/
nodecadaemon.go
212 lines (183 loc) · 7.15 KB
/
nodecadaemon.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
package operator
import (
"context"
"fmt"
"time"
appsv1 "k8s.io/api/apps/v1"
"k8s.io/apimachinery/pkg/api/errors"
utilerrors "k8s.io/apimachinery/pkg/util/errors"
utilruntime "k8s.io/apimachinery/pkg/util/runtime"
"k8s.io/apimachinery/pkg/util/wait"
appsv1informers "k8s.io/client-go/informers/apps/v1"
corev1informers "k8s.io/client-go/informers/core/v1"
appsv1client "k8s.io/client-go/kubernetes/typed/apps/v1"
appsv1listers "k8s.io/client-go/listers/apps/v1"
corev1listers "k8s.io/client-go/listers/core/v1"
"k8s.io/client-go/tools/cache"
"k8s.io/client-go/util/workqueue"
"k8s.io/klog/v2"
operatorv1 "github.com/openshift/api/operator/v1"
"github.com/openshift/library-go/pkg/operator/events"
"github.com/openshift/library-go/pkg/operator/v1helpers"
"github.com/openshift/cluster-image-registry-operator/pkg/defaults"
"github.com/openshift/cluster-image-registry-operator/pkg/resource"
)
type NodeCADaemonController struct {
eventRecorder events.Recorder
appsClient appsv1client.AppsV1Interface
operatorClient v1helpers.OperatorClient
daemonSetLister appsv1listers.DaemonSetNamespaceLister
serviceLister corev1listers.ServiceNamespaceLister
cachesToSync []cache.InformerSynced
queue workqueue.RateLimitingInterface
}
func NewNodeCADaemonController(
eventRecorder events.Recorder,
appsClient appsv1client.AppsV1Interface,
operatorClient v1helpers.OperatorClient,
daemonSetInformer appsv1informers.DaemonSetInformer,
serviceInformer corev1informers.ServiceInformer,
) (*NodeCADaemonController, error) {
c := &NodeCADaemonController{
eventRecorder: eventRecorder,
appsClient: appsClient,
operatorClient: operatorClient,
daemonSetLister: daemonSetInformer.Lister().DaemonSets(defaults.ImageRegistryOperatorNamespace),
serviceLister: serviceInformer.Lister().Services(defaults.ImageRegistryOperatorNamespace),
queue: workqueue.NewNamedRateLimitingQueue(workqueue.DefaultControllerRateLimiter(), "NodeCADaemonController"),
}
if _, err := daemonSetInformer.Informer().AddEventHandler(c.eventHandler()); err != nil {
return nil, err
}
c.cachesToSync = append(c.cachesToSync, daemonSetInformer.Informer().HasSynced)
if _, err := serviceInformer.Informer().AddEventHandler(c.eventHandler()); err != nil {
return nil, err
}
c.cachesToSync = append(c.cachesToSync, serviceInformer.Informer().HasSynced)
return c, nil
}
func (c *NodeCADaemonController) eventHandler() cache.ResourceEventHandler {
const workQueueKey = "instance"
return cache.ResourceEventHandlerFuncs{
AddFunc: func(obj interface{}) { c.queue.Add(workQueueKey) },
UpdateFunc: func(old, new interface{}) { c.queue.Add(workQueueKey) },
DeleteFunc: func(obj interface{}) { c.queue.Add(workQueueKey) },
}
}
func (c *NodeCADaemonController) runWorker() {
for c.processNextWorkItem() {
}
}
func (c *NodeCADaemonController) processNextWorkItem() bool {
obj, shutdown := c.queue.Get()
if shutdown {
return false
}
defer c.queue.Done(obj)
klog.V(4).Infof("get event from workqueue: %s", obj)
// the workqueueKey we reference here is different than the one we use in eventHandler
// use that to identify we are processing an item that was added back to the queue
// can remove if not useful but curious why this didn't seem to be working for the
// caches not synced error
if obj == workqueueKey {
klog.V(2).Infof("NodeCADaemonController processing requeued item %s", obj)
}
if err := c.sync(); err != nil {
c.queue.AddRateLimited(workqueueKey)
