/
list.go
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/
list.go
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// Copyright 2017 The Kubernetes 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 replicaset
import (
"log"
"github.com/kubernetes/dashboard/src/app/backend/api"
"github.com/kubernetes/dashboard/src/app/backend/errors"
metricapi "github.com/kubernetes/dashboard/src/app/backend/integration/metric/api"
"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"
apps "k8s.io/api/apps/v1beta2"
"k8s.io/api/core/v1"
client "k8s.io/client-go/kubernetes"
)
// ReplicaSetList contains a list of Replica Sets in the cluster.
type ReplicaSetList struct {
ListMeta api.ListMeta `json:"listMeta"`
CumulativeMetrics []metricapi.Metric `json:"cumulativeMetrics"`
// Basic information about resources status on the list.
Status common.ResourceStatus `json:"status"`
// Unordered list of Replica Sets.
ReplicaSets []ReplicaSet `json:"replicaSets"`
// List of non-critical errors, that occurred during resource retrieval.
Errors []error `json:"errors"`
}
// GetReplicaSetList returns a list of all Replica Sets in the cluster.
func GetReplicaSetList(client client.Interface, nsQuery *common.NamespaceQuery,
dsQuery *dataselect.DataSelectQuery, metricClient metricapi.MetricClient) (*ReplicaSetList, error) {
log.Print("Getting list of all replica sets in the cluster")
channels := &common.ResourceChannels{
ReplicaSetList: common.GetReplicaSetListChannel(client, nsQuery, 1),
PodList: common.GetPodListChannel(client, nsQuery, 1),
EventList: common.GetEventListChannel(client, nsQuery, 1),
}
return GetReplicaSetListFromChannels(channels, dsQuery, metricClient)
}
// GetReplicaSetListFromChannels returns a list of all Replica Sets in the cluster
// reading required resource list once from the channels.
func GetReplicaSetListFromChannels(channels *common.ResourceChannels,
dsQuery *dataselect.DataSelectQuery, metricClient metricapi.MetricClient) (*ReplicaSetList, error) {
replicaSets := <-channels.ReplicaSetList.List
err := <-channels.ReplicaSetList.Error
nonCriticalErrors, criticalError := errors.HandleError(err)
if criticalError != nil {
return nil, criticalError
}
pods := <-channels.PodList.List
err = <-channels.PodList.Error
nonCriticalErrors, criticalError = errors.AppendError(err, nonCriticalErrors)
if criticalError != nil {
return nil, criticalError
}
events := <-channels.EventList.List
err = <-channels.EventList.Error
nonCriticalErrors, criticalError = errors.AppendError(err, nonCriticalErrors)
if criticalError != nil {
return nil, criticalError
}
rsList := ToReplicaSetList(replicaSets.Items, pods.Items, events.Items, nonCriticalErrors, dsQuery, metricClient)
rsList.Status = getStatus(replicaSets, pods.Items, events.Items)
return rsList, nil
}
// ToReplicaSetList creates paginated list of Replica Set model
// objects based on Kubernetes Replica Set objects array and related resources arrays.
func ToReplicaSetList(replicaSets []apps.ReplicaSet, pods []v1.Pod, events []v1.Event, nonCriticalErrors []error,
dsQuery *dataselect.DataSelectQuery, metricClient metricapi.MetricClient) *ReplicaSetList {
replicaSetList := &ReplicaSetList{
ReplicaSets: make([]ReplicaSet, 0),
ListMeta: api.ListMeta{TotalItems: len(replicaSets)},
Errors: nonCriticalErrors,
}
cachedResources := &metricapi.CachedResources{
Pods: pods,
}
rsCells, metricPromises, filteredTotal := dataselect.
GenericDataSelectWithFilterAndMetrics(
ToCells(replicaSets), dsQuery, cachedResources, metricClient)
replicaSets = FromCells(rsCells)
replicaSetList.ListMeta = api.ListMeta{TotalItems: filteredTotal}
for _, replicaSet := range replicaSets {
matchingPods := common.FilterPodsByControllerRef(&replicaSet, pods)
podInfo := common.GetPodInfo(replicaSet.Status.Replicas, replicaSet.Spec.Replicas,
matchingPods)
podInfo.Warnings = event.GetPodsEventWarnings(events, matchingPods)
replicaSetList.ReplicaSets = append(replicaSetList.ReplicaSets,
ToReplicaSet(&replicaSet, &podInfo))
}
cumulativeMetrics, err := metricPromises.GetMetrics()
replicaSetList.CumulativeMetrics = cumulativeMetrics
if err != nil {
replicaSetList.CumulativeMetrics = make([]metricapi.Metric, 0)
}
return replicaSetList
}