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