forked from cert-manager/cert-manager
-
Notifications
You must be signed in to change notification settings - Fork 0
/
controller.go
252 lines (221 loc) · 8.26 KB
/
controller.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
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
package certificates
import (
"context"
"fmt"
"sync"
"time"
"github.com/golang/glog"
corev1 "k8s.io/api/core/v1"
extv1beta1 "k8s.io/api/extensions/v1beta1"
k8sErrors "k8s.io/apimachinery/pkg/api/errors"
"k8s.io/apimachinery/pkg/util/runtime"
"k8s.io/apimachinery/pkg/util/wait"
"k8s.io/client-go/kubernetes"
corelisters "k8s.io/client-go/listers/core/v1"
extlisters "k8s.io/client-go/listers/extensions/v1beta1"
"k8s.io/client-go/tools/cache"
"k8s.io/client-go/tools/record"
"k8s.io/client-go/util/workqueue"
clientset "github.com/jetstack/cert-manager/pkg/client/clientset/versioned"
cminformers "github.com/jetstack/cert-manager/pkg/client/informers/externalversions/certmanager/v1alpha1"
cmlisters "github.com/jetstack/cert-manager/pkg/client/listers/certmanager/v1alpha1"
controllerpkg "github.com/jetstack/cert-manager/pkg/controller"
"github.com/jetstack/cert-manager/pkg/issuer"
"github.com/jetstack/cert-manager/pkg/scheduler"
"github.com/jetstack/cert-manager/pkg/util"
coreinformers "github.com/jetstack/cert-manager/third_party/k8s.io/client-go/informers/core/v1"
extinformers "github.com/jetstack/cert-manager/third_party/k8s.io/client-go/informers/extensions/v1beta1"
)
type Controller struct {
client kubernetes.Interface
cmClient clientset.Interface
issuerFactory issuer.Factory
recorder record.EventRecorder
// To allow injection for testing.
syncHandler func(ctx context.Context, key string) error
issuerLister cmlisters.IssuerLister
clusterIssuerLister cmlisters.ClusterIssuerLister
certificateLister cmlisters.CertificateLister
secretLister corelisters.SecretLister
ingressLister extlisters.IngressLister
queue workqueue.RateLimitingInterface
scheduledWorkQueue scheduler.ScheduledWorkQueue
workerWg sync.WaitGroup
syncedFuncs []cache.InformerSynced
}
// New returns a new Certificates controller. It sets up the informer handler
// functions for all the types it watches.
func New(
certificatesInformer cminformers.CertificateInformer,
issuersInformer cminformers.IssuerInformer,
clusterIssuersInformer cminformers.ClusterIssuerInformer,
secretsInformer coreinformers.SecretInformer,
ingressInformer extinformers.IngressInformer,
client kubernetes.Interface,
cmClient clientset.Interface,
issuerFactory issuer.Factory,
recorder record.EventRecorder,
) *Controller {
ctrl := &Controller{client: client, cmClient: cmClient, issuerFactory: issuerFactory, recorder: recorder}
ctrl.syncHandler = ctrl.processNextWorkItem
ctrl.queue = workqueue.NewNamedRateLimitingQueue(workqueue.NewItemExponentialFailureRateLimiter(time.Second*5, time.Minute*5), "certificates")
// Create a scheduled work queue that calls the ctrl.queue.Add method for
// each object in the queue. This is used to schedule re-checks of
// Certificate resources when they get near to expiry
ctrl.scheduledWorkQueue = scheduler.NewScheduledWorkQueue(ctrl.queue.AddRateLimited)
certificatesInformer.Informer().AddEventHandler(&controllerpkg.QueuingEventHandler{Queue: ctrl.queue})
ctrl.certificateLister = certificatesInformer.Lister()
ctrl.syncedFuncs = append(ctrl.syncedFuncs, certificatesInformer.Informer().HasSynced)
ctrl.issuerLister = issuersInformer.Lister()
ctrl.syncedFuncs = append(ctrl.syncedFuncs, issuersInformer.Informer().HasSynced)
// clusterIssuersInformer may be nil if cert-manager is scoped to a single
// namespace
if clusterIssuersInformer != nil {
ctrl.clusterIssuerLister = clusterIssuersInformer.Lister()
ctrl.syncedFuncs = append(ctrl.syncedFuncs, clusterIssuersInformer.Informer().HasSynced)
}
secretsInformer.Informer().AddEventHandler(&controllerpkg.BlockingEventHandler{WorkFunc: ctrl.secretDeleted})
ctrl.secretLister = secretsInformer.Lister()
ctrl.syncedFuncs = append(ctrl.syncedFuncs, secretsInformer.Informer().HasSynced)
ingressInformer.Informer().AddEventHandler(&controllerpkg.BlockingEventHandler{WorkFunc: ctrl.ingressDeleted})
