286 lines
10 KiB
Python
286 lines
10 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 neutron_lib import constants as n_const
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from oslo_db import exception as db_exc
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from oslo_log import log
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from oslo_utils import uuidutils
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import six
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from sqlalchemy import or_
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from sqlalchemy.orm import exc
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from neutron._i18n import _LE
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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.db import segments_db
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from neutron.extensions import portbindings
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from neutron import manager
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from neutron.plugins.ml2 import models
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LOG = log.getLogger(__name__)
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# limit the number of port OR LIKE statements in one query
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MAX_PORTS_PER_QUERY = 500
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# The API methods from segments_db
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add_network_segment = segments_db.add_network_segment
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get_network_segments = segments_db.get_network_segments
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get_networks_segments = segments_db.get_networks_segments
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get_segment_by_id = segments_db.get_segment_by_id
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get_dynamic_segment = segments_db.get_dynamic_segment
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delete_network_segment = segments_db.delete_network_segment
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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 set_binding_levels(session, levels):
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if levels:
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for level in levels:
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session.add(level)
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LOG.debug("For port %(port_id)s, host %(host)s, "
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"set binding levels %(levels)s",
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{'port_id': levels[0].port_id,
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'host': levels[0].host,
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'levels': levels})
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else:
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LOG.debug("Attempted to set empty binding levels")
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def get_binding_levels(session, port_id, host):
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if host:
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result = (session.query(models.PortBindingLevel).
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filter_by(port_id=port_id, host=host).
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order_by(models.PortBindingLevel.level).
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all())
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LOG.debug("For port %(port_id)s, host %(host)s, "
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"got binding levels %(levels)s",
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{'port_id': port_id,
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'host': host,
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'levels': result})
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return result
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def clear_binding_levels(session, port_id, host):
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if host:
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(session.query(models.PortBindingLevel).
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filter_by(port_id=port_id, host=host).
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delete())
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LOG.debug("For port %(port_id)s, host %(host)s, "
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"cleared binding levels",
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{'port_id': port_id,
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'host': host})
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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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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_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 transaction."""
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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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enable_eagerloads(False).
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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(_LE("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(context, device_mac):
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LOG.debug("get_port_from_device_mac() called for mac %s", device_mac)
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qry = context.session.query(models_v2.Port).filter_by(
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mac_address=device_mac)
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return qry.first()
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def get_ports_and_sgs(context, port_ids):
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"""Get ports from database with security group info."""
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# break large queries into smaller parts
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if len(port_ids) > MAX_PORTS_PER_QUERY:
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LOG.debug("Number of ports %(pcount)s exceeds the maximum per "
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"query %(maxp)s. Partitioning queries.",
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{'pcount': len(port_ids), 'maxp': MAX_PORTS_PER_QUERY})
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return (get_ports_and_sgs(context, port_ids[:MAX_PORTS_PER_QUERY]) +
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get_ports_and_sgs(context, port_ids[MAX_PORTS_PER_QUERY:]))
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LOG.debug("get_ports_and_sgs() called for port_ids %s", port_ids)
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if not port_ids:
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# if port_ids is empty, avoid querying to DB to ask it for nothing
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return []
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ports_to_sg_ids = get_sg_ids_grouped_by_port(context, port_ids)
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return [make_port_dict_with_security_groups(port, sec_groups)
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for port, sec_groups in six.iteritems(ports_to_sg_ids)]
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def get_sg_ids_grouped_by_port(context, port_ids):
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sg_ids_grouped_by_port = {}
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sg_binding_port = sg_db.SecurityGroupPortBinding.port_id
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with context.session.begin(subtransactions=True):
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# partial UUIDs must be individually matched with startswith.
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# full UUIDs may be matched directly in an IN statement
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partial_uuids = set(port_id for port_id in port_ids
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if not uuidutils.is_uuid_like(port_id))
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full_uuids = set(port_ids) - partial_uuids
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or_criteria = [models_v2.Port.id.startswith(port_id)
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for port_id in partial_uuids]
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if full_uuids:
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or_criteria.append(models_v2.Port.id.in_(full_uuids))
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query = context.session.query(
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models_v2.Port, 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(or_(*or_criteria))
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for port, sg_id in query:
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if port not in sg_ids_grouped_by_port:
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sg_ids_grouped_by_port[port] = []
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if sg_id:
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sg_ids_grouped_by_port[port].append(sg_id)
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return sg_ids_grouped_by_port
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def make_port_dict_with_security_groups(port, sec_groups):
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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'] = sec_groups
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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(session, port_id):
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try:
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with session.begin(subtransactions=True):
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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(_LE("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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