ffed73fbe6
Based on the following patch: From: Isaku Yamahata <yamahata@valinux.co.jp> Date: Tue, 20 Nov 2012 12:21:51 +0900 Subject: ryu/lib/quantum_ifaces.py: track the relation of quantum iface-id This is needed for quantum plugin in order to track the association from iface-id to network id or other info. Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp> Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
132 lines
4.2 KiB
Python
132 lines
4.2 KiB
Python
# Copyright (C) 2012 Nippon Telegraph and Telephone Corporation.
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# Copyright (C) 2012 Isaku Yamahata <yamahata at private email ne 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.base import app_manager
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from ryu.controller import event
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LOG = logging.getLogger(__name__)
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class EventQuantumIfaceSet(event.EventBase):
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def __init__(self, iface_id, key, value):
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super(EventQuantumIfaceSet, self).__init__()
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self.iface_id = iface_id
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self.key = key
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self.value = value
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def __str__(self):
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return 'EventQuantumIfaceSet<%s, %s, %s>' % (
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self.iface_id, self.key, self.value)
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class QuantumIfaces(app_manager.RyuApp, dict):
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# iface-id => dict
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# {'iface_id': {
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# 'network_id': net-id,
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# 'ports': [{'datapath_id': dpid, 'ofport': ofport, 'name': name}]
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# }}
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KEY_NETWORK_ID = 'network_id'
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KEY_PORTS = 'ports'
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SUBKEY_DATAPATH_ID = 'datapath_id'
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SUBKEY_OFPORT = 'ofport'
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SUBKEY_NAME = 'name'
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def __init__(self):
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super(QuantumIfaces, self).__init__()
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self.name = 'quantum_ifaces'
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def register(self, iface_id):
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self.setdefault(iface_id, {})
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def unregister(self, iface_id):
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del self[iface_id]
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def get_iface_dict(self, iface_id):
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return self[iface_id]
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def list_keys(self, iface_id):
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return self[iface_id].keys()
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def get_key(self, iface_id, key):
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return self[iface_id][key]
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def _update_key(self, iface_id, key, value):
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if key == self.KEY_PORTS:
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ports = self[iface_id].setdefault(key, [])
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try:
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ports.remove(value)
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except ValueError:
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pass
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ports.append(value)
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else:
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self[iface_id][key] = value
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self.send_event_to_observers(
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EventQuantumIfaceSet(iface_id, key, value))
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def set_key(self, iface_id, key, value):
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iface = self.setdefault(iface_id, {})
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if key in iface:
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raise ValueError('trying to set already existing value '
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'%s %s -> %s', key, iface[key], value)
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self._update_key(iface_id, key, value)
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def update_key(self, iface_id, key, value):
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iface = self.setdefault(iface_id, {})
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if key in iface:
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err = False
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if key == self.KEY_PORTS:
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dpid = value.get(self.SUBKEY_DATAPATH_ID)
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ofport = value.get(self.SUBKEY_OFPORT)
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name = value.get(self.SUBKEY_NAME)
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if not dpid or not ofport or not name:
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raise ValueError(
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'invalid port data: dpid=%s ofport=%s name=%s',
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dpid, ofport, name)
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for p in iface[key]:
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if (p[self.SUBKEY_DATAPATH_ID] == dpid and
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(p[self.SUBKEY_OFPORT] != ofport or
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p[self.SUBKEY_NAME] != name)):
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err = True
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break
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elif iface[key] != value:
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err = True
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if err:
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raise ValueError('unmatched updated %s %s -> %s',
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key, iface[key], value)
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self._update_key(iface_id, key, value)
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def del_key(self, iface_id, key, value=None):
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if iface_id not in self or key not in self[iface_id]:
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return
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if key != self.KEY_PORTS:
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assert value is None
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del self[iface_id][key]
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return
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ports = self[iface_id][key]
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try:
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ports.remove(value)
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except ValueError:
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pass
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if not ports:
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del self[iface_id][key]
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return
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return True
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