From 7bfa1e069777af48312d509a88e5faff02f930ff Mon Sep 17 00:00:00 2001
From: Mark Wooding <mdw@distorted.org.uk>
Date: Sat, 15 May 2010 19:34:56 +0100
Subject: [PATCH] svc/conntrack.in: Better diagnostic equipment for D-Bus
 reconnection.

Send out notifications about the D-Bus connection status.  Also, inspect
some environment variables and decide which bus to connect to, so that
I can have it connect to a special test bus which I can bounce up and
down without destroying the world.
---
 svc/conntrack.in | 25 +++++++++++++++++++++----
 1 file changed, 21 insertions(+), 4 deletions(-)

diff --git a/svc/conntrack.in b/svc/conntrack.in
index 18e2f730..367d26d4 100644
--- a/svc/conntrack.in
+++ b/svc/conntrack.in
@@ -388,6 +388,7 @@ class DBusMonitor (object):
     """
     me._mons = []
     me._loop = D.mainloop.glib.DBusGMainLoop()
+    me._state = 'startup'
     me._reconnect()
 
   def addmon(me, mon):
@@ -408,6 +409,14 @@ class DBusMonitor (object):
 
     If we fail the first time, retry periodically.
     """
+    if me._state == 'startup':
+      T.aside(SM.notify, 'conntrack', 'dbus-connection', 'startup')
+    elif me._state == 'connected':
+      T.aside(SM.notify, 'conntrack', 'dbus-connection', 'lost')
+    else:
+      T.aside(SM.notify, 'conntrack', 'dbus-connection',
+              'state=%s' % me._state)
+    me._state == 'reconnecting'
     me._bus = None
     if me._try_connect():
       G.timeout_add_seconds(5, me._try_connect)
@@ -419,13 +428,21 @@ class DBusMonitor (object):
     If we succeed, attach the monitors.
     """
     try:
-      bus = D.SystemBus(mainloop = me._loop, private = True)
-    except D.DBusException:
+      addr = OS.getenv('TRIPE_CONNTRACK_BUS')
+      if addr == 'SESSION':
+        bus = D.SessionBus(mainloop = me._loop, private = True)
+      elif addr is not None:
+        bus = D.bus.BusConnection(addr, mainloop = me._loop)
+      else:
+        bus = D.SystemBus(mainloop = me._loop, private = True)
+      for m in me._mons:
+        m.attach(bus)
+    except D.DBusException, e:
       return True
     me._bus = bus
+    me._state = 'connected'
     bus.call_on_disconnection(me._reconnect)
-    for m in me._mons:
-      m.attach(bus)
+    T.aside(SM.notify, 'conntrack', 'dbus-connection', 'connected')
     return False
 
 ###--------------------------------------------------------------------------
-- 
2.11.0