/
fsconn.go
375 lines (323 loc) · 8.46 KB
/
fsconn.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
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
// Copyright 2015 Bobby Powers. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package slackfs
import (
"encoding/json"
"fmt"
"io/ioutil"
"log"
"strings"
"sync"
"time"
"github.com/bpowers/slack"
)
type EventHandler interface {
Event(evt slack.SlackEvent) (handled bool)
}
type Room interface {
EventHandler
Id() string
Name() string
IsOpen() bool
BaseChannel() *slack.BaseChannel
//Open() // maybe?
//Close() // maybe?
}
type FSConn struct {
Super *Super
api *slack.Slack
ws *slack.SlackWS
in chan slack.SlackEvent
sinks []EventHandler
users *UserSet
channels *RoomSet
groups *RoomSet
ims *RoomSet
self *Self
}
// shared by offline/offline public New functions
func newFSConn(token, infoPath string) (conn *FSConn, err error) {
var info slack.Info
conn = new(FSConn)
if infoPath != "" {
buf, err := ioutil.ReadFile(infoPath)
if err != nil {
return nil, fmt.Errorf("ReadFile(%s): %s", infoPath, err)
}
err = json.Unmarshal(buf, &info)
if err != nil {
return nil, fmt.Errorf("Unmarshal: %s", err)
}
} else {
conn.api = slack.New(token)
//conn.api.SetDebug(true)
conn.ws, err = conn.api.StartRTM("", "https://slack.com")
if err != nil {
return nil, fmt.Errorf("StartRTM(): %s\n", err)
}
info = conn.api.GetInfo()
}
conn.in = make(chan slack.SlackEvent)
conn.sinks = make([]EventHandler, 0, 5)
conn.Super = NewSuper()
users := make([]*User, 0, len(info.Users))
for _, u := range info.Users {
users = append(users, NewUser(u, conn))
}
conn.users, err = NewUserSet("users", conn, NewUserDir, users)
if err != nil {
return nil, fmt.Errorf("NewUserSet: %s", err)
}
conn.self, err = NewSelf(conn, info.User, info.Team)
if err != nil {
return nil, fmt.Errorf("NewSelf: %s", err)
}
chans := make([]Room, 0, len(info.Channels))
for _, c := range info.Channels {
chans = append(chans, NewChannel(c, conn))
}
conn.channels, err = NewRoomSet("channels", conn, NewChannelDir, chans)
if err != nil {
return nil, fmt.Errorf("NewRoomSet: %s", err)
}
groups := make([]Room, 0, len(info.Groups))
for _, g := range info.Groups {
groups = append(groups, NewGroup(g, conn))
}
conn.groups, err = NewRoomSet("groups", conn, NewGroupDir, groups)
if err != nil {
return nil, fmt.Errorf("NewRoomSet: %s", err)
}
ims := make([]Room, 0, len(info.IMs))
for _, im := range info.IMs {
ims = append(ims, NewIM(im, conn))
}
conn.ims, err = NewRoomSet("ims", conn, NewIMDir, ims)
if err != nil {
return nil, fmt.Errorf("NewRoomSet: %s", err)
}
// simplify dispatch code by keeping track of event handlers
// in a slice. We (FSConn) are an event sink too - add
// ourselves to the list first, so that we can separate
// routing logic from connection-level handling logic.
conn.sinks = append(conn.sinks, conn,
conn.users, conn.channels, conn.groups, conn.ims)
// only spawn goroutines in online mode
if infoPath == "" {
go conn.ws.HandleIncomingEvents(conn.in)
go conn.ws.Keepalive(10 * time.Second)
go conn.consumeEvents()
}
return conn, nil
}
func NewFSConn(token string) (*FSConn, error) {
return newFSConn(token, "")
}
func NewOfflineFSConn(infoPath string) (*FSConn, error) {
return newFSConn("", infoPath)
}
func (conn *FSConn) Event(evt slack.SlackEvent) bool {
switch evt.Data.(type) {
case slack.HelloEvent, slack.LatencyReport:
// TODO: keep track of potential disconnects.
return true
}
return false
}
func (conn *FSConn) consumeEvents() {
for {
evt := <-conn.in
go conn.routeEvent(evt)
}
}
func (conn *FSConn) routeEvent(evt slack.SlackEvent) {
var ok bool
for _, handler := range conn.sinks {
if ok = handler.Event(evt); ok {
break
}
}
if !ok {
fmt.Printf("unhandled evt: %#v\n", evt)
}
}
func (fs *FSConn) Send(txtBytes []byte, id string) error {
txt := strings.TrimSpace(string(txtBytes))
out := fs.ws.NewOutgoingMessage(txt, id)
err := fs.ws.SendMessage(out)
if err != nil {
log.Printf("SendMessage: %s", err)
}
// TODO(bp) add this message to the session buffer, after we
// get an ok
return err
}
type Self struct {
dn *DirNode
team *DirNode
user *SymlinkNode
}
func NewSelf(conn *FSConn, user *slack.UserDetails, team *slack.Team) (*Self, error) {
var err error
self := new(Self)
self.dn, err = NewDirNode(conn.Super.root, "self", conn)
if err != nil {
return nil, fmt.Errorf("NewDirNode(self): %s", err)
}
self.team, err = NewTeamDir(self.dn, "team", NewTeam(team, conn))
if err != nil {
return nil, fmt.Errorf("NewTeamDir(): %s", err)
}
userDir := conn.users.ds.LookupId(user.Id)
if userDir == nil {
// this is an invariant, can't continue if we don't
// know who we are.
