// Stop scales a replication controller via its deployment configuration down to
// zero replicas, waits for all of them to get deleted and then deletes both the
// replication controller and its deployment configuration.
func (reaper *DeploymentConfigReaper) Stop(namespace, name string, gracePeriod *kapi.DeleteOptions) (string, error) {
// If the config is already deleted, it may still have associated
// deployments which didn't get cleaned up during prior calls to Stop. If
// the config can't be found, still make an attempt to clean up the
// deployments.
//
// It's important to delete the config first to avoid an undesirable side
// effect which can cause the deployment to be re-triggered upon the
// config's deletion. See https://github.com/projectatomic/atomic-enterprise/issues/2721
// for more details.
err := reaper.oc.DeploymentConfigs(namespace).Delete(name)
configNotFound := kerrors.IsNotFound(err)
if err != nil && !configNotFound {
return "", err
}
// Clean up deployments related to the config.
rcList, err := reaper.kc.ReplicationControllers(namespace).List(util.ConfigSelector(name))
if err != nil {
return "", err
}
rcReaper, err := kubectl.ReaperFor("ReplicationController", reaper.kc)
if err != nil {
return "", err
}
// If there is neither a config nor any deployments, we can return NotFound.
deployments := rcList.Items
if configNotFound && len(deployments) == 0 {
return "", kerrors.NewNotFound("DeploymentConfig", name)
}
for _, rc := range deployments {
if _, err = rcReaper.Stop(rc.Namespace, rc.Name, gracePeriod); err != nil {
// Better not error out here...
glog.Infof("Cannot delete ReplicationController %s/%s: %v", rc.Namespace, rc.Name, err)
}
}
return fmt.Sprintf("%s stopped", name), nil
}
// NewDeployer makes a new Deployer from a kube client.
func NewDeployer(client kclient.Interface) *Deployer {
scaler, _ := kubectl.ScalerFor("ReplicationController", kubectl.NewScalerClient(client))
return &Deployer{
getDeployment: func(namespace, name string) (*kapi.ReplicationController, error) {
return client.ReplicationControllers(namespace).Get(name)
},
getDeployments: func(namespace, configName string) (*kapi.ReplicationControllerList, error) {
return client.ReplicationControllers(namespace).List(deployutil.ConfigSelector(configName))
},
scaler: scaler,
strategyFor: func(config *deployapi.DeploymentConfig) (strategy.DeploymentStrategy, error) {
switch config.Template.Strategy.Type {
case deployapi.DeploymentStrategyTypeRecreate:
return recreate.NewRecreateDeploymentStrategy(client, latest.Codec), nil
case deployapi.DeploymentStrategyTypeRolling:
recreate := recreate.NewRecreateDeploymentStrategy(client, latest.Codec)
return rolling.NewRollingDeploymentStrategy(config.Namespace, client, latest.Codec, recreate), nil
default:
return nil, fmt.Errorf("unsupported strategy type: %s", config.Template.Strategy.Type)
}
},
}
}
// Create creates a DeploymentConfigController.
