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Commit | Line | Data |
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bf0bedcb | 1 | #!/usr/bin/env php |
02008cb1 | 2 | <?php |
88e8fb3a AD |
3 | set_include_path(dirname(__FILE__) ."/include" . PATH_SEPARATOR . |
4 | get_include_path()); | |
ffa7cbae | 5 | |
02008cb1 | 6 | declare(ticks = 1); |
9b27cec8 | 7 | chdir(dirname(__FILE__)); |
02008cb1 | 8 | |
ffa7cbae | 9 | define('DISABLE_SESSIONS', true); |
02008cb1 | 10 | |
ffa7cbae AD |
11 | require_once "version.php"; |
12 | ||
010c16f1 | 13 | if (strpos(VERSION, ".99") !== false || getenv('DAEMON_XDEBUG')) { |
ffa7cbae AD |
14 | define('DAEMON_EXTENDED_DEBUG', true); |
15 | } | |
16 | ||
17 | define('PURGE_INTERVAL', 3600); // seconds | |
c90a028c | 18 | define('MAX_CHILD_RUNTIME', 600); // seconds |
ffa7cbae | 19 | |
9765e8b9 AD |
20 | require_once "functions.php"; |
21 | require_once "rssfuncs.php"; | |
ffa7cbae AD |
22 | require_once "sanity_check.php"; |
23 | require_once "config.php"; | |
5893edd5 AD |
24 | require_once "db.php"; |
25 | require_once "db-prefs.php"; | |
ffa7cbae | 26 | |
98f70418 | 27 | define('MAX_JOBS', 2); |
02008cb1 | 28 | define('SPAWN_INTERVAL', DAEMON_SLEEP_INTERVAL); |
ffa7cbae | 29 | |
16956646 AD |
30 | if (!function_exists('pcntl_fork')) { |
31 | die("error: This script requires PHP compiled with PCNTL module.\n"); | |
32 | } | |
33 | ||
724b7942 AD |
34 | $master_handlers_installed = false; |
35 | ||
e9338405 | 36 | $children = array(); |
c90a028c | 37 | $ctimes = array(); |
e9338405 | 38 | |
02008cb1 AD |
39 | $last_checkpoint = -1; |
40 | ||
5a613536 | 41 | function reap_children() { |
e9338405 | 42 | global $children; |
51ddf0f8 | 43 | global $ctimes; |
e9338405 AD |
44 | |
45 | $tmp = array(); | |
46 | ||
47 | foreach ($children as $pid) { | |
48 | if (pcntl_waitpid($pid, $status, WNOHANG) != $pid) { | |
7aabaa09 AD |
49 | |
50 | if (file_is_locked("update_daemon-$pid.lock")) { | |
8ccaff02 AD |
51 | array_push($tmp, $pid); |
52 | } else { | |
53 | _debug("[reap_children] child $pid seems active but lockfile is unlocked."); | |
125ab8db AD |
54 | unset($ctimes[$pid]); |
55 | ||
8ccaff02 | 56 | } |
e9338405 | 57 | } else { |
8ccaff02 | 58 | _debug("[reap_children] child $pid reaped."); |
c90a028c | 59 | unset($ctimes[$pid]); |
e9338405 AD |
60 | } |
61 | } | |
62 | ||
63 | $children = $tmp; | |
64 | ||
5a613536 AD |
65 | return count($tmp); |
66 | } | |
67 | ||
c90a028c AD |
68 | function check_ctimes() { |
69 | global $ctimes; | |
dbaa4e4a | 70 | |
c90a028c AD |
71 | foreach (array_keys($ctimes) as $pid) { |
72 | $started = $ctimes[$pid]; | |
73 | ||
74 | if (time() - $started > MAX_CHILD_RUNTIME) { | |
75 | _debug("[MASTER] child process $pid seems to be stuck, aborting..."); | |
0618b81c | 76 | posix_kill($pid, SIGKILL); |
c90a028c AD |
77 | } |
78 | } | |
5a613536 AD |
79 | } |
80 | ||
81 | function sigchld_handler($signal) { | |
82 | $running_jobs = reap_children(); | |
e9338405 AD |
83 | |
84 | _debug("[SIGCHLD] jobs left: $running_jobs"); | |
5a613536 | 85 | |
