335 lines
15 KiB
Python
335 lines
15 KiB
Python
# Copyright 2018 VMware, Inc.
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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 exceptions as n_exc
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from oslo_log import log as logging
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from oslo_utils import excutils
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from vmware_nsx._i18n import _
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from vmware_nsx.services.lbaas import base_mgr
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from vmware_nsx.services.lbaas import lb_const
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from vmware_nsx.services.lbaas.nsx_p.implementation import lb_utils as p_utils
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from vmware_nsx.services.lbaas.nsx_v3.implementation import lb_utils
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from vmware_nsx.services.lbaas.octavia import constants as oct_const
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from vmware_nsxlib.v3 import exceptions as nsxlib_exc
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from vmware_nsxlib.v3.policy import utils as lib_p_utils
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LOG = logging.getLogger(__name__)
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class EdgeLoadBalancerManagerFromDict(base_mgr.NsxpLoadbalancerBaseManager):
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def _validate_lb_network(self, context, lb):
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router_id = lb_utils.get_router_from_network(
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context, self.core_plugin, lb['vip_subnet_id'])
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return router_id
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def _get_info_from_fip(self, context, fip):
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filters = {'floating_ip_address': [fip]}
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floating_ips = self.core_plugin.get_floatingips(context,
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filters=filters)
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if floating_ips:
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return (floating_ips[0]['fixed_ip_address'],
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floating_ips[0]['router_id'])
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else:
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msg = (_('Member IP %(fip)s is an external IP, and is expected to '
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'be a floating IP') % {'fip': fip})
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raise n_exc.BadRequest(resource='lbaas-vip', msg=msg)
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def create(self, context, lb, completor):
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lb_id = lb['id']
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network = lb_utils.get_network_from_subnet(
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context, self.core_plugin, lb['vip_subnet_id'])
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router_id = self._validate_lb_network(context, lb)
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if not router_id and network and not network.get('router:external'):
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completor(success=False)
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msg = (_('Cannot create a loadbalancer %(lb_id)s on subnet. '
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'%(subnet)s is neither public nor connected to the LB '
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'router') %
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{'lb_id': lb_id, 'subnet': lb['vip_subnet_id']})
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raise n_exc.BadRequest(resource='lbaas-subnet', msg=msg)
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service_client = self.core_plugin.nsxpolicy.load_balancer.lb_service
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lb_service = None
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if router_id:
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# Check if a service was already created for this router
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lb_service = p_utils.get_router_nsx_lb_service(
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self.core_plugin.nsxpolicy, router_id)
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if lb_service:
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# Add the new LB to the service by adding the tag.
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# At the same time verify maximum number of tags
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try:
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with p_utils.get_lb_rtr_lock(router_id):
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service_client.update_customized(
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lb_service['id'],
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p_utils.add_service_tag_callback(lb['id']))
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except n_exc.BadRequest:
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# This will fail if there are too many loadbalancers
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completor(success=False)
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msg = (_('Cannot create a loadbalancer %(lb_id)s on '
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'router %(router)s, as it already has too many '
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'loadbalancers') %
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{'lb_id': lb_id, 'router': router_id})
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raise n_exc.BadRequest(resource='lbaas-router', msg=msg)
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except Exception as e:
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with excutils.save_and_reraise_exception():
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completor(success=False)
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LOG.error('Failed to create loadbalancer %(lb)s for '
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'lb with exception %(e)s',
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{'lb': lb['id'], 'e': e})
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else:
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# Create the Tier1 service router if it does not exist
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if not self.core_plugin.service_router_has_services(
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context.elevated(), router_id):
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self.core_plugin.create_service_router(context, router_id)
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if not lb_service:
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lb_name = p_utils.get_service_lb_name(lb, router_id)
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tags = p_utils.get_tags(self.core_plugin,
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router_id if router_id else '',
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lb_const.LR_ROUTER_TYPE,
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lb['tenant_id'], context.project_name)
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tags.append(p_utils.get_service_lb_tag(lb['id']))
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lb_size = lb_utils.get_lb_flavor_size(self.flavor_plugin, context,
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lb.get('flavor_id'))
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try:
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if network and network.get('router:external'):
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connectivity_path = None
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else:
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tier1_srv = self.core_plugin.nsxpolicy.tier1
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connectivity_path = tier1_srv.get_path(router_id)
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if connectivity_path:
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with p_utils.get_lb_rtr_lock(router_id):
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service_client.create_or_overwrite(
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lb_name, lb_service_id=lb['id'],
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description=lb['description'],
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tags=tags, size=lb_size,
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connectivity_path=connectivity_path)
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else:
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# no lock
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service_client.create_or_overwrite(
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lb_name, lb_service_id=lb['id'],
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description=lb['description'],
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tags=tags, size=lb_size,
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connectivity_path=connectivity_path)
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# Add rule to advertise external vips
