openstack
/
nova-powervm
Code Issues Proposed changes

Merge "Emit instance life cycle events"

Browse Source
changes/71/275971/9
Jenkins 7 years ago committed by Gerrit Code Review
parent 5848833533 97b3661463
commit ebbb9ec623
6 changed files with 327 additions and 15 deletions
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2
nova_powervm/tests/virt/powervm/__init__.py
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@ -13,6 +13,7 @@
# License for the specific language governing permissions and limitations
# under the License.
from nova.compute import power_state
from nova.compute import task_states
from nova.objects import flavor
from nova.objects import image_meta
@ -43,6 +44,7 @@ TEST_INSTANCE = {
'host': 'host1',
'flavor': TEST_FLAVOR,
'task_state': None,
'power_state': power_state.SHUTDOWN,
}
TEST_INST_SPAWNING = dict(TEST_INSTANCE, task_state=task_states.SPAWNING)

1
nova_powervm/tests/virt/powervm/fixtures.py
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@ -91,6 +91,7 @@ class PowerVMComputeDriver(fixtures.Fixture):
# Pretend it just returned one host
ms_http.feed.entries = [ms_http.feed.entries[0]]
self.drv.adapter.read.return_value = ms_http
self.drv.session = self.drv.adapter.session
self.drv.init_host('FakeHost')
def setUp(self):

57
nova_powervm/tests/virt/powervm/test_driver.py
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@ -45,6 +45,7 @@ from nova_powervm.tests.virt.powervm import fixtures as fx
from nova_powervm.virt.powervm import driver
from nova_powervm.virt.powervm import exception as p_exc
from nova_powervm.virt.powervm import live_migration as lpm
from nova_powervm.virt.powervm import vm
MS_HTTPRESP_FILE = "managedsystem.txt"
MS_NAME = 'HV4'
@ -132,6 +133,11 @@ class TestPowerVMDriver(test.TestCase):
test_drv = driver.PowerVMDriver(fake.FakeVirtAPI())
self.assertIsNotNone(test_drv)
def test_cleanup_host(self):
self.drv.cleanup_host('fake_host')
self.assertTrue(
self.drv.session.get_event_listener.return_value.shutdown.called)
def test_get_volume_connector(self):
"""Tests that a volume connector can be built."""
vol_connector = self.drv.get_volume_connector(mock.Mock())
@ -1570,3 +1576,54 @@ class TestPowerVMDriver(test.TestCase):
mock_bk_dev.return_value = 'info'
self.assertEqual('info',
self.drv._get_block_device_info('ctx', self.inst))
class TestNovaEventHandler(test.TestCase):
def setUp(self):
super(TestