]> git.wh0rd.org - tt-rss.git/blobdiff - include/rssfuncs.php
daemon: show feeds/minute stats
[tt-rss.git] / include / rssfuncs.php
index 73fe757c3dfac0d930d265de7a41ffe6b5c28c4f..01a11da6b535183096cb04158c82834575942160 100644 (file)
                $random_qpart = sql_random_function();
 
                // We search for feed needing update.
-               $result = db_query($link, "SELECT ttrss_feeds.feed_url,ttrss_feeds.id, ttrss_feeds.owner_uid,
-                               ".SUBSTRING_FOR_DATE."(ttrss_feeds.last_updated,1,19) AS last_updated,
-                               ttrss_feeds.update_interval
+               $result = db_query($link, "SELECT DISTINCT ttrss_feeds.feed_url
                        FROM
                                ttrss_feeds, ttrss_users, ttrss_user_prefs
                        WHERE
                                AND ttrss_users.id = ttrss_user_prefs.owner_uid
                                AND ttrss_user_prefs.pref_name = 'DEFAULT_UPDATE_INTERVAL'
                                $login_thresh_qpart $update_limit_qpart
-                        $updstart_thresh_qpart
-                       ORDER BY $random_qpart $query_limit");
+                               $updstart_thresh_qpart
+                       ORDER BY feed_url $query_limit");
 
                $user_prefs_cache = array();
 
-               if($debug) _debug(sprintf("Scheduled %d feeds to update...\n", db_num_rows($result)));
+               if($debug) _debug(sprintf("Scheduled %d feeds to update...", db_num_rows($result)));
 
                // Here is a little cache magic in order to minimize risk of double feed updates.
                $feeds_to_update = array();
                while ($line = db_fetch_assoc($result)) {
-                       $feeds_to_update[$line['id']] = $line;
+                       array_push($feeds_to_update, db_escape_string($link, $line['feed_url']));
                }
 
                // We update the feed last update started date before anything else.
                // There is no lag due to feed contents downloads
                // It prevent an other process to update the same feed.
-               $feed_ids = array_keys($feeds_to_update);
-               if($feed_ids) {
+
+               if(count($feeds_to_update) > 0) {
+                       $feeds_quoted = array();
+
+                       foreach ($feeds_to_update as $feed) {
+                               array_push($feeds_quoted, "'" . db_escape_string($link, $feed) . "'");
+                       }
+
                        db_query($link, sprintf("UPDATE ttrss_feeds SET last_update_started = NOW()
-                               WHERE id IN (%s)", implode(',', $feed_ids)));
+                               WHERE feed_url IN (%s)", implode(',', $feeds_quoted)));
                }
 
                expire_cached_files($debug);
                expire_lock_files($debug);
 
-               // For each feed, we call the feed update function.
-               while ($line = array_pop($feeds_to_update)) {
-
-                       if($debug) _debug("Feed: " . $line["feed_url"] . ", " . $line["last_updated"]);
+               $nf = 0;
 
-                       update_rss_feed($link, $line["id"], true);
-
-                       sleep(1); // prevent flood (FIXME make this an option?)
+               // For each feed, we call the feed update function.
+               foreach ($feeds_to_update as $feed) {
+                       if($debug) _debug("Base feed: $feed");
+
+                       //update_rss_feed($link, $line["id"], true);
+
+                       // since we have the data cached, we can deal with other feeds with the same url
+
+                       $tmp_result = db_query($link, "SELECT ttrss_feeds.feed_url,ttrss_feeds.id,last_updated
+                       FROM ttrss_feeds, ttrss_users WHERE
+                               ttrss_users.id = ttrss_feeds.owner_uid AND
+                               feed_url = '".db_escape_string($link, $feed)."' AND
+                               ttrss_feeds.update_interval != -1
+                               $login_thresh_qpart
+                       ORDER BY feed_url $query_limit");
+
+                       if (db_num_rows($tmp_result) > 0) {
+                               while ($tline = db_fetch_assoc($tmp_result)) {
+                                       if($debug) _debug(" => " . $tline["last_updated"] . ", " . $tline["id"]);
+                                       update_rss_feed($link, $tline["id"], true);
+                                       ++$nf;
+                               }
+                       }
                }
 
                require_once "digest.php";
                // Send feed digests by email if needed.
                send_headlines_digests($link, $debug);
 
