakeControllerSource()
// Let's do threadsafe output to get predictable test results.
deletionCounter := make(chan string, 1000)
// Make a controller that immediately deletes anything added to it, and
// logs anything deleted.
_, controller := framework.NewInformer(
source,
&api.Pod{},
time.Millisecond*100,
framework.ResourceEventHandlerFuncs{
AddFunc: func(obj interface{}) {
source.Delete(obj.(runtime.Object))
},
DeleteFunc: func(obj interface{}) {
key, err := framework.DeletionHandlingMetaNamespaceKeyFunc(obj)
if err != nil {
key = "oops something went wrong with the key"
}
// Report this deletion.
deletionCounter <- key
},
},
)
// Run the controller and run it until we close stop.
stop := make(chan struct{})
defer close(stop)
go controller.Run(stop)
// Let's add a few objects to the source.
testIDs := []string{"a-hello", "b-controller", "c-framework"}
for _, name := range testIDs {
// Note that these pods are not valid-- the fake source doesn't
// call validation or anything.
source.Add(&api.Pod{ObjectMeta: api.ObjectMeta{Name: name}})
}
// Let's wait for the controller to process the things we just added.
outputSet := sets.String{}
for i := 0; i < len(testIDs); i++ {
outputSet.Insert(<-deletionCounter)
}
for _, key := range outputSet.List() {
fmt.Println(key)
}
// Output:
// a-hello
// b-controller
// c-framework
}
func watchForServices(kubeClient *kclient.Client, ks *kube2sky) kcache.Store {
serviceStore, serviceController := kframework.NewInformer(
createServiceLW(kubeClient),
&kapi.Service{},
resyncPeriod,
kframework.ResourceEventHandlerFuncs{
AddFunc: ks.newService,
DeleteFunc: ks.removeService,
UpdateFunc: ks.updateService,
},
)
go serviceController.Run(util.NeverStop)
return serviceStore
}
// Initializes the factory.
func NewConfigFactory(client *client.Client, rateLimiter util.RateLimiter) *ConfigFactory {
c := &ConfigFactory{
Client: client,
PodQueue: cache.NewFIFO(cache.MetaNamespaceKeyFunc),
ScheduledPodLister: &cache.StoreToPodLister{},
// Only nodes in the "Ready" condition with status == "True" are schedulable
NodeLister: &cache.StoreToNodeLister{Store: cache.NewStore(cache.MetaNamespaceKeyFunc)},
ServiceLister: &cache.StoreToServiceLister{Store: cache.NewStore(cache.MetaNamespaceKeyFunc)},
ControllerLister: &cache.StoreToReplicationControllerLister{Store: cache.NewStore(cache.MetaNamespaceKeyFunc)},
StopEverything: make(chan struct{}),
}
modeler := scheduler.NewSimpleModeler(&cache.StoreToPodLister{Store: c.PodQueue}, c.ScheduledPodLister)
c.modeler = modeler
c.PodLister = modeler.PodLister()
c.BindPodsRateLimiter = rateLimiter
// On add/delete to the scheduled pods, remove from the assumed pods.
// We construct this here instead of in CreateFromKeys because
// ScheduledPodLister is something we provide to plug in functions that
// they may need to call.
c.ScheduledPodLister.Store, c.scheduledPodPopulator = framework.NewInformer(
c.createAssignedPodLW(),
&api.Pod{},
0,
framework.ResourceEventHandlerFuncs{
AddFunc: func(obj interface{}) {
if pod, ok := obj.(*api.Pod); ok {
c.modeler.LockedAction(func() {
c.modeler.ForgetPod(pod)
})
}
},
DeleteFunc: func(obj interface{}) {
c.modeler.LockedAction(func() {
switch t := obj.(type) {
case *api.Pod:
c.modeler.ForgetPod(t)
case cache.DeletedFinalStateUnknown:
c.modeler.ForgetPodByKey(t.Key)
}
})
},
},
)
return c
}
func watchEndpoints(kubeClient *kclient.Client, ks *kube2sky) kcache.Store {
eStore, eController := kframework.NewInformer(
createEndpointsLW(kubeClient),
&kapi.Endpoints{},
resyncPeriod,
kframework.ResourceEventHandlerFuncs{
AddFunc: ks.handleEndpointAdd,
UpdateFunc: func(oldObj, newObj interface{}) {
// TODO: Avoid unwanted updates.
