97cbf8412c
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp> Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
111 lines
3.5 KiB
Python
111 lines
3.5 KiB
Python
# Copyright (C) 2012 Nippon Telegraph and Telephone Corporation.
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# Copyright (C) 2012 Isaku Yamahata <yamahata at valinux co jp>
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
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# implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import logging
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from ryu.controller import event
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from ryu.controller import dispatcher
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from ryu.controller import dp_type
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from ryu.controller import handler
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from ryu.controller.handler import set_ev_cls
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LOG = logging.getLogger('ryu.controller.dpset')
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QUEUE_NAME_DPSET = 'dpset'
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DISPATCHER_NAME_DPSET = 'dpset'
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DPSET_EV_DISPATCHER = dispatcher.EventDispatcher(DISPATCHER_NAME_DPSET)
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class EventDPBase(event.EventBase):
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def __init__(self, dp):
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super(EventDPBase, self).__init__()
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self.dp = dp
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class EventDP(EventDPBase):
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def __init__(self, dp, enter_leave):
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# enter_leave
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# True: dp entered
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# False: dp leaving
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super(EventDP, self).__init__(dp)
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self.enter = enter_leave
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# this depends on controller::Datapath and dispatchers in handler
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class DPSet(object):
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def __init__(self):
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super(DPSet, self).__init__()
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# dp registration and type setting can be occur in any order
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# Sometimes the sw_type is set before dp connection
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self.dp_types = {}
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self.dps = {} # datapath_id => class Datapath
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self.ev_q = dispatcher.EventQueue(QUEUE_NAME_DPSET,
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DPSET_EV_DISPATCHER)
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handler.register_instance(self)
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def register(self, dp):
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assert dp.id is not None
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assert dp.id not in self.dps
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dp_type_ = self.dp_types.pop(dp.id, None)
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if dp_type_ is not None:
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dp.dp_type = dp_type_
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self.ev_q.queue(EventDP(dp, True))
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self.dps[dp.id] = dp
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def unregister(self, dp):
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if dp.id in self.dps:
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del self.dps[dp.id]
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assert dp.id not in self.dp_types
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self.dp_types[dp.id] = getattr(dp, 'dp_type', dp_type.UNKNOWN)
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self.ev_q.queue(EventDP(dp, False))
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def set_type(self, dp_id, dp_type_=dp_type.UNKNOWN):
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if dp_id in self.dps:
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dp = self.dps[dp_id]
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dp.dp_type = dp_type_
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else:
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assert dp_id not in self.dp_types
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self.dp_types[dp_id] = dp_type_
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def get(self, dp_id):
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return self.dps.get(dp_id, None)
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def get_all(self):
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return self.dps.items()
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@set_ev_cls(dispatcher.EventDispatcherChange,
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dispatcher.QUEUE_EV_DISPATCHER)
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def dispacher_change(self, ev):
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LOG.debug('dispatcher change q %s dispatcher %s',
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ev.ev_q.name, ev.new_dispatcher.name)
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if ev.ev_q.name != handler.QUEUE_NAME_OFP_MSG:
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return
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datapath = ev.ev_q.aux
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assert datapath is not None
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if ev.new_dispatcher.name == handler.DISPATCHER_NAME_OFP_MAIN:
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LOG.debug('DPSET: register datapath %s', datapath)
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self.register(datapath)
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elif ev.new_dispatcher.name == handler.DISPATCHER_NAME_OFP_DEAD:
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LOG.debug('DPSET: unregister datapath %s', datapath)
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self.unregister(datapath)
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