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replicasetlist.go
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/
replicasetlist.go
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// Copyright 2015 Google Inc. All Rights Reserved.
//
// 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 replicaset
import (
"log"
"github.com/kubernetes/dashboard/resource/common"
"github.com/kubernetes/dashboard/resource/event"
"k8s.io/kubernetes/pkg/api"
k8serrors "k8s.io/kubernetes/pkg/api/errors"
"k8s.io/kubernetes/pkg/apis/extensions"
client "k8s.io/kubernetes/pkg/client/unversioned"
)
// ReplicationSetList contains a list of Replica Sets in the cluster.
type ReplicaSetList struct {
// Unordered list of Replica Sets.
ReplicaSets []ReplicaSet `json:"replicaSets"`
}
// ReplicaSet is a presentation layer view of Kubernetes Replica Set resource. This means
// it is Replica Set plus additional augumented data we can get from other sources
// (like services that target the same pods).
type ReplicaSet struct {
ObjectMeta common.ObjectMeta `json:"objectMeta"`
TypeMeta common.TypeMeta `json:"typeMeta"`
// Aggregate information about pods belonging to this Replica Set.
Pods common.PodInfo `json:"pods"`
// Container images of the Replica Set.
ContainerImages []string `json:"containerImages"`
}
// GetReplicaSetList returns a list of all Replica Sets in the cluster.
func GetReplicaSetList(client client.Interface, nsQuery *common.NamespaceQuery) (*ReplicaSetList, error) {
log.Printf("Getting list of all replica sets in the cluster")
channels := &common.ResourceChannels{
ReplicaSetList: common.GetReplicaSetListChannel(client.Extensions(), nsQuery, 1),
ServiceList: common.GetServiceListChannel(client, nsQuery, 1),
PodList: common.GetPodListChannel(client, nsQuery, 1),
EventList: common.GetEventListChannel(client, nsQuery, 1),
NodeList: common.GetNodeListChannel(client, nsQuery, 1),
}
return GetReplicaSetListFromChannels(channels)
}
// GetReplicaSetList returns a list of all Replica Sets in the cluster
// reading required resource list once from the channels.
func GetReplicaSetListFromChannels(channels *common.ResourceChannels) (
*ReplicaSetList, error) {
replicaSets := <-channels.ReplicaSetList.List
if err := <-channels.ReplicaSetList.Error; err != nil {
statusErr, ok := err.(*k8serrors.StatusError)
if ok && statusErr.ErrStatus.Reason == "NotFound" {
// NotFound - this means that the server does not support Replica Set objects, which
// is fine.
emptyList := &ReplicaSetList{
ReplicaSets: make([]ReplicaSet, 0),
}
return emptyList, nil
}
return nil, err
}
services := <-channels.ServiceList.List
if err := <-channels.ServiceList.Error; err != nil {
return nil, err
}
pods := <-channels.PodList.List
if err := <-channels.PodList.Error; err != nil {
return nil, err
}
events := <-channels.EventList.List
if err := <-channels.EventList.Error; err != nil {
return nil, err
}
nodes := <-channels.NodeList.List
if err := <-channels.NodeList.Error; err != nil {
return nil, err
}
return ToReplicaSetList(replicaSets.Items, services.Items, pods.Items, events.Items,
nodes.Items), nil
}
func ToReplicaSetList(replicaSets []extensions.ReplicaSet,
services []api.Service, pods []api.Pod, events []api.Event,
nodes []api.Node) *ReplicaSetList {
replicaSetList := &ReplicaSetList{
ReplicaSets: make([]ReplicaSet, 0),
}
for _, replicaSet := range replicaSets {
matchingPods := common.FilterNamespacedPodsBySelector(pods, replicaSet.ObjectMeta.Namespace,
replicaSet.Spec.Selector.MatchLabels)
podInfo := getPodInfo(&replicaSet, matchingPods)
podInfo.Warnings = event.GetPodsEventWarnings(events, matchingPods)
replicaSetList.ReplicaSets = append(replicaSetList.ReplicaSets, ToReplicaSet(&replicaSet, &podInfo))
}
return replicaSetList
}
func ToReplicaSet(replicaSet *extensions.ReplicaSet, podInfo *common.PodInfo) ReplicaSet {
return ReplicaSet{
ObjectMeta: common.NewObjectMeta(replicaSet.ObjectMeta),
TypeMeta: common.NewTypeMeta(common.ResourceKindReplicaSet),
ContainerImages: common.GetContainerImages(&replicaSet.Spec.Template.Spec),
Pods: *podInfo,
}
}