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