klog.Errorf("NodeCADaemonController: unable to sync: %s, requeuing", err)
} else {
c.queue.Forget(obj)
klog.V(4).Infof("NodeCADaemonController: event from workqueue successfully processed")
}
return true
}
func (c *NodeCADaemonController) sync() error {
ctx := context.TODO()
gen := resource.NewGeneratorNodeCADaemonSet(c.eventRecorder, c.daemonSetLister, c.serviceLister, c.appsClient, c.operatorClient)
availableCondition := operatorv1.OperatorCondition{
Type: "NodeCADaemonAvailable",
Status: operatorv1.ConditionUnknown,
}
progressingCondition := operatorv1.OperatorCondition{
Type: "NodeCADaemonProgressing",
Status: operatorv1.ConditionUnknown,
}
dsObj, err := gen.Get()
if errors.IsNotFound(err) {
availableCondition.Status = operatorv1.ConditionFalse
availableCondition.Reason = "NotFound"
availableCondition.Message = "The daemon set node-ca does not exist"
progressingCondition.Status = operatorv1.ConditionTrue
progressingCondition.Reason = "NotFound"
progressingCondition.Message = "The daemon set node-ca does not exist"
} else if err != nil {
availableCondition.Reason = "Unknown"
availableCondition.Message = fmt.Sprintf("Unable to check daemon set availability: %s", err)
progressingCondition.Reason = "Unknown"
progressingCondition.Message = fmt.Sprintf("Unable to check daemon set progress: %s", err)
} else {
ds := dsObj.(*appsv1.DaemonSet)
if ds.Status.NumberAvailable > 0 {
availableCondition.Status = operatorv1.ConditionTrue
availableCondition.Reason = "AsExpected"
availableCondition.Message = "The daemon set node-ca has available replicas"
} else {
availableCondition.Status = operatorv1.ConditionFalse
availableCondition.Reason = "NoAvailableReplicas"
availableCondition.Message = "The daemon set node-ca does not have available replicas"
}
if ds.Generation != ds.Status.ObservedGeneration {
progressingCondition.Status = operatorv1.ConditionTrue
progressingCondition.Reason = "Progressing"
progressingCondition.Message = "The daemon set node-ca is updating node pods"
} else if ds.Status.NumberUnavailable > 0 {
progressingCondition.Status = operatorv1.ConditionTrue
progressingCondition.Reason = "Unavailable"
progressingCondition.Message = "The daemon set node-ca is deploying node pods"
} else {
progressingCondition.Status = operatorv1.ConditionFalse
progressingCondition.Reason = "AsExpected"
progressingCondition.Message = "The daemon set node-ca is deployed"
}
}
err = resource.ApplyMutator(gen)
if err != nil {
_, _, updateError := v1helpers.UpdateStatus(
ctx,
c.operatorClient,
v1helpers.UpdateConditionFn(availableCondition),
v1helpers.UpdateConditionFn(progressingCondition),
v1helpers.UpdateConditionFn(operatorv1.OperatorCondition{
Type: "NodeCADaemonControllerDegraded",
Status: operatorv1.ConditionTrue,
Reason: "Error",
Message: err.Error(),
}),
)
return utilerrors.NewAggregate([]error{err, updateError})
}
_, _, err = v1helpers.UpdateStatus(
ctx,
c.operatorClient,
v1helpers.UpdateConditionFn(availableCondition),
v1helpers.UpdateConditionFn(progressingCondition),
v1helpers.UpdateConditionFn(operatorv1.OperatorCondition{
Type: "NodeCADaemonControllerDegraded",
Status: operatorv1.ConditionFalse,
Reason: "AsExpected",
}),
)
return err
}
func (c *NodeCADaemonController) Run(stopCh <-chan struct{}) {
defer utilruntime.HandleCrash()
defer c.queue.ShutDown()
klog.Infof("Starting NodeCADaemonController")
if !cache.WaitForCacheSync(stopCh, c.cachesToSync...) {
return
}
go wait.Until(c.runWorker, time.Second, stopCh)
klog.Infof("Started NodeCADaemonController")
<-stopCh
klog.Infof("Shutting down NodeCADaemonController")
}