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vendor cleanup: remove unused,non-go and test files

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This commit is contained in:
Madhu Rajanna
2019-01-16 00:05:52 +05:30
parent 52cf4aa902
commit b10ba188e7
15421 changed files with 17 additions and 4208853 deletions
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105
vendor/k8s.io/kubernetes/pkg/controller/deployment/BUILD generated vendored
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@ -1,105 +0,0 @@
package(default_visibility = ["//visibility:public"])
load(
"@io_bazel_rules_go//go:def.bzl",
"go_library",
"go_test",
)
go_library(
name = "go_default_library",
srcs = [
"deployment_controller.go",
"progress.go",
"recreate.go",
"rollback.go",
"rolling.go",
"sync.go",
],
importpath = "k8s.io/kubernetes/pkg/controller/deployment",
deps = [
"//pkg/controller:go_default_library",
"//pkg/controller/deployment/util:go_default_library",
"//pkg/util/labels:go_default_library",
"//pkg/util/metrics:go_default_library",
"//vendor/github.com/golang/glog:go_default_library",
"//vendor/k8s.io/api/apps/v1:go_default_library",
"//vendor/k8s.io/api/core/v1:go_default_library",
"//vendor/k8s.io/api/extensions/v1beta1:go_default_library",
"//vendor/k8s.io/apimachinery/pkg/api/errors:go_default_library",
"//vendor/k8s.io/apimachinery/pkg/apis/meta/v1:go_default_library",
"//vendor/k8s.io/apimachinery/pkg/labels:go_default_library",
"//vendor/k8s.io/apimachinery/pkg/types:go_default_library",
"//vendor/k8s.io/apimachinery/pkg/util/rand:go_default_library",
"//vendor/k8s.io/apimachinery/pkg/util/runtime:go_default_library",
"//vendor/k8s.io/apimachinery/pkg/util/wait:go_default_library",
"//vendor/k8s.io/client-go/informers/apps/v1:go_default_library",
"//vendor/k8s.io/client-go/informers/core/v1:go_default_library",
"//vendor/k8s.io/client-go/kubernetes:go_default_library",
"//vendor/k8s.io/client-go/kubernetes/scheme:go_default_library",
"//vendor/k8s.io/client-go/kubernetes/typed/core/v1:go_default_library",
"//vendor/k8s.io/client-go/listers/apps/v1:go_default_library",
"//vendor/k8s.io/client-go/listers/core/v1:go_default_library",
"//vendor/k8s.io/client-go/tools/cache:go_default_library",
"//vendor/k8s.io/client-go/tools/record:go_default_library",
"//vendor/k8s.io/client-go/util/integer:go_default_library",
"//vendor/k8s.io/client-go/util/workqueue:go_default_library",
],
)
go_test(
name = "go_default_test",
srcs = [
"deployment_controller_test.go",
"progress_test.go",
"recreate_test.go",
"rolling_test.go",
"sync_test.go",
],
embed = [":go_default_library"],
deps = [
"//pkg/apis/apps/install:go_default_library",
"//pkg/apis/authentication/install:go_default_library",
"//pkg/apis/authorization/install:go_default_library",
"//pkg/apis/autoscaling/install:go_default_library",
"//pkg/apis/batch/install:go_default_library",
"//pkg/apis/certificates/install:go_default_library",
"//pkg/apis/core/install:go_default_library",
"//pkg/apis/policy/install:go_default_library",
"//pkg/apis/rbac/install:go_default_library",
"//pkg/apis/settings/install:go_default_library",
"//pkg/apis/storage/install:go_default_library",
"//pkg/controller:go_default_library",
"//pkg/controller/deployment/util:go_default_library",
"//vendor/k8s.io/api/apps/v1:go_default_library",
"//vendor/k8s.io/api/core/v1:go_default_library",
"//vendor/k8s.io/api/extensions/v1beta1:go_default_library",
"//vendor/k8s.io/apimachinery/pkg/apis/meta/v1: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/types:go_default_library",
"//vendor/k8s.io/apimachinery/pkg/util/intstr:go_default_library",
"//vendor/k8s.io/apimachinery/pkg/util/uuid:go_default_library",
"//vendor/k8s.io/client-go/informers:go_default_library",
"//vendor/k8s.io/client-go/kubernetes/fake:go_default_library",
"//vendor/k8s.io/client-go/testing:go_default_library",
"//vendor/k8s.io/client-go/tools/record:go_default_library",
"//vendor/k8s.io/client-go/util/workqueue:go_default_library",
],
)
filegroup(
name = "package-srcs",
srcs = glob(["**"]),
tags = ["automanaged"],
visibility = ["//visibility:private"],
)
filegroup(
name = "all-srcs",
srcs = [
":package-srcs",
"//pkg/controller/deployment/util:all-srcs",
],
tags = ["automanaged"],
)

11
vendor/k8s.io/kubernetes/pkg/controller/deployment/OWNERS generated vendored
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@ -1,11 +0,0 @@
approvers:
- janetkuo
- nikhiljindal
- kargakis
- mfojtik
reviewers:
- janetkuo
- nikhiljindal
- kargakis
- mfojtik
- tnozicka

647
vendor/k8s.io/kubernetes/pkg/controller/deployment/deployment_controller.go generated vendored
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@ -1,647 +0,0 @@
/*
Copyright 2015 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 deployment contains all the logic for handling Kubernetes Deployments.
// It implements a set of strategies (rolling, recreate) for deploying an application,
// the means to rollback to previous versions, proportional scaling for mitigating
// risk, cleanup policy, and other useful features of Deployments.
package deployment
import (
"fmt"
"reflect"
"time"
"github.com/golang/glog"
apps "k8s.io/api/apps/v1"
"k8s.io/api/core/v1"
"k8s.io/apimachinery/pkg/api/errors"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/labels"
"k8s.io/apimachinery/pkg/types"
utilruntime "k8s.io/apimachinery/pkg/util/runtime"
"k8s.io/apimachinery/pkg/util/wait"
appsinformers "k8s.io/client-go/informers/apps/v1"
coreinformers "k8s.io/client-go/informers/core/v1"
clientset "k8s.io/client-go/kubernetes"
"k8s.io/client-go/kubernetes/scheme"
v1core "k8s.io/client-go/kubernetes/typed/core/v1"
appslisters "k8s.io/client-go/listers/apps/v1"
corelisters "k8s.io/client-go/listers/core/v1"
"k8s.io/client-go/tools/cache"
"k8s.io/client-go/tools/record"
"k8s.io/client-go/util/workqueue"
"k8s.io/kubernetes/pkg/controller"
"k8s.io/kubernetes/pkg/controller/deployment/util"
"k8s.io/kubernetes/pkg/util/metrics"
)
const (
// maxRetries is the number of times a deployment will be retried before it is dropped out of the queue.
// With the current rate-limiter in use (5ms*2^(maxRetries-1)) the following numbers represent the times
// a deployment is going to be requeued:
//
// 5ms, 10ms, 20ms, 40ms, 80ms, 160ms, 320ms, 640ms, 1.3s, 2.6s, 5.1s, 10.2s, 20.4s, 41s, 82s
maxRetries = 15
)
// controllerKind contains the schema.GroupVersionKind for this controller type.
var controllerKind = apps.SchemeGroupVersion.WithKind("Deployment")
// DeploymentController is responsible for synchronizing Deployment objects stored
// in the system with actual running replica sets and pods.
type DeploymentController struct {
// rsControl is used for adopting/releasing replica sets.
rsControl controller.RSControlInterface
client clientset.Interface
eventRecorder record.EventRecorder
// To allow injection of syncDeployment for testing.
syncHandler func(dKey string) error
// used for unit testing
enqueueDeployment func(deployment *apps.Deployment)
// dLister can list/get deployments from the shared informer's store
dLister appslisters.DeploymentLister
// rsLister can list/get replica sets from the shared informer's store
rsLister appslisters.ReplicaSetLister
// podLister can list/get pods from the shared informer's store
podLister corelisters.PodLister
// dListerSynced returns true if the Deployment store has been synced at least once.
// Added as a member to the struct to allow injection for testing.
dListerSynced cache.InformerSynced
// rsListerSynced returns true if the ReplicaSet store has been synced at least once.
// Added as a member to the struct to allow injection for testing.
rsListerSynced cache.InformerSynced
// podListerSynced returns true if the pod store has been synced at least once.
// Added as a member to the struct to allow injection for testing.
podListerSynced cache.InformerSynced
// Deployments that need to be synced
queue workqueue.RateLimitingInterface
}
// NewDeploymentController creates a new DeploymentController.
func NewDeploymentController(dInformer appsinformers.DeploymentInformer, rsInformer appsinformers.ReplicaSetInformer, podInformer coreinformers.PodInformer, client clientset.Interface) (*DeploymentController, error) {
eventBroadcaster := record.NewBroadcaster()
eventBroadcaster.StartLogging(glog.Infof)
eventBroadcaster.StartRecordingToSink(&v1core.EventSinkImpl{Interface: client.CoreV1().Events("")})
if client != nil && client.CoreV1().RESTClient().GetRateLimiter() != nil {
if err := metrics.RegisterMetricAndTrackRateLimiterUsage("deployment_controller", client.CoreV1().RESTClient().GetRateLimiter()); err != nil {
return nil, err
}
}
dc := &DeploymentController{
client: client,
eventRecorder: eventBroadcaster.NewRecorder(scheme.Scheme, v1.EventSource{Component: "deployment-controller"}),
queue: workqueue.NewNamedRateLimitingQueue(workqueue.DefaultControllerRateLimiter(), "deployment"),
}
dc.rsControl = controller.RealRSControl{
KubeClient: client,
Recorder: dc.eventRecorder,
}
dInformer.Informer().AddEventHandler(cache.ResourceEventHandlerFuncs{
AddFunc: dc.addDeployment,
UpdateFunc: dc.updateDeployment,
// This will enter the sync loop and no-op, because the deployment has been deleted from the store.
DeleteFunc: dc.deleteDeployment,
})
rsInformer.Informer().AddEventHandler(cache.ResourceEventHandlerFuncs{
AddFunc: dc.addReplicaSet,
UpdateFunc: dc.updateReplicaSet,
DeleteFunc: dc.deleteReplicaSet,
})
podInformer.Informer().AddEventHandler(cache.ResourceEventHandlerFuncs{
DeleteFunc: dc.deletePod,
})
dc.syncHandler = dc.syncDeployment
dc.enqueueDeployment = dc.enqueue
dc.dLister = dInformer.Lister()
dc.rsLister = rsInformer.Lister()
dc.podLister = podInformer.Lister()
dc.dListerSynced = dInformer.Informer().HasSynced
dc.rsListerSynced = rsInformer.Informer().HasSynced
dc.podListerSynced = podInformer.Informer().HasSynced
return dc, nil
}
// Run begins watching and syncing.
func (dc *DeploymentController) Run(workers int, stopCh <-chan struct{}) {
defer utilruntime.HandleCrash()
defer dc.queue.ShutDown()
glog.Infof("Starting deployment controller")
defer glog.Infof("Shutting down deployment controller")
if !controller.WaitForCacheSync("deployment", stopCh, dc.dListerSynced, dc.rsListerSynced, dc.podListerSynced) {
return
}
for i := 0; i < workers; i++ {
go wait.Until(dc.worker, time.Second, stopCh)
}
<-stopCh
}
func (dc *DeploymentController) addDeployment(obj interface{}) {
d := obj.(*apps.Deployment)
glog.V(4).Infof("Adding deployment %s", d.Name)
dc.enqueueDeployment(d)
}
func (dc *DeploymentController) updateDeployment(old, cur interface{}) {
oldD := old.(*apps.Deployment)
curD := cur.(*apps.Deployment)
glog.V(4).Infof("Updating deployment %s", oldD.Name)
dc.enqueueDeployment(curD)
}
func (dc *DeploymentController) deleteDeployment(obj interface{}) {
d, ok := obj.(*apps.Deployment)
if !ok {
tombstone, ok := obj.(cache.DeletedFinalStateUnknown)
if !ok {
utilruntime.HandleError(fmt.Errorf("Couldn't get object from tombstone %#v", obj))
return
}
d, ok = tombstone.Obj.(*apps.Deployment)
if !ok {
utilruntime.HandleError(fmt.Errorf("Tombstone contained object that is not a Deployment %#v", obj))
return
}
}
glog.V(4).Infof("Deleting deployment %s", d.Name)
dc.enqueueDeployment(d)
}
// addReplicaSet enqueues the deployment that manages a ReplicaSet when the ReplicaSet is created.
func (dc *DeploymentController) addReplicaSet(obj interface{}) {
rs := obj.(*apps.ReplicaSet)
if rs.DeletionTimestamp != nil {
// On a restart of the controller manager, it's possible for an object to
// show up in a state that is already pending deletion.
dc.deleteReplicaSet(rs)
return
}
// If it has a ControllerRef, that's all that matters.
if controllerRef := metav1.GetControllerOf(rs); controllerRef != nil {
d := dc.resolveControllerRef(rs.Namespace, controllerRef)
if d == nil {
return
}
glog.V(4).Infof("ReplicaSet %s added.", rs.Name)
dc.enqueueDeployment(d)
return
}
// Otherwise, it's an orphan. Get a list of all matching Deployments and sync
// them to see if anyone wants to adopt it.
ds := dc.getDeploymentsForReplicaSet(rs)
if len(ds) == 0 {
return
}
glog.V(4).Infof("Orphan ReplicaSet %s added.", rs.Name)
for _, d := range ds {
dc.enqueueDeployment(d)
}
}
// getDeploymentsForReplicaSet returns a list of Deployments that potentially
// match a ReplicaSet.
func (dc *DeploymentController) getDeploymentsForReplicaSet(rs *apps.ReplicaSet) []*apps.Deployment {
deployments, err := dc.dLister.GetDeploymentsForReplicaSet(rs)
if err != nil || len(deployments) == 0 {
return nil
}
// Because all ReplicaSet's belonging to a deployment should have a unique label key,
// there should never be more than one deployment returned by the above method.
// If that happens we should probably dynamically repair the situation by ultimately
// trying to clean up one of the controllers, for now we just return the older one
if len(deployments) > 1 {
// ControllerRef will ensure we don't do anything crazy, but more than one
// item in this list nevertheless constitutes user error.
glog.V(4).Infof("user error! more than one deployment is selecting replica set %s/%s with labels: %#v, returning %s/%s",
rs.Namespace, rs.Name, rs.Labels, deployments[0].Namespace, deployments[0].Name)
}
return deployments
}
// updateReplicaSet figures out what deployment(s) manage a ReplicaSet when the ReplicaSet
// is updated and wake them up. If the anything of the ReplicaSets have changed, we need to
// awaken both the old and new deployments. old and cur must be *apps.ReplicaSet
// types.
func (dc *DeploymentController) updateReplicaSet(old, cur interface{}) {
curRS := cur.(*apps.ReplicaSet)
oldRS := old.(*apps.ReplicaSet)
if curRS.ResourceVersion == oldRS.ResourceVersion {
// Periodic resync will send update events for all known replica sets.
// Two different versions of the same replica set will always have different RVs.
return
}
curControllerRef := metav1.GetControllerOf(curRS)
oldControllerRef := metav1.GetControllerOf(oldRS)
controllerRefChanged := !reflect.DeepEqual(curControllerRef, oldControllerRef)
if controllerRefChanged && oldControllerRef != nil {
// The ControllerRef was changed. Sync the old controller, if any.
if d := dc.resolveControllerRef(oldRS.Namespace, oldControllerRef); d != nil {
dc.enqueueDeployment(d)
}
}
// If it has a ControllerRef, that's all that matters.
if curControllerRef != nil {
d := dc.resolveControllerRef(curRS.Namespace, curControllerRef)
if d == nil {
return
}
glog.V(4).Infof("ReplicaSet %s updated.", curRS.Name)
dc.enqueueDeployment(d)
return
}
// Otherwise, it's an orphan. If anything changed, sync matching controllers
// to see if anyone wants to adopt it now.
labelChanged := !reflect.DeepEqual(curRS.Labels, oldRS.Labels)
if labelChanged || controllerRefChanged {
ds := dc.getDeploymentsForReplicaSet(curRS)
if len(ds) == 0 {
return
}
glog.V(4).Infof("Orphan ReplicaSet %s updated.", curRS.Name)
for _, d := range ds {
dc.enqueueDeployment(d)
}
}
}
// deleteReplicaSet enqueues the deployment that manages a ReplicaSet when
// the ReplicaSet is deleted. obj could be an *apps.ReplicaSet, or
// a DeletionFinalStateUnknown marker item.
func (dc *DeploymentController) deleteReplicaSet(obj interface{}) {
rs, ok := obj.(*apps.ReplicaSet)
// When a delete is dropped, the relist will notice a pod in the store not
// in the list, leading to the insertion of a tombstone object which contains
// the deleted key/value. Note that this value might be stale. If the ReplicaSet
// changed labels the new deployment will not be woken up till the periodic resync.
if !ok {
tombstone, ok := obj.(cache.DeletedFinalStateUnknown)
if !ok {
utilruntime.HandleError(fmt.Errorf("Couldn't get object from tombstone %#v", obj))
return
}
rs, ok = tombstone.Obj.(*apps.ReplicaSet)
if !ok {
utilruntime.HandleError(fmt.Errorf("Tombstone contained object that is not a ReplicaSet %#v", obj))
return
}
}
controllerRef := metav1.GetControllerOf(rs)
if controllerRef == nil {
// No controller should care about orphans being deleted.
return
}
d := dc.resolveControllerRef(rs.Namespace, controllerRef)
if d == nil {
return
}
glog.V(4).Infof("ReplicaSet %s deleted.", rs.Name)
dc.enqueueDeployment(d)
}
// deletePod will enqueue a Recreate Deployment once all of its pods have stopped running.
func (dc *DeploymentController) deletePod(obj interface{}) {
pod, ok := obj.(*v1.Pod)
// When a delete is dropped, the relist will notice a pod in the store not
// in the list, leading to the insertion of a tombstone object which contains
// the deleted key/value. Note that this value might be stale. If the Pod
// changed labels the new deployment will not be woken up till the periodic resync.
if !ok {
tombstone, ok := obj.(cache.DeletedFinalStateUnknown)
if !ok {
utilruntime.HandleError(fmt.Errorf("Couldn't get object from tombstone %#v", obj))
return
}
pod, ok = tombstone.Obj.(*v1.Pod)
if !ok {
utilruntime.HandleError(fmt.Errorf("Tombstone contained object that is not a pod %#v", obj))
return
}
}
glog.V(4).Infof("Pod %s deleted.", pod.Name)
if d := dc.getDeploymentForPod(pod); d != nil && d.Spec.Strategy.Type == apps.RecreateDeploymentStrategyType {
// Sync if this Deployment now has no more Pods.
rsList, err := util.ListReplicaSets(d, util.RsListFromClient(dc.client.AppsV1()))
if err != nil {
return
}
podMap, err := dc.getPodMapForDeployment(d, rsList)
if err != nil {
return
}
numPods := 0
for _, podList := range podMap {
numPods += len(podList.Items)
}
if numPods == 0 {
dc.enqueueDeployment(d)
}
}
}
func (dc *DeploymentController) enqueue(deployment *apps.Deployment) {
key, err := controller.KeyFunc(deployment)
if err != nil {
utilruntime.HandleError(fmt.Errorf("Couldn't get key for object %#v: %v", deployment, err))
return
}
dc.queue.Add(key)
}
func (dc *DeploymentController) enqueueRateLimited(deployment *apps.Deployment) {
key, err := controller.KeyFunc(deployment)
if err != nil {
utilruntime.HandleError(fmt.Errorf("Couldn't get key for object %#v: %v", deployment, err))
return
}
dc.queue.AddRateLimited(key)
}
// enqueueAfter will enqueue a deployment after the provided amount of time.
func (dc *DeploymentController) enqueueAfter(deployment *apps.Deployment, after time.Duration) {
key, err := controller.KeyFunc(deployment)
if err != nil {
utilruntime.HandleError(fmt.Errorf("Couldn't get key for object %#v: %v", deployment, err))
return
}
dc.queue.AddAfter(key, after)
}
// getDeploymentForPod returns the deployment managing the given Pod.
func (dc *DeploymentController) getDeploymentForPod(pod *v1.Pod) *apps.Deployment {
// Find the owning replica set
var rs *apps.ReplicaSet
var err error
controllerRef := metav1.GetControllerOf(pod)
if controllerRef == nil {
// No controller owns this Pod.
return nil
}
if controllerRef.Kind != apps.SchemeGroupVersion.WithKind("ReplicaSet").Kind {
// Not a pod owned by a replica set.
return nil
}
rs, err = dc.rsLister.ReplicaSets(pod.Namespace).Get(controllerRef.Name)
if err != nil || rs.UID != controllerRef.UID {
glog.V(4).Infof("Cannot get replicaset %q for pod %q: %v", controllerRef.Name, pod.Name, err)
return nil
}
// Now find the Deployment that owns that ReplicaSet.
controllerRef = metav1.GetControllerOf(rs)
if controllerRef == nil {
return nil
}
return dc.resolveControllerRef(rs.Namespace, controllerRef)
}
// resolveControllerRef returns the controller referenced by a ControllerRef,
// or nil if the ControllerRef could not be resolved to a matching controller
// of the correct Kind.
func (dc *DeploymentController) resolveControllerRef(namespace string, controllerRef *metav1.OwnerReference) *apps.Deployment {
// We can't look up by UID, so look up by Name and then verify UID.
// Don't even try to look up by Name if it's the wrong Kind.
if controllerRef.Kind != controllerKind.Kind {
return nil
}
d, err := dc.dLister.Deployments(namespace).Get(controllerRef.Name)
if err != nil {
return nil
}
if d.UID != controllerRef.UID {
// The controller we found with this Name is not the same one that the
// ControllerRef points to.
return nil
}
return d
}
// worker runs a worker thread that just dequeues items, processes them, and marks them done.
// It enforces that the syncHandler is never invoked concurrently with the same key.
func (dc *DeploymentController) worker() {
for dc.processNextWorkItem() {
}
}
func (dc *DeploymentController) processNextWorkItem() bool {
key, quit := dc.queue.Get()
if quit {
return false
}
defer dc.queue.Done(key)
err := dc.syncHandler(key.(string))
dc.handleErr(err, key)
return true
}
func (dc *DeploymentController) handleErr(err error, key interface{}) {
if err == nil {
dc.queue.Forget(key)
return
}
if dc.queue.NumRequeues(key) < maxRetries {
glog.V(2).Infof("Error syncing deployment %v: %v", key, err)
dc.queue.AddRateLimited(key)
return
}
utilruntime.HandleError(err)
glog.V(2).Infof("Dropping deployment %q out of the queue: %v", key, err)
dc.queue.Forget(key)
}
// getReplicaSetsForDeployment uses ControllerRefManager to reconcile
// ControllerRef by adopting and orphaning.
// It returns the list of ReplicaSets that this Deployment should manage.
func (dc *DeploymentController) getReplicaSetsForDeployment(d *apps.Deployment) ([]*apps.ReplicaSet, error) {
// List all ReplicaSets to find those we own but that no longer match our
// selector. They will be orphaned by ClaimReplicaSets().
rsList, err := dc.rsLister.ReplicaSets(d.Namespace).List(labels.Everything())
if err != nil {
return nil, err
}
deploymentSelector, err := metav1.LabelSelectorAsSelector(d.Spec.Selector)
if err != nil {
return nil, fmt.Errorf("deployment %s/%s has invalid label selector: %v", d.Namespace, d.Name, err)
}
// If any adoptions are attempted, we should first recheck for deletion with
// an uncached quorum read sometime after listing ReplicaSets (see #42639).
canAdoptFunc := controller.RecheckDeletionTimestamp(func() (metav1.Object, error) {
fresh, err := dc.client.AppsV1().Deployments(d.Namespace).Get(d.Name, metav1.GetOptions{})
if err != nil {
return nil, err
}
if fresh.UID != d.UID {
return nil, fmt.Errorf("original Deployment %v/%v is gone: got uid %v, wanted %v", d.Namespace, d.Name, fresh.UID, d.UID)
}
return fresh, nil
})
cm := controller.NewReplicaSetControllerRefManager(dc.rsControl, d, deploymentSelector, controllerKind, canAdoptFunc)
return cm.ClaimReplicaSets(rsList)
}
// getPodMapForDeployment returns the Pods managed by a Deployment.
//
// It returns a map from ReplicaSet UID to a list of Pods controlled by that RS,
// according to the Pod's ControllerRef.
func (dc *DeploymentController) getPodMapForDeployment(d *apps.Deployment, rsList []*apps.ReplicaSet) (map[types.UID]*v1.PodList, error) {
// Get all Pods that potentially belong to this Deployment.
selector, err := metav1.LabelSelectorAsSelector(d.Spec.Selector)
if err != nil {
return nil, err
}
pods, err := dc.podLister.Pods(d.Namespace).List(selector)
if err != nil {
return nil, err
}
// Group Pods by their controller (if it's in rsList).
podMap := make(map[types.UID]*v1.PodList, len(rsList))
for _, rs := range rsList {
podMap[rs.UID] = &v1.PodList{}
}
for _, pod := range pods {
// Do not ignore inactive Pods because Recreate Deployments need to verify that no
// Pods from older versions are running before spinning up new Pods.
controllerRef := metav1.GetControllerOf(pod)
if controllerRef == nil {
continue
}
// Only append if we care about this UID.
if podList, ok := podMap[controllerRef.UID]; ok {
podList.Items = append(podList.Items, *pod)
}
}
return podMap, nil
}
// syncDeployment will sync the deployment with the given key.
// This function is not meant to be invoked concurrently with the same key.
func (dc *DeploymentController) syncDeployment(key string) error {
startTime := time.Now()
glog.V(4).Infof("Started syncing deployment %q (%v)", key, startTime)
defer func() {
glog.V(4).Infof("Finished syncing deployment %q (%v)", key, time.Since(startTime))
}()
namespace, name, err := cache.SplitMetaNamespaceKey(key)
if err != nil {
return err
}
deployment, err := dc.dLister.Deployments(namespace).Get(name)
if errors.IsNotFound(err) {
glog.V(2).Infof("Deployment %v has been deleted", key)
return nil
}
if err != nil {
return err
}
// Deep-copy otherwise we are mutating our cache.
// TODO: Deep-copy only when needed.
d := deployment.DeepCopy()
everything := metav1.LabelSelector{}
if reflect.DeepEqual(d.Spec.Selector, &everything) {
dc.eventRecorder.Eventf(d, v1.EventTypeWarning, "SelectingAll", "This deployment is selecting all pods. A non-empty selector is required.")
if d.Status.ObservedGeneration < d.Generation {
d.Status.ObservedGeneration = d.Generation
dc.client.AppsV1().Deployments(d.Namespace).UpdateStatus(d)
}
return nil
}
// List ReplicaSets owned by this Deployment, while reconciling ControllerRef
// through adoption/orphaning.
rsList, err := dc.getReplicaSetsForDeployment(d)
if err != nil {
return err
}
// List all Pods owned by this Deployment, grouped by their ReplicaSet.
// Current uses of the podMap are:
//
// * check if a Pod is labeled correctly with the pod-template-hash label.
// * check that no old Pods are running in the middle of Recreate Deployments.
podMap, err := dc.getPodMapForDeployment(d, rsList)
if err != nil {
return err
}
if d.DeletionTimestamp != nil {
return dc.syncStatusOnly(d, rsList, podMap)
}
// Update deployment conditions with an Unknown condition when pausing/resuming
// a deployment. In this way, we can be sure that we won't timeout when a user
// resumes a Deployment with a set progressDeadlineSeconds.
if err = dc.checkPausedConditions(d); err != nil {
return err
}
if d.Spec.Paused {
return dc.sync(d, rsList, podMap)
}
// rollback is not re-entrant in case the underlying replica sets are updated with a new
// revision so we should ensure that we won't proceed to update replica sets until we
// make sure that the deployment has cleaned up its rollback spec in subsequent enqueues.
if getRollbackTo(d) != nil {
return dc.rollback(d, rsList, podMap)
}
scalingEvent, err := dc.isScalingEvent(d, rsList, podMap)
if err != nil {
return err
}
if scalingEvent {
return dc.sync(d, rsList, podMap)
}
switch d.Spec.Strategy.Type {
case apps.RecreateDeploymentStrategyType:
return dc.rolloutRecreate(d, rsList, podMap)
case apps.RollingUpdateDeploymentStrategyType:
return dc.rolloutRolling(d, rsList, podMap)
}
return fmt.Errorf("unexpected deployment strategy type: %s", d.Spec.Strategy.Type)
}

