1/*
2Copyright 2016 The Kubernetes Authors.
3
4Licensed under the Apache License, Version 2.0 (the "License");
5you may not use this file except in compliance with the License.
6You may obtain a copy of the License at
7
8    http://www.apache.org/licenses/LICENSE-2.0
9
10Unless required by applicable law or agreed to in writing, software
11distributed under the License is distributed on an "AS IS" BASIS,
12WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13See the License for the specific language governing permissions and
14limitations under the License.
15*/
16
17// Package app implements a server that runs a set of active
18// components.  This includes replication controllers, service endpoints and
19// nodes.
20//
21package app
22
23import (
24	"fmt"
25	"net/http"
26	"time"
27
28	"k8s.io/client-go/util/flowcontrol"
29	"k8s.io/kubernetes/pkg/controller/daemon"
30	"k8s.io/kubernetes/pkg/controller/deployment"
31	"k8s.io/kubernetes/pkg/controller/replicaset"
32	"k8s.io/kubernetes/pkg/controller/statefulset"
33)
34
35func startDaemonSetController(ctx ControllerContext) (http.Handler, bool, error) {
36	dsc, err := daemon.NewDaemonSetsController(
37		ctx.InformerFactory.Apps().V1().DaemonSets(),
38		ctx.InformerFactory.Apps().V1().ControllerRevisions(),
39		ctx.InformerFactory.Core().V1().Pods(),
40		ctx.InformerFactory.Core().V1().Nodes(),
41		ctx.ClientBuilder.ClientOrDie("daemon-set-controller"),
42		flowcontrol.NewBackOff(1*time.Second, 15*time.Minute),
43	)
44	if err != nil {
45		return nil, true, fmt.Errorf("error creating DaemonSets controller: %v", err)
46	}
47	go dsc.Run(int(ctx.ComponentConfig.DaemonSetController.ConcurrentDaemonSetSyncs), ctx.Stop)
48	return nil, true, nil
49}
50
51func startStatefulSetController(ctx ControllerContext) (http.Handler, bool, error) {
52	go statefulset.NewStatefulSetController(
53		ctx.InformerFactory.Core().V1().Pods(),
54		ctx.InformerFactory.Apps().V1().StatefulSets(),
55		ctx.InformerFactory.Core().V1().PersistentVolumeClaims(),
56		ctx.InformerFactory.Apps().V1().ControllerRevisions(),
57		ctx.ClientBuilder.ClientOrDie("statefulset-controller"),
58	).Run(int(ctx.ComponentConfig.StatefulSetController.ConcurrentStatefulSetSyncs), ctx.Stop)
59	return nil, true, nil
60}
61
62func startReplicaSetController(ctx ControllerContext) (http.Handler, bool, error) {
63	go replicaset.NewReplicaSetController(
64		ctx.InformerFactory.Apps().V1().ReplicaSets(),
65		ctx.InformerFactory.Core().V1().Pods(),
66		ctx.ClientBuilder.ClientOrDie("replicaset-controller"),
67		replicaset.BurstReplicas,
68	).Run(int(ctx.ComponentConfig.ReplicaSetController.ConcurrentRSSyncs), ctx.Stop)
69	return nil, true, nil
70}
71
72func startDeploymentController(ctx ControllerContext) (http.Handler, bool, error) {
73	dc, err := deployment.NewDeploymentController(
74		ctx.InformerFactory.Apps().V1().Deployments(),
75		ctx.InformerFactory.Apps().V1().ReplicaSets(),
76		ctx.InformerFactory.Core().V1().Pods(),
77		ctx.ClientBuilder.ClientOrDie("deployment-controller"),
78	)
79	if err != nil {
80		return nil, true, fmt.Errorf("error creating Deployment controller: %v", err)
81	}
82	go dc.Run(int(ctx.ComponentConfig.DeploymentController.ConcurrentDeploymentSyncs), ctx.Stop)
83	return nil, true, nil
84}
85