update_daemon_loop.php

   1 #!/usr/bin/php
   2 <?php
   3         // this daemon runs in the background and updates all feeds
   4         // continuously
   5
   6         if ($argv[1] != "SRV_RUN_OK") {
   7                 die("This script should be run by update_daemon.php\n");
   8         }
   9
  10         // define('DEFAULT_ERROR_LEVEL', E_ALL);
  11         define('DEFAULT_ERROR_LEVEL', E_ERROR | E_WARNING | E_PARSE);
  12
  13         declare(ticks = 1);
  14
  15         define('MAGPIE_CACHE_DIR', '/var/tmp/magpie-ttrss-cache-daemon');
  16         define('SIMPLEPIE_CACHE_DIR',   '/var/tmp/simplepie-ttrss-cache-daemon');
  17         define('DISABLE_SESSIONS', true);
  18
  19         require_once "version.php";
  20
  21         if (strpos(VERSION, ".99") !== false) {
  22                 define('DAEMON_EXTENDED_DEBUG', true);
  23         }
  24
  25         define('PURGE_INTERVAL', 3600); // seconds
  26
  27         require_once "sanity_check.php";
  28         require_once "config.php";
  29
  30         if (!ENABLE_UPDATE_DAEMON) {
  31                 die("Please enable option ENABLE_UPDATE_DAEMON in config.php\n");
  32         }
  33
  34         require_once "db.php";
  35         require_once "db-prefs.php";
  36         require_once "functions.php";
  37         require_once "magpierss/rss_fetch.inc";
  38
  39         error_reporting(DEFAULT_ERROR_LEVEL);
  40
  41         function sigalrm_handler() {
  42                 die("received SIGALRM, hang in feed update?\n");
  43         }
  44
  45         pcntl_signal(SIGALRM, sigalrm_handler);
  46
  47         $link = db_connect(DB_HOST, DB_USER, DB_PASS, DB_NAME);
  48
  49         if (!$link) {
  50                 if (DB_TYPE == "mysql") {
  51                         print mysql_error();
  52                 }
  53                 // PG seems to display its own errors just fine by default.
  54                 return;
  55         }
  56
  57         if (DB_TYPE == "pgsql") {
  58                 pg_query("set client_encoding = 'utf-8'");
  59                 pg_set_client_encoding("UNICODE");
  60         } else {
  61                 if (defined('MYSQL_CHARSET') && MYSQL_CHARSET) {
  62                         db_query($link, "SET NAMES " . MYSQL_CHARSET);
  63 //                      db_query($link, "SET CHARACTER SET " . MYSQL_CHARSET);
  64                 }
  65         }
  66
  67         $last_purge = 0;
  68
  69         if (!make_stampfile('update_daemon.stamp')) {
  70                 print "error: unable to create stampfile";
  71                 die;
  72         }
  73
  74         if (time() - $last_purge > PURGE_INTERVAL) {
  75                 _debug("Purging old posts (random 30 feeds)...");
  76                 global_purge_old_posts($link, true, 30);
  77                 $last_purge = time();
  78         }
  79
  80         // FIXME: get all scheduled updates w/forced refetch
  81         // Stub, until I figure out if it is really needed.
  82
  83 #               $result = db_query($link, "SELECT * FROM ttrss_scheduled_updates ORDER BY id");
  84 #               while ($line = db_fetch_assoc($result)) {
  85 #                       print "Scheduled feed update: " . $line["feed_id"] . ", UID: " .