987
vendor/k8s.io/kubernetes/pkg/controller/deployment/deployment_controller_test.go generated vendored
View File

@ -1,987 +0,0 @@
/*
Copyright 2015 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 deployment
import (
"strconv"
"testing"
apps "k8s.io/api/apps/v1"
"k8s.io/api/core/v1"
extensions "k8s.io/api/extensions/v1beta1"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/runtime"
"k8s.io/apimachinery/pkg/runtime/schema"
"k8s.io/apimachinery/pkg/util/intstr"
"k8s.io/apimachinery/pkg/util/uuid"
"k8s.io/client-go/informers"
"k8s.io/client-go/kubernetes/fake"
core "k8s.io/client-go/testing"
"k8s.io/client-go/tools/record"
_ "k8s.io/kubernetes/pkg/apis/apps/install"
_ "k8s.io/kubernetes/pkg/apis/authentication/install"
_ "k8s.io/kubernetes/pkg/apis/authorization/install"
_ "k8s.io/kubernetes/pkg/apis/autoscaling/install"
_ "k8s.io/kubernetes/pkg/apis/batch/install"
_ "k8s.io/kubernetes/pkg/apis/certificates/install"
_ "k8s.io/kubernetes/pkg/apis/core/install"
_ "k8s.io/kubernetes/pkg/apis/policy/install"
_ "k8s.io/kubernetes/pkg/apis/rbac/install"
_ "k8s.io/kubernetes/pkg/apis/settings/install"
_ "k8s.io/kubernetes/pkg/apis/storage/install"
"k8s.io/kubernetes/pkg/controller"
"k8s.io/kubernetes/pkg/controller/deployment/util"
)
var (
alwaysReady = func() bool { return true }
noTimestamp = metav1.Time{}
)
func rs(name string, replicas int, selector map[string]string, timestamp metav1.Time) *apps.ReplicaSet {
return &apps.ReplicaSet{
ObjectMeta: metav1.ObjectMeta{
Name: name,
CreationTimestamp: timestamp,
Namespace: metav1.NamespaceDefault,
},
Spec: apps.ReplicaSetSpec{
Replicas: func() *int32 { i := int32(replicas); return &i }(),
Selector: &metav1.LabelSelector{MatchLabels: selector},
Template: v1.PodTemplateSpec{},
},
}
}
func newRSWithStatus(name string, specReplicas, statusReplicas int, selector map[string]string) *apps.ReplicaSet {
rs := rs(name, specReplicas, selector, noTimestamp)
rs.Status = apps.ReplicaSetStatus{
Replicas: int32(statusReplicas),
}
return rs
}
func newDeployment(name string, replicas int, revisionHistoryLimit *int32, maxSurge, maxUnavailable *intstr.IntOrString, selector map[string]string) *apps.Deployment {
d := apps.Deployment{
TypeMeta: metav1.TypeMeta{APIVersion: "apps/v1"},
ObjectMeta: metav1.ObjectMeta{
UID: uuid.NewUUID(),
Name: name,
Namespace: metav1.NamespaceDefault,
Annotations: make(map[string]string),
},
Spec: apps.DeploymentSpec{
Strategy: apps.DeploymentStrategy{
Type: apps.RollingUpdateDeploymentStrategyType,
RollingUpdate: &apps.RollingUpdateDeployment{
MaxUnavailable: func() *intstr.IntOrString { i := intstr.FromInt(0); return &i }(),
MaxSurge: func() *intstr.IntOrString { i := intstr.FromInt(0); return &i }(),
},
},
Replicas: func() *int32 { i := int32(replicas); return &i }(),
Selector: &metav1.LabelSelector{MatchLabels: selector},
Template: v1.PodTemplateSpec{
ObjectMeta: metav1.ObjectMeta{
Labels: selector,
},
Spec: v1.PodSpec{
Containers: []v1.Container{
{
Image: "foo/bar",
},
},
},
},
RevisionHistoryLimit: revisionHistoryLimit,
},
}
if maxSurge != nil {
d.Spec.Strategy.RollingUpdate.MaxSurge = maxSurge
}
if maxUnavailable != nil {
d.Spec.Strategy.RollingUpdate.MaxUnavailable = maxUnavailable
}
return &d
}
func newReplicaSet(d *apps.Deployment, name string, replicas int) *apps.ReplicaSet {
return &apps.ReplicaSet{
ObjectMeta: metav1.ObjectMeta{
Name: name,
UID: uuid.NewUUID(),
Namespace: metav1.NamespaceDefault,
Labels: d.Spec.Selector.MatchLabels,
OwnerReferences: []metav1.OwnerReference{*metav1.NewControllerRef(d, controllerKind)},
},
Spec: apps.ReplicaSetSpec{
Selector: d.Spec.Selector,
Replicas: func() *int32 { i := int32(replicas); return &i }(),
Template: d.Spec.Template,
},
}
}
func getKey(d *apps.Deployment, t *testing.T) string {
if key, err := controller.KeyFunc(d); err != nil {
t.Errorf("Unexpected error getting key for deployment %v: %v", d.Name, err)
return ""
} else {
return key
}
}
type fixture struct {
t *testing.T
client *fake.Clientset
// Objects to put in the store.
dLister []*apps.Deployment
rsLister []*apps.ReplicaSet
podLister []*v1.Pod
// Actions expected to happen on the client. Objects from here are also
// preloaded into NewSimpleFake.
actions []core.Action
objects []runtime.Object
}
func (f *fixture) expectGetDeploymentAction(d *apps.Deployment) {
action := core.NewGetAction(schema.GroupVersionResource{Resource: "deployments"}, d.Namespace, d.Name)
f.actions = append(f.actions, action)
}
func (f *fixture) expectUpdateDeploymentStatusAction(d *apps.Deployment) {
action := core.NewUpdateAction(schema.GroupVersionResource{Resource: "deployments"}, d.Namespace, d)
action.Subresource = "status"
f.actions = append(f.actions, action)
}
func (f *fixture) expectUpdateDeploymentAction(d *apps.Deployment) {
action := core.NewUpdateAction(schema.GroupVersionResource{Resource: "deployments"}, d.Namespace, d)
f.actions = append(f.actions, action)
}
func (f *fixture) expectCreateRSAction(rs *apps.ReplicaSet) {
f.actions = append(f.actions, core.NewCreateAction(schema.GroupVersionResource{Resource: "replicasets"}, rs.Namespace, rs))
}
func newFixture(t *testing.T) *fixture {
f := &fixture{}
f.t = t
f.objects = []runtime.Object{}
return f
}
func (f *fixture) newController() (*DeploymentController, informers.SharedInformerFactory, error) {
f.client = fake.NewSimpleClientset(f.objects...)
informers := informers.NewSharedInformerFactory(f.client, controller.NoResyncPeriodFunc())
c, err := NewDeploymentController(informers.Apps().V1().Deployments(), informers.Apps().V1().ReplicaSets(), informers.Core().V1().Pods(), f.client)
if err != nil {
return nil, nil, err
}
c.eventRecorder = &record.FakeRecorder{}
c.dListerSynced = alwaysReady
c.rsListerSynced = alwaysReady
c.podListerSynced = alwaysReady
for _, d := range f.dLister {
informers.Apps().V1().Deployments().Informer().GetIndexer().Add(d)
}
for _, rs := range f.rsLister {
informers.Apps().V1().ReplicaSets().Informer().GetIndexer().Add(rs)
}
for _, pod := range f.podLister {
informers.Core().V1().Pods().Informer().GetIndexer().Add(pod)
}
return c, informers, nil
}
func (f *fixture) runExpectError(deploymentName string, startInformers bool) {
f.run_(deploymentName, startInformers, true)
}
func (f *fixture) run(deploymentName string) {
f.run_(deploymentName, true, false)
}
func (f *fixture) run_(deploymentName string, startInformers bool, expectError bool) {
c, informers, err := f.newController()
if err != nil {
f.t.Fatalf("error creating Deployment controller: %v", err)
}
if startInformers {
stopCh := make(chan struct{})
defer close(stopCh)
informers.Start(stopCh)
}
err = c.syncDeployment(deploymentName)
if !expectError && err != nil {
f.t.Errorf("error syncing deployment: %v", err)
} else if expectError && err == nil {
f.t.Error("expected error syncing deployment, got nil")
}
actions := filterInformerActions(f.client.Actions())
for i, action := range actions {
if len(f.actions) < i+1 {
f.t.Errorf("%d unexpected actions: %+v", len(actions)-len(f.actions), actions[i:])
break
}
expectedAction := f.actions[i]
if !(expectedAction.Matches(action.GetVerb(), action.GetResource().Resource) && action.GetSubresource() == expectedAction.GetSubresource()) {
f.t.Errorf("Expected\n\t%#v\ngot\n\t%#v", expectedAction, action)
continue
}
}
if len(f.actions) > len(actions) {
f.t.Errorf("%d additional expected actions:%+v", len(f.actions)-len(actions), f.actions[len(actions):])
}
}
func filterInformerActions(actions []core.Action) []core.Action {
ret := []core.Action{}
for _, action := range actions {
if len(action.GetNamespace()) == 0 &&
(action.Matches("list", "pods") ||
action.Matches("list", "deployments") ||
action.Matches("list", "replicasets") ||
action.Matches("watch", "pods") ||
action.Matches("watch", "deployments") ||
action.Matches("watch", "replicasets")) {
continue
}
ret = append(ret, action)
}
return ret
}
func TestSyncDeploymentCreatesReplicaSet(t *testing.T) {
f := newFixture(t)
d := newDeployment("foo", 1, nil, nil, nil, map[string]string{"foo": "bar"})
f.dLister = append(f.dLister, d)
f.objects = append(f.objects, d)
rs := newReplicaSet(d, "deploymentrs-4186632231", 1)
f.expectCreateRSAction(rs)
f.expectUpdateDeploymentStatusAction(d)
f.expectUpdateDeploymentStatusAction(d)
f.run(getKey(d, t))
}
func TestSyncDeploymentDontDoAnythingDuringDeletion(t *testing.T) {
f := newFixture(t)
d := newDeployment("foo", 1, nil, nil, nil, map[string]string{"foo": "bar"})
now := metav1.Now()
d.DeletionTimestamp = &now
f.dLister = append(f.dLister, d)
f.objects = append(f.objects, d)
f.expectUpdateDeploymentStatusAction(d)
f.run(getKey(d, t))
}
func TestSyncDeploymentDeletionRace(t *testing.T) {
f := newFixture(t)
d := newDeployment("foo", 1, nil, nil, nil, map[string]string{"foo": "bar"})
d2 := *d
// Lister (cache) says NOT deleted.
f.dLister = append(f.dLister, d)
// Bare client says it IS deleted. This should be presumed more up-to-date.
now := metav1.Now()
d2.DeletionTimestamp = &now
f.objects = append(f.objects, &d2)
// The recheck is only triggered if a matching orphan exists.
rs := newReplicaSet(d, "rs1", 1)
rs.OwnerReferences = nil
f.objects = append(f.objects, rs)
f.rsLister = append(f.rsLister, rs)
// Expect to only recheck DeletionTimestamp.
f.expectGetDeploymentAction(d)
// Sync should fail and requeue to let cache catch up.
// Don't start informers, since we don't want cache to catch up for this test.
f.runExpectError(getKey(d, t), false)
}
// issue: https://github.com/kubernetes/kubernetes/issues/23218
func TestDontSyncDeploymentsWithEmptyPodSelector(t *testing.T) {
f := newFixture(t)
d := newDeployment("foo", 1, nil, nil, nil, map[string]string{"foo": "bar"})
d.Spec.Selector = &metav1.LabelSelector{}
f.dLister = append(f.dLister, d)
f.objects = append(f.objects, d)
// Normally there should be a status update to sync observedGeneration but the fake
// deployment has no generation set so there is no action happpening here.
f.run(getKey(d, t))
}
func TestReentrantRollback(t *testing.T) {
f := newFixture(t)
d := newDeployment("foo", 1, nil, nil, nil, map[string]string{"foo": "bar"})
d.Annotations = map[string]string{util.RevisionAnnotation: "2"}
setRollbackTo(d, &extensions.RollbackConfig{Revision: 0})
f.dLister = append(f.dLister, d)
rs1 := newReplicaSet(d, "deploymentrs-old", 0)
rs1.Annotations = map[string]string{util.RevisionAnnotation: "1"}
one := int64(1)
rs1.Spec.Template.Spec.TerminationGracePeriodSeconds = &one
rs1.Spec.Selector.MatchLabels[apps.DefaultDeploymentUniqueLabelKey] = "hash"
rs2 := newReplicaSet(d, "deploymentrs-new", 1)
rs2.Annotations = map[string]string{util.RevisionAnnotation: "2"}
rs2.Spec.Selector.MatchLabels[apps.DefaultDeploymentUniqueLabelKey] = "hash"
f.rsLister = append(f.rsLister, rs1, rs2)
f.objects = append(f.objects, d, rs1, rs2)
// Rollback is done here
f.expectUpdateDeploymentAction(d)
// Expect no update on replica sets though
f.run(getKey(d, t))
}
// TestPodDeletionEnqueuesRecreateDeployment ensures that the deletion of a pod
// will requeue a Recreate deployment iff there is no other pod returned from the
// client.
func TestPodDeletionEnqueuesRecreateDeployment(t *testing.T) {
f := newFixture(t)
foo := newDeployment("foo", 1, nil, nil, nil, map[string]string{"foo": "bar"})
foo.Spec.Strategy.Type = apps.RecreateDeploymentStrategyType
rs := newReplicaSet(foo, "foo-1", 1)
pod := generatePodFromRS(rs)
f.dLister = append(f.dLister, foo)
f.rsLister = append(f.rsLister, rs)
f.objects = append(f.objects, foo, rs)
c, _, err := f.newController()
if err != nil {
t.Fatalf("error creating Deployment controller: %v", err)
}
enqueued := false
c.enqueueDeployment = func(d *apps.Deployment) {
if d.Name == "foo" {
enqueued = true
}
}
c.deletePod(pod)
if !enqueued {
t.Errorf("expected deployment %q to be queued after pod deletion", foo.Name)
}
}
// TestPodDeletionDoesntEnqueueRecreateDeployment ensures that the deletion of a pod
// will not requeue a Recreate deployment iff there are other pods returned from the
// client.
func TestPodDeletionDoesntEnqueueRecreateDeployment(t *testing.T) {
f := newFixture(t)
foo := newDeployment("foo", 1, nil, nil, nil, map[string]string{"foo": "bar"})
foo.Spec.Strategy.Type = apps.RecreateDeploymentStrategyType
rs1 := newReplicaSet(foo, "foo-1", 1)
rs2 := newReplicaSet(foo, "foo-1", 1)
pod1 := generatePodFromRS(rs1)
pod2 := generatePodFromRS(rs2)
f.dLister = append(f.dLister, foo)
// Let's pretend this is a different pod. The gist is that the pod lister needs to
// return a non-empty list.
f.podLister = append(f.podLister, pod1, pod2)
c, _, err := f.newController()
if err != nil {
t.Fatalf("error creating Deployment controller: %v", err)
}
enqueued := false
c.enqueueDeployment = func(d *apps.Deployment) {
if d.Name == "foo" {
enqueued = true
}
}
c.deletePod(pod1)
if enqueued {
t.Errorf("expected deployment %q not to be queued after pod deletion", foo.Name)
}
}
// TestPodDeletionPartialReplicaSetOwnershipEnqueueRecreateDeployment ensures that
// the deletion of a pod will requeue a Recreate deployment iff there is no other
// pod returned from the client in the case where a deployment has multiple replica
// sets, some of which have empty owner references.
func TestPodDeletionPartialReplicaSetOwnershipEnqueueRecreateDeployment(t *testing.T) {
f := newFixture(t)
foo := newDeployment("foo", 1, nil, nil, nil, map[string]string{"foo": "bar"})
foo.Spec.Strategy.Type = apps.RecreateDeploymentStrategyType
rs1 := newReplicaSet(foo, "foo-1", 1)
rs2 := newReplicaSet(foo, "foo-2", 2)
rs2.OwnerReferences = nil
pod := generatePodFromRS(rs1)
f.dLister = append(f.dLister, foo)
f.rsLister = append(f.rsLister, rs1, rs2)
f.objects = append(f.objects, foo, rs1, rs2)
c, _, err := f.newController()
if err != nil {
t.Fatalf("error creating Deployment controller: %v", err)
}
enqueued := false
c.enqueueDeployment = func(d *apps.Deployment) {
if d.Name == "foo" {
enqueued = true
}
}
c.deletePod(pod)
if !enqueued {
t.Errorf("expected deployment %q to be queued after pod deletion", foo.Name)
}
}
// TestPodDeletionPartialReplicaSetOwnershipDoesntEnqueueRecreateDeployment that the
// deletion of a pod will not requeue a Recreate deployment iff there are other pods
// returned from the client in the case where a deployment has multiple replica sets,
// some of which have empty owner references.
func TestPodDeletionPartialReplicaSetOwnershipDoesntEnqueueRecreateDeployment(t *testing.T) {
f := newFixture(t)
foo := newDeployment("foo", 1, nil, nil, nil, map[string]string{"foo": "bar"})
foo.Spec.Strategy.Type = apps.RecreateDeploymentStrategyType
rs1 := newReplicaSet(foo, "foo-1", 1)
rs2 := newReplicaSet(foo, "foo-2", 2)
rs2.OwnerReferences = nil
pod := generatePodFromRS(rs1)
f.dLister = append(f.dLister, foo)
f.rsLister = append(f.rsLister, rs1, rs2)
f.objects = append(f.objects, foo, rs1, rs2)
// Let's pretend this is a different pod. The gist is that the pod lister needs to
// return a non-empty list.
f.podLister = append(f.podLister, pod)
c, _, err := f.newController()
if err != nil {
t.Fatalf("error creating Deployment controller: %v", err)
}
enqueued := false
c.enqueueDeployment = func(d *apps.Deployment) {
if d.Name == "foo" {
enqueued = true
}
}
c.deletePod(pod)
if enqueued {
t.Errorf("expected deployment %q not to be queued after pod deletion", foo.Name)
}
}
func TestGetReplicaSetsForDeployment(t *testing.T) {
f := newFixture(t)
// Two Deployments with same labels.
d1 := newDeployment("foo", 1, nil, nil, nil, map[string]string{"foo": "bar"})
d2 := newDeployment("bar", 1, nil, nil, nil, map[string]string{"foo": "bar"})
// Two ReplicaSets that match labels for both Deployments,
// but have ControllerRefs to make ownership explicit.
rs1 := newReplicaSet(d1, "rs1", 1)
rs2 := newReplicaSet(d2, "rs2", 1)
f.dLister = append(f.dLister, d1, d2)
f.rsLister = append(f.rsLister, rs1, rs2)
f.objects = append(f.objects, d1, d2, rs1, rs2)
// Start the fixture.
c, informers, err := f.newController()
if err != nil {
t.Fatalf("error creating Deployment controller: %v", err)
}
stopCh := make(chan struct{})
defer close(stopCh)
informers.Start(stopCh)
rsList, err := c.getReplicaSetsForDeployment(d1)
if err != nil {
t.Fatalf("getReplicaSetsForDeployment() error: %v", err)
}
rsNames := []string{}
for _, rs := range rsList {
rsNames = append(rsNames, rs.Name)
}
if len(rsNames) != 1 || rsNames[0] != rs1.Name {
t.Errorf("getReplicaSetsForDeployment() = %v, want [%v]", rsNames, rs1.Name)
}
rsList, err = c.getReplicaSetsForDeployment(d2)
if err != nil {
t.Fatalf("getReplicaSetsForDeployment() error: %v", err)
}
rsNames = []string{}
for _, rs := range rsList {
rsNames = append(rsNames, rs.Name)
}
if len(rsNames) != 1 || rsNames[0] != rs2.Name {
t.Errorf("getReplicaSetsForDeployment() = %v, want [%v]", rsNames, rs2.Name)
}
}
func TestGetReplicaSetsForDeploymentAdoptRelease(t *testing.T) {
f := newFixture(t)
d := newDeployment("foo", 1, nil, nil, nil, map[string]string{"foo": "bar"})
// RS with matching labels, but orphaned. Should be adopted and returned.
rsAdopt := newReplicaSet(d, "rsAdopt", 1)
rsAdopt.OwnerReferences = nil
// RS with matching ControllerRef, but wrong labels. Should be released.
rsRelease := newReplicaSet(d, "rsRelease", 1)
rsRelease.Labels = map[string]string{"foo": "notbar"}
f.dLister = append(f.dLister, d)
f.rsLister = append(f.rsLister, rsAdopt, rsRelease)
f.objects = append(f.objects, d, rsAdopt, rsRelease)
// Start the fixture.
c, informers, err := f.newController()
if err != nil {
t.Fatalf("error creating Deployment controller: %v", err)
}
stopCh := make(chan struct{})
defer close(stopCh)
informers.Start(stopCh)
rsList, err := c.getReplicaSetsForDeployment(d)
if err != nil {
t.Fatalf("getReplicaSetsForDeployment() error: %v", err)
}
rsNames := []string{}
for _, rs := range rsList {
rsNames = append(rsNames, rs.Name)
}
if len(rsNames) != 1 || rsNames[0] != rsAdopt.Name {
t.Errorf("getReplicaSetsForDeployment() = %v, want [%v]", rsNames, rsAdopt.Name)
}
}
func TestGetPodMapForReplicaSets(t *testing.T) {
f := newFixture(t)
d := newDeployment("foo", 1, nil, nil, nil, map[string]string{"foo": "bar"})
rs1 := newReplicaSet(d, "rs1", 1)
rs2 := newReplicaSet(d, "rs2", 1)
// Add a Pod for each ReplicaSet.
pod1 := generatePodFromRS(rs1)
pod2 := generatePodFromRS(rs2)
// Add a Pod that has matching labels, but no ControllerRef.
pod3 := generatePodFromRS(rs1)
pod3.Name = "pod3"
pod3.OwnerReferences = nil
// Add a Pod that has matching labels and ControllerRef, but is inactive.
pod4 := generatePodFromRS(rs1)
pod4.Name = "pod4"
pod4.Status.Phase = v1.PodFailed
f.dLister = append(f.dLister, d)
f.rsLister = append(f.rsLister, rs1, rs2)
f.podLister = append(f.podLister, pod1, pod2, pod3, pod4)
f.objects = append(f.objects, d, rs1, rs2, pod1, pod2, pod3, pod4)
// Start the fixture.
c, informers, err := f.newController()
if err != nil {
t.Fatalf("error creating Deployment controller: %v", err)
}
stopCh := make(chan struct{})
defer close(stopCh)
informers.Start(stopCh)
podMap, err := c.getPodMapForDeployment(d, f.rsLister)
if err != nil {
t.Fatalf("getPodMapForDeployment() error: %v", err)
}
podCount := 0
for _, podList := range podMap {
podCount += len(podList.Items)
}
if got, want := podCount, 3; got != want {
t.Errorf("podCount = %v, want %v", got, want)
}
if got, want := len(podMap), 2; got != want {
t.Errorf("len(podMap) = %v, want %v", got, want)
}
if got, want := len(podMap[rs1.UID].Items), 2; got != want {
t.Errorf("len(podMap[rs1]) = %v, want %v", got, want)
}
expect := map[string]struct{}{"rs1-pod": {}, "pod4": {}}
for _, pod := range podMap[rs1.UID].Items {
if _, ok := expect[pod.Name]; !ok {
t.Errorf("unexpected pod name for rs1: %s", pod.Name)
}
}
if got, want := len(podMap[rs2.UID].Items), 1; got != want {
t.Errorf("len(podMap[rs2]) = %v, want %v", got, want)
}
if got, want := podMap[rs2.UID].Items[0].Name, "rs2-pod"; got != want {
t.Errorf("podMap[rs2] = [%v], want [%v]", got, want)
}
}
func TestAddReplicaSet(t *testing.T) {
f := newFixture(t)
d1 := newDeployment("d1", 1, nil, nil, nil, map[string]string{"foo": "bar"})
d2 := newDeployment("d2", 1, nil, nil, nil, map[string]string{"foo": "bar"})
// Two ReplicaSets that match labels for both Deployments,
// but have ControllerRefs to make ownership explicit.
rs1 := newReplicaSet(d1, "rs1", 1)
rs2 := newReplicaSet(d2, "rs2", 1)
f.dLister = append(f.dLister, d1, d2)
f.objects = append(f.objects, d1, d2, rs1, rs2)
// Create the fixture but don't start it,
// so nothing happens in the background.
dc, _, err := f.newController()
if err != nil {
t.Fatalf("error creating Deployment controller: %v", err)
}
dc.addReplicaSet(rs1)
if got, want := dc.queue.Len(), 1; got != want {
t.Fatalf("queue.Len() = %v, want %v", got, want)
}
key, done := dc.queue.Get()
if key == nil || done {
t.Fatalf("failed to enqueue controller for rs %v", rs1.Name)
}
expectedKey, _ := controller.KeyFunc(d1)
if got, want := key.(string), expectedKey; got != want {
t.Errorf("queue.Get() = %v, want %v", got, want)
}
dc.addReplicaSet(rs2)
if got, want := dc.queue.Len(), 1; got != want {
t.Fatalf("queue.Len() = %v, want %v", got, want)
}
key, done = dc.queue.Get()
if key == nil || done {
t.Fatalf("failed to enqueue controller for rs %v", rs2.Name)
}
expectedKey, _ = controller.KeyFunc(d2)
if got, want := key.(string), expectedKey; got != want {
t.Errorf("queue.Get() = %v, want %v", got, want)
}
}
func TestAddReplicaSetOrphan(t *testing.T) {
f := newFixture(t)
// 2 will match the RS, 1 won't.
d1 := newDeployment("d1", 1, nil, nil, nil, map[string]string{"foo": "bar"})
d2 := newDeployment("d2", 1, nil, nil, nil, map[string]string{"foo": "bar"})
d3 := newDeployment("d3", 1, nil, nil, nil, map[string]string{"foo": "bar"})
d3.Spec.Selector.MatchLabels = map[string]string{"foo": "notbar"}
// Make the RS an orphan. Expect matching Deployments to be queued.
rs := newReplicaSet(d1, "rs1", 1)
rs.OwnerReferences = nil
f.dLister = append(f.dLister, d1, d2, d3)
f.objects = append(f.objects, d1, d2, d3)
// Create the fixture but don't start it,
// so nothing happens in the background.
dc, _, err := f.newController()
if err != nil {
t.Fatalf("error creating Deployment controller: %v", err)
}
dc.addReplicaSet(rs)
if got, want := dc.queue.Len(), 2; got != want {
t.Fatalf("queue.Len() = %v, want %v", got, want)
}
}
func TestUpdateReplicaSet(t *testing.T) {
f := newFixture(t)
d1 := newDeployment("d1", 1, nil, nil, nil, map[string]string{"foo": "bar"})
d2 := newDeployment("d2", 1, nil, nil, nil, map[string]string{"foo": "bar"})
// Two ReplicaSets that match labels for both Deployments,
// but have ControllerRefs to make ownership explicit.
rs1 := newReplicaSet(d1, "rs1", 1)
rs2 := newReplicaSet(d2, "rs2", 1)
f.dLister = append(f.dLister, d1, d2)
f.rsLister = append(f.rsLister, rs1, rs2)
f.objects = append(f.objects, d1, d2, rs1, rs2)
// Create the fixture but don't start it,
// so nothing happens in the background.
dc, _, err := f.newController()
if err != nil {
t.Fatalf("error creating Deployment controller: %v", err)
}
prev := *rs1
next := *rs1
bumpResourceVersion(&next)
dc.updateReplicaSet(&prev, &next)
if got, want := dc.queue.Len(), 1; got != want {
t.Fatalf("queue.Len() = %v, want %v", got, want)
}
key, done := dc.queue.Get()
if key == nil || done {
t.Fatalf("failed to enqueue controller for rs %v", rs1.Name)
}
expectedKey, _ := controller.KeyFunc(d1)
if got, want := key.(string), expectedKey; got != want {
t.Errorf("queue.Get() = %v, want %v", got, want)
}
prev = *rs2
next = *rs2
bumpResourceVersion(&next)
dc.updateReplicaSet(&prev, &next)
if got, want := dc.queue.Len(), 1; got != want {
t.Fatalf("queue.Len() = %v, want %v", got, want)
}
key, done = dc.queue.Get()
if key == nil || done {
t.Fatalf("failed to enqueue controller for rs %v", rs2.Name)
}
expectedKey, _ = controller.KeyFunc(d2)
if got, want := key.(string), expectedKey; got != want {
t.Errorf("queue.Get() = %v, want %v", got, want)
}
}
func TestUpdateReplicaSetOrphanWithNewLabels(t *testing.T) {
f := newFixture(t)
d1 := newDeployment("d1", 1, nil, nil, nil, map[string]string{"foo": "bar"})
d2 := newDeployment("d2", 1, nil, nil, nil, map[string]string{"foo": "bar"})
// RS matches both, but is an orphan.
rs := newReplicaSet(d1, "rs1", 1)
rs.OwnerReferences = nil
f.dLister = append(f.dLister, d1, d2)
f.rsLister = append(f.rsLister, rs)
f.objects = append(f.objects, d1, d2, rs)
// Create the fixture but don't start it,
// so nothing happens in the background.
dc, _, err := f.newController()
if err != nil {
t.Fatalf("error creating Deployment controller: %v", err)
}
// Change labels and expect all matching controllers to queue.
prev := *rs
prev.Labels = map[string]string{"foo": "notbar"}
next := *rs
bumpResourceVersion(&next)
dc.updateReplicaSet(&prev, &next)
if got, want := dc.queue.Len(), 2; got != want {
t.Fatalf("queue.Len() = %v, want %v", got, want)
}
}
func TestUpdateReplicaSetChangeControllerRef(t *testing.T) {
f := newFixture(t)
d1 := newDeployment("d1", 1, nil, nil, nil, map[string]string{"foo": "bar"})
d2 := newDeployment("d2", 1, nil, nil, nil, map[string]string{"foo": "bar"})
rs := newReplicaSet(d1, "rs1", 1)
f.dLister = append(f.dLister, d1, d2)
f.rsLister = append(f.rsLister, rs)
f.objects = append(f.objects, d1, d2, rs)
// Create the fixture but don't start it,
// so nothing happens in the background.
dc, _, err := f.newController()
if err != nil {
t.Fatalf("error creating Deployment controller: %v", err)
}
// Change ControllerRef and expect both old and new to queue.
prev := *rs
prev.OwnerReferences = []metav1.OwnerReference{*metav1.NewControllerRef(d2, controllerKind)}
next := *rs
bumpResourceVersion(&next)
dc.updateReplicaSet(&prev, &next)
if got, want := dc.queue.Len(), 2; got != want {
t.Fatalf("queue.Len() = %v, want %v", got, want)
}
}
func TestUpdateReplicaSetRelease(t *testing.T) {
f := newFixture(t)
d1 := newDeployment("d1", 1, nil, nil, nil, map[string]string{"foo": "bar"})
d2 := newDeployment("d2", 1, nil, nil, nil, map[string]string{"foo": "bar"})
rs := newReplicaSet(d1, "rs1", 1)
f.dLister = append(f.dLister, d1, d2)
f.rsLister = append(f.rsLister, rs)
f.objects = append(f.objects, d1, d2, rs)
// Create the fixture but don't start it,
// so nothing happens in the background.
dc, _, err := f.newController()
if err != nil {
t.Fatalf("error creating Deployment controller: %v", err)
}
// Remove ControllerRef and expect all matching controller to sync orphan.
prev := *rs
next := *rs
next.OwnerReferences = nil
bumpResourceVersion(&next)
dc.updateReplicaSet(&prev, &next)
if got, want := dc.queue.Len(), 2; got != want {
t.Fatalf("queue.Len() = %v, want %v", got, want)
}
}
func TestDeleteReplicaSet(t *testing.T) {
f := newFixture(t)
d1 := newDeployment("d1", 1, nil, nil, nil, map[string]string{"foo": "bar"})
d2 := newDeployment("d2", 1, nil, nil, nil, map[string]string{"foo": "bar"})
// Two ReplicaSets that match labels for both Deployments,
// but have ControllerRefs to make ownership explicit.
rs1 := newReplicaSet(d1, "rs1", 1)
rs2 := newReplicaSet(d2, "rs2", 1)
f.dLister = append(f.dLister, d1, d2)
f.rsLister = append(f.rsLister, rs1, rs2)
f.objects = append(f.objects, d1, d2, rs1, rs2)
// Create the fixture but don't start it,
// so nothing happens in the background.
dc, _, err := f.newController()
if err != nil {
t.Fatalf("error creating Deployment controller: %v", err)
}
dc.deleteReplicaSet(rs1)
if got, want := dc.queue.Len(), 1; got != want {
t.Fatalf("queue.Len() = %v, want %v", got, want)
}
key, done := dc.queue.Get()
if key == nil || done {
t.Fatalf("failed to enqueue controller for rs %v", rs1.Name)
}
expectedKey, _ := controller.KeyFunc(d1)
if got, want := key.(string), expectedKey; got != want {
t.Errorf("queue.Get() = %v, want %v", got, want)
}
dc.deleteReplicaSet(rs2)
if got, want := dc.queue.Len(), 1; got != want {
t.Fatalf("queue.Len() = %v, want %v", got, want)
}
key, done = dc.queue.Get()
if key == nil || done {
t.Fatalf("failed to enqueue controller for rs %v", rs2.Name)
}
expectedKey, _ = controller.KeyFunc(d2)
if got, want := key.(string), expectedKey; got != want {
t.Errorf("queue.Get() = %v, want %v", got, want)
}
}
func TestDeleteReplicaSetOrphan(t *testing.T) {
f := newFixture(t)
d1 := newDeployment("d1", 1, nil, nil, nil, map[string]string{"foo": "bar"})
d2 := newDeployment("d2", 1, nil, nil, nil, map[string]string{"foo": "bar"})
// Make the RS an orphan. Expect matching Deployments to be queued.
rs := newReplicaSet(d1, "rs1", 1)
rs.OwnerReferences = nil
f.dLister = append(f.dLister, d1, d2)
f.rsLister = append(f.rsLister, rs)
f.objects = append(f.objects, d1, d2, rs)
// Create the fixture but don't start it,
// so nothing happens in the background.
dc, _, err := f.newController()
if err != nil {
t.Fatalf("error creating Deployment controller: %v", err)
}
dc.deleteReplicaSet(rs)
if got, want := dc.queue.Len(), 0; got != want {
t.Fatalf("queue.Len() = %v, want %v", got, want)
}
}
func bumpResourceVersion(obj metav1.Object) {
ver, _ := strconv.ParseInt(obj.GetResourceVersion(), 10, 32)
obj.SetResourceVersion(strconv.FormatInt(ver+1, 10))
}
// generatePodFromRS creates a pod, with the input ReplicaSet's selector and its template
func generatePodFromRS(rs *apps.ReplicaSet) *v1.Pod {
trueVar := true
return &v1.Pod{
ObjectMeta: metav1.ObjectMeta{
Name: rs.Name + "-pod",
Namespace: rs.Namespace,
Labels: rs.Spec.Selector.MatchLabels,
OwnerReferences: []metav1.OwnerReference{
{UID: rs.UID, APIVersion: "v1beta1", Kind: "ReplicaSet", Name: rs.Name, Controller: &trueVar},
},
},
Spec: rs.Spec.Template.Spec,
}
}

