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uniteddeployment_controller.go
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uniteddeployment_controller.go
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/*
Copyright 2019 The Kruise 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 uniteddeployment
import (
"context"
"flag"
"fmt"
"reflect"
appsv1alpha1 "github.com/openkruise/kruise/apis/apps/v1alpha1"
appsv1beta1 "github.com/openkruise/kruise/apis/apps/v1beta1"
"github.com/openkruise/kruise/pkg/controller/uniteddeployment/adapter"
utilclient "github.com/openkruise/kruise/pkg/util/client"
utildiscovery "github.com/openkruise/kruise/pkg/util/discovery"
"github.com/openkruise/kruise/pkg/util/ratelimiter"
appsv1 "k8s.io/api/apps/v1"
corev1 "k8s.io/api/core/v1"
"k8s.io/apimachinery/pkg/api/errors"
"k8s.io/apimachinery/pkg/runtime"
"k8s.io/client-go/tools/record"
"k8s.io/klog/v2"
"sigs.k8s.io/controller-runtime/pkg/client"
"sigs.k8s.io/controller-runtime/pkg/controller"
"sigs.k8s.io/controller-runtime/pkg/handler"
"sigs.k8s.io/controller-runtime/pkg/manager"
"sigs.k8s.io/controller-runtime/pkg/reconcile"
"sigs.k8s.io/controller-runtime/pkg/source"
)
func init() {
flag.IntVar(&concurrentReconciles, "uniteddeployment-workers", concurrentReconciles, "Max concurrent workers for UnitedDeployment controller.")
}
var (
concurrentReconciles = 3
controllerKind = appsv1alpha1.SchemeGroupVersion.WithKind("UnitedDeployment")
)
const (
controllerName = "uniteddeployment-controller"
eventTypeRevisionProvision = "RevisionProvision"
eventTypeFindSubsets = "FindSubsets"
eventTypeDupSubsetsDelete = "DeleteDuplicatedSubsets"
eventTypeSubsetsUpdate = "UpdateSubset"
eventTypeSpecifySubbsetReplicas = "SpecifySubsetReplicas"
slowStartInitialBatchSize = 1
)
type subSetType string
const (
statefulSetSubSetType subSetType = "StatefulSet"
advancedStatefulSetSubSetType subSetType = "AdvancedStatefulSet"
cloneSetSubSetType subSetType = "CloneSet"
deploymentSubSetType subSetType = "Deployment"
)
// Add creates a new UnitedDeployment Controller and adds it to the Manager with default RBAC. The Manager will set fields on the Controller
// and Start it when the Manager is Started.
func Add(mgr manager.Manager) error {
if !utildiscovery.DiscoverGVK(controllerKind) {
return nil
}
return add(mgr, newReconciler(mgr))
}
// newReconciler returns a new reconcile.Reconciler
func newReconciler(mgr manager.Manager) reconcile.Reconciler {
cli := utilclient.NewClientFromManager(mgr, "uniteddeployment-controller")
return &ReconcileUnitedDeployment{
Client: cli,
scheme: mgr.GetScheme(),
recorder: mgr.GetEventRecorderFor(controllerName),
subSetControls: map[subSetType]ControlInterface{
statefulSetSubSetType: &SubsetControl{Client: cli, scheme: mgr.GetScheme(), adapter: &adapter.StatefulSetAdapter{Client: cli, Scheme: mgr.GetScheme()}},
advancedStatefulSetSubSetType: &SubsetControl{Client: cli, scheme: mgr.GetScheme(), adapter: &adapter.AdvancedStatefulSetAdapter{Client: cli, Scheme: mgr.GetScheme()}},
cloneSetSubSetType: &SubsetControl{Client: cli, scheme: mgr.GetScheme(), adapter: &adapter.CloneSetAdapter{Client: cli, Scheme: mgr.GetScheme()}},
deploymentSubSetType: &SubsetControl{Client: cli, scheme: mgr.GetScheme(), adapter: &adapter.DeploymentAdapter{Client: cli, Scheme: mgr.GetScheme()}},
},
}
}
// add adds a new Controller to mgr with r as the reconcile.Reconciler
func add(mgr manager.Manager, r reconcile.Reconciler) error {
