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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 | 11 | require_once "version.php"; |
404e2e36 | 12 | require_once "autoload.php"; |
9765e8b9 | 13 | require_once "functions.php"; |
bd8ae98b | 14 | require_once "config.php"; |
0e6bdaef AD |
15 | |
16 | // defaults | |
17 | define_default('PURGE_INTERVAL', 3600); // seconds | |
f90728cd | 18 | define_default('MAX_CHILD_RUNTIME', 1800); // seconds |
0e6bdaef AD |
19 | define_default('MAX_JOBS', 2); |
20 | define_default('SPAWN_INTERVAL', DAEMON_SLEEP_INTERVAL); // seconds | |
0e6bdaef | 21 | |
ffa7cbae | 22 | require_once "sanity_check.php"; |
5893edd5 AD |
23 | require_once "db.php"; |
24 | require_once "db-prefs.php"; | |
ffa7cbae | 25 | |
16956646 AD |
26 | if (!function_exists('pcntl_fork')) { |
27 | die("error: This script requires PHP compiled with PCNTL module.\n"); | |
28 | } | |
29 | ||
45ce1610 AD |
30 | $options = getopt(""); |
31 | ||
6f61ba46 AD |
32 | if (!is_array($options)) { |
33 | die("error: getopt() failed. ". | |
34 | "Most probably you are using PHP CGI to run this script ". | |
35 | "instead of required PHP CLI. Check tt-rss wiki page on updating feeds for ". | |
36 | "additional information.\n"); | |
37 | } | |
38 | ||
45ce1610 | 39 | |
0f906745 AD |
40 | $master_handlers_installed = false; |
41 | ||
e9338405 | 42 | $children = array(); |
c90a028c | 43 | $ctimes = array(); |
e9338405 | 44 | |
02008cb1 AD |
45 | $last_checkpoint = -1; |
46 | ||
e552bb0b AD |
47 | /** |
48 | * @SuppressWarnings(unused) | |
49 | */ | |
5a613536 | 50 | function reap_children() { |
e9338405 | 51 | global $children; |
51ddf0f8 | 52 | global $ctimes; |
e9338405 AD |
53 | |
54 | $tmp = array(); | |
55 | ||
56 | foreach ($children as $pid) { | |
57 | if (pcntl_waitpid($pid, $status, WNOHANG) != $pid) { | |
7aabaa09 AD |
58 | |
59 | if (file_is_locked("update_daemon-$pid.lock")) { | |
8ccaff02 AD |
60 | array_push($tmp, $pid); |
61 | } else { | |
62 | _debug("[reap_children] child $pid seems active but lockfile is unlocked."); | |
125ab8db AD |
63 | unset($ctimes[$pid]); |
64 | ||
8ccaff02 | 65 | } |
e9338405 | 66 | } else { |
8ccaff02 | 67 | _debug("[reap_children] child $pid reaped."); |
c90a028c | 68 | unset($ctimes[$pid]); |
e9338405 AD |
69 | } |
70 | } | |
71 | ||
72 | $children = $tmp; | |
73 | ||
5a613536 AD |
74 | return count($tmp); |
75 | } | |
76 | ||
c90a028c AD |
77 | function check_ctimes() { |
78 | global $ctimes; | |
dbaa4e4a | 79 | |
c90a028c AD |
80 | foreach (array_keys($ctimes) as $pid) { |
81 | $started = $ctimes[$pid]; | |
82 | ||
83 | if (time() - $started > MAX_CHILD_RUNTIME) { | |
84 | _debug("[MASTER] child process $pid seems to be stuck, aborting..."); | |
0618b81c | 85 | posix_kill($pid, SIGKILL); |
c90a028c AD |
86 | } |
87 | } | |
5a613536 AD |
88 | } |
89 | ||
e552bb0b AD |
90 | /** |
91 | * @SuppressWarnings(unused) | |
92 | */ | |
5a613536 AD |
93 | function sigchld_handler($signal) { |
94 | $running_jobs = reap_children(); | |
e9338405 AD |
95 | |