func (factory *DeploymentConfigControllerFactory) Create() controller.RunnableController {
deploymentConfigLW := &deployutil.ListWatcherImpl{
ListFunc: func() (runtime.Object, error) {
return factory.Client.DeploymentConfigs(kapi.NamespaceAll).List(labels.Everything(), fields.Everything())
},
WatchFunc: func(resourceVersion string) (watch.Interface, error) {
return factory.Client.DeploymentConfigs(kapi.NamespaceAll).Watch(labels.Everything(), fields.Everything(), resourceVersion)
},
}
queue := cache.NewFIFO(cache.MetaNamespaceKeyFunc)
cache.NewReflector(deploymentConfigLW, &deployapi.DeploymentConfig{}, queue, 2*time.Minute).Run()
eventBroadcaster := record.NewBroadcaster()
eventBroadcaster.StartRecordingToSink(factory.KubeClient.Events(""))
configController := &DeploymentConfigController{
deploymentClient: &deploymentClientImpl{
createDeploymentFunc: func(namespace string, deployment *kapi.ReplicationController) (*kapi.ReplicationController, error) {
return factory.KubeClient.ReplicationControllers(namespace).Create(deployment)
},
listDeploymentsForConfigFunc: func(namespace, configName string) (*kapi.ReplicationControllerList, error) {
sel := deployutil.ConfigSelector(configName)
list, err := factory.KubeClient.ReplicationControllers(namespace).List(sel)
if err != nil {
return nil, err
}
return list, nil
},
updateDeploymentFunc: func(namespace string, deployment *kapi.ReplicationController) (*kapi.ReplicationController, error) {
return factory.KubeClient.ReplicationControllers(namespace).Update(deployment)
},
},
makeDeployment: func(config *deployapi.DeploymentConfig) (*kapi.ReplicationController, error) {
return deployutil.MakeDeployment(config, factory.Codec)
},
recorder: eventBroadcaster.NewRecorder(kapi.EventSource{Component: "deployer"}),
}
return &controller.RetryController{
Queue: queue,
RetryManager: controller.NewQueueRetryManager(
queue,
cache.MetaNamespaceKeyFunc,
func(obj interface{}, err error, retries controller.Retry) bool {
kutil.HandleError(err)
// no retries for a fatal error
if _, isFatal := err.(fatalError); isFatal {
return false
}
// infinite retries for a transient error
if _, isTransient := err.(transientError); isTransient {
return true
}
// no retries for anything else
if retries.Count > 0 {
return false
}
return true
},
kutil.NewTokenBucketRateLimiter(1, 10),
),
Handle: func(obj interface{}) error {
config := obj.(*deployapi.DeploymentConfig)
return configController.Handle(config)
},
}
}
// Create creates a DeployerPodController.
func (factory *DeployerPodControllerFactory) Create() controller.RunnableController {
deploymentLW := &deployutil.ListWatcherImpl{
ListFunc: func() (runtime.Object, error) {
return factory.KubeClient.ReplicationControllers(kapi.NamespaceAll).List(labels.Everything())
},
WatchFunc: func(resourceVersion string) (watch.Interface, error) {
return factory.KubeClient.ReplicationControllers(kapi.NamespaceAll).Watch(labels.Everything(), fields.Everything(), resourceVersion)
},
}
deploymentStore := cache.NewStore(cache.MetaNamespaceKeyFunc)
cache.NewReflector(deploymentLW, &kapi.ReplicationController{}, deploymentStore, 2*time.Minute).Run()
// TODO: These should be filtered somehow to include only the primary
// deployer pod. For now, the controller is filtering.
// TODO: Even with the label selector, this is inefficient on the backend
// and we should work to consolidate namespace-spanning pod watches. For
// example, the build infra is also watching pods across namespaces.
podLW := &deployutil.ListWatcherImpl{
ListFunc: func() (runtime.Object, error) {
return factory.KubeClient.Pods(kapi.NamespaceAll).List(deployutil.AnyDeployerPodSelector(), fields.Everything())
},
WatchFunc: func(resourceVersion string) (watch.Interface, error) {
return factory.KubeClient.Pods(kapi.NamespaceAll).Watch(deployutil.AnyDeployerPodSelector(), fields.Everything(), resourceVersion)
},
}
podQueue := cache.NewFIFO(cache.MetaNamespaceKeyFunc)
cache.NewReflector(podLW, &kapi.Pod{}, podQueue, 2*time.Minute).Run()
podController := &DeployerPodController{
deploymentClient: &deploymentClientImpl{
getDeploymentFunc: func(namespace, name string) (*kapi.ReplicationController, error) {
// Try to use the cache first. Trust hits and return them.
example := &kapi.ReplicationController{ObjectMeta: kapi.ObjectMeta{Namespace: namespace, Name: name}}
cached, exists, err := deploymentStore.Get(example)
if err == nil && exists {
return cached.(*kapi.ReplicationController), nil
}
// Double-check with the master for cache misses/errors, since those
// are rare and API calls are expensive but more reliable.
