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deploymentlist.go
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/
deploymentlist.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 deployment
import (
"log"
"github.com/kubernetes/dashboard/src/app/backend/resource/common"
"github.com/kubernetes/dashboard/src/app/backend/resource/event"
"k8s.io/kubernetes/pkg/api"
k8serrors "k8s.io/kubernetes/pkg/api/errors"
"k8s.io/kubernetes/pkg/apis/extensions"
client "k8s.io/kubernetes/pkg/client/unversioned"
)
// ReplicationSetList contains a list of Deployments in the cluster.
type DeploymentList struct {
ListMeta common.ListMeta `json:"listMeta"`
// Unordered list of Deployments.
Deployments []Deployment `json:"deployments"`
}
// Deployment is a presentation layer view of Kubernetes Deployment resource. This means
// it is Deployment plus additional augumented data we can get from other sources
// (like services that target the same pods).
type Deployment struct {
ObjectMeta common.ObjectMeta `json:"objectMeta"`
TypeMeta common.TypeMeta `json:"typeMeta"`
// Aggregate information about pods belonging to this Deployment.
Pods common.PodInfo `json:"pods"`
// Container images of the Deployment.
ContainerImages []string `json:"containerImages"`
}
// GetDeploymentList returns a list of all Deployments in the cluster.
func GetDeploymentList(client client.Interface, nsQuery *common.NamespaceQuery,
pQuery *common.PaginationQuery) (*DeploymentList, error) {
log.Printf("Getting list of all deployments in the cluster")
channels := &common.ResourceChannels{
DeploymentList: common.GetDeploymentListChannel(client.Extensions(), nsQuery, 1),
PodList: common.GetPodListChannel(client, nsQuery, 1),
EventList: common.GetEventListChannel(client, nsQuery, 1),
}
return GetDeploymentListFromChannels(channels, pQuery)
}
// GetDeploymentList returns a list of all Deployments in the cluster
// reading required resource list once from the channels.
func GetDeploymentListFromChannels(channels *common.ResourceChannels,
pQuery *common.PaginationQuery) (*DeploymentList, error) {
deployments := <-channels.DeploymentList.List
if err := <-channels.DeploymentList.Error; err != nil {
statusErr, ok := err.(*k8serrors.StatusError)
if ok && statusErr.ErrStatus.Reason == "NotFound" {
// NotFound - this means that the server does not support Deployment objects, which
// is fine.
emptyList := &DeploymentList{
Deployments: make([]Deployment, 0),
}
return emptyList, nil
}
return nil, err
}
pods := <-channels.PodList.List
if err := <-channels.PodList.Error; err != nil {
return nil, err
}
events := <-channels.EventList.List
if err := <-channels.EventList.Error; err != nil {
return nil, err
}
return CreateDeploymentList(deployments.Items, pods.Items, events.Items, pQuery), nil
}
// CreateDeploymentList returns a list of all Deployment model objects in the cluster, based on all
// Kubernetes Deployment API objects.
func CreateDeploymentList(deployments []extensions.Deployment, pods []api.Pod,
events []api.Event, pQuery *common.PaginationQuery) *DeploymentList {
deploymentList := &DeploymentList{
Deployments: make([]Deployment, 0),
ListMeta: common.ListMeta{TotalItems: len(deployments)},
}
deployments = paginate(deployments, pQuery)
for _, deployment := range deployments {
matchingPods := common.FilterNamespacedPodsBySelector(pods, deployment.ObjectMeta.Namespace,
deployment.Spec.Selector.MatchLabels)
podInfo := common.GetPodInfo(deployment.Status.Replicas, deployment.Spec.Replicas,
matchingPods)
podInfo.Warnings = event.GetPodsEventWarnings(events, matchingPods)
deploymentList.Deployments = append(deploymentList.Deployments,
Deployment{
ObjectMeta: common.NewObjectMeta(deployment.ObjectMeta),
TypeMeta: common.NewTypeMeta(common.ResourceKindDeployment),
ContainerImages: common.GetContainerImages(&deployment.Spec.Template.Spec),
Pods: podInfo,
})
}
return deploymentList
}