forked from ortuman/jackal
-
Notifications
You must be signed in to change notification settings - Fork 0
/
offline.go
59 lines (52 loc) · 1.62 KB
/
offline.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
/*
* Copyright (c) 2018 Miguel Ángel Ortuño.
* See the LICENSE file for more information.
*/
package badgerdb
import (
"github.com/dgraph-io/badger"
"github.com/ortuman/jackal/xmpp"
)
// InsertOfflineMessage inserts a new message element into
// user's offline queue.
func (b *Storage) InsertOfflineMessage(message *xmpp.Message, username string) error {
return b.db.Update(func(tx *badger.Txn) error {
return b.insertOrUpdate(message, b.offlineMessageKey(username, message.ID()), tx)
})
}
// CountOfflineMessages returns current length of user's offline queue.
func (b *Storage) CountOfflineMessages(username string) (int, error) {
cnt := 0
prefix := []byte("offlineMessages:" + username)
err := b.forEachKey(prefix, func(key []byte) error {
cnt++
return nil
})
return cnt, err
}
// FetchOfflineMessages retrieves from storage current user offline queue.
func (b *Storage) FetchOfflineMessages(username string) ([]*xmpp.Message, error) {
var msgs []xmpp.Message
if err := b.fetchAll(&msgs, []byte("offlineMessages:"+username)); err != nil {
return nil, err
}
switch len(msgs) {
case 0:
return nil, nil
default:
ret := make([]*xmpp.Message, len(msgs))
for i := 0; i < len(msgs); i++ {
ret[i] = &msgs[i]
}
return ret, nil
}
}
// DeleteOfflineMessages clears a user offline queue.
func (b *Storage) DeleteOfflineMessages(username string) error {
return b.db.Update(func(tx *badger.Txn) error {
return b.deletePrefix([]byte("offlineMessages:"+username), tx)
})
}
func (b *Storage) offlineMessageKey(username, identifier string) []byte {
return []byte("offlineMessages:" + username + ":" + identifier)
}