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OpenStack Study: models_v2.py**** CubicPower OpenStack Study ****
# vim: tabstop=4 shiftwidth=4 softtabstop=4 # Copyright (c) 2012 OpenStack Foundation. # 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. import sqlalchemy as sa from sqlalchemy import orm from neutron.common import constants from neutron.db import model_base from neutron.openstack.common import uuidutils
**** CubicPower OpenStack Study **** class HasTenant(object): """Tenant mixin, add to subclasses that have a tenant.""" # NOTE(jkoelker) tenant_id is just a free form string ;( tenant_id = sa.Column(sa.String(255))
**** CubicPower OpenStack Study **** class HasId(object): """id mixin, add to subclasses that have an id.""" id = sa.Column(sa.String(36), primary_key=True,
**** CubicPower OpenStack Study **** class HasStatusDescription(object): """Status with description mixin.""" status = sa.Column(sa.String(16), nullable=False) status_description = sa.Column(sa.String(255))
**** CubicPower OpenStack Study **** class IPAvailabilityRange(model_base.BASEV2): """Internal representation of available IPs for Neutron subnets. Allocation - first entry from the range will be allocated. If the first entry is equal to the last entry then this row will be deleted. Recycling ips involves reading the IPAllocationPool and IPAllocation tables and inserting ranges representing available ips. This happens after the final allocation is pulled from this table and a new ip allocation is requested. Any contiguous ranges of available ips will be inserted as a single range. """ allocation_pool_id = sa.Column(sa.String(36), sa.ForeignKey('ipallocationpools.id', ondelete="CASCADE"), nullable=False, primary_key=True) first_ip = sa.Column(sa.String(64), nullable=False, primary_key=True) last_ip = sa.Column(sa.String(64), nullable=False, primary_key=True)
**** CubicPower OpenStack Study **** def __repr__(self): return "%s - %s" % (self.first_ip, self.last_ip)
**** CubicPower OpenStack Study **** class IPAllocationPool(model_base.BASEV2, HasId): """Representation of an allocation pool in a Neutron subnet.""" subnet_id = sa.Column(sa.String(36), sa.ForeignKey('subnets.id', ondelete="CASCADE"), nullable=True) first_ip = sa.Column(sa.String(64), nullable=False) last_ip = sa.Column(sa.String(64), nullable=False) available_ranges = orm.relationship(IPAvailabilityRange, backref='ipallocationpool', lazy="joined", cascade='delete')
**** CubicPower OpenStack Study **** def __repr__(self): return "%s - %s" % (self.first_ip, self.last_ip)
**** CubicPower OpenStack Study **** class IPAllocation(model_base.BASEV2): """Internal representation of allocated IP addresses in a Neutron subnet. """ port_id = sa.Column(sa.String(36), sa.ForeignKey('ports.id', ondelete="CASCADE"), nullable=True) ip_address = sa.Column(sa.String(64), nullable=False, primary_key=True) subnet_id = sa.Column(sa.String(36), sa.ForeignKey('subnets.id', ondelete="CASCADE"), nullable=False, primary_key=True) network_id = sa.Column(sa.String(36), sa.ForeignKey("networks.id", ondelete="CASCADE"), nullable=False, primary_key=True)
**** CubicPower OpenStack Study **** class Route(object): """mixin of a route.""" destination = sa.Column(sa.String(64), nullable=False, primary_key=True) nexthop = sa.Column(sa.String(64), nullable=False, primary_key=True)
**** CubicPower OpenStack Study **** class SubnetRoute(model_base.BASEV2, Route): subnet_id = sa.Column(sa.String(36), sa.ForeignKey('subnets.id', ondelete="CASCADE"), primary_key=True)
**** CubicPower OpenStack Study **** class Port(model_base.BASEV2, HasId, HasTenant): """Represents a port on a Neutron v2 network.""" name = sa.Column(sa.String(255)) network_id = sa.Column(sa.String(36), sa.ForeignKey("networks.id"), nullable=False) fixed_ips = orm.relationship(IPAllocation, backref='ports', lazy='joined') mac_address = sa.Column(sa.String(32), nullable=False) admin_state_up = sa.Column(sa.Boolean(), nullable=False) status = sa.Column(sa.String(16), nullable=False) device_id = sa.Column(sa.String(255), nullable=False) device_owner = sa.Column(sa.String(255), nullable=False)
**** CubicPower OpenStack Study **** def __init__(self, id=None, tenant_id=None, name=None, network_id=None, mac_address=None, admin_state_up=None, status=None, device_id=None, device_owner=None, fixed_ips=None): self.id = id self.tenant_id = tenant_id self.name = name self.network_id = network_id self.mac_address = mac_address self.admin_state_up = admin_state_up self.device_owner = device_owner self.device_id = device_id # Since this is a relationship only set it if one is passed in. if fixed_ips: self.fixed_ips = fixed_ips # NOTE(arosen): status must be set last as an event is triggered on! self.status = status
**** CubicPower OpenStack Study **** class DNSNameServer(model_base.BASEV2): """Internal representation of a DNS nameserver.""" address = sa.Column(sa.String(128), nullable=False, primary_key=True) subnet_id = sa.Column(sa.String(36), sa.ForeignKey('subnets.id', ondelete="CASCADE"), primary_key=True)
**** CubicPower OpenStack Study **** class Subnet(model_base.BASEV2, HasId, HasTenant): """Represents a neutron subnet. When a subnet is created the first and last entries will be created. These are used for the IP allocation. """ name = sa.Column(sa.String(255)) network_id = sa.Column(sa.String(36), sa.ForeignKey('networks.id')) ip_version = sa.Column(sa.Integer, nullable=False) cidr = sa.Column(sa.String(64), nullable=False) gateway_ip = sa.Column(sa.String(64)) allocation_pools = orm.relationship(IPAllocationPool, backref='subnet', lazy="joined", cascade='delete') enable_dhcp = sa.Column(sa.Boolean()) dns_nameservers = orm.relationship(DNSNameServer, backref='subnet', cascade='all, delete, delete-orphan') routes = orm.relationship(SubnetRoute, backref='subnet', cascade='all, delete, delete-orphan') shared = sa.Column(sa.Boolean) ipv6_ra_mode = sa.Column(sa.Enum(constants.IPV6_SLAAC, constants.DHCPV6_STATEFUL, constants.DHCPV6_STATELESS, name='ipv6_modes'), nullable=True) ipv6_address_mode = sa.Column(sa.Enum(constants.IPV6_SLAAC, constants.DHCPV6_STATEFUL, constants.DHCPV6_STATELESS, name='ipv6_modes'), nullable=True)
**** CubicPower OpenStack Study **** class Network(model_base.BASEV2, HasId, HasTenant): """Represents a v2 neutron network.""" name = sa.Column(sa.String(255)) ports = orm.relationship(Port, backref='networks') subnets = orm.relationship(Subnet, backref='networks', lazy="joined") status = sa.Column(sa.String(16)) admin_state_up = sa.Column(sa.Boolean) shared = sa.Column(sa.Boolean)
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