339 lines
11 KiB
Python
339 lines
11 KiB
Python
# vim: tabstop=4 shiftwidth=4 softtabstop=4
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# Copyright 2013 OpenStack LLC.
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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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import uuid
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from oslo.config import cfg
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from quantum.common import exceptions as q_exc
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from quantum.common import rpc as q_rpc
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from quantum.common import topics
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from quantum.db import api as qdbapi
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from quantum.db.loadbalancer import loadbalancer_db
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from quantum.openstack.common import log as logging
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from quantum.openstack.common import rpc
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from quantum.openstack.common.rpc import proxy
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from quantum.plugins.common import constants
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LOG = logging.getLogger(__name__)
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ACTIVE_PENDING = (
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constants.ACTIVE,
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constants.PENDING_CREATE,
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constants.PENDING_UPDATE
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)
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class LoadBalancerCallbacks(object):
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RPC_API_VERSION = '1.0'
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def __init__(self, plugin):
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self.plugin = plugin
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def create_rpc_dispatcher(self):
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return q_rpc.PluginRpcDispatcher([self])
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def get_ready_devices(self, context, host=None):
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with context.session.begin(subtransactions=True):
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qry = context.session.query(
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loadbalancer_db.Vip, loadbalancer_db.Pool
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)
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qry = qry.filter(loadbalancer_db.Vip.status.in_(ACTIVE_PENDING))
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qry = qry.filter(loadbalancer_db.Pool.status.in_(ACTIVE_PENDING))
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up = True # makes pep8 and sqlalchemy happy
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qry = qry.filter(loadbalancer_db.Vip.admin_state_up == up)
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qry = qry.filter(loadbalancer_db.Pool.admin_state_up == up)
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return [p.id for v, p in qry.all()]
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def get_logical_device(self, context, pool_id=None, activate=True,
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**kwargs):
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with context.session.begin(subtransactions=True):
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qry = context.session.query(loadbalancer_db.Pool)
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qry = qry.filter_by(id=pool_id)
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pool = qry.one()
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if activate:
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# set all resources to active
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if pool.status in ACTIVE_PENDING:
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pool.status = constants.ACTIVE
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if pool.vip.status in ACTIVE_PENDING:
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pool.vip.status = constants.ACTIVE
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for m in pool.members:
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if m.status in ACTIVE_PENDING:
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m.status = constants.ACTIVE
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for hm in pool.monitors:
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if hm.monitor.status in ACTIVE_PENDING:
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hm.monitor.status = constants.ACTIVE
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if (pool.status != constants.ACTIVE
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or pool.vip.status != constants.ACTIVE):
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raise Exception(_('Expected active pool and vip'))
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retval = {}
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retval['pool'] = self.plugin._make_pool_dict(pool)
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retval['vip'] = self.plugin._make_vip_dict(pool.vip)
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retval['vip']['port'] = (
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self.plugin._core_plugin._make_port_dict(pool.vip.port)
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)
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for fixed_ip in retval['vip']['port']['fixed_ips']:
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fixed_ip['subnet'] = (
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self.plugin._core_plugin.get_subnet(
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context,
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fixed_ip['subnet_id']
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)
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)
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retval['members'] = [
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self.plugin._make_member_dict(m)
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for m in pool.members if m.status == constants.ACTIVE
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]
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retval['healthmonitors'] = [
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self.plugin._make_health_monitor_dict(hm.monitor)
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for hm in pool.monitors
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if hm.monitor.status == constants.ACTIVE
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]
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return retval
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def pool_destroyed(self, context, pool_id=None, host=None):
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"""Agent confirmation hook that a pool has been destroyed.
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This method exists for subclasses to change the deletion
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behavior.
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"""
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pass
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def plug_vip_port(self, context, port_id=None, host=None):
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if not port_id:
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return
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port = self.plugin._core_plugin.get_port(
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context,
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port_id
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)
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port['admin_state_up'] = True
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port['device_owner'] = 'quantum:' + constants.LOADBALANCER
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port['device_id'] = str(uuid.uuid5(uuid.NAMESPACE_DNS, str(host)))
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self.plugin._core_plugin.update_port(
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context,
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port_id,
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{'port': port}
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)
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def unplug_vip_port(self, context, port_id=None, host=None):
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if not port_id:
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return
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port = self.plugin._core_plugin.get_port(
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context,
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port_id
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)
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port['admin_state_up'] = False
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port['device_owner'] = ''
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port['device_id'] = ''
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try:
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self.plugin._core_plugin.update_port(
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context,
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port_id,
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{'port': port}
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)
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except q_exc.PortNotFound:
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msg = _('Unable to find port %s to unplug. This can occur when '
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'the Vip has been deleted first.')
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LOG.debug(msg, port_id)
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def update_pool_stats(self, context, pool_id=None, stats=None, host=None):
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# TODO (markmcclain): add stats collection
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pass
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class LoadBalancerAgentApi(proxy.RpcProxy):
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"""Plugin side of plugin to agent RPC API."""
