/
common.go
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/
common.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 replicationcontroller
import (
"github.com/kubernetes/dashboard/src/app/backend/api"
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"
"k8s.io/api/core/v1"
metaV1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/fields"
"k8s.io/apimachinery/pkg/labels"
client "k8s.io/client-go/kubernetes"
)
// ReplicationController (aka. Replication Controller) plus zero or more Kubernetes services that
// target the Replication Controller.
type ReplicationController struct {
ObjectMeta api.ObjectMeta `json:"objectMeta"`
TypeMeta api.TypeMeta `json:"typeMeta"`
// Aggregate information about pods belonging to this Replication Controller.
Pods common.PodInfo `json:"pods"`
// Container images of the Replication Controller.
ContainerImages []string `json:"containerImages"`
// Init Container images of the Replication Controller.
InitContainerImages []string `json:"initContainerImages"`
}
// Transforms simple selector map to labels.Selector object that can be used when querying for
// object.
func toLabelSelector(selector map[string]string) (labels.Selector, error) {
labelSelector, err := metaV1.LabelSelectorAsSelector(&metaV1.LabelSelector{MatchLabels: selector})
if err != nil {
return nil, err
}
return labelSelector, nil
}
// Based on given selector returns list of services that are candidates for deletion.
// Services are matched by replication controllers' label selector. They are deleted if given
// label selector is targeting only 1 replication controller.
func getServicesForDeletion(client client.Interface, labelSelector labels.Selector,
namespace string) ([]v1.Service, error) {
replicationControllers, err := client.CoreV1().ReplicationControllers(namespace).List(metaV1.ListOptions{
LabelSelector: labelSelector.String(),
FieldSelector: fields.Everything().String(),
})
if err != nil {
return nil, err
}
// if label selector is targeting only 1 replication controller
// then we can delete services targeted by this label selector,
// otherwise we can not delete any services so just return empty list
if len(replicationControllers.Items) != 1 {
return []v1.Service{}, nil
}
services, err := client.CoreV1().Services(namespace).List(metaV1.ListOptions{
LabelSelector: labelSelector.String(),
FieldSelector: fields.Everything().String(),
})
if err != nil {
return nil, err
}
return services.Items, nil
}
// ToReplicationController converts replication controller api object to replication controller
// model object.
func ToReplicationController(replicationController *v1.ReplicationController,
podInfo *common.PodInfo) ReplicationController {
return ReplicationController{
ObjectMeta: api.NewObjectMeta(replicationController.ObjectMeta),
TypeMeta: api.NewTypeMeta(api.ResourceKindReplicationController),
Pods: *podInfo,
ContainerImages: common.GetContainerImages(&replicationController.Spec.Template.Spec),
InitContainerImages: common.GetInitContainerImages(&replicationController.Spec.Template.Spec),
}
}
// The code below allows to perform complex data section on []api.ReplicationController
type ReplicationControllerCell v1.ReplicationController
func (self ReplicationControllerCell) GetProperty(name dataselect.PropertyName) dataselect.ComparableValue {
switch name {
case dataselect.NameProperty:
return dataselect.StdComparableString(self.ObjectMeta.Name)
case dataselect.CreationTimestampProperty:
return dataselect.StdComparableTime(self.ObjectMeta.CreationTimestamp.Time)
case dataselect.NamespaceProperty:
return dataselect.StdComparableString(self.ObjectMeta.Namespace)
default:
// if name is not supported then just return a constant dummy value, sort will have no effect.
return nil
}
}
func (self ReplicationControllerCell) GetResourceSelector() *metricapi.ResourceSelector {
return &metricapi.ResourceSelector{
Namespace: self.ObjectMeta.Namespace,
ResourceType: api.ResourceKindReplicationController,
ResourceName: self.ObjectMeta.Name,
UID: self.UID,
}
}
func toCells(std []v1.ReplicationController) []dataselect.DataCell {
cells := make([]dataselect.DataCell, len(std))
for i := range std {
cells[i] = ReplicationControllerCell(std[i])
}
return cells
}
func fromCells(cells []dataselect.DataCell) []v1.ReplicationController {
std := make([]v1.ReplicationController, len(cells))
for i := range std {
std[i] = v1.ReplicationController(cells[i].(ReplicationControllerCell))
}
return std
}
func getStatus(list *v1.ReplicationControllerList, pods []v1.Pod, events []v1.Event) common.ResourceStatus {
info := common.ResourceStatus{}
if list == nil {
return info
}
for _, ss := range list.Items {
matchingPods := common.FilterPodsByControllerRef(&ss, pods)
podInfo := common.GetPodInfo(ss.Status.Replicas, ss.Spec.Replicas, matchingPods)
warnings := event.GetPodsEventWarnings(events, matchingPods)
if len(warnings) > 0 {
info.Failed++
} else if podInfo.Pending > 0 {
info.Pending++
} else {
info.Running++
}
}
return info
}