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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 | ||
404e2e36 | 17 | require_once "autoload.php"; |
9765e8b9 AD |
18 | require_once "functions.php"; |
19 | require_once "rssfuncs.php"; | |
ffa7cbae AD |
20 | require_once "sanity_check.php"; |
21 | require_once "config.php"; | |
5893edd5 AD |
22 | require_once "db.php"; |
23 | require_once "db-prefs.php"; | |
ffa7cbae | 24 | |
dc24b520 AD |
25 | // defaults |
26 | define('PURGE_INTERVAL', 3600); // seconds | |
27 | define('MAX_CHILD_RUNTIME', 600); // seconds | |
98f70418 | 28 | define('MAX_JOBS', 2); |
dc24b520 | 29 | define('SPAWN_INTERVAL', DAEMON_SLEEP_INTERVAL); // seconds |
ffa7cbae | 30 | |
16956646 AD |
31 | if (!function_exists('pcntl_fork')) { |
32 | die("error: This script requires PHP compiled with PCNTL module.\n"); | |
33 | } | |
34 | ||
724b7942 AD |
35 | $master_handlers_installed = false; |
36 | ||
e9338405 | 37 | $children = array(); |
c90a028c | 38 | $ctimes = array(); |
e9338405 | 39 | |
02008cb1 AD |
40 | $last_checkpoint = -1; |
41 | ||
5a613536 | 42 | function reap_children() { |
e9338405 | 43 | global $children; |
51ddf0f8 | 44 | global $ctimes; |
e9338405 AD |
45 | |
46 | $tmp = array(); | |
47 | ||
48 | foreach ($children as $pid) { | |
49 | if (pcntl_waitpid($pid, $status, WNOHANG) != $pid) { | |
7aabaa09 AD |
50 | |
51 | if (file_is_locked("update_daemon-$pid.lock")) { | |
8ccaff02 AD |
52 | array_push($tmp, $pid); |
53 | } else { | |
54 | _debug("[reap_children] child $pid seems active but lockfile is unlocked."); | |
125ab8db AD |
55 | unset($ctimes[$pid]); |
56 | ||
8ccaff02 | 57 | } |
e9338405 | 58 | } else { |
8ccaff02 | 59 | _debug("[reap_children] child $pid reaped."); |
c90a028c | 60 | unset($ctimes[$pid]); |
e9338405 AD |
61 | } |
62 | } | |
63 | ||
64 | $children = $tmp; | |
65 | ||
5a613536 AD |
66 | return count($tmp); |
67 | } | |
68 | ||
c90a028c AD |
69 | function check_ctimes() { |
70 | global $ctimes; | |
dbaa4e4a | 71 | |
c90a028c AD |
72 | foreach (array_keys($ctimes) as $pid) { |
73 | $started = $ctimes[$pid]; | |
74 | ||
75 | if (time() - $started > MAX_CHILD_RUNTIME) { | |
76 | _debug("[MASTER] child process $pid seems to be stuck, aborting..."); | |
0618b81c | 77 | posix_kill($pid, SIGKILL); |
c90a028c AD |
78 | } |
79 | } | |
5a613536 AD |
80 | } |
81 | ||
82 | function sigchld_handler($signal) { | |
83 | $running_jobs = reap_children(); | |
e9338405 AD |
84 | |
85 | _debug("[SIGCHLD] jobs left: $running_jobs"); | |
5a613536 | 86 | |
02008cb1 AD |
87 | pcntl_waitpid(-1, $status, WNOHANG); |
88 | } | |
89 | ||
cfe6d444 AD |
90 | function shutdown($caller_pid) { |
91 | if ($caller_pid == posix_getpid()) { | |
92 | if (file_exists(LOCK_DIRECTORY . "/update_daemon.lock")) { | |
93 | _debug("removing lockfile (master)..."); | |
94 | unlink(LOCK_DIRECTORY . "/update_daemon.lock"); | |
