From 4b8a4fc870a183dc1802698ef7ea5aaf73697db6 Mon Sep 17 00:00:00 2001
From: YAMAMOTO Takashi <yamamoto@valinux.co.jp>
Date: Fri, 8 Feb 2013 12:28:14 +0900
Subject: [PATCH] app_manager: add some assertions and LOG.info

Signed-off-by: YAMAMOTO Takashi <yamamoto@valinux.co.jp>
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
---
 ryu/base/app_manager.py | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/ryu/base/app_manager.py b/ryu/base/app_manager.py
index f6441ac7..a9895a24 100644
--- a/ryu/base/app_manager.py
+++ b/ryu/base/app_manager.py
@@ -35,6 +35,8 @@ def lookup_service_brick(name):
 
 
 def register_app(app):
+    assert isinstance(app, RyuApp)
+    assert not app.name in SERVICE_BRICKS
     SERVICE_BRICKS[app.name] = app
     register_instance(app)
 
@@ -146,6 +148,8 @@ class AppManager(object):
     def create_contexts(self):
         for key, cls in self.contexts_cls.items():
             context = cls()
+            LOG.info('creating context %s', key)
+            assert not key in self.contexts
             self.contexts[key] = context
             # hack for dpset
             if context.__class__.__base__ == RyuApp: