forked from openshift/origin
-
Notifications
You must be signed in to change notification settings - Fork 1
/
factory.go
225 lines (188 loc) · 6.07 KB
/
factory.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
package deployment
import (
"fmt"
"time"
"github.com/golang/glog"
"k8s.io/api/core/v1"
"k8s.io/apimachinery/pkg/api/errors"
"k8s.io/apimachinery/pkg/runtime"
utilruntime "k8s.io/apimachinery/pkg/util/runtime"
"k8s.io/apimachinery/pkg/util/wait"
kcoreinformers "k8s.io/client-go/informers/core/v1"
kclientset "k8s.io/client-go/kubernetes"
kv1core "k8s.io/client-go/kubernetes/typed/core/v1"
"k8s.io/client-go/tools/cache"
"k8s.io/client-go/tools/record"
"k8s.io/client-go/util/workqueue"
"k8s.io/kubernetes/pkg/api/legacyscheme"
kapi "k8s.io/kubernetes/pkg/apis/core"
kcontroller "k8s.io/kubernetes/pkg/controller"
appsutil "github.com/openshift/origin/pkg/apps/util"
)
// NewDeployerController creates a new DeploymentController.
func NewDeployerController(
rcInformer kcoreinformers.ReplicationControllerInformer,
podInformer kcoreinformers.PodInformer,
kubeClientset kclientset.Interface,
sa,
image string,
env []kapi.EnvVar,
codec runtime.Codec,
) *DeploymentController {
eventBroadcaster := record.NewBroadcaster()
eventBroadcaster.StartLogging(glog.Infof)
eventBroadcaster.StartRecordingToSink(&kv1core.EventSinkImpl{Interface: kv1core.New(kubeClientset.CoreV1().RESTClient()).Events("")})
recorder := eventBroadcaster.NewRecorder(legacyscheme.Scheme, v1.EventSource{Component: "deployer-controller"})
c := &DeploymentController{
rn: kubeClientset.Core(),
pn: kubeClientset.Core(),
queue: workqueue.NewRateLimitingQueue(workqueue.DefaultControllerRateLimiter()),
rcLister: rcInformer.Lister(),
rcListerSynced: rcInformer.Informer().HasSynced,
podLister: podInformer.Lister(),
podListerSynced: podInformer.Informer().HasSynced,
serviceAccount: sa,
deployerImage: image,
environment: appsutil.CopyApiEnvVarToV1EnvVar(env),
recorder: recorder,
codec: codec,
}
rcInformer.Informer().AddEventHandler(cache.ResourceEventHandlerFuncs{
AddFunc: c.addReplicationController,
UpdateFunc: c.updateReplicationController,
})
podInformer.Informer().AddEventHandler(cache.ResourceEventHandlerFuncs{
UpdateFunc: c.updatePod,
DeleteFunc: c.deletePod,
})
return c
}
// Run begins watching and syncing.
func (c *DeploymentController) Run(workers int, stopCh <-chan struct{}) {
defer utilruntime.HandleCrash()
defer c.queue.ShutDown()
glog.Infof("Starting deployer controller")
// Wait for the dc store to sync before starting any work in this controller.
if !cache.WaitForCacheSync(stopCh, c.rcListerSynced, c.podListerSynced) {
return
}
glog.Infof("Deployer controller caches are synced. Starting workers.")
for i := 0; i < workers; i++ {
go wait.Until(c.worker, time.Second, stopCh)
}
<-stopCh
glog.Infof("Shutting down deployer controller")
}
func (c *DeploymentController) addReplicationController(obj interface{}) {
rc := obj.(*v1.ReplicationController)
// Filter out all unrelated replication controllers.
if !appsutil.IsOwnedByConfig(rc) {
return
}
c.enqueueReplicationController(rc)
}
func (c *DeploymentController) updateReplicationController(old, cur interface{}) {
// A periodic relist will send update events for all known controllers.
curRC := cur.(*v1.ReplicationController)
oldRC := old.(*v1.ReplicationController)
if curRC.ResourceVersion == oldRC.ResourceVersion {
return
}
// Filter out all unrelated replication controllers.
if !appsutil.IsOwnedByConfig(curRC) {
return
}
c.enqueueReplicationController(curRC)
}
func (c *DeploymentController) updatePod(old, cur interface{}) {
// A periodic relist will send update events for all known pods.
curPod := cur.(*v1.Pod)
oldPod := old.(*v1.Pod)
if curPod.ResourceVersion == oldPod.ResourceVersion {
return
}
if rc, err := c.rcForDeployerPod(curPod); err == nil && rc != nil {
c.enqueueReplicationController(rc)
}
}
func (c *DeploymentController) deletePod(obj interface{}) {
pod, ok := obj.(*v1.Pod)
if !ok {
tombstone, ok := obj.(cache.DeletedFinalStateUnknown)
if !ok {
utilruntime.HandleError(fmt.Errorf("Couldn't get object from tombstone: %+v", obj))
return
}
pod, ok = tombstone.Obj.(*v1.Pod)
if !ok {
utilruntime.HandleError(fmt.Errorf("Tombstone contained object that is not a pod: %+v", obj))
return
}
}
if rc, err := c.rcForDeployerPod(pod); err == nil && rc != nil {
c.enqueueReplicationController(rc)
}
}
func (c *DeploymentController) enqueueReplicationController(rc *v1.ReplicationController) {
key, err := kcontroller.KeyFunc(rc)
if err != nil {
utilruntime.HandleError(fmt.Errorf("Couldn't get key for object %#v: %v", rc, err))
return
}
c.queue.Add(key)
}
func (c *DeploymentController) rcForDeployerPod(pod *v1.Pod) (*v1.ReplicationController, error) {
rcName := appsutil.DeploymentNameFor(pod)
if len(rcName) == 0 {
// Not a deployer pod, so don't bother with it.
return nil, nil
}
key := pod.Namespace + "/" + rcName
return c.getByKey(key)
}
func (c *DeploymentController) worker() {
for {
if quit := c.work(); quit {
return
}
}
}
func (c *DeploymentController) work() bool {
key, quit := c.queue.Get()
if quit {
return true
}
defer c.queue.Done(key)
rc, err := c.getByKey(key.(string))
if err != nil {
utilruntime.HandleError(err)
}
if rc == nil {
return false
}
// Resist missing deployer pods from the cache in case of a pending deployment.
// Give some room for a possible rc update failure in case we decided to mark it
// failed.
willBeDropped := c.queue.NumRequeues(key) >= maxRetryCount-2
err = c.handle(rc, willBeDropped)
c.handleErr(err, key, rc)
return false
}
func (c *DeploymentController) getByKey(key string) (*v1.ReplicationController, error) {
namespace, name, err := cache.SplitMetaNamespaceKey(key)
if err != nil {
return nil, err
}
rc, err := c.rcLister.ReplicationControllers(namespace).Get(name)
if errors.IsNotFound(err) {
// TODO tnozicka: this is not normal and should be refactored
glog.V(4).Infof("Replication controller %q has been deleted", key)
return nil, nil
}
if err != nil {
glog.Infof("Unable to retrieve replication controller %q from store: %v", key, err)
c.queue.AddRateLimited(key)
return nil, err
}
return rc, nil
}