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
|
<?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');
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 = NULL;
} else {
$this->log(LOG_WARNING, 'queue item for notice that does not exist');
}
$qi->delete();
$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);
$qi->update(DB_DATAOBJECT_WHEREADD_ONLY);
}
function log($level, $msg) {
common_log($level, $this->class_name() . ' ('. $this->get_id() .'): '.$msg);
}
}
|
