3 // This is an experimental multiprocess update daemon.
4 // Some configurable variable may be found below.
6 // define('DEFAULT_ERROR_LEVEL', E_ALL);
7 define('DEFAULT_ERROR_LEVEL', E_ERROR | E_WARNING | E_PARSE
);
11 define('MAGPIE_CACHE_DIR', '/var/tmp/magpie-ttrss-cache-daemon');
12 define('SIMPLEPIE_CACHE_DIR', '/var/tmp/simplepie-ttrss-cache-daemon');
13 define('DISABLE_SESSIONS', true);
15 require_once "version.php";
17 if (strpos(VERSION
, ".99") !== false ||
getenv('DAEMON_XDEBUG')) {
18 define('DAEMON_EXTENDED_DEBUG', true);
21 define('PURGE_INTERVAL', 3600); // seconds
23 require_once "sanity_check.php";
24 require_once "config.php";
26 define('MAX_JOBS', 2);
28 define('SPAWN_INTERVAL', DAEMON_SLEEP_INTERVAL
);
30 if (!function_exists('pcntl_fork')) {
31 die("error: This script requires PHP compiled with PCNTL module.\n");
34 if (!ENABLE_UPDATE_DAEMON
) {
35 die("error: Please enable option ENABLE_UPDATE_DAEMON in config.php\n");
38 require_once "db.php";
39 require_once "db-prefs.php";
40 require_once "functions.php";
41 require_once "lib/magpierss/rss_fetch.inc";
43 error_reporting(DEFAULT_ERROR_LEVEL
);
47 $last_checkpoint = -1;
49 function reap_children() {
54 foreach ($children as $pid) {
55 if (pcntl_waitpid($pid, $status, WNOHANG
) != $pid) {
56 array_push($tmp, $pid);
58 _debug("[SIGCHLD] child $pid reaped.");
67 function sigalrm_handler() {
68 die("[SIGALRM] hang in feed update?\n");
71 function sigchld_handler($signal) {
72 $running_jobs = reap_children();
74 _debug("[SIGCHLD] jobs left: $running_jobs");
76 pcntl_waitpid(-1, $status, WNOHANG
);
79 function sigint_handler() {
80 unlink(LOCK_DIRECTORY
. "/update_daemon.lock");
81 die("[SIGINT] removing lockfile and exiting.\n");
84 pcntl_signal(SIGALRM
, 'sigalrm_handler');
85 pcntl_signal(SIGCHLD
, 'sigchld_handler');
87 if (file_is_locked("update_daemon.lock")) {
88 die("error: Can't create lockfile. ".
89 "Maybe another daemon is already running.\n");
93 pcntl_signal(SIGINT
, 'sigint_handler');
95 // Try to lock a file in order to avoid concurrent update.
96 $lock_handle = make_lockfile("update_daemon.lock");
99 die("error: Can't create lockfile. ".
100 "Maybe another daemon is already running.\n");
103 while (true) { sleep(100); }
106 // Testing database connection.
107 // It is unnecessary to start the fork loop if database is not ok.
108 $link = db_connect(DB_HOST
, DB_USER
, DB_PASS
, DB_NAME
);
111 if (DB_TYPE
== "mysql") {
114 // PG seems to display its own errors just fine by default.
122 // Since sleep is interupted by SIGCHLD, we need another way to
123 // respect the SPAWN_INTERVAL
124 $next_spawn = $last_checkpoint + SPAWN_INTERVAL
- time();
126 if ($next_spawn %
10 == 0) {
127 $running_jobs = count($children);
128 _debug("[MASTER] active jobs: $running_jobs, next spawn at $next_spawn sec.");
131 if ($last_checkpoint + SPAWN_INTERVAL
< time()) {
135 for ($j = count($children); $j < MAX_JOBS
; $j++
) {
138 die("fork failed!\n");
140 _debug("[MASTER] spawned client $j [PID:$pid]...");
141 array_push($children, $pid);
143 pcntl_signal(SIGCHLD
, SIG_IGN
);
144 pcntl_signal(SIGINT
, SIG_DFL
);
146 // ****** Updating RSS code *******
147 // Only run in fork process.
149 $start_timestamp = time();
151 $link = db_connect(DB_HOST
, DB_USER
, DB_PASS
, DB_NAME
);
154 if (DB_TYPE
== "mysql") {
157 // PG seems to display its own errors just fine by default.
161 init_connection($link);
163 // We disable stamp file, since it is of no use in a multiprocess update.
164 // not really, tho for the time being -fox
165 if (!make_stampfile('update_daemon.stamp')) {
166 print "warning: unable to create stampfile";
169 // FIXME : $last_purge is of no use in a multiprocess update.
170 // FIXME : We ALWAYS purge old posts.
171 //_debug("Purging old posts (random 30 feeds)...");
172 //global_purge_old_posts($link, true, 30);
174 // Call to the feed batch update function
175 // or regenerate feedbrowser cache
177 if (rand(0,100) > 50) {
178 update_daemon_common($link);
180 $count = update_feedbrowser_cache($link);
181 _debug("Finished, $count feeds processed.");
184 _debug("Elapsed time: " . (time() - $start_timestamp) . " second(s)");
189 // We wait a little before exiting to avoid to be faster than our parent process.
191 // We exit in order to avoid fork bombing.
195 // We wait a little time before the next fork, in order to let the first fork
196 // mark the feeds it update :
199 $last_checkpoint = time();