// Create a new controller
c, err := controller.New(controllerName, mgr, controller.Options{
Reconciler: r, MaxConcurrentReconciles: concurrentReconciles,
RateLimiter: ratelimiter.DefaultControllerRateLimiter()})
if err != nil {
return err
}
// Watch for changes to UnitedDeployment
err = c.Watch(&source.Kind{Type: &appsv1alpha1.UnitedDeployment{}}, &handler.EnqueueRequestForObject{})
if err != nil {
return err
}
err = c.Watch(&source.Kind{Type: &appsv1.StatefulSet{}}, &handler.EnqueueRequestForOwner{
IsController: true,
OwnerType: &appsv1alpha1.UnitedDeployment{},
})
if err != nil {
return err
}
err = c.Watch(&source.Kind{Type: &appsv1beta1.StatefulSet{}}, &handler.EnqueueRequestForOwner{
IsController: true,
OwnerType: &appsv1alpha1.UnitedDeployment{},
})
if err != nil {
return err
}
err = c.Watch(&source.Kind{Type: &appsv1alpha1.CloneSet{}}, &handler.EnqueueRequestForOwner{
IsController: true,
OwnerType: &appsv1alpha1.UnitedDeployment{},
})
if err != nil {
return err
}
err = c.Watch(&source.Kind{Type: &appsv1.Deployment{}}, &handler.EnqueueRequestForOwner{
IsController: true,
OwnerType: &appsv1alpha1.UnitedDeployment{},
})
if err != nil {
return err
}
return nil
}
var _ reconcile.Reconciler = &ReconcileUnitedDeployment{}
// ReconcileUnitedDeployment reconciles a UnitedDeployment object
type ReconcileUnitedDeployment struct {
client.Client
scheme *runtime.Scheme
recorder record.EventRecorder
subSetControls map[subSetType]ControlInterface
}
// +kubebuilder:rbac:groups=apps.kruise.io,resources=uniteddeployments,verbs=get;list;watch;create;update;patch;delete
// +kubebuilder:rbac:groups=apps.kruise.io,resources=uniteddeployments/status,verbs=get;update;patch
// +kubebuilder:rbac:groups=apps,resources=statefulsets,verbs=get;list;watch;create;update;patch;delete
// +kubebuilder:rbac:groups=apps,resources=statefulsets/status,verbs=get;update;patch
// +kubebuilder:rbac:groups=apps.kruise.io,resources=statefulsets,verbs=get;list;watch;create;update;patch;delete
// +kubebuilder:rbac:groups=apps.kruise.io,resources=statefulsets/status,verbs=get;update;patch
// +kubebuilder:rbac:groups=apps,resources=deployments,verbs=get;list;watch;create;update;patch;delete
// +kubebuilder:rbac:groups=apps,resources=deployments/status,verbs=get;update;patch
// +kubebuilder:rbac:groups=apps,resources=replicasets,verbs=get;list;watch
// +kubebuilder:rbac:groups=apps,resources=replicasets/status,verbs=get
// Reconcile reads that state of the cluster for a UnitedDeployment object and makes changes based on the state read
// and what is in the UnitedDeployment.Spec
func (r *ReconcileUnitedDeployment) Reconcile(_ context.Context, request reconcile.Request) (reconcile.Result, error) {
klog.V(4).Infof("Reconcile UnitedDeployment %s/%s", request.Namespace, request.Name)
// Fetch the UnitedDeployment instance
instance := &appsv1alpha1.UnitedDeployment{}
err := r.Get(context.TODO(), request.NamespacedName, instance)
if err != nil {
if errors.IsNotFound(err) {
return reconcile.Result{}, nil
}
return reconcile.Result{}, err
}
if instance.DeletionTimestamp != nil {
return reconcile.Result{}, nil
}
oldStatus := instance.Status.DeepCopy()
currentRevision, updatedRevision, _, collisionCount, err := r.constructUnitedDeploymentRevisions(instance)
if err != nil {
klog.Errorf("Fail to construct controller revision of UnitedDeployment %s/%s: %s", instance.Namespace, instance.Name, err)
r.recorder.Event(instance.DeepCopy(), corev1.EventTypeWarning, fmt.Sprintf("Failed%s", eventTypeRevisionProvision), err.Error())
