-
Notifications
You must be signed in to change notification settings - Fork 1.7k
/
channelq.go
360 lines (308 loc) · 11.1 KB
/
channelq.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
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
package channelq
import (
"fmt"
"github.com/kubeedge/kubeedge/cloud/pkg/dynamiccontroller/application"
"strings"
"sync"
"k8s.io/apimachinery/pkg/api/meta"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/client-go/tools/cache"
"k8s.io/client-go/util/workqueue"
"k8s.io/klog/v2"
beehiveContext "github.com/kubeedge/beehive/pkg/core/context"
beehiveModel "github.com/kubeedge/beehive/pkg/core/model"
reliablesyncslisters "github.com/kubeedge/kubeedge/cloud/pkg/client/listers/reliablesyncs/v1alpha1"
"github.com/kubeedge/kubeedge/cloud/pkg/cloudhub/common/model"
"github.com/kubeedge/kubeedge/cloud/pkg/common/modules"
edgeconst "github.com/kubeedge/kubeedge/cloud/pkg/edgecontroller/constants"
edgemessagelayer "github.com/kubeedge/kubeedge/cloud/pkg/edgecontroller/messagelayer"
"github.com/kubeedge/kubeedge/cloud/pkg/synccontroller"
commonconst "github.com/kubeedge/kubeedge/common/constants"
)
// ChannelMessageQueue is the channel implementation of MessageQueue
type ChannelMessageQueue struct {
queuePool sync.Map
storePool sync.Map
listQueuePool sync.Map
listStorePool sync.Map
objectSyncLister reliablesyncslisters.ObjectSyncLister
clusterObjectSyncLister reliablesyncslisters.ClusterObjectSyncLister
}
// NewChannelMessageQueue initializes a new ChannelMessageQueue
func NewChannelMessageQueue(objectSyncLister reliablesyncslisters.ObjectSyncLister, clusterObjectSyncLister reliablesyncslisters.ClusterObjectSyncLister) *ChannelMessageQueue {
return &ChannelMessageQueue{
objectSyncLister: objectSyncLister,
clusterObjectSyncLister: clusterObjectSyncLister,
}
}
// DispatchMessage gets the message from the cloud, extracts the
// node id from it, gets the message associated with the node
// and pushes the message to the queue
func (q *ChannelMessageQueue) DispatchMessage() {
for {
select {
case <-beehiveContext.Done():
klog.Warning("Cloudhub channel eventqueue dispatch message loop stoped")
return
default:
}
msg, err := beehiveContext.Receive(model.SrcCloudHub)
if err != nil {
klog.Info("receive not Message format message")
continue
}
nodeID, err := GetNodeID(&msg)
if nodeID == "" || err != nil {
klog.Warning("node id is not found in the message")
continue
}
if msg.Router.Operation == application.ApplicationResp{
q.addListMessageToQueue(nodeID,&msg)
continue
}
if isListResource(&msg) {
q.addListMessageToQueue(nodeID, &msg)
} else {
q.addMessageToQueue(nodeID, &msg)
}
}
}
func (q *ChannelMessageQueue) addListMessageToQueue(nodeID string, msg *beehiveModel.Message) {
nodeListQueue := q.GetNodeListQueue(nodeID)
nodeListStore := q.GetNodeListStore(nodeID)
messageKey, _ := getListMsgKey(msg)
if err := nodeListStore.Add(msg); err != nil {
klog.Errorf("failed to add msg: %s", err)
return
}
nodeListQueue.Add(messageKey)
}
func (q *ChannelMessageQueue) addMessageToQueue(nodeID string, msg *beehiveModel.Message) {
if msg.GetResourceVersion() == "" && !isDeleteMessage(msg) {
return
}
nodeQueue := q.GetNodeQueue(nodeID)
nodeStore := q.GetNodeStore(nodeID)
messageKey, err := getMsgKey(msg)
if err != nil {
klog.Errorf("fail to get message key for message: %s", msg.Header.ID)
return
}
item, exist, _ := nodeStore.GetByKey(messageKey)
if !isDeleteMessage(msg) {
// If the message doesn't exist in the store, then compare it with
// the version stored in the database
if !exist {
resourceNamespace, _ := edgemessagelayer.GetNamespace(*msg)
resourceUID, err := GetMessageUID(*msg)
if err != nil {
klog.Errorf("fail to get message UID for message: %s", msg.Header.ID)
