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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"; | |
5893edd5 | 26 | require_once "lib/magpierss/rss_fetch.inc"; |
ffa7cbae | 27 | |
98f70418 | 28 | define('MAX_JOBS', 2); |
02008cb1 | 29 | define('SPAWN_INTERVAL', DAEMON_SLEEP_INTERVAL); |
ffa7cbae | 30 | |
16956646 AD |
31 | if (!function_exists('pcntl_fork')) { |
32 | die("error: This script requires PHP compiled with PCNTL module.\n"); | |
33 | } | |
34 | ||
e9338405 | 35 | $children = array(); |
c90a028c | 36 | $ctimes = array(); |
e9338405 | 37 | |
02008cb1 AD |
38 | $last_checkpoint = -1; |
39 | ||
5a613536 | 40 | function reap_children() { |
e9338405 | 41 | global $children; |
51ddf0f8 | 42 | global $ctimes; |
e9338405 AD |
43 | |
44 | $tmp = array(); | |
45 | ||
46 | foreach ($children as $pid) { | |
47 | if (pcntl_waitpid($pid, $status, WNOHANG) != $pid) { | |
7aabaa09 AD |
48 | |
49 | if (file_is_locked("update_daemon-$pid.lock")) { | |
8ccaff02 AD |
50 | array_push($tmp, $pid); |
51 | } else { | |
52 | _debug("[reap_children] child $pid seems active but lockfile is unlocked."); | |
125ab8db AD |
53 | unset($ctimes[$pid]); |
54 | ||
8ccaff02 | 55 | } |
e9338405 | 56 | } else { |
8ccaff02 | 57 | _debug("[reap_children] child $pid reaped."); |
c90a028c | 58 | unset($ctimes[$pid]); |
e9338405 AD |
59 | } |
60 | } | |
61 | ||
62 | $children = $tmp; | |
63 | ||
5a613536 AD |
64 | return count($tmp); |
65 | } | |
66 | ||
c90a028c AD |
67 | function check_ctimes() { |
68 | global $ctimes; | |
dbaa4e4a | 69 | |
c90a028c AD |
70 | foreach (array_keys($ctimes) as $pid) { |
71 | $started = $ctimes[$pid]; | |
72 | ||
73 | if (time() - $started > MAX_CHILD_RUNTIME) { | |
74 | _debug("[MASTER] child process $pid seems to be stuck, aborting..."); | |
0618b81c | 75 | posix_kill($pid, SIGKILL); |
c90a028c AD |
76 | } |
77 | } | |
5a613536 AD |
78 | } |
79 | ||
80 | function sigchld_handler($signal) { | |
81 | $running_jobs = reap_children(); | |
e9338405 AD |
82 | |
83 | _debug("[SIGCHLD] jobs left: $running_jobs"); | |
5a613536 | 84 | |
02008cb1 AD |
85 | pcntl_waitpid(-1, $status, WNOHANG); |
86 | } | |
87 | ||
8ccaff02 AD |
88 | function shutdown() { |
89 | if (file_exists(LOCK_DIRECTORY . "/update_daemon.lock")) | |
90 | unlink(LOCK_DIRECTORY . "/update_daemon.lock"); | |
91 | } | |
92 | ||
93 | function task_shutdown() { | |
94 | $pid = posix_getpid(); | |
95 | ||
96 | if (file_exists(LOCK_DIRECTORY . "/update_daemon-$pid.lock")) | |
97 | unlink(LOCK_DIRECTORY . "/update_daemon-$pid.lock"); | |
98 | } | |
99 | ||
6a69e61f | 100 | function sigint_handler() { |
8ccaff02 | 101 | shutdown(); |
a65a05a7 | 102 | die("[SIGINT] removing lockfile and exiting.\n"); |
dbaa4e4a | 103 | } |
8ccaff02 AD |
104 | |
105 | function task_sigint_handler() { | |
106 | task_shutdown(); | |
107 | die("[SIGINT] removing lockfile and exiting.\n"); | |
dbaa4e4a | 108 | } |
6a69e61f | 109 | |
02008cb1 | 110 | pcntl_signal(SIGCHLD, 'sigchld_handler'); |
6a69e61f | 111 | |
884c0a36 AD |
112 | if (file_is_locked("update_daemon.lock")) { |
113 | die("error: Can't create lockfile. ". | |
6a69e61f AD |
114 | "Maybe another daemon is already running.\n"); |
115 | } | |
02008cb1 | 116 | |
884c0a36 | 117 | if (!pcntl_fork()) { |
0d6a7147 | 118 | pcntl_signal(SIGINT, 'sigint_handler'); |
8ccaff02 | 119 | register_shutdown_function('shutdown'); |
0d6a7147 | 120 | |
45004d43 | 121 | // Try to lock a file in order to avoid concurrent update. |
884c0a36 AD |
122 | $lock_handle = make_lockfile("update_daemon.lock"); |
123 | ||
124 | if (!$lock_handle) { | |
125 | die("error: Can't create lockfile. ". | |
126 | "Maybe another daemon is already running.\n"); | |
127 | } | |
128 | ||
129 | while (true) { sleep(100); } | |
130 | } | |
131 | ||
ffa7cbae AD |
132 | // Testing database connection. |
133 | // It is unnecessary to start the fork loop if database is not ok. | |