02008cb1 AD |
86 | pcntl_waitpid(-1, $status, WNOHANG); |
87 | } | |
88 | ||
cfe6d444 AD |
89 | function shutdown($caller_pid) { |
90 | if ($caller_pid == posix_getpid()) { | |
91 | if (file_exists(LOCK_DIRECTORY . "/update_daemon.lock")) { | |
92 | _debug("removing lockfile (master)..."); | |
93 | unlink(LOCK_DIRECTORY . "/update_daemon.lock"); | |
94 | } | |
2cd099f0 | 95 | } |
8ccaff02 AD |
96 | } |
97 | ||
98 | function task_shutdown() { | |
99 | $pid = posix_getpid(); | |
100 | ||
2cd099f0 AD |
101 | if (file_exists(LOCK_DIRECTORY . "/update_daemon-$pid.lock")) { |
102 | _debug("removing lockfile ($pid)..."); | |
8ccaff02 | 103 | unlink(LOCK_DIRECTORY . "/update_daemon-$pid.lock"); |
2cd099f0 | 104 | } |
8ccaff02 AD |
105 | } |
106 | ||
6a69e61f | 107 | function sigint_handler() { |
2cd099f0 | 108 | _debug("[MASTER] SIG_INT received.\n"); |
cfe6d444 | 109 | shutdown(posix_getpid()); |
2cd099f0 | 110 | die; |
dbaa4e4a | 111 | } |
8ccaff02 AD |
112 | |
113 | function task_sigint_handler() { | |
2cd099f0 | 114 | _debug("[TASK] SIG_INT received.\n"); |
8ccaff02 | 115 | task_shutdown(); |
2cd099f0 | 116 | die; |
dbaa4e4a | 117 | } |
6a69e61f | 118 | |
02008cb1 | 119 | pcntl_signal(SIGCHLD, 'sigchld_handler'); |
6a69e61f | 120 | |
884c0a36 AD |
121 | if (file_is_locked("update_daemon.lock")) { |
122 | die("error: Can't create lockfile. ". | |
6a69e61f AD |
123 | "Maybe another daemon is already running.\n"); |
124 | } | |
02008cb1 | 125 | |
1a43a68c AD |
126 | // Try to lock a file in order to avoid concurrent update. |
127 | $lock_handle = make_lockfile("update_daemon.lock"); | |
128 | ||
129 | if (!$lock_handle) { | |
130 | die("error: Can't create lockfile. ". | |
131 | "Maybe another daemon is already running.\n"); | |
132 | } | |
133 | ||
ffa7cbae AD |
134 | // Testing database connection. |
135 | // It is unnecessary to start the fork loop if database is not ok. | |
dbaa4e4a | 136 | $link = db_connect(DB_HOST, DB_USER, DB_PASS, DB_NAME); |
ffa7cbae | 137 | |
5f0a3741 | 138 | if (!init_connection($link)) return; |
ffa7cbae AD |
139 | |
140 | db_close($link); | |
141 | ||
02008cb1 AD |
142 | while (true) { |
143 | ||
45004d43 AD |
144 | // Since sleep is interupted by SIGCHLD, we need another way to |
145 | // respect the SPAWN_INTERVAL | |
02008cb1 AD |
146 | $next_spawn = $last_checkpoint + SPAWN_INTERVAL - time(); |
147 | ||
ce1aa9b7 | 148 | if ($next_spawn % 10 == 0) { |
e9338405 AD |
149 | $running_jobs = count($children); |
150 | _debug("[MASTER] active jobs: $running_jobs, next spawn at $next_spawn sec."); | |
ce1aa9b7 | 151 | } |
02008cb1 AD |
152 | |
153 | if ($last_checkpoint + SPAWN_INTERVAL < time()) { | |
154 | ||
c90a028c | 155 | check_ctimes(); |
5a613536 AD |
156 | reap_children(); |
157 | ||
e9338405 | 158 | for ($j = count($children); $j < MAX_JOBS; $j++) { |
02008cb1 AD |
159 | $pid = pcntl_fork(); |
160 | if ($pid == -1) { | |
161 | die("fork failed!\n"); | |
162 | } else if ($pid) { | |
724b7942 AD |
163 | |
164 | if (!$master_handlers_installed) { | |