return
}
objectSync, err := q.objectSyncLister.ObjectSyncs(resourceNamespace).Get(synccontroller.BuildObjectSyncName(nodeID, resourceUID))
if err == nil && objectSync.Status.ObjectResourceVersion != "" && synccontroller.CompareResourceVersion(msg.GetResourceVersion(), objectSync.Status.ObjectResourceVersion) <= 0 {
return
}
}
// Check if message is older than already in store, if it is, discard it directly
if exist {
msgInStore := item.(*beehiveModel.Message)
if isDeleteMessage(msgInStore) || synccontroller.CompareResourceVersion(msg.GetResourceVersion(), msgInStore.GetResourceVersion()) <= 0 {
return
}
}
}
if err := nodeStore.Add(msg); err != nil {
klog.Errorf("fail to add message %v nodeStore, err: %v", msg, err)
return
}
nodeQueue.Add(messageKey)
}
func getMsgKey(obj interface{}) (string, error) {
msg := obj.(*beehiveModel.Message)
if msg.GetGroup() == edgeconst.GroupResource {
resourceType, _ := edgemessagelayer.GetResourceType(*msg)
resourceNamespace, _ := edgemessagelayer.GetNamespace(*msg)
resourceName, _ := edgemessagelayer.GetResourceName(*msg)
return strings.Join([]string{resourceType, resourceNamespace, resourceName}, "/"), nil
}
return "", fmt.Errorf("Failed to get message key")
}
func getListMsgKey(obj interface{}) (string, error) {
msg := obj.(*beehiveModel.Message)
return msg.Header.ID, nil
}
func isListResource(msg *beehiveModel.Message) bool {
msgResource := msg.GetResource()
if strings.Contains(msgResource, beehiveModel.ResourceTypePodlist) ||
strings.Contains(msgResource, commonconst.ResourceTypeServiceList) ||
strings.Contains(msgResource, commonconst.ResourceTypeEndpointsList) ||
strings.Contains(msgResource, "membership") ||
strings.Contains(msgResource, "twin/cloud_updated") {
return true
}
if msg.GetOperation() == beehiveModel.ResponseOperation {
content, ok := msg.Content.(string)
if ok && content == "OK" {
return true
}
}
if msg.GetSource() == modules.EdgeControllerModuleName {
resourceType, _ := edgemessagelayer.GetResourceType(*msg)
if resourceType == beehiveModel.ResourceTypeNode {
return true
}
}
return false
}
func isDeleteMessage(msg *beehiveModel.Message) bool {
if msg.GetOperation() == beehiveModel.DeleteOperation {
return true
}
deletionTimestamp, err := GetMessageDeletionTimestamp(msg)
if err != nil {
klog.Errorf("fail to get message DeletionTimestamp for message: %s", msg.Header.ID)
return false
} else if deletionTimestamp != nil {
return true
}
return false
}
// GetNodeID from "beehive/pkg/core/model".Message.Router.Resource
func GetNodeID(msg *beehiveModel.Message) (string, error) {
resource := msg.Router.Resource
tokens := strings.Split(resource, commonconst.ResourceSep)
numOfTokens := len(tokens)
for i, token := range tokens {
if token == model.ResNode && i+1 < numOfTokens && tokens[i+1] != "" {
return tokens[i+1], nil
}
}
return "", fmt.Errorf("No nodeID in Message.Router.Resource: %s", resource)
}
// Connect allocates the queues and stores for given node
func (q *ChannelMessageQueue) Connect(info *model.HubInfo) {
_, queueExist := q.queuePool.Load(info.NodeID)
_, storeExit := q.storePool.Load(info.NodeID)
_, listQueueExist := q.listQueuePool.Load(info.NodeID)
_, listStoreExit := q.listStorePool.Load(info.NodeID)
if queueExist && storeExit && listQueueExist && listStoreExit {
klog.Infof("Message queue and store for edge node %s are already exist", info.NodeID)
return
}
if !queueExist {
nodeQueue := workqueue.NewNamedRateLimitingQueue(workqueue.DefaultControllerRateLimiter(), info.NodeID)
q.queuePool.Store(info.NodeID, nodeQueue)
}
if !storeExit {
nodeStore := cache.NewStore(getMsgKey)
q.storePool.Store(info.NodeID, nodeStore)
}
if !listQueueExist {