ks.handleEndpointAdd(newObj)
},
},
)
go eController.Run(util.NeverStop)
return eStore
}
func watchPods(kubeClient *kclient.Client, ks *kube2sky) kcache.Store {
eStore, eController := kframework.NewInformer(
createEndpointsPodLW(kubeClient),
&kapi.Pod{},
resyncPeriod,
kframework.ResourceEventHandlerFuncs{
AddFunc: ks.handlePodCreate,
UpdateFunc: func(oldObj, newObj interface{}) {
ks.handlePodUpdate(oldObj, newObj)
},
DeleteFunc: ks.handlePodDelete,
},
)
go eController.Run(util.NeverStop)
return eStore
}
// New creates a new kubernetes executor.
func New(config Config) *KubernetesExecutor {
k := &KubernetesExecutor{
kl: config.Kubelet,
updateChan: config.Updates,
state: disconnectedState,
tasks: make(map[string]*kuberTask),
pods: make(map[string]*api.Pod),
sourcename: config.SourceName,
client: config.APIClient,
done: make(chan struct{}),
outgoing: make(chan func() (mesos.Status, error), 1024),
dockerClient: config.Docker,
suicideTimeout: config.SuicideTimeout,
kubeletFinished: config.KubeletFinished,
suicideWatch: &suicideTimer{},
shutdownAlert: config.ShutdownAlert,
exitFunc: config.ExitFunc,
podStatusFunc: config.PodStatusFunc,
initialRegComplete: make(chan struct{}),
staticPodsConfigPath: config.StaticPodsConfigPath,
}
// watch pods from the given pod ListWatch
_, k.podController = framework.NewInformer(config.PodLW, &api.Pod{}, podRelistPeriod, &framework.ResourceEventHandlerFuncs{
AddFunc: func(obj interface{}) {
pod := obj.(*api.Pod)
log.V(4).Infof("pod %s/%s created on apiserver", pod.Namespace, pod.Name)
k.handleChangedApiserverPod(pod)
},
UpdateFunc: func(oldObj, newObj interface{}) {
pod := newObj.(*api.Pod)
log.V(4).Infof("pod %s/%s updated on apiserver", pod.Namespace, pod.Name)
k.handleChangedApiserverPod(pod)
},
DeleteFunc: func(obj interface{}) {
pod := obj.(*api.Pod)
log.V(4).Infof("pod %s/%s deleted on apiserver", pod.Namespace, pod.Name)
},
})
return k
}
// PersistentVolumeRecycler creates a new PersistentVolumeRecycler
func NewPersistentVolumeRecycler(kubeClient client.Interface, syncPeriod time.Duration, plugins []volume.VolumePlugin) (*PersistentVolumeRecycler, error) {
recyclerClient := NewRecyclerClient(kubeClient)
recycler := &PersistentVolumeRecycler{
client: recyclerClient,
kubeClient: kubeClient,
}
if err := recycler.pluginMgr.InitPlugins(plugins, recycler); err != nil {
return nil, fmt.Errorf("Could not initialize volume plugins for PVClaimBinder: %+v", err)
}
_, volumeController := framework.NewInformer(
&cache.ListWatch{
ListFunc: func() (runtime.Object, error) {
return kubeClient.PersistentVolumes().List(labels.Everything(), fields.Everything())
},
WatchFunc: func(resourceVersion string) (watch.Interface, error) {
return kubeClient.PersistentVolumes().Watch(labels.Everything(), fields.Everything(), resourceVersion)
},
},
&api.PersistentVolume{},
// TODO: Can we have much longer period here?
syncPeriod,
framework.ResourceEventHandlerFuncs{
AddFunc: func(obj interface{}) {
pv := obj.(*api.PersistentVolume)
recycler.reclaimVolume(pv)
},
UpdateFunc: func(oldObj, newObj interface{}) {
pv := newObj.(*api.PersistentVolume)
recycler.reclaimVolume(pv)
},
},
)
recycler.volumeController = volumeController
return recycler, nil
}
// blocks until it has finished syncing.
func startEndpointWatcher(f *Framework, q *endpointQueries) {
_, controller := framework.NewInformer(
&cache.ListWatch{
ListFunc: func() (runtime.Object, error) {
return f.Client.Endpoints(f.Namespace.Name).List(labels.Everything())
},
WatchFunc: func(rv string) (watch.Interface, error) {
return f.Client.Endpoints(f.Namespace.Name).Watch(labels.Everything(), fields.Everything(), rv)
},
},
&api.Endpoints{},
0,
framework.ResourceEventHandlerFuncs{
AddFunc: func(obj interface{}) {
if e, ok := obj.(*api.Endpoints); ok {
if len(e.Subsets) > 0 && len(e.Subsets[0].Addresses) > 0 {
q.added(e)
}
}
},
UpdateFunc: func(old, cur interface{}) {
if e, ok := cur.(*api.Endpoints); ok {
if len(e.Subsets) > 0 && len(e.Subsets[0].Addresses) > 0 {
q.added(e)
}
}
},
},
)
go controller.Run(q.stop)
// Wait for the controller to sync, so that we don't count any warm-up time.
