-#!/usr/bin/php
+#!/usr/bin/env php
<?php
- // This is an experimental multiprocess update daemon
- // It consists of the master server (this file) and
- // client batch script (update_daemon2_client.php) which
- // should only be run by the server process
+ set_include_path(dirname(__FILE__) ."/include" . PATH_SEPARATOR .
+ get_include_path());
declare(ticks = 1);
+ chdir(dirname(__FILE__));
- require "config.php";
+ define('DISABLE_SESSIONS', true);
+ require_once "version.php";
+
+ if (strpos(VERSION, ".99") !== false || getenv('DAEMON_XDEBUG')) {
+ define('DAEMON_EXTENDED_DEBUG', true);
+ }
+
+ require_once "autoload.php";
+ require_once "functions.php";
+ require_once "rssfuncs.php";
+ require_once "sanity_check.php";
+ require_once "config.php";
+ require_once "db.php";
+ require_once "db-prefs.php";
+ require_once "errorhandler.php";
+
+ // defaults
+ define('PURGE_INTERVAL', 3600); // seconds
+ define('MAX_CHILD_RUNTIME', 600); // seconds
define('MAX_JOBS', 2);
- define('CLIENT_PROCESS', './update_daemon2_client.php SRV_RUN_OK');
- define('SPAWN_INTERVAL', DAEMON_SLEEP_INTERVAL);
+ define('SPAWN_INTERVAL', DAEMON_SLEEP_INTERVAL); // seconds
+
+ if (!function_exists('pcntl_fork')) {
+ die("error: This script requires PHP compiled with PCNTL module.\n");
+ }
+
+ $master_handlers_installed = false;
+
+ $children = array();
+ $ctimes = array();
- $running_jobs = 0;
$last_checkpoint = -1;
+ function reap_children() {
+ global $children;
+ global $ctimes;
+
+ $tmp = array();
+
+ foreach ($children as $pid) {
+ if (pcntl_waitpid($pid, $status, WNOHANG) != $pid) {
+
+ if (file_is_locked("update_daemon-$pid.lock")) {
+ array_push($tmp, $pid);
+ } else {
+ _debug("[reap_children] child $pid seems active but lockfile is unlocked.");
+ unset($ctimes[$pid]);
+
+ }
+ } else {
+ _debug("[reap_children] child $pid reaped.");
+ unset($ctimes[$pid]);
+ }
+ }
+
+ $children = $tmp;
+
+ return count($tmp);
+ }
+
+ function check_ctimes() {
+ global $ctimes;
+
+ foreach (array_keys($ctimes) as $pid) {
+ $started = $ctimes[$pid];
+
+ if (time() - $started > MAX_CHILD_RUNTIME) {
+ _debug("[MASTER] child process $pid seems to be stuck, aborting...");
+ posix_kill($pid, SIGKILL);
+ }
+ }
+ }
+
function sigchld_handler($signal) {
- global $running_jobs;
- if ($running_jobs > 0) $running_jobs--;
- print posix_getpid() . ": SIGCHLD received, jobs left: $running_jobs\n";
+ $running_jobs = reap_children();
+
+ _debug("[SIGCHLD] jobs left: $running_jobs");
+
pcntl_waitpid(-1, $status, WNOHANG);
}
+ function shutdown($caller_pid) {
+ if ($caller_pid == posix_getpid()) {
+ if (file_exists(LOCK_DIRECTORY . "/update_daemon.lock")) {
+ _debug("removing lockfile (master)...");
+ unlink(LOCK_DIRECTORY . "/update_daemon.lock");
+ }
+ }
+ }
+
+ function task_shutdown() {
+ $pid = posix_getpid();
+
+ if (file_exists(LOCK_DIRECTORY . "/update_daemon-$pid.lock")) {
+ _debug("removing lockfile ($pid)...");
+ unlink(LOCK_DIRECTORY . "/update_daemon-$pid.lock");
+ }
+ }
+
+ function sigint_handler() {
+ _debug("[MASTER] SIG_INT received.\n");
+ shutdown(posix_getpid());
+ die;
+ }
+
+ function task_sigint_handler() {
+ _debug("[TASK] SIG_INT received.\n");
+ task_shutdown();
+ die;
+ }
+
pcntl_signal(SIGCHLD, 'sigchld_handler');
+ $longopts = array("log:",
+ "tasks:",
+ "interval:",
+ "quiet",
+ "help");
+
+ $options = getopt("", $longopts);
+
+ if (isset($options["help"]) ) {
+ print "Tiny Tiny RSS update daemon.\n\n";
+ print "Options:\n";
+ print " --log FILE - log messages to FILE\n";
+ print " --tasks N - amount of update tasks to spawn\n";
+ print " default: " . MAX_JOBS . "\n";
+ print " --interval N - task spawn interval\n";
+ print " default: " . SPAWN_INTERVAL . " seconds.\n";
+ print " --quiet - don't output messages to stdout\n";
+ return;
+ }
+
+ define('QUIET', isset($options['quiet']));
+
+ if (isset($options["tasks"])) {
+ _debug("Set to spawn " . $options["tasks"] . " children.");
+ $max_jobs = $options["tasks"];
+ } else {
+ $max_jobs = MAX_JOBS;
+ }
+
+ if (isset($options["interval"])) {
+ _debug("Spawn interval: " . $options["interval"] . " seconds.");
+ $spawn_interval = $options["interval"];
+ } else {
+ $spawn_interval = SPAWN_INTERVAL;
+ }
+
+ if (isset($options["log"])) {
+ _debug("Logging to " . $options["log"]);
+ define('LOGFILE', $options["log"]);
+ }
+
+ if (file_is_locked("update_daemon.lock")) {
+ die("error: Can't create lockfile. ".
