From c74aea589d5a79d7048470d44e457dffc8919ad3 Mon Sep 17 00:00:00 2001
From: Brion Vibber <brion@pobox.com>
Date: Tue, 16 Feb 2010 09:01:59 -0800
Subject: Stomp queue restructuring for mass scalability: - Multiplexing queues
 into groups and for multiple sites. - Sharing vs breakout configurable per
 site and per queue via $config['queue']['breakout'] - Detect how many times a
 message is redelivered, discard if it's killed too many daemons  - count
 configurable with $config['queue']['max_retries']  - can dump the items to
 files in $config['queue']['dead_letter_dir']

Queue daemon memory & resource leak fixes:
- avoid unnecessary reconnections to memcached server (switch persistent connections back in on second initialization, assuming it's child process)
- monkey-patch for leaky .ini loads in DB_DataObject::databaseStructure() - was leaking 200k per active switch
- applied leak fixes to Status_network as well, using intermediate base Safe_DataObject for both it and Memcache_DataObject

Misc queue fixes:
- correct handling of child processes exiting due to signal termination instead of regular exit
- shutdown instead of infinite respawn loop if we're already past the soft memory limit at startup
- Added --all option for xmppdaemon... still opens one xmpp connection per site that has xmpp active

Cache updates:
- add Cache::increment() method with native support for memcached atomic increment
---
 lib/statusnet.php | 54 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 54 insertions(+)

(limited to 'lib/statusnet.php')

diff --git a/lib/statusnet.php b/lib/statusnet.php
index 29e903026..9c7ede5a5 100644
--- a/lib/statusnet.php
+++ b/lib/statusnet.php
@@ -101,6 +101,60 @@ class StatusNet
         self::initPlugins();
     }
 
+    /**
+     * Get identifier of the currently active site configuration
+     * @return string
+     */
+    public static function currentSite()
+    {
+        return common_config('site', 'nickname');
+    }
+
+    /**
+     * Change site configuration to site specified by nickname,
+     * if set up via Status_network. If not, sites other than
+     * the current will fail horribly.
+     *
+     * May throw exception or trigger a fatal error if the given
+     * site is missing or configured incorrectly.
+     *
+     * @param string $nickname
+     */
+    public static function switchSite($nickname)
+    {
+        if ($nickname == StatusNet::currentSite()) {
+            return true;
+        }
+
+        $sn = Status_network::staticGet($nickname);
+        if (empty($sn)) {
+            return false;
+            throw new Exception("No such site nickname '$nickname'");
+        }
+
+        $server = $sn->getServerName();
+        StatusNet::init($server);
+    }
+
+    /**
+     * Pull all local sites from status_network table.
+     *
+     * Behavior undefined if site is not configured via Status_network.
+     *
+     * @return array of nicknames
+     */
+    public static function findAllSites()
+    {
+        $sites = array();
+        $sn = new Status_network();
+        $sn->find();
+        while ($sn->fetch()) {
+            $sites[] = $sn->nickname;
+        }
+        return $sites;
+    }
+
+
     /**
      * Fire initialization events for all instantiated plugins.
      */
-- 
cgit v1.2.3-54-g00ecf