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loadbalancer_member.py
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loadbalancer_member.py
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#
# Copyright (c) 2014 Juniper Networks, Inc. All rights reserved.
#
import uuid
try:
from neutron.extensions import loadbalancer
except ImportError:
from neutron_lbaas.extensions import loadbalancer
try:
from neutron.openstack.common import uuidutils
except ImportError:
from oslo_utils import uuidutils
try:
from neutron.common.config import cfg
except ImportError:
try:
from oslo.config import cfg
except ImportError:
from oslo_config import cfg
from neutron.common import exceptions as n_exc
from vnc_api.vnc_api import IdPermsType, NoIdError
from vnc_api.vnc_api import LoadbalancerMember, LoadbalancerMemberType
from resource_manager import ResourceManager
class LoadbalancerMemberManager(ResourceManager):
_loadbalancer_member_type_mapping = {
'admin_state': 'admin_state_up',
'status': 'status',
'protocol_port': 'protocol_port',
'weight': 'weight',
'address': 'address',
}
@property
def property_type_mapping(self):
return self._loadbalancer_member_type_mapping
def make_properties(self, member):
props = LoadbalancerMemberType()
for key, mapping in self._loadbalancer_member_type_mapping.iteritems():
if mapping in member:
setattr(props, key, member[mapping])
return props
def _get_member_pool_id(self, member):
pool_uuid = member.parent_uuid
return pool_uuid
def make_dict(self, member, fields=None):
res = {'id': member.uuid,
'pool_id': member.parent_uuid,
'status': self._get_object_status(member)}
try:
pool = self._api.loadbalancer_pool_read(id=member.parent_uuid)
res['tenant_id'] = pool.parent_uuid.replace('-', '')
except NoIdError:
pass
props = member.get_loadbalancer_member_properties()
for key, mapping in self._loadbalancer_member_type_mapping.iteritems():
value = getattr(props, key, None)
if value is not None:
res[mapping] = value
return self._fields(res, fields)
def resource_read(self, id):
return self._api.loadbalancer_member_read(id=id)
def resource_list(self, tenant_id=None):
""" In order to retrive all the members for a specific tenant
the code iterates through all the pools.
"""
if tenant_id is None:
return self._api.loadbalancer_members_list()
pool_list = self._api.loadbalancer_pools_list(tenant_id)
if 'loadbalancer-pools' not in pool_list:
return {}
member_list = []
for pool in pool_list['loadbalancer-pools']:
pool_members = self._api.loadbalancer_members_list(
parent_id=pool['uuid'])
if 'loadbalancer-members' in pool_members:
member_list.extend(pool_members['loadbalancer-members'])
response = {'loadbalancer-members': member_list}
return response
def get_collection(self, context, filters=None, fields=None):
""" Optimize the query for members in a pool.
"""
if 'pool_id' not in filters:
return super(LoadbalancerMemberManager, self).get_collection(
context, filters, fields)
member_list = []
for pool in filters['pool_id']:
pool_members = self._api.loadbalancer_members_list(
parent_id=pool)
if 'loadbalancer-members' in pool_members:
member_list.extend(pool_members['loadbalancer-members'])
response = []
for m in member_list:
res = self._get_resource_dict(m['uuid'], filters, fields)
if res is not None and self._is_authorized(context, res):
response.append(res)
return response
def resource_update(self, obj):
return self._api.loadbalancer_member_update(obj)
def resource_delete(self, id):
return self._api.loadbalancer_member_delete(id=id)
def get_exception_notfound(self, id=None):
return loadbalancer.MemberNotFound(member_id=id)
def get_exception_inuse(self, id=None):
pass
@property
def neutron_name(self):
return "member"
@property
def resource_name_plural(self):
return "loadbalancer-members"
def create(self, context, member):
"""
Create a loadbalancer_member object.
"""
m = member['member']
try:
pool = self._api.loadbalancer_pool_read(id=m['pool_id'])
except NoIdError:
raise loadbalancer.PoolNotFound(pool_id=m['pool_id'])
tenant_id = self._get_tenant_id_for_create(context, m)
if str(uuid.UUID(tenant_id)) != pool.parent_uuid:
raise n_exc.NotAuthorized()
obj_uuid = uuidutils.generate_uuid()
props = self.make_properties(m)
id_perms = IdPermsType(enable=True)
member_db = LoadbalancerMember(
obj_uuid, pool, loadbalancer_member_properties=props,
id_perms=id_perms)
member_db.uuid = obj_uuid
self._api.loadbalancer_member_create(member_db)
return self.make_dict(member_db)
def update_properties(self, member_db, id, m):
props = member_db.get_loadbalancer_member_properties()
if self.update_properties_subr(props, m):
member_db.set_loadbalancer_member_properties(props)
return True
return False
def update_object(self, member_db, id, m):
if 'pool_id' in m and self._get_member_pool_id(member_db) != m['pool_id']:
try:
pool = self._api.loadbalancer_pool_read(id=m['pool_id'])
except NoIdError:
raise loadbalancer.PoolNotFound(pool_id=m['pool_id'])
db_props = member_db.get_loadbalancer_member_properties()
members = pool.get_loadbalancer_members()
for member in members or []:
member_obj = self._api.loadbalancer_member_read(
id=member['uuid'])
props = member_obj.get_loadbalancer_member_properties()
if ((props.get_address() == db_props.get_address()) and
(props.get_protocol_port() == db_props.get_protocol_port())):
raise loadbalancer.MemberExists(
address=props.get_address(),
port=props.get_protocol_port(),
pool=m['pool_id'])
# delete member from old pool
props = member_db.get_loadbalancer_member_properties()
obj_uuid = member_db.uuid
self._api.loadbalancer_member_delete(id=member_db.uuid)
# create member for the new pool with same uuid and props
id_perms = IdPermsType(enable=True)
member_obj = LoadbalancerMember(
obj_uuid, pool, loadbalancer_member_properties=props,
id_perms=id_perms)
member_obj.uuid = obj_uuid
self._api.loadbalancer_member_create(member_obj)
return True
return False