tt-rss/update_daemon_loop.php

#!/usr/bin/php
<?php
	// this daemon runs in the background and updates all feeds
	// continuously

	if ($argv[1] != "SRV_RUN_OK") {
		die("This script should be run by update_daemon.php\n");
	}

	// define('DEFAULT_ERROR_LEVEL', E_ALL);
	define('DEFAULT_ERROR_LEVEL', E_ERROR | E_WARNING | E_PARSE);

	declare(ticks = 1);

	define('MAGPIE_CACHE_DIR', '/var/tmp/magpie-ttrss-cache-daemon');
	define('SIMPLEPIE_CACHE_DIR',	'/var/tmp/simplepie-ttrss-cache-daemon');
	define('DISABLE_SESSIONS', true);

	require_once "version.php";

	if (strpos(VERSION, ".99") !== false) {
		define('DAEMON_EXTENDED_DEBUG', true);
	}

	define('PURGE_INTERVAL', 3600); // seconds

	require_once "sanity_check.php";
	require_once "config.php";

	if (!ENABLE_UPDATE_DAEMON) {
		die("Please enable option ENABLE_UPDATE_DAEMON in config.php\n");
	}
	
	require_once "db.php";
	require_once "db-prefs.php";
	require_once "functions.php";
	require_once "magpierss/rss_fetch.inc";

	error_reporting(DEFAULT_ERROR_LEVEL);

	function sigalrm_handler() {
		die("received SIGALRM, hang in feed update?\n");
	}

	pcntl_signal(SIGALRM, sigalrm_handler);

	$link = db_connect(DB_HOST, DB_USER, DB_PASS, DB_NAME);	

	if (!$link) {
		if (DB_TYPE == "mysql") {
			print mysql_error();
		}
		// PG seems to display its own errors just fine by default.		
		return;
	}

	init_connection($link);

	$last_purge = 0;

	if (!make_stampfile('update_daemon.stamp')) {
		print "error: unable to create stampfile";
		die;
	}

	if (time() - $last_purge > PURGE_INTERVAL) {
		_debug("Purging old posts (random 30 feeds)...");
		global_purge_old_posts($link, true, 30);
		$last_purge = time();
	}

	// Call to the feed batch update function 
	// or regenerate feedbrowser cache

	if (rand(0,100) > 50) {
		update_daemon_common($link);
	} else {
		$count = update_feedbrowser_cache($link);
		_debug("Finished, $count feeds processed.");
	}


	db_close($link);

?>