# vim: tabstop=4 shiftwidth=4 softtabstop=4

# Copyright 2013 Cloudbase Solutions SRL
# 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: Alessandro Pilotti, Cloudbase Solutions Srl

from sqlalchemy import Boolean, Column, ForeignKey, Integer, String

from neutron.db.models_v2 import model_base


class VlanAllocation(model_base.BASEV2):
    """Represents allocation state of vlan_id on physical network."""
    __tablename__ = 'hyperv_vlan_allocations'

    physical_network = Column(String(64), nullable=False, primary_key=True)
    vlan_id = Column(Integer, nullable=False, primary_key=True,
                     autoincrement=False)
    allocated = Column(Boolean, nullable=False)

    def __init__(self, physical_network, vlan_id):
        self.physical_network = physical_network
        self.vlan_id = vlan_id
        self.allocated = False


class NetworkBinding(model_base.BASEV2):
    """Represents binding of virtual network to physical realization."""
    __tablename__ = 'hyperv_network_bindings'

    network_id = Column(String(36),
                        ForeignKey('networks.id', ondelete="CASCADE"),
                        primary_key=True)
    network_type = Column(String(32), nullable=False)
    physical_network = Column(String(64))
    segmentation_id = Column(Integer)

    def __init__(self, network_id, network_type, physical_network,
                 segmentation_id):
        self.network_id = network_id
        self.network_type = network_type
        self.physical_network = physical_network
        self.segmentation_id = segmentation_id