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if router_id:
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p_utils.update_router_lb_vip_advertisement(
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context, self.core_plugin, router_id)
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except Exception as e:
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with excutils.save_and_reraise_exception():
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completor(success=False)
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LOG.error('Failed to create loadbalancer %(lb)s for lb '
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'with exception %(e)s', {'lb': lb['id'], 'e': e})
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# Make sure the vip port is marked with a device owner
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port = self.core_plugin.get_port(
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context.elevated(), lb['vip_port_id'])
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if not port.get('device_owner'):
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self.core_plugin.update_port(
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context.elevated(), lb['vip_port_id'],
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{'port': {'device_id': oct_const.DEVICE_ID_PREFIX + lb['id'],
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'device_owner': lb_const.VMWARE_LB_VIP_OWNER}})
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completor(success=True)
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def update(self, context, old_lb, new_lb, completor):
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completor(success=True)
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def delete(self, context, lb, completor):
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router_id = None
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try:
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router_id = lb_utils.get_router_from_network(
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context, self.core_plugin, lb['vip_subnet_id'])
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except n_exc.SubnetNotFound:
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LOG.warning("VIP subnet %s not found while deleting "
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"loadbalancer %s", lb['vip_subnet_id'], lb['id'])
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service_client = self.core_plugin.nsxpolicy.load_balancer.lb_service
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service = p_utils.get_lb_nsx_lb_service(
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self.core_plugin.nsxpolicy, lb['id'])
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if service:
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lb_service_id = service['id']
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if not router_id:
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router_id = lib_p_utils.path_to_id(
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service.get('connectivity_path', ''))
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if router_id:
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with p_utils.get_lb_rtr_lock(router_id):
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# check if this is the last lb for this router and update
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# tags / delete service
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try:
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service_client.update_customized(
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lb_service_id,
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p_utils.remove_service_tag_callback(lb['id']))
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except n_exc.BadRequest:
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# This is the last Lb and service should be deleted
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try:
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service_client.delete(lb_service_id)
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except Exception as e:
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with excutils.save_and_reraise_exception():
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completor(success=False)
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LOG.error('Failed to delete loadbalancer '
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'%(lb)s for lb with error %(err)s',
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{'lb': lb['id'], 'err': e})
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# Remove the service router if no more services
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if not self.core_plugin.service_router_has_services(
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context.elevated(), router_id):
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try:
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self.core_plugin.delete_service_router(
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router_id)
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except Exception as e:
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with excutils.save_and_reraise_exception():
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completor(success=False)
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LOG.error('Failed to delete service '
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'router upon deletion '
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'of loadbalancer %(lb)s with '
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'error %(err)s',
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{'lb': lb['id'], 'err': e})
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else:
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# LB without router (meaning external vip and no members)
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try:
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service_client.delete(lb_service_id)
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except Exception as e:
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with excutils.save_and_reraise_exception():
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completor(success=False)
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LOG.error('Failed to delete loadbalancer %(lb)s for '
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'lb with error %(err)s',
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{'lb': lb['id'], 'err': e})
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# Make sure the vip port is not marked with a vmware device owner
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try:
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port = self.core_plugin.get_port(
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context.elevated(), lb['vip_port_id'])
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if port.get('device_owner') == lb_const.VMWARE_LB_VIP_OWNER:
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self.core_plugin.update_port(
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context.elevated(), lb['vip_port_id'],
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{'port': {'device_id': '',
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'device_owner': ''}})
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except n_exc.PortNotFound:
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# Only log the error and continue anyway
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LOG.warning("VIP port %s not found while deleting loadbalancer %s",
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lb['vip_port_id'], lb['id'])
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except Exception as e:
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# Just log the error as all other resources were deleted
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LOG.error("Failed to update neutron port %s devices upon "
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"loadbalancer deletion: %s", lb['vip_port_id'], e)
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completor(success=True)
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def delete_cascade(self, context, lb, completor):
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"""Delete all backend and DB resources of this loadbalancer"""
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self.delete(context, lb, completor)
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def refresh(self, context, lb):
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# TODO(kobis): implement
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pass
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def _get_lb_virtual_servers(self, context, lb):
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# Get all virtual servers that belong to this loadbalancer
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vs_list = [vs['id'] for vs in lb['listeners']]
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return vs_list
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def stats(self, context, lb):
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# Since multiple LBaaS loadbalancer can share the same LB service,
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# get the corresponding virtual servers' stats instead of LB service.