198
vendor/k8s.io/kubernetes/pkg/controller/deployment/progress.go generated vendored
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@ -1,198 +0,0 @@
/*
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 deployment
import (
"fmt"
"reflect"
"time"
"github.com/golang/glog"
apps "k8s.io/api/apps/v1"
"k8s.io/api/core/v1"
"k8s.io/kubernetes/pkg/controller/deployment/util"
)
// syncRolloutStatus updates the status of a deployment during a rollout. There are
// cases this helper will run that cannot be prevented from the scaling detection,
// for example a resync of the deployment after it was scaled up. In those cases,
// we shouldn't try to estimate any progress.
func (dc *DeploymentController) syncRolloutStatus(allRSs []*apps.ReplicaSet, newRS *apps.ReplicaSet, d *apps.Deployment) error {
newStatus := calculateStatus(allRSs, newRS, d)
// If there is no progressDeadlineSeconds set, remove any Progressing condition.
if d.Spec.ProgressDeadlineSeconds == nil {
util.RemoveDeploymentCondition(&newStatus, apps.DeploymentProgressing)
}
// If there is only one replica set that is active then that means we are not running
// a new rollout and this is a resync where we don't need to estimate any progress.
// In such a case, we should simply not estimate any progress for this deployment.
currentCond := util.GetDeploymentCondition(d.Status, apps.DeploymentProgressing)
isCompleteDeployment := newStatus.Replicas == newStatus.UpdatedReplicas && currentCond != nil && currentCond.Reason == util.NewRSAvailableReason
// Check for progress only if there is a progress deadline set and the latest rollout
// hasn't completed yet.
if d.Spec.ProgressDeadlineSeconds != nil && !isCompleteDeployment {
switch {
case util.DeploymentComplete(d, &newStatus):
// Update the deployment conditions with a message for the new replica set that
// was successfully deployed. If the condition already exists, we ignore this update.
msg := fmt.Sprintf("Deployment %q has successfully progressed.", d.Name)
if newRS != nil {
msg = fmt.Sprintf("ReplicaSet %q has successfully progressed.", newRS.Name)
}
condition := util.NewDeploymentCondition(apps.DeploymentProgressing, v1.ConditionTrue, util.NewRSAvailableReason, msg)
util.SetDeploymentCondition(&newStatus, *condition)
case util.DeploymentProgressing(d, &newStatus):
// If there is any progress made, continue by not checking if the deployment failed. This
// behavior emulates the rolling updater progressDeadline check.
msg := fmt.Sprintf("Deployment %q is progressing.", d.Name)
if newRS != nil {
msg = fmt.Sprintf("ReplicaSet %q is progressing.", newRS.Name)
}
condition := util.NewDeploymentCondition(apps.DeploymentProgressing, v1.ConditionTrue, util.ReplicaSetUpdatedReason, msg)
// Update the current Progressing condition or add a new one if it doesn't exist.
// If a Progressing condition with status=true already exists, we should update
// everything but lastTransitionTime. SetDeploymentCondition already does that but
// it also is not updating conditions when the reason of the new condition is the
// same as the old. The Progressing condition is a special case because we want to
// update with the same reason and change just lastUpdateTime iff we notice any
// progress. That's why we handle it here.
if currentCond != nil {
if currentCond.Status == v1.ConditionTrue {
condition.LastTransitionTime = currentCond.LastTransitionTime
}
util.RemoveDeploymentCondition(&newStatus, apps.DeploymentProgressing)
}
util.SetDeploymentCondition(&newStatus, *condition)
case util.DeploymentTimedOut(d, &newStatus):
// Update the deployment with a timeout condition. If the condition already exists,
// we ignore this update.
msg := fmt.Sprintf("Deployment %q has timed out progressing.", d.Name)
if newRS != nil {
msg = fmt.Sprintf("ReplicaSet %q has timed out progressing.", newRS.Name)
}
condition := util.NewDeploymentCondition(apps.DeploymentProgressing, v1.ConditionFalse, util.TimedOutReason, msg)
util.SetDeploymentCondition(&newStatus, *condition)
}
}
// Move failure conditions of all replica sets in deployment conditions. For now,
// only one failure condition is returned from getReplicaFailures.
if replicaFailureCond := dc.getReplicaFailures(allRSs, newRS); len(replicaFailureCond) > 0 {
// There will be only one ReplicaFailure condition on the replica set.
util.SetDeploymentCondition(&newStatus, replicaFailureCond[0])
} else {
util.RemoveDeploymentCondition(&newStatus, apps.DeploymentReplicaFailure)
}
// Do not update if there is nothing new to add.
if reflect.DeepEqual(d.Status, newStatus) {
// Requeue the deployment if required.
dc.requeueStuckDeployment(d, newStatus)
return nil
}
newDeployment := d
newDeployment.Status = newStatus
_, err := dc.client.AppsV1().Deployments(newDeployment.Namespace).UpdateStatus(newDeployment)
return err
}
// getReplicaFailures will convert replica failure conditions from replica sets
// to deployment conditions.
func (dc *DeploymentController) getReplicaFailures(allRSs []*apps.ReplicaSet, newRS *apps.ReplicaSet) []apps.DeploymentCondition {
var conditions []apps.DeploymentCondition
if newRS != nil {
for _, c := range newRS.Status.Conditions {
if c.Type != apps.ReplicaSetReplicaFailure {
continue
}
conditions = append(conditions, util.ReplicaSetToDeploymentCondition(c))
}
}
// Return failures for the new replica set over failures from old replica sets.
if len(conditions) > 0 {
return conditions
}
for i := range allRSs {
rs := allRSs[i]
if rs == nil {
continue
}
for _, c := range rs.Status.Conditions {
if c.Type != apps.ReplicaSetReplicaFailure {
continue
}
conditions = append(conditions, util.ReplicaSetToDeploymentCondition(c))
}
}
return conditions
}
// used for unit testing
var nowFn = func() time.Time { return time.Now() }
// requeueStuckDeployment checks whether the provided deployment needs to be synced for a progress
// check. It returns the time after the deployment will be requeued for the progress check, 0 if it
// will be requeued now, or -1 if it does not need to be requeued.
func (dc *DeploymentController) requeueStuckDeployment(d *apps.Deployment, newStatus apps.DeploymentStatus) time.Duration {
currentCond := util.GetDeploymentCondition(d.Status, apps.DeploymentProgressing)
// Can't estimate progress if there is no deadline in the spec or progressing condition in the current status.
if d.Spec.ProgressDeadlineSeconds == nil || currentCond == nil {
return time.Duration(-1)
}
// No need to estimate progress if the rollout is complete or already timed out.
if util.DeploymentComplete(d, &newStatus) || currentCond.Reason == util.TimedOutReason {
return time.Duration(-1)
}
// If there is no sign of progress at this point then there is a high chance that the
// deployment is stuck. We should resync this deployment at some point in the future[1]
// and check whether it has timed out. We definitely need this, otherwise we depend on the
// controller resync interval. See https://github.com/kubernetes/kubernetes/issues/34458.
//
// [1] ProgressingCondition.LastUpdatedTime + progressDeadlineSeconds - time.Now()
//
// For example, if a Deployment updated its Progressing condition 3 minutes ago and has a
// deadline of 10 minutes, it would need to be resynced for a progress check after 7 minutes.
//
// lastUpdated: 00:00:00
// now: 00:03:00
// progressDeadlineSeconds: 600 (10 minutes)
//
// lastUpdated + progressDeadlineSeconds - now => 00:00:00 + 00:10:00 - 00:03:00 => 07:00
after := currentCond.LastUpdateTime.Time.Add(time.Duration(*d.Spec.ProgressDeadlineSeconds) * time.Second).Sub(nowFn())
// If the remaining time is less than a second, then requeue the deployment immediately.
// Make it ratelimited so we stay on the safe side, eventually the Deployment should
// transition either to a Complete or to a TimedOut condition.
if after < time.Second {
glog.V(4).Infof("Queueing up deployment %q for a progress check now", d.Name)
dc.enqueueRateLimited(d)
return time.Duration(0)
}
glog.V(4).Infof("Queueing up deployment %q for a progress check after %ds", d.Name, int(after.Seconds()))
// Add a second to avoid milliseconds skew in AddAfter.
// See https://github.com/kubernetes/kubernetes/issues/39785#issuecomment-279959133 for more info.
dc.enqueueAfter(d, after+time.Second)
return after
}

345
vendor/k8s.io/kubernetes/pkg/controller/deployment/progress_test.go generated vendored
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@ -1,345 +0,0 @@
/*
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.
*/
package deployment
import (
"testing"
"time"
apps "k8s.io/api/apps/v1"
"k8s.io/api/core/v1"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/client-go/kubernetes/fake"
"k8s.io/client-go/util/workqueue"
"k8s.io/kubernetes/pkg/controller/deployment/util"
)
func newDeploymentStatus(replicas, updatedReplicas, availableReplicas int32) apps.DeploymentStatus {
return apps.DeploymentStatus{
Replicas: replicas,
UpdatedReplicas: updatedReplicas,
AvailableReplicas: availableReplicas,
}
}
// assumes the retuned deployment is always observed - not needed to be tested here.
func currentDeployment(pds *int32, replicas, statusReplicas, updatedReplicas, availableReplicas int32, conditions []apps.DeploymentCondition) *apps.Deployment {
d := &apps.Deployment{
ObjectMeta: metav1.ObjectMeta{
Name: "progress-test",
},
Spec: apps.DeploymentSpec{
ProgressDeadlineSeconds: pds,
Replicas: &replicas,
Strategy: apps.DeploymentStrategy{
Type: apps.RecreateDeploymentStrategyType,
},
},
Status: newDeploymentStatus(statusReplicas, updatedReplicas, availableReplicas),
}
d.Status.Conditions = conditions
return d
}
// helper to create RS with given availableReplicas
func newRSWithAvailable(name string, specReplicas, statusReplicas, availableReplicas int) *apps.ReplicaSet {
rs := rs(name, specReplicas, nil, metav1.Time{})
rs.Status = apps.ReplicaSetStatus{
Replicas: int32(statusReplicas),
AvailableReplicas: int32(availableReplicas),
}
return rs
}
func TestRequeueStuckDeployment(t *testing.T) {
pds := int32(60)
failed := []apps.DeploymentCondition{
{
Type: apps.DeploymentProgressing,
Status: v1.ConditionFalse,
Reason: util.TimedOutReason,
},
}
stuck := []apps.DeploymentCondition{
{
Type: apps.DeploymentProgressing,
Status: v1.ConditionTrue,
LastUpdateTime: metav1.Date(2017, 2, 15, 18, 49, 00, 00, time.UTC),
},
}
tests := []struct {
name string
d *apps.Deployment
status apps.DeploymentStatus
nowFn func() time.Time
expected time.Duration
}{
{
name: "no progressDeadlineSeconds specified",
d: currentDeployment(nil, 4, 3, 3, 2, nil),
status: newDeploymentStatus(3, 3, 2),
expected: time.Duration(-1),
},
{
name: "no progressing condition found",
d: currentDeployment(&pds, 4, 3, 3, 2, nil),
status: newDeploymentStatus(3, 3, 2),
expected: time.Duration(-1),
},
{
name: "complete deployment does not need to be requeued",
d: currentDeployment(&pds, 3, 3, 3, 3, nil),
status: newDeploymentStatus(3, 3, 3),
expected: time.Duration(-1),
},
{
name: "already failed deployment does not need to be requeued",
d: currentDeployment(&pds, 3, 3, 3, 0, failed),
status: newDeploymentStatus(3, 3, 0),
expected: time.Duration(-1),
},
{
name: "stuck deployment - 30s",
d: currentDeployment(&pds, 3, 3, 3, 1, stuck),
status: newDeploymentStatus(3, 3, 1),
nowFn: func() time.Time { return metav1.Date(2017, 2, 15, 18, 49, 30, 00, time.UTC).Time },
expected: 30 * time.Second,
},
{
name: "stuck deployment - 1s",
d: currentDeployment(&pds, 3, 3, 3, 1, stuck),
status: newDeploymentStatus(3, 3, 1),
nowFn: func() time.Time { return metav1.Date(2017, 2, 15, 18, 49, 59, 00, time.UTC).Time },
expected: 1 * time.Second,
},
{
name: "failed deployment - less than a second => now",
d: currentDeployment(&pds, 3, 3, 3, 1, stuck),
status: newDeploymentStatus(3, 3, 1),
nowFn: func() time.Time { return metav1.Date(2017, 2, 15, 18, 49, 59, 1, time.UTC).Time },
expected: time.Duration(0),
},
{
name: "failed deployment - now",
d: currentDeployment(&pds, 3, 3, 3, 1, stuck),
status: newDeploymentStatus(3, 3, 1),
nowFn: func() time.Time { return metav1.Date(2017, 2, 15, 18, 50, 00, 00, time.UTC).Time },
expected: time.Duration(0),
},
{
name: "failed deployment - 1s after deadline",
d: currentDeployment(&pds, 3, 3, 3, 1, stuck),
status: newDeploymentStatus(3, 3, 1),
nowFn: func() time.Time { return metav1.Date(2017, 2, 15, 18, 50, 01, 00, time.UTC).Time },
expected: time.Duration(0),
},
{
name: "failed deployment - 60s after deadline",
d: currentDeployment(&pds, 3, 3, 3, 1, stuck),
status: newDeploymentStatus(3, 3, 1),
nowFn: func() time.Time { return metav1.Date(2017, 2, 15, 18, 51, 00, 00, time.UTC).Time },
expected: time.Duration(0),
},
}
dc := &DeploymentController{
queue: workqueue.NewNamedRateLimitingQueue(workqueue.DefaultControllerRateLimiter(), "doesnt-matter"),
}
dc.enqueueDeployment = dc.enqueue
for _, test := range tests {
t.Run(test.name, func(t *testing.T) {
if test.nowFn != nil {
nowFn = test.nowFn
}
got := dc.requeueStuckDeployment(test.d, test.status)
if got != test.expected {
t.Errorf("%s: got duration: %v, expected duration: %v", test.name, got, test.expected)
}
})
}
}
func TestSyncRolloutStatus(t *testing.T) {
pds := int32(60)
testTime := metav1.Date(2017, 2, 15, 18, 49, 00, 00, time.UTC)
failedTimedOut := apps.DeploymentCondition{
Type: apps.DeploymentProgressing,
Status: v1.ConditionFalse,
Reason: util.TimedOutReason,
}
newRSAvailable := apps.DeploymentCondition{
Type: apps.DeploymentProgressing,
Status: v1.ConditionTrue,
Reason: util.NewRSAvailableReason,
LastUpdateTime: testTime,
LastTransitionTime: testTime,
}
replicaSetUpdated := apps.DeploymentCondition{
Type: apps.DeploymentProgressing,
Status: v1.ConditionTrue,
Reason: util.ReplicaSetUpdatedReason,
LastUpdateTime: testTime,
LastTransitionTime: testTime,
}
tests := []struct {
name string
d *apps.Deployment
allRSs []*apps.ReplicaSet
newRS *apps.ReplicaSet
conditionType apps.DeploymentConditionType
conditionStatus v1.ConditionStatus
conditionReason string
lastUpdate metav1.Time
lastTransition metav1.Time
}{
{
name: "General: remove Progressing condition and do not estimate progress if deployment has no Progress Deadline",
d: currentDeployment(nil, 3, 2, 2, 2, []apps.DeploymentCondition{replicaSetUpdated}),
allRSs: []*apps.ReplicaSet{newRSWithAvailable("bar", 0, 1, 1)},
newRS: newRSWithAvailable("foo", 3, 2, 2),
},
{
name: "General: do not estimate progress of deployment with only one active ReplicaSet",
d: currentDeployment(&pds, 3, 3, 3, 3, []apps.DeploymentCondition{newRSAvailable}),
allRSs: []*apps.ReplicaSet{newRSWithAvailable("bar", 3, 3, 3)},
conditionType: apps.DeploymentProgressing,
conditionStatus: v1.ConditionTrue,
conditionReason: util.NewRSAvailableReason,
lastUpdate: testTime,
lastTransition: testTime,
},
{
name: "DeploymentProgressing: dont update lastTransitionTime if deployment already has Progressing=True",
d: currentDeployment(&pds, 3, 2, 2, 2, []apps.DeploymentCondition{replicaSetUpdated}),
allRSs: []*apps.ReplicaSet{newRSWithAvailable("bar", 0, 1, 1)},
newRS: newRSWithAvailable("foo", 3, 2, 2),
conditionType: apps.DeploymentProgressing,
conditionStatus: v1.ConditionTrue,
conditionReason: util.ReplicaSetUpdatedReason,
lastTransition: testTime,
},
{
name: "DeploymentProgressing: update everything if deployment has Progressing=False",
d: currentDeployment(&pds, 3, 2, 2, 2, []apps.DeploymentCondition{failedTimedOut}),
allRSs: []*apps.ReplicaSet{newRSWithAvailable("bar", 0, 1, 1)},
newRS: newRSWithAvailable("foo", 3, 2, 2),
conditionType: apps.DeploymentProgressing,
conditionStatus: v1.ConditionTrue,
conditionReason: util.ReplicaSetUpdatedReason,
},
{
name: "DeploymentProgressing: create Progressing condition if it does not exist",
d: currentDeployment(&pds, 3, 2, 2, 2, []apps.DeploymentCondition{}),
allRSs: []*apps.ReplicaSet{newRSWithAvailable("bar", 0, 1, 1)},
newRS: newRSWithAvailable("foo", 3, 2, 2),
conditionType: apps.DeploymentProgressing,
conditionStatus: v1.ConditionTrue,
conditionReason: util.ReplicaSetUpdatedReason,
},
{
name: "DeploymentComplete: dont update lastTransitionTime if deployment already has Progressing=True",
d: currentDeployment(&pds, 3, 3, 3, 3, []apps.DeploymentCondition{replicaSetUpdated}),
allRSs: []*apps.ReplicaSet{},
newRS: newRSWithAvailable("foo", 3, 3, 3),
conditionType: apps.DeploymentProgressing,
conditionStatus: v1.ConditionTrue,
conditionReason: util.NewRSAvailableReason,
lastTransition: testTime,
},
{
name: "DeploymentComplete: update everything if deployment has Progressing=False",
d: currentDeployment(&pds, 3, 3, 3, 3, []apps.DeploymentCondition{failedTimedOut}),
allRSs: []*apps.ReplicaSet{},
newRS: newRSWithAvailable("foo", 3, 3, 3),
conditionType: apps.DeploymentProgressing,
conditionStatus: v1.ConditionTrue,
conditionReason: util.NewRSAvailableReason,
},
{
name: "DeploymentComplete: create Progressing condition if it does not exist",
d: currentDeployment(&pds, 3, 3, 3, 3, []apps.DeploymentCondition{}),
allRSs: []*apps.ReplicaSet{},
newRS: newRSWithAvailable("foo", 3, 3, 3),
conditionType: apps.DeploymentProgressing,
conditionStatus: v1.ConditionTrue,
conditionReason: util.NewRSAvailableReason,
},
{
name: "DeploymentComplete: defend against NPE when newRS=nil",
d: currentDeployment(&pds, 0, 3, 3, 3, []apps.DeploymentCondition{replicaSetUpdated}),
allRSs: []*apps.ReplicaSet{newRSWithAvailable("foo", 0, 0, 0)},
conditionType: apps.DeploymentProgressing,
conditionStatus: v1.ConditionTrue,
conditionReason: util.NewRSAvailableReason,
},
{
name: "DeploymentTimedOut: update status if rollout exceeds Progress Deadline",
d: currentDeployment(&pds, 3, 2, 2, 2, []apps.DeploymentCondition{replicaSetUpdated}),
allRSs: []*apps.ReplicaSet{},
newRS: newRSWithAvailable("foo", 3, 2, 2),
conditionType: apps.DeploymentProgressing,
conditionStatus: v1.ConditionFalse,
conditionReason: util.TimedOutReason,
},
{
name: "DeploymentTimedOut: do not update status if deployment has existing timedOut condition",
d: currentDeployment(&pds, 3, 2, 2, 2, []apps.DeploymentCondition{failedTimedOut}),
allRSs: []*apps.ReplicaSet{},
newRS: newRSWithAvailable("foo", 3, 2, 2),
conditionType: apps.DeploymentProgressing,
conditionStatus: v1.ConditionFalse,
conditionReason: util.TimedOutReason,
lastUpdate: testTime,
lastTransition: testTime,
},
}
for _, test := range tests {
t.Run(test.name, func(t *testing.T) {
fake := fake.Clientset{}
dc := &DeploymentController{
client: &fake,
}
if test.newRS != nil {
test.allRSs = append(test.allRSs, test.newRS)
}
err := dc.syncRolloutStatus(test.allRSs, test.newRS, test.d)
if err != nil {
t.Error(err)
}
newCond := util.GetDeploymentCondition(test.d.Status, test.conditionType)
switch {
case newCond == nil:
if test.d.Spec.ProgressDeadlineSeconds != nil {
t.Errorf("%s: expected deployment condition: %s", test.name, test.conditionType)
}
case newCond.Status != test.conditionStatus || newCond.Reason != test.conditionReason:
t.Errorf("%s: DeploymentProgressing has status %s with reason %s. Expected %s with %s.", test.name, newCond.Status, newCond.Reason, test.conditionStatus, test.conditionReason)
case !test.lastUpdate.IsZero() && test.lastUpdate != testTime:
t.Errorf("%s: LastUpdateTime was changed to %s but expected %s;", test.name, test.lastUpdate, testTime)
case !test.lastTransition.IsZero() && test.lastTransition != testTime:
t.Errorf("%s: LastTransitionTime was changed to %s but expected %s;", test.name, test.lastTransition, testTime)
}
})
}
}

