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joblist.go
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/
joblist.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 job
import (
"log"
"github.com/kubernetes/dashboard/src/app/backend/resource/common"
"github.com/kubernetes/dashboard/src/app/backend/resource/event"
heapster "github.com/kubernetes/dashboard/src/app/backend/client"
"k8s.io/kubernetes/pkg/api"
k8serrors "k8s.io/kubernetes/pkg/api/errors"
"k8s.io/kubernetes/pkg/apis/batch"
client "k8s.io/kubernetes/pkg/client/unversioned"
"github.com/kubernetes/dashboard/src/app/backend/resource/dataselect"
"github.com/kubernetes/dashboard/src/app/backend/resource/metric"
)
// JobList contains a list of Jobs in the cluster.
type JobList struct {
ListMeta common.ListMeta `json:"listMeta"`
// Unordered list of Jobs.
Jobs []Job `json:"jobs"`
CumulativeMetrics []metric.Metric `json:"cumulativeMetrics"`
}
// Job is a presentation layer view of Kubernetes Job resource. This means
// it is Job plus additional augumented data we can get from other sources
type Job struct {
ObjectMeta common.ObjectMeta `json:"objectMeta"`
TypeMeta common.TypeMeta `json:"typeMeta"`
// Aggregate information about pods belonging to this Job.
Pods common.PodInfo `json:"pods"`
// Container images of the Job.
ContainerImages []string `json:"containerImages"`
}
// GetJobList returns a list of all Jobs in the cluster.
func GetJobList(client client.Interface, nsQuery *common.NamespaceQuery,
dsQuery *dataselect.DataSelectQuery, heapsterClient *heapster.HeapsterClient) (*JobList, error) {
log.Printf("Getting list of all jobs in the cluster")
channels := &common.ResourceChannels{
JobList: common.GetJobListChannel(client.Extensions(), nsQuery, 1),
PodList: common.GetPodListChannel(client, nsQuery, 1),
EventList: common.GetEventListChannel(client, nsQuery, 1),
}
return GetJobListFromChannels(channels, dsQuery, heapsterClient)
}
// GetJobList returns a list of all Jobs in the cluster
// reading required resource list once from the channels.
func GetJobListFromChannels(channels *common.ResourceChannels, dsQuery *dataselect.DataSelectQuery, heapsterClient *heapster.HeapsterClient) (
*JobList, error) {
jobs := <-channels.JobList.List
if err := <-channels.JobList.Error; err != nil {
statusErr, ok := err.(*k8serrors.StatusError)
if ok && statusErr.ErrStatus.Reason == "NotFound" {
// NotFound - this means that the server does not support Job objects, which
// is fine.
emptyList := &JobList{
Jobs: make([]Job, 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 CreateJobList(jobs.Items, pods.Items, events.Items, dsQuery, heapsterClient), nil
}
// CreateJobList returns a list of all Job model objects in the cluster, based on all
// Kubernetes Job API objects.
func CreateJobList(jobs []batch.Job, pods []api.Pod, events []api.Event,
dsQuery *dataselect.DataSelectQuery, heapsterClient *heapster.HeapsterClient) *JobList {
jobList := &JobList{
Jobs: make([]Job, 0),
ListMeta: common.ListMeta{TotalItems: len(jobs)},
}
cachedResources := &dataselect.CachedResources{
Pods: pods,
}
replicationControllerCells, metricPromises := dataselect.GenericDataSelectWithMetrics(toCells(jobs), dsQuery, cachedResources, heapsterClient)
jobs = fromCells(replicationControllerCells)
for _, job := range jobs {
var completions int32
matchingPods := common.FilterNamespacedPodsBySelector(pods, job.ObjectMeta.Namespace,
job.Spec.Selector.MatchLabels)
if job.Spec.Completions != nil {
completions = *job.Spec.Completions
}
podInfo := common.GetPodInfo(job.Status.Active, completions, matchingPods)
podInfo.Warnings = event.GetPodsEventWarnings(events, matchingPods)
jobList.Jobs = append(jobList.Jobs, ToJob(&job, &podInfo))
}
cumulativeMetrics, err := metricPromises.GetMetrics()
jobList.CumulativeMetrics = cumulativeMetrics
if err != nil {
jobList.CumulativeMetrics = make([]metric.Metric, 0)
}
return jobList
}
func ToJob(job *batch.Job, podInfo *common.PodInfo) Job {
return Job{
ObjectMeta: common.NewObjectMeta(job.ObjectMeta),
TypeMeta: common.NewTypeMeta(common.ResourceKindJob),
ContainerImages: common.GetContainerImages(&job.Spec.Template.Spec),
Pods: *podInfo,
}
}