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
|
<?php
/*
* Laconica - a distributed open-source microblogging tool
* Copyright (C) 2008, Controlez-Vous, Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
define('CLAIM_TIMEOUT', 1200);
if (!defined('LACONICA')) { exit(1); }
require_once(INSTALLDIR.'/lib/daemon.php');
require_once(INSTALLDIR.'/classes/Queue_item.php');
require_once(INSTALLDIR.'/classes/Notice.php');
class QueueHandler extends Daemon {
var $_id = 'generic';
function QueueHandler($id=null) {
if ($id) {
$this->set_id($id);
}
}
function class_name() {
return ucfirst($this->transport()) . 'Handler';
}
function name() {
return strtolower($this->class_name().'.'.$this->get_id());
}
function get_id() {
return $this->_id;
}
function set_id($id) {
$this->_id = $id;
}
function transport() {
return null;
}
function start() {
}
function finish() {
}
function handle_notice($notice) {
return true;
}
function run() {
if (!$this->start()) {
return false;
}
$this->log(LOG_INFO, 'checking for queued notices');
$transport = $this->transport();
do {
$qi = Queue_item::top($transport);
if ($qi) {
$this->log(LOG_INFO, 'Got item enqueued '.common_exact_date($qi->created));
$notice = Notice::staticGet($qi->notice_id);
if ($notice) {
$this->log(LOG_INFO, 'broadcasting notice ID = ' . $notice->id);
# XXX: what to do if broadcast fails?
$result = $this->handle_notice($notice);
if (!$result) {
$this->log(LOG_WARNING, 'Failed broadcast for notice ID = ' . $notice->id);
$orig = $qi;
$qi->claimed = null;
$qi->update($orig);
$this->log(LOG_WARNING, 'Abandoned claim for notice ID = ' . $notice->id);
continue;
}
$this->log(LOG_INFO, 'finished broadcasting notice ID = ' . $notice->id);
$notice->free();
unset($notice);
$notice = null;
} else {
$this->log(LOG_WARNING, 'queue item for notice that does not exist');
}
$qi->delete();
$qi->free();
unset($qi);
$this->idle(0);
} else {
$this->clear_old_claims();
$this->idle(5);
}
} while (true);
if (!$this->finish()) {
return false;
}
return true;
}
function idle($timeout=0) {
if ($timeout>0) {
sleep($timeout);
}
}
function clear_old_claims() {
$qi = new Queue_item();
$qi->transport = $this->transport();
$qi->whereAdd('now() - claimed > '.CLAIM_TIMEOUT);
$qi->update(DB_DATAOBJECT_WHEREADD_ONLY);
$qi->free();
unset($qi);
}
function log($level, $msg) {
common_log($level, $this->class_name() . ' ('. $this->get_id() .'): '.$msg);
}
}
|