return reconcile.Result{}, err
}
control, subsetType := r.getSubsetControls(instance)
klog.V(4).Infof("Get UnitedDeployment %s/%s all subsets", request.Namespace, request.Name)
expectedRevision := currentRevision.Name
if updatedRevision != nil {
expectedRevision = updatedRevision.Name
}
nameToSubset, err := r.getNameToSubset(instance, control, expectedRevision)
if err != nil {
klog.Errorf("Fail to get Subsets of UnitedDeployment %s/%s: %s", instance.Namespace, instance.Name, err)
r.recorder.Event(instance.DeepCopy(), corev1.EventTypeWarning, fmt.Sprintf("Failed %s",
eventTypeFindSubsets), err.Error())
return reconcile.Result{}, err
}
nextReplicas, err := GetAllocatedReplicas(nameToSubset, instance)
klog.V(4).Infof("Get UnitedDeployment %s/%s next replicas %v", instance.Namespace, instance.Name, nextReplicas)
if err != nil {
klog.Errorf("UnitedDeployment %s/%s Specified subset replicas is ineffective: %s",
instance.Namespace, instance.Name, err.Error())
r.recorder.Eventf(instance.DeepCopy(), corev1.EventTypeWarning, fmt.Sprintf("Failed %s",
eventTypeSpecifySubbsetReplicas), "Specified subset replicas is ineffective: %s", err.Error())
return reconcile.Result{}, err
}
nextPartitions := calcNextPartitions(instance, nextReplicas)
klog.V(4).Infof("Get UnitedDeployment %s/%s next partition %v", instance.Namespace, instance.Name, nextPartitions)
newStatus, err := r.manageSubsets(instance, nameToSubset, nextReplicas, nextPartitions, currentRevision, updatedRevision, subsetType)
if err != nil {
klog.Errorf("Fail to update UnitedDeployment %s/%s: %s", instance.Namespace, instance.Name, err)
r.recorder.Event(instance.DeepCopy(), corev1.EventTypeWarning, fmt.Sprintf("Failed%s", eventTypeSubsetsUpdate), err.Error())
return reconcile.Result{}, err
}
return r.updateStatus(instance, newStatus, oldStatus, nameToSubset, nextReplicas, nextPartitions, currentRevision, updatedRevision, collisionCount, control)
}
func (r *ReconcileUnitedDeployment) getNameToSubset(instance *appsv1alpha1.UnitedDeployment, control ControlInterface, expectedRevision string) (*map[string]*Subset, error) {
subSets, err := control.GetAllSubsets(instance, expectedRevision)
if err != nil {
r.recorder.Event(instance.DeepCopy(), corev1.EventTypeWarning, fmt.Sprintf("Failed%s", eventTypeFindSubsets), err.Error())
return nil, fmt.Errorf("fail to get all Subsets for UnitedDeployment %s/%s: %s", instance.Namespace, instance.Name, err)
}
klog.V(4).Infof("Classify UnitedDeployment %s/%s by subSet name", instance.Namespace, instance.Name)
nameToSubsets := r.classifySubsetBySubsetName(instance, subSets)
nameToSubset, err := r.deleteDupSubset(instance, nameToSubsets, control)
if err != nil {
r.recorder.Event(instance.DeepCopy(), corev1.EventTypeWarning, fmt.Sprintf("Failed%s", eventTypeDupSubsetsDelete), err.Error())
return nil, fmt.Errorf("fail to manage duplicate Subset of UnitedDeployment %s/%s: %s", instance.Namespace, instance.Name, err)
}
return nameToSubset, nil
}
func calcNextPartitions(ud *appsv1alpha1.UnitedDeployment, nextReplicas *map[string]int32) *map[string]int32 {
partitions := map[string]int32{}
for _, subset := range ud.Spec.Topology.Subsets {
var subsetPartition int32
if ud.Spec.UpdateStrategy.Type == appsv1alpha1.ManualUpdateStrategyType && ud.Spec.UpdateStrategy.ManualUpdate != nil && ud.Spec.UpdateStrategy.ManualUpdate.Partitions != nil {
if partition, exist := ud.Spec.UpdateStrategy.ManualUpdate.Partitions[subset.Name]; exist {