129
vendor/k8s.io/kubernetes/pkg/controller/deployment/recreate.go generated vendored
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@ -1,129 +0,0 @@
/*
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 deployment
import (
apps "k8s.io/api/apps/v1"
"k8s.io/api/core/v1"
"k8s.io/apimachinery/pkg/types"
"k8s.io/kubernetes/pkg/controller"
"k8s.io/kubernetes/pkg/controller/deployment/util"
)
// rolloutRecreate implements the logic for recreating a replica set.
func (dc *DeploymentController) rolloutRecreate(d *apps.Deployment, rsList []*apps.ReplicaSet, podMap map[types.UID]*v1.PodList) error {
// Don't create a new RS if not already existed, so that we avoid scaling up before scaling down.
newRS, oldRSs, err := dc.getAllReplicaSetsAndSyncRevision(d, rsList, podMap, false)
if err != nil {
return err
}
allRSs := append(oldRSs, newRS)
activeOldRSs := controller.FilterActiveReplicaSets(oldRSs)
// scale down old replica sets.
scaledDown, err := dc.scaleDownOldReplicaSetsForRecreate(activeOldRSs, d)
if err != nil {
return err
}
if scaledDown {
// Update DeploymentStatus.
return dc.syncRolloutStatus(allRSs, newRS, d)
}
// Do not process a deployment when it has old pods running.
if oldPodsRunning(newRS, oldRSs, podMap) {
return dc.syncRolloutStatus(allRSs, newRS, d)
}
// If we need to create a new RS, create it now.
if newRS == nil {
newRS, oldRSs, err = dc.getAllReplicaSetsAndSyncRevision(d, rsList, podMap, true)
if err != nil {
return err
}
allRSs = append(oldRSs, newRS)
}
// scale up new replica set.
if _, err := dc.scaleUpNewReplicaSetForRecreate(newRS, d); err != nil {
return err
}
if util.DeploymentComplete(d, &d.Status) {
if err := dc.cleanupDeployment(oldRSs, d); err != nil {
return err
}
}
// Sync deployment status.
return dc.syncRolloutStatus(allRSs, newRS, d)
}
// scaleDownOldReplicaSetsForRecreate scales down old replica sets when deployment strategy is "Recreate".
func (dc *DeploymentController) scaleDownOldReplicaSetsForRecreate(oldRSs []*apps.ReplicaSet, deployment *apps.Deployment) (bool, error) {
scaled := false
for i := range oldRSs {
rs := oldRSs[i]
// Scaling not required.
if *(rs.Spec.Replicas) == 0 {
continue
}
scaledRS, updatedRS, err := dc.scaleReplicaSetAndRecordEvent(rs, 0, deployment)
if err != nil {
return false, err
}
if scaledRS {
oldRSs[i] = updatedRS
scaled = true
}
}
return scaled, nil
}
// oldPodsRunning returns whether there are old pods running or any of the old ReplicaSets thinks that it runs pods.
func oldPodsRunning(newRS *apps.ReplicaSet, oldRSs []*apps.ReplicaSet, podMap map[types.UID]*v1.PodList) bool {
if oldPods := util.GetActualReplicaCountForReplicaSets(oldRSs); oldPods > 0 {
return true
}
for rsUID, podList := range podMap {
// If the pods belong to the new ReplicaSet, ignore.
if newRS != nil && newRS.UID == rsUID {
continue
}
for _, pod := range podList.Items {
switch pod.Status.Phase {
case v1.PodFailed, v1.PodSucceeded:
// Don't count pods in terminal state.
continue
case v1.PodUnknown:
// This happens in situation like when the node is temporarily disconnected from the cluster.
// If we can't be sure that the pod is not running, we have to count it.
return true
default:
// Pod is not in terminal phase.
return true
}
}
}
return false
}
// scaleUpNewReplicaSetForRecreate scales up new replica set when deployment strategy is "Recreate".
func (dc *DeploymentController) scaleUpNewReplicaSetForRecreate(newRS *apps.ReplicaSet, deployment *apps.Deployment) (bool, error) {
scaled, _, err := dc.scaleReplicaSetAndRecordEvent(newRS, *(deployment.Spec.Replicas), deployment)
return scaled, err
}

246
vendor/k8s.io/kubernetes/pkg/controller/deployment/recreate_test.go generated vendored
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@ -1,246 +0,0 @@
/*
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 deployment
import (
"fmt"
"testing"
apps "k8s.io/api/apps/v1"
"k8s.io/api/core/v1"
"k8s.io/apimachinery/pkg/runtime"
"k8s.io/apimachinery/pkg/types"
"k8s.io/client-go/informers"
"k8s.io/client-go/kubernetes/fake"
"k8s.io/client-go/tools/record"
"k8s.io/kubernetes/pkg/controller"
)
func TestScaleDownOldReplicaSets(t *testing.T) {
tests := []struct {
oldRSSizes []int
d *apps.Deployment
}{
{
oldRSSizes: []int{3},
d: newDeployment("foo", 3, nil, nil, nil, map[string]string{"foo": "bar"}),
},
}
for i := range tests {
t.Logf("running scenario %d", i)
test := tests[i]
var oldRSs []*apps.ReplicaSet
var expected []runtime.Object
for n, size := range test.oldRSSizes {
rs := newReplicaSet(test.d, fmt.Sprintf("%s-%d", test.d.Name, n), size)
oldRSs = append(oldRSs, rs)
rsCopy := rs.DeepCopy()
zero := int32(0)
rsCopy.Spec.Replicas = &zero
expected = append(expected, rsCopy)
if *(oldRSs[n].Spec.Replicas) == *(expected[n].(*apps.ReplicaSet).Spec.Replicas) {
t.Errorf("broken test - original and expected RS have the same size")
}
}
kc := fake.NewSimpleClientset(expected...)
informers := informers.NewSharedInformerFactory(kc, controller.NoResyncPeriodFunc())
c, err := NewDeploymentController(informers.Apps().V1().Deployments(), informers.Apps().V1().ReplicaSets(), informers.Core().V1().Pods(), kc)
if err != nil {
t.Fatalf("error creating Deployment controller: %v", err)
}
c.eventRecorder = &record.FakeRecorder{}
c.scaleDownOldReplicaSetsForRecreate(oldRSs, test.d)
for j := range oldRSs {
rs := oldRSs[j]
if *rs.Spec.Replicas != 0 {
t.Errorf("rs %q has non-zero replicas", rs.Name)
}
}
}
}
func TestOldPodsRunning(t *testing.T) {
tests := []struct {
name string
newRS *apps.ReplicaSet
oldRSs []*apps.ReplicaSet
podMap map[types.UID]*v1.PodList
hasOldPodsRunning bool
}{
{
name: "no old RSs",
hasOldPodsRunning: false,
},
{
name: "old RSs with running pods",
oldRSs: []*apps.ReplicaSet{rsWithUID("some-uid"), rsWithUID("other-uid")},
podMap: podMapWithUIDs([]string{"some-uid", "other-uid"}),
hasOldPodsRunning: true,
},
{
name: "old RSs without pods but with non-zero status replicas",
oldRSs: []*apps.ReplicaSet{newRSWithStatus("rs-1", 0, 1, nil)},
hasOldPodsRunning: true,
},
{
name: "old RSs without pods or non-zero status replicas",
oldRSs: []*apps.ReplicaSet{newRSWithStatus("rs-1", 0, 0, nil)},
hasOldPodsRunning: false,
},
{
name: "old RSs with zero status replicas but pods in terminal state are present",
oldRSs: []*apps.ReplicaSet{newRSWithStatus("rs-1", 0, 0, nil)},
podMap: map[types.UID]*v1.PodList{
"uid-1": {
Items: []v1.Pod{
{
Status: v1.PodStatus{
Phase: v1.PodFailed,
},
},
{
Status: v1.PodStatus{
Phase: v1.PodSucceeded,
},
},
},
},
},
hasOldPodsRunning: false,
},
{
name: "old RSs with zero status replicas but pod in unknown phase present",
oldRSs: []*apps.ReplicaSet{newRSWithStatus("rs-1", 0, 0, nil)},
podMap: map[types.UID]*v1.PodList{
"uid-1": {
Items: []v1.Pod{
{
Status: v1.PodStatus{
Phase: v1.PodUnknown,
},
},
},
},
},
hasOldPodsRunning: true,
},
{
name: "old RSs with zero status replicas with pending pod present",
oldRSs: []*apps.ReplicaSet{newRSWithStatus("rs-1", 0, 0, nil)},
podMap: map[types.UID]*v1.PodList{
"uid-1": {
Items: []v1.Pod{
{
Status: v1.PodStatus{
Phase: v1.PodPending,
},
},
},
},
},
hasOldPodsRunning: true,
},
{
name: "old RSs with zero status replicas with running pod present",
oldRSs: []*apps.ReplicaSet{newRSWithStatus("rs-1", 0, 0, nil)},
podMap: map[types.UID]*v1.PodList{
"uid-1": {
Items: []v1.Pod{
{
Status: v1.PodStatus{
Phase: v1.PodRunning,
},
},
},
},
},
hasOldPodsRunning: true,
},
{
name: "old RSs with zero status replicas but pods in terminal state and pending are present",
oldRSs: []*apps.ReplicaSet{newRSWithStatus("rs-1", 0, 0, nil)},
podMap: map[types.UID]*v1.PodList{
"uid-1": {
Items: []v1.Pod{
{
Status: v1.PodStatus{
Phase: v1.PodFailed,
},
},
{
Status: v1.PodStatus{
Phase: v1.PodSucceeded,
},
},
},
},
"uid-2": {
Items: []v1.Pod{},
},
"uid-3": {
Items: []v1.Pod{
{
Status: v1.PodStatus{
Phase: v1.PodPending,
},
},
},
},
},
hasOldPodsRunning: true,
},
}
for _, test := range tests {
t.Run(test.name, func(t *testing.T) {
if expected, got := test.hasOldPodsRunning, oldPodsRunning(test.newRS, test.oldRSs, test.podMap); expected != got {
t.Errorf("%s: expected %t, got %t", test.name, expected, got)
}
})
}
}
func rsWithUID(uid string) *apps.ReplicaSet {
d := newDeployment("foo", 1, nil, nil, nil, map[string]string{"foo": "bar"})
rs := newReplicaSet(d, fmt.Sprintf("foo-%s", uid), 0)
rs.UID = types.UID(uid)
return rs
}
func podMapWithUIDs(uids []string) map[types.UID]*v1.PodList {
podMap := make(map[types.UID]*v1.PodList)
for _, uid := range uids {
podMap[types.UID(uid)] = &v1.PodList{
Items: []v1.Pod{
{ /* supposedly a pod */ },
{ /* supposedly another pod pod */ },
},
}
}
return podMap
}

148
vendor/k8s.io/kubernetes/pkg/controller/deployment/rollback.go generated vendored
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@ -1,148 +0,0 @@
/*
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 deployment
import (
"fmt"
"strconv"
"github.com/golang/glog"
apps "k8s.io/api/apps/v1"
"k8s.io/api/core/v1"
extensions "k8s.io/api/extensions/v1beta1"
"k8s.io/apimachinery/pkg/types"
deploymentutil "k8s.io/kubernetes/pkg/controller/deployment/util"
)
// rollback the deployment to the specified revision. In any case cleanup the rollback spec.
func (dc *DeploymentController) rollback(d *apps.Deployment, rsList []*apps.ReplicaSet, podMap map[types.UID]*v1.PodList) error {
newRS, allOldRSs, err := dc.getAllReplicaSetsAndSyncRevision(d, rsList, podMap, true)
if err != nil {
return err
}
allRSs := append(allOldRSs, newRS)
rollbackTo := getRollbackTo(d)
// If rollback revision is 0, rollback to the last revision
if rollbackTo.Revision == 0 {
if rollbackTo.Revision = deploymentutil.LastRevision(allRSs); rollbackTo.Revision == 0 {
// If we still can't find the last revision, gives up rollback
dc.emitRollbackWarningEvent(d, deploymentutil.RollbackRevisionNotFound, "Unable to find last revision.")
// Gives up rollback
return dc.updateDeploymentAndClearRollbackTo(d)
}
}
for _, rs := range allRSs {
v, err := deploymentutil.Revision(rs)
if err != nil {
glog.V(4).Infof("Unable to extract revision from deployment's replica set %q: %v", rs.Name, err)
continue
}
if v == rollbackTo.Revision {
glog.V(4).Infof("Found replica set %q with desired revision %d", rs.Name, v)
// rollback by copying podTemplate.Spec from the replica set
// revision number will be incremented during the next getAllReplicaSetsAndSyncRevision call
// no-op if the spec matches current deployment's podTemplate.Spec
performedRollback, err := dc.rollbackToTemplate(d, rs)
if performedRollback && err == nil {
dc.emitRollbackNormalEvent(d, fmt.Sprintf("Rolled back deployment %q to revision %d", d.Name, rollbackTo.Revision))
}
return err
}
}
dc.emitRollbackWarningEvent(d, deploymentutil.RollbackRevisionNotFound, "Unable to find the revision to rollback to.")
// Gives up rollback
return dc.updateDeploymentAndClearRollbackTo(d)
}
// rollbackToTemplate compares the templates of the provided deployment and replica set and
// updates the deployment with the replica set template in case they are different. It also
// cleans up the rollback spec so subsequent requeues of the deployment won't end up in here.
func (dc *DeploymentController) rollbackToTemplate(d *apps.Deployment, rs *apps.ReplicaSet) (bool, error) {
performedRollback := false
if !deploymentutil.EqualIgnoreHash(&d.Spec.Template, &rs.Spec.Template) {
glog.V(4).Infof("Rolling back deployment %q to template spec %+v", d.Name, rs.Spec.Template.Spec)
deploymentutil.SetFromReplicaSetTemplate(d, rs.Spec.Template)
// set RS (the old RS we'll rolling back to) annotations back to the deployment;
// otherwise, the deployment's current annotations (should be the same as current new RS) will be copied to the RS after the rollback.
//
// For example,
// A Deployment has old RS1 with annotation {change-cause:create}, and new RS2 {change-cause:edit}.
// Note that both annotations are copied from Deployment, and the Deployment should be annotated {change-cause:edit} as well.
// Now, rollback Deployment to RS1, we should update Deployment's pod-template and also copy annotation from RS1.
// Deployment is now annotated {change-cause:create}, and we have new RS1 {change-cause:create}, old RS2 {change-cause:edit}.
//
// If we don't copy the annotations back from RS to deployment on rollback, the Deployment will stay as {change-cause:edit},
// and new RS1 becomes {change-cause:edit} (copied from deployment after rollback), old RS2 {change-cause:edit}, which is not correct.
deploymentutil.SetDeploymentAnnotationsTo(d, rs)
performedRollback = true
} else {
glog.V(4).Infof("Rolling back to a revision that contains the same template as current deployment %q, skipping rollback...", d.Name)
eventMsg := fmt.Sprintf("The rollback revision contains the same template as current deployment %q", d.Name)
dc.emitRollbackWarningEvent(d, deploymentutil.RollbackTemplateUnchanged, eventMsg)
}
return performedRollback, dc.updateDeploymentAndClearRollbackTo(d)
}
func (dc *DeploymentController) emitRollbackWarningEvent(d *apps.Deployment, reason, message string) {
dc.eventRecorder.Eventf(d, v1.EventTypeWarning, reason, message)
}
func (dc *DeploymentController) emitRollbackNormalEvent(d *apps.Deployment, message string) {
dc.eventRecorder.Eventf(d, v1.EventTypeNormal, deploymentutil.RollbackDone, message)
}
// updateDeploymentAndClearRollbackTo sets .spec.rollbackTo to nil and update the input deployment
// It is assumed that the caller will have updated the deployment template appropriately (in case
// we want to rollback).
func (dc *DeploymentController) updateDeploymentAndClearRollbackTo(d *apps.Deployment) error {
glog.V(4).Infof("Cleans up rollbackTo of deployment %q", d.Name)
setRollbackTo(d, nil)
_, err := dc.client.AppsV1().Deployments(d.Namespace).Update(d)
return err
}
// TODO: Remove this when extensions/v1beta1 and apps/v1beta1 Deployment are dropped.
func getRollbackTo(d *apps.Deployment) *extensions.RollbackConfig {
// Extract the annotation used for round-tripping the deprecated RollbackTo field.
revision := d.Annotations[apps.DeprecatedRollbackTo]
if revision == "" {
return nil
}
revision64, err := strconv.ParseInt(revision, 10, 64)
if err != nil {
// If it's invalid, ignore it.
return nil
}
return &extensions.RollbackConfig{
Revision: revision64,
}
}
// TODO: Remove this when extensions/v1beta1 and apps/v1beta1 Deployment are dropped.
func setRollbackTo(d *apps.Deployment, rollbackTo *extensions.RollbackConfig) {
if rollbackTo == nil {
delete(d.Annotations, apps.DeprecatedRollbackTo)
return
}
if d.Annotations == nil {
d.Annotations = make(map[string]string)
}
d.Annotations[apps.DeprecatedRollbackTo] = strconv.FormatInt(rollbackTo.Revision, 10)
}

235
vendor/k8s.io/kubernetes/pkg/controller/deployment/rolling.go generated vendored
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@ -1,235 +0,0 @@
/*
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 deployment
import (
"fmt"
"sort"
"github.com/golang/glog"
apps "k8s.io/api/apps/v1"
"k8s.io/api/core/v1"
"k8s.io/apimachinery/pkg/types"
"k8s.io/client-go/util/integer"
"k8s.io/kubernetes/pkg/controller"
deploymentutil "k8s.io/kubernetes/pkg/controller/deployment/util"
)
// rolloutRolling implements the logic for rolling a new replica set.
func (dc *DeploymentController) rolloutRolling(d *apps.Deployment, rsList []*apps.ReplicaSet, podMap map[types.UID]*v1.PodList) error {
newRS, oldRSs, err := dc.getAllReplicaSetsAndSyncRevision(d, rsList, podMap, true)
if err != nil {
return err
}
allRSs := append(oldRSs, newRS)
// Scale up, if we can.
scaledUp, err := dc.reconcileNewReplicaSet(allRSs, newRS, d)
if err != nil {
return err
}
if scaledUp {
// Update DeploymentStatus
return dc.syncRolloutStatus(allRSs, newRS, d)
}
// Scale down, if we can.
scaledDown, err := dc.reconcileOldReplicaSets(allRSs, controller.FilterActiveReplicaSets(oldRSs), newRS, d)
if err != nil {
return err
}
if scaledDown {
// Update DeploymentStatus
return dc.syncRolloutStatus(allRSs, newRS, d)
}
if deploymentutil.DeploymentComplete(d, &d.Status) {
if err := dc.cleanupDeployment(oldRSs, d); err != nil {
return err
}
}
// Sync deployment status
return dc.syncRolloutStatus(allRSs, newRS, d)
}
func (dc *DeploymentController) reconcileNewReplicaSet(allRSs []*apps.ReplicaSet, newRS *apps.ReplicaSet, deployment *apps.Deployment) (bool, error) {
if *(newRS.Spec.Replicas) == *(deployment.Spec.Replicas) {
// Scaling not required.
return false, nil
}
if *(newRS.Spec.Replicas) > *(deployment.Spec.Replicas) {
// Scale down.
scaled, _, err := dc.scaleReplicaSetAndRecordEvent(newRS, *(deployment.Spec.Replicas), deployment)
return scaled, err
}
newReplicasCount, err := deploymentutil.NewRSNewReplicas(deployment, allRSs, newRS)
if err != nil {
return false, err
}
scaled, _, err := dc.scaleReplicaSetAndRecordEvent(newRS, newReplicasCount, deployment)
return scaled, err
}
func (dc *DeploymentController) reconcileOldReplicaSets(allRSs []*apps.ReplicaSet, oldRSs []*apps.ReplicaSet, newRS *apps.ReplicaSet, deployment *apps.Deployment) (bool, error) {
oldPodsCount := deploymentutil.GetReplicaCountForReplicaSets(oldRSs)
if oldPodsCount == 0 {
// Can't scale down further
return false, nil
}
allPodsCount := deploymentutil.GetReplicaCountForReplicaSets(allRSs)
glog.V(4).Infof("New replica set %s/%s has %d available pods.", newRS.Namespace, newRS.Name, newRS.Status.AvailableReplicas)
maxUnavailable := deploymentutil.MaxUnavailable(*deployment)
// Check if we can scale down. We can scale down in the following 2 cases:
// * Some old replica sets have unhealthy replicas, we could safely scale down those unhealthy replicas since that won't further
// increase unavailability.
// * New replica set has scaled up and it's replicas becomes ready, then we can scale down old replica sets in a further step.
//
// maxScaledDown := allPodsCount - minAvailable - newReplicaSetPodsUnavailable
// take into account not only maxUnavailable and any surge pods that have been created, but also unavailable pods from
// the newRS, so that the unavailable pods from the newRS would not make us scale down old replica sets in a further
// step(that will increase unavailability).
//
// Concrete example:
//
// * 10 replicas
// * 2 maxUnavailable (absolute number, not percent)
// * 3 maxSurge (absolute number, not percent)
//
// case 1:
// * Deployment is updated, newRS is created with 3 replicas, oldRS is scaled down to 8, and newRS is scaled up to 5.
// * The new replica set pods crashloop and never become available.
// * allPodsCount is 13. minAvailable is 8. newRSPodsUnavailable is 5.
// * A node fails and causes one of the oldRS pods to become unavailable. However, 13 - 8 - 5 = 0, so the oldRS won't be scaled down.
// * The user notices the crashloop and does kubectl rollout undo to rollback.
// * newRSPodsUnavailable is 1, since we rolled back to the good replica set, so maxScaledDown = 13 - 8 - 1 = 4. 4 of the crashlooping pods will be scaled down.
// * The total number of pods will then be 9 and the newRS can be scaled up to 10.
//
// case 2:
// Same example, but pushing a new pod template instead of rolling back (aka "roll over"):
// * The new replica set created must start with 0 replicas because allPodsCount is already at 13.
// * However, newRSPodsUnavailable would also be 0, so the 2 old replica sets could be scaled down by 5 (13 - 8 - 0), which would then
// allow the new replica set to be scaled up by 5.
minAvailable := *(deployment.Spec.Replicas) - maxUnavailable
newRSUnavailablePodCount := *(newRS.Spec.Replicas) - newRS.Status.AvailableReplicas
maxScaledDown := allPodsCount - minAvailable - newRSUnavailablePodCount
if maxScaledDown <= 0 {
return false, nil
}
// Clean up unhealthy replicas first, otherwise unhealthy replicas will block deployment
// and cause timeout. See https://github.com/kubernetes/kubernetes/issues/16737
oldRSs, cleanupCount, err := dc.cleanupUnhealthyReplicas(oldRSs, deployment, maxScaledDown)
if err != nil {
return false, nil
}
glog.V(4).Infof("Cleaned up unhealthy replicas from old RSes by %d", cleanupCount)
// Scale down old replica sets, need check maxUnavailable to ensure we can scale down
allRSs = append(oldRSs, newRS)
scaledDownCount, err := dc.scaleDownOldReplicaSetsForRollingUpdate(allRSs, oldRSs, deployment)
if err != nil {
return false, nil
}
glog.V(4).Infof("Scaled down old RSes of deployment %s by %d", deployment.Name, scaledDownCount)
totalScaledDown := cleanupCount + scaledDownCount
return totalScaledDown > 0, nil
}
// cleanupUnhealthyReplicas will scale down old replica sets with unhealthy replicas, so that all unhealthy replicas will be deleted.
func (dc *DeploymentController) cleanupUnhealthyReplicas(oldRSs []*apps.ReplicaSet, deployment *apps.Deployment, maxCleanupCount int32) ([]*apps.ReplicaSet, int32, error) {
sort.Sort(controller.ReplicaSetsByCreationTimestamp(oldRSs))
// Safely scale down all old replica sets with unhealthy replicas. Replica set will sort the pods in the order
// such that not-ready < ready, unscheduled < scheduled, and pending < running. This ensures that unhealthy replicas will
// been deleted first and won't increase unavailability.
totalScaledDown := int32(0)
for i, targetRS := range oldRSs {
if totalScaledDown >= maxCleanupCount {
break
}
if *(targetRS.Spec.Replicas) == 0 {
// cannot scale down this replica set.
continue
}
glog.V(4).Infof("Found %d available pods in old RS %s/%s", targetRS.Status.AvailableReplicas, targetRS.Namespace, targetRS.Name)
if *(targetRS.Spec.Replicas) == targetRS.Status.AvailableReplicas {
// no unhealthy replicas found, no scaling required.
continue
}
scaledDownCount := int32(integer.IntMin(int(maxCleanupCount-totalScaledDown), int(*(targetRS.Spec.Replicas)-targetRS.Status.AvailableReplicas)))
newReplicasCount := *(targetRS.Spec.Replicas) - scaledDownCount
if newReplicasCount > *(targetRS.Spec.Replicas) {
return nil, 0, fmt.Errorf("when cleaning up unhealthy replicas, got invalid request to scale down %s/%s %d -> %d", targetRS.Namespace, targetRS.Name, *(targetRS.Spec.Replicas), newReplicasCount)
}
_, updatedOldRS, err := dc.scaleReplicaSetAndRecordEvent(targetRS, newReplicasCount, deployment)
if err != nil {
return nil, totalScaledDown, err
}
totalScaledDown += scaledDownCount
oldRSs[i] = updatedOldRS
}
return oldRSs, totalScaledDown, nil
}
// scaleDownOldReplicaSetsForRollingUpdate scales down old replica sets when deployment strategy is "RollingUpdate".
// Need check maxUnavailable to ensure availability
func (dc *DeploymentController) scaleDownOldReplicaSetsForRollingUpdate(allRSs []*apps.ReplicaSet, oldRSs []*apps.ReplicaSet, deployment *apps.Deployment) (int32, error) {
maxUnavailable := deploymentutil.MaxUnavailable(*deployment)
// Check if we can scale down.
minAvailable := *(deployment.Spec.Replicas) - maxUnavailable
// Find the number of available pods.
availablePodCount := deploymentutil.GetAvailableReplicaCountForReplicaSets(allRSs)
if availablePodCount <= minAvailable {
// Cannot scale down.
return 0, nil
}
glog.V(4).Infof("Found %d available pods in deployment %s, scaling down old RSes", availablePodCount, deployment.Name)
sort.Sort(controller.ReplicaSetsByCreationTimestamp(oldRSs))
totalScaledDown := int32(0)
totalScaleDownCount := availablePodCount - minAvailable
for _, targetRS := range oldRSs {
if totalScaledDown >= totalScaleDownCount {
// No further scaling required.
break
}
if *(targetRS.Spec.Replicas) == 0 {
// cannot scale down this ReplicaSet.
continue
}
// Scale down.
scaleDownCount := int32(integer.IntMin(int(*(targetRS.Spec.Replicas)), int(totalScaleDownCount-totalScaledDown)))
newReplicasCount := *(targetRS.Spec.Replicas) - scaleDownCount
if newReplicasCount > *(targetRS.Spec.Replicas) {
return 0, fmt.Errorf("when scaling down old RS, got invalid request to scale down %s/%s %d -> %d", targetRS.Namespace, targetRS.Name, *(targetRS.Spec.Replicas), newReplicasCount)
}
_, _, err := dc.scaleReplicaSetAndRecordEvent(targetRS, newReplicasCount, deployment)
if err != nil {
return totalScaledDown, err
}
totalScaledDown += scaleDownCount
}
return totalScaledDown, nil
}