95 | } | |
2cd099f0 | 96 | } |
8ccaff02 AD |
97 | } |
98 | ||
99 | function task_shutdown() { | |
100 | $pid = posix_getpid(); | |
101 | ||
2cd099f0 AD |
102 | if (file_exists(LOCK_DIRECTORY . "/update_daemon-$pid.lock")) { |
103 | _debug("removing lockfile ($pid)..."); | |
8ccaff02 | 104 | unlink(LOCK_DIRECTORY . "/update_daemon-$pid.lock"); |
2cd099f0 | 105 | } |
8ccaff02 AD |
106 | } |
107 | ||
6a69e61f | 108 | function sigint_handler() { |
2cd099f0 | 109 | _debug("[MASTER] SIG_INT received.\n"); |
cfe6d444 | 110 | shutdown(posix_getpid()); |
2cd099f0 | 111 | die; |
dbaa4e4a | 112 | } |
8ccaff02 AD |
113 | |
114 | function task_sigint_handler() { | |
2cd099f0 | 115 | _debug("[TASK] SIG_INT received.\n"); |
8ccaff02 | 116 | task_shutdown(); |
2cd099f0 | 117 | die; |
dbaa4e4a | 118 | } |
6a69e61f | 119 | |
02008cb1 | 120 | pcntl_signal(SIGCHLD, 'sigchld_handler'); |
6a69e61f | 121 | |
dc24b520 AD |
122 | $longopts = array("log:", |
123 | "tasks:", | |
ec25336d | 124 | "interval:", |
db985423 | 125 | "quiet", |
dc24b520 AD |
126 | "help"); |
127 | ||
128 | $options = getopt("", $longopts); | |
129 | ||
130 | if (isset($options["help"]) ) { | |
131 | print "Tiny Tiny RSS update daemon.\n\n"; | |
132 | print "Options:\n"; | |
133 | print " --log FILE - log messages to FILE\n"; | |
134 | print " --tasks N - amount of update tasks to spawn\n"; | |
135 | print " default: " . MAX_JOBS . "\n"; | |
136 | print " --interval N - task spawn interval\n"; | |
137 | print " default: " . SPAWN_INTERVAL . " seconds.\n"; | |
138 | print " --quiet - don't output messages to stdout\n"; | |
139 | return; | |
140 | } | |
141 | ||
142 | define('QUIET', isset($options['quiet'])); | |
143 | ||
144 | if (isset($options["tasks"])) { | |
145 | _debug("Set to spawn " . $options["tasks"] . " children."); | |
ec25336d | 146 | $max_jobs = $options["tasks"]; |
dc24b520 AD |
147 | } else { |
148 | $max_jobs = MAX_JOBS; | |
149 | } | |
150 | ||
151 | if (isset($options["interval"])) { | |
152 | _debug("Spawn interval: " . $options["interval"] . " seconds."); | |
ec25336d | 153 | $spawn_interval = $options["interval"]; |
dc24b520 AD |
154 | } else { |
155 | $spawn_interval = SPAWN_INTERVAL; | |
156 | } | |
157 | ||
158 | if (isset($options["log"])) { | |
159 | _debug("Logging to " . $options["log"]); | |
160 | define('LOGFILE', $options["log"]); | |
161 | } | |
162 | ||
884c0a36 AD |
163 | if (file_is_locked("update_daemon.lock")) { |
164 | die("error: Can't create lockfile. ". | |
6a69e61f AD |
165 | "Maybe another daemon is already running.\n"); |
166 | } | |
02008cb1 | 167 | |
1a43a68c AD |
168 | // Try to lock a file in order to avoid concurrent update. |
169 | $lock_handle = make_lockfile("update_daemon.lock"); | |
170 | ||
171 | if (!$lock_handle) { | |
172 | die("error: Can't create lockfile. ". | |
173 | "Maybe another daemon is already running.\n"); | |
