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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 | ||
e9338405 | 34 | $children = array(); |
c90a028c | 35 | $ctimes = array(); |
e9338405 | 36 | |
02008cb1 AD |
37 | $last_checkpoint = -1; |
38 | ||
5a613536 | 39 | function reap_children() { |
e9338405 | 40 | global $children; |
51ddf0f8 | 41 | global $ctimes; |
e9338405 AD |
42 | |
43 | $tmp = array(); | |
44 | ||
45 | foreach ($children as $pid) { | |
46 | if (pcntl_waitpid($pid, $status, WNOHANG) != $pid) { | |
7aabaa09 AD |
47 | |
48 | if (file_is_locked("update_daemon-$pid.lock")) { | |
8ccaff02 AD |
49 | array_push($tmp, $pid); |
50 | } else { | |
51 | _debug("[reap_children] child $pid seems active but lockfile is unlocked."); | |
125ab8db AD |
52 | unset($ctimes[$pid]); |
53 | ||
8ccaff02 | 54 | } |
e9338405 | 55 | } else { |
8ccaff02 | 56 | _debug("[reap_children] child $pid reaped."); |
c90a028c | 57 | unset($ctimes[$pid]); |
e9338405 AD |
58 | } |
59 | } | |
60 | ||
61 | $children = $tmp; | |
62 | ||
5a613536 AD |
63 | return count($tmp); |
64 | } | |
65 | ||
c90a028c AD |
66 | function check_ctimes() { |
67 | global $ctimes; | |
dbaa4e4a | 68 | |
c90a028c AD |
69 | foreach (array_keys($ctimes) as $pid) { |
70 | $started = $ctimes[$pid]; | |
71 | ||
72 | if (time() - $started > MAX_CHILD_RUNTIME) { | |
73 | _debug("[MASTER] child process $pid seems to be stuck, aborting..."); | |
0618b81c | 74 | posix_kill($pid, SIGKILL); |
c90a028c AD |
75 | } |
76 | } | |
5a613536 AD |
77 | } |
78 | ||
79 | function sigchld_handler($signal) { | |
80 | $running_jobs = reap_children(); | |
e9338405 AD |
81 | |
82 | _debug("[SIGCHLD] jobs left: $running_jobs"); | |
5a613536 | 83 | |
02008cb1 AD |
84 | pcntl_waitpid(-1, $status, WNOHANG); |
85 | } | |
86 | ||
8ccaff02 AD |
87 | function shutdown() { |
88 | if (file_exists(LOCK_DIRECTORY . "/update_daemon.lock")) | |
89 | unlink(LOCK_DIRECTORY . "/update_daemon.lock"); | |
90 | } | |
91 | ||
92 | function task_shutdown() { | |
93 | $pid = posix_getpid(); | |
94 | ||
95 | if (file_exists(LOCK_DIRECTORY . "/update_daemon-$pid.lock")) | |
96 | unlink(LOCK_DIRECTORY . "/update_daemon-$pid.lock"); | |
97 | } | |
98 | ||
6a69e61f | 99 | function sigint_handler() { |
8ccaff02 | 100 | shutdown(); |
a65a05a7 | 101 | die("[SIGINT] removing lockfile and exiting.\n"); |
dbaa4e4a | 102 | } |
8ccaff02 AD |
103 | |
104 | function task_sigint_handler() { | |
105 | task_shutdown(); | |
106 | die("[SIGINT] removing lockfile and exiting.\n"); | |
dbaa4e4a | 107 | } |
6a69e61f | 108 | |
02008cb1 | 109 | pcntl_signal(SIGCHLD, 'sigchld_handler'); |
6a69e61f | 110 | |
884c0a36 AD |
111 | if (file_is_locked("update_daemon.lock")) { |
112 | die("error: Can't create lockfile. ". | |
6a69e61f AD |
113 | "Maybe another daemon is already running.\n"); |
114 | } | |
02008cb1 | 115 | |
77c21cef | 116 | /* if (!pcntl_fork()) { |
0d6a7147 | 117 | pcntl_signal(SIGINT, 'sigint_handler'); |
8ccaff02 | 118 | register_shutdown_function('shutdown'); |
0d6a7147 | 119 | |
45004d43 | 120 | // Try to lock a file in order to avoid concurrent update. |
884c0a36 AD |
121 | $lock_handle = make_lockfile("update_daemon.lock"); |
122 | ||
123 | if (!$lock_handle) { | |
124 | die("error: Can't create lockfile. ". | |
125 | "Maybe another daemon is already running.\n"); | |
126 | } | |
127 | ||
128 | while (true) { sleep(100); } | |
77c21cef | 129 | } */ |
884c0a36 | 130 | |
ffa7cbae AD |
131 | // Testing database connection. |
132 | // It is unnecessary to start the fork loop if database is not ok. | |
dbaa4e4a | 133 | $link = db_connect(DB_HOST, DB_USER, DB_PASS, DB_NAME); |
ffa7cbae | 134 | |
5f0a3741 | 135 | if (!init_connection($link)) return; |
