update_daemon.php

   1 #!/usr/bin/php
   2 <?php
   3         // this daemon runs in the background and updates all feeds
   4         // continuously
   5
   6         // define('DEFAULT_ERROR_LEVEL', E_ALL);
   7         define('DEFAULT_ERROR_LEVEL', E_ERROR | E_WARNING | E_PARSE);
   8
   9         declare(ticks = 1);
  10
  11         define('MAGPIE_CACHE_DIR', '/var/tmp/magpie-ttrss-cache-daemon');
  12         define('DISABLE_SESSIONS', true);
  13
  14         require_once "version.php";
  15
  16         if (strpos(VERSION, ".99") !== false) {
  17                 define('DAEMON_EXTENDED_DEBUG', true);
  18         }
  19
  20         define('PURGE_INTERVAL', 3600); // seconds
  21
  22         require_once "sanity_check.php";
  23         require_once "config.php";
  24
  25         if (!ENABLE_UPDATE_DAEMON) {
  26                 die("Please enable option ENABLE_UPDATE_DAEMON in config.php\n");
  27         }
  28
  29         require_once "db.php";
  30         require_once "db-prefs.php";
  31         require_once "functions.php";
  32         require_once "magpierss/rss_fetch.inc";
  33
  34         error_reporting(DEFAULT_ERROR_LEVEL);
  35
  36         function sigint_handler() {
  37                 unlink("update_daemon.lock");
  38                 die("Received SIGINT. Exiting.\n");
  39         }
  40
  41 //      function sigalrm_handler() {
  42 //              print "SIGALARM\n";
  43 //              pcntl_alarm(3);
  44 //      }
  45
  46         pcntl_signal(SIGINT, sigint_handler);
  47 //      pcntl_signal(SIGALRM, sigalrm_handler);
  48
  49         $lock_handle = make_lockfile("update_daemon.lock");
  50
  51         if (!$lock_handle) {
  52                 die("error: Can't create lockfile ($lock_filename). ".
  53                         "Maybe another daemon is already running.\n");
  54         }
  55
  56         $link = db_connect(DB_HOST, DB_USER, DB_PASS, DB_NAME);
  57
  58         if (!$link) {
  59                 if (DB_TYPE == "mysql") {
  60                         print mysql_error();
  61                 }
  62                 // PG seems to display its own errors just fine by default.
  63                 return;
  64         }
  65
  66         if (DB_TYPE == "pgsql") {
  67                 pg_query("set client_encoding = 'utf-8'");
  68                 pg_set_client_encoding("UNICODE");
  69         }
  70
  71         $last_purge = 0;
  72
  73         while (true) {
  74
  75                 if (time() - $last_purge > PURGE_INTERVAL) {
  76                         _debug("Purging old posts (random 30 feeds)...");
  77                         global_purge_old_posts($link, true, 30);
  78                         $last_purge = time();
  79                 }
  80
  81                 // FIXME: get all scheduled updates w/forced refetch
  82                 // Stub, until I figure out if it is really needed.
  83
  84 #               $result = db_query($link, "SELECT * FROM ttrss_scheduled_updates ORDER BY id");
  85 #               while ($line = db_fetch_assoc($result)) {
  86 #                       print "Scheduled feed update: " . $line["feed_id"] . ", UID: " .
  87 #                               $line["owner_uid"] . "\n";
  88 #               }
  89
  90                 // Process all other feeds using last_updated and interval parameters
  91
  92                 $random_qpart = sql_random_function();
  93
  94 /*
  95                                         ttrss_entries.date_entered < NOW() - INTERVAL '$purge_interval days'");
  96                         }
  97
  98                         $rows = pg_affected_rows($result);
  99
 100                 } else {
 101
 102                         $result = db_query($link, "DELETE FROM ttrss_user_entries
 103                                 USING ttrss_user_entries, ttrss_entries
 104                                 WHERE ttrss_entries.id = ref_id AND
 105                                 marked = false AND
 106                                 feed_id = '$feed_id' AND
 107                                 ttrss_entries.date_entered < DATE_SUB(NOW(), INTERVAL $purge_interval DAY)"); */
 108
 109                 if (DAEMON_UPDATE_LOGIN_LIMIT > 0) {
 110                         if (DB_TYPE == "pgsql") {
 111                                 $login_thresh_qpart = "AND ttrss_users.last_login >= NOW() - INTERVAL '".DAEMON_UPDATE_LOGIN_LIMIT." days'";
 112                         } else {
 113                                 $login_thresh_qpart = "AND ttrss_users.last_login >= DATE_SUB(NOW(), INTERVAL ".DAEMON_UPDATE_LOGIN_LIMIT." DAY)";
 114                         }
 115                 } else {
 116                         $login_thresh_qpart = "";
 117                 }
 118
 119                 $result = db_query($link, "SELECT feed_url,ttrss_feeds.id,owner_uid,
 120                                 SUBSTRING(last_updated,1,19) AS last_updated,
 121                                 update_interval
 122                         FROM
 123                                 ttrss_feeds,ttrss_users
 124                         WHERE
 125                                 ttrss_users.id = owner_uid $login_thresh_qpart
 126                         ORDER BY $random_qpart DESC");
 127
 128                 $user_prefs_cache = array();
 129
 130                 _debug(sprintf("Scheduled %d feeds to update...\n", db_num_rows($result)));
 131
 132                 while ($line = db_fetch_assoc($result)) {
 133
 134                         $upd_intl = $line["update_interval"];
 135                         $user_id = $line["owner_uid"];
 136
 137                         if (!$upd_intl || $upd_intl == 0) {
 138                                 if (!$user_prefs_cache[$user_id]['DEFAULT_UPDATE_INTERVAL']) {
 139                                         $upd_intl = get_pref($link, 'DEFAULT_UPDATE_INTERVAL', $user_id);
 140                                         $user_prefs_cache[$user_id]['DEFAULT_UPDATE_INTERVAL'] = $upd_intl;
 141                                 } else {
 142                                         $upd_intl = $user_prefs_cache[$user_id]['DEFAULT_UPDATE_INTERVAL'];
 143                                 }
 144                         }
 145
 146                         if ($upd_intl < 0) {
 147 #                               print "Updates disabled.\n";
 148                                 continue;
 149                         }
 150
 151                         _debug("Feed: " . $line["feed_url"]);
 152
 153 //                      _debug(sprintf("\tLU: %d, INTL: %d, UID: %d) ",
 154 //                              time() - strtotime($line["last_updated"]), $upd_intl*60, $user_id));
 155
 156                         if (!$line["last_updated"] ||
 157                                 time() - strtotime($line["last_updated"]) > ($upd_intl * 60)) {
 158
 159                                 _debug("Updating...");
 160
 161                                 update_rss_feed($link, $line["feed_url"], $line["id"], true);
 162                                 sleep(1); // prevent flood (FIXME make this an option?)
 163                         } else {
 164                                 _debug("Update not needed.");
 165                         }
 166                 }
 167
 168                 if (DAEMON_SENDS_DIGESTS) send_headlines_digests($link);
 169
 170                 _debug("Sleeping for " . DAEMON_SLEEP_INTERVAL . " seconds...");
 171
 172                 sleep(DAEMON_SLEEP_INTERVAL);
 173         }
 174
 175         db_close($link);
 176
 177 ?>