]>
git.wh0rd.org - tt-rss.git/blob - update_daemon2.php
3 set_include_path(get_include_path() . PATH_SEPARATOR
.
4 dirname(__FILE__
) . "/include");
6 // This is an experimental multiprocess update daemon.
7 // Some configurable variable may be found below.
10 chdir(dirname(__FILE__
));
12 define('DISABLE_SESSIONS', true);
14 require_once "version.php";
16 if (strpos(VERSION
, ".99") !== false ||
getenv('DAEMON_XDEBUG')) {
17 define('DAEMON_EXTENDED_DEBUG', true);
20 define('PURGE_INTERVAL', 3600); // seconds
21 define('MAX_CHILD_RUNTIME', 600); // seconds
23 require_once "functions.php";
24 require_once "rssfuncs.php";
25 require_once "sanity_check.php";
26 require_once "config.php";
27 require_once "db.php";
28 require_once "db-prefs.php";
29 require_once "lib/magpierss/rss_fetch.inc";
31 define('MAX_JOBS', 2);
32 define('SPAWN_INTERVAL', DAEMON_SLEEP_INTERVAL
);
34 if (!function_exists('pcntl_fork')) {
35 die("error: This script requires PHP compiled with PCNTL module.\n");
41 $last_checkpoint = -1;
43 function reap_children() {
49 foreach ($children as $pid) {
50 if (pcntl_waitpid($pid, $status, WNOHANG
) != $pid) {
52 if (file_is_locked("update_daemon-$pid.lock")) {
53 array_push($tmp, $pid);
55 _debug("[reap_children] child $pid seems active but lockfile is unlocked.");
60 _debug("[reap_children] child $pid reaped.");
70 function check_ctimes() {
73 foreach (array_keys($ctimes) as $pid) {
74 $started = $ctimes[$pid];
76 if (time() - $started > MAX_CHILD_RUNTIME
) {
77 _debug("[MASTER] child process $pid seems to be stuck, aborting...");
78 posix_kill($pid, SIGKILL
);
83 function sigchld_handler($signal) {
84 $running_jobs = reap_children();
86 _debug("[SIGCHLD] jobs left: $running_jobs");
88 pcntl_waitpid(-1, $status, WNOHANG
);
92 if (file_exists(LOCK_DIRECTORY
. "/update_daemon.lock"))
93 unlink(LOCK_DIRECTORY
. "/update_daemon.lock");
96 function task_shutdown() {
97 $pid = posix_getpid();
99 if (file_exists(LOCK_DIRECTORY
. "/update_daemon-$pid.lock"))
100 unlink(LOCK_DIRECTORY
. "/update_daemon-$pid.lock");
103 function sigint_handler() {
105 die("[SIGINT] removing lockfile and exiting.\n");
108 function task_sigint_handler() {
110 die("[SIGINT] removing lockfile and exiting.\n");
113 pcntl_signal(SIGCHLD
, 'sigchld_handler');
115 if (file_is_locked("update_daemon.lock")) {
116 die("error: Can't create lockfile. ".
117 "Maybe another daemon is already running.\n");
121 pcntl_signal(SIGINT
, 'sigint_handler');
122 register_shutdown_function('shutdown');
124 // Try to lock a file in order to avoid concurrent update.
125 $lock_handle = make_lockfile("update_daemon.lock");
128 die("error: Can't create lockfile. ".
129 "Maybe another daemon is already running.\n");
132 while (true) { sleep(100); }
135 // Testing database connection.
136 // It is unnecessary to start the fork loop if database is not ok.
137 $link = db_connect(DB_HOST
, DB_USER
, DB_PASS
, DB_NAME
);
139 if (!init_connection($link)) return;
145 // Since sleep is interupted by SIGCHLD, we need another way to
146 // respect the SPAWN_INTERVAL
147 $next_spawn = $last_checkpoint + SPAWN_INTERVAL
- time();
149 if ($next_spawn %
10 == 0) {
150 $running_jobs = count($children);
151 _debug("[MASTER] active jobs: $running_jobs, next spawn at $next_spawn sec.");
154 if ($last_checkpoint + SPAWN_INTERVAL
< time()) {
159 for ($j = count($children); $j < MAX_JOBS
; $j++
) {
162 die("fork failed!\n");
164 _debug("[MASTER] spawned client $j [PID:$pid]...");
165 array_push($children, $pid);
166 $ctimes[$pid] = time();
168 pcntl_signal(SIGCHLD
, SIG_IGN
);
169 pcntl_signal(SIGINT
, 'task_sigint_handler');
171 register_shutdown_function('task_shutdown');
173 $my_pid = posix_getpid();
174 $lock_filename = "update_daemon-$my_pid.lock";
176 $lock_handle = make_lockfile($lock_filename);
179 die("error: Can't create lockfile ($lock_filename). ".
180 "Maybe another daemon is already running.\n");
183 // ****** Updating RSS code *******
184 // Only run in fork process.
186 $start_timestamp = time();
188 $link = db_connect(DB_HOST
, DB_USER
, DB_PASS
, DB_NAME
);
190 if (!init_connection($link)) return;
192 // We disable stamp file, since it is of no use in a multiprocess update.
193 // not really, tho for the time being -fox
194 if (!make_stampfile('update_daemon.stamp')) {
195 print "warning: unable to create stampfile";
198 // Call to the feed batch update function
199 // or regenerate feedbrowser cache
201 if (rand(0,100) > 30) {
202 update_daemon_common($link);
204 $count = update_feedbrowser_cache($link);
205 _debug("Feedbrowser updated, $count feeds processed.");
207 purge_orphans($link, true);
209 $rc = cleanup_tags($link, 14, 50000);
211 _debug("Cleaned $rc cached tags.");
213 _debug("Updating linked feeds...");
214 get_linked_feeds($link);
218 _debug("Elapsed time: " . (time() - $start_timestamp) . " second(s)");
223 // We wait a little before exiting to avoid to be faster than our parent process.
226 unlink(LOCK_DIRECTORY
. "/$lock_filename");
228 // We exit in order to avoid fork bombing.
232 // We wait a little time before the next fork, in order to let the first fork
233 // mark the feeds it update :
236 $last_checkpoint = time();