subsetPartition = partition
}
}
if subsetReplicas, exist := (*nextReplicas)[subset.Name]; exist && subsetPartition > subsetReplicas {
subsetPartition = subsetReplicas
}
partitions[subset.Name] = subsetPartition
}
return &partitions
}
func (r *ReconcileUnitedDeployment) deleteDupSubset(ud *appsv1alpha1.UnitedDeployment, nameToSubsets map[string][]*Subset, control ControlInterface) (*map[string]*Subset, error) {
nameToSubset := map[string]*Subset{}
for name, subsets := range nameToSubsets {
if len(subsets) > 1 {
for _, subset := range subsets[1:] {
klog.V(0).Infof("Delete duplicated Subset %s/%s for subset name %s", subset.Namespace, subset.Name, name)
if err := control.DeleteSubset(subset); err != nil {
if errors.IsNotFound(err) {
continue
}
return &nameToSubset, err
}
}
}
if len(subsets) > 0 {
nameToSubset[name] = subsets[0]
}
}
return &nameToSubset, nil
}
func (r *ReconcileUnitedDeployment) getSubsetControls(instance *appsv1alpha1.UnitedDeployment) (ControlInterface, subSetType) {
if instance.Spec.Template.StatefulSetTemplate != nil {
return r.subSetControls[statefulSetSubSetType], statefulSetSubSetType
}
if instance.Spec.Template.AdvancedStatefulSetTemplate != nil {
return r.subSetControls[advancedStatefulSetSubSetType], advancedStatefulSetSubSetType
}
if instance.Spec.Template.CloneSetTemplate != nil {
return r.subSetControls[cloneSetSubSetType], cloneSetSubSetType
}
if instance.Spec.Template.DeploymentTemplate != nil {
return r.subSetControls[deploymentSubSetType], deploymentSubSetType
}
// unexpected
return nil, statefulSetSubSetType
}
func (r *ReconcileUnitedDeployment) classifySubsetBySubsetName(ud *appsv1alpha1.UnitedDeployment, subsets []*Subset) map[string][]*Subset {
mapping := map[string][]*Subset{}
for _, ss := range subsets {
subSetName, err := getSubsetNameFrom(ss)
if err != nil {
// filter out Subset without correct Subset name
continue
}
mapping[subSetName] = append(mapping[subSetName], ss)
}
return mapping
}
func (r *ReconcileUnitedDeployment) updateStatus(instance *appsv1alpha1.UnitedDeployment, newStatus, oldStatus *appsv1alpha1.UnitedDeploymentStatus, nameToSubset *map[string]*Subset, nextReplicas, nextPartition *map[string]int32, currentRevision, updatedRevision *appsv1.ControllerRevision, collisionCount int32, control ControlInterface) (reconcile.Result, error) {
newStatus = r.calculateStatus(newStatus, nameToSubset, nextReplicas, nextPartition, currentRevision, updatedRevision, collisionCount, control)
_, err := r.updateUnitedDeployment(instance, oldStatus, newStatus)
return reconcile.Result{}, err
}
func (r *ReconcileUnitedDeployment) calculateStatus(newStatus *appsv1alpha1.UnitedDeploymentStatus, nameToSubset *map[string]*Subset, nextReplicas, nextPartition *map[string]int32, currentRevision, updatedRevision *appsv1.ControllerRevision, collisionCount int32, control ControlInterface) *appsv1alpha1.UnitedDeploymentStatus {
expectedRevision := currentRevision.Name
if updatedRevision != nil {
expectedRevision = updatedRevision.Name
}
newStatus.Replicas = 0
newStatus.ReadyReplicas = 0
newStatus.UpdatedReplicas = 0
newStatus.UpdatedReadyReplicas = 0
// sync from status
for _, subset := range *nameToSubset {
subsetReplicas, subsetReadyReplicas, subsetUpdatedReplicas, subsetUpdatedReadyReplicas := replicasStatusFn(subset)
newStatus.Replicas += subsetReplicas
newStatus.ReadyReplicas += subsetReadyReplicas
newStatus.UpdatedReplicas += subsetUpdatedReplicas