+               return $nf;
+
        } // function update_daemon_common
 
        // ignore_daemon is not used
 
                $feed = db_escape_string($link, $feed);
 
-               /* if ($auth_login && $auth_pass ){
-                       $url_parts = array();
-                       preg_match("/(^[^:]*):\/\/(.*)/", $fetch_url, $url_parts);
+               if ($override_url) $fetch_url = $override_url;
 
-                       if ($url_parts[1] && $url_parts[2]) {
-                               $fetch_url = $url_parts[1] . "://$auth_login:$auth_pass@" . $url_parts[2];
-                       }
-               } */
+               $date_feed_processed = date('Y-m-d H:i');
+
+               $cache_filename = CACHE_DIR . "/simplepie/" . sha1($fetch_url) . ".feed";
 
-               if ($override_url)
-                       $fetch_url = $override_url;
+               // Ignore cache if new feed or manual update.
+               $cache_age = ($no_cache || is_null($last_updated) || $last_updated == '1970-01-01 00:00:00') ?
+                       30 : get_feed_update_interval($link, $feed) * 60;
 
                if ($debug_enabled) {
-                       _debug("update_rss_feed: fetching [$fetch_url]...");
+                       _debug("update_rss_feed: cache filename: $cache_filename exists: " . file_exists($cache_filename));
+                       _debug("update_rss_feed: cache age: $cache_age; no cache: $no_cache");
                }
 
-               // Ignore cache if new feed or manual update.
-               $cache_age = (is_null($last_updated) || $last_updated == '1970-01-01 00:00:00') ?
-                       -1 : get_feed_update_interval($link, $feed) * 60;
+               $cached_feed_data_hash = false;
 
-               $simplepie_cache_dir = CACHE_DIR . "/simplepie";
+               $rss = false;
+               $rss_hash = false;
+               $cache_timestamp = file_exists($cache_filename) ? filemtime($cache_filename) : 0;
+               $last_updated_timestamp = strtotime($last_updated);
 
-               $date_feed_processed = date('Y-m-d H:i');
+               if (file_exists($cache_filename) &&
+                       is_readable($cache_filename) &&
+                       !$auth_login && !$auth_pass &&
+                       filemtime($cache_filename) > time() - $cache_age) {
+
+                               if ($debug_enabled) {
+                                       _debug("update_rss_feed: using local cache.");
+                               }
+
+                               if ($cache_timestamp > $last_updated_timestamp) {
+                                       @$rss_data = file_get_contents($cache_filename);
 
-               if (!is_dir($simplepie_cache_dir)) {
-                       mkdir($simplepie_cache_dir);
+                                       if ($rss_data) {
+                                               $rss_hash = sha1($rss_data);
+                                               @$rss = unserialize($rss_data);
+                                       }
+                               } else {
+                                       if ($debug_enabled) {
+                                               _debug("update_rss_feed: local cache valid and older than last_updated, nothing to do.");
+                                       }
+                                       return;
+                               }
                }
 
-               $feed_data = fetch_file_contents($fetch_url, false,
-                       $auth_login, $auth_pass, false, $no_cache ? 15 : 45);
+               if (!$rss) {
 