379
vendor/k8s.io/kubernetes/pkg/controller/deployment/rolling_test.go generated vendored
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@ -1,379 +0,0 @@
/*
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 deployment
import (
"testing"
apps "k8s.io/api/apps/v1"
"k8s.io/apimachinery/pkg/util/intstr"
"k8s.io/client-go/kubernetes/fake"
core "k8s.io/client-go/testing"
"k8s.io/client-go/tools/record"
)
func TestDeploymentController_reconcileNewReplicaSet(t *testing.T) {
tests := []struct {
deploymentReplicas int
maxSurge intstr.IntOrString
oldReplicas int
newReplicas int
scaleExpected bool
expectedNewReplicas int
}{
{
// Should not scale up.
deploymentReplicas: 10,
maxSurge: intstr.FromInt(0),
oldReplicas: 10,
newReplicas: 0,
scaleExpected: false,
},
{
deploymentReplicas: 10,
maxSurge: intstr.FromInt(2),
oldReplicas: 10,
newReplicas: 0,
scaleExpected: true,
expectedNewReplicas: 2,
},
{
deploymentReplicas: 10,
maxSurge: intstr.FromInt(2),
oldReplicas: 5,
newReplicas: 0,
scaleExpected: true,
expectedNewReplicas: 7,
},
{
deploymentReplicas: 10,
maxSurge: intstr.FromInt(2),
oldReplicas: 10,
newReplicas: 2,
scaleExpected: false,
},
{
// Should scale down.
deploymentReplicas: 10,
maxSurge: intstr.FromInt(2),
oldReplicas: 2,
newReplicas: 11,
scaleExpected: true,
expectedNewReplicas: 10,
},
}
for i := range tests {
test := tests[i]
t.Logf("executing scenario %d", i)
newRS := rs("foo-v2", test.newReplicas, nil, noTimestamp)
oldRS := rs("foo-v2", test.oldReplicas, nil, noTimestamp)
allRSs := []*apps.ReplicaSet{newRS, oldRS}
maxUnavailable := intstr.FromInt(0)
deployment := newDeployment("foo", test.deploymentReplicas, nil, &test.maxSurge, &maxUnavailable, map[string]string{"foo": "bar"})
fake := fake.Clientset{}
controller := &DeploymentController{
client: &fake,
eventRecorder: &record.FakeRecorder{},
}
scaled, err := controller.reconcileNewReplicaSet(allRSs, newRS, deployment)
if err != nil {
t.Errorf("unexpected error: %v", err)
continue
}
if !test.scaleExpected {
if scaled || len(fake.Actions()) > 0 {
t.Errorf("unexpected scaling: %v", fake.Actions())
}
continue
}
if test.scaleExpected && !scaled {
t.Errorf("expected scaling to occur")
continue
}
if len(fake.Actions()) != 1 {
t.Errorf("expected 1 action during scale, got: %v", fake.Actions())
continue
}
updated := fake.Actions()[0].(core.UpdateAction).GetObject().(*apps.ReplicaSet)
if e, a := test.expectedNewReplicas, int(*(updated.Spec.Replicas)); e != a {
t.Errorf("expected update to %d replicas, got %d", e, a)
}
}
}
func TestDeploymentController_reconcileOldReplicaSets(t *testing.T) {
tests := []struct {
deploymentReplicas int
maxUnavailable intstr.IntOrString
oldReplicas int
newReplicas int
readyPodsFromOldRS int
readyPodsFromNewRS int
scaleExpected bool
expectedOldReplicas int
}{
{
deploymentReplicas: 10,
maxUnavailable: intstr.FromInt(0),
oldReplicas: 10,
newReplicas: 0,
readyPodsFromOldRS: 10,
readyPodsFromNewRS: 0,
scaleExpected: true,
expectedOldReplicas: 9,
},
{
deploymentReplicas: 10,
maxUnavailable: intstr.FromInt(2),
oldReplicas: 10,
newReplicas: 0,
readyPodsFromOldRS: 10,
readyPodsFromNewRS: 0,
scaleExpected: true,
expectedOldReplicas: 8,
},
{ // expect unhealthy replicas from old replica sets been cleaned up
deploymentReplicas: 10,
maxUnavailable: intstr.FromInt(2),
oldReplicas: 10,
newReplicas: 0,
readyPodsFromOldRS: 8,
readyPodsFromNewRS: 0,
scaleExpected: true,
expectedOldReplicas: 8,
},
{ // expect 1 unhealthy replica from old replica sets been cleaned up, and 1 ready pod been scaled down
deploymentReplicas: 10,
maxUnavailable: intstr.FromInt(2),
oldReplicas: 10,
newReplicas: 0,
readyPodsFromOldRS: 9,
readyPodsFromNewRS: 0,
scaleExpected: true,
expectedOldReplicas: 8,
},
{ // the unavailable pods from the newRS would not make us scale down old RSs in a further step
deploymentReplicas: 10,
maxUnavailable: intstr.FromInt(2),
oldReplicas: 8,
newReplicas: 2,
readyPodsFromOldRS: 8,
readyPodsFromNewRS: 0,
scaleExpected: false,
},
}
for i := range tests {
test := tests[i]
t.Logf("executing scenario %d", i)
newSelector := map[string]string{"foo": "new"}
oldSelector := map[string]string{"foo": "old"}
newRS := rs("foo-new", test.newReplicas, newSelector, noTimestamp)
newRS.Status.AvailableReplicas = int32(test.readyPodsFromNewRS)
oldRS := rs("foo-old", test.oldReplicas, oldSelector, noTimestamp)
oldRS.Status.AvailableReplicas = int32(test.readyPodsFromOldRS)
oldRSs := []*apps.ReplicaSet{oldRS}
allRSs := []*apps.ReplicaSet{oldRS, newRS}
maxSurge := intstr.FromInt(0)
deployment := newDeployment("foo", test.deploymentReplicas, nil, &maxSurge, &test.maxUnavailable, newSelector)
fakeClientset := fake.Clientset{}
controller := &DeploymentController{
client: &fakeClientset,
eventRecorder: &record.FakeRecorder{},
}
scaled, err := controller.reconcileOldReplicaSets(allRSs, oldRSs, newRS, deployment)
if err != nil {
t.Errorf("unexpected error: %v", err)
continue
}
if !test.scaleExpected && scaled {
t.Errorf("unexpected scaling: %v", fakeClientset.Actions())
}
if test.scaleExpected && !scaled {
t.Errorf("expected scaling to occur")
continue
}
continue
}
}
func TestDeploymentController_cleanupUnhealthyReplicas(t *testing.T) {
tests := []struct {
oldReplicas int
readyPods int
unHealthyPods int
maxCleanupCount int
cleanupCountExpected int
}{
{
oldReplicas: 10,
readyPods: 8,
unHealthyPods: 2,
maxCleanupCount: 1,
cleanupCountExpected: 1,
},
{
oldReplicas: 10,
readyPods: 8,
unHealthyPods: 2,
maxCleanupCount: 3,
cleanupCountExpected: 2,
},
{
oldReplicas: 10,
readyPods: 8,
unHealthyPods: 2,
maxCleanupCount: 0,
cleanupCountExpected: 0,
},
{
oldReplicas: 10,
readyPods: 10,
unHealthyPods: 0,
maxCleanupCount: 3,
cleanupCountExpected: 0,
},
}
for i, test := range tests {
t.Logf("executing scenario %d", i)
oldRS := rs("foo-v2", test.oldReplicas, nil, noTimestamp)
oldRS.Status.AvailableReplicas = int32(test.readyPods)
oldRSs := []*apps.ReplicaSet{oldRS}
maxSurge := intstr.FromInt(2)
maxUnavailable := intstr.FromInt(2)
deployment := newDeployment("foo", 10, nil, &maxSurge, &maxUnavailable, nil)
fakeClientset := fake.Clientset{}
controller := &DeploymentController{
client: &fakeClientset,
eventRecorder: &record.FakeRecorder{},
}
_, cleanupCount, err := controller.cleanupUnhealthyReplicas(oldRSs, deployment, int32(test.maxCleanupCount))
if err != nil {
t.Errorf("unexpected error: %v", err)
continue
}
if int(cleanupCount) != test.cleanupCountExpected {
t.Errorf("expected %v unhealthy replicas been cleaned up, got %v", test.cleanupCountExpected, cleanupCount)
continue
}
}
}
func TestDeploymentController_scaleDownOldReplicaSetsForRollingUpdate(t *testing.T) {
tests := []struct {
deploymentReplicas int
maxUnavailable intstr.IntOrString
readyPods int
oldReplicas int
scaleExpected bool
expectedOldReplicas int
}{
{
deploymentReplicas: 10,
maxUnavailable: intstr.FromInt(0),
readyPods: 10,
oldReplicas: 10,
scaleExpected: true,
expectedOldReplicas: 9,
},
{
deploymentReplicas: 10,
maxUnavailable: intstr.FromInt(2),
readyPods: 10,
oldReplicas: 10,
scaleExpected: true,
expectedOldReplicas: 8,
},
{
deploymentReplicas: 10,
maxUnavailable: intstr.FromInt(2),
readyPods: 8,
oldReplicas: 10,
scaleExpected: false,
},
{
deploymentReplicas: 10,
maxUnavailable: intstr.FromInt(2),
readyPods: 10,
oldReplicas: 0,
scaleExpected: false,
},
{
deploymentReplicas: 10,
maxUnavailable: intstr.FromInt(2),
readyPods: 1,
oldReplicas: 10,
scaleExpected: false,
},
}
for i := range tests {
test := tests[i]
t.Logf("executing scenario %d", i)
oldRS := rs("foo-v2", test.oldReplicas, nil, noTimestamp)
oldRS.Status.AvailableReplicas = int32(test.readyPods)
allRSs := []*apps.ReplicaSet{oldRS}
oldRSs := []*apps.ReplicaSet{oldRS}
maxSurge := intstr.FromInt(0)
deployment := newDeployment("foo", test.deploymentReplicas, nil, &maxSurge, &test.maxUnavailable, map[string]string{"foo": "bar"})
fakeClientset := fake.Clientset{}
controller := &DeploymentController{
client: &fakeClientset,
eventRecorder: &record.FakeRecorder{},
}
scaled, err := controller.scaleDownOldReplicaSetsForRollingUpdate(allRSs, oldRSs, deployment)
if err != nil {
t.Errorf("unexpected error: %v", err)
continue
}
if !test.scaleExpected {
if scaled != 0 {
t.Errorf("unexpected scaling: %v", fakeClientset.Actions())
}
continue
}
if test.scaleExpected && scaled == 0 {
t.Errorf("expected scaling to occur; actions: %v", fakeClientset.Actions())
continue
}
// There are both list and update actions logged, so extract the update
// action for verification.
var updateAction core.UpdateAction
for _, action := range fakeClientset.Actions() {
switch a := action.(type) {
case core.UpdateAction:
if updateAction != nil {
t.Errorf("expected only 1 update action; had %v and found %v", updateAction, a)
} else {
updateAction = a
}
}
}
if updateAction == nil {
t.Errorf("expected an update action")
continue
}
updated := updateAction.GetObject().(*apps.ReplicaSet)
if e, a := test.expectedOldReplicas, int(*(updated.Spec.Replicas)); e != a {
t.Errorf("expected update to %d replicas, got %d", e, a)
}
}
}