nodeListQueue := workqueue.NewNamedRateLimitingQueue(workqueue.DefaultControllerRateLimiter(), info.NodeID)
q.listQueuePool.Store(info.NodeID, nodeListQueue)
}
if !listStoreExit {
nodeListStore := cache.NewStore(getListMsgKey)
q.listStorePool.Store(info.NodeID, nodeListStore)
}
}
// Close closes queues and stores for given node
func (q *ChannelMessageQueue) Close(info *model.HubInfo) {
_, queueExist := q.queuePool.Load(info.NodeID)
_, storeExist := q.storePool.Load(info.NodeID)
_, listQueueExist := q.listQueuePool.Load(info.NodeID)
_, listStoreExit := q.listStorePool.Load(info.NodeID)
if !queueExist && !storeExist && !listQueueExist && !listStoreExit {
klog.Warningf("rChannel for edge node %s is already removed", info.NodeID)
return
}
if queueExist {
q.queuePool.Delete(info.NodeID)
}
if storeExist {
q.storePool.Delete(info.NodeID)
}
if listQueueExist {
q.listQueuePool.Delete(info.NodeID)
}
if listStoreExit {
q.listStorePool.Delete(info.NodeID)
}
}
// Publish sends message via the channel to Controllers
func (q *ChannelMessageQueue) Publish(msg *beehiveModel.Message) error {
switch msg.Router.Source {
case application.MetaServerSource:
beehiveContext.Send(modules.DynamicControllerModuleName, *msg)
case model.ResTwin:
beehiveContext.SendToGroup(model.SrcDeviceController, *msg)
default:
beehiveContext.SendToGroup(model.SrcEdgeController, *msg)
}
return nil
}
// GetNodeQueue returns the queue for given node
func (q *ChannelMessageQueue) GetNodeQueue(nodeID string) workqueue.RateLimitingInterface {
queue, ok := q.queuePool.Load(nodeID)
if !ok {
klog.Warningf("nodeQueue for edge node %s not found and created now", nodeID)
nodeQueue := workqueue.NewNamedRateLimitingQueue(workqueue.DefaultControllerRateLimiter(), nodeID)
q.queuePool.Store(nodeID, nodeQueue)
return nodeQueue
}
nodeQueue := queue.(workqueue.RateLimitingInterface)
return nodeQueue
}
// GetNodeListQueue returns the listQueue for given node
func (q *ChannelMessageQueue) GetNodeListQueue(nodeID string) workqueue.RateLimitingInterface {
queue, ok := q.listQueuePool.Load(nodeID)
if !ok {
klog.Warningf("nodeListQueue for edge node %s not found and created now", nodeID)
nodeListQueue := workqueue.NewNamedRateLimitingQueue(workqueue.DefaultControllerRateLimiter(), nodeID)
q.listQueuePool.Store(nodeID, nodeListQueue)
return nodeListQueue
}
nodeListQueue := queue.(workqueue.RateLimitingInterface)
return nodeListQueue
}
// GetNodeStore returns the store for given node
func (q *ChannelMessageQueue) GetNodeStore(nodeID string) cache.Store {
store, ok := q.storePool.Load(nodeID)
if !ok {
klog.Warningf("nodeStore for edge node %s not found and created now", nodeID)
nodeStore := cache.NewStore(getMsgKey)
q.storePool.Store(nodeID, nodeStore)
return nodeStore
}
nodeStore := store.(cache.Store)
return nodeStore
}
// GetNodeListStore returns the listStore for given node
func (q *ChannelMessageQueue) GetNodeListStore(nodeID string) cache.Store {
store, ok := q.listStorePool.Load(nodeID)
if !ok {
klog.Warningf("nodeListStore for edge node %s not found and created now", nodeID)
nodeListStore := cache.NewStore(getListMsgKey)
q.listStorePool.Store(nodeID, nodeListStore)
return nodeListStore
}
nodeListStore := store.(cache.Store)
return nodeListStore
}
// GetMessageUID returns the UID of the object in message
func GetMessageUID(msg beehiveModel.Message) (string, error) {
accessor, err := meta.Accessor(msg.Content)
if err != nil {
return "", err
}
return string(accessor.GetUID()), nil
}
// GetMessageDeletionTimestamp returns the deletionTimestamp of the object in message
func GetMessageDeletionTimestamp(msg *beehiveModel.Message) (*metav1.Time, error) {
accessor, err := meta.Accessor(msg.Content)
if err != nil {
return nil, err
}
return accessor.GetDeletionTimestamp(), nil
}