336 lines
12 KiB
Python
336 lines
12 KiB
Python
# Copyright (C) 2018 AT&T
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# Copyright (C) 2015 Ericsson AB
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# Copyright (c) 2015 Gigamon
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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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import sqlalchemy as sa
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from sqlalchemy import orm
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from sqlalchemy.orm import exc
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from neutron.db.models import segment
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from neutron_lib import constants
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from neutron_lib.db import api as db_api
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from neutron_lib.db import model_base
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from neutron_lib.db import model_query
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from neutron_lib.db import utils as db_utils
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from neutron_lib.exceptions import taas as taas_exc
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from neutron_lib.plugins import directory
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from oslo_config import cfg
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from oslo_log import log as logging
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from oslo_utils import uuidutils
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from neutron_taas.extensions import taas as taas_extension
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LOG = logging.getLogger(__name__)
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class TapService(model_base.BASEV2, model_base.HasId,
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model_base.HasProjectNoIndex):
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# Represents a V2 TapService Object
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__tablename__ = 'tap_services'
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name = sa.Column(sa.String(255), nullable=True)
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description = sa.Column(sa.String(1024), nullable=True)
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port_id = sa.Column(sa.String(36), nullable=False)
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status = sa.Column(sa.String(16), nullable=False,
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server_default=constants.ACTIVE)
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class TapFlow(model_base.BASEV2, model_base.HasId,
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model_base.HasProjectNoIndex):
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# Represents a V2 TapFlow Object
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__tablename__ = 'tap_flows'
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name = sa.Column(sa.String(255), nullable=True)
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description = sa.Column(sa.String(1024), nullable=True)
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tap_service_id = sa.Column(sa.String(36),
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sa.ForeignKey("tap_services.id",
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ondelete="CASCADE"),
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nullable=False)
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source_port = sa.Column(sa.String(36), nullable=False)
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direction = sa.Column(sa.Enum('IN', 'OUT', 'BOTH',
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name='tapflows_direction'),
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nullable=False)
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status = sa.Column(sa.String(16), nullable=False,
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server_default=constants.ACTIVE)
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vlan_filter = sa.Column(sa.String(1024), nullable=True)
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class TapIdAssociation(model_base.BASEV2):
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# Internal mapping between a TAP Service and
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# id to be used by the Agents
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__tablename__ = 'tap_id_associations'
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tap_service_id = sa.Column(sa.String(36),
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sa.ForeignKey("tap_services.id",
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ondelete='SET NULL'),
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nullable=True)
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taas_id = sa.Column(sa.Integer, primary_key=True, unique=True)
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tap_service = orm.relationship(
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TapService,
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backref=orm.backref("tap_service_id",
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lazy="joined"),
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primaryjoin='TapService.id==TapIdAssociation.tap_service_id')
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class Taas_db_Mixin(taas_extension.TaasPluginBase):
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def _core_plugin(self):
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return directory.get_plugin()
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@db_api.retry_if_session_inactive()
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@db_api.CONTEXT_READER
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def _get_tap_service(self, context, id):
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try:
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return model_query.get_by_id(context, TapService, id)
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except exc.NoResultFound:
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raise taas_exc.TapServiceNotFound(tap_id=id)
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@db_api.retry_if_session_inactive()
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@db_api.CONTEXT_READER
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def _get_tap_id_association(self, context, tap_service_id):
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try:
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query = model_query.query_with_hooks(context, TapIdAssociation)
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return query.filter(TapIdAssociation.tap_service_id ==
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tap_service_id).one()
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except exc.NoResultFound:
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raise taas_exc.TapServiceNotFound(tap_id=tap_service_id)
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@db_api.CONTEXT_READER
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def _get_tap_flow(self, context, id):
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try:
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return model_query.get_by_id(context, TapFlow, id)
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except exc.NoResultFound:
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raise taas_exc.TapFlowNotFound(flow_id=id)
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def _make_tap_service_dict(self, tap_service, fields=None):
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res = {'id': tap_service['id'],