539
vendor/k8s.io/kubernetes/pkg/controller/deployment/sync.go generated vendored
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@ -1,539 +0,0 @@
/*
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 deployment
import (
"fmt"
"reflect"
"sort"
"strconv"
"github.com/golang/glog"
apps "k8s.io/api/apps/v1"
"k8s.io/api/core/v1"
"k8s.io/apimachinery/pkg/api/errors"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/types"
"k8s.io/apimachinery/pkg/util/rand"
"k8s.io/kubernetes/pkg/controller"
deploymentutil "k8s.io/kubernetes/pkg/controller/deployment/util"
labelsutil "k8s.io/kubernetes/pkg/util/labels"
)
// syncStatusOnly only updates Deployments Status and doesn't take any mutating actions.
func (dc *DeploymentController) syncStatusOnly(d *apps.Deployment, rsList []*apps.ReplicaSet, podMap map[types.UID]*v1.PodList) error {
newRS, oldRSs, err := dc.getAllReplicaSetsAndSyncRevision(d, rsList, podMap, false)
if err != nil {
return err
}
allRSs := append(oldRSs, newRS)
return dc.syncDeploymentStatus(allRSs, newRS, d)
}
// sync is responsible for reconciling deployments on scaling events or when they
// are paused.
func (dc *DeploymentController) sync(d *apps.Deployment, rsList []*apps.ReplicaSet, podMap map[types.UID]*v1.PodList) error {
newRS, oldRSs, err := dc.getAllReplicaSetsAndSyncRevision(d, rsList, podMap, false)
if err != nil {
return err
}
if err := dc.scale(d, newRS, oldRSs); err != nil {
// If we get an error while trying to scale, the deployment will be requeued
// so we can abort this resync
return err
}
// Clean up the deployment when it's paused and no rollback is in flight.
if d.Spec.Paused && getRollbackTo(d) == nil {
if err := dc.cleanupDeployment(oldRSs, d); err != nil {
return err
}
}
allRSs := append(oldRSs, newRS)
return dc.syncDeploymentStatus(allRSs, newRS, d)
}
// checkPausedConditions checks if the given deployment is paused or not and adds an appropriate condition.
// These conditions are needed so that we won't accidentally report lack of progress for resumed deployments
// that were paused for longer than progressDeadlineSeconds.
func (dc *DeploymentController) checkPausedConditions(d *apps.Deployment) error {
if d.Spec.ProgressDeadlineSeconds == nil {
return nil
}
cond := deploymentutil.GetDeploymentCondition(d.Status, apps.DeploymentProgressing)
if cond != nil && cond.Reason == deploymentutil.TimedOutReason {
// If we have reported lack of progress, do not overwrite it with a paused condition.
return nil
}
pausedCondExists := cond != nil && cond.Reason == deploymentutil.PausedDeployReason
needsUpdate := false
if d.Spec.Paused && !pausedCondExists {
condition := deploymentutil.NewDeploymentCondition(apps.DeploymentProgressing, v1.ConditionUnknown, deploymentutil.PausedDeployReason, "Deployment is paused")
deploymentutil.SetDeploymentCondition(&d.Status, *condition)
needsUpdate = true
} else if !d.Spec.Paused && pausedCondExists {
condition := deploymentutil.NewDeploymentCondition(apps.DeploymentProgressing, v1.ConditionUnknown, deploymentutil.ResumedDeployReason, "Deployment is resumed")
deploymentutil.SetDeploymentCondition(&d.Status, *condition)
needsUpdate = true
}
if !needsUpdate {
return nil
}
var err error
d, err = dc.client.AppsV1().Deployments(d.Namespace).UpdateStatus(d)
return err
}
// getAllReplicaSetsAndSyncRevision returns all the replica sets for the provided deployment (new and all old), with new RS's and deployment's revision updated.
//
// rsList should come from getReplicaSetsForDeployment(d).
// podMap should come from getPodMapForDeployment(d, rsList).
//
// 1. Get all old RSes this deployment targets, and calculate the max revision number among them (maxOldV).
// 2. Get new RS this deployment targets (whose pod template matches deployment's), and update new RS's revision number to (maxOldV + 1),
// only if its revision number is smaller than (maxOldV + 1). If this step failed, we'll update it in the next deployment sync loop.
// 3. Copy new RS's revision number to deployment (update deployment's revision). If this step failed, we'll update it in the next deployment sync loop.
//
// Note that currently the deployment controller is using caches to avoid querying the server for reads.
// This may lead to stale reads of replica sets, thus incorrect deployment status.
func (dc *DeploymentController) getAllReplicaSetsAndSyncRevision(d *apps.Deployment, rsList []*apps.ReplicaSet, podMap map[types.UID]*v1.PodList, createIfNotExisted bool) (*apps.ReplicaSet, []*apps.ReplicaSet, error) {
_, allOldRSs := deploymentutil.FindOldReplicaSets(d, rsList)
// Get new replica set with the updated revision number
newRS, err := dc.getNewReplicaSet(d, rsList, allOldRSs, createIfNotExisted)
if err != nil {
return nil, nil, err
}
return newRS, allOldRSs, nil
}
// Returns a replica set that matches the intent of the given deployment. Returns nil if the new replica set doesn't exist yet.
// 1. Get existing new RS (the RS that the given deployment targets, whose pod template is the same as deployment's).
// 2. If there's existing new RS, update its revision number if it's smaller than (maxOldRevision + 1), where maxOldRevision is the max revision number among all old RSes.
// 3. If there's no existing new RS and createIfNotExisted is true, create one with appropriate revision number (maxOldRevision + 1) and replicas.
// Note that the pod-template-hash will be added to adopted RSes and pods.
func (dc *DeploymentController) getNewReplicaSet(d *apps.Deployment, rsList, oldRSs []*apps.ReplicaSet, createIfNotExisted bool) (*apps.ReplicaSet, error) {
existingNewRS := deploymentutil.FindNewReplicaSet(d, rsList)
// Calculate the max revision number among all old RSes
maxOldRevision := deploymentutil.MaxRevision(oldRSs)
// Calculate revision number for this new replica set
newRevision := strconv.FormatInt(maxOldRevision+1, 10)
// Latest replica set exists. We need to sync its annotations (includes copying all but
// annotationsToSkip from the parent deployment, and update revision, desiredReplicas,
// and maxReplicas) and also update the revision annotation in the deployment with the
// latest revision.
if existingNewRS != nil {
rsCopy := existingNewRS.DeepCopy()
// Set existing new replica set's annotation
annotationsUpdated := deploymentutil.SetNewReplicaSetAnnotations(d, rsCopy, newRevision, true)
minReadySecondsNeedsUpdate := rsCopy.Spec.MinReadySeconds != d.Spec.MinReadySeconds
if annotationsUpdated || minReadySecondsNeedsUpdate {
rsCopy.Spec.MinReadySeconds = d.Spec.MinReadySeconds
return dc.client.AppsV1().ReplicaSets(rsCopy.ObjectMeta.Namespace).Update(rsCopy)
}
// Should use the revision in existingNewRS's annotation, since it set by before
needsUpdate := deploymentutil.SetDeploymentRevision(d, rsCopy.Annotations[deploymentutil.RevisionAnnotation])
// If no other Progressing condition has been recorded and we need to estimate the progress
// of this deployment then it is likely that old users started caring about progress. In that
// case we need to take into account the first time we noticed their new replica set.
cond := deploymentutil.GetDeploymentCondition(d.Status, apps.DeploymentProgressing)
if d.Spec.ProgressDeadlineSeconds != nil && cond == nil {
msg := fmt.Sprintf("Found new replica set %q", rsCopy.Name)
condition := deploymentutil.NewDeploymentCondition(apps.DeploymentProgressing, v1.ConditionTrue, deploymentutil.FoundNewRSReason, msg)
deploymentutil.SetDeploymentCondition(&d.Status, *condition)
needsUpdate = true
}
if needsUpdate {
var err error
if d, err = dc.client.AppsV1().Deployments(d.Namespace).UpdateStatus(d); err != nil {
return nil, err
}
}
return rsCopy, nil
}
if !createIfNotExisted {
return nil, nil
}
// new ReplicaSet does not exist, create one.
newRSTemplate := *d.Spec.Template.DeepCopy()
podTemplateSpecHash := fmt.Sprintf("%d", controller.ComputeHash(&newRSTemplate, d.Status.CollisionCount))
newRSTemplate.Labels = labelsutil.CloneAndAddLabel(d.Spec.Template.Labels, apps.DefaultDeploymentUniqueLabelKey, podTemplateSpecHash)
// Add podTemplateHash label to selector.
newRSSelector := labelsutil.CloneSelectorAndAddLabel(d.Spec.Selector, apps.DefaultDeploymentUniqueLabelKey, podTemplateSpecHash)
// Create new ReplicaSet
newRS := apps.ReplicaSet{
ObjectMeta: metav1.ObjectMeta{
// Make the name deterministic, to ensure idempotence
Name: d.Name + "-" + rand.SafeEncodeString(podTemplateSpecHash),
Namespace: d.Namespace,
OwnerReferences: []metav1.OwnerReference{*metav1.NewControllerRef(d, controllerKind)},
Labels: newRSTemplate.Labels,
},
Spec: apps.ReplicaSetSpec{
Replicas: new(int32),
MinReadySeconds: d.Spec.MinReadySeconds,
Selector: newRSSelector,
Template: newRSTemplate,
},
}
allRSs := append(oldRSs, &newRS)
newReplicasCount, err := deploymentutil.NewRSNewReplicas(d, allRSs, &newRS)
if err != nil {
return nil, err
}
*(newRS.Spec.Replicas) = newReplicasCount
// Set new replica set's annotation
deploymentutil.SetNewReplicaSetAnnotations(d, &newRS, newRevision, false)
// Create the new ReplicaSet. If it already exists, then we need to check for possible
// hash collisions. If there is any other error, we need to report it in the status of
// the Deployment.
alreadyExists := false
createdRS, err := dc.client.AppsV1().ReplicaSets(d.Namespace).Create(&newRS)
switch {
// We may end up hitting this due to a slow cache or a fast resync of the Deployment.
case errors.IsAlreadyExists(err):
alreadyExists = true
// Fetch a copy of the ReplicaSet.
rs, rsErr := dc.rsLister.ReplicaSets(newRS.Namespace).Get(newRS.Name)
if rsErr != nil {
return nil, rsErr
}
// If the Deployment owns the ReplicaSet and the ReplicaSet's PodTemplateSpec is semantically
// deep equal to the PodTemplateSpec of the Deployment, it's the Deployment's new ReplicaSet.
// Otherwise, this is a hash collision and we need to increment the collisionCount field in
// the status of the Deployment and requeue to try the creation in the next sync.
controllerRef := metav1.GetControllerOf(rs)
if controllerRef != nil && controllerRef.UID == d.UID && deploymentutil.EqualIgnoreHash(&d.Spec.Template, &rs.Spec.Template) {
createdRS = rs
err = nil
break
}
// Matching ReplicaSet is not equal - increment the collisionCount in the DeploymentStatus
// and requeue the Deployment.
if d.Status.CollisionCount == nil {
d.Status.CollisionCount = new(int32)
}
preCollisionCount := *d.Status.CollisionCount
*d.Status.CollisionCount++
// Update the collisionCount for the Deployment and let it requeue by returning the original
// error.
_, dErr := dc.client.AppsV1().Deployments(d.Namespace).UpdateStatus(d)
if dErr == nil {
glog.V(2).Infof("Found a hash collision for deployment %q - bumping collisionCount (%d->%d) to resolve it", d.Name, preCollisionCount, *d.Status.CollisionCount)
}
return nil, err
case err != nil:
msg := fmt.Sprintf("Failed to create new replica set %q: %v", newRS.Name, err)
if d.Spec.ProgressDeadlineSeconds != nil {
cond := deploymentutil.NewDeploymentCondition(apps.DeploymentProgressing, v1.ConditionFalse, deploymentutil.FailedRSCreateReason, msg)
deploymentutil.SetDeploymentCondition(&d.Status, *cond)
// We don't really care about this error at this point, since we have a bigger issue to report.
// TODO: Identify which errors are permanent and switch DeploymentIsFailed to take into account
// these reasons as well. Related issue: https://github.com/kubernetes/kubernetes/issues/18568
_, _ = dc.client.AppsV1().Deployments(d.Namespace).UpdateStatus(d)
}
dc.eventRecorder.Eventf(d, v1.EventTypeWarning, deploymentutil.FailedRSCreateReason, msg)
return nil, err
}
if !alreadyExists && newReplicasCount > 0 {
dc.eventRecorder.Eventf(d, v1.EventTypeNormal, "ScalingReplicaSet", "Scaled up replica set %s to %d", createdRS.Name, newReplicasCount)
}
needsUpdate := deploymentutil.SetDeploymentRevision(d, newRevision)
if !alreadyExists && d.Spec.ProgressDeadlineSeconds != nil {
msg := fmt.Sprintf("Created new replica set %q", createdRS.Name)
condition := deploymentutil.NewDeploymentCondition(apps.DeploymentProgressing, v1.ConditionTrue, deploymentutil.NewReplicaSetReason, msg)
deploymentutil.SetDeploymentCondition(&d.Status, *condition)
needsUpdate = true
}
if needsUpdate {
_, err = dc.client.AppsV1().Deployments(d.Namespace).UpdateStatus(d)
}
return createdRS, err
}
// scale scales proportionally in order to mitigate risk. Otherwise, scaling up can increase the size
// of the new replica set and scaling down can decrease the sizes of the old ones, both of which would
// have the effect of hastening the rollout progress, which could produce a higher proportion of unavailable
// replicas in the event of a problem with the rolled out template. Should run only on scaling events or
// when a deployment is paused and not during the normal rollout process.
func (dc *DeploymentController) scale(deployment *apps.Deployment, newRS *apps.ReplicaSet, oldRSs []*apps.ReplicaSet) error {
// If there is only one active replica set then we should scale that up to the full count of the
// deployment. If there is no active replica set, then we should scale up the newest replica set.
if activeOrLatest := deploymentutil.FindActiveOrLatest(newRS, oldRSs); activeOrLatest != nil {
if *(activeOrLatest.Spec.Replicas) == *(deployment.Spec.Replicas) {
return nil
}
_, _, err := dc.scaleReplicaSetAndRecordEvent(activeOrLatest, *(deployment.Spec.Replicas), deployment)
return err
}
// If the new replica set is saturated, old replica sets should be fully scaled down.
// This case handles replica set adoption during a saturated new replica set.
if deploymentutil.IsSaturated(deployment, newRS) {
for _, old := range controller.FilterActiveReplicaSets(oldRSs) {
if _, _, err := dc.scaleReplicaSetAndRecordEvent(old, 0, deployment); err != nil {
return err
}
}
return nil
}
// There are old replica sets with pods and the new replica set is not saturated.
// We need to proportionally scale all replica sets (new and old) in case of a
// rolling deployment.
if deploymentutil.IsRollingUpdate(deployment) {
allRSs := controller.FilterActiveReplicaSets(append(oldRSs, newRS))
allRSsReplicas := deploymentutil.GetReplicaCountForReplicaSets(allRSs)
allowedSize := int32(0)
if *(deployment.Spec.Replicas) > 0 {
allowedSize = *(deployment.Spec.Replicas) + deploymentutil.MaxSurge(*deployment)
}
// Number of additional replicas that can be either added or removed from the total
// replicas count. These replicas should be distributed proportionally to the active
// replica sets.
deploymentReplicasToAdd := allowedSize - allRSsReplicas
// The additional replicas should be distributed proportionally amongst the active
// replica sets from the larger to the smaller in size replica set. Scaling direction
// drives what happens in case we are trying to scale replica sets of the same size.
// In such a case when scaling up, we should scale up newer replica sets first, and
// when scaling down, we should scale down older replica sets first.
var scalingOperation string
switch {
case deploymentReplicasToAdd > 0:
sort.Sort(controller.ReplicaSetsBySizeNewer(allRSs))
scalingOperation = "up"
case deploymentReplicasToAdd < 0:
sort.Sort(controller.ReplicaSetsBySizeOlder(allRSs))
scalingOperation = "down"
}
// Iterate over all active replica sets and estimate proportions for each of them.
// The absolute value of deploymentReplicasAdded should never exceed the absolute
// value of deploymentReplicasToAdd.
deploymentReplicasAdded := int32(0)
nameToSize := make(map[string]int32)
for i := range allRSs {
rs := allRSs[i]
// Estimate proportions if we have replicas to add, otherwise simply populate
// nameToSize with the current sizes for each replica set.
if deploymentReplicasToAdd != 0 {
proportion := deploymentutil.GetProportion(rs, *deployment, deploymentReplicasToAdd, deploymentReplicasAdded)
nameToSize[rs.Name] = *(rs.Spec.Replicas) + proportion
deploymentReplicasAdded += proportion
} else {
nameToSize[rs.Name] = *(rs.Spec.Replicas)
}
}
// Update all replica sets
for i := range allRSs {
rs := allRSs[i]
// Add/remove any leftovers to the largest replica set.
if i == 0 && deploymentReplicasToAdd != 0 {
leftover := deploymentReplicasToAdd - deploymentReplicasAdded
nameToSize[rs.Name] = nameToSize[rs.Name] + leftover
if nameToSize[rs.Name] < 0 {
nameToSize[rs.Name] = 0
}
}
// TODO: Use transactions when we have them.
if _, _, err := dc.scaleReplicaSet(rs, nameToSize[rs.Name], deployment, scalingOperation); err != nil {
// Return as soon as we fail, the deployment is requeued
return err
}
}
}
return nil
}
func (dc *DeploymentController) scaleReplicaSetAndRecordEvent(rs *apps.ReplicaSet, newScale int32, deployment *apps.Deployment) (bool, *apps.ReplicaSet, error) {
// No need to scale
if *(rs.Spec.Replicas) == newScale {
return false, rs, nil
}
var scalingOperation string
if *(rs.Spec.Replicas) < newScale {
scalingOperation = "up"
} else {
scalingOperation = "down"
}
scaled, newRS, err := dc.scaleReplicaSet(rs, newScale, deployment, scalingOperation)
return scaled, newRS, err
}
func (dc *DeploymentController) scaleReplicaSet(rs *apps.ReplicaSet, newScale int32, deployment *apps.Deployment, scalingOperation string) (bool, *apps.ReplicaSet, error) {
sizeNeedsUpdate := *(rs.Spec.Replicas) != newScale
annotationsNeedUpdate := deploymentutil.ReplicasAnnotationsNeedUpdate(rs, *(deployment.Spec.Replicas), *(deployment.Spec.Replicas)+deploymentutil.MaxSurge(*deployment))
scaled := false
var err error
if sizeNeedsUpdate || annotationsNeedUpdate {
rsCopy := rs.DeepCopy()
*(rsCopy.Spec.Replicas) = newScale
deploymentutil.SetReplicasAnnotations(rsCopy, *(deployment.Spec.Replicas), *(deployment.Spec.Replicas)+deploymentutil.MaxSurge(*deployment))
rs, err = dc.client.AppsV1().ReplicaSets(rsCopy.Namespace).Update(rsCopy)
if err == nil && sizeNeedsUpdate {
scaled = true
dc.eventRecorder.Eventf(deployment, v1.EventTypeNormal, "ScalingReplicaSet", "Scaled %s replica set %s to %d", scalingOperation, rs.Name, newScale)
}
}
return scaled, rs, err
}
// cleanupDeployment is responsible for cleaning up a deployment ie. retains all but the latest N old replica sets
// where N=d.Spec.RevisionHistoryLimit. Old replica sets are older versions of the podtemplate of a deployment kept
// around by default 1) for historical reasons and 2) for the ability to rollback a deployment.
func (dc *DeploymentController) cleanupDeployment(oldRSs []*apps.ReplicaSet, deployment *apps.Deployment) error {
if deployment.Spec.RevisionHistoryLimit == nil {
return nil
}
// Avoid deleting replica set with deletion timestamp set
aliveFilter := func(rs *apps.ReplicaSet) bool {
return rs != nil && rs.ObjectMeta.DeletionTimestamp == nil
}
cleanableRSes := controller.FilterReplicaSets(oldRSs, aliveFilter)
diff := int32(len(cleanableRSes)) - *deployment.Spec.RevisionHistoryLimit
if diff <= 0 {
return nil
}
sort.Sort(controller.ReplicaSetsByCreationTimestamp(cleanableRSes))
glog.V(4).Infof("Looking to cleanup old replica sets for deployment %q", deployment.Name)
for i := int32(0); i < diff; i++ {
rs := cleanableRSes[i]
// Avoid delete replica set with non-zero replica counts
if rs.Status.Replicas != 0 || *(rs.Spec.Replicas) != 0 || rs.Generation > rs.Status.ObservedGeneration || rs.DeletionTimestamp != nil {
continue
}
glog.V(4).Infof("Trying to cleanup replica set %q for deployment %q", rs.Name, deployment.Name)
if err := dc.client.AppsV1().ReplicaSets(rs.Namespace).Delete(rs.Name, nil); err != nil && !errors.IsNotFound(err) {
// Return error instead of aggregating and continuing DELETEs on the theory
// that we may be overloading the api server.
return err
}
}
return nil
}
// syncDeploymentStatus checks if the status is up-to-date and sync it if necessary
func (dc *DeploymentController) syncDeploymentStatus(allRSs []*apps.ReplicaSet, newRS *apps.ReplicaSet, d *apps.Deployment) error {
newStatus := calculateStatus(allRSs, newRS, d)
if reflect.DeepEqual(d.Status, newStatus) {
return nil
}
newDeployment := d
newDeployment.Status = newStatus
_, err := dc.client.AppsV1().Deployments(newDeployment.Namespace).UpdateStatus(newDeployment)
return err
}
// calculateStatus calculates the latest status for the provided deployment by looking into the provided replica sets.
func calculateStatus(allRSs []*apps.ReplicaSet, newRS *apps.ReplicaSet, deployment *apps.Deployment) apps.DeploymentStatus {
availableReplicas := deploymentutil.GetAvailableReplicaCountForReplicaSets(allRSs)
totalReplicas := deploymentutil.GetReplicaCountForReplicaSets(allRSs)
unavailableReplicas := totalReplicas - availableReplicas
// If unavailableReplicas is negative, then that means the Deployment has more available replicas running than
// desired, e.g. whenever it scales down. In such a case we should simply default unavailableReplicas to zero.
if unavailableReplicas < 0 {
unavailableReplicas = 0
}
status := apps.DeploymentStatus{
// TODO: Ensure that if we start retrying status updates, we won't pick up a new Generation value.
ObservedGeneration: deployment.Generation,
Replicas: deploymentutil.GetActualReplicaCountForReplicaSets(allRSs),
UpdatedReplicas: deploymentutil.GetActualReplicaCountForReplicaSets([]*apps.ReplicaSet{newRS}),
ReadyReplicas: deploymentutil.GetReadyReplicaCountForReplicaSets(allRSs),
AvailableReplicas: availableReplicas,
UnavailableReplicas: unavailableReplicas,
CollisionCount: deployment.Status.CollisionCount,
}
// Copy conditions one by one so we won't mutate the original object.
conditions := deployment.Status.Conditions
for i := range conditions {
status.Conditions = append(status.Conditions, conditions[i])
}
if availableReplicas >= *(deployment.Spec.Replicas)-deploymentutil.MaxUnavailable(*deployment) {
minAvailability := deploymentutil.NewDeploymentCondition(apps.DeploymentAvailable, v1.ConditionTrue, deploymentutil.MinimumReplicasAvailable, "Deployment has minimum availability.")
deploymentutil.SetDeploymentCondition(&status, *minAvailability)
} else {
noMinAvailability := deploymentutil.NewDeploymentCondition(apps.DeploymentAvailable, v1.ConditionFalse, deploymentutil.MinimumReplicasUnavailable, "Deployment does not have minimum availability.")
deploymentutil.SetDeploymentCondition(&status, *noMinAvailability)
}
return status
}
// isScalingEvent checks whether the provided deployment has been updated with a scaling event
// by looking at the desired-replicas annotation in the active replica sets of the deployment.
//
// rsList should come from getReplicaSetsForDeployment(d).
// podMap should come from getPodMapForDeployment(d, rsList).
func (dc *DeploymentController) isScalingEvent(d *apps.Deployment, rsList []*apps.ReplicaSet, podMap map[types.UID]*v1.PodList) (bool, error) {
newRS, oldRSs, err := dc.getAllReplicaSetsAndSyncRevision(d, rsList, podMap, false)
if err != nil {
return false, err
}
allRSs := append(oldRSs, newRS)
for _, rs := range controller.FilterActiveReplicaSets(allRSs) {
desired, ok := deploymentutil.GetDesiredReplicasAnnotation(rs)
if !ok {
continue
}
if desired != *(d.Spec.Replicas) {
return true, nil
}
}
return false, nil
}

435
vendor/k8s.io/kubernetes/pkg/controller/deployment/sync_test.go generated vendored
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@ -1,435 +0,0 @@
/*
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 deployment
import (
"testing"
"time"
apps "k8s.io/api/apps/v1"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/util/intstr"
"k8s.io/client-go/informers"
"k8s.io/client-go/kubernetes/fake"
testclient "k8s.io/client-go/testing"
"k8s.io/client-go/tools/record"
"k8s.io/kubernetes/pkg/controller"
deploymentutil "k8s.io/kubernetes/pkg/controller/deployment/util"
)
func intOrStrP(val int) *intstr.IntOrString {
intOrStr := intstr.FromInt(val)
return &intOrStr
}
func TestScale(t *testing.T) {
newTimestamp := metav1.Date(2016, 5, 20, 2, 0, 0, 0, time.UTC)
oldTimestamp := metav1.Date(2016, 5, 20, 1, 0, 0, 0, time.UTC)
olderTimestamp := metav1.Date(2016, 5, 20, 0, 0, 0, 0, time.UTC)
var updatedTemplate = func(replicas int) *apps.Deployment {
d := newDeployment("foo", replicas, nil, nil, nil, map[string]string{"foo": "bar"})
d.Spec.Template.Labels["another"] = "label"
return d
}
tests := []struct {
name string
deployment *apps.Deployment
oldDeployment *apps.Deployment
newRS *apps.ReplicaSet
oldRSs []*apps.ReplicaSet
expectedNew *apps.ReplicaSet
expectedOld []*apps.ReplicaSet
wasntUpdated map[string]bool
desiredReplicasAnnotations map[string]int32
}{
{
name: "normal scaling event: 10 -> 12",
deployment: newDeployment("foo", 12, nil, nil, nil, nil),
oldDeployment: newDeployment("foo", 10, nil, nil, nil, nil),
newRS: rs("foo-v1", 10, nil, newTimestamp),
oldRSs: []*apps.ReplicaSet{},
expectedNew: rs("foo-v1", 12, nil, newTimestamp),
expectedOld: []*apps.ReplicaSet{},
},
{
name: "normal scaling event: 10 -> 5",
deployment: newDeployment("foo", 5, nil, nil, nil, nil),
oldDeployment: newDeployment("foo", 10, nil, nil, nil, nil),
newRS: rs("foo-v1", 10, nil, newTimestamp),
oldRSs: []*apps.ReplicaSet{},
expectedNew: rs("foo-v1", 5, nil, newTimestamp),
expectedOld: []*apps.ReplicaSet{},
},
{
name: "proportional scaling: 5 -> 10",
deployment: newDeployment("foo", 10, nil, nil, nil, nil),
oldDeployment: newDeployment("foo", 5, nil, nil, nil, nil),
newRS: rs("foo-v2", 2, nil, newTimestamp),
oldRSs: []*apps.ReplicaSet{rs("foo-v1", 3, nil, oldTimestamp)},
expectedNew: rs("foo-v2", 4, nil, newTimestamp),
expectedOld: []*apps.ReplicaSet{rs("foo-v1", 6, nil, oldTimestamp)},
},
{
name: "proportional scaling: 5 -> 3",
deployment: newDeployment("foo", 3, nil, nil, nil, nil),
oldDeployment: newDeployment("foo", 5, nil, nil, nil, nil),
newRS: rs("foo-v2", 2, nil, newTimestamp),
oldRSs: []*apps.ReplicaSet{rs("foo-v1", 3, nil, oldTimestamp)},
expectedNew: rs("foo-v2", 1, nil, newTimestamp),
expectedOld: []*apps.ReplicaSet{rs("foo-v1", 2, nil, oldTimestamp)},
},
{
name: "proportional scaling: 9 -> 4",
deployment: newDeployment("foo", 4, nil, nil, nil, nil),
oldDeployment: newDeployment("foo", 9, nil, nil, nil, nil),
newRS: rs("foo-v2", 8, nil, newTimestamp),
oldRSs: []*apps.ReplicaSet{rs("foo-v1", 1, nil, oldTimestamp)},
expectedNew: rs("foo-v2", 4, nil, newTimestamp),
expectedOld: []*apps.ReplicaSet{rs("foo-v1", 0, nil, oldTimestamp)},
},
{
name: "proportional scaling: 7 -> 10",
deployment: newDeployment("foo", 10, nil, nil, nil, nil),
oldDeployment: newDeployment("foo", 7, nil, nil, nil, nil),
newRS: rs("foo-v3", 2, nil, newTimestamp),
oldRSs: []*apps.ReplicaSet{rs("foo-v2", 3, nil, oldTimestamp), rs("foo-v1", 2, nil, olderTimestamp)},
expectedNew: rs("foo-v3", 3, nil, newTimestamp),
expectedOld: []*apps.ReplicaSet{rs("foo-v2", 4, nil, oldTimestamp), rs("foo-v1", 3, nil, olderTimestamp)},
},
{
name: "proportional scaling: 13 -> 8",
deployment: newDeployment("foo", 8, nil, nil, nil, nil),
oldDeployment: newDeployment("foo", 13, nil, nil, nil, nil),
newRS: rs("foo-v3", 2, nil, newTimestamp),
oldRSs: []*apps.ReplicaSet{rs("foo-v2", 8, nil, oldTimestamp), rs("foo-v1", 3, nil, olderTimestamp)},
expectedNew: rs("foo-v3", 1, nil, newTimestamp),
expectedOld: []*apps.ReplicaSet{rs("foo-v2", 5, nil, oldTimestamp), rs("foo-v1", 2, nil, olderTimestamp)},
},
// Scales up the new replica set.
{
name: "leftover distribution: 3 -> 4",
deployment: newDeployment("foo", 4, nil, nil, nil, nil),
oldDeployment: newDeployment("foo", 3, nil, nil, nil, nil),
newRS: rs("foo-v3", 1, nil, newTimestamp),
oldRSs: []*apps.ReplicaSet{rs("foo-v2", 1, nil, oldTimestamp), rs("foo-v1", 1, nil, olderTimestamp)},
expectedNew: rs("foo-v3", 2, nil, newTimestamp),
expectedOld: []*apps.ReplicaSet{rs("foo-v2", 1, nil, oldTimestamp), rs("foo-v1", 1, nil, olderTimestamp)},
},
// Scales down the older replica set.
{
name: "leftover distribution: 3 -> 2",
deployment: newDeployment("foo", 2, nil, nil, nil, nil),
oldDeployment: newDeployment("foo", 3, nil, nil, nil, nil),
newRS: rs("foo-v3", 1, nil, newTimestamp),
oldRSs: []*apps.ReplicaSet{rs("foo-v2", 1, nil, oldTimestamp), rs("foo-v1", 1, nil, olderTimestamp)},
expectedNew: rs("foo-v3", 1, nil, newTimestamp),
expectedOld: []*apps.ReplicaSet{rs("foo-v2", 1, nil, oldTimestamp), rs("foo-v1", 0, nil, olderTimestamp)},
},
// Scales up the latest replica set first.
{
name: "proportional scaling (no new rs): 4 -> 5",
deployment: newDeployment("foo", 5, nil, nil, nil, nil),
oldDeployment: newDeployment("foo", 4, nil, nil, nil, nil),
newRS: nil,
oldRSs: []*apps.ReplicaSet{rs("foo-v2", 2, nil, oldTimestamp), rs("foo-v1", 2, nil, olderTimestamp)},
expectedNew: nil,
expectedOld: []*apps.ReplicaSet{rs("foo-v2", 3, nil, oldTimestamp), rs("foo-v1", 2, nil, olderTimestamp)},
},
// Scales down to zero
{
name: "proportional scaling: 6 -> 0",
deployment: newDeployment("foo", 0, nil, nil, nil, nil),
oldDeployment: newDeployment("foo", 6, nil, nil, nil, nil),
newRS: rs("foo-v3", 3, nil, newTimestamp),
oldRSs: []*apps.ReplicaSet{rs("foo-v2", 2, nil, oldTimestamp), rs("foo-v1", 1, nil, olderTimestamp)},
expectedNew: rs("foo-v3", 0, nil, newTimestamp),
expectedOld: []*apps.ReplicaSet{rs("foo-v2", 0, nil, oldTimestamp), rs("foo-v1", 0, nil, olderTimestamp)},
},
// Scales up from zero
{
name: "proportional scaling: 0 -> 6",
deployment: newDeployment("foo", 6, nil, nil, nil, nil),
oldDeployment: newDeployment("foo", 6, nil, nil, nil, nil),
newRS: rs("foo-v3", 0, nil, newTimestamp),
oldRSs: []*apps.ReplicaSet{rs("foo-v2", 0, nil, oldTimestamp), rs("foo-v1", 0, nil, olderTimestamp)},
expectedNew: rs("foo-v3", 6, nil, newTimestamp),
expectedOld: []*apps.ReplicaSet{rs("foo-v2", 0, nil, oldTimestamp), rs("foo-v1", 0, nil, olderTimestamp)},
wasntUpdated: map[string]bool{"foo-v2": true, "foo-v1": true},
},
// Scenario: deployment.spec.replicas == 3 ( foo-v1.spec.replicas == foo-v2.spec.replicas == foo-v3.spec.replicas == 1 )
// Deployment is scaled to 5. foo-v3.spec.replicas and foo-v2.spec.replicas should increment by 1 but foo-v2 fails to
// update.
{
name: "failed rs update",
deployment: newDeployment("foo", 5, nil, nil, nil, nil),
oldDeployment: newDeployment("foo", 5, nil, nil, nil, nil),
newRS: rs("foo-v3", 2, nil, newTimestamp),
oldRSs: []*apps.ReplicaSet{rs("foo-v2", 1, nil, oldTimestamp), rs("foo-v1", 1, nil, olderTimestamp)},
expectedNew: rs("foo-v3", 2, nil, newTimestamp),
expectedOld: []*apps.ReplicaSet{rs("foo-v2", 2, nil, oldTimestamp), rs("foo-v1", 1, nil, olderTimestamp)},
wasntUpdated: map[string]bool{"foo-v3": true, "foo-v1": true},
desiredReplicasAnnotations: map[string]int32{"foo-v2": int32(3)},
},
{
name: "deployment with surge pods",
deployment: newDeployment("foo", 20, nil, intOrStrP(2), nil, nil),
oldDeployment: newDeployment("foo", 10, nil, intOrStrP(2), nil, nil),
newRS: rs("foo-v2", 6, nil, newTimestamp),
oldRSs: []*apps.ReplicaSet{rs("foo-v1", 6, nil, oldTimestamp)},
expectedNew: rs("foo-v2", 11, nil, newTimestamp),
expectedOld: []*apps.ReplicaSet{rs("foo-v1", 11, nil, oldTimestamp)},
},
{
name: "change both surge and size",
deployment: newDeployment("foo", 50, nil, intOrStrP(6), nil, nil),
oldDeployment: newDeployment("foo", 10, nil, intOrStrP(3), nil, nil),
newRS: rs("foo-v2", 5, nil, newTimestamp),
oldRSs: []*apps.ReplicaSet{rs("foo-v1", 8, nil, oldTimestamp)},
expectedNew: rs("foo-v2", 22, nil, newTimestamp),
expectedOld: []*apps.ReplicaSet{rs("foo-v1", 34, nil, oldTimestamp)},
},
{
name: "change both size and template",
deployment: updatedTemplate(14),
oldDeployment: newDeployment("foo", 10, nil, nil, nil, map[string]string{"foo": "bar"}),
newRS: nil,
oldRSs: []*apps.ReplicaSet{rs("foo-v2", 7, nil, newTimestamp), rs("foo-v1", 3, nil, oldTimestamp)},
expectedNew: nil,
expectedOld: []*apps.ReplicaSet{rs("foo-v2", 10, nil, newTimestamp), rs("foo-v1", 4, nil, oldTimestamp)},
},
{
name: "saturated but broken new replica set does not affect old pods",
deployment: newDeployment("foo", 2, nil, intOrStrP(1), intOrStrP(1), nil),
oldDeployment: newDeployment("foo", 2, nil, intOrStrP(1), intOrStrP(1), nil),
newRS: func() *apps.ReplicaSet {
rs := rs("foo-v2", 2, nil, newTimestamp)
rs.Status.AvailableReplicas = 0
return rs
}(),
oldRSs: []*apps.ReplicaSet{rs("foo-v1", 1, nil, oldTimestamp)},
expectedNew: rs("foo-v2", 2, nil, newTimestamp),
expectedOld: []*apps.ReplicaSet{rs("foo-v1", 1, nil, oldTimestamp)},
},
}
for _, test := range tests {
t.Run(test.name, func(t *testing.T) {
_ = olderTimestamp
t.Log(test.name)
fake := fake.Clientset{}
dc := &DeploymentController{
client: &fake,
eventRecorder: &record.FakeRecorder{},
}
if test.newRS != nil {
desiredReplicas := *(test.oldDeployment.Spec.Replicas)
if desired, ok := test.desiredReplicasAnnotations[test.newRS.Name]; ok {
desiredReplicas = desired
}
deploymentutil.SetReplicasAnnotations(test.newRS, desiredReplicas, desiredReplicas+deploymentutil.MaxSurge(*test.oldDeployment))
}
for i := range test.oldRSs {
rs := test.oldRSs[i]
if rs == nil {
continue
}
desiredReplicas := *(test.oldDeployment.Spec.Replicas)
if desired, ok := test.desiredReplicasAnnotations[rs.Name]; ok {
desiredReplicas = desired
}
deploymentutil.SetReplicasAnnotations(rs, desiredReplicas, desiredReplicas+deploymentutil.MaxSurge(*test.oldDeployment))
}
if err := dc.scale(test.deployment, test.newRS, test.oldRSs); err != nil {
t.Errorf("%s: unexpected error: %v", test.name, err)
return
}
// Construct the nameToSize map that will hold all the sizes we got our of tests
// Skip updating the map if the replica set wasn't updated since there will be
// no update action for it.
nameToSize := make(map[string]int32)
if test.newRS != nil {
nameToSize[test.newRS.Name] = *(test.newRS.Spec.Replicas)
}
for i := range test.oldRSs {
rs := test.oldRSs[i]
nameToSize[rs.Name] = *(rs.Spec.Replicas)
}
// Get all the UPDATE actions and update nameToSize with all the updated sizes.
for _, action := range fake.Actions() {
rs := action.(testclient.UpdateAction).GetObject().(*apps.ReplicaSet)
if !test.wasntUpdated[rs.Name] {
nameToSize[rs.Name] = *(rs.Spec.Replicas)
}
}
if test.expectedNew != nil && test.newRS != nil && *(test.expectedNew.Spec.Replicas) != nameToSize[test.newRS.Name] {
t.Errorf("%s: expected new replicas: %d, got: %d", test.name, *(test.expectedNew.Spec.Replicas), nameToSize[test.newRS.Name])
return
}
if len(test.expectedOld) != len(test.oldRSs) {
t.Errorf("%s: expected %d old replica sets, got %d", test.name, len(test.expectedOld), len(test.oldRSs))
return
}
for n := range test.oldRSs {
rs := test.oldRSs[n]
expected := test.expectedOld[n]
if *(expected.Spec.Replicas) != nameToSize[rs.Name] {
t.Errorf("%s: expected old (%s) replicas: %d, got: %d", test.name, rs.Name, *(expected.Spec.Replicas), nameToSize[rs.Name])
}
}
})
}
}
func TestDeploymentController_cleanupDeployment(t *testing.T) {
selector := map[string]string{"foo": "bar"}
alreadyDeleted := newRSWithStatus("foo-1", 0, 0, selector)
now := metav1.Now()
alreadyDeleted.DeletionTimestamp = &now
tests := []struct {
oldRSs []*apps.ReplicaSet
revisionHistoryLimit int32
expectedDeletions int
}{
{
oldRSs: []*apps.ReplicaSet{
newRSWithStatus("foo-1", 0, 0, selector),
newRSWithStatus("foo-2", 0, 0, selector),
newRSWithStatus("foo-3", 0, 0, selector),
},
revisionHistoryLimit: 1,
expectedDeletions: 2,
},
{
// Only delete the replica set with Spec.Replicas = Status.Replicas = 0.
oldRSs: []*apps.ReplicaSet{
newRSWithStatus("foo-1", 0, 0, selector),
newRSWithStatus("foo-2", 0, 1, selector),
newRSWithStatus("foo-3", 1, 0, selector),
newRSWithStatus("foo-4", 1, 1, selector),
},
revisionHistoryLimit: 0,
expectedDeletions: 1,
},
{
oldRSs: []*apps.ReplicaSet{
newRSWithStatus("foo-1", 0, 0, selector),
newRSWithStatus("foo-2", 0, 0, selector),
},
revisionHistoryLimit: 0,
expectedDeletions: 2,
},
{
oldRSs: []*apps.ReplicaSet{
newRSWithStatus("foo-1", 1, 1, selector),
newRSWithStatus("foo-2", 1, 1, selector),
},
revisionHistoryLimit: 0,
expectedDeletions: 0,
},
{
oldRSs: []*apps.ReplicaSet{
alreadyDeleted,
},
revisionHistoryLimit: 0,
expectedDeletions: 0,
},
}
for i := range tests {
test := tests[i]
t.Logf("scenario %d", i)
fake := &fake.Clientset{}
informers := informers.NewSharedInformerFactory(fake, controller.NoResyncPeriodFunc())
controller, err := NewDeploymentController(informers.Apps().V1().Deployments(), informers.Apps().V1().ReplicaSets(), informers.Core().V1().Pods(), fake)
if err != nil {
t.Fatalf("error creating Deployment controller: %v", err)
}
controller.eventRecorder = &record.FakeRecorder{}
controller.dListerSynced = alwaysReady
controller.rsListerSynced = alwaysReady
controller.podListerSynced = alwaysReady
for _, rs := range test.oldRSs {
informers.Apps().V1().ReplicaSets().Informer().GetIndexer().Add(rs)
}
stopCh := make(chan struct{})
defer close(stopCh)
informers.Start(stopCh)
d := newDeployment("foo", 1, &test.revisionHistoryLimit, nil, nil, map[string]string{"foo": "bar"})
controller.cleanupDeployment(test.oldRSs, d)
gotDeletions := 0
for _, action := range fake.Actions() {
if "delete" == action.GetVerb() {
gotDeletions++
}
}
if gotDeletions != test.expectedDeletions {
t.Errorf("expect %v old replica sets been deleted, but got %v", test.expectedDeletions, gotDeletions)
continue
}
}
}

