def test_nexus_vm_migration(self):
"""Verify VM (live) migration.
Simulate the following:
Nova informs neutron of live-migration with port-update(new host).
This should trigger two update_port_pre/postcommit() calls.
The first one should only change the current host_id and remove the
binding resulting in the mechanism drivers receiving:
PortContext.original['binding:host_id']: previous value
PortContext.original_bound_segment: previous value
PortContext.current['binding:host_id']: current (new) value
PortContext.bound_segment: None
The second one binds the new host resulting in the mechanism
drivers receiving:
PortContext.original['binding:host_id']: previous value
PortContext.original_bound_segment: None
PortContext.current['binding:host_id']: previous value
PortContext.bound_segment: new value
"""
# Create network, subnet and port.
with self._create_resources() as result:
# Verify initial database entry.
# Use port_id to verify that 1st host name was used.
binding = nexus_db_v2.get_nexusvm_bindings(VLAN_START,
DEVICE_ID_1)[0]
intf_type, nexus_port = binding.port_id.split(':')
self.assertEqual(nexus_port, NEXUS_INTERFACE)
port = self.deserialize(self.fmt, result)
port_id = port['port']['id']
# Trigger update event to unbind segment.
# Results in port being deleted from nexus DB and switch.
data = {'port': {portbindings.HOST_ID: COMP_HOST_NAME_2}}
self.mock_bound_segment.return_value = None
self.mock_original_bound_segment.return_value = BOUND_SEGMENT1
self.new_update_request('ports', data,
port_id).get_response(self.api)
# Verify that port entry has been deleted.
self.assertRaises(c_exc.NexusPortBindingNotFound,
nexus_db_v2.get_nexusvm_bindings,
VLAN_START, DEVICE_ID_1)
# Trigger update event to bind segment with new host.
self.mock_bound_segment.return_value = BOUND_SEGMENT1
self.mock_original_bound_segment.return_value = None
self.new_update_request('ports', data,
port_id).get_response(self.api)
# Verify that port entry has been added using new host name.
# Use port_id to verify that 2nd host name was used.
binding = nexus_db_v2.get_nexusvm_bindings(VLAN_START,
DEVICE_ID_1)[0]
intf_type, nexus_port = binding.port_id.split(':')
self.assertEqual(nexus_port, NEXUS_INTERFACE_2)
def test_nexus_vm_migration(self):
"""Verify VM (live) migration.
Simulate the following:
Nova informs neutron of live-migration with port-update(new host).
This should trigger two update_port_pre/postcommit() calls.
The first one should only change the current host_id and remove the
binding resulting in the mechanism drivers receiving:
PortContext.original['binding:host_id']: previous value
PortContext.original_bound_segment: previous value
PortContext.current['binding:host_id']: current (new) value
PortContext.bound_segment: None
The second one binds the new host resulting in the mechanism
drivers receiving:
PortContext.original['binding:host_id']: previous value
PortContext.original_bound_segment: None
PortContext.current['binding:host_id']: previous value
PortContext.bound_segment: new value
"""
# Create network, subnet and port.
with self._create_resources() as result:
# Verify initial database entry.
# Use port_id to verify that 1st host name was used.
binding = nexus_db_v2.get_nexusvm_bindings(VLAN_START,
DEVICE_ID_1)[0]
intf_type, nexus_port = binding.port_id.split(':')
self.assertEqual(nexus_port, NEXUS_INTERFACE)
port = self.deserialize(self.fmt, result)
port_id = port['port']['id']
# Trigger update event to unbind segment.
# Results in port being deleted from nexus DB and switch.
data = {'port': {portbindings.HOST_ID: COMP_HOST_NAME_2}}
self.mock_bound_segment.return_value = None
self.mock_original_bound_segment.return_value = BOUND_SEGMENT1
self.new_update_request('ports', data,
port_id).get_response(self.api)
# Verify that port entry has been deleted.
self.assertRaises(c_exc.NexusPortBindingNotFound,
nexus_db_v2.get_nexusvm_bindings, VLAN_START,
DEVICE_ID_1)
# Trigger update event to bind segment with new host.
self.mock_bound_segment.return_value = BOUND_SEGMENT1
self.mock_original_bound_segment.return_value = None
self.new_update_request('ports', data,
port_id).get_response(self.api)
# Verify that port entry has been added using new host name.
# Use port_id to verify that 2nd host name was used.
binding = nexus_db_v2.get_nexusvm_bindings(VLAN_START,
DEVICE_ID_1)[0]
intf_type, nexus_port = binding.port_id.split(':')
self.assertEqual(nexus_port, NEXUS_INTERFACE_2)
def test_nexusvmbinding_get(self):
"""Test get of port bindings based on vlan and instance."""
npb11 = self._npb_test_obj(10, 100)
npb21 = self._npb_test_obj(20, 100)
npb22 = self._npb_test_obj(20, 200)
self._add_bindings_to_db([npb11, npb21, npb22])
npb = self._get_nexusvm_binding(npb21)
self._assert_bindings_match(npb, npb21)
npb = self._get_nexusvm_binding(npb22)
self._assert_bindings_match(npb, npb22)
with testtools.ExpectedException(exceptions.NexusPortBindingNotFound):
nexus_db_v2.get_nexusvm_bindings(npb21.vlan, "dummyInstance")[0]
def test_nexusvmbinding_get(self):
"""Test get of port bindings based on vlan and instance."""
npb11 = self._npb_test_obj(10, 100)
npb21 = self._npb_test_obj(20, 100)
npb22 = self._npb_test_obj(20, 200)
self._add_bindings_to_db([npb11, npb21, npb22])
npb = self._get_nexusvm_binding(npb21)
self._assert_bindings_match(npb, npb21)
npb = self._get_nexusvm_binding(npb22)
self._assert_bindings_match(npb, npb22)
with testtools.ExpectedException(exceptions.NexusPortBindingNotFound):
nexus_db_v2.get_nexusvm_bindings(npb21.vlan, "dummyInstance")[0]
def _delete_nxos_db(self, vlan_id, device_id, host_id):
"""Delete the nexus database entry.
Called during delete precommit port event.
"""
try:
rows = nxos_db.get_nexusvm_bindings(vlan_id, device_id)
for row in rows:
nxos_db.remove_nexusport_binding(
row.port_id, row.vlan_id, row.switch_ip, row.instance_id)
except excep.NexusPortBindingNotFound:
return
def _delete_nxos_db(self, vlan_id, device_id, host_id):
"""Delete the nexus database entry.
Called during delete precommit port event.
"""
try:
rows = nxos_db.get_nexusvm_bindings(vlan_id, device_id)
for row in rows:
nxos_db.remove_nexusport_binding(row.port_id, row.vlan_id,
row.switch_ip,
row.instance_id)
except excep.NexusPortBindingNotFound:
return
def _get_nexusvm_binding(self, npb):
"""Gets port binding based on vlan and instance."""
return nexus_db_v2.get_nexusvm_bindings(npb.vlan, npb.instance)[0]
def _get_nexusvm_binding(self, npb):
"""Gets port binding based on vlan and instance."""
return nexus_db_v2.get_nexusvm_bindings(npb.vlan, npb.instance)[0]