panic(fmt.Sprintf("unknown user ID for self: %s", user.Id))
}
self.user, err = NewSymlinkNode(self.dn, "user", userDir)
if err != nil {
return nil, fmt.Errorf("NewSymlinkNode(self/user): %s", err)
}
self.user.Activate()
self.team.Activate()
self.dn.Activate()
return self, nil
}
type UserSet struct {
sync.Mutex
objs map[string]*User
ds *DirSet
conn *FSConn
}
func NewUserSet(name string, conn *FSConn, create DirCreator, users []*User) (*UserSet, error) {
var err error
us := new(UserSet)
us.conn = conn
us.objs = make(map[string]*User)
us.ds, err = NewDirSet(conn.Super.root, name, create, conn)
if err != nil {
return nil, fmt.Errorf("NewDirSet('groups'): %s", err)
}
for _, user := range users {
us.objs[user.Id] = user
// hide deleted users, they're not useful.
if user.Deleted {
continue
}
err = us.ds.Add(user.Id, user.Name, user)
if err != nil {
return nil, fmt.Errorf("Add(%s): %s", user.Id, err)
}
}
us.ds.Activate()
return us, nil
}
func (us *UserSet) Get(id string) *User {
us.Lock()
defer us.Unlock()
return us.objs[id]
}
// on change, lock UserSet, then lock User. No need to lock DirNode,
// as it doesn't change (we're not adding/removing child attributes).
// Updates to Attributes are done through atomic ops.
func (us *UserSet) Event(evt slack.SlackEvent) bool {
switch msg := evt.Data.(type) {
case *slack.ManualPresenceChangeEvent:
// ignore - when we change our own presence, we get
// both a manual and non-manual event, so we handle
// this the same way as a presence change for anyone
// else.
return true
case *slack.PresenceChangeEvent:
us.Lock()
defer us.Unlock()
user, ok := us.objs[msg.UserId]
if !ok {
log.Printf("XXX: presence change with no user object: %s", msg.UserId)
return true
}
log.Printf("Presence Change: %s -> %s", user.Name, msg.Presence)
ud := us.ds.LookupId(msg.UserId)
if ud == nil {
log.Printf("XXX: presence change for unknown user: %s", msg.UserId)
return true
}
user.mu.Lock()
defer user.mu.Unlock()
user.Presence = msg.Presence
for _, child := range ud.children {
if up, ok := child.(Updater); ok && child.Name() == "presence" {
up.Update()
}
}
return true
}
return false
}
type RoomSet struct {
sync.Mutex
name string
objs map[string]Room
ds *DirSet
conn *FSConn
}
func NewRoomSet(name string, conn *FSConn, create DirCreator, rooms []Room) (*RoomSet, error) {
var err error
rs := new(RoomSet)
rs.name = name
rs.conn = conn
rs.objs = make(map[string]Room)
rs.ds, err = NewDirSet(conn.Super.root, name, create, conn)
if err != nil {
return nil, fmt.Errorf("NewDirSet('%s'): %s", name, err)
}
for _, room := range rooms {
rs.objs[room.Id()] = room
// filesystem objects are created and destroyed based
// on whether we are members of the given room (or in
// the case of IMs and groups, whether the room is
// 'open'.
if !room.IsOpen() {
continue
}
err = rs.ds.Add(room.Id(), room.Name(), room)
if err != nil {
return nil, fmt.Errorf("Add(%s): %s", room.Id(), err)
}
}
rs.ds.Activate()
return rs, nil
}
func (rs *RoomSet) Open(evt *slack.ChannelInfoEvent) bool {
fmt.Printf("opening %#v", evt)
return true
}
func (rs *RoomSet) Event(evt slack.SlackEvent) bool {
rs.Lock()
defer rs.Unlock()
switch msg := evt.Data.(type) {
case slack.AckMessage:
for _, room := range rs.objs {
if ok := room.Event(evt); ok {
return true
}
}
return false
case *slack.MessageEvent:
if r, ok := rs.objs[msg.ChannelId]; ok {
return r.Event(evt)
}
case *slack.IMOpenEvent:
if rs.name == "ims" {
return rs.Open((*slack.ChannelInfoEvent)(msg))
}
case *slack.GroupOpenEvent:
if rs.name == "groups" {
return rs.Open((*slack.ChannelInfoEvent)(msg))
}
case *slack.IMCloseEvent:
case *slack.GroupCloseEvent:
}
return false
}