ctrl.ingressLister = ingressInformer.Lister()
ctrl.syncedFuncs = append(ctrl.syncedFuncs, ingressInformer.Informer().HasSynced)
return ctrl
}
// TODO: replace with generic handleObjet function (like Navigator)
func (c *Controller) secretDeleted(obj interface{}) {
var secret *corev1.Secret
var ok bool
secret, ok = obj.(*corev1.Secret)
if !ok {
runtime.HandleError(fmt.Errorf("Object is not a Secret object %#v", obj))
return
}
crts, err := c.certificatesForSecret(secret)
if err != nil {
runtime.HandleError(fmt.Errorf("Error looking up Certificates observing Secret: %s/%s", secret.Namespace, secret.Name))
return
}
for _, crt := range crts {
key, err := keyFunc(crt)
if err != nil {
runtime.HandleError(err)
continue
}
c.queue.AddRateLimited(key)
}
}
func (c *Controller) ingressDeleted(obj interface{}) {
ingress, ok := obj.(*extv1beta1.Ingress)
if !ok {
runtime.HandleError(fmt.Errorf("Object is not an Ingress object %#v", obj))
return
}
crts, err := c.certificatesForIngress(ingress)
if err != nil {
runtime.HandleError(fmt.Errorf("Error looking up certificates observing Ingress: %s/%s", ingress.Namespace, ingress.Name))
return
}
for _, crt := range crts {
key, err := keyFunc(crt)
if err != nil {
runtime.HandleError(err)
continue
}
c.queue.AddRateLimited(key)
}
}
func (c *Controller) Run(workers int, stopCh <-chan struct{}) error {
glog.V(4).Infof("Starting %s control loop", ControllerName)
// wait for all the informer caches we depend to sync
if !cache.WaitForCacheSync(stopCh, c.syncedFuncs...) {
return fmt.Errorf("error waiting for informer caches to sync")
}
glog.V(4).Infof("Synced all caches for %s control loop", ControllerName)
for i := 0; i < workers; i++ {
c.workerWg.Add(1)
// TODO (@munnerz): make time.Second duration configurable
go wait.Until(func() { c.worker(stopCh) }, time.Second, stopCh)
}
<-stopCh
glog.V(4).Infof("Shutting down queue as workqueue signaled shutdown")
c.queue.ShutDown()
glog.V(4).Infof("Waiting for workers to exit...")
c.workerWg.Wait()
glog.V(4).Infof("Workers exited.")
return nil
}
func (c *Controller) worker(stopCh <-chan struct{}) {
defer c.workerWg.Done()
glog.V(4).Infof("Starting %q worker", ControllerName)
for {
obj, shutdown := c.queue.Get()
if shutdown {
break
}
var key string
err := func(obj interface{}) error {
defer c.queue.Done(obj)
var ok bool
if key, ok = obj.(string); !ok {
return nil
}
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
ctx = util.ContextWithStopCh(ctx, stopCh)
glog.Infof("%s controller: syncing item '%s'", ControllerName, key)
if err := c.syncHandler(ctx, key); err != nil {
return err
}
c.queue.Forget(obj)
return nil
}(obj)
if err != nil {
glog.Errorf("%s controller: Re-queuing item %q due to error processing: %s", ControllerName, key, err.Error())
c.queue.AddRateLimited(obj)
continue
}
glog.Infof("%s controller: Finished processing work item %q", ControllerName, key)
}
glog.V(4).Infof("Exiting %q worker loop", ControllerName)
}
func (c *Controller) processNextWorkItem(ctx context.Context, key string) error {
namespace, name, err := cache.SplitMetaNamespaceKey(key)
if err != nil {
runtime.HandleError(fmt.Errorf("invalid resource key: %s", key))
return nil
}
crt, err := c.certificateLister.Certificates(namespace).Get(name)
if err != nil {
if k8sErrors.IsNotFound(err) {
c.scheduledWorkQueue.Forget(key)
runtime.HandleError(fmt.Errorf("certificate '%s' in work queue no longer exists", key))
return nil
}
return err
}
return c.Sync(ctx, crt)
}
var keyFunc = controllerpkg.KeyFunc
const (
ControllerName = "certificates"
)
func init() {
controllerpkg.Register(ControllerName, func(ctx *controllerpkg.Context) controllerpkg.Interface {
var clusterIssuerInformer cminformers.ClusterIssuerInformer
if ctx.Namespace == "" {
clusterIssuerInformer = ctx.SharedInformerFactory.Certmanager().V1alpha1().ClusterIssuers()
}
return New(
ctx.SharedInformerFactory.Certmanager().V1alpha1().Certificates(),
ctx.SharedInformerFactory.Certmanager().V1alpha1().Issuers(),
clusterIssuerInformer,
ctx.KubeSharedInformerFactory.Core().V1().Secrets(),
ctx.KubeSharedInformerFactory.Extensions().V1beta1().Ingresses(),
ctx.Client,
ctx.CMClient,
ctx.IssuerFactory,
ctx.Recorder,
).Run
})
}