for !controller.HasSynced() {
time.Sleep(100 * time.Millisecond)
}
}
// NewNamespaceController creates a new NamespaceController
func NewNamespaceController(kubeClient client.Interface, versions *unversioned.APIVersions, resyncPeriod time.Duration) *NamespaceController {
var controller *framework.Controller
_, controller = framework.NewInformer(
&cache.ListWatch{
ListFunc: func() (runtime.Object, error) {
return kubeClient.Namespaces().List(labels.Everything(), fields.Everything())
},
WatchFunc: func(resourceVersion string) (watch.Interface, error) {
return kubeClient.Namespaces().Watch(labels.Everything(), fields.Everything(), resourceVersion)
},
},
&api.Namespace{},
// TODO: Can we have much longer period here?
resyncPeriod,
framework.ResourceEventHandlerFuncs{
AddFunc: func(obj interface{}) {
namespace := obj.(*api.Namespace)
if err := syncNamespace(kubeClient, versions, namespace); err != nil {
if estimate, ok := err.(*contentRemainingError); ok {
go func() {
// Estimate is the aggregate total of TerminationGracePeriodSeconds, which defaults to 30s
// for pods. However, most processes will terminate faster - within a few seconds, probably
// with a peak within 5-10s. So this division is a heuristic that avoids waiting the full
// duration when in many cases things complete more quickly. The extra second added is to
// ensure we never wait 0 seconds.
t := estimate.Estimate/2 + 1
glog.V(4).Infof("Content remaining in namespace %s, waiting %d seconds", namespace.Name, t)
time.Sleep(time.Duration(t) * time.Second)
if err := controller.Requeue(namespace); err != nil {
util.HandleError(err)
}
}()
return
}
util.HandleError(err)
}
},
UpdateFunc: func(oldObj, newObj interface{}) {
namespace := newObj.(*api.Namespace)
if err := syncNamespace(kubeClient, versions, namespace); err != nil {
if estimate, ok := err.(*contentRemainingError); ok {
go func() {
t := estimate.Estimate/2 + 1
glog.V(4).Infof("Content remaining in namespace %s, waiting %d seconds", namespace.Name, t)
time.Sleep(time.Duration(t) * time.Second)
if err := controller.Requeue(namespace); err != nil {
util.HandleError(err)
}
}()
return
}
util.HandleError(err)
}
},
},
)
return &NamespaceController{
controller: controller,
}
}
func NewDaemonSetsController(kubeClient client.Interface, resyncPeriod controller.ResyncPeriodFunc) *DaemonSetsController {
eventBroadcaster := record.NewBroadcaster()
eventBroadcaster.StartLogging(glog.Infof)
eventBroadcaster.StartRecordingToSink(kubeClient.Events(""))
dsc := &DaemonSetsController{
kubeClient: kubeClient,
podControl: controller.RealPodControl{
KubeClient: kubeClient,
Recorder: eventBroadcaster.NewRecorder(api.EventSource{Component: "daemon-set"}),
},
expectations: controller.NewControllerExpectations(),
queue: workqueue.New(),
}
// Manage addition/update of daemon sets.
dsc.dsStore.Store, dsc.dsController = framework.NewInformer(
&cache.ListWatch{
ListFunc: func() (runtime.Object, error) {
return dsc.kubeClient.Extensions().DaemonSets(api.NamespaceAll).List(labels.Everything())
},
WatchFunc: func(rv string) (watch.Interface, error) {
return dsc.kubeClient.Extensions().DaemonSets(api.NamespaceAll).Watch(labels.Everything(), fields.Everything(), rv)
},
},
&extensions.DaemonSet{},
// TODO: Can we have much longer period here?
