initial work on update daemon

[tt-rss.git] / update_daemon.php

#!/usr/bin/php4
<?
	// this daemon runs in the background and updates all feeds
	// continuously

	define('SLEEP_INTERVAL', 30); // seconds

	// TODO: allow update scheduling from users

	define('MAGPIE_CACHE_DIR', '/var/tmp/magpie-ttrss-cache-daemon');

	define('DISABLE_SESSIONS', true);

	require_once "sanity_check.php";
	require_once "config.php";
	require_once "db.php";
	require_once "db-prefs.php";
	require_once "functions.php";
	require_once "magpierss/rss_fetch.inc";

	$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;
	}

	if (DB_TYPE == "pgsql") {
		pg_query("set client_encoding = 'utf-8'");
	}

	$result = db_query($link, "SELECT feed_url,id,owner_uid,
		SUBSTRING(last_updated,1,19) AS last_updated,
		update_interval FROM ttrss_feeds ORDER BY last_updated DESC");

	while ($line = db_fetch_assoc($result)) {

		print "Checking feed: " . $line["feed_url"] . "\n";

		$upd_intl = $line["update_interval"];

		$user_id = $line["owner_uid"];

		if (!$upd_intl || $upd_intl == 0) {
			$upd_intl = get_pref($link, 'DEFAULT_UPDATE_INTERVAL', $user_id);
		}

		if ($fetch || (!$line["last_updated"] || 
			time() - strtotime($line["last_updated"]) > ($upd_intl * 60))) {

			print "Updating...\n";

			update_rss_feed($link, $line["feed_url"], $line["id"], true);

		}
	}

	sleep(SLEEP_INTERVAL);

	db_close($link);

?>