// 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(deployment *extensions.Deployment, rsList []extensions.ReplicaSet, maxOldRevision int64, oldRSs []*extensions.ReplicaSet, createIfNotExisted bool) (*extensions.ReplicaSet, error) {
// Calculate revision number for this new replica set
newRevision := strconv.FormatInt(maxOldRevision+1, 10)
existingNewRS, err := deploymentutil.FindNewReplicaSet(deployment, rsList)
if err != nil {
return nil, err
} else if existingNewRS != nil {
// Set existing new replica set's annotation
if setNewReplicaSetAnnotations(deployment, existingNewRS, newRevision, true) {
return dc.client.Extensions().ReplicaSets(deployment.ObjectMeta.Namespace).Update(existingNewRS)
}
return existingNewRS, nil
}
if !createIfNotExisted {
return nil, nil
}
// new ReplicaSet does not exist, create one.
namespace := deployment.ObjectMeta.Namespace
podTemplateSpecHash := podutil.GetPodTemplateSpecHash(deployment.Spec.Template)
newRSTemplate := deploymentutil.GetNewReplicaSetTemplate(deployment)
// Add podTemplateHash label to selector.
newRSSelector := labelsutil.CloneSelectorAndAddLabel(deployment.Spec.Selector, extensions.DefaultDeploymentUniqueLabelKey, podTemplateSpecHash)
// Create new ReplicaSet
newRS := extensions.ReplicaSet{
ObjectMeta: api.ObjectMeta{
// Make the name deterministic, to ensure idempotence
Name: deployment.Name + "-" + fmt.Sprintf("%d", podTemplateSpecHash),
Namespace: namespace,
},
Spec: extensions.ReplicaSetSpec{
Replicas: 0,
Selector: newRSSelector,
Template: newRSTemplate,
},
}
allRSs := append(oldRSs, &newRS)
newReplicasCount, err := deploymentutil.NewRSNewReplicas(deployment, allRSs, &newRS)
if err != nil {
return nil, err
}
newRS.Spec.Replicas = newReplicasCount
// Set new replica set's annotation
setNewReplicaSetAnnotations(deployment, &newRS, newRevision, false)
createdRS, err := dc.client.Extensions().ReplicaSets(namespace).Create(&newRS)
if err != nil {
dc.enqueueDeployment(deployment)
return nil, fmt.Errorf("error creating replica set %v: %v", deployment.Name, err)
}
if newReplicasCount > 0 {
dc.eventRecorder.Eventf(deployment, api.EventTypeNormal, "ScalingReplicaSet", "Scaled %s replica set %s to %d", "up", createdRS.Name, newReplicasCount)
}
return createdRS, dc.updateDeploymentRevision(deployment, newRevision)
}
// GetDeploymentDetail returns model object of deployment and error, if any.
func GetDeploymentDetail(client client.Interface, namespace string,
name string) (*DeploymentDetail, error) {
log.Printf("Getting details of %s deployment in %s namespace", name, namespace)
deployment, err := client.Extensions().Deployments(namespace).Get(name)
if err != nil {
return nil, err
}
selector, err := unversioned.LabelSelectorAsSelector(deployment.Spec.Selector)
if err != nil {
return nil, err
}
options := api.ListOptions{LabelSelector: selector}
channels := &common.ResourceChannels{
ReplicaSetList: common.GetReplicaSetListChannelWithOptions(client.Extensions(),
common.NewSameNamespaceQuery(namespace), options, 1),
PodList: common.GetPodListChannelWithOptions(client,
common.NewSameNamespaceQuery(namespace), options, 1),
EventList: common.GetEventListChannelWithOptions(client,
common.NewSameNamespaceQuery(namespace), options, 1),
}
rsList := <-channels.ReplicaSetList.List
if err := <-channels.ReplicaSetList.Error; err != nil {
return nil, err
}
podList := <-channels.PodList.List
if err := <-channels.PodList.Error; err != nil {
return nil, err
}
eventList := <-channels.EventList.List
if err := <-channels.EventList.Error; err != nil {
return nil, err
}
oldReplicaSets, _, err := deploymentutil.FindOldReplicaSets(deployment, rsList.Items, podList)
if err != nil {
return nil, err
}
newReplicaSet, err := deploymentutil.FindNewReplicaSet(deployment, rsList.Items)
if err != nil {
return nil, err
}
events, err := GetDeploymentEvents(eventList.Items, namespace, name)
if err != nil {
return nil, err
}
return getDeploymentDetail(deployment, oldReplicaSets, newReplicaSet,
podList.Items, events, eventList.Items), nil
}
// GetDeploymentDetail returns model object of deployment and error, if any.
