192 lines
7.7 KiB
Python
192 lines
7.7 KiB
Python
# Copyright (c) 2016 Cisco Systems 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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from neutron.db import models_v2
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from neutron_lib.db import model_base
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import sqlalchemy as sa
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from sqlalchemy import orm
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from gbpservice.neutron.extensions import cisco_apic
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from gbpservice.neutron.extensions import cisco_apic_l3
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class NetworkExtensionDb(model_base.BASEV2):
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__tablename__ = 'apic_aim_network_extensions'
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network_id = sa.Column(
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sa.String(36), sa.ForeignKey('networks.id', ondelete="CASCADE"),
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primary_key=True)
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external_network_dn = sa.Column(sa.String(1024))
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nat_type = sa.Column(sa.Enum('distributed', 'edge', ''))
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svi = sa.Column(sa.Boolean)
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network = orm.relationship(models_v2.Network,
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backref=orm.backref(
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'aim_extension_mapping', lazy='joined',
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uselist=False, cascade='delete'))
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class NetworkExtensionCidrDb(model_base.BASEV2):
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__tablename__ = 'apic_aim_network_external_cidrs'
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network_id = sa.Column(
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sa.String(36), sa.ForeignKey('networks.id', ondelete="CASCADE"),
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primary_key=True)
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cidr = sa.Column(sa.String(64), primary_key=True)
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class SubnetExtensionDb(model_base.BASEV2):
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__tablename__ = 'apic_aim_subnet_extensions'
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subnet_id = sa.Column(
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sa.String(36), sa.ForeignKey('subnets.id', ondelete="CASCADE"),
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primary_key=True)
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snat_host_pool = sa.Column(sa.Boolean)
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class RouterExtensionContractDb(model_base.BASEV2):
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__tablename__ = 'apic_aim_router_external_contracts'
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router_id = sa.Column(
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sa.String(36), sa.ForeignKey('routers.id', ondelete="CASCADE"),
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primary_key=True)
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contract_name = sa.Column(sa.String(64), primary_key=True)
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provides = sa.Column(sa.Boolean, primary_key=True)
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class ExtensionDbMixin(object):
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def _set_if_not_none(self, res_dict, res_attr, db_attr):
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if db_attr is not None:
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res_dict[res_attr] = db_attr
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def get_network_extn_db(self, session, network_id):
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db_obj = (session.query(NetworkExtensionDb).filter_by(
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network_id=network_id).first())
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db_cidrs = (session.query(NetworkExtensionCidrDb).filter_by(
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network_id=network_id).all())
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result = {}
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if db_obj:
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self._set_if_not_none(result, cisco_apic.EXTERNAL_NETWORK,
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db_obj['external_network_dn'])
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self._set_if_not_none(result, cisco_apic.NAT_TYPE,
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db_obj['nat_type'])
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self._set_if_not_none(result, cisco_apic.SVI, db_obj['svi'])
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if result.get(cisco_apic.EXTERNAL_NETWORK):
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result[cisco_apic.EXTERNAL_CIDRS] = [c['cidr'] for c in db_cidrs]
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return result
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def set_network_extn_db(self, session, network_id, res_dict):
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with session.begin(subtransactions=True):
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db_obj = (session.query(NetworkExtensionDb).filter_by(
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network_id=network_id).first())
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db_obj = db_obj or NetworkExtensionDb(network_id=network_id)
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if cisco_apic.EXTERNAL_NETWORK in res_dict:
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db_obj['external_network_dn'] = (
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res_dict[cisco_apic.EXTERNAL_NETWORK])
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if cisco_apic.NAT_TYPE in res_dict:
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db_obj['nat_type'] = res_dict[cisco_apic.NAT_TYPE]
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if cisco_apic.SVI in res_dict:
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db_obj['svi'] = res_dict[cisco_apic.SVI]
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session.add(db_obj)
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if cisco_apic.EXTERNAL_CIDRS in res_dict:
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self._update_list_attr(session, NetworkExtensionCidrDb, 'cidr',
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res_dict[cisco_apic.EXTERNAL_CIDRS],
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network_id=network_id)
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def get_network_ids_by_ext_net_dn(self, session, dn, lock_update=False):
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ids = session.query(NetworkExtensionDb.network_id).filter_by(
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external_network_dn=dn)
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if lock_update:
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ids = ids.with_lockmode('update')
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return [i[0] for i in ids]
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def get_network_ids_by_l3out_dn(self, session, dn, lock_update=False):
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ids = session.query(NetworkExtensionDb.network_id).filter(
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NetworkExtensionDb.external_network_dn.like(dn + "/%"))
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if lock_update:
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ids = ids.with_lockmode('update')
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return [i[0] for i in ids]
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def get_external_cidrs_by_ext_net_dn(self, session, dn, lock_update=False):
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ctab = NetworkExtensionCidrDb
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ntab = NetworkExtensionDb
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cidrs = session.query(ctab.cidr).join(
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ntab, ntab.network_id == ctab.network_id).filter(
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ntab.external_network_dn == dn).distinct()
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if lock_update:
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cidrs = cidrs.with_lockmode('update')
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return [c[0] for c in cidrs]
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def get_subnet_extn_db(self, session, subnet_id):
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db_obj = (session.query(SubnetExtensionDb).filter_by(
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subnet_id=subnet_id).first())
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result = {}
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if db_obj:
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self._set_if_not_none(result, cisco_apic.SNAT_HOST_POOL,
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db_obj['snat_host_pool'])
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return result
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def set_subnet_extn_db(self, session, subnet_id, res_dict):
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db_obj = (session.query(SubnetExtensionDb).filter_by(
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subnet_id=subnet_id).first())
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db_obj = db_obj or SubnetExtensionDb(subnet_id=subnet_id)
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if cisco_apic.SNAT_HOST_POOL in res_dict:
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db_obj['snat_host_pool'] = res_dict[cisco_apic.SNAT_HOST_POOL]
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session.add(db_obj)
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def get_router_extn_db(self, session, router_id):
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db_contracts = (session.query(RouterExtensionContractDb).filter_by(
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router_id=router_id).all())
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return {cisco_apic_l3.EXTERNAL_PROVIDED_CONTRACTS:
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[c['contract_name'] for c in db_contracts if c['provides']],
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cisco_apic_l3.EXTERNAL_CONSUMED_CONTRACTS:
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[c['contract_name'] for c in db_contracts
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if not c['provides']]}
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def _update_list_attr(self, session, db_model, column,
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new_values, **filters):
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rows = session.query(db_model).filter_by(**filters).all()
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new_values = set(new_values)
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for r in rows:
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if r[column] in new_values:
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new_values.discard(r[column])
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else:
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session.delete(r)
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for v in new_values:
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attr = {column: v}
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attr.update(filters)
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db_obj = db_model(**attr)
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session.add(db_obj)
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def set_router_extn_db(self, session, router_id, res_dict):
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with session.begin(subtransactions=True):
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if cisco_apic_l3.EXTERNAL_PROVIDED_CONTRACTS in res_dict:
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self._update_list_attr(session, RouterExtensionContractDb,
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'contract_name',
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res_dict[cisco_apic_l3.EXTERNAL_PROVIDED_CONTRACTS],
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router_id=router_id, provides=True)
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if cisco_apic_l3.EXTERNAL_CONSUMED_CONTRACTS in res_dict:
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self._update_list_attr(session, RouterExtensionContractDb,
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'contract_name',
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res_dict[cisco_apic_l3.EXTERNAL_CONSUMED_CONTRACTS],
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router_id=router_id, provides=False)
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