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stats = {'active_connections': 0,
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'bytes_in': 0,
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'bytes_out': 0,
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'total_connections': 0}
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service_client = self.core_plugin.nsxpolicy.load_balancer.lb_service
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vs_list = self._get_lb_virtual_servers(context, lb)
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try:
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rsp = service_client.get_statistics(lb['id'])
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for result in rsp.get('results', []):
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for vs in result.get('virtual_servers', []):
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# Skip the virtual server that doesn't belong
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# to this loadbalancer
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vs_id = lib_p_utils.path_to_id(vs['virtual_server_path'])
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if vs_id not in vs_list:
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continue
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vs_stats = vs.get('statistics', {})
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for stat in lb_const.LB_STATS_MAP:
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lb_stat = lb_const.LB_STATS_MAP[stat]
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stats[stat] += vs_stats.get(lb_stat, 0)
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except nsxlib_exc.ManagerError:
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msg = _('Failed to retrieve stats from LB service '
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'for loadbalancer %(lb)s') % {'lb': lb['id']}
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raise n_exc.BadRequest(resource='lbaas-lb', msg=msg)
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return stats
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def get_operating_status(self, context, id, with_members=False):
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service_client = self.core_plugin.nsxpolicy.load_balancer.lb_service
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try:
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service_status = service_client.get_status(id)
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if not isinstance(service_status, dict):
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service_status = {}
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except nsxlib_exc.ManagerError:
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LOG.warning("LB service %(lbs)s is not found",
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{'lbs': id})
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return {}
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# get the loadbalancer status from the LB service
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lb_status = lb_const.ONLINE
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lb_status_results = service_status.get('results')
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if lb_status_results:
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result = lb_status_results[0]
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if result.get('service_status'):
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# Use backend service_status
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lb_status = self._nsx_status_to_lb_status(
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result['service_status'])
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elif result.get('alarm'):
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# No status, but has alarms -> ERROR
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lb_status = lb_const.OFFLINE
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else:
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# Unknown - assume it is ok
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lb_status = lb_const.ONLINE
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statuses = {lb_const.LOADBALANCERS: [{'id': id, 'status': lb_status}],
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lb_const.LISTENERS: [],
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lb_const.POOLS: [],
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lb_const.MEMBERS: []}
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# TODO(asarfaty): Go over all VS of this loadbalancer by tags
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# to add the listeners statuses from the virtual servers statuses
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return statuses
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def _nsx_status_to_lb_status(self, nsx_status):
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if not nsx_status:
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# default fallback
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return lb_const.ONLINE
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# Statuses that are considered ONLINE:
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if nsx_status.upper() in ['UP', 'UNKNOWN', 'PARTIALLY_UP',
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'NO_STANDBY']:
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return lb_const.ONLINE
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# Statuses that are considered OFFLINE:
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if nsx_status.upper() in ['PRIMARY_DOWN', 'DETACHED', 'DOWN', 'ERROR']:
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return lb_const.OFFLINE
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if nsx_status.upper() == 'DISABLED':
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return lb_const.DISABLED
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# default fallback
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LOG.debug("NSX LB status %s - interpreted as ONLINE", nsx_status)
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return lb_const.ONLINE
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