FullDaemonSetResyncPeriod,
framework.ResourceEventHandlerFuncs{
AddFunc: func(obj interface{}) {
ds := obj.(*extensions.DaemonSet)
glog.V(4).Infof("Adding daemon set %s", ds.Name)
dsc.enqueueDaemonSet(obj)
},
UpdateFunc: func(old, cur interface{}) {
oldDS := old.(*extensions.DaemonSet)
glog.V(4).Infof("Updating daemon set %s", oldDS.Name)
dsc.enqueueDaemonSet(cur)
},
DeleteFunc: func(obj interface{}) {
ds := obj.(*extensions.DaemonSet)
glog.V(4).Infof("Deleting daemon set %s", ds.Name)
dsc.enqueueDaemonSet(obj)
},
},
)
// Watch for creation/deletion of pods. The reason we watch is that we don't want a daemon set to create/delete
// more pods until all the effects (expectations) of a daemon set's create/delete have been observed.
dsc.podStore.Store, dsc.podController = framework.NewInformer(
&cache.ListWatch{
ListFunc: func() (runtime.Object, error) {
return dsc.kubeClient.Pods(api.NamespaceAll).List(labels.Everything(), fields.Everything())
},
WatchFunc: func(rv string) (watch.Interface, error) {
return dsc.kubeClient.Pods(api.NamespaceAll).Watch(labels.Everything(), fields.Everything(), rv)
},
},
&api.Pod{},
resyncPeriod(),
framework.ResourceEventHandlerFuncs{
AddFunc: dsc.addPod,
UpdateFunc: dsc.updatePod,
DeleteFunc: dsc.deletePod,
},
)
// Watch for new nodes or updates to nodes - daemon pods are launched on new nodes, and possibly when labels on nodes change,
dsc.nodeStore.Store, dsc.nodeController = framework.NewInformer(
&cache.ListWatch{
ListFunc: func() (runtime.Object, error) {
return dsc.kubeClient.Nodes().List(labels.Everything(), fields.Everything())
},
WatchFunc: func(rv string) (watch.Interface, error) {
return dsc.kubeClient.Nodes().Watch(labels.Everything(), fields.Everything(), rv)
},
},
&api.Node{},
resyncPeriod(),
framework.ResourceEventHandlerFuncs{
AddFunc: dsc.addNode,
UpdateFunc: dsc.updateNode,
},
)
dsc.syncHandler = dsc.syncDaemonSet
dsc.podStoreSynced = dsc.podController.HasSynced
return dsc
}
// NewNodeController returns a new node controller to sync instances from cloudprovider.
func NewNodeController(
cloud cloudprovider.Interface,
kubeClient client.Interface,
podEvictionTimeout time.Duration,
deletionEvictionLimiter util.RateLimiter,
terminationEvictionLimiter util.RateLimiter,
nodeMonitorGracePeriod time.Duration,
nodeStartupGracePeriod time.Duration,
nodeMonitorPeriod time.Duration,
clusterCIDR *net.IPNet,
allocateNodeCIDRs bool) *NodeController {
eventBroadcaster := record.NewBroadcaster()
recorder := eventBroadcaster.NewRecorder(api.EventSource{Component: "controllermanager"})
eventBroadcaster.StartLogging(glog.Infof)
if kubeClient != nil {
glog.Infof("Sending events to api server.")
eventBroadcaster.StartRecordingToSink(kubeClient.Events(""))
} else {
glog.Infof("No api server defined - no events will be sent to API server.")
}
if allocateNodeCIDRs && clusterCIDR == nil {
glog.Fatal("NodeController: Must specify clusterCIDR if allocateNodeCIDRs == true.")
}
evictorLock := sync.Mutex{}
nc := &NodeController{
cloud: cloud,
knownNodeSet: make(sets.String),
kubeClient: kubeClient,
recorder: recorder,
podEvictionTimeout: podEvictionTimeout,
maximumGracePeriod: 5 * time.Minute,
evictorLock: &evictorLock,
podEvictor: NewRateLimitedTimedQueue(deletionEvictionLimiter),
terminationEvictor: NewRateLimitedTimedQueue(terminationEvictionLimiter),
nodeStatusMap: make(map[string]nodeStatusData),
nodeMonitorGracePeriod: nodeMonitorGracePeriod,
nodeMonitorPeriod: nodeMonitorPeriod,
nodeStartupGracePeriod: nodeStartupGracePeriod,
lookupIP: net.LookupIP,
now: unversioned.Now,
clusterCIDR: clusterCIDR,
allocateNodeCIDRs: allocateNodeCIDRs,
forcefullyDeletePod: func(p *api.Pod) { forcefullyDeletePod(kubeClient, p) },
}
nc.podStore.Store, nc.podController = framework.NewInformer(
&cache.ListWatch{
ListFunc: func() (runtime.Object, error) {
return nc.kubeClient.Pods(api.NamespaceAll).List(labels.Everything(), fields.Everything())
},
WatchFunc: func(rv string) (watch.Interface, error) {
return nc.kubeClient.Pods(api.NamespaceAll).Watch(labels.Everything(), fields.Everything(), rv)
},
},
&api.Pod{},
controller.NoResyncPeriodFunc(),
framework.ResourceEventHandlerFuncs{
AddFunc: nc.maybeDeleteTerminatingPod,
UpdateFunc: func(_, obj interface{}) { nc.maybeDeleteTerminatingPod(obj) },
},
)
nc.nodeStore.Store, nc.nodeController = framework.NewInformer(
&cache.ListWatch{
ListFunc: func() (runtime.Object, error) {
return nc.kubeClient.Nodes().List(labels.Everything(), fields.Everything())
},
WatchFunc: func(rv string) (watch.Interface, error) {
return nc.kubeClient.Nodes().Watch(labels.Everything(), fields.Everything(), rv)
},
},
&api.Node{},
controller.NoResyncPeriodFunc(),
framework.ResourceEventHandlerFuncs{},
)
return nc
}
PodStatusFile: fileHndl,
Replicas: totalPods,
MaxContainerFailures: &MaxContainerFailures,
}
// Create a listener for events.