-               if (!$feed_data) {
-                       global $fetch_last_error;
+                       if (!$feed_data) {
+                               if ($debug_enabled) {
+                                       _debug("update_rss_feed: fetching [$fetch_url] (ts: $cache_timestamp/$last_updated_timestamp)");
+                               }
+
+                               $feed_data = fetch_file_contents($fetch_url, false,
+                                       $auth_login, $auth_pass, false, $no_cache ? 15 : 45,
+                                       max($last_updated_timestamp, $cache_timestamp));
+
+                               if ($debug_enabled) {
+                                       _debug("update_rss_feed: fetch done.");
+                               }
 
-                       if ($debug_enabled) {
-                               _debug("update_rss_feed: unable to fetch: $fetch_last_error");
                        }
 
-                       $error_escaped = db_escape_string($link, $fetch_last_error);
+                       if (!$feed_data) {
+                               global $fetch_last_error;
+                               global $fetch_last_error_code;
 
-                       db_query($link,
-                               "UPDATE ttrss_feeds SET last_error = '$error_escaped',
-                                       last_updated = NOW() WHERE id = '$feed'");
+                               if ($debug_enabled) {
+                                       _debug("update_rss_feed: unable to fetch: $fetch_last_error [$fetch_last_error_code]");
+                               }
+
+                               $error_escaped = '';
 
-                       return;
+                               // If-Modified-Since
+                               if ($fetch_last_error_code != 304) {
+                                       $error_escaped = db_escape_string($link, $fetch_last_error);
+                               } else {
+                                       if ($debug_enabled) {
+                                               _debug("update_rss_feed: source claims data not modified, nothing to do.");
+                                       }
+                               }
+
+                               db_query($link,
+                                       "UPDATE ttrss_feeds SET last_error = '$error_escaped',
+                                               last_updated = NOW() WHERE id = '$feed'");
+
+                               return;
+                       }
                }
 
                $pluginhost = new PluginHost($link);
                        $feed_data = $plugin->hook_feed_fetched($feed_data);
                }
 
-               if ($debug_enabled) {
-                       _debug("update_rss_feed: fetch done, parsing...");
-               }
-
-               $rss = new SimplePie();
-               $rss->set_sanitize_class("SanitizeDummy");
-               // simplepie ignores the above and creates default sanitizer anyway,
-               // so let's override it...
-               $rss->sanitize = new SanitizeDummy();
-               $rss->set_output_encoding('UTF-8');
-               $rss->set_raw_data($feed_data);
-
-               if ($debug_enabled) {
-                       _debug("feed update interval (sec): " .
-                               get_feed_update_interval($link, $feed)*60);
-               }
-
-               $rss->enable_cache(!$no_cache);
-
-               if (!$no_cache) {
-                       $rss->set_cache_location($simplepie_cache_dir);
-                       $rss->set_cache_duration($cache_age);
+               if (!$rss) {
+                       $rss = new SimplePie();
+                       $rss->set_sanitize_class("SanitizeDummy");
+                       // simplepie ignores the above and creates default sanitizer anyway,
+                       // so let's override it...
+                       $rss->sanitize = new SanitizeDummy();
+                       $rss->set_output_encoding('UTF-8');
+                       $rss->set_raw_data($feed_data);
+                       $rss->enable_cache(false);
+
+                       @$rss->init();
                }
 
-               @$rss->init();
-
 //             print_r($rss);
 
                $feed = db_escape_string($link, $feed);
 
                if (!$rss->error()) {
 
+                       // cache data for later
+                       if (!$auth_pass && !$auth_login && is_writable(CACHE_DIR . "/simplepie")) {
+                               $rss_data = serialize($rss);
+                               $new_rss_hash = sha1($rss_data);
+
+                               if ($new_rss_hash != $rss_hash) {
+                                       if ($debug_enabled) {
+                                               _debug("update_rss_feed: saving $cache_filename");
+                                       }
+                                       @file_put_contents($cache_filename, serialize($rss));
+                               }
+                       }
+
                        // We use local pluginhost here because we need to load different per-user feed plugins
                        $pluginhost->run_hooks($pluginhost::HOOK_FEED_PARSED, "hook_feed_parsed", $rss);