forked from kubernetes/dashboard
/
list.go
141 lines (117 loc) · 5.37 KB
/
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 daemonset
import (
"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"
"k8s.io/client-go/kubernetes"
)
// DaemonSetList contains a list of Daemon Sets in the cluster.
type DaemonSetList struct {
ListMeta api.ListMeta `json:"listMeta"`
DaemonSets []DaemonSet `json:"daemonSets"`
CumulativeMetrics []metricapi.Metric `json:"cumulativeMetrics"`
// Basic information about resources status on the list.
Status common.ResourceStatus `json:"status"`
// List of non-critical errors, that occurred during resource retrieval.
Errors []error `json:"errors"`
}
// DaemonSet plus zero or more Kubernetes services that target the Daemon Set.
type DaemonSet struct {
ObjectMeta api.ObjectMeta `json:"objectMeta"`
TypeMeta api.TypeMeta `json:"typeMeta"`
// Aggregate information about pods belonging to this Daemon Set.
Pods common.PodInfo `json:"pods"`
// Container images of the Daemon Set.
ContainerImages []string `json:"containerImages"`
// InitContainer images of the Daemon Set.
InitContainerImages []string `json:"initContainerImages"`
}
// GetDaemonSetList returns a list of all Daemon Set in the cluster.
func GetDaemonSetList(client kubernetes.Interface, nsQuery *common.NamespaceQuery, dsQuery *dataselect.DataSelectQuery,
metricClient metricapi.MetricClient) (*DaemonSetList, error) {
channels := &common.ResourceChannels{
DaemonSetList: common.GetDaemonSetListChannel(client, nsQuery, 1),
ServiceList: common.GetServiceListChannel(client, nsQuery, 1),
PodList: common.GetPodListChannel(client, nsQuery, 1),
EventList: common.GetEventListChannel(client, nsQuery, 1),
}
return GetDaemonSetListFromChannels(channels, dsQuery, metricClient)
}
// GetDaemonSetListFromChannels returns a list of all Daemon Set in the cluster
// reading required resource list once from the channels.
func GetDaemonSetListFromChannels(channels *common.ResourceChannels, dsQuery *dataselect.DataSelectQuery,
metricClient metricapi.MetricClient) (*DaemonSetList, error) {
daemonSets := <-channels.DaemonSetList.List
err := <-channels.DaemonSetList.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
}
dsList := toDaemonSetList(daemonSets.Items, pods.Items, events.Items, nonCriticalErrors, dsQuery, metricClient)
dsList.Status = getStatus(daemonSets, pods.Items, events.Items)
return dsList, nil
}
func toDaemonSetList(daemonSets []apps.DaemonSet, pods []v1.Pod, events []v1.Event, nonCriticalErrors []error,
dsQuery *dataselect.DataSelectQuery, metricClient metricapi.MetricClient) *DaemonSetList {
daemonSetList := &DaemonSetList{
DaemonSets: make([]DaemonSet, 0),
ListMeta: api.ListMeta{TotalItems: len(daemonSets)},
Errors: nonCriticalErrors,
}
cachedResources := &metricapi.CachedResources{
Pods: pods,
}
dsCells, metricPromises, filteredTotal := dataselect.GenericDataSelectWithFilterAndMetrics(ToCells(daemonSets),
dsQuery, cachedResources, metricClient)
daemonSets = FromCells(dsCells)
daemonSetList.ListMeta = api.ListMeta{TotalItems: filteredTotal}
for i, daemonSet := range daemonSets {
matchingPods := common.FilterPodsByControllerRef(&daemonSet, pods)
podInfo := common.GetPodInfo(daemonSet.Status.CurrentNumberScheduled,
&daemonSets[i].Status.DesiredNumberScheduled, matchingPods)
podInfo.Warnings = event.GetPodsEventWarnings(events, matchingPods)
daemonSetList.DaemonSets = append(daemonSetList.DaemonSets, DaemonSet{
ObjectMeta: api.NewObjectMeta(daemonSet.ObjectMeta),
TypeMeta: api.NewTypeMeta(api.ResourceKindDaemonSet),
Pods: podInfo,
ContainerImages: common.GetContainerImages(&daemonSet.Spec.Template.Spec),
InitContainerImages: common.GetInitContainerImages(&daemonSet.Spec.Template.Spec),
})
}
cumulativeMetrics, err := metricPromises.GetMetrics()
daemonSetList.CumulativeMetrics = cumulativeMetrics
if err != nil {
daemonSetList.CumulativeMetrics = make([]metricapi.Metric, 0)
}
return daemonSetList
}