75
vendor/k8s.io/kubernetes/pkg/controller/deployment/util/BUILD generated vendored
View File

@ -1,75 +0,0 @@
package(default_visibility = ["//visibility:public"])
load(
"@io_bazel_rules_go//go:def.bzl",
"go_library",
"go_test",
)
go_library(
name = "go_default_library",
srcs = [
"deployment_util.go",
"pod_util.go",
"replicaset_util.go",
],
importpath = "k8s.io/kubernetes/pkg/controller/deployment/util",
deps = [
"//pkg/apis/extensions:go_default_library",
"//pkg/controller:go_default_library",
"//pkg/util/labels:go_default_library",
"//vendor/github.com/golang/glog:go_default_library",
"//vendor/k8s.io/api/apps/v1:go_default_library",
"//vendor/k8s.io/api/core/v1:go_default_library",
"//vendor/k8s.io/apimachinery/pkg/api/equality:go_default_library",
"//vendor/k8s.io/apimachinery/pkg/api/meta:go_default_library",
"//vendor/k8s.io/apimachinery/pkg/apis/meta/v1:go_default_library",
"//vendor/k8s.io/apimachinery/pkg/runtime:go_default_library",
"//vendor/k8s.io/apimachinery/pkg/types:go_default_library",
"//vendor/k8s.io/apimachinery/pkg/util/errors:go_default_library",
"//vendor/k8s.io/apimachinery/pkg/util/intstr:go_default_library",
"//vendor/k8s.io/apimachinery/pkg/util/wait:go_default_library",
"//vendor/k8s.io/client-go/kubernetes/typed/apps/v1:go_default_library",
"//vendor/k8s.io/client-go/kubernetes/typed/core/v1:go_default_library",
"//vendor/k8s.io/client-go/listers/apps/v1:go_default_library",
"//vendor/k8s.io/client-go/listers/core/v1:go_default_library",
"//vendor/k8s.io/client-go/util/integer:go_default_library",
"//vendor/k8s.io/client-go/util/retry:go_default_library",
],
)
go_test(
name = "go_default_test",
srcs = [
"deployment_util_test.go",
"hash_test.go",
],
embed = [":go_default_library"],
deps = [
"//pkg/controller:go_default_library",
"//pkg/util/hash:go_default_library",
"//vendor/k8s.io/api/apps/v1:go_default_library",
"//vendor/k8s.io/api/core/v1:go_default_library",
"//vendor/k8s.io/apimachinery/pkg/api/equality:go_default_library",
"//vendor/k8s.io/apimachinery/pkg/apis/meta/v1:go_default_library",
"//vendor/k8s.io/apimachinery/pkg/runtime:go_default_library",
"//vendor/k8s.io/apimachinery/pkg/types:go_default_library",
"//vendor/k8s.io/apimachinery/pkg/util/intstr:go_default_library",
"//vendor/k8s.io/apiserver/pkg/storage/names:go_default_library",
"//vendor/k8s.io/client-go/kubernetes/fake:go_default_library",
"//vendor/k8s.io/client-go/testing:go_default_library",
],
)
filegroup(
name = "package-srcs",
srcs = glob(["**"]),
tags = ["automanaged"],
visibility = ["//visibility:private"],
)
filegroup(
name = "all-srcs",
srcs = [":package-srcs"],
tags = ["automanaged"],
)

920
vendor/k8s.io/kubernetes/pkg/controller/deployment/util/deployment_util.go generated vendored
View File

