Invoke the Server health endpoint
        :param request: Empty
        :param context: the request context
        :return: Status message 'alive'

def Ping(self, request, context):
        """
        Invoke the Server health endpoint
        :param request: Empty
        :param context: the request context
        :return: Status message 'alive'
        """
        status =  processor_pb2.Status()
        status.message='alive'
        return status