-
Notifications
You must be signed in to change notification settings - Fork 377
/
subscriptions.go
266 lines (227 loc) · 8.24 KB
/
subscriptions.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
package bertymessenger
import (
"context"
// nolint:staticcheck // cannot use the new protobuf API while keeping gogoproto
"github.com/golang/protobuf/proto"
ipfscid "github.com/ipfs/go-cid"
"go.uber.org/multierr"
"go.uber.org/zap"
"berty.tech/berty/v2/go/internal/messengerutil"
"berty.tech/berty/v2/go/pkg/errcode"
mt "berty.tech/berty/v2/go/pkg/messengertypes"
weshnet_errcode "berty.tech/weshnet/pkg/errcode"
"berty.tech/weshnet/pkg/lifecycle"
"berty.tech/weshnet/pkg/logutil"
"berty.tech/weshnet/pkg/protocoltypes"
"berty.tech/weshnet/pkg/tyber"
)
func (svc *service) manageSubscriptions() {
logger := svc.logger.Named("sub")
subscribe := func() {
svc.logger.Info("starting group subscription")
svc.subsMutex.Lock()
defer svc.subsMutex.Unlock()
if svc.cancelSubsCtx != nil {
logger.Error("sub to known groups already running")
return
}
ctx, cancel := context.WithCancel(svc.ctx)
svc.cancelSubsCtx = cancel
svc.subsCtx = ctx
var tyberErr error
tyberCtx, _, endSection := tyber.Section(context.TODO(), logger, "Subscribing to known groups")
defer func() { endSection(tyberErr, "") }()
// Subscribe to account group
if err := svc.subscribeToGroup(ctx, tyberCtx, svc.accountGroup); err != nil {
if !errcode.Has(err, errcode.ErrBertyAccountAlreadyOpened) {
logger.Error("unable subscribe to group", zap.String("gpk", messengerutil.B64EncodeBytes(svc.accountGroup)), zap.Error(err))
}
tyberErr = multierr.Append(tyberErr, err)
}
// subscribe to other groups
for groupPK := range svc.groupsToSubTo {
gpkb, err := messengerutil.B64DecodeBytes(groupPK)
if err != nil {
logger.Error("unable subscribe, decode error", zap.String("gpk", groupPK), zap.Error(err))
tyberErr = multierr.Append(tyberErr, err)
continue
}
if err := svc.subscribeToGroup(ctx, tyberCtx, gpkb); err != nil {
if !errcode.Has(err, errcode.ErrBertyAccountAlreadyOpened) {
logger.Error("unable subscribe to group", zap.String("gpk", groupPK), zap.Error(err))
}
tyberErr = multierr.Append(tyberErr, err)
continue
}
svc.logger.Debug("subscribe to group success", zap.String("gpk", groupPK))
}
}
unsubscribe := func() {
logger.Info("closing all group subscriptions")
svc.subsMutex.Lock()
defer svc.subsMutex.Unlock()
if svc.subsCtx == nil {
return
}
// unsubscribe accountGroup
if _, err := svc.protocolClient.DeactivateGroup(svc.subsCtx, &protocoltypes.DeactivateGroup_Request{
GroupPK: svc.accountGroup,
}); err != nil {
if !errcode.Has(err, errcode.ErrBertyAccount) {
logger.Error("unable to deactivate group", zap.String("gpk", messengerutil.B64EncodeBytes(svc.accountGroup)), zap.Error(err))
}
}
// unsubscribe other groups
for groupPK := range svc.groupsToSubTo {
groupPKBytes, err := messengerutil.B64DecodeBytes(groupPK)
if err != nil {
logger.Error("unable to close subscriptions, decode error", zap.String("gpk", groupPK), zap.Error(err))
continue
}
if _, err := svc.protocolClient.DeactivateGroup(svc.subsCtx, &protocoltypes.DeactivateGroup_Request{
GroupPK: groupPKBytes,
}); err != nil {
if !errcode.Has(err, errcode.ErrBertyAccount) {
logger.Error("unable to deactivate group", zap.String("gpk", groupPK), zap.Error(err))
}
continue
}
}
if svc.cancelSubsCtx != nil {
svc.cancelSubsCtx()
}
svc.subsCtx = nil
svc.cancelSubsCtx = nil
}
// start in inactive state, which should trigger the `startSubscription`
// method naturally when switching to active state at application startup
currentState := lifecycle.StateInactive
for {
task, ok := svc.lcmanager.TaskWaitForStateChange(svc.ctx, currentState)
if !ok {
break // leave the loop, context has expired
}
// update current state
currentState = svc.lcmanager.GetCurrentState()
switch currentState {
case lifecycle.StateActive:
subscribe()
case lifecycle.StateInactive:
unsubscribe()
}
task.Done()
}
// if we are in any other state than inactive, close subscription
if currentState != lifecycle.StateInactive {
unsubscribe()
}
}
func (svc *service) subscribeToMetadata(ctx, tyberCtx context.Context, gpkb []byte) error {
tyberCtx, newTrace := tyber.ContextWithTraceID(tyberCtx)
traceName := "Subscribing to metadata on group " + messengerutil.B64EncodeBytes(gpkb)
if newTrace {
svc.logger.Debug(traceName, tyber.FormatTraceLogFields(tyberCtx)...)