165 | _debug("[MASTER] installing shutdown handlers"); | |
166 | pcntl_signal(SIGINT, 'sigint_handler'); | |
cfe6d444 | 167 | register_shutdown_function('shutdown', posix_getpid()); |
724b7942 AD |
168 | $master_handlers_installed = true; |
169 | } | |
170 | ||
e9338405 AD |
171 | _debug("[MASTER] spawned client $j [PID:$pid]..."); |
172 | array_push($children, $pid); | |
c90a028c | 173 | $ctimes[$pid] = time(); |
02008cb1 AD |
174 | } else { |
175 | pcntl_signal(SIGCHLD, SIG_IGN); | |
8ccaff02 AD |
176 | pcntl_signal(SIGINT, 'task_sigint_handler'); |
177 | ||
178 | register_shutdown_function('task_shutdown'); | |
179 | ||
180 | $my_pid = posix_getpid(); | |
181 | $lock_filename = "update_daemon-$my_pid.lock"; | |
182 | ||
183 | $lock_handle = make_lockfile($lock_filename); | |
184 | ||
185 | if (!$lock_handle) { | |
186 | die("error: Can't create lockfile ($lock_filename). ". | |
187 | "Maybe another daemon is already running.\n"); | |
188 | } | |
ffa7cbae AD |
189 | |
190 | // ****** Updating RSS code ******* | |
191 | // Only run in fork process. | |
192 | ||
193 | $start_timestamp = time(); | |
194 | ||
dbaa4e4a | 195 | $link = db_connect(DB_HOST, DB_USER, DB_PASS, DB_NAME); |
ffa7cbae | 196 | |
5f0a3741 | 197 | if (!init_connection($link)) return; |
ffa7cbae AD |
198 | |
199 | // We disable stamp file, since it is of no use in a multiprocess update. | |
200 | // not really, tho for the time being -fox | |
201 | if (!make_stampfile('update_daemon.stamp')) { | |
f421fcd7 | 202 | die("error: unable to create stampfile\n"); |
dbaa4e4a | 203 | } |
ffa7cbae | 204 | |
dbaa4e4a | 205 | // Call to the feed batch update function |
e3b54693 AD |
206 | // or regenerate feedbrowser cache |
207 | ||
8ccaff02 | 208 | if (rand(0,100) > 30) { |
e3b54693 AD |
209 | update_daemon_common($link); |
210 | } else { | |
211 | $count = update_feedbrowser_cache($link); | |
e3b42c5a AD |
212 | _debug("Feedbrowser updated, $count feeds processed."); |
213 | ||
214 | purge_orphans($link, true); | |
215 | ||
216 | $rc = cleanup_tags($link, 14, 50000); | |
217 | ||
218 | _debug("Cleaned $rc cached tags."); | |
219 | ||
41b82aa4 AD |
220 | global $pluginhost; |
221 | $pluginhost->run_hooks($pluginhost::HOOK_UPDATE_TASK, "hook_update_task", $op); | |
e3b54693 | 222 | } |
ffa7cbae | 223 | |
0d6a7147 | 224 | _debug("Elapsed time: " . (time() - $start_timestamp) . " second(s)"); |
dbaa4e4a | 225 | |
ffa7cbae AD |
226 | db_close($link); |
227 | ||
228 | // We are in a fork. | |
229 | // We wait a little before exiting to avoid to be faster than our parent process. | |
230 | sleep(1); | |
8ccaff02 AD |
231 | |
232 | unlink(LOCK_DIRECTORY . "/$lock_filename"); | |
233 | ||
ffa7cbae | 234 | // We exit in order to avoid fork bombing. |
02008cb1 AD |
235 | exit(0); |
236 | } | |
0d6a7147 AD |
237 | |
238 | // We wait a little time before the next fork, in order to let the first fork | |
239 | // mark the feeds it update : | |
240 | sleep(1); | |
02008cb1 AD |
241 | } |
242 | $last_checkpoint = time(); | |
243 | } | |
244 | sleep(1); | |
245 | } | |
246 | ||
247 | ?> |