def close(self):
		'''关闭与数据库的连接'''
		if VERBOSE:
			print 'Database connection CLOSE.'
		self.conn.close()
def app_settings():

    app_settings = {'GRAPHITE_HOST': settings.GRAPHITE_HOST,
                    'OCULUS_HOST': settings.OCULUS_HOST,
                    'FULL_NAMESPACE': settings.FULL_NAMESPACE,
                    }

    resp = json.dumps(app_settings)
    return resp, 200