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