From e64bb2b43fe3e3e308ce9501ddf81cb5ed59d408 Mon Sep 17 00:00:00 2001
From: OHMURA Kei <ohmura.kei@lab.ntt.co.jp>
Date: Thu, 4 Apr 2013 08:46:47 +0900
Subject: [PATCH] topology/dumper: define contexts to receive events

Signed-off-by: OHMURA Kei <ohmura.kei@lab.ntt.co.jp>
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
---
 ryu/topology/dumper.py | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/ryu/topology/dumper.py b/ryu/topology/dumper.py
index 044e1a15..264871f0 100644
--- a/ryu/topology/dumper.py
+++ b/ryu/topology/dumper.py
@@ -22,6 +22,7 @@ import time
 from ryu.base import app_manager
 from ryu.controller import handler
 from ryu.topology import event
+from ryu.topology import switches
 
 LOG = logging.getLogger(__name__)
 
@@ -29,6 +30,9 @@ LOG = logging.getLogger(__name__)
 class DiscoveryEventDumper(app_manager.RyuApp):
     ''' This app dumps discovery events
     '''
+    _CONTEXTS = {
+        'switches': switches.Switches,
+    }
 
     def __init__(self, *args, **kwargs):
         super(DiscoveryEventDumper, self).__init__(*args, **kwargs)