def delete_port_precommit(self, context):
"""Delete port pre-database commit event.
Delete port bindings from the database and scan whether the network
is still required on the interfaces trunked.
"""
if not self._is_deviceowner_compute(context.current):
return
port = context.current
device_id = port['device_id']
vlan_id = self._get_vlanid(context)
if not vlan_id or not device_id:
return
# Delete DB row for this port
try:
row = nxos_db.get_nexusvm_binding(vlan_id, device_id)
except excep.NexusPortBindingNotFound:
return
switch_ip = row.switch_ip
nexus_port = None
if row.port_id != 'router':
nexus_port = row.port_id
nxos_db.remove_nexusport_binding(row.port_id, row.vlan_id,
row.switch_ip, row.instance_id)
# Check for any other bindings with the same vlan_id and switch_ip
try:
nxos_db.get_nexusvlan_binding(row.vlan_id, row.switch_ip)
except excep.NexusPortBindingNotFound:
try:
# Delete this vlan from this switch
if nexus_port:
self.driver.disable_vlan_on_trunk_int(switch_ip,
row.vlan_id,
nexus_port)
self.driver.delete_vlan(switch_ip, row.vlan_id)
except Exception:
# The delete vlan operation on the Nexus failed,
# so this delete_port request has failed. For
# consistency, roll back the Nexus database to what
# it was before this request.
with excutils.save_and_reraise_exception():
nxos_db.add_nexusport_binding(row.port_id,
row.vlan_id,
row.switch_ip,
row.instance_id)
def delete_port_precommit(self, context):
"""Delete port pre-database commit event.
Delete port bindings from the database and scan whether the network
is still required on the interfaces trunked.
"""
if not self._is_deviceowner_compute(context.current):
return
port = context.current
device_id = port['device_id']
vlan_id = self._get_vlanid(context)
if not vlan_id or not device_id:
return
# Delete DB row for this port
try:
row = nxos_db.get_nexusvm_binding(vlan_id, device_id)
except excep.NexusPortBindingNotFound:
return
switch_ip = row.switch_ip
nexus_port = None
if row.port_id != 'router':
nexus_port = row.port_id
nxos_db.remove_nexusport_binding(row.port_id, row.vlan_id,
row.switch_ip, row.instance_id)
# Check for any other bindings with the same vlan_id and switch_ip
try:
nxos_db.get_nexusvlan_binding(row.vlan_id, row.switch_ip)
except excep.NexusPortBindingNotFound:
try:
# Delete this vlan from this switch
if nexus_port:
self.driver.disable_vlan_on_trunk_int(
switch_ip, row.vlan_id, nexus_port)
self.driver.delete_vlan(switch_ip, row.vlan_id)
except Exception:
# The delete vlan operation on the Nexus failed,
# so this delete_port request has failed. For
# consistency, roll back the Nexus database to what
# it was before this request.
with excutils.save_and_reraise_exception():
nxos_db.add_nexusport_binding(row.port_id, row.vlan_id,
row.switch_ip,
row.instance_id)
def _remove_binding_from_db(self, npb):
"""Removes a port binding from the Nexus database."""
return nexus_db_v2.remove_nexusport_binding(
npb.port, npb.vlan, npb.switch, npb.instance)