func GetDeploymentDetail(client client.Interface, heapsterClient heapster.HeapsterClient, namespace string,
deploymentName string) (*DeploymentDetail, error) {
log.Printf("Getting details of %s deployment in %s namespace", deploymentName, namespace)
deployment, err := client.Extensions().Deployments(namespace).Get(deploymentName)
if err != nil {
return nil, err
}
selector, err := unversioned.LabelSelectorAsSelector(deployment.Spec.Selector)
if err != nil {
return nil, err
}
options := api.ListOptions{LabelSelector: selector}
channels := &common.ResourceChannels{
ReplicaSetList: common.GetReplicaSetListChannelWithOptions(client.Extensions(),
common.NewSameNamespaceQuery(namespace), options, 1),
PodList: common.GetPodListChannelWithOptions(client,
common.NewSameNamespaceQuery(namespace), options, 1),
}
rawRs := <-channels.ReplicaSetList.List
if err := <-channels.ReplicaSetList.Error; err != nil {
return nil, err
}
rawPods := <-channels.PodList.List
if err := <-channels.PodList.Error; err != nil {
return nil, err
}
// Pods
podList, err := GetDeploymentPods(client, heapsterClient, dataselect.DefaultDataSelectWithMetrics, namespace, deploymentName)
if err != nil {
return nil, err
}
// Events
eventList, err := GetDeploymentEvents(client, dataselect.DefaultDataSelect, namespace, deploymentName)
if err != nil {
return nil, err
}
// Old Replica Sets
oldReplicaSetList, err := GetDeploymentOldReplicaSets(client, dataselect.DefaultDataSelect, namespace, deploymentName)
if err != nil {
return nil, err
}
// New Replica Set
newRs, err := deploymentutil.FindNewReplicaSet(deployment, rawRs.Items)
if err != nil {
return nil, err
}
var newReplicaSet replicaset.ReplicaSet
if newRs != nil {
newRsPodInfo := common.GetPodInfo(newRs.Status.Replicas, newRs.Spec.Replicas, rawPods.Items)
newReplicaSet = replicaset.ToReplicaSet(newRs, &newRsPodInfo)
}
// Extra Info
var rollingUpdateStrategy *RollingUpdateStrategy
if deployment.Spec.Strategy.RollingUpdate != nil {
rollingUpdateStrategy = &RollingUpdateStrategy{
MaxSurge: deployment.Spec.Strategy.RollingUpdate.MaxSurge.IntValue(),
MaxUnavailable: deployment.Spec.Strategy.RollingUpdate.MaxUnavailable.IntValue(),
}
}
return &DeploymentDetail{
ObjectMeta: common.NewObjectMeta(deployment.ObjectMeta),
TypeMeta: common.NewTypeMeta(common.ResourceKindDeployment),
PodList: *podList,
Selector: deployment.Spec.Selector.MatchLabels,
StatusInfo: GetStatusInfo(&deployment.Status),
Strategy: deployment.Spec.Strategy.Type,
MinReadySeconds: deployment.Spec.MinReadySeconds,
RollingUpdateStrategy: rollingUpdateStrategy,
OldReplicaSetList: *oldReplicaSetList,
NewReplicaSet: newReplicaSet,
RevisionHistoryLimit: deployment.Spec.RevisionHistoryLimit,
EventList: *eventList,
}, nil
}