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list.go
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list.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 replicationcontroller
import (
"log"
heapster "github.com/kubernetes/dashboard/src/app/backend/client"
"github.com/kubernetes/dashboard/src/app/backend/resource/common"
"github.com/kubernetes/dashboard/src/app/backend/resource/dataselect"
"github.com/kubernetes/dashboard/src/app/backend/resource/event"
"github.com/kubernetes/dashboard/src/app/backend/resource/metric"
client "k8s.io/client-go/kubernetes"
api "k8s.io/client-go/pkg/api/v1"
)
// ReplicationControllerList contains a list of Replication Controllers in the cluster.
type ReplicationControllerList struct {
ListMeta common.ListMeta `json:"listMeta"`
// Unordered list of Replication Controllers.
ReplicationControllers []ReplicationController `json:"replicationControllers"`
CumulativeMetrics []metric.Metric `json:"cumulativeMetrics"`
}
// GetReplicationControllerList returns a list of all Replication Controllers in the cluster.
func GetReplicationControllerList(client *client.Clientset, nsQuery *common.NamespaceQuery,
dsQuery *dataselect.DataSelectQuery, heapsterClient *heapster.HeapsterClient) (*ReplicationControllerList, error) {
log.Print("Getting list of all replication controllers in the cluster")
channels := &common.ResourceChannels{
ReplicationControllerList: common.GetReplicationControllerListChannel(client, nsQuery, 1),
PodList: common.GetPodListChannel(client, nsQuery, 1),
EventList: common.GetEventListChannel(client, nsQuery, 1),
}
return GetReplicationControllerListFromChannels(channels, dsQuery, heapsterClient)
}
// GetReplicationControllerListFromChannels returns a list of all Replication Controllers in the cluster
// reading required resource list once from the channels.
func GetReplicationControllerListFromChannels(channels *common.ResourceChannels,
dsQuery *dataselect.DataSelectQuery, heapsterClient *heapster.HeapsterClient) (*ReplicationControllerList, error) {
rcList := <-channels.ReplicationControllerList.List
if err := <-channels.ReplicationControllerList.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
}
return CreateReplicationControllerList(rcList.Items, dsQuery, podList.Items, eventList.Items, heapsterClient), nil
}
// CreateReplicationControllerList creates paginated list of Replication Controller model
// objects based on Kubernetes Replication Controller objects array and related resources arrays.
func CreateReplicationControllerList(replicationControllers []api.ReplicationController,
dsQuery *dataselect.DataSelectQuery, pods []api.Pod, events []api.Event, heapsterClient *heapster.HeapsterClient) *ReplicationControllerList {
rcList := &ReplicationControllerList{
ReplicationControllers: make([]ReplicationController, 0),
ListMeta: common.ListMeta{TotalItems: len(replicationControllers)},
}
cachedResources := &dataselect.CachedResources{
Pods: pods,
}
rcCells, metricPromises, filteredTotal := dataselect.GenericDataSelectWithFilterAndMetrics(
toCells(replicationControllers), dsQuery, cachedResources, heapsterClient)
replicationControllers = fromCells(rcCells)
rcList.ListMeta = common.ListMeta{TotalItems: filteredTotal}
for _, rc := range replicationControllers {
matchingPods := common.FilterPodsByOwnerReference(rc.Namespace, rc.UID, pods)
podInfo := common.GetPodInfo(rc.Status.Replicas, *rc.Spec.Replicas, matchingPods)
podInfo.Warnings = event.GetPodsEventWarnings(events, matchingPods)
replicationController := ToReplicationController(&rc, &podInfo)
rcList.ReplicationControllers = append(rcList.ReplicationControllers, replicationController)
}
cumulativeMetrics, err := metricPromises.GetMetrics()
rcList.CumulativeMetrics = cumulativeMetrics
if err != nil {
rcList.CumulativeMetrics = make([]metric.Metric, 0)
}
return rcList
}