2d4821c8c0
also fixes branch in migrations Fixes bug 1166395 Change-Id: I451603cf152d84c750edb6fb1da59b4c7563cbce
246 lines
9.3 KiB
Python
246 lines
9.3 KiB
Python
#
|
|
# Copyright 2013 Radware LTD.
|
|
#
|
|
# Licensed under the Apache License, Version 2.0 (the "License"); you may
|
|
# not use this file except in compliance with the License. You may obtain
|
|
# a copy of the License at
|
|
#
|
|
# http://www.apache.org/licenses/LICENSE-2.0
|
|
#
|
|
# Unless required by applicable law or agreed to in writing, software
|
|
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
|
|
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
|
|
# License for the specific language governing permissions and limitations
|
|
# under the License.
|
|
#
|
|
# @author: Avishay Balderman, Radware
|
|
|
|
from oslo.config import cfg
|
|
|
|
from neutron.common import legacy
|
|
from neutron.db import api as qdbapi
|
|
from neutron.db.loadbalancer import loadbalancer_db
|
|
from neutron.openstack.common import importutils
|
|
from neutron.openstack.common import log as logging
|
|
from neutron.plugins.common import constants
|
|
from neutron.services.loadbalancer import agent_scheduler
|
|
|
|
LOG = logging.getLogger(__name__)
|
|
|
|
DEFAULT_DRIVER = ("neutron.services.loadbalancer.drivers.haproxy"
|
|
".plugin_driver.HaproxyOnHostPluginDriver")
|
|
|
|
lbaas_plugin_opts = [
|
|
cfg.StrOpt('driver_fqn',
|
|
default=DEFAULT_DRIVER,
|
|
help=_('LBaaS driver Fully Qualified Name'))
|
|
]
|
|
|
|
cfg.CONF.register_opts(lbaas_plugin_opts, "LBAAS")
|
|
legacy.override_config(cfg.CONF, [('LBAAS', 'driver_fqn')])
|
|
|
|
|
|
class LoadBalancerPlugin(loadbalancer_db.LoadBalancerPluginDb,
|
|
agent_scheduler.LbaasAgentSchedulerDbMixin):
|
|
|
|
"""Implementation of the Neutron Loadbalancer Service Plugin.
|
|
|
|
This class manages the workflow of LBaaS request/response.
|
|
Most DB related works are implemented in class
|
|
loadbalancer_db.LoadBalancerPluginDb.
|
|
"""
|
|
supported_extension_aliases = ["lbaas", "lbaas_agent_scheduler"]
|
|
|
|
# lbaas agent notifiers to handle agent update operations;
|
|
# can be updated by plugin drivers while loading;
|
|
# will be extracted by neutron manager when loading service plugins;
|
|
agent_notifiers = {}
|
|
|
|
def __init__(self):
|
|
"""Initialization for the loadbalancer service plugin."""
|
|
|
|
qdbapi.register_models()
|
|
self._load_drivers()
|
|
|
|
def _load_drivers(self):
|
|
"""Loads plugin-driver from configuration.
|
|
|
|
That method will later leverage service type framework
|
|
"""
|
|
try:
|
|
self.driver = importutils.import_object(
|
|
cfg.CONF.LBAAS.driver_fqn, self
|
|
)
|
|
except ImportError:
|
|
LOG.exception(_("Error loading LBaaS driver %s"),
|
|
cfg.CONF.LBAAS.driver_fqn)
|
|
|
|
def get_plugin_type(self):
|
|
return constants.LOADBALANCER
|
|
|
|
def get_plugin_description(self):
|
|
return "Neutron LoadBalancer Service Plugin"
|
|
|
|
def create_vip(self, context, vip):
|
|
v = super(LoadBalancerPlugin, self).create_vip(context, vip)
|
|
self.driver.create_vip(context, v)
|
|
return v
|
|
|
|
def update_vip(self, context, id, vip):
|
|
if 'status' not in vip['vip']:
|
|
vip['vip']['status'] = constants.PENDING_UPDATE
|
|
old_vip = self.get_vip(context, id)
|
|
v = super(LoadBalancerPlugin, self).update_vip(context, id, vip)
|
|
self.driver.update_vip(context, old_vip, v)
|
|
return v
|
|
|
|
def _delete_db_vip(self, context, id):
|
|
# proxy the call until plugin inherits from DBPlugin
|
|
super(LoadBalancerPlugin, self).delete_vip(context, id)
|
|
|
|
def delete_vip(self, context, id):
|
|
self.update_status(context, loadbalancer_db.Vip,
|
|
id, constants.PENDING_DELETE)
|
|
v = self.get_vip(context, id)
|
|
self.driver.delete_vip(context, v)
|
|
|
|
def create_pool(self, context, pool):
|
|
p = super(LoadBalancerPlugin, self).create_pool(context, pool)
|
|
self.driver.create_pool(context, p)
|
|
return p
|
|
|
|
def update_pool(self, context, id, pool):
|
|
if 'status' not in pool['pool']:
|
|
pool['pool']['status'] = constants.PENDING_UPDATE
|
|
old_pool = self.get_pool(context, id)
|
|
p = super(LoadBalancerPlugin, self).update_pool(context, id, pool)
|
|
self.driver.update_pool(context, old_pool, p)
|
|
return p
|
|
|
|
def _delete_db_pool(self, context, id):
|
|