174 | } | |
175 | ||
6322ac79 | 176 | init_plugins(); |
ffa7cbae | 177 | |
6322ac79 | 178 | $schema_version = get_schema_version(); |
4c2da349 | 179 | |
857efe49 AD |
180 | if ($schema_version != SCHEMA_VERSION) { |
181 | die("Schema version is wrong, please upgrade the database.\n"); | |
182 | } | |
183 | ||
02008cb1 AD |
184 | while (true) { |
185 | ||
45004d43 | 186 | // Since sleep is interupted by SIGCHLD, we need another way to |
dc24b520 AD |
187 | // respect the spawn interval |
188 | $next_spawn = $last_checkpoint + $spawn_interval - time(); | |
02008cb1 | 189 | |
61aa7499 | 190 | if ($next_spawn % 60 == 0) { |
e9338405 AD |
191 | $running_jobs = count($children); |
192 | _debug("[MASTER] active jobs: $running_jobs, next spawn at $next_spawn sec."); | |
ce1aa9b7 | 193 | } |
02008cb1 | 194 | |
dc24b520 | 195 | if ($last_checkpoint + $spawn_interval < time()) { |
02008cb1 | 196 | |
4c2da349 AD |
197 | /* Check if schema version changed */ |
198 | ||
6322ac79 | 199 | $test_schema_version = get_schema_version(); |
4c2da349 AD |
200 | |
201 | if ($test_schema_version != $schema_version) { | |
f0e015c4 AD |
202 | echo "Expected schema version: $schema_version, got: $test_schema_version\n"; |
203 | echo "Schema version changed while we were running, bailing out\n"; | |
4c2da349 AD |
204 | exit(100); |
205 | } | |
206 | ||
c90a028c | 207 | check_ctimes(); |
5a613536 AD |
208 | reap_children(); |
209 | ||
dc24b520 | 210 | for ($j = count($children); $j < $max_jobs; $j++) { |
02008cb1 AD |
211 | $pid = pcntl_fork(); |
212 | if ($pid == -1) { | |
213 | die("fork failed!\n"); | |
214 | } else if ($pid) { | |
724b7942 AD |
215 | |
216 | if (!$master_handlers_installed) { | |
217 | _debug("[MASTER] installing shutdown handlers"); | |
218 | pcntl_signal(SIGINT, 'sigint_handler'); | |
cfe6d444 | 219 | register_shutdown_function('shutdown', posix_getpid()); |
724b7942 AD |
220 | $master_handlers_installed = true; |
221 | } | |
222 | ||
e9338405 AD |
223 | _debug("[MASTER] spawned client $j [PID:$pid]..."); |
224 | array_push($children, $pid); | |
c90a028c | 225 | $ctimes[$pid] = time(); |
02008cb1 AD |
226 | } else { |
227 | pcntl_signal(SIGCHLD, SIG_IGN); | |
8ccaff02 AD |
228 | pcntl_signal(SIGINT, 'task_sigint_handler'); |
229 | ||
230 | register_shutdown_function('task_shutdown'); | |
231 | ||
7440a7fe | 232 | $quiet = (isset($options["quiet"])) ? "--quiet" : ""; |
8292d05b | 233 | |
7440a7fe | 234 | $my_pid = posix_getpid(); |
dbaa4e4a | 235 | |
7440a7fe | 236 | passthru(PHP_EXECUTABLE . " update.php --daemon-loop $quiet --task $j --pidlock $my_pid"); |
a26f0c17 | 237 | |
ffa7cbae | 238 | sleep(1); |
8ccaff02 | 239 | |
ffa7cbae | 240 | // We exit in order to avoid fork bombing. |
02008cb1 AD |
241 | exit(0); |
242 | } | |
243 | } | |
244 | $last_checkpoint = time(); | |
245 | } | |
246 | sleep(1); | |
247 | } | |
248 | ||
249 | ?> |