forked from keybase/client
-
Notifications
You must be signed in to change notification settings - Fork 0
/
sync_trackers.go
152 lines (121 loc) · 3.17 KB
/
sync_trackers.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
// Copyright 2015 Keybase, Inc. All rights reserved. Use of
// this source code is governed by the included BSD license.
// A module for syncing trackers from the server
package libkb
import (
"sync"
keybase1 "github.com/keybase/client/go/protocol"
)
const (
TrackStatusNone = 0
TrackStatusTracking = 1
)
type Tracker keybase1.Tracker
func (t Tracker) GetUID() keybase1.UID { return keybase1.UID(t.Tracker) }
func (t Tracker) Eq(t2 Tracker) bool {
return t.GetUID().Equal(t2.GetUID()) && t.Status == t2.Status && t.MTime == t2.MTime
}
type Trackers struct {
Version int `json:"version"`
Trackers []Tracker `json:"trackers"`
}
type TrackerSyncer struct {
// Locks the whole object
sync.RWMutex
Contextified
dirty bool
trackers *Trackers
}
// Remove duplicates and "untrack" statements in the list
func (t Trackers) compact() (ret Trackers) {
index := make(map[keybase1.UID]int)
ret.Version = t.Version
for _, el := range t.Trackers {
if _, found := index[el.GetUID()]; !found {
index[el.GetUID()] = el.Status
if el.Status == TrackStatusTracking {
ret.Trackers = append(ret.Trackers, el)
}
}
}
return ret
}
func NewTrackerSyncer(uid keybase1.UID, g *GlobalContext) *TrackerSyncer {
return &TrackerSyncer{
Contextified: Contextified{g},
dirty: false,
}
}
func (t *TrackerSyncer) Trackers() *Trackers {
return t.trackers
}
func (t *TrackerSyncer) dbKey(uid keybase1.UID) DbKey {
return DbKeyUID(DBTrackers, uid)
}
func (t *TrackerSyncer) loadFromStorage(uid keybase1.UID) (err error) {
var found bool
var tmp Trackers
found, err = t.G().LocalDb.GetInto(&tmp, t.dbKey(uid))
t.G().Log.Debug("| loadFromStorage -> found=%v, err=%s", found, ErrToOk(err))
if found {
t.G().Log.Debug("| Loaded version %d", tmp.Version)
t.trackers = &tmp
} else if err == nil {
t.G().Log.Debug("| Loaded empty record set")
}
return err
}
func (t *TrackerSyncer) store(uid keybase1.UID) (err error) {
if !t.dirty {
return
}
if err = t.G().LocalDb.PutObj(t.dbKey(uid), nil, t.trackers); err != nil {
return
}
t.dirty = false
return
}
func (t *TrackerSyncer) getLoadedVersion() int {
ret := -1
if t.trackers != nil {
ret = t.trackers.Version
}
return ret
}
func (t *TrackerSyncer) needsLogin() bool { return false }
func (t *TrackerSyncer) syncFromServer(uid keybase1.UID, sr SessionReader) (err error) {
lv := t.getLoadedVersion()
hargs := HTTPArgs{
"uid": UIDArg(uid),
"limit": I{5000},
}
if lv >= 0 {
hargs.Add("version", I{lv})
}
var res *APIRes
res, err = t.G().API.Get(APIArg{
Endpoint: "user/trackers",
Args: hargs,
NeedSession: false,
})
t.G().Log.Debug("| syncFromServer() -> %s", ErrToOk(err))
if err != nil {
return
}
var tmp Trackers
if err = res.Body.UnmarshalAgain(&tmp); err != nil {
return
}
if lv < 0 || tmp.Version > lv {
t.G().Log.Debug("| syncFromServer(): got update %d > %d (%d records)", tmp.Version, lv,
len(tmp.Trackers))
tmp = tmp.compact()
t.G().Log.Debug("| syncFromServer(): got update %d > %d (%d records)", tmp.Version, lv,
len(tmp.Trackers))
t.trackers = &tmp
t.dirty = true
} else {
t.G().Log.Debug("| syncFromServer(): no change needed @ %d", lv)
}
return
}