# proxy the call until plugin inherits from DBPlugin
|
|
super(LoadBalancerPlugin, self).delete_pool(context, id)
|
|
|
|
def delete_pool(self, context, id):
|
|
self.update_status(context, loadbalancer_db.Pool,
|
|
id, constants.PENDING_DELETE)
|
|
p = self.get_pool(context, id)
|
|
self.driver.delete_pool(context, p)
|
|
|
|
def create_member(self, context, member):
|
|
m = super(LoadBalancerPlugin, self).create_member(context, member)
|
|
self.driver.create_member(context, m)
|
|
return m
|
|
|
|
def update_member(self, context, id, member):
|
|
if 'status' not in member['member']:
|
|
member['member']['status'] = constants.PENDING_UPDATE
|
|
old_member = self.get_member(context, id)
|
|
m = super(LoadBalancerPlugin, self).update_member(context, id, member)
|
|
self.driver.update_member(context, old_member, m)
|
|
return m
|
|
|
|
def _delete_db_member(self, context, id):
|
|
# proxy the call until plugin inherits from DBPlugin
|
|
super(LoadBalancerPlugin, self).delete_member(context, id)
|
|
|
|
def delete_member(self, context, id):
|
|
self.update_status(context, loadbalancer_db.Member,
|
|
id, constants.PENDING_DELETE)
|
|
m = self.get_member(context, id)
|
|
self.driver.delete_member(context, m)
|
|
|
|
def create_health_monitor(self, context, health_monitor):
|
|
# no PENDING_CREATE status sinse healthmon is shared DB object
|
|
hm = super(LoadBalancerPlugin, self).create_health_monitor(
|
|
context,
|
|
health_monitor
|
|
)
|
|
self.driver.create_health_monitor(context, hm)
|
|
return hm
|
|
|
|
def update_health_monitor(self, context, id, health_monitor):
|
|
if 'status' not in health_monitor['health_monitor']:
|
|
health_monitor['health_monitor']['status'] = (
|
|
constants.PENDING_UPDATE
|
|
)
|
|
old_hm = self.get_health_monitor(context, id)
|
|
hm = super(LoadBalancerPlugin, self).update_health_monitor(
|
|
context,
|
|
id,
|
|
health_monitor
|
|
)
|
|
|
|
with context.session.begin(subtransactions=True):
|
|
qry = context.session.query(
|
|
loadbalancer_db.PoolMonitorAssociation
|
|
).filter_by(monitor_id=hm['id'])
|
|
for assoc in qry:
|
|
self.driver.update_health_monitor(context, old_hm,
|
|
hm, assoc['pool_id'])
|
|
return hm
|
|
|
|
def _delete_db_pool_health_monitor(self, context, hm_id, pool_id):
|
|
super(LoadBalancerPlugin, self).delete_pool_health_monitor(context,
|
|
hm_id,
|
|
pool_id)
|
|
|
|
def _delete_db_health_monitor(self, context, id):
|
|
super(LoadBalancerPlugin, self).delete_health_monitor(context, id)
|
|
|
|
def delete_health_monitor(self, context, id):
|
|
with context.session.begin(subtransactions=True):
|
|
hm = self.get_health_monitor(context, id)
|
|
qry = context.session.query(
|
|
loadbalancer_db.PoolMonitorAssociation
|
|
).filter_by(monitor_id=id)
|
|
for assoc in qry:
|
|
self.driver.delete_pool_health_monitor(context,
|
|
hm,
|
|
assoc['pool_id'])
|
|
self.driver.delete_health_monitor(context, hm)
|
|
|
|
def create_pool_health_monitor(self, context, health_monitor, pool_id):
|
|
retval = super(LoadBalancerPlugin, self).create_pool_health_monitor(
|
|
context,
|
|
health_monitor,
|
|
pool_id
|
|
)
|
|
self.driver.create_pool_health_monitor(
|
|
context, health_monitor, pool_id)
|
|
return retval
|
|
|
|
def delete_pool_health_monitor(self, context, id, pool_id):
|
|
self.update_pool_health_monitor(context, id, pool_id,
|
|
constants.PENDING_DELETE)
|
|
hm = self.get_health_monitor(context, id)
|
|
self.driver.delete_pool_health_monitor(
|
|
context, hm, pool_id)
|
|
|
|
def stats(self, context, pool_id):
|
|
stats_data = self.driver.stats(context, pool_id)
|
|
# if we get something from the driver -
|
|
# update the db and return the value from db
|
|
# else - return what we have in db
|
|
if stats_data:
|
|
super(LoadBalancerPlugin, self).update_pool_stats(
|
|
context,
|
|
pool_id,
|
|
stats_data
|
|
)
|
|
return super(LoadBalancerPlugin, self).stats(context,
|
|
pool_id)
|
|
|
|
def populate_vip_graph(self, context, vip):
|
|
"""Populate the vip with: pool, members, healthmonitors."""
|
|
|
|
pool = self.get_pool(context, vip['pool_id'])
|
|
vip['pool'] = pool
|
|
vip['members'] = [
|
|
self.get_member(context, member_id)
|
|
for member_id in pool['members']]
|
|
vip['health_monitors'] = [
|
|
self.get_health_monitor(context, hm_id)
|
|
for hm_id in pool['health_monitors']]
|
|
return vip
|