@ -1,920 +0,0 @@
/*
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 util
import (
"fmt"
"sort"
"strconv"
"strings"
"time"
"github.com/golang/glog"
apps "k8s.io/api/apps/v1"
"k8s.io/api/core/v1"
apiequality "k8s.io/apimachinery/pkg/api/equality"
"k8s.io/apimachinery/pkg/api/meta"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/runtime"
"k8s.io/apimachinery/pkg/types"
intstrutil "k8s.io/apimachinery/pkg/util/intstr"
"k8s.io/apimachinery/pkg/util/wait"
appsclient "k8s.io/client-go/kubernetes/typed/apps/v1"
"k8s.io/client-go/util/integer"
internalextensions "k8s.io/kubernetes/pkg/apis/extensions"
"k8s.io/kubernetes/pkg/controller"
labelsutil "k8s.io/kubernetes/pkg/util/labels"
)
const (
// RevisionAnnotation is the revision annotation of a deployment's replica sets which records its rollout sequence
RevisionAnnotation = "deployment.kubernetes.io/revision"
// RevisionHistoryAnnotation maintains the history of all old revisions that a replica set has served for a deployment.
RevisionHistoryAnnotation = "deployment.kubernetes.io/revision-history"
// DesiredReplicasAnnotation is the desired replicas for a deployment recorded as an annotation
// in its replica sets. Helps in separating scaling events from the rollout process and for
// determining if the new replica set for a deployment is really saturated.
DesiredReplicasAnnotation = "deployment.kubernetes.io/desired-replicas"
// MaxReplicasAnnotation is the maximum replicas a deployment can have at a given point, which
// is deployment.spec.replicas + maxSurge. Used by the underlying replica sets to estimate their
// proportions in case the deployment has surge replicas.
MaxReplicasAnnotation = "deployment.kubernetes.io/max-replicas"
// RollbackRevisionNotFound is not found rollback event reason
RollbackRevisionNotFound = "DeploymentRollbackRevisionNotFound"
// RollbackTemplateUnchanged is the template unchanged rollback event reason
RollbackTemplateUnchanged = "DeploymentRollbackTemplateUnchanged"
// RollbackDone is the done rollback event reason
RollbackDone = "DeploymentRollback"
// Reasons for deployment conditions
//
// Progressing:
//
// ReplicaSetUpdatedReason is added in a deployment when one of its replica sets is updated as part
// of the rollout process.
ReplicaSetUpdatedReason = "ReplicaSetUpdated"
// FailedRSCreateReason is added in a deployment when it cannot create a new replica set.
FailedRSCreateReason = "ReplicaSetCreateError"
// NewReplicaSetReason is added in a deployment when it creates a new replica set.
NewReplicaSetReason = "NewReplicaSetCreated"
// FoundNewRSReason is added in a deployment when it adopts an existing replica set.
FoundNewRSReason = "FoundNewReplicaSet"
// NewRSAvailableReason is added in a deployment when its newest replica set is made available
// ie. the number of new pods that have passed readiness checks and run for at least minReadySeconds
// is at least the minimum available pods that need to run for the deployment.
NewRSAvailableReason = "NewReplicaSetAvailable"
// TimedOutReason is added in a deployment when its newest replica set fails to show any progress
// within the given deadline (progressDeadlineSeconds).
TimedOutReason = "ProgressDeadlineExceeded"
// PausedDeployReason is added in a deployment when it is paused. Lack of progress shouldn't be
// estimated once a deployment is paused.
PausedDeployReason = "DeploymentPaused"
// ResumedDeployReason is added in a deployment when it is resumed. Useful for not failing accidentally
// deployments that paused amidst a rollout and are bounded by a deadline.
ResumedDeployReason = "DeploymentResumed"
//
// Available:
//
// MinimumReplicasAvailable is added in a deployment when it has its minimum replicas required available.
MinimumReplicasAvailable = "MinimumReplicasAvailable"
// MinimumReplicasUnavailable is added in a deployment when it doesn't have the minimum required replicas
// available.
MinimumReplicasUnavailable = "MinimumReplicasUnavailable"
)
// NewDeploymentCondition creates a new deployment condition.
func NewDeploymentCondition(condType apps.DeploymentConditionType, status v1.ConditionStatus, reason, message string) *apps.DeploymentCondition {
return &apps.DeploymentCondition{
Type: condType,
Status: status,
LastUpdateTime: metav1.Now(),
LastTransitionTime: metav1.Now(),
Reason: reason,
Message: message,
}
}
// GetDeploymentCondition returns the condition with the provided type.
func GetDeploymentCondition(status apps.DeploymentStatus, condType apps.DeploymentConditionType) *apps.DeploymentCondition {
for i := range status.Conditions {
c := status.Conditions[i]
if c.Type == condType {
return &c
}
}
return nil
}
// SetDeploymentCondition updates the deployment to include the provided condition. If the condition that
// we are about to add already exists and has the same status and reason then we are not going to update.
func SetDeploymentCondition(status *apps.DeploymentStatus, condition apps.DeploymentCondition) {
currentCond := GetDeploymentCondition(*status, condition.Type)
if currentCond != nil && currentCond.Status == condition.Status && currentCond.Reason == condition.Reason {
return
}
// Do not update lastTransitionTime if the status of the condition doesn't change.
if currentCond != nil && currentCond.Status == condition.Status {
condition.LastTransitionTime = currentCond.LastTransitionTime
}
newConditions := filterOutCondition(status.Conditions, condition.Type)
status.Conditions = append(newConditions, condition)
}
// RemoveDeploymentCondition removes the deployment condition with the provided type.
func RemoveDeploymentCondition(status *apps.DeploymentStatus, condType apps.DeploymentConditionType) {
status.Conditions = filterOutCondition(status.Conditions, condType)
}
// filterOutCondition returns a new slice of deployment conditions without conditions with the provided type.
func filterOutCondition(conditions []apps.DeploymentCondition, condType apps.DeploymentConditionType) []apps.DeploymentCondition {
var newConditions []apps.DeploymentCondition
for _, c := range conditions {
if c.Type == condType {
continue
}
newConditions = append(newConditions, c)
}
return newConditions
}
// ReplicaSetToDeploymentCondition converts a replica set condition into a deployment condition.
// Useful for promoting replica set failure conditions into deployments.
func ReplicaSetToDeploymentCondition(cond apps.ReplicaSetCondition) apps.DeploymentCondition {
return apps.DeploymentCondition{
Type: apps.DeploymentConditionType(cond.Type),
Status: cond.Status,
LastTransitionTime: cond.LastTransitionTime,
LastUpdateTime: cond.LastTransitionTime,
Reason: cond.Reason,
Message: cond.Message,
}
}
// SetDeploymentRevision updates the revision for a deployment.
func SetDeploymentRevision(deployment *apps.Deployment, revision string) bool {
updated := false
if deployment.Annotations == nil {
deployment.Annotations = make(map[string]string)
}
if deployment.Annotations[RevisionAnnotation] != revision {
deployment.Annotations[RevisionAnnotation] = revision
updated = true
}
return updated
}
// MaxRevision finds the highest revision in the replica sets
func MaxRevision(allRSs []*apps.ReplicaSet) int64 {
max := int64(0)
for _, rs := range allRSs {
if v, err := Revision(rs); err != nil {
// Skip the replica sets when it failed to parse their revision information
glog.V(4).Infof("Error: %v. Couldn't parse revision for replica set %#v, deployment controller will skip it when reconciling revisions.", err, rs)
} else if v > max {
max = v
}
}
return max
}
// LastRevision finds the second max revision number in all replica sets (the last revision)
func LastRevision(allRSs []*apps.ReplicaSet) int64 {
max, secMax := int64(0), int64(0)
for _, rs := range allRSs {
if v, err := Revision(rs); err != nil {
// Skip the replica sets when it failed to parse their revision information
glog.V(4).Infof("Error: %v. Couldn't parse revision for replica set %#v, deployment controller will skip it when reconciling revisions.", err, rs)
} else if v >= max {
secMax = max
max = v
} else if v > secMax {
secMax = v
}
}
return secMax
}
// Revision returns the revision number of the input object.
func Revision(obj runtime.Object) (int64, error) {
acc, err := meta.Accessor(obj)
if err != nil {
return 0, err
}
v, ok := acc.GetAnnotations()[RevisionAnnotation]
if !ok {
return 0, nil
}
return strconv.ParseInt(v, 10, 64)
}
// SetNewReplicaSetAnnotations sets new replica set's annotations appropriately by updating its revision and
// copying required deployment annotations to it; it returns true if replica set's annotation is changed.
func SetNewReplicaSetAnnotations(deployment *apps.Deployment, newRS *apps.ReplicaSet, newRevision string, exists bool) bool {
// First, copy deployment's annotations (except for apply and revision annotations)
annotationChanged := copyDeploymentAnnotationsToReplicaSet(deployment, newRS)
// Then, update replica set's revision annotation
if newRS.Annotations == nil {
newRS.Annotations = make(map[string]string)
}
oldRevision, ok := newRS.Annotations[RevisionAnnotation]
// The newRS's revision should be the greatest among all RSes. Usually, its revision number is newRevision (the max revision number
// of all old RSes + 1). However, it's possible that some of the old RSes are deleted after the newRS revision being updated, and
// newRevision becomes smaller than newRS's revision. We should only update newRS revision when it's smaller than newRevision.
oldRevisionInt, err := strconv.ParseInt(oldRevision, 10, 64)
if err != nil {
if oldRevision != "" {
glog.Warningf("Updating replica set revision OldRevision not int %s", err)
return false
}
//If the RS annotation is empty then initialise it to 0
oldRevisionInt = 0
}
newRevisionInt, err := strconv.ParseInt(newRevision, 10, 64)
if err != nil {
glog.Warningf("Updating replica set revision NewRevision not int %s", err)
return false
}
if oldRevisionInt < newRevisionInt {
newRS.Annotations[RevisionAnnotation] = newRevision
annotationChanged = true
glog.V(4).Infof("Updating replica set %q revision to %s", newRS.Name, newRevision)
}
// If a revision annotation already existed and this replica set was updated with a new revision
// then that means we are rolling back to this replica set. We need to preserve the old revisions
// for historical information.
if ok && annotationChanged {
revisionHistoryAnnotation := newRS.Annotations[RevisionHistoryAnnotation]
oldRevisions := strings.Split(revisionHistoryAnnotation, ",")
if len(oldRevisions[0]) == 0 {
newRS.Annotations[RevisionHistoryAnnotation] = oldRevision
} else {
oldRevisions = append(oldRevisions, oldRevision)
newRS.Annotations[RevisionHistoryAnnotation] = strings.Join(oldRevisions, ",")
}
}
// If the new replica set is about to be created, we need to add replica annotations to it.
if !exists && SetReplicasAnnotations(newRS, *(deployment.Spec.Replicas), *(deployment.Spec.Replicas)+MaxSurge(*deployment)) {
annotationChanged = true
}
return annotationChanged
}
var annotationsToSkip = map[string]bool{
v1.LastAppliedConfigAnnotation: true,
RevisionAnnotation: true,
RevisionHistoryAnnotation: true,
DesiredReplicasAnnotation: true,
MaxReplicasAnnotation: true,
apps.DeprecatedRollbackTo: true,
}
// skipCopyAnnotation returns true if we should skip copying the annotation with the given annotation key
// TODO: How to decide which annotations should / should not be copied?
// See https://github.com/kubernetes/kubernetes/pull/20035#issuecomment-179558615
func skipCopyAnnotation(key string) bool {
return annotationsToSkip[key]
}
// copyDeploymentAnnotationsToReplicaSet copies deployment's annotations to replica set's annotations,
// and returns true if replica set's annotation is changed.
// Note that apply and revision annotations are not copied.
func copyDeploymentAnnotationsToReplicaSet(deployment *apps.Deployment, rs *apps.ReplicaSet) bool {
rsAnnotationsChanged := false
if rs.Annotations == nil {
rs.Annotations = make(map[string]string)
}
for k, v := range deployment.Annotations {
// newRS revision is updated automatically in getNewReplicaSet, and the deployment's revision number is then updated
// by copying its newRS revision number. We should not copy deployment's revision to its newRS, since the update of
// deployment revision number may fail (revision becomes stale) and the revision number in newRS is more reliable.
if skipCopyAnnotation(k) || rs.Annotations[k] == v {
continue
}
rs.Annotations[k] = v
rsAnnotationsChanged = true
}
return rsAnnotationsChanged
}
// SetDeploymentAnnotationsTo sets deployment's annotations as given RS's annotations.
// This action should be done if and only if the deployment is rolling back to this rs.
// Note that apply and revision annotations are not changed.
func SetDeploymentAnnotationsTo(deployment *apps.Deployment, rollbackToRS *apps.ReplicaSet) {
deployment.Annotations = getSkippedAnnotations(deployment.Annotations)
for k, v := range rollbackToRS.Annotations {
if !skipCopyAnnotation(k) {
deployment.Annotations[k] = v
}
}
}
func getSkippedAnnotations(annotations map[string]string) map[string]string {
skippedAnnotations := make(map[string]string)
for k, v := range annotations {
if skipCopyAnnotation(k) {
skippedAnnotations[k] = v
}
}
return skippedAnnotations
}
// FindActiveOrLatest returns the only active or the latest replica set in case there is at most one active
// replica set. If there are more active replica sets, then we should proportionally scale them.
func FindActiveOrLatest(newRS *apps.ReplicaSet, oldRSs []*apps.ReplicaSet) *apps.ReplicaSet {
if newRS == nil && len(oldRSs) == 0 {
return nil
}
sort.Sort(sort.Reverse(controller.ReplicaSetsByCreationTimestamp(oldRSs)))
allRSs := controller.FilterActiveReplicaSets(append(oldRSs, newRS))
switch len(allRSs) {
case 0:
// If there is no active replica set then we should return the newest.
if newRS != nil {
return newRS
}
return oldRSs[0]
case 1:
return allRSs[0]
default:
return nil
}
}
// GetDesiredReplicasAnnotation returns the number of desired replicas
func GetDesiredReplicasAnnotation(rs *apps.ReplicaSet) (int32, bool) {
return getIntFromAnnotation(rs, DesiredReplicasAnnotation)
}
func getMaxReplicasAnnotation(rs *apps.ReplicaSet) (int32, bool) {
return getIntFromAnnotation(rs, MaxReplicasAnnotation)
}
func getIntFromAnnotation(rs *apps.ReplicaSet, annotationKey string) (int32, bool) {
annotationValue, ok := rs.Annotations[annotationKey]
if !ok {
return int32(0), false
}
intValue, err := strconv.Atoi(annotationValue)
if err != nil {
glog.V(2).Infof("Cannot convert the value %q with annotation key %q for the replica set %q", annotationValue, annotationKey, rs.Name)
return int32(0), false
}
return int32(intValue), true
}
// SetReplicasAnnotations sets the desiredReplicas and maxReplicas into the annotations
func SetReplicasAnnotations(rs *apps.ReplicaSet, desiredReplicas, maxReplicas int32) bool {
updated := false
if rs.Annotations == nil {
rs.Annotations = make(map[string]string)
}
desiredString := fmt.Sprintf("%d", desiredReplicas)
if hasString := rs.Annotations[DesiredReplicasAnnotation]; hasString != desiredString {
rs.Annotations[DesiredReplicasAnnotation] = desiredString
updated = true
}
maxString := fmt.Sprintf("%d", maxReplicas)
if hasString := rs.Annotations[MaxReplicasAnnotation]; hasString != maxString {
rs.Annotations[MaxReplicasAnnotation] = maxString
updated = true
}
return updated
}
// AnnotationsNeedUpdate return true if ReplicasAnnotations need to be updated
func ReplicasAnnotationsNeedUpdate(rs *apps.ReplicaSet, desiredReplicas, maxReplicas int32) bool {
if rs.Annotations == nil {
return true
}
desiredString := fmt.Sprintf("%d", desiredReplicas)
if hasString := rs.Annotations[DesiredReplicasAnnotation]; hasString != desiredString {
return true
}
maxString := fmt.Sprintf("%d", maxReplicas)
if hasString := rs.Annotations[MaxReplicasAnnotation]; hasString != maxString {
return true
}
return false
}
// MaxUnavailable returns the maximum unavailable pods a rolling deployment can take.
func MaxUnavailable(deployment apps.Deployment) int32 {
if !IsRollingUpdate(&deployment) || *(deployment.Spec.Replicas) == 0 {
return int32(0)
}
// Error caught by validation
_, maxUnavailable, _ := ResolveFenceposts(deployment.Spec.Strategy.RollingUpdate.MaxSurge, deployment.Spec.Strategy.RollingUpdate.MaxUnavailable, *(deployment.Spec.Replicas))
if maxUnavailable > *deployment.Spec.Replicas {
return *deployment.Spec.Replicas
}
return maxUnavailable
}
// MinAvailable returns the minimum available pods of a given deployment
func MinAvailable(deployment *apps.Deployment) int32 {
if !IsRollingUpdate(deployment) {
return int32(0)
}
return *(deployment.Spec.Replicas) - MaxUnavailable(*deployment)
}
// MaxSurge returns the maximum surge pods a rolling deployment can take.
func MaxSurge(deployment apps.Deployment) int32 {
if !IsRollingUpdate(&deployment) {
return int32(0)
}
// Error caught by validation
maxSurge, _, _ := ResolveFenceposts(deployment.Spec.Strategy.RollingUpdate.MaxSurge, deployment.Spec.Strategy.RollingUpdate.MaxUnavailable, *(deployment.Spec.Replicas))
return maxSurge
}
// GetProportion will estimate the proportion for the provided replica set using 1. the current size
// of the parent deployment, 2. the replica count that needs be added on the replica sets of the
// deployment, and 3. the total replicas added in the replica sets of the deployment so far.
func GetProportion(rs *apps.ReplicaSet, d apps.Deployment, deploymentReplicasToAdd, deploymentReplicasAdded int32) int32 {
if rs == nil || *(rs.Spec.Replicas) == 0 || deploymentReplicasToAdd == 0 || deploymentReplicasToAdd == deploymentReplicasAdded {
return int32(0)
}
rsFraction := getReplicaSetFraction(*rs, d)
allowed := deploymentReplicasToAdd - deploymentReplicasAdded
if deploymentReplicasToAdd > 0 {
// Use the minimum between the replica set fraction and the maximum allowed replicas
// when scaling up. This way we ensure we will not scale up more than the allowed
// replicas we can add.
return integer.Int32Min(rsFraction, allowed)
}
// Use the maximum between the replica set fraction and the maximum allowed replicas
// when scaling down. This way we ensure we will not scale down more than the allowed
// replicas we can remove.
return integer.Int32Max(rsFraction, allowed)
}
// getReplicaSetFraction estimates the fraction of replicas a replica set can have in
// 1. a scaling event during a rollout or 2. when scaling a paused deployment.
func getReplicaSetFraction(rs apps.ReplicaSet, d apps.Deployment) int32 {
// If we are scaling down to zero then the fraction of this replica set is its whole size (negative)
if *(d.Spec.Replicas) == int32(0) {
return -*(rs.Spec.Replicas)
}
deploymentReplicas := *(d.Spec.Replicas) + MaxSurge(d)
annotatedReplicas, ok := getMaxReplicasAnnotation(&rs)
if !ok {
// If we cannot find the annotation then fallback to the current deployment size. Note that this
// will not be an accurate proportion estimation in case other replica sets have different values
// which means that the deployment was scaled at some point but we at least will stay in limits
// due to the min-max comparisons in getProportion.
annotatedReplicas = d.Status.Replicas
}
// We should never proportionally scale up from zero which means rs.spec.replicas and annotatedReplicas
// will never be zero here.
newRSsize := (float64(*(rs.Spec.Replicas) * deploymentReplicas)) / float64(annotatedReplicas)
return integer.RoundToInt32(newRSsize) - *(rs.Spec.Replicas)
}
// GetAllReplicaSets returns the old and new replica sets targeted by the given Deployment. It gets PodList and ReplicaSetList from client interface.
// Note that the first set of old replica sets doesn't include the ones with no pods, and the second set of old replica sets include all old replica sets.
// The third returned value is the new replica set, and it may be nil if it doesn't exist yet.
func GetAllReplicaSets(deployment *apps.Deployment, c appsclient.AppsV1Interface) ([]*apps.ReplicaSet, []*apps.ReplicaSet, *apps.ReplicaSet, error) {
rsList, err := ListReplicaSets(deployment, RsListFromClient(c))
if err != nil {
return nil, nil, nil, err
}
oldRSes, allOldRSes := FindOldReplicaSets(deployment, rsList)
newRS := FindNewReplicaSet(deployment, rsList)
return oldRSes, allOldRSes, newRS, nil
}
// GetOldReplicaSets returns the old replica sets targeted by the given Deployment; get PodList and ReplicaSetList from client interface.
// Note that the first set of old replica sets doesn't include the ones with no pods, and the second set of old replica sets include all old replica sets.
func GetOldReplicaSets(deployment *apps.Deployment, c appsclient.AppsV1Interface) ([]*apps.ReplicaSet, []*apps.ReplicaSet, error) {
rsList, err := ListReplicaSets(deployment, RsListFromClient(c))
if err != nil {
return nil, nil, err
}
oldRSes, allOldRSes := FindOldReplicaSets(deployment, rsList)
return oldRSes, allOldRSes, nil
}
// GetNewReplicaSet returns a replica set that matches the intent of the given deployment; get ReplicaSetList from client interface.
// Returns nil if the new replica set doesn't exist yet.
func GetNewReplicaSet(deployment *apps.Deployment, c appsclient.AppsV1Interface) (*apps.ReplicaSet, error) {
rsList, err := ListReplicaSets(deployment, RsListFromClient(c))
if err != nil {
return nil, err
}
return FindNewReplicaSet(deployment, rsList), nil
}
// RsListFromClient returns an rsListFunc that wraps the given client.
func RsListFromClient(c appsclient.AppsV1Interface) RsListFunc {
return func(namespace string, options metav1.ListOptions) ([]*apps.ReplicaSet, error) {
rsList, err := c.ReplicaSets(namespace).List(options)
if err != nil {
return nil, err
}
var ret []*apps.ReplicaSet
for i := range rsList.Items {
ret = append(ret, &rsList.Items[i])
}
return ret, err
}
}
// TODO: switch this to full namespacers
type RsListFunc func(string, metav1.ListOptions) ([]*apps.ReplicaSet, error)
type podListFunc func(string, metav1.ListOptions) (*v1.PodList, error)
// ListReplicaSets returns a slice of RSes the given deployment targets.
// Note that this does NOT attempt to reconcile ControllerRef (adopt/orphan),
// because only the controller itself should do that.
// However, it does filter out anything whose ControllerRef doesn't match.
func ListReplicaSets(deployment *apps.Deployment, getRSList RsListFunc) ([]*apps.ReplicaSet, error) {
// TODO: Right now we list replica sets by their labels. We should list them by selector, i.e. the replica set's selector
// should be a superset of the deployment's selector, see https://github.com/kubernetes/kubernetes/issues/19830.
namespace := deployment.Namespace
selector, err := metav1.LabelSelectorAsSelector(deployment.Spec.Selector)
if err != nil {
return nil, err
}
options := metav1.ListOptions{LabelSelector: selector.String()}
all, err := getRSList(namespace, options)
if err != nil {
return nil, err
}
// Only include those whose ControllerRef matches the Deployment.
owned := make([]*apps.ReplicaSet, 0, len(all))
for _, rs := range all {
if metav1.IsControlledBy(rs, deployment) {
owned = append(owned, rs)
}
}
return owned, nil
}
// ListReplicaSetsInternal is ListReplicaSets for internalextensions.
// TODO: Remove the duplicate when call sites are updated to ListReplicaSets.
func ListReplicaSetsInternal(deployment *internalextensions.Deployment, getRSList func(string, metav1.ListOptions) ([]*internalextensions.ReplicaSet, error)) ([]*internalextensions.ReplicaSet, error) {
namespace := deployment.Namespace
selector, err := metav1.LabelSelectorAsSelector(deployment.Spec.Selector)
if err != nil {
return nil, err
}
options := metav1.ListOptions{LabelSelector: selector.String()}
all, err := getRSList(namespace, options)
if err != nil {
return nil, err
}
// Only include those whose ControllerRef matches the Deployment.
filtered := make([]*internalextensions.ReplicaSet, 0, len(all))
for _, rs := range all {
if metav1.IsControlledBy(rs, deployment) {
filtered = append(filtered, rs)
}
}
return filtered, nil
}
// ListPods returns a list of pods the given deployment targets.
// This needs a list of ReplicaSets for the Deployment,
// which can be found with ListReplicaSets().
// Note that this does NOT attempt to reconcile ControllerRef (adopt/orphan),
// because only the controller itself should do that.
// However, it does filter out anything whose ControllerRef doesn't match.
func ListPods(deployment *apps.Deployment, rsList []*apps.ReplicaSet, getPodList podListFunc) (*v1.PodList, error) {
namespace := deployment.Namespace
selector, err := metav1.LabelSelectorAsSelector(deployment.Spec.Selector)
if err != nil {
return nil, err
}
options := metav1.ListOptions{LabelSelector: selector.String()}
all, err := getPodList(namespace, options)
if err != nil {
return all, err
}
// Only include those whose ControllerRef points to a ReplicaSet that is in
// turn owned by this Deployment.
rsMap := make(map[types.UID]bool, len(rsList))
for _, rs := range rsList {
rsMap[rs.UID] = true
}
owned := &v1.PodList{Items: make([]v1.Pod, 0, len(all.Items))}
for i := range all.Items {
pod := &all.Items[i]
controllerRef := metav1.GetControllerOf(pod)
if controllerRef != nil && rsMap[controllerRef.UID] {
owned.Items = append(owned.Items, *pod)
}
}
return owned, nil
}
// EqualIgnoreHash returns true if two given podTemplateSpec are equal, ignoring the diff in value of Labels[pod-template-hash]
// We ignore pod-template-hash because:
// 1. The hash result would be different upon podTemplateSpec API changes
// (e.g. the addition of a new field will cause the hash code to change)
// 2. The deployment template won't have hash labels
func EqualIgnoreHash(template1, template2 *v1.PodTemplateSpec) bool {
t1Copy := template1.DeepCopy()
t2Copy := template2.DeepCopy()
// Remove hash labels from template.Labels before comparing
delete(t1Copy.Labels, apps.DefaultDeploymentUniqueLabelKey)
delete(t2Copy.Labels, apps.DefaultDeploymentUniqueLabelKey)
return apiequality.Semantic.DeepEqual(t1Copy, t2Copy)
}
// FindNewReplicaSet returns the new RS this given deployment targets (the one with the same pod template).
func FindNewReplicaSet(deployment *apps.Deployment, rsList []*apps.ReplicaSet) *apps.ReplicaSet {
sort.Sort(controller.ReplicaSetsByCreationTimestamp(rsList))
for i := range rsList {
if EqualIgnoreHash(&rsList[i].Spec.Template, &deployment.Spec.Template) {
// In rare cases, such as after cluster upgrades, Deployment may end up with
// having more than one new ReplicaSets that have the same template as its template,
// see https://github.com/kubernetes/kubernetes/issues/40415
// We deterministically choose the oldest new ReplicaSet.
return rsList[i]
}
}
// new ReplicaSet does not exist.
return nil
}
// FindOldReplicaSets returns the old replica sets targeted by the given Deployment, with the given slice of RSes.
// Note that the first set of old replica sets doesn't include the ones with no pods, and the second set of old replica sets include all old replica sets.
func FindOldReplicaSets(deployment *apps.Deployment, rsList []*apps.ReplicaSet) ([]*apps.ReplicaSet, []*apps.ReplicaSet) {
var requiredRSs []*apps.ReplicaSet
var allRSs []*apps.ReplicaSet
newRS := FindNewReplicaSet(deployment, rsList)
for _, rs := range rsList {
// Filter out new replica set
if newRS != nil && rs.UID == newRS.UID {
continue
}
allRSs = append(allRSs, rs)
if *(rs.Spec.Replicas) != 0 {
requiredRSs = append(requiredRSs, rs)
}
}
return requiredRSs, allRSs
}
// SetFromReplicaSetTemplate sets the desired PodTemplateSpec from a replica set template to the given deployment.
func SetFromReplicaSetTemplate(deployment *apps.Deployment, template v1.PodTemplateSpec) *apps.Deployment {
deployment.Spec.Template.ObjectMeta = template.ObjectMeta
deployment.Spec.Template.Spec = template.Spec
deployment.Spec.Template.ObjectMeta.Labels = labelsutil.CloneAndRemoveLabel(
deployment.Spec.Template.ObjectMeta.Labels,
apps.DefaultDeploymentUniqueLabelKey)
return deployment
}
// GetReplicaCountForReplicaSets returns the sum of Replicas of the given replica sets.
func GetReplicaCountForReplicaSets(replicaSets []*apps.ReplicaSet) int32 {
totalReplicas := int32(0)
for _, rs := range replicaSets {
if rs != nil {
totalReplicas += *(rs.Spec.Replicas)
}
}
return totalReplicas
}
// GetActualReplicaCountForReplicaSets returns the sum of actual replicas of the given replica sets.
func GetActualReplicaCountForReplicaSets(replicaSets []*apps.ReplicaSet) int32 {
totalActualReplicas := int32(0)
for _, rs := range replicaSets {
if rs != nil {
totalActualReplicas += rs.Status.Replicas
}
}
return totalActualReplicas
}
// GetReadyReplicaCountForReplicaSets returns the number of ready pods corresponding to the given replica sets.
func GetReadyReplicaCountForReplicaSets(replicaSets []*apps.ReplicaSet) int32 {
totalReadyReplicas := int32(0)
for _, rs := range replicaSets {
if rs != nil {
totalReadyReplicas += rs.Status.ReadyReplicas
}
}
return totalReadyReplicas
}
// GetAvailableReplicaCountForReplicaSets returns the number of available pods corresponding to the given replica sets.
func GetAvailableReplicaCountForReplicaSets(replicaSets []*apps.ReplicaSet) int32 {
totalAvailableReplicas := int32(0)
for _, rs := range replicaSets {
if rs != nil {
totalAvailableReplicas += rs.Status.AvailableReplicas
}
}
return totalAvailableReplicas
}
// IsRollingUpdate returns true if the strategy type is a rolling update.
func IsRollingUpdate(deployment *apps.Deployment) bool {
return deployment.Spec.Strategy.Type == apps.RollingUpdateDeploymentStrategyType
}
// DeploymentComplete considers a deployment to be complete once all of its desired replicas
// are updated and available, and no old pods are running.
func DeploymentComplete(deployment *apps.Deployment, newStatus *apps.DeploymentStatus) bool {
return newStatus.UpdatedReplicas == *(deployment.Spec.Replicas) &&
newStatus.Replicas == *(deployment.Spec.Replicas) &&
newStatus.AvailableReplicas == *(deployment.Spec.Replicas) &&
newStatus.ObservedGeneration >= deployment.Generation
}
// DeploymentProgressing reports progress for a deployment. Progress is estimated by comparing the
// current with the new status of the deployment that the controller is observing. More specifically,
// when new pods are scaled up or become ready or available, or old pods are scaled down, then we
// consider the deployment is progressing.
func DeploymentProgressing(deployment *apps.Deployment, newStatus *apps.DeploymentStatus) bool {
oldStatus := deployment.Status
// Old replicas that need to be scaled down
oldStatusOldReplicas := oldStatus.Replicas - oldStatus.UpdatedReplicas
newStatusOldReplicas := newStatus.Replicas - newStatus.UpdatedReplicas
return (newStatus.UpdatedReplicas > oldStatus.UpdatedReplicas) ||
(newStatusOldReplicas < oldStatusOldReplicas) ||
newStatus.ReadyReplicas > deployment.Status.ReadyReplicas ||
newStatus.AvailableReplicas > deployment.Status.AvailableReplicas
}
// used for unit testing
var nowFn = func() time.Time { return time.Now() }
// DeploymentTimedOut considers a deployment to have timed out once its condition that reports progress
// is older than progressDeadlineSeconds or a Progressing condition with a TimedOutReason reason already
// exists.
func DeploymentTimedOut(deployment *apps.Deployment, newStatus *apps.DeploymentStatus) bool {
if deployment.Spec.ProgressDeadlineSeconds == nil {
return false
}
// Look for the Progressing condition. If it doesn't exist, we have no base to estimate progress.
// If it's already set with a TimedOutReason reason, we have already timed out, no need to check
// again.
condition := GetDeploymentCondition(*newStatus, apps.DeploymentProgressing)
if condition == nil {
return false
}
// If the previous condition has been a successful rollout then we shouldn't try to
// estimate any progress. Scenario:
//
// * progressDeadlineSeconds is smaller than the difference between now and the time
// the last rollout finished in the past.
// * the creation of a new ReplicaSet triggers a resync of the Deployment prior to the
// cached copy of the Deployment getting updated with the status.condition that indicates
// the creation of the new ReplicaSet.
//
// The Deployment will be resynced and eventually its Progressing condition will catch
// up with the state of the world.
if condition.Reason == NewRSAvailableReason {
return false
}
if condition.Reason == TimedOutReason {
return true
}
// Look at the difference in seconds between now and the last time we reported any
// progress or tried to create a replica set, or resumed a paused deployment and
// compare against progressDeadlineSeconds.
from := condition.LastUpdateTime
now := nowFn()
delta := time.Duration(*deployment.Spec.ProgressDeadlineSeconds) * time.Second
timedOut := from.Add(delta).Before(now)
glog.V(4).Infof("Deployment %q timed out (%t) [last progress check: %v - now: %v]", deployment.Name, timedOut, from, now)
return timedOut
}
// NewRSNewReplicas calculates the number of replicas a deployment's new RS should have.
// When one of the followings is true, we're rolling out the deployment; otherwise, we're scaling it.
// 1) The new RS is saturated: newRS's replicas == deployment's replicas
// 2) Max number of pods allowed is reached: deployment's replicas + maxSurge == all RSs' replicas
func NewRSNewReplicas(deployment *apps.Deployment, allRSs []*apps.ReplicaSet, newRS *apps.ReplicaSet) (int32, error) {
switch deployment.Spec.Strategy.Type {
case apps.RollingUpdateDeploymentStrategyType:
// Check if we can scale up.
maxSurge, err := intstrutil.GetValueFromIntOrPercent(deployment.Spec.Strategy.RollingUpdate.MaxSurge, int(*(deployment.Spec.Replicas)), true)
if err != nil {
return 0, err
}
// Find the total number of pods
currentPodCount := GetReplicaCountForReplicaSets(allRSs)
maxTotalPods := *(deployment.Spec.Replicas) + int32(maxSurge)
if currentPodCount >= maxTotalPods {
// Cannot scale up.
return *(newRS.Spec.Replicas), nil
}
// Scale up.
scaleUpCount := maxTotalPods - currentPodCount
// Do not exceed the number of desired replicas.
scaleUpCount = int32(integer.IntMin(int(scaleUpCount), int(*(deployment.Spec.Replicas)-*(newRS.Spec.Replicas))))
return *(newRS.Spec.Replicas) + scaleUpCount, nil
case apps.RecreateDeploymentStrategyType:
return *(deployment.Spec.Replicas), nil
default:
return 0, fmt.Errorf("deployment type %v isn't supported", deployment.Spec.Strategy.Type)
}
}
// IsSaturated checks if the new replica set is saturated by comparing its size with its deployment size.
// Both the deployment and the replica set have to believe this replica set can own all of the desired
// replicas in the deployment and the annotation helps in achieving that. All pods of the ReplicaSet
// need to be available.
func IsSaturated(deployment *apps.Deployment, rs *apps.ReplicaSet) bool {
if rs == nil {
return false
}
desiredString := rs.Annotations[DesiredReplicasAnnotation]
desired, err := strconv.Atoi(desiredString)
if err != nil {
return false
}
return *(rs.Spec.Replicas) == *(deployment.Spec.Replicas) &&
int32(desired) == *(deployment.Spec.Replicas) &&
rs.Status.AvailableReplicas == *(deployment.Spec.Replicas)
}
// WaitForObservedDeployment polls for deployment to be updated so that deployment.Status.ObservedGeneration >= desiredGeneration.
// Returns error if polling timesout.
func WaitForObservedDeployment(getDeploymentFunc func() (*apps.Deployment, error), desiredGeneration int64, interval, timeout time.Duration) error {
// TODO: This should take clientset.Interface when all code is updated to use clientset. Keeping it this way allows the function to be used by callers who have client.Interface.
return wait.PollImmediate(interval, timeout, func() (bool, error) {
deployment, err := getDeploymentFunc()
if err != nil {
return false, err
}
return deployment.Status.ObservedGeneration >= desiredGeneration, nil
})
}
// TODO: remove the duplicate
// WaitForObservedInternalDeployment polls for deployment to be updated so that deployment.Status.ObservedGeneration >= desiredGeneration.
// Returns error if polling timesout.
func WaitForObservedDeploymentInternal(getDeploymentFunc func() (*internalextensions.Deployment, error), desiredGeneration int64, interval, timeout time.Duration) error {
return wait.Poll(interval, timeout, func() (bool, error) {
deployment, err := getDeploymentFunc()
if err != nil {
return false, err
}
return deployment.Status.ObservedGeneration >= desiredGeneration, nil
})
}
// ResolveFenceposts resolves both maxSurge and maxUnavailable. This needs to happen in one
// step. For example:
//
// 2 desired, max unavailable 1%, surge 0% - should scale old(-1), then new(+1), then old(-1), then new(+1)
// 1 desired, max unavailable 1%, surge 0% - should scale old(-1), then new(+1)
// 2 desired, max unavailable 25%, surge 1% - should scale new(+1), then old(-1), then new(+1), then old(-1)
// 1 desired, max unavailable 25%, surge 1% - should scale new(+1), then old(-1)
// 2 desired, max unavailable 0%, surge 1% - should scale new(+1), then old(-1), then new(+1), then old(-1)
// 1 desired, max unavailable 0%, surge 1% - should scale new(+1), then old(-1)
func ResolveFenceposts(maxSurge, maxUnavailable *intstrutil.IntOrString, desired int32) (int32, int32, error) {
surge, err := intstrutil.GetValueFromIntOrPercent(maxSurge, int(desired), true)
if err != nil {
return 0, 0, err
}
unavailable, err := intstrutil.GetValueFromIntOrPercent(maxUnavailable, int(desired), false)
if err != nil {
return 0, 0, err
}
if surge == 0 && unavailable == 0 {
// Validation should never allow the user to explicitly use zero values for both maxSurge
// maxUnavailable. Due to rounding down maxUnavailable though, it may resolve to zero.
// If both fenceposts resolve to zero, then we should set maxUnavailable to 1 on the
// theory that surge might not work due to quota.
unavailable = 1
}
return int32(surge), int32(unavailable), nil
}

1353
vendor/k8s.io/kubernetes/pkg/controller/deployment/util/deployment_util_test.go generated vendored
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vendor/k8s.io/kubernetes/pkg/controller/deployment/util/hash_test.go generated vendored
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@ -1,145 +0,0 @@
/*
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 util
import (
"encoding/json"
"hash/adler32"
"strconv"
"strings"
"testing"
"k8s.io/api/core/v1"
"k8s.io/kubernetes/pkg/controller"
hashutil "k8s.io/kubernetes/pkg/util/hash"
)
var podSpec string = `
{
"metadata": {
"creationTimestamp": null,
"labels": {
"app": "cats"
}
},
"spec": {
"containers": [
{
"name": "cats",
"image": "registry/test/cats:v0.@@VERSION@@.0",
"ports": [
{
"name": "http",
"containerPort": 9077,
"protocol": "TCP"
}
],
"env": [
{
"name": "DEPLOYMENT_ENVIRONMENT",
"value": "cats-stubbed-functional"
},
{
"name": "APP_NAME",
"value": "cats"
}
],
"resources": {
"limits": {
"cpu": "1",
"memory": "1Gi"
},
"requests": {
"cpu": "1",
"memory": "1Gi"
}
},
"livenessProbe": {
"httpGet": {
"path": "/private/status",
"port": 9077,
"scheme": "HTTP"
},
"initialDelaySeconds": 30,
"timeoutSeconds": 1,
"periodSeconds": 10,
"successThreshold": 1,
"failureThreshold": 3
},
"readinessProbe": {
"httpGet": {
"path": "/private/status",
"port": 9077,
"scheme": "HTTP"
},
"initialDelaySeconds": 1,
"timeoutSeconds": 1,
"periodSeconds": 10,
"successThreshold": 1,
"failureThreshold": 3
},
"terminationMessagePath": "/dev/termination-log",
"imagePullPolicy": "IfNotPresent"
}
],
"restartPolicy": "Always",
"terminationGracePeriodSeconds": 30,
"dnsPolicy": "ClusterFirst",
"securityContext": {}
}
}
`
func TestPodTemplateSpecHash(t *testing.T) {
seenHashes := make(map[uint32]int)
for i := 0; i < 1000; i++ {
specJson := strings.Replace(podSpec, "@@VERSION@@", strconv.Itoa(i), 1)
spec := v1.PodTemplateSpec{}
json.Unmarshal([]byte(specJson), &spec)
hash := controller.ComputeHash(&spec, nil)
if v, ok := seenHashes[hash]; ok {
t.Errorf("Hash collision, old: %d new: %d", v, i)
break
}
seenHashes[hash] = i
}
}
func BenchmarkAdler(b *testing.B) {
spec := v1.PodTemplateSpec{}
json.Unmarshal([]byte(podSpec), &spec)
for i := 0; i < b.N; i++ {
getPodTemplateSpecOldHash(spec)
}
}
func getPodTemplateSpecOldHash(template v1.PodTemplateSpec) uint32 {
podTemplateSpecHasher := adler32.New()
hashutil.DeepHashObject(podTemplateSpecHasher, template)
return podTemplateSpecHasher.Sum32()
}
func BenchmarkFnv(b *testing.B) {
spec := v1.PodTemplateSpec{}
json.Unmarshal([]byte(podSpec), &spec)
for i := 0; i < b.N; i++ {
controller.ComputeHash(&spec, nil)
}
}

60
vendor/k8s.io/kubernetes/pkg/controller/deployment/util/pod_util.go generated vendored
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@ -1,60 +0,0 @@
/*
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 util
import (
"github.com/golang/glog"
"k8s.io/api/core/v1"
errorsutil "k8s.io/apimachinery/pkg/util/errors"
v1core "k8s.io/client-go/kubernetes/typed/core/v1"
corelisters "k8s.io/client-go/listers/core/v1"
"k8s.io/client-go/util/retry"
)
// TODO: use client library instead when it starts to support update retries
// see https://github.com/kubernetes/kubernetes/issues/21479
type updatePodFunc func(pod *v1.Pod) error
// UpdatePodWithRetries updates a pod with given applyUpdate function.
func UpdatePodWithRetries(podClient v1core.PodInterface, podLister corelisters.PodLister, namespace, name string, applyUpdate updatePodFunc) (*v1.Pod, error) {
var pod *v1.Pod
retryErr := retry.RetryOnConflict(retry.DefaultBackoff, func() error {
var err error
pod, err = podLister.Pods(namespace).Get(name)
if err != nil {
return err
}
pod = pod.DeepCopy()
// Apply the update, then attempt to push it to the apiserver.
if applyErr := applyUpdate(pod); applyErr != nil {
return applyErr
}
pod, err = podClient.Update(pod)
return err
})
// Ignore the precondition violated error, this pod is already updated
// with the desired label.
if retryErr == errorsutil.ErrPreconditionViolated {
glog.V(4).Infof("Pod %s/%s precondition doesn't hold, skip updating it.", namespace, name)
retryErr = nil
}
return pod, retryErr
}

60
vendor/k8s.io/kubernetes/pkg/controller/deployment/util/replicaset_util.go generated vendored
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@ -1,60 +0,0 @@
/*
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 util
import (
"github.com/golang/glog"
apps "k8s.io/api/apps/v1"
errorsutil "k8s.io/apimachinery/pkg/util/errors"
appsclient "k8s.io/client-go/kubernetes/typed/apps/v1"
appslisters "k8s.io/client-go/listers/apps/v1"
"k8s.io/client-go/util/retry"
)
// TODO: use client library instead when it starts to support update retries
// see https://github.com/kubernetes/kubernetes/issues/21479
type updateRSFunc func(rs *apps.ReplicaSet) error
// UpdateRSWithRetries updates a RS with given applyUpdate function. Note that RS not found error is ignored.
// The returned bool value can be used to tell if the RS is actually updated.
func UpdateRSWithRetries(rsClient appsclient.ReplicaSetInterface, rsLister appslisters.ReplicaSetLister, namespace, name string, applyUpdate updateRSFunc) (*apps.ReplicaSet, error) {
var rs *apps.ReplicaSet
retryErr := retry.RetryOnConflict(retry.DefaultBackoff, func() error {
var err error
rs, err = rsLister.ReplicaSets(namespace).Get(name)
if err != nil {
return err
}
rs = rs.DeepCopy()
// Apply the update, then attempt to push it to the apiserver.
if applyErr := applyUpdate(rs); applyErr != nil {
return applyErr
}
rs, err = rsClient.Update(rs)
return err
})
// Ignore the precondition violated error, but the RS isn't updated.
if retryErr == errorsutil.ErrPreconditionViolated {
glog.V(4).Infof("Replica set %s/%s precondition doesn't hold, skip updating it.", namespace, name)
retryErr = nil
}
return rs, retryErr
}