103 lines
3.2 KiB
Python
103 lines
3.2 KiB
Python
# vim: tabstop=4 shiftwidth=4 softtabstop=4
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# Copyright 2011 Nicira Networks, Inc.
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# All Rights Reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# 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, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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# @author: Somik Behera, Nicira Networks, Inc.
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# @author: Brad Hall, Nicira Networks, Inc.
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# @author: Dan Wendlandt, Nicira Networks, Inc.
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import uuid
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from sqlalchemy import Column, String, ForeignKey
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from sqlalchemy.ext.declarative import declarative_base
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from sqlalchemy.orm import relation, object_mapper
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BASE = declarative_base()
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class QuantumBase(object):
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"""Base class for Quantum Models."""
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__table_args__ = {'mysql_engine': 'InnoDB'}
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def __setitem__(self, key, value):
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setattr(self, key, value)
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def __getitem__(self, key):
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return getattr(self, key)
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def get(self, key, default=None):
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return getattr(self, key, default)
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def __iter__(self):
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self._i = iter(object_mapper(self).columns)
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return self
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def next(self):
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n = self._i.next().name
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return n, getattr(self, n)
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def update(self, values):
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"""Make the model object behave like a dict"""
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for k, v in values.iteritems():
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setattr(self, k, v)
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def iteritems(self):
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"""Make the model object behave like a dict.
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Includes attributes from joins."""
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local = dict(self)
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joined = dict([(k, v) for k, v in self.__dict__.iteritems()
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if not k[0] == '_'])
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local.update(joined)
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return local.iteritems()
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class Port(BASE, QuantumBase):
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"""Represents a port on a quantum network"""
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__tablename__ = 'ports'
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uuid = Column(String(255), primary_key=True)
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network_id = Column(String(255), ForeignKey("networks.uuid"),
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nullable=False)
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interface_id = Column(String(255))
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# Port state - Hardcoding string value at the moment
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state = Column(String(8))
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def __init__(self, network_id):
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self.uuid = str(uuid.uuid4())
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self.network_id = network_id
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self.state = "DOWN"
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def __repr__(self):
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return "<Port(%s,%s,%s,%s)>" % (self.uuid, self.network_id,
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self.state, self.interface_id)
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class Network(BASE, QuantumBase):
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"""Represents a quantum network"""
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__tablename__ = 'networks'
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uuid = Column(String(255), primary_key=True)
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tenant_id = Column(String(255), nullable=False)
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name = Column(String(255))
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ports = relation(Port, order_by=Port.uuid, backref="network")
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def __init__(self, tenant_id, name):
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self.uuid = str(uuid.uuid4())
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self.tenant_id = tenant_id
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self.name = name
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def __repr__(self):
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return "<Network(%s,%s,%s)>" % \
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(self.uuid, self.name, self.tenant_id)
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