96 | _debug("[SIGCHLD] jobs left: $running_jobs"); | |
5a613536 | 97 | |
02008cb1 AD |
98 | pcntl_waitpid(-1, $status, WNOHANG); |
99 | } | |
100 | ||
0f906745 AD |
101 | function shutdown($caller_pid) { |
102 | if ($caller_pid == posix_getpid()) { | |
103 | if (file_exists(LOCK_DIRECTORY . "/update_daemon.lock")) { | |
104 | _debug("removing lockfile (master)..."); | |
105 | unlink(LOCK_DIRECTORY . "/update_daemon.lock"); | |
106 | } | |
107 | } | |
108 | } | |
109 | ||
110 | function task_shutdown() { | |
111 | $pid = posix_getpid(); | |
112 | ||
113 | if (file_exists(LOCK_DIRECTORY . "/update_daemon-$pid.lock")) { | |
114 | _debug("removing lockfile ($pid)..."); | |
115 | unlink(LOCK_DIRECTORY . "/update_daemon-$pid.lock"); | |
116 | } | |
117 | } | |
118 | ||
119 | function sigint_handler() { | |
120 | _debug("[MASTER] SIG_INT received.\n"); | |
121 | shutdown(posix_getpid()); | |
122 | die; | |
123 | } | |
124 | ||
125 | function task_sigint_handler() { | |
126 | _debug("[TASK] SIG_INT received.\n"); | |
127 | task_shutdown(); | |
128 | die; | |
129 | } | |
130 | ||
02008cb1 | 131 | pcntl_signal(SIGCHLD, 'sigchld_handler'); |
6a69e61f | 132 | |
dc24b520 AD |
133 | $longopts = array("log:", |
134 | "tasks:", | |
ec25336d | 135 | "interval:", |
db985423 | 136 | "quiet", |
dc24b520 AD |
137 | "help"); |
138 | ||
139 | $options = getopt("", $longopts); | |
140 | ||
141 | if (isset($options["help"]) ) { | |
142 | print "Tiny Tiny RSS update daemon.\n\n"; | |
143 | print "Options:\n"; | |
144 | print " --log FILE - log messages to FILE\n"; | |
145 | print " --tasks N - amount of update tasks to spawn\n"; | |
146 | print " default: " . MAX_JOBS . "\n"; | |
147 | print " --interval N - task spawn interval\n"; | |
148 | print " default: " . SPAWN_INTERVAL . " seconds.\n"; | |
149 | print " --quiet - don't output messages to stdout\n"; | |
150 | return; | |
151 | } | |
152 | ||
153 | define('QUIET', isset($options['quiet'])); | |
154 | ||
155 | if (isset($options["tasks"])) { | |
156 | _debug("Set to spawn " . $options["tasks"] . " children."); | |
ec25336d | 157 | $max_jobs = $options["tasks"]; |
dc24b520 AD |
158 | } else { |
159 | $max_jobs = MAX_JOBS; | |
160 | } | |
161 | ||
162 | if (isset($options["interval"])) { | |
163 | _debug("Spawn interval: " . $options["interval"] . " seconds."); | |
ec25336d | 164 | $spawn_interval = $options["interval"]; |
dc24b520 AD |
165 | } else { |
166 | $spawn_interval = SPAWN_INTERVAL; | |
167 | } | |
168 | ||
4fd07908 AD |
169 | // let's enforce a minimum spawn interval as to not forkbomb the host |
170 | $spawn_interval = max(60, $spawn_interval); | |
171 | _debug("Spawn interval: $spawn_interval sec"); | |
172 | ||
dc24b520 AD |
173 | if (isset($options["log"])) { |
174 | _debug("Logging to " . $options["log"]); | |
175 | define('LOGFILE', $options["log"]); | |
176 | } | |
177 | ||
884c0a36 AD |
178 | if (file_is_locked("update_daemon.lock")) { |
179 | die("error: Can't create lockfile. ". | |
6a69e61f AD |
180 | "Maybe another daemon is already running.\n"); |