  86 #                               $line["owner_uid"] . "\n";
  87 #               }
  88
  89         // Process all other feeds using last_updated and interval parameters
  90
  91         $random_qpart = sql_random_function();
  92
  93 /*
  94                                 ttrss_entries.date_entered < NOW() - INTERVAL '$purge_interval days'");
  95                 }
  96
  97                 $rows = pg_affected_rows($result);
  98
  99         } else {
 100
 101                 $result = db_query($link, "DELETE FROM ttrss_user_entries
 102                         USING ttrss_user_entries, ttrss_entries
 103                         WHERE ttrss_entries.id = ref_id AND
 104                         marked = false AND
 105                         feed_id = '$feed_id' AND
 106                         ttrss_entries.date_entered < DATE_SUB(NOW(), INTERVAL $purge_interval DAY)"); */
 107
 108         if (DAEMON_UPDATE_LOGIN_LIMIT > 0) {
 109                 if (DB_TYPE == "pgsql") {
 110                         $login_thresh_qpart = "AND ttrss_users.last_login >= NOW() - INTERVAL '".DAEMON_UPDATE_LOGIN_LIMIT." days'";
 111                 } else {
 112                         $login_thresh_qpart = "AND ttrss_users.last_login >= DATE_SUB(NOW(), INTERVAL ".DAEMON_UPDATE_LOGIN_LIMIT." DAY)";
 113                 }
 114         } else {
 115                 $login_thresh_qpart = "";
 116         }
 117
 118         if (DB_TYPE == "pgsql") {
 119                 $update_limit_qpart = "AND ((
 120                                 ttrss_feeds.update_interval = 0
 121                                 AND ttrss_feeds.last_updated < NOW() - CAST((ttrss_user_prefs.value || ' minutes') AS INTERVAL)
 122                         ) OR (
 123                                 ttrss_feeds.update_interval > 0
 124                                 AND ttrss_feeds.last_updated < NOW() - CAST((ttrss_feeds.update_interval || ' minutes') AS INTERVAL)
 125                         ))";
 126         } else {
 127                 $update_limit_qpart = "AND ((
 128                                 ttrss_feeds.update_interval = 0
 129                                 AND ttrss_feeds.last_updated < DATE_SUB(NOW(), INTERVAL CONVERT(ttrss_user_prefs.value, SIGNED INTEGER) MINUTE)
 130                         ) OR (
 131                                 ttrss_feeds.update_interval > 0
 132                                 AND ttrss_feeds.last_updated < DATE_SUB(NOW(), INTERVAL ttrss_feeds.update_interval MINUTE)
 133                         ))";
 134         }
 135
 136         if (DB_TYPE == "pgsql") {
 137                 $updstart_thresh_qpart = "AND (ttrss_feeds.last_update_started IS NULL OR ttrss_feeds.last_update_started < NOW() - INTERVAL '120 seconds')";
 138         } else {
 139                 $updstart_thresh_qpart = "AND (ttrss_feeds.last_update_started IS NULL OR ttrss_feeds.last_update_started < DATE_SUB(NOW(), INTERVAL 120 SECOND))";
 140         }
 141
 142         $result = db_query($link, "SELECT ttrss_feeds.feed_url,ttrss_feeds.id, ttrss_feeds.owner_uid,
 143                         SUBSTRING(ttrss_feeds.last_updated,1,19) AS last_updated,
 144                         ttrss_feeds.update_interval
 145                 FROM
 146                         ttrss_feeds, ttrss_users, ttrss_user_prefs
 147                 WHERE
 148                         ttrss_feeds.owner_uid = ttrss_users.id
 149                         AND ttrss_users.id = ttrss_user_prefs.owner_uid
 150                         AND ttrss_user_prefs.pref_name='DEFAULT_UPDATE_INTERVAL'
 151                         $login_thresh_qpart $update_limit_qpart
 152                          $updstart_thresh_qpart
 153                 ORDER BY $random_qpart DESC LIMIT " . DAEMON_FEED_LIMIT);
 154
 155         $user_prefs_cache = array();
 156
 157         _debug(sprintf("Scheduled %d feeds to update...\n", db_num_rows($result)));
 158
 159         // Here is a little cache magic in order to minimize risk of double feed updates.
 160         $feeds_to_update = array();
 161         while ($line = db_fetch_assoc($result)) {
 162                 $feeds_to_update[$line['id']] = $line;
 163         }
 164
 165         // We update the feed last update started date before anything else.
 166         // There is no lag due to feed contents downloads
 167         // It prevent an other process to update the same feed (for exemple, forced update by user).
 168         $feed_ids = array_keys($feeds_to_update);
 169         if($feed_ids) {
 170                 db_query($link, sprintf("UPDATE ttrss_feeds SET last_update_started = NOW()
 171                 WHERE id IN (%s)", implode(',', $feed_ids)));
 172         }
 173
 174         while ($line = array_pop($feeds_to_update)) {
 175
 176                 _debug("Feed: " . $line["feed_url"] . ", " . $line["last_updated"]);
 177
 178                 pcntl_alarm(300);
 179                 update_rss_feed($link, $line["feed_url"], $line["id"], true);
 180                 pcntl_alarm(0);
 181
 182                 sleep(1); // prevent flood (FIXME make this an option?)
 183         }
 184
 185         if (DAEMON_SENDS_DIGESTS) send_headlines_digests($link);
 186
 187         db_close($link);
 188
 189 ?>