events := make([](*api.Event), 0)
_, controller := controllerFramework.NewInformer(
&cache.ListWatch{
ListFunc: func() (runtime.Object, error) {
return c.Events(ns).List(labels.Everything(), fields.Everything())
},
WatchFunc: func(rv string) (watch.Interface, error) {
return c.Events(ns).Watch(labels.Everything(), fields.Everything(), rv)
},
},
&api.Event{},
0,
controllerFramework.ResourceEventHandlerFuncs{
AddFunc: func(obj interface{}) {
events = append(events, obj.(*api.Event))
},
},
)
stop := make(chan struct{})
go controller.Run(stop)
// Start the replication controller.
startTime := time.Now()
expectNoError(RunRC(config))
e2eStartupTime := time.Now().Sub(startTime)
// NewReplicationManager creates a new ReplicationManager.
func NewReplicationManager(kubeClient client.Interface, resyncPeriod controller.ResyncPeriodFunc, burstReplicas int) *ReplicationManager {
eventBroadcaster := record.NewBroadcaster()
eventBroadcaster.StartLogging(glog.Infof)
eventBroadcaster.StartRecordingToSink(kubeClient.Events(""))
rm := &ReplicationManager{
kubeClient: kubeClient,
podControl: controller.RealPodControl{
KubeClient: kubeClient,
Recorder: eventBroadcaster.NewRecorder(api.EventSource{Component: "replication-controller"}),
},
burstReplicas: burstReplicas,
expectations: controller.NewControllerExpectations(),
queue: workqueue.New(),
}
rm.rcStore.Store, rm.rcController = framework.NewInformer(
&cache.ListWatch{
ListFunc: func() (runtime.Object, error) {
return rm.kubeClient.ReplicationControllers(api.NamespaceAll).List(labels.Everything())
},
WatchFunc: func(rv string) (watch.Interface, error) {
return rm.kubeClient.ReplicationControllers(api.NamespaceAll).Watch(labels.Everything(), fields.Everything(), rv)
},
},
&api.ReplicationController{},
// TODO: Can we have much longer period here?
FullControllerResyncPeriod,
framework.ResourceEventHandlerFuncs{
AddFunc: rm.enqueueController,
UpdateFunc: func(old, cur interface{}) {
// You might imagine that we only really need to enqueue the
// controller when Spec changes, but it is safer to sync any
// time this function is triggered. That way a full informer
// resync can requeue any controllers that don't yet have pods
// but whose last attempts at creating a pod have failed (since
// we don't block on creation of pods) instead of those
// controllers stalling indefinitely. Enqueueing every time
// does result in some spurious syncs (like when Status.Replica
// is updated and the watch notification from it retriggers
// this function), but in general extra resyncs shouldn't be
// that bad as rcs that haven't met expectations yet won't
// sync, and all the listing is done using local stores.
oldRC := old.(*api.ReplicationController)
curRC := cur.(*api.ReplicationController)
if oldRC.Status.Replicas != curRC.Status.Replicas {
glog.V(4).Infof("Observed updated replica count for rc: %v, %d->%d", curRC.Name, oldRC.Status.Replicas, curRC.Status.Replicas)
}
rm.enqueueController(cur)
},
// This will enter the sync loop and no-op, because the controller has been deleted from the store.
// Note that deleting a controller immediately after scaling it to 0 will not work. The recommended
// way of achieving this is by performing a `stop` operation on the controller.