return factory.KubeClient.ReplicationControllers(namespace).Get(name)
},
updateDeploymentFunc: func(namespace string, deployment *kapi.ReplicationController) (*kapi.ReplicationController, error) {
return factory.KubeClient.ReplicationControllers(namespace).Update(deployment)
},
listDeploymentsForConfigFunc: func(namespace, configName string) (*kapi.ReplicationControllerList, error) {
return factory.KubeClient.ReplicationControllers(namespace).List(deployutil.ConfigSelector(configName))
},
},
deployerPodsFor: func(namespace, name string) (*kapi.PodList, error) {
return factory.KubeClient.Pods(namespace).List(deployutil.DeployerPodSelector(name), fields.Everything())
},
deletePod: func(namespace, name string) error {
return factory.KubeClient.Pods(namespace).Delete(name, kapi.NewDeleteOptions(0))
},
}
return &controller.RetryController{
Queue: podQueue,
RetryManager: controller.NewQueueRetryManager(
podQueue,
cache.MetaNamespaceKeyFunc,
func(obj interface{}, err error, retries controller.Retry) bool {
kutil.HandleError(err)
// infinite retries for a transient error
if _, isTransient := err.(transientError); isTransient {
return true
}
// no retries for anything else
if retries.Count > 0 {
return false
}
return true
},
kutil.NewTokenBucketRateLimiter(1, 10),
),
Handle: func(obj interface{}) error {
pod := obj.(*kapi.Pod)
return podController.Handle(pod)
},
}
}
func (o DeployOptions) RunDeploy() error {
config, err := o.osClient.DeploymentConfigs(o.namespace).Get(o.deploymentConfigName)
if err != nil {
return err
}
commandClient := &deployCommandClientImpl{
GetDeploymentFn: func(namespace, name string) (*kapi.ReplicationController, error) {
return o.kubeClient.ReplicationControllers(namespace).Get(name)
},
ListDeploymentsForConfigFn: func(namespace, configName string) (*kapi.ReplicationControllerList, error) {
list, err := o.kubeClient.ReplicationControllers(namespace).List(deployutil.ConfigSelector(configName))
if err != nil {
return nil, err
}
return list, nil
},
UpdateDeploymentConfigFn: func(config *deployapi.DeploymentConfig) (*deployapi.DeploymentConfig, error) {
return o.osClient.DeploymentConfigs(config.Namespace).Update(config)
},
UpdateDeploymentFn: func(deployment *kapi.ReplicationController) (*kapi.ReplicationController, error) {
return o.kubeClient.ReplicationControllers(deployment.Namespace).Update(deployment)
},
ListDeployerPodsForFn: func(namespace, deploymentName string) (*kapi.PodList, error) {
selector, err := labels.Parse(fmt.Sprintf("%s=%s", deployapi.DeployerPodForDeploymentLabel, deploymentName))
if err != nil {
return nil, err
}
return o.kubeClient.Pods(namespace).List(selector, fields.Everything())
},
DeletePodFn: func(pod *kapi.Pod) error {
return o.kubeClient.Pods(pod.Namespace).Delete(pod.Name, nil)
},
}
switch {
case o.deployLatest:
c := &deployLatestCommand{client: commandClient}
err = c.deploy(config, o.out)
case o.retryDeploy:
c := &retryDeploymentCommand{client: commandClient}
err = c.retry(config, o.out)
case o.cancelDeploy:
c := &cancelDeploymentCommand{client: commandClient}
err = c.cancel(config, o.out)
case o.enableTriggers:
t := &triggerEnabler{
updateConfig: func(namespace string, config *deployapi.DeploymentConfig) (*deployapi.DeploymentConfig, error) {
return o.osClient.DeploymentConfigs(namespace).Update(config)
},
}
t.enableTriggers(config, o.out)
default:
describer := describe.NewLatestDeploymentsDescriber(o.osClient, o.kubeClient, -1)
desc, err := describer.Describe(config.Namespace, config.Name)
if err != nil {
return err
}
fmt.Fprintln(o.out, desc)
}
return err
}