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podlist.go
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podlist.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 pod
import (
"log"
"github.com/kubernetes/dashboard/client"
"github.com/kubernetes/dashboard/resource/common"
"k8s.io/kubernetes/pkg/api"
k8sClient "k8s.io/kubernetes/pkg/client/unversioned"
)
// ReplicationSetList contains a list of Pods in the cluster.
type PodList struct {
// Unordered list of Pods.
Pods []Pod `json:"pods"`
}
// Pod is a presentation layer view of Kubernetes Pod resource. This means
// it is Pod plus additional augumented data we can get from other sources
// (like services that target it).
type Pod struct {
ObjectMeta common.ObjectMeta `json:"objectMeta"`
TypeMeta common.TypeMeta `json:"typeMeta"`
// Status of the Pod. See Kubernetes API for reference.
PodPhase api.PodPhase `json:"podPhase"`
// IP address of the Pod.
PodIP string `json:"podIP"`
// Count of containers restarts.
RestartCount int32 `json:"restartCount"`
// Pod metrics.
Metrics *PodMetrics `json:"metrics"`
}
// GetPodList returns a list of all Pods in the cluster.
func GetPodList(client k8sClient.Interface, heapsterClient client.HeapsterClient,
nsQuery *common.NamespaceQuery) (*PodList, error) {
log.Printf("Getting list of all pods in the cluster")
channels := &common.ResourceChannels{
PodList: common.GetPodListChannel(client, nsQuery, 1),
}
return GetPodListFromChannels(channels, heapsterClient)
}
// GetPodList returns a list of all Pods in the cluster
// reading required resource list once from the channels.
func GetPodListFromChannels(channels *common.ResourceChannels, heapsterClient client.HeapsterClient) (
*PodList, error) {
pods := <-channels.PodList.List
if err := <-channels.PodList.Error; err != nil {
return nil, err
}
podList := CreatePodList(pods.Items, heapsterClient)
return &podList, nil
}
func CreatePodList(pods []api.Pod, heapsterClient client.HeapsterClient) PodList {
metrics, err := getPodMetrics(pods, heapsterClient)
if err != nil {
log.Printf("Skipping Heapster metrics because of error: %s\n", err)
}
podList := PodList{
Pods: make([]Pod, 0),
}
for _, pod := range pods {
podDetail := ToPod(&pod, metrics)
podList.Pods = append(podList.Pods, podDetail)
}
return podList
}