defer tyber.LogTraceEnd(tyberCtx, svc.logger, "Successfully subscribed to metadata")
} else {
tyber.LogStep(tyberCtx, svc.logger, traceName)
}
// subscribe
s, err := svc.protocolClient.GroupMetadataList(
ctx,
&protocoltypes.GroupMetadataList_Request{GroupPK: gpkb},
)
if err != nil {
return errcode.ErrEventListMetadata.Wrap(err)
}
go func() {
for {
gme, err := s.Recv()
if err != nil {
svc.logStreamingError("group metadata", err)
return
}
cid, err := ipfscid.Cast(gme.EventContext.ID)
eventHandler := svc.eventHandler
if err != nil {
svc.logger.Error("failed to cast cid for logging", logutil.PrivateBinary("cid-bytes", gme.EventContext.ID))
ctx, _ := tyber.ContextWithTraceID(svc.eventHandler.Ctx())
eventHandler = eventHandler.WithContext(ctx)
} else {
eventHandler = eventHandler.WithContext(tyber.ContextWithConstantTraceID(svc.eventHandler.Ctx(), "msgrcvd-"+cid.String()))
}
svc.handlerMutex.Lock()
if err := eventHandler.HandleMetadataEvent(gme); err != nil {
_ = tyber.LogFatalError(eventHandler.Ctx(), eventHandler.Logger(), "Failed to handle protocol event", err)
} else {
eventHandler.Logger().Debug("Messenger event handler succeeded", tyber.FormatStepLogFields(eventHandler.Ctx(), []tyber.Detail{}, tyber.EndTrace)...)
}
svc.handlerMutex.Unlock()
}
}()
return nil
}
func (svc *service) subscribeToMessages(ctx, tyberCtx context.Context, gpkb []byte) error {
tyberCtx, newTrace := tyber.ContextWithTraceID(tyberCtx)
traceName := "Subscribing to messages on group " + messengerutil.B64EncodeBytes(gpkb)
if newTrace {
svc.logger.Debug(traceName, tyber.FormatTraceLogFields(tyberCtx)...)
defer tyber.LogTraceEnd(tyberCtx, svc.logger, "Successfully subscribed to messages")
} else {
tyber.LogStep(tyberCtx, svc.logger, traceName)
}
ms, err := svc.protocolClient.GroupMessageList(
ctx,
&protocoltypes.GroupMessageList_Request{
GroupPK: gpkb,
SinceNow: true,
},
)
if err != nil {
return errcode.ErrEventListMessage.Wrap(err)
}
go func() {
for {
gme, err := ms.Recv()
if err != nil {
svc.logStreamingError("group message", err)
return
}
var am mt.AppMessage
if err := proto.Unmarshal(gme.GetMessage(), &am); err != nil {
svc.logger.Warn("failed to unmarshal AppMessage", zap.Error(err))
return
}
cid, err := ipfscid.Cast(gme.EventContext.ID)
eventHandler := svc.eventHandler
if err != nil {
svc.logger.Error("failed to cast cid for logging", zap.String("type", am.GetType().String()), logutil.PrivateBinary("cid-bytes", gme.EventContext.ID))
ctx, _ := tyber.ContextWithTraceID(svc.eventHandler.Ctx())
eventHandler = eventHandler.WithContext(ctx)
} else {
eventHandler = eventHandler.WithContext(tyber.ContextWithConstantTraceID(svc.eventHandler.Ctx(), "msgrcvd-"+cid.String()))
}
if err := eventHandler.HandleAppMessage(messengerutil.B64EncodeBytes(gpkb), gme, &am); err != nil {
_ = tyber.LogFatalError(eventHandler.Ctx(), eventHandler.Logger(), "Failed to handle AppMessage", err)
} else {
eventHandler.Logger().Debug("AppMessage handler succeeded", tyber.FormatStepLogFields(eventHandler.Ctx(), []tyber.Detail{}, tyber.EndTrace)...)
}
}
}()
return nil
}
func (svc *service) subscribeToGroup(ctx, tyberCtx context.Context, gpkb []byte) error {
tyberCtx, newTrace := tyber.ContextWithTraceID(tyberCtx)
if newTrace {
svc.logger.Debug("Subscribing to group "+messengerutil.B64EncodeBytes(gpkb), tyber.FormatTraceLogFields(tyberCtx)...)
defer tyber.LogTraceEnd(tyberCtx, svc.logger, "Successfully subscribed to group")
}
if _, err := svc.protocolClient.ActivateGroup(ctx, &protocoltypes.ActivateGroup_Request{
GroupPK: gpkb,
}); err != nil {
return weshnet_errcode.ErrGroupActivate.Wrap(err)
}
if err := svc.subscribeToMetadata(ctx, tyberCtx, gpkb); err != nil {
return err
}
return svc.subscribeToMessages(ctx, tyberCtx, gpkb)
}