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API_VERSION = '1.0'
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def __init__(self, topic, host):
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super(LoadBalancerAgentApi, self).__init__(topic, self.API_VERSION)
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self.host = host
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def reload_pool(self, context, pool_id):
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return self.cast(
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context,
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self.make_msg('reload_pool', pool_id=pool_id, host=self.host),
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topic=self.topic
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)
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def destroy_pool(self, context, pool_id):
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return self.cast(
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context,
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self.make_msg('destroy_pool', pool_id=pool_id, host=self.host),
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topic=self.topic
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)
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def modify_pool(self, context, pool_id):
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return self.cast(
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context,
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self.make_msg('modify_pool', pool_id=pool_id, host=self.host),
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topic=self.topic
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)
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class LoadBalancerPlugin(loadbalancer_db.LoadBalancerPluginDb):
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"""
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Implementation of the Quantum Loadbalancer Service Plugin.
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This class manages the workflow of LBaaS request/response.
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Most DB related works are implemented in class
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loadbalancer_db.LoadBalancerPluginDb.
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"""
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supported_extension_aliases = ["lbaas"]
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def __init__(self):
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"""
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Do the initialization for the loadbalancer service plugin here.
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"""
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qdbapi.register_models()
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self.callbacks = LoadBalancerCallbacks(self)
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self.conn = rpc.create_connection(new=True)
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self.conn.create_consumer(
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topics.LOADBALANCER_PLUGIN,
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self.callbacks.create_rpc_dispatcher(),
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fanout=False)
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self.conn.consume_in_thread()
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self.agent_rpc = LoadBalancerAgentApi(
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topics.LOADBALANCER_AGENT,
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cfg.CONF.host
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)
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def get_plugin_type(self):
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return constants.LOADBALANCER
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def get_plugin_description(self):
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return "Quantum LoadBalancer Service Plugin"
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def create_vip(self, context, vip):
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vip['vip']['status'] = constants.PENDING_CREATE
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v = super(LoadBalancerPlugin, self).create_vip(context, vip)
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self.agent_rpc.reload_pool(context, v['pool_id'])
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return v
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def update_vip(self, context, id, vip):
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if 'status' not in vip['vip']:
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vip['vip']['status'] = constants.PENDING_UPDATE
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v = super(LoadBalancerPlugin, self).update_vip(context, id, vip)
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if v['status'] in ACTIVE_PENDING:
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self.agent_rpc.reload_pool(context, v['pool_id'])
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else:
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self.agent_rpc.destroy_pool(context, v['pool_id'])
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return v
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def delete_vip(self, context, id):
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vip = self.get_vip(context, id)
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super(LoadBalancerPlugin, self).delete_vip(context, id)
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self.agent_rpc.destroy_pool(context, vip['pool_id'])
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pass
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def create_pool(self, context, pool):
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p = super(LoadBalancerPlugin, self).create_pool(context, pool)
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# don't notify here because a pool needs a vip to be useful
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return p
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def update_pool(self, context, id, pool):
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if 'status' not in pool['pool']:
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pool['pool']['status'] = constants.PENDING_UPDATE
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p = super(LoadBalancerPlugin, self).update_pool(context, id, pool)
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if p['status'] in ACTIVE_PENDING:
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self.agent_rpc.reload_pool(context, p['id'])
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else:
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self.agent_rpc.destroy_pool(context, p['id'])
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return p
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def delete_pool(self, context, id):
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super(LoadBalancerPlugin, self).delete_pool(context, id)
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self.agent_rpc.destroy_pool(context, id)
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def create_member(self, context, member):
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m = super(LoadBalancerPlugin, self).create_member(context, member)
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self.agent_rpc.modify_pool(context, m['pool_id'])
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return m
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def update_member(self, context, id, member):
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if 'status' not in member['member']:
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member['member']['status'] = constants.PENDING_UPDATE
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m = super(LoadBalancerPlugin, self).update_member(context, id, member)
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self.agent_rpc.modify_pool(context, m['pool_id'])
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return m
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def delete_member(self, context, id):
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m = self.get_member(context, id)
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super(LoadBalancerPlugin, self).delete_member(context, id)
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self.agent_rpc.modify_pool(context, m['pool_id'])
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def update_health_monitor(self, context, id, health_monitor):
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if 'status' not in health_monitor['health_monitor']:
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health_monitor['health_monitor']['status'] = (
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constants.PENDING_UPDATE
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)
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hm = super(LoadBalancerPlugin, self).update_health_monitor(
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context,
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id,
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health_monitor
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)
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with context.session.begin(subtransactions=True):
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qry = context.session.query(
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loadbalancer_db.PoolMonitorAssociation
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)
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qry = qry.filter_by(monitor_id=hm['id'])
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for assoc in qry.all():
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self.agent_rpc.modify_pool(context, assoc['pool_id'])
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return hm
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def delete_health_monitor(self, context, id):
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with context.session.begin(subtransactions=True):
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qry = context.session.query(
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loadbalancer_db.PoolMonitorAssociation
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)
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qry = qry.filter_by(monitor_id=id)
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pool_ids = [a['pool_id'] for a in qry.all()]
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super(LoadBalancerPlugin, self).delete_health_monitor(context, id)
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for pid in pool_ids:
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self.agent_rpc.modify_pool(context, pid)
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def create_pool_health_monitor(self, context, health_monitor, pool_id):
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retval = super(LoadBalancerPlugin, self).create_pool_health_monitor(
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context,
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health_monitor,
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pool_id
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)
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self.agent_rpc.modify_pool(context, pool_id)
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return retval
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