+ /**
+ * Ping external hub about this update.
+ * The hub will pull the feed and check for new items later.
+ * Not guaranteed safe in an environment with database replication.
+ *
+ * @param string $feed feed topic URI
+ * @param string $hub PuSH hub URI
+ * @fixme can consolidate pings for user & group posts
+ */
+ function pushFeedExternal($feed, $hub)
+ {
+ $client = new HTTPClient();
+ try {
+ $data = array('hub.mode' => 'publish',
+ 'hub.url' => $feed);
+ $response = $client->post($hub, array(), $data);
+ if ($response->getStatus() == 204) {
+ common_log(LOG_INFO, "PuSH ping to hub $hub for $feed ok");
+ return true;
+ } else {
+ common_log(LOG_ERR, "PuSH ping to hub $hub for $feed failed with HTTP " .
+ $response->getStatus() . ': ' .
+ $response->getBody());
+ }
+ } catch (Exception $e) {
+ common_log(LOG_ERR, "PuSH ping to hub $hub for $feed failed: " . $e->getMessage());
+ return false;
+ }
+ }
+
+ /**
+ * Queue up direct feed update pushes to subscribers on our internal hub.
+ * @param string $atom update feed, containing only new/changed items
+ * @param HubSub $sub open query of subscribers
+ */
+ function pushFeedInternal($atom, $sub)