DeleteFunc: rm.enqueueController,
},
)
rm.podStore.Store, rm.podController = framework.NewInformer(
&cache.ListWatch{
ListFunc: func() (runtime.Object, error) {
return rm.kubeClient.Pods(api.NamespaceAll).List(labels.Everything(), fields.Everything())
},
WatchFunc: func(rv string) (watch.Interface, error) {
return rm.kubeClient.Pods(api.NamespaceAll).Watch(labels.Everything(), fields.Everything(), rv)
},
},
&api.Pod{},
resyncPeriod(),
framework.ResourceEventHandlerFuncs{
AddFunc: rm.addPod,
// This invokes the rc for every pod change, eg: host assignment. Though this might seem like overkill
// the most frequent pod update is status, and the associated rc will only list from local storage, so
// it should be ok.
UpdateFunc: rm.updatePod,
DeleteFunc: rm.deletePod,
},
)
rm.syncHandler = rm.syncReplicationController
rm.podStoreSynced = rm.podController.HasSynced
return rm
}
func TestHammerController(t *testing.T) {
// This test executes a bunch of requests through the fake source and
// controller framework to make sure there's no locking/threading
// errors. If an error happens, it should hang forever or trigger the
// race detector.
// source simulates an apiserver object endpoint.
source := framework.NewFakeControllerSource()
// Let's do threadsafe output to get predictable test results.
outputSetLock := sync.Mutex{}
// map of key to operations done on the key
outputSet := map[string][]string{}
recordFunc := func(eventType string, obj interface{}) {
key, err := framework.DeletionHandlingMetaNamespaceKeyFunc(obj)
if err != nil {
t.Errorf("something wrong with key: %v", err)
key = "oops something went wrong with the key"
}
// Record some output when items are deleted.
outputSetLock.Lock()
defer outputSetLock.Unlock()
outputSet[key] = append(outputSet[key], eventType)
}
// Make a controller which just logs all the changes it gets.
_, controller := framework.NewInformer(
source,
&api.Pod{},
time.Millisecond*100,
framework.ResourceEventHandlerFuncs{
AddFunc: func(obj interface{}) { recordFunc("add", obj) },
UpdateFunc: func(oldObj, newObj interface{}) { recordFunc("update", newObj) },
DeleteFunc: func(obj interface{}) { recordFunc("delete", obj) },
},
)
if controller.HasSynced() {
t.Errorf("Expected HasSynced() to return false before we started the controller")
}
// Run the controller and run it until we close stop.
stop := make(chan struct{})
go controller.Run(stop)
// Let's wait for the controller to do its initial sync
time.Sleep(100 * time.Millisecond)
if !controller.HasSynced() {
t.Errorf("Expected HasSynced() to return true after the initial sync")
}
wg := sync.WaitGroup{}
const threads = 3
wg.Add(threads)
for i := 0; i < threads; i++ {
go func() {
defer wg.Done()
// Let's add a few objects to the source.
currentNames := sets.String{}
rs := rand.NewSource(rand.Int63())
f := fuzz.New().NilChance(.5).NumElements(0, 2).RandSource(rs)
r := rand.New(rs) // Mustn't use r and f concurrently!
for i := 0; i < 100; i++ {
var name string
var isNew bool
if currentNames.Len() == 0 || r.Intn(3) == 1 {
f.Fuzz(&name)
isNew = true
} else {
l := currentNames.List()
name = l[r.Intn(len(l))]
}
pod := &api.Pod{}
f.Fuzz(pod)
pod.ObjectMeta.Name = name
pod.ObjectMeta.Namespace = "default"
// Add, update, or delete randomly.
// Note that these pods are not valid-- the fake source doesn't
// call validation or perform any other checking.
if isNew {
currentNames.Insert(name)
source.Add(pod)
continue
}
switch r.Intn(2) {
case 0:
currentNames.Insert(name)
source.Modify(pod)
case 1:
currentNames.Delete(name)
source.Delete(pod)
}
}
}()
}
wg.Wait()
// Let's wait for the controller to finish processing the things we just added.