+ "Maybe another daemon is already running.\n");
+ }
+
+ // Try to lock a file in order to avoid concurrent update.
+ $lock_handle = make_lockfile("update_daemon.lock");
+
+ if (!$lock_handle) {
+ die("error: Can't create lockfile. ".
+ "Maybe another daemon is already running.\n");
+ }
+
+ // Testing database connection.
+ // It is unnecessary to start the fork loop if database is not ok.
+ $link = db_connect(DB_HOST, DB_USER, DB_PASS, DB_NAME);
+
+ if (!init_plugins($link)) die("Can't initialize db connection.\n");
+
+ $schema_version = get_schema_version($link);
+
+ db_close($link);
+
+ if ($schema_version != SCHEMA_VERSION) {
+ die("Schema version is wrong, please upgrade the database.\n");
+ }
+
while (true) {
- $next_spawn = $last_checkpoint + SPAWN_INTERVAL - time();
+ // Since sleep is interupted by SIGCHLD, we need another way to
+ // respect the spawn interval
+ $next_spawn = $last_checkpoint + $spawn_interval - time();
+
+ if ($next_spawn % 60 == 0) {
+ $running_jobs = count($children);
+ _debug("[MASTER] active jobs: $running_jobs, next spawn at $next_spawn sec.");
+ }
+
+ if ($last_checkpoint + $spawn_interval < time()) {
- print "[MASTER] active jobs: $running_jobs, next spawn at $next_spawn sec\n";
+ /* Check if schema version changed */
- if ($last_checkpoint + SPAWN_INTERVAL < time()) {
+ $link = db_connect(DB_HOST, DB_USER, DB_PASS, DB_NAME);
+ if (!init_plugins($link)) die("Can't initialize db connection.\n");
+ $test_schema_version = get_schema_version($link);
+ db_close($link);
- for ($j = $running_jobs; $j < MAX_JOBS; $j++) {
- print "[MASTER] spawning client $j...";
+ if ($test_schema_version != $schema_version) {
+ echo "Expected schema version: $schema_version, got: $test_schema_version\n";
+ echo "Schema version changed while we were running, bailing out\n";
+ exit(100);
+ }
+
+ check_ctimes();
+ reap_children();
+
+ for ($j = count($children); $j < $max_jobs; $j++) {
$pid = pcntl_fork();
if ($pid == -1) {
die("fork failed!\n");
} else if ($pid) {
- $running_jobs++;
- print "OK [$running_jobs]\n";
+
+ if (!$master_handlers_installed) {
+ _debug("[MASTER] installing shutdown handlers");
+ pcntl_signal(SIGINT, 'sigint_handler');
+ register_shutdown_function('shutdown', posix_getpid());
+ $master_handlers_installed = true;
+ }
+
+ _debug("[MASTER] spawned client $j [PID:$pid]...");
+ array_push($children, $pid);
+ $ctimes[$pid] = time();
} else {
pcntl_signal(SIGCHLD, SIG_IGN);
- passthru(CLIENT_PROCESS);
+ pcntl_signal(SIGINT, 'task_sigint_handler');
+
+ register_shutdown_function('task_shutdown');
+
+ $my_pid = posix_getpid();
+ $lock_filename = "update_daemon-$my_pid.lock";
+
+ $lock_handle = make_lockfile($lock_filename);
+
+ if (!$lock_handle) {
+ die("error: Can't create lockfile ($lock_filename). ".
+ "Maybe another daemon is already running.\n");
+ }
+
+ // ****** Updating RSS code *******
+ // Only run in fork process.
+
+ $start_timestamp = time();
+
+ $link = db_connect(DB_HOST, DB_USER, DB_PASS, DB_NAME);
+
+ if (!init_plugins($link)) return;
+
+ // We disable stamp file, since it is of no use in a multiprocess update.
+ // not really, tho for the time being -fox
+ if (!make_stampfile('update_daemon.stamp')) {
+ _debug("warning: unable to create stampfile\n");
+ }
+
+ // Call to the feed batch update function
+ // and maybe regenerate feedbrowser cache
+
+ $nf = 0;
+
+ _debug("Waiting before update [$j]..");
+ sleep($j*5);
+ $nf = update_daemon_common($link);
+
+ if (rand(0,100) > 50) {
+ $count = update_feedbrowser_cache($link);
+ _debug("Feedbrowser updated, $count feeds processed.");
+
+ purge_orphans($link, true);
+
+ $rc = cleanup_tags($link, 14, 50000);
+
+ _debug("Cleaned $rc cached tags.");
+
+ global $pluginhost;
+ $pluginhost->run_hooks($pluginhost::HOOK_UPDATE_TASK, "hook_update_task", $op);
+ }
+
+ _debug("Elapsed time: " . (time() - $start_timestamp) . " second(s)");
+
+ if ($nf > 0) {
+ _debug("Feeds processed: $nf");
+
+ if (time() - $start_timestamp > 0) {
+ _debug("Feeds/minute: " . sprintf("%.2d", $nf/((time()-$start_timestamp)/60)));
+ }
+ }
+
+ db_close($link);
+
+ // We are in a fork.
+ // We wait a little before exiting to avoid to be faster than our parent process.
+ sleep(1);
+
+ unlink(LOCK_DIRECTORY . "/$lock_filename");
+
+ // We exit in order to avoid fork bombing.
exit(0);
}
}
git.wh0rd.org / tt-rss.git / blobdiff