290 lines
11 KiB
Python
290 lines
11 KiB
Python
# Copyright (c) 2013 OpenStack Foundation
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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 sqlalchemy.orm import exc
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from oslo.db import exception as db_exc
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from neutron.common import constants as n_const
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from neutron.db import api as db_api
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from neutron.db import models_v2
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from neutron.db import securitygroups_db as sg_db
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from neutron.extensions import portbindings
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from neutron import manager
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from neutron.openstack.common import log
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from neutron.openstack.common import uuidutils
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from neutron.plugins.ml2 import driver_api as api
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from neutron.plugins.ml2 import models
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LOG = log.getLogger(__name__)
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def _make_segment_dict(record):
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"""Make a segment dictionary out of a DB record."""
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return {api.ID: record.id,
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api.NETWORK_TYPE: record.network_type,
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api.PHYSICAL_NETWORK: record.physical_network,
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api.SEGMENTATION_ID: record.segmentation_id}
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def add_network_segment(session, network_id, segment, segment_index=0,
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is_dynamic=False):
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with session.begin(subtransactions=True):
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record = models.NetworkSegment(
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id=uuidutils.generate_uuid(),
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network_id=network_id,
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network_type=segment.get(api.NETWORK_TYPE),
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physical_network=segment.get(api.PHYSICAL_NETWORK),
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segmentation_id=segment.get(api.SEGMENTATION_ID),
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segment_index=segment_index,
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is_dynamic=is_dynamic
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)
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session.add(record)
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segment[api.ID] = record.id
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LOG.info(_("Added segment %(id)s of type %(network_type)s for network"
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" %(network_id)s"),
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{'id': record.id,
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'network_type': record.network_type,
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'network_id': record.network_id})
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def get_network_segments(session, network_id, filter_dynamic=False):
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with session.begin(subtransactions=True):
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query = (session.query(models.NetworkSegment).
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filter_by(network_id=network_id).
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order_by(models.NetworkSegment.segment_index))
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if filter_dynamic is not None:
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query = query.filter_by(is_dynamic=filter_dynamic)
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records = query.all()
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return [_make_segment_dict(record) for record in records]
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def get_segment_by_id(session, segment_id):
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with session.begin(subtransactions=True):
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try:
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record = (session.query(models.NetworkSegment).
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filter_by(id=segment_id).
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one())
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return _make_segment_dict(record)
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except exc.NoResultFound:
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return
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def get_dynamic_segment(session, network_id, physical_network=None,
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segmentation_id=None):
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"""Return a dynamic segment for the filters provided if one exists."""
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with session.begin(subtransactions=True):
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query = (session.query(models.NetworkSegment).
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filter_by(network_id=network_id, is_dynamic=True))
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if physical_network:
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query = query.filter_by(physical_network=physical_network)
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if segmentation_id:
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query = query.filter_by(segmentation_id=segmentation_id)
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record = query.first()
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if record:
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return _make_segment_dict(record)
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else:
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LOG.debug("No dynamic segment %s found for "
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"Network:%(network_id)s, "
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"Physical network:%(physnet)s, "
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"segmentation_id:%(segmentation_id)s",
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{'network_id': network_id,
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'physnet': physical_network,
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'segmentation_id': segmentation_id})
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return None
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def delete_network_segment(session, segment_id):
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"""Release a dynamic segment for the params provided if one exists."""
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with session.begin(subtransactions=True):
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(session.query(models.NetworkSegment).
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filter_by(id=segment_id).delete())
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def add_port_binding(session, port_id):
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with session.begin(subtransactions=True):
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record = models.PortBinding(
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port_id=port_id,
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vif_type=portbindings.VIF_TYPE_UNBOUND)
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session.add(record)
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return record
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def get_locked_port_and_binding(session, port_id):
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"""Get port and port binding records for update within transaction."""
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try:
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# REVISIT(rkukura): We need the Port and PortBinding records
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# to both be added to the session and locked for update. A
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# single joined query should work, but the combination of left
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# outer joins and postgresql doesn't seem to work.
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port = (session.query(models_v2.Port).
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enable_eagerloads(False).
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filter_by(id=port_id).
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with_lockmode('update').
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one())
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binding = (session.query(models.PortBinding).
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enable_eagerloads(False).
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filter_by(port_id=port_id).
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with_lockmode('update').
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one())
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return port, binding
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except exc.NoResultFound:
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return None, None
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def ensure_dvr_port_binding(session, port_id, host, router_id=None):
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record = (session.query(models.DVRPortBinding).
