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controller.handler: use normal classes rather than a namedtuple

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and add some comments.  no functional changes.

Signed-off-by: YAMAMOTO Takashi <yamamoto@valinux.co.jp>
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
This commit is contained in:
YAMAMOTO Takashi 2014-03-26 13:04:13 +09:00 committed by FUJITA Tomonori
parent 97bf63e7c7
commit d27deb34be
1 changed files with 22 additions and 5 deletions
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27
ryu/controller/handler.py
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@ -1,4 +1,4 @@
# Copyright (C) 2011, 2012 Nippon Telegraph and Telephone Corporation.
# Copyright (C) 2011-2014 Nippon Telegraph and Telephone Corporation.
# Copyright (C) 2011, 2012 Isaku Yamahata <yamahata at valinux co jp>
#
# Licensed under the Apache License, Version 2.0 (the "License");
@ -17,7 +17,6 @@
import inspect
import logging
import sys
from collections import namedtuple
LOG = logging.getLogger('ryu.controller.handler')
@ -27,7 +26,25 @@ CONFIG_DISPATCHER = "config"
MAIN_DISPATCHER = "main"
DEAD_DISPATCHER = "dead"
caller = namedtuple('caller', 'ev_cls dispatchers ev_source')
class _Caller(object):
"""Describe how to handle an event class.
"""
def __init__(self, ev_cls, dispatchers, ev_source):
"""Initialize _Caller.
:param ev_cls: The event class to accept.
:param dispatchers: A list of states or a state, in which this
is in effect.
None and [] mean all states.
:param ev_source: The module which generates the event.
ev_cls.__module__ for set_ev_cls.
None for set_ev_handler.
"""
self.ev_cls = ev_cls
self.dispatchers = dispatchers
self.ev_source = ev_source
# should be named something like 'observe_event'
@ -36,7 +53,7 @@ def set_ev_cls(ev_cls, dispatchers=None):
if 'callers' not in dir(handler):
handler.callers = {}
for e in _listify(ev_cls):
c = caller(e, _listify(dispatchers), e.__module__)
c = _Caller(e, _listify(dispatchers), e.__module__)
handler.callers[e] = c
return handler
return _set_ev_cls_dec
@ -47,7 +64,7 @@ def set_ev_handler(ev_cls, dispatchers=None):
if 'callers' not in dir(handler):
handler.callers = {}
for e in _listify(ev_cls):
c = caller(e, _listify(dispatchers), None)
c = _Caller(e, _listify(dispatchers), None)
handler.callers[e] = c
return handler
return _set_ev_cls_dec