From: John Eckersberg <jeckersb@redhat.com>
Date: Wed, 18 Feb 2015 16:11:12 -0500
Subject: [PATCH] Add systemd notification support


diff --git a/src/rabbit.erl b/src/rabbit.erl
index 1a35669..6b1531d 100644
--- a/src/rabbit.erl
+++ b/src/rabbit.erl
@@ -280,6 +280,11 @@ broker_start() ->
     Plugins = rabbit_plugins:setup(),
     ToBeLoaded = Plugins ++ ?APPS,
     start_apps(ToBeLoaded),
+    case code:load_file(sd_notify) of
+        {module, sd_notify} -> SDNotify = sd_notify,
+			       SDNotify:sd_notify(0, "READY=1\nSTATUS=Initialized\nMAINPID=" ++ os:getpid() ++ "\n");
+        {error, _} -> ok
+    end,
     ok = log_broker_started(rabbit_plugins:active()).
 
 start_it(StartFun) ->