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filter_by(port_id=port_id, host=host).first())
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if record:
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return record
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try:
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with session.begin(subtransactions=True):
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record = models.DVRPortBinding(
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port_id=port_id,
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host=host,
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router_id=router_id,
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vif_type=portbindings.VIF_TYPE_UNBOUND,
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vnic_type=portbindings.VNIC_NORMAL,
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cap_port_filter=False,
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status=n_const.PORT_STATUS_DOWN)
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session.add(record)
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return record
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except db_exc.DBDuplicateEntry:
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LOG.debug("DVR Port %s already bound", port_id)
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return (session.query(models.DVRPortBinding).
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filter_by(port_id=port_id, host=host).one())
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def delete_dvr_port_binding(session, port_id, host):
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with session.begin(subtransactions=True):
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(session.query(models.DVRPortBinding).
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filter_by(port_id=port_id, host=host).
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delete(synchronize_session=False))
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def delete_dvr_port_binding_if_stale(session, binding):
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if not binding.router_id and binding.status == n_const.PORT_STATUS_DOWN:
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with session.begin(subtransactions=True):
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LOG.debug("DVR: Deleting binding %s", binding)
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session.delete(binding)
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def get_port(session, port_id):
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"""Get port record for update within transcation."""
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with session.begin(subtransactions=True):
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try:
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record = (session.query(models_v2.Port).
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filter(models_v2.Port.id.startswith(port_id)).
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one())
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return record
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except exc.NoResultFound:
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return
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except exc.MultipleResultsFound:
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LOG.error(_("Multiple ports have port_id starting with %s"),
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port_id)
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return
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def get_port_from_device_mac(device_mac):
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LOG.debug(_("get_port_from_device_mac() called for mac %s"), device_mac)
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session = db_api.get_session()
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qry = session.query(models_v2.Port).filter_by(mac_address=device_mac)
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return qry.first()
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def get_port_and_sgs(port_id):
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"""Get port from database with security group info."""
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LOG.debug(_("get_port_and_sgs() called for port_id %s"), port_id)
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session = db_api.get_session()
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sg_binding_port = sg_db.SecurityGroupPortBinding.port_id
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with session.begin(subtransactions=True):
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query = session.query(models_v2.Port,
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sg_db.SecurityGroupPortBinding.security_group_id)
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query = query.outerjoin(sg_db.SecurityGroupPortBinding,
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models_v2.Port.id == sg_binding_port)
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query = query.filter(models_v2.Port.id.startswith(port_id))
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port_and_sgs = query.all()
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if not port_and_sgs:
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return
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port = port_and_sgs[0][0]
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plugin = manager.NeutronManager.get_plugin()
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port_dict = plugin._make_port_dict(port)
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port_dict['security_groups'] = [
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sg_id for port_, sg_id in port_and_sgs if sg_id]
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port_dict['security_group_rules'] = []
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port_dict['security_group_source_groups'] = []
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port_dict['fixed_ips'] = [ip['ip_address']
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for ip in port['fixed_ips']]
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return port_dict
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def get_port_binding_host(port_id):
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session = db_api.get_session()
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with session.begin(subtransactions=True):
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try:
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query = (session.query(models.PortBinding).
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filter(models.PortBinding.port_id.startswith(port_id)).
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one())
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except exc.NoResultFound:
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LOG.debug(_("No binding found for port %(port_id)s"),
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{'port_id': port_id})
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return
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except exc.MultipleResultsFound:
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LOG.error(_("Multiple ports have port_id starting with %s"),
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port_id)
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return
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return query.host
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def generate_dvr_port_status(session, port_id):
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# an OR'ed value of status assigned to parent port from the
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# dvrportbinding bucket
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query = session.query(models.DVRPortBinding)
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final_status = n_const.PORT_STATUS_BUILD
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for bind in query.filter(models.DVRPortBinding.port_id == port_id):
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if bind.status == n_const.PORT_STATUS_ACTIVE:
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return bind.status
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elif bind.status == n_const.PORT_STATUS_DOWN:
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final_status = bind.status
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return final_status
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def get_dvr_port_binding_by_host(session, port_id, host):
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with session.begin(subtransactions=True):
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binding = (session.query(models.DVRPortBinding).
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filter(models.DVRPortBinding.port_id.startswith(port_id),
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models.DVRPortBinding.host == host).first())
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if not binding:
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LOG.debug("No binding for DVR port %(port_id)s with host "
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"%(host)s", {'port_id': port_id, 'host': host})
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return binding
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def get_dvr_port_bindings(session, port_id):
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with session.begin(subtransactions=True):
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bindings = (session.query(models.DVRPortBinding).
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filter(models.DVRPortBinding.port_id.startswith(port_id)).
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all())
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if not bindings:
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LOG.debug("No bindings for DVR port %s", port_id)
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return bindings
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