time.Sleep(100 * time.Millisecond)
close(stop)
outputSetLock.Lock()
t.Logf("got: %#v", outputSet)
}
Namespace: ns,
Image: "kubernetes/pause",
Replicas: numPods,
CreatedPods: &[]*api.Pod{},
}
Expect(RunRC(config)).NotTo(HaveOccurred())
replacePods(*config.CreatedPods, existingPods)
stopCh = make(chan struct{})
newPods, controller = controllerFramework.NewInformer(
&cache.ListWatch{
ListFunc: func() (runtime.Object, error) {
return framework.Client.Pods(ns).List(labelSelector, fields.Everything())
},
WatchFunc: func(rv string) (watch.Interface, error) {
return framework.Client.Pods(ns).Watch(labelSelector, fields.Everything(), rv)
},
},
&api.Pod{},
0,
controllerFramework.ResourceEventHandlerFuncs{},
)
go controller.Run(stopCh)
})
AfterEach(func() {
defer framework.afterEach()
close(stopCh)
expectNoError(DeleteRC(framework.Client, ns, rcName))
})
func NewJobController(kubeClient client.Interface, resyncPeriod controller.ResyncPeriodFunc) *JobController {
eventBroadcaster := record.NewBroadcaster()
eventBroadcaster.StartLogging(glog.Infof)
eventBroadcaster.StartRecordingToSink(kubeClient.Events(""))
jm := &JobController{
kubeClient: kubeClient,
podControl: controller.RealPodControl{
KubeClient: kubeClient,
Recorder: eventBroadcaster.NewRecorder(api.EventSource{Component: "job"}),
},
expectations: controller.NewControllerExpectations(),
queue: workqueue.New(),
}
jm.jobStore.Store, jm.jobController = framework.NewInformer(
&cache.ListWatch{
ListFunc: func() (runtime.Object, error) {
return jm.kubeClient.Extensions().Jobs(api.NamespaceAll).List(labels.Everything(), fields.Everything())
},
WatchFunc: func(rv string) (watch.Interface, error) {
return jm.kubeClient.Extensions().Jobs(api.NamespaceAll).Watch(labels.Everything(), fields.Everything(), rv)
},
},
&extensions.Job{},
// TODO: Can we have much longer period here?
replicationcontroller.FullControllerResyncPeriod,
framework.ResourceEventHandlerFuncs{
AddFunc: jm.enqueueController,
UpdateFunc: func(old, cur interface{}) {
job := cur.(*extensions.Job)
for _, c := range job.Status.Conditions {
if c.Type == extensions.JobComplete && c.Status == api.ConditionTrue {
return
}
}
jm.enqueueController(cur)
},
DeleteFunc: jm.enqueueController,
},
)
jm.podStore.Store, jm.podController = framework.NewInformer(
&cache.ListWatch{
ListFunc: func() (runtime.Object, error) {
return jm.kubeClient.Pods(api.NamespaceAll).List(labels.Everything(), fields.Everything())
},
WatchFunc: func(rv string) (watch.Interface, error) {
return jm.kubeClient.Pods(api.NamespaceAll).Watch(labels.Everything(), fields.Everything(), rv)
},
},
&api.Pod{},
resyncPeriod(),
framework.ResourceEventHandlerFuncs{
AddFunc: jm.addPod,
UpdateFunc: jm.updatePod,
DeleteFunc: jm.deletePod,
},
)
jm.updateHandler = jm.updateJobStatus
jm.syncHandler = jm.syncJob
jm.podStoreSynced = jm.podController.HasSynced
return jm
}
func TestUpdate(t *testing.T) {
// This test is going to exercise the various paths that result in a
// call to update.
// source simulates an apiserver object endpoint.
source := framework.NewFakeControllerSource()
const (
FROM = "from"
ADD_MISSED = "missed the add event"
TO = "to"
)
// These are the transitions we expect to see; because this is
// asynchronous, there are a lot of valid possibilities.
type pair struct{ from, to string }
allowedTransitions := map[pair]bool{
pair{FROM, TO}: true,
pair{FROM, ADD_MISSED}: true,
pair{ADD_MISSED, TO}: true,
// Because a resync can happen when we've already observed one
// of the above but before the item is deleted.
pair{TO, TO}: true,
// Because a resync could happen before we observe an update.
pair{FROM, FROM}: true,
}
pod := func(name, check string) *api.Pod {
return &api.Pod{
ObjectMeta: api.ObjectMeta{
Name: name,
Labels: map[string]string{"check": check},
},
}
}
tests := []func(string){
func(name string) {
name = "a-" + name
source.Add(pod(name, FROM))
source.Modify(pod(name, TO))
},
func(name string) {
name = "b-" + name
source.Add(pod(name, FROM))
source.ModifyDropWatch(pod(name, TO))
},
func(name string) {
name = "c-" + name
source.AddDropWatch(pod(name, FROM))
source.Modify(pod(name, ADD_MISSED))
source.Modify(pod(name, TO))
},
func(name string) {
name = "d-" + name
source.Add(pod(name, FROM))
},
}
const threads = 3
var testDoneWG sync.WaitGroup
testDoneWG.Add(threads * len(tests))
// Make a controller that deletes things once it observes an update.
// It calls Done() on the wait group on deletions so we can tell when
// everything we've added has been deleted.