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'tenant_id': tap_service['tenant_id'],
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'name': tap_service['name'],
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'description': tap_service['description'],
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'port_id': tap_service['port_id'],
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'status': tap_service['status']}
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return db_utils.resource_fields(res, fields)
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def _make_tap_id_association_dict(self, tap_id_association):
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res = {'tap_service_id': tap_id_association['tap_service_id'],
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'taas_id': tap_id_association['taas_id']}
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return res
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def _make_tap_flow_dict(self, tap_flow, fields=None):
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res = {'id': tap_flow['id'],
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'tenant_id': tap_flow['tenant_id'],
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'tap_service_id': tap_flow['tap_service_id'],
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'name': tap_flow['name'],
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'description': tap_flow['description'],
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'source_port': tap_flow['source_port'],
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'direction': tap_flow['direction'],
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'status': tap_flow['status'],
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'vlan_filter': tap_flow['vlan_filter']}
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return db_utils.resource_fields(res, fields)
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@db_api.retry_if_session_inactive()
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@db_api.CONTEXT_READER
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def get_port_network_data(self, context, port):
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ns = context.session.query(
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segment.NetworkSegment.network_id,
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segment.NetworkSegment.physical_network,
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segment.NetworkSegment.network_type
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).filter(
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segment.NetworkSegment.network_id == port['network_id']
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).first()
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if not ns:
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LOG.debug("No Network Segment found for network_id %s",
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port['network_id'])
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return
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ns_data = {
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'physical_network': ns['physical_network'],
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'network_type': ns['network_type']
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}
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return ns_data
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@db_api.retry_if_session_inactive()
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@db_api.CONTEXT_WRITER
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def create_tap_service(self, context, tap_service):
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LOG.debug("create_tap_service() called")
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t_s = tap_service['tap_service']
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tenant_id = t_s['tenant_id']
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tap_service_db = TapService(
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id=uuidutils.generate_uuid(),
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tenant_id=tenant_id,
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name=t_s['name'],
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description=t_s['description'],
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port_id=t_s['port_id'],
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status=constants.DOWN,
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)
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context.session.add(tap_service_db)
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return self._make_tap_service_dict(tap_service_db)
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def _rebuild_taas_id_allocation_range(self, context):
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query = context.session.query(
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TapIdAssociation).all()
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allocate_taas_id_list = [_q.taas_id for _q in query]
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first_taas_id = cfg.CONF.taas.vlan_range_start
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# Exclude range end
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last_taas_id = cfg.CONF.taas.vlan_range_end
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all_taas_id_set = set(range(first_taas_id, last_taas_id))
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vaild_taas_id_set = all_taas_id_set - set(allocate_taas_id_list)
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for _id in vaild_taas_id_set:
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# new taas id
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context.session.add(TapIdAssociation(
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taas_id=_id))
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def _allocate_taas_id_with_tap_service_id(self, context, tap_service_id):
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query = context.session.query(TapIdAssociation).filter_by(
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tap_service_id=None).first()
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if not query:
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self._rebuild_taas_id_allocation_range(context)
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# try again
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query = context.session.query(TapIdAssociation).filter_by(
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tap_service_id=None).first()
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if query:
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query.update({"tap_service_id": tap_service_id})
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return query
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# not found
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raise taas_exc.TapServiceLimitReached()
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@db_api.retry_if_session_inactive()
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@db_api.CONTEXT_WRITER
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def create_tap_id_association(self, context, tap_service_id):
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LOG.debug("create_tap_id_association() called")
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# create the TapIdAssociation object
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# allocate Taas id.
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# if conflict happened, it will raise db.DBDuplicateEntry.
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# this will be retry request again in neutron controller framework.