dbaa4e4a | 134 | $link = db_connect(DB_HOST, DB_USER, DB_PASS, DB_NAME); |
ffa7cbae | 135 | |
5f0a3741 | 136 | if (!init_connection($link)) return; |
ffa7cbae AD |
137 | |
138 | db_close($link); | |
139 | ||
02008cb1 AD |
140 | while (true) { |
141 | ||
45004d43 AD |
142 | // Since sleep is interupted by SIGCHLD, we need another way to |
143 | // respect the SPAWN_INTERVAL | |
02008cb1 AD |
144 | $next_spawn = $last_checkpoint + SPAWN_INTERVAL - time(); |
145 | ||
ce1aa9b7 | 146 | if ($next_spawn % 10 == 0) { |
e9338405 AD |
147 | $running_jobs = count($children); |
148 | _debug("[MASTER] active jobs: $running_jobs, next spawn at $next_spawn sec."); | |
ce1aa9b7 | 149 | } |
02008cb1 AD |
150 | |
151 | if ($last_checkpoint + SPAWN_INTERVAL < time()) { | |
152 | ||
c90a028c | 153 | check_ctimes(); |
5a613536 AD |
154 | reap_children(); |
155 | ||
e9338405 | 156 | for ($j = count($children); $j < MAX_JOBS; $j++) { |
02008cb1 AD |
157 | $pid = pcntl_fork(); |
158 | if ($pid == -1) { | |
159 | die("fork failed!\n"); | |
160 | } else if ($pid) { | |
e9338405 AD |
161 | _debug("[MASTER] spawned client $j [PID:$pid]..."); |
162 | array_push($children, $pid); | |
c90a028c | 163 | $ctimes[$pid] = time(); |
02008cb1 AD |
164 | } else { |
165 | pcntl_signal(SIGCHLD, SIG_IGN); | |
8ccaff02 AD |
166 | pcntl_signal(SIGINT, 'task_sigint_handler'); |
167 | ||
168 | register_shutdown_function('task_shutdown'); | |
169 | ||
170 | $my_pid = posix_getpid(); | |
171 | $lock_filename = "update_daemon-$my_pid.lock"; | |
172 | ||
173 | $lock_handle = make_lockfile($lock_filename); | |
174 | ||
175 | if (!$lock_handle) { | |
176 | die("error: Can't create lockfile ($lock_filename). ". | |
177 | "Maybe another daemon is already running.\n"); | |
178 | } | |
ffa7cbae AD |
179 | |
180 | // ****** Updating RSS code ******* | |
181 | // Only run in fork process. | |
182 | ||
183 | $start_timestamp = time(); | |
184 | ||
dbaa4e4a | 185 | $link = db_connect(DB_HOST, DB_USER, DB_PASS, DB_NAME); |
ffa7cbae | 186 | |
5f0a3741 | 187 | if (!init_connection($link)) return; |
ffa7cbae AD |
188 | |
189 | // We disable stamp file, since it is of no use in a multiprocess update. | |
190 | // not really, tho for the time being -fox | |
191 | if (!make_stampfile('update_daemon.stamp')) { | |
192 | print "warning: unable to create stampfile"; | |
dbaa4e4a | 193 | } |
ffa7cbae | 194 | |
dbaa4e4a | 195 | // Call to the feed batch update function |
e3b54693 AD |
196 | // or regenerate feedbrowser cache |
197 | ||
8ccaff02 | 198 | if (rand(0,100) > 30) { |
e3b54693 AD |
199 | update_daemon_common($link); |
200 | } else { | |
201 | $count = update_feedbrowser_cache($link); | |
e3b42c5a AD |
202 | _debug("Feedbrowser updated, $count feeds processed."); |
203 | ||
204 | purge_orphans($link, true); | |
205 | ||
206 | $rc = cleanup_tags($link, 14, 50000); | |
207 | ||
208 | _debug("Cleaned $rc cached tags."); | |
209 | ||
ae5f7bb1 AD |
210 | _debug("Updating linked feeds..."); |
211 | get_linked_feeds($link); | |
212 | ||
e3b54693 | 213 | } |
ffa7cbae | 214 | |
0d6a7147 | 215 | _debug("Elapsed time: " . (time() - $start_timestamp) . " second(s)"); |
dbaa4e4a | 216 | |
ffa7cbae AD |
217 | db_close($link); |
218 | ||
219 | // We are in a fork. | |
220 | // We wait a little before exiting to avoid to be faster than our parent process. | |
221 | sleep(1); | |
8ccaff02 AD |
222 | |
223 | unlink(LOCK_DIRECTORY . "/$lock_filename"); | |
224 | ||
ffa7cbae | 225 | // We exit in order to avoid fork bombing. |
02008cb1 AD |
226 | exit(0); |
227 | } | |
0d6a7147 AD |
228 | |
229 | // We wait a little time before the next fork, in order to let the first fork | |
230 | // mark the feeds it update : | |
231 | sleep(1); | |
02008cb1 AD |
232 | } |
233 | $last_checkpoint = time(); | |
234 | } | |
235 | sleep(1); | |
236 | } | |
237 | ||
238 | ?> |