def update_subnet(self, subnet_request):
"""Update subnet info in the IPAM driver.
Do the update only if the specific change is supported by the backend
"""
nsx_pool_id = nsx_db.get_nsx_ipam_pool_for_subnet(
self._context.session, subnet_request.subnet_id)
if not nsx_pool_id:
# Unsupported (or pre-upgrade) network
return self.default_ipam.update_subnet(
subnet_request)
# get the current pool data
curr_subnet = self._subnet_class.load(
subnet_request.subnet_id, nsx_pool_id,
self._context, tenant_id=subnet_request.tenant_id).get_details()
# check if the gateway changed
gateway_changed = False
if (str(subnet_request.gateway_ip) != str(curr_subnet.gateway_ip)):
if not self.support_update_gateway:
self._raise_update_not_supported()
gateway_changed = True
# check that the prefix / cidr / pools changed
pools_changed = False
if subnet_request.prefixlen != curr_subnet.prefixlen:
if not self.support_update_pools:
self._raise_update_not_supported()
pools_changed = True
if subnet_request.subnet_cidr[0] != curr_subnet.subnet_cidr[0]:
if not self.support_update_pools:
self._raise_update_not_supported()
pools_changed = True
if (len(subnet_request.allocation_pools) !=
len(curr_subnet.allocation_pools)):
if not self.support_update_pools:
self._raise_update_not_supported()
pools_changed = True
if (len(subnet_request.allocation_pools) !=
len(curr_subnet.allocation_pools)):
if not self.support_update_pools:
self._raise_update_not_supported()
pools_changed = True
else:
for pool_ind in range(len(subnet_request.allocation_pools)):
pool_req = subnet_request.allocation_pools[pool_ind]
curr_pool = curr_subnet.allocation_pools[pool_ind]
if (pool_req.first != curr_pool.first or
pool_req.last != curr_pool.last):
if not self.support_update_pools:
self._raise_update_not_supported()
pools_changed = True
# update the relevant attributes at the backend pool
if gateway_changed or pools_changed:
self.update_backend_pool(nsx_pool_id, subnet_request)
def get_subnet(self, subnet_id):
"""Retrieve an IPAM subnet."""
nsx_pool_id = nsx_db.get_nsx_ipam_pool_for_subnet(
self._context.session, subnet_id)
if not nsx_pool_id:
# Unsupported (or pre-upgrade) network
return self.default_ipam.get_subnet(subnet_id)
return self._subnet_class.load(subnet_id, nsx_pool_id, self._context)
def get_subnet(self, subnet_id):
"""Retrieve an IPAM subnet."""
nsx_pool_id = nsx_db.get_nsx_ipam_pool_for_subnet(
self._context.session, subnet_id)
if not nsx_pool_id:
# Unsupported (or pre-upgrade) network
return self.default_ipam.get_subnet(subnet_id)
return self._subnet_class.load(subnet_id, nsx_pool_id, self._context)
def remove_subnet(self, subnet_id):
"""Delete an IPAM subnet pool from backend & DB."""
nsx_pool_id = nsx_db.get_nsx_ipam_pool_for_subnet(
self._context.session, subnet_id)
if not nsx_pool_id:
# Unsupported (or pre-upgrade) network
self.default_ipam.remove_subnet(subnet_id)
return
# Delete from backend
self.delete_backend_pool(nsx_pool_id)
# delete pool from DB
nsx_db.del_nsx_ipam_subnet_pool(self._context.session, subnet_id,
nsx_pool_id)
def remove_subnet(self, subnet_id):
"""Delete an IPAM subnet pool from backend & DB."""
nsx_pool_id = nsx_db.get_nsx_ipam_pool_for_subnet(
self._context.session, subnet_id)
if not nsx_pool_id:
# Unsupported (or pre-upgrade) network
self.default_ipam.remove_subnet(subnet_id)
return
# Delete from backend
self.delete_backend_pool(nsx_pool_id)
# delete pool from DB
nsx_db.del_nsx_ipam_subnet_pool(self._context.session,
subnet_id, nsx_pool_id)