newStatus.UpdatedReadyReplicas += subsetUpdatedReadyReplicas
}
newStatus.SubsetReplicas = *nextReplicas
if newStatus.CurrentRevision == "" {
// init with current revision
newStatus.CurrentRevision = currentRevision.Name
}
if newStatus.UpdateStatus == nil {
newStatus.UpdateStatus = &appsv1alpha1.UpdateStatus{}
}
newStatus.UpdateStatus.UpdatedRevision = expectedRevision
newStatus.UpdateStatus.CurrentPartitions = *nextPartition
if newStatus.UpdateStatus.UpdatedRevision != newStatus.CurrentRevision && newStatus.UpdatedReadyReplicas >= newStatus.Replicas {
newStatus.CurrentRevision = newStatus.UpdateStatus.UpdatedRevision
}
var subsetFailure *string
for _, subset := range *nameToSubset {
failureMessage := control.GetSubsetFailure(subset)
if failureMessage != nil {
subsetFailure = failureMessage
break
}
}
if subsetFailure == nil {
RemoveUnitedDeploymentCondition(newStatus, appsv1alpha1.SubsetFailure)
} else {
SetUnitedDeploymentCondition(newStatus, NewUnitedDeploymentCondition(appsv1alpha1.SubsetFailure, corev1.ConditionTrue, "Error", *subsetFailure))
}
return newStatus
}
var replicasStatusFn = replicasStatus
func replicasStatus(subset *Subset) (replicas, readyReplicas, updatedReplicas, updatedReadyReplicas int32) {
replicas = subset.Status.Replicas
readyReplicas = subset.Status.ReadyReplicas
updatedReplicas = subset.Status.UpdatedReplicas
updatedReadyReplicas = subset.Status.UpdatedReadyReplicas
return
}
func (r *ReconcileUnitedDeployment) updateUnitedDeployment(ud *appsv1alpha1.UnitedDeployment, oldStatus, newStatus *appsv1alpha1.UnitedDeploymentStatus) (*appsv1alpha1.UnitedDeployment, error) {
if oldStatus.Replicas == newStatus.Replicas &&
oldStatus.ReadyReplicas == newStatus.ReadyReplicas &&
oldStatus.UpdatedReplicas == newStatus.UpdatedReplicas &&
oldStatus.UpdatedReadyReplicas == newStatus.UpdatedReadyReplicas &&
oldStatus.CurrentRevision == newStatus.CurrentRevision &&
oldStatus.CollisionCount == newStatus.CollisionCount &&
ud.Generation == newStatus.ObservedGeneration &&
reflect.DeepEqual(oldStatus.SubsetReplicas, newStatus.SubsetReplicas) &&
reflect.DeepEqual(oldStatus.UpdateStatus, newStatus.UpdateStatus) &&
reflect.DeepEqual(oldStatus.Conditions, newStatus.Conditions) {
return ud, nil
}
newStatus.ObservedGeneration = ud.Generation
var getErr, updateErr error
for i, obj := 0, ud; ; i++ {
klog.V(4).Infof(fmt.Sprintf("The %d th time updating status for %v: %s/%s, ", i, obj.Kind, obj.Namespace, obj.Name) +
fmt.Sprintf("replicas %d->%d (need %d), ", obj.Status.Replicas, newStatus.Replicas, obj.Spec.Replicas) +
fmt.Sprintf("readyReplicas %d->%d (need %d), ", obj.Status.ReadyReplicas, newStatus.ReadyReplicas, obj.Spec.Replicas) +
fmt.Sprintf("updatedReplicas %d->%d, ", obj.Status.UpdatedReplicas, newStatus.UpdatedReplicas) +
fmt.Sprintf("updatedReadyReplicas %d->%d, ", obj.Status.UpdatedReadyReplicas, newStatus.UpdatedReadyReplicas) +
fmt.Sprintf("sequence No: %v->%v", obj.Status.ObservedGeneration, newStatus.ObservedGeneration))
obj.Status = *newStatus
updateErr = r.Client.Status().Update(context.TODO(), obj)
if updateErr == nil {
return obj, nil
}
if i >= updateRetries {
break
}
tmpObj := &appsv1alpha1.UnitedDeployment{}
if getErr = r.Client.Get(context.TODO(), client.ObjectKey{Namespace: obj.Namespace, Name: obj.Name}, tmpObj); getErr != nil {
return nil, getErr
}
obj = tmpObj
}
klog.Errorf("fail to update UnitedDeployment %s/%s status: %s", ud.Namespace, ud.Name, updateErr)
return nil, updateErr
}