_, controller := framework.NewInformer(
source,
&api.Pod{},
time.Millisecond*1,
framework.ResourceEventHandlerFuncs{
UpdateFunc: func(oldObj, newObj interface{}) {
o, n := oldObj.(*api.Pod), newObj.(*api.Pod)
from, to := o.Labels["check"], n.Labels["check"]
if !allowedTransitions[pair{from, to}] {
t.Errorf("observed transition %q -> %q for %v", from, to, n.Name)
}
source.Delete(n)
},
DeleteFunc: func(obj interface{}) {
testDoneWG.Done()
},
},
)
// Run the controller and run it until we close stop.
// Once Run() is called, calls to testDoneWG.Done() might start, so
// all testDoneWG.Add() calls must happen before this point
stop := make(chan struct{})
go controller.Run(stop)
// run every test a few times, in parallel
var wg sync.WaitGroup
wg.Add(threads * len(tests))
for i := 0; i < threads; i++ {
for j, f := range tests {
go func(name string, f func(string)) {
defer wg.Done()
f(name)
}(fmt.Sprintf("%v-%v", i, j), f)
}
}
wg.Wait()
// Let's wait for the controller to process the things we just added.
testDoneWG.Wait()
close(stop)
}
// NewLoadBalancerController creates a controller for gce loadbalancers.
// - kubeClient: A kubernetes REST client.
// - clusterManager: A ClusterManager capable of creating all cloud resources
// required for L7 loadbalancing.
// - resyncPeriod: Watchers relist from the Kubernetes API server this often.
func NewLoadBalancerController(kubeClient *client.Client, clusterManager *ClusterManager, resyncPeriod time.Duration, namespace string) (*loadBalancerController, error) {
eventBroadcaster := record.NewBroadcaster()
eventBroadcaster.StartLogging(glog.Infof)
eventBroadcaster.StartRecordingToSink(kubeClient.Events(""))
lbc := loadBalancerController{
client: kubeClient,
clusterManager: clusterManager,
stopCh: make(chan struct{}),
recorder: eventBroadcaster.NewRecorder(
api.EventSource{Component: "loadbalancer-controller"}),
}
lbc.nodeQueue = NewTaskQueue(lbc.syncNodes)
lbc.ingQueue = NewTaskQueue(lbc.sync)
// Ingress watch handlers
pathHandlers := framework.ResourceEventHandlerFuncs{
AddFunc: func(obj interface{}) {
addIng := obj.(*extensions.Ingress)
lbc.recorder.Eventf(addIng, "ADD", addIng.Name)
lbc.ingQueue.enqueue(obj)
},
DeleteFunc: lbc.ingQueue.enqueue,
UpdateFunc: func(old, cur interface{}) {
if !reflect.DeepEqual(old, cur) {
glog.V(3).Infof("Ingress %v changed, syncing",
cur.(*extensions.Ingress).Name)
}
lbc.ingQueue.enqueue(cur)
},
}
lbc.ingLister.Store, lbc.ingController = framework.NewInformer(
&cache.ListWatch{
ListFunc: ingressListFunc(lbc.client, namespace),
WatchFunc: ingressWatchFunc(lbc.client, namespace),
},
&extensions.Ingress{}, resyncPeriod, pathHandlers)
// Service watch handlers
svcHandlers := framework.ResourceEventHandlerFuncs{
AddFunc: lbc.enqueueIngressForService,
UpdateFunc: func(old, cur interface{}) {
if !reflect.DeepEqual(old, cur) {
lbc.enqueueIngressForService(cur)
}
},
// Ingress deletes matter, service deletes don't.
}
lbc.svcLister.Store, lbc.svcController = framework.NewInformer(
cache.NewListWatchFromClient(
lbc.client, "services", namespace, fields.Everything()),
&api.Service{}, resyncPeriod, svcHandlers)
nodeHandlers := framework.ResourceEventHandlerFuncs{
AddFunc: lbc.nodeQueue.enqueue,
DeleteFunc: lbc.nodeQueue.enqueue,
// Nodes are updated every 10s and we don't care, so no update handler.
}
// Node watch handlers
lbc.nodeLister.Store, lbc.nodeController = framework.NewInformer(
&cache.ListWatch{
ListFunc: func() (runtime.Object, error) {
return lbc.client.Get().
Resource("nodes").
FieldsSelectorParam(fields.Everything()).
Do().
Get()
},
WatchFunc: func(options api.ListOptions) (watch.Interface, error) {
return lbc.client.Get().
Prefix("watch").
Resource("nodes").
FieldsSelectorParam(fields.Everything()).
Param("resourceVersion", options.ResourceVersion).Watch()
},
},
&api.Node{}, 0, nodeHandlers)
lbc.tr = &gceTranslator{&lbc}
glog.Infof("Created new loadbalancer controller")
return &lbc, nil
}
