vmware-nsx/vmware_nsx/services/lbaas/nsx_v3/implementation/healthmonitor_mgr.py

166 lines
7.2 KiB
Python

# Copyright 2017 VMware, Inc.
# All Rights Reserved
#
# 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.
from neutron_lib import exceptions as n_exc
from oslo_log import helpers as log_helpers
from oslo_log import log as logging
from oslo_utils import excutils
from vmware_nsx._i18n import _
from vmware_nsx.db import db as nsx_db
from vmware_nsx.services.lbaas import base_mgr
from vmware_nsx.services.lbaas import lb_const
from vmware_nsx.services.lbaas.nsx_v3.implementation import lb_utils
from vmware_nsxlib.v3 import exceptions as nsxlib_exc
from vmware_nsxlib.v3 import utils
LOG = logging.getLogger(__name__)
class EdgeHealthMonitorManagerFromDict(base_mgr.Nsxv3LoadbalancerBaseManager):
@log_helpers.log_method_call
def __init__(self):
super(EdgeHealthMonitorManagerFromDict, self).__init__()
@log_helpers.log_method_call
def _build_monitor_args(self, hm):
if hm['type'] in lb_const.NSXV3_MONITOR_MAP:
monitor_type = lb_const.NSXV3_MONITOR_MAP.get(hm['type'])
else:
msg = (_('Cannot create health monitor %(monitor)s with '
'type %(type)s') % {'monitor': hm['id'],
'type': hm['type']})
raise n_exc.InvalidInput(error_message=msg)
body = {'resource_type': monitor_type,
'interval': hm['delay'],
'fall_count': hm['max_retries'],
'timeout': hm['timeout']}
if monitor_type in [lb_const.LB_HEALTH_MONITOR_HTTP,
lb_const.LB_HEALTH_MONITOR_HTTPS]:
if hm['http_method']:
body['request_method'] = hm['http_method']
if hm['url_path']:
body['request_url'] = hm['url_path']
# TODO(tongl): nsxv3 backend doesn't support granular control
# of expected_codes. So we ignore it and use default for now.
# Once backend supports it, we can add it back.
# if hm['expected_codes']:
# body['response_status'] = hm['expected_codes']
return body
def create(self, context, hm, completor):
lb_id = hm['pool']['loadbalancer_id']
pool_id = hm['pool']['id']
pool_client = self.core_plugin.nsxlib.load_balancer.pool
monitor_client = self.core_plugin.nsxlib.load_balancer.monitor
monitor_name = utils.get_name_and_uuid(hm['name'] or 'monitor',
hm['id'])
tags = lb_utils.get_tags(self.core_plugin, hm['id'],
lb_const.LB_HM_TYPE,
hm['tenant_id'], context.project_name)
monitor_body = self._build_monitor_args(hm)
try:
lb_monitor = monitor_client.create(
display_name=monitor_name, tags=tags, **monitor_body)
except nsxlib_exc.ManagerError:
with excutils.save_and_reraise_exception():
completor(success=False)
binding = nsx_db.get_nsx_lbaas_pool_binding(
context.session, lb_id, pool_id)
if binding:
lb_pool_id = binding['lb_pool_id']
try:
pool_client.add_monitor_to_pool(lb_pool_id,
lb_monitor['id'])
except nsxlib_exc.ManagerError:
completor(success=False)
msg = _('Failed to attach monitor %(monitor)s to pool '
'%(pool)s') % {'monitor': lb_monitor['id'],
'pool': lb_pool_id}
raise n_exc.BadRequest(resource='lbaas-hm', msg=msg)
nsx_db.add_nsx_lbaas_monitor_binding(
context.session, lb_id, pool_id, hm['id'], lb_monitor['id'],
lb_pool_id)
else:
completor(success=False)
msg = _('Failed to attach monitor %(monitor)s to pool '
'%(pool)s: NSX pool was not found on the DB') % {
'monitor': hm['id'],
'pool': pool_id}
raise n_exc.BadRequest(resource='lbaas-hm', msg=msg)
completor(success=True)
def update(self, context, old_hm, new_hm, completor):
lb_id = new_hm['pool']['loadbalancer_id']
pool_id = new_hm['pool']['id']
monitor_client = self.core_plugin.nsxlib.load_balancer.monitor
binding = nsx_db.get_nsx_lbaas_monitor_binding(
context.session, lb_id, pool_id, new_hm['id'])
if binding:
lb_monitor_id = binding['lb_monitor_id']
monitor_body = self._build_monitor_args(new_hm)
monitor_name = utils.get_name_and_uuid(new_hm['name'] or 'monitor',
new_hm['id'])
monitor_client.update(lb_monitor_id, display_name=monitor_name,
**monitor_body)
else:
completor(success=False)
msg = _('Failed to update monitor %(monitor)s: NSX monitor was '
'not found in DB') % {'monitor': new_hm['id'],
'pool': pool_id}
raise n_exc.BadRequest(resource='lbaas-hm', msg=msg)
completor(success=True)
def delete(self, context, hm, completor):
lb_id = hm['pool']['loadbalancer_id']
pool_id = hm['pool']['id']
pool_client = self.core_plugin.nsxlib.load_balancer.pool
monitor_client = self.core_plugin.nsxlib.load_balancer.monitor
binding = nsx_db.get_nsx_lbaas_monitor_binding(
context.session, lb_id, pool_id, hm['id'])
if binding:
lb_monitor_id = binding['lb_monitor_id']
lb_pool_id = binding['lb_pool_id']
try:
pool_client.remove_monitor_from_pool(lb_pool_id,
lb_monitor_id)
except nsxlib_exc.ManagerError as exc:
LOG.error('Failed to remove monitor %(monitor)s from pool '
'%(pool)s with exception from nsx %(exc)s)',
{'monitor': lb_monitor_id,
'pool': lb_pool_id,
'exc': exc})
try:
monitor_client.delete(lb_monitor_id)
except nsxlib_exc.ManagerError as exc:
LOG.error('Failed to delete monitor %(monitor)s from '
'backend with exception %(exc)s',
{'monitor': lb_monitor_id,
'exc': exc})
nsx_db.delete_nsx_lbaas_monitor_binding(context.session, lb_id,
pool_id, hm['id'])
else:
# Do not fail a delete action
pass
completor(success=True)