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authorEvan Prodromou <evan@prodromou.name>2008-07-04 01:04:25 -0400
committerEvan Prodromou <evan@prodromou.name>2008-07-04 01:04:25 -0400
commit73a0271960a5e7e2bc6e040595d3071d7b689a99 (patch)
tree569be28a814427c5b0005e4b96ef536ba14ddc60 /queuedaemon.php
parent784299c25778fccb3292b4f339446f37c11d2bf9 (diff)
enqueue notices for offline broadcast
darcs-hash:20080704050425-84dde-d0106845c7b16b80be8e0d5ee9ac93a457334df7.gz
Diffstat (limited to 'queuedaemon.php')
-rwxr-xr-xqueuedaemon.php102
1 files changed, 102 insertions, 0 deletions
diff --git a/queuedaemon.php b/queuedaemon.php
new file mode 100755
index 000000000..9d8a465a6
--- /dev/null
+++ b/queuedaemon.php
@@ -0,0 +1,102 @@
+#!/usr/bin/env php
+<?php
+/*
+ * Laconica - a distributed open-source microblogging tool
+ * Copyright (C) 2008, Controlez-Vous, Inc.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+# Abort if called from a web server
+if (isset($_SERVER) && array_key_exists('REQUEST_METHOD', $_SERVER)) {
+ print "This script must be run from the command line\n";
+ exit();
+}
+
+define('INSTALLDIR', dirname(__FILE__));
+define('LACONICA', true);
+
+require_once(INSTALLDIR . '/lib/common.php');
+
+# Notices should be broadcast in 30 minutes or less
+
+define('CLAIM_TIMEOUT', 30 * 60);
+
+function qd_log($priority, $msg) {
+ common_log($level, 'queuedaemon: '.$msg);
+}
+
+function qd_top_item() {
+
+ $qi = new Queue_item();
+ $qi->orderBy('created');
+ $qi->whereAdd('claimed is NULL', 'OR');
+ $qi->whereAdd('now() - claimed > '.CLAIM_TIMEOUT, 'OR');
+
+ $qi->limit(1);
+
+ $cnt = $qi->find(TRUE);
+
+ if ($cnt) {
+ # XXX: potential race condition
+ # can we force it to only update if claimed is still NULL
+ # (or old)?
+ $orig = clone($qi);
+ $qi->claimed = DB_DataObject_Cast::dateTime();
+ $result = $qi->update($orig);
+ if ($result) {
+ return $qi;
+ }
+ }
+ $qi = NULL;
+ return NULL;
+}
+
+function qd_is_remote($notice) {
+ $user = User::staticGet($notice->profile_id);
+ return !$user;
+}
+
+$in_a_row = 0;
+
+do {
+ qd_log(LOG_INFO, 'checking for queued notices');
+ $qi = qd_top_item();
+ if ($qi) {
+ $in_a_row++;
+ qd_log(LOG_INFO, 'Got queue item #'.$in_a_row.' enqueued '.common_exact_date($qi->created));
+ $notice = Notice::staticGet($qi->notice_id);
+ if ($notice) {
+ qd_log(LOG_INFO, 'broadcasting notice ID = ' . $notice->id);
+ # XXX: what to do if broadcast fails?
+ common_real_broadcast($notice, qd_is_remote($notice));
+ qd_log(LOG_INFO, 'finished broadcasting notice ID = ' . $notice->id);
+ $notice = NULL;
+ } else {
+ qd_log(LOG_WARNING, 'queue item for notice that does not exist');
+ }
+ $qi->delete();
+ $qi = NULL;
+ } else {
+ # In busy times, sleep less
+ $sleeptime = 30000000/($in_a_row+1);
+ qd_log(LOG_INFO, 'sleeping ' . $sleeptime . ' microseconds');
+ usleep($sleeptime);
+ $in_a_row = 0;
+ }
+ # Clear the DB_DataObject cache so we get fresh data
+ $GLOBALS['_DB_DATAOBJECT']['CACHE'] = array();
+} while (true);
+
+?>