181 | } | |
02008cb1 | 182 | |
1a43a68c AD |
183 | // Try to lock a file in order to avoid concurrent update. |
184 | $lock_handle = make_lockfile("update_daemon.lock"); | |
185 | ||
186 | if (!$lock_handle) { | |
187 | die("error: Can't create lockfile. ". | |
188 | "Maybe another daemon is already running.\n"); | |
189 | } | |
190 | ||
6322ac79 | 191 | $schema_version = get_schema_version(); |
4c2da349 | 192 | |
857efe49 AD |
193 | if ($schema_version != SCHEMA_VERSION) { |
194 | die("Schema version is wrong, please upgrade the database.\n"); | |
195 | } | |
196 | ||
e2cf81e2 AD |
197 | // Protip: children close shared database handle when terminating, it's a bad idea to |
198 | // do database stuff on main process from now on. | |
199 | ||
02008cb1 AD |
200 | while (true) { |
201 | ||
45004d43 | 202 | // Since sleep is interupted by SIGCHLD, we need another way to |
dc24b520 AD |
203 | // respect the spawn interval |
204 | $next_spawn = $last_checkpoint + $spawn_interval - time(); | |
02008cb1 | 205 | |
61aa7499 | 206 | if ($next_spawn % 60 == 0) { |
e9338405 AD |
207 | $running_jobs = count($children); |
208 | _debug("[MASTER] active jobs: $running_jobs, next spawn at $next_spawn sec."); | |
ce1aa9b7 | 209 | } |
02008cb1 | 210 | |
dc24b520 | 211 | if ($last_checkpoint + $spawn_interval < time()) { |
c90a028c | 212 | check_ctimes(); |
5a613536 AD |
213 | reap_children(); |
214 | ||
dc24b520 | 215 | for ($j = count($children); $j < $max_jobs; $j++) { |
02008cb1 AD |
216 | $pid = pcntl_fork(); |
217 | if ($pid == -1) { | |
218 | die("fork failed!\n"); | |
219 | } else if ($pid) { | |
0f906745 AD |
220 | |
221 | if (!$master_handlers_installed) { | |
222 | _debug("[MASTER] installing shutdown handlers"); | |
223 | pcntl_signal(SIGINT, 'sigint_handler'); | |
224 | pcntl_signal(SIGTERM, 'sigint_handler'); | |
225 | register_shutdown_function('shutdown', posix_getpid()); | |
226 | $master_handlers_installed = true; | |
227 | } | |
228 | ||
e9338405 AD |
229 | _debug("[MASTER] spawned client $j [PID:$pid]..."); |
230 | array_push($children, $pid); | |
c90a028c | 231 | $ctimes[$pid] = time(); |
02008cb1 AD |
232 | } else { |
233 | pcntl_signal(SIGCHLD, SIG_IGN); | |
0f906745 AD |
234 | pcntl_signal(SIGINT, 'task_sigint_handler'); |
235 | ||
236 | register_shutdown_function('task_shutdown'); | |
8ccaff02 | 237 | |
7440a7fe | 238 | $quiet = (isset($options["quiet"])) ? "--quiet" : ""; |
a33558a6 | 239 | $log = function_exists("flock") && isset($options['log']) ? '--log '.$options['log'] : ''; |
8292d05b | 240 | |
7440a7fe | 241 | $my_pid = posix_getpid(); |
dbaa4e4a | 242 | |
a33558a6 | 243 | passthru(PHP_EXECUTABLE . " update.php --daemon-loop $quiet $log --task $j --pidlock $my_pid"); |
a26f0c17 | 244 | |
ffa7cbae | 245 | sleep(1); |
8ccaff02 | 246 | |
ffa7cbae | 247 | // We exit in order to avoid fork bombing. |
02008cb1 AD |
248 | exit(0); |
249 | } | |
250 | } | |
251 | $last_checkpoint = time(); | |
252 | } | |
253 | sleep(1); | |
254 | } | |
255 | ||
256 | ?> |