ffa7cbae AD |
136 | |
137 | db_close($link); | |
138 | ||
02008cb1 AD |
139 | while (true) { |
140 | ||
45004d43 AD |
141 | // Since sleep is interupted by SIGCHLD, we need another way to |
142 | // respect the SPAWN_INTERVAL | |
02008cb1 AD |
143 | $next_spawn = $last_checkpoint + SPAWN_INTERVAL - time(); |
144 | ||
ce1aa9b7 | 145 | if ($next_spawn % 10 == 0) { |
e9338405 AD |
146 | $running_jobs = count($children); |
147 | _debug("[MASTER] active jobs: $running_jobs, next spawn at $next_spawn sec."); | |
ce1aa9b7 | 148 | } |
02008cb1 AD |
149 | |
150 | if ($last_checkpoint + SPAWN_INTERVAL < time()) { | |
151 | ||
c90a028c | 152 | check_ctimes(); |
5a613536 AD |
153 | reap_children(); |
154 | ||
e9338405 | 155 | for ($j = count($children); $j < MAX_JOBS; $j++) { |
02008cb1 AD |
156 | $pid = pcntl_fork(); |
157 | if ($pid == -1) { | |
158 | die("fork failed!\n"); | |
159 | } else if ($pid) { | |
e9338405 AD |
160 | _debug("[MASTER] spawned client $j [PID:$pid]..."); |
161 | array_push($children, $pid); | |
c90a028c | 162 | $ctimes[$pid] = time(); |
02008cb1 AD |
163 | } else { |
164 | pcntl_signal(SIGCHLD, SIG_IGN); | |
8ccaff02 AD |
165 | pcntl_signal(SIGINT, 'task_sigint_handler'); |
166 | ||
167 | register_shutdown_function('task_shutdown'); | |
168 | ||
169 | $my_pid = posix_getpid(); | |
170 | $lock_filename = "update_daemon-$my_pid.lock"; | |
171 | ||
172 | $lock_handle = make_lockfile($lock_filename); | |
173 | ||
174 | if (!$lock_handle) { | |
175 | die("error: Can't create lockfile ($lock_filename). ". | |
176 | "Maybe another daemon is already running.\n"); | |
177 | } | |
ffa7cbae AD |
178 | |
179 | // ****** Updating RSS code ******* | |
180 | // Only run in fork process. | |
181 | ||
182 | $start_timestamp = time(); | |
183 | ||
dbaa4e4a | 184 | $link = db_connect(DB_HOST, DB_USER, DB_PASS, DB_NAME); |
ffa7cbae | 185 | |
5f0a3741 | 186 | if (!init_connection($link)) return; |
ffa7cbae AD |
187 | |
188 | // We disable stamp file, since it is of no use in a multiprocess update. | |
189 | // not really, tho for the time being -fox | |
190 | if (!make_stampfile('update_daemon.stamp')) { | |
191 | print "warning: unable to create stampfile"; | |
dbaa4e4a | 192 | } |
ffa7cbae | 193 | |
dbaa4e4a | 194 | // Call to the feed batch update function |
e3b54693 AD |
195 | // or regenerate feedbrowser cache |
196 | ||
8ccaff02 | 197 | if (rand(0,100) > 30) { |
e3b54693 AD |
198 | update_daemon_common($link); |
199 | } else { | |
200 | $count = update_feedbrowser_cache($link); | |
e3b42c5a AD |
201 | _debug("Feedbrowser updated, $count feeds processed."); |
202 | ||
203 | purge_orphans($link, true); | |
204 | ||
205 | $rc = cleanup_tags($link, 14, 50000); | |
206 | ||
207 | _debug("Cleaned $rc cached tags."); | |
208 | ||
41b82aa4 AD |
209 | global $pluginhost; |
210 | $pluginhost->run_hooks($pluginhost::HOOK_UPDATE_TASK, "hook_update_task", $op); | |
e3b54693 | 211 | } |
ffa7cbae | 212 | |
0d6a7147 | 213 | _debug("Elapsed time: " . (time() - $start_timestamp) . " second(s)"); |
dbaa4e4a | 214 | |
ffa7cbae AD |
215 | db_close($link); |
216 | ||
217 | // We are in a fork. | |
218 | // We wait a little before exiting to avoid to be faster than our parent process. | |
219 | sleep(1); | |
8ccaff02 AD |
220 | |
221 | unlink(LOCK_DIRECTORY . "/$lock_filename"); | |
222 | ||
ffa7cbae | 223 | // We exit in order to avoid fork bombing. |
02008cb1 AD |
224 | exit(0); |
225 | } | |
0d6a7147 AD |
226 | |
227 | // We wait a little time before the next fork, in order to let the first fork | |
228 | // mark the feeds it update : | |
229 | sleep(1); | |
02008cb1 AD |
230 | } |
231 | $last_checkpoint = time(); | |
232 | } | |
233 | sleep(1); | |
234 | } | |
235 | ||
236 | ?> |