From de696427ad56edeb2dd982e41eda1e6e43e1062c Mon Sep 17 00:00:00 2001
From: Andrew Dolgov <fox@bah.spb.su>
Date: Sat, 11 Feb 2006 14:52:17 +0100
Subject: [PATCH] initial work on update daemon

---
 backend.php                   |  2 +-
 config.php-dist               |  6 +++-
 db-prefs.php                  | 10 +++---
 schema/ttrss_schema_mysql.sql |  9 ++++-
 schema/ttrss_schema_pgsql.sql |  7 +++-
 update_daemon.php             | 65 +++++++++++++++++++++++++++++++++++
 update_feeds.php              |  2 ++
 7 files changed, 93 insertions(+), 8 deletions(-)
 create mode 100644 update_daemon.php

diff --git a/backend.php b/backend.php
index 3ba723d2e..55f2fa99f 100644
--- a/backend.php
+++ b/backend.php
@@ -1,6 +1,6 @@
 <?
 	session_start();
-
+	
 	if ($_GET["debug"]) {
 		define('DEFAULT_ERROR_LEVEL', E_ALL);
 	} else {
diff --git a/config.php-dist b/config.php-dist
index 7326586b2..7a92c7423 100644
--- a/config.php-dist
+++ b/config.php-dist
@@ -82,6 +82,10 @@
 	// If this option is enabled (non-zero) feeds are updated in random order.
 	// It is also recommended to set FEEDS_FRAME_REFRESH to a lower value if using
 	// this option.
-	
+
+	define('DISABLE_SESSIONS', false);
+	// Disables sessions (this is ONLY useful for commandline daemons using
+	// tt-rss code, DON'T enable this option EVER)
+
 	// vim:ft=php
 ?>
diff --git a/db-prefs.php b/db-prefs.php
index 1b6262d9a..80d890fbc 100644
--- a/db-prefs.php
+++ b/db-prefs.php
@@ -2,10 +2,12 @@
 	require_once "config.php";
 	require_once "db.php";
 
-	session_start();
-
-	if (!$_SESSION["prefs_cache"])
-		$_SESSION["prefs_cache"] = array();
+	if (! DISABLE_SESSIONS) {	
+		session_start();
+		
+		if (!$_SESSION["prefs_cache"])
+			$_SESSION["prefs_cache"] = array();
+	}
 
 	function get_pref($link, $pref_name, $user_id = false) {
 
diff --git a/schema/ttrss_schema_mysql.sql b/schema/ttrss_schema_mysql.sql
index 8b62cd837..8bfd48860 100644
--- a/schema/ttrss_schema_mysql.sql
+++ b/schema/ttrss_schema_mysql.sql
@@ -170,7 +170,7 @@ create table ttrss_tags (id integer primary key auto_increment,
 
 create table ttrss_version (schema_version int not null) TYPE=InnoDB;
 
-insert into ttrss_version values (4);
+insert into ttrss_version values (5);
 
 create table ttrss_prefs_types (id integer not null primary key, 
 	type_name varchar(100) not null) TYPE=InnoDB;
@@ -246,4 +246,11 @@ create table ttrss_user_prefs (
 	index (pref_name),
 	foreign key (pref_name) references ttrss_prefs(pref_name) ON DELETE CASCADE) TYPE=InnoDB;
 
+create table ttrss_scheduled_updates (id integer not null primary key auto_increment,
+	owner_uid integer not null,
+	feed_id integer default null,
+	entered datetime not null,
+	foreign key (owner_uid) references ttrss_users(id) ON DELETE CASCADE,
+	foreign key (feed_id) references ttrss_feeds(id) ON DELETE CASCADE) TYPE=InnoDB;
+
 commit;
diff --git a/schema/ttrss_schema_pgsql.sql b/schema/ttrss_schema_pgsql.sql
index a0d570d36..d948fa560 100644
--- a/schema/ttrss_schema_pgsql.sql
+++ b/schema/ttrss_schema_pgsql.sql
@@ -152,7 +152,7 @@ create index ttrss_tags_owner_uid_index on ttrss_tags(owner_uid);
 
 create table ttrss_version (schema_version int not null);
 
-insert into ttrss_version values (4);
+insert into ttrss_version values (5);
 
 create table ttrss_prefs_types (id integer not null primary key, 
 	type_name varchar(100) not null);
@@ -223,4 +223,9 @@ create table ttrss_user_prefs (
 create index ttrss_user_prefs_owner_uid_index on ttrss_user_prefs(owner_uid);
 create index ttrss_user_prefs_value_index on ttrss_user_prefs(value);
 
+create table ttrss_scheduled_updates (id serial not null primary key,
+	owner_uid integer not null references ttrss_users(id) ON DELETE CASCADE,
+	feed_id integer default null references ttrss_feeds(id) ON DELETE CASCADE,
+	entered timestamp not null default NOW());
+
 commit;
diff --git a/update_daemon.php b/update_daemon.php
new file mode 100644
index 000000000..4f30cb53e
--- /dev/null
+++ b/update_daemon.php
@@ -0,0 +1,65 @@
+#!/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);
+
+?>
diff --git a/update_feeds.php b/update_feeds.php
index b2836a446..31e3a1283 100644
--- a/update_feeds.php
+++ b/update_feeds.php
@@ -4,6 +4,8 @@
 	// directory defined in config.php won't be accessible
 	define('MAGPIE_CACHE_DIR', '/var/tmp/magpie-ttrss-cache-cli');
 
+	define('DISABLE_SESSIONS', true);
+
 	require_once "sanity_check.php";
 	require_once "config.php";
 	require_once "db.php";