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# so we just make sure TapIdAssociation field taas_id is unique
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tap_id_association_db = self._allocate_taas_id_with_tap_service_id(
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context, tap_service_id)
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return self._make_tap_id_association_dict(tap_id_association_db)
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@db_api.retry_if_session_inactive()
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@db_api.CONTEXT_WRITER
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def create_tap_flow(self, context, tap_flow):
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LOG.debug("create_tap_flow() called")
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t_f = tap_flow['tap_flow']
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tenant_id = t_f['tenant_id']
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# TODO(Vinay): Check for the tenant_id validation
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# TODO(Vinay): Check for the source port validation
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tap_flow_db = TapFlow(
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id=uuidutils.generate_uuid(),
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tenant_id=tenant_id,
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name=t_f['name'],
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description=t_f['description'],
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tap_service_id=t_f['tap_service_id'],
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source_port=t_f['source_port'],
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direction=t_f['direction'],
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status=constants.DOWN,
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vlan_filter=t_f['vlan_filter'],
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)
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context.session.add(tap_flow_db)
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return self._make_tap_flow_dict(tap_flow_db)
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@db_api.retry_if_session_inactive()
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@db_api.CONTEXT_WRITER
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def delete_tap_service(self, context, id):
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LOG.debug("delete_tap_service() called")
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count = context.session.query(TapService).filter_by(id=id).delete()
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if not count:
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raise taas_exc.TapServiceNotFound(tap_id=id)
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@db_api.CONTEXT_WRITER
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def delete_tap_flow(self, context, id):
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LOG.debug("delete_tap_flow() called")
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count = context.session.query(TapFlow).filter_by(id=id).delete()
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if not count:
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raise taas_exc.TapFlowNotFound(flow_id=id)
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def get_tap_service(self, context, id, fields=None):
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LOG.debug("get_tap_service() called")
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t_s = self._get_tap_service(context, id)
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return self._make_tap_service_dict(t_s, fields)
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def get_tap_id_association(self, context, tap_service_id):
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LOG.debug("get_tap_id_association() called")
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t_a = self._get_tap_id_association(context, tap_service_id)
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return self._make_tap_id_association_dict(t_a)
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@db_api.CONTEXT_READER
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def get_tap_flow(self, context, id, fields=None):
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LOG.debug("get_tap_flow() called")
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t_f = self._get_tap_flow(context, id)
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return self._make_tap_flow_dict(t_f, fields)
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@db_api.retry_if_session_inactive()
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@db_api.CONTEXT_READER
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def get_tap_services(self, context, filters=None, fields=None,
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sorts=None, limit=None, marker=None,
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page_reverse=False):
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LOG.debug("get_tap_services() called")
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return model_query.get_collection(context, TapService,
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self._make_tap_service_dict,
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filters=filters, fields=fields)
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@db_api.retry_if_session_inactive()
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@db_api.CONTEXT_READER
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def get_tap_flows(self, context, filters=None, fields=None,
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sorts=None, limit=None, marker=None,
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page_reverse=False):
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LOG.debug("get_tap_flows() called")
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return model_query.get_collection(context, TapFlow,
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self._make_tap_flow_dict,
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filters=filters, fields=fields)
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@db_api.retry_if_session_inactive()
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@db_api.CONTEXT_READER
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def get_port_details(self, context, port_id):
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port = self._core_plugin().get_port(context, port_id)
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return port
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@db_api.retry_if_session_inactive()
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@db_api.CONTEXT_WRITER
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def update_tap_service(self, context, id, tap_service):
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LOG.debug("update_tap_service() called")
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t_s = tap_service['tap_service']
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tap_service_db = self._get_tap_service(context, id)
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tap_service_db.update(t_s)
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return self._make_tap_service_dict(tap_service_db)
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@db_api.retry_if_session_inactive()
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@db_api.CONTEXT_WRITER
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def update_tap_flow(self, context, id, tap_flow):
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LOG.debug("update_tap_flow() called")
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t_f = tap_flow['tap_flow']
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tap_flow_db = self._get_tap_flow(context, id)
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tap_flow_db.update(t_f)
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return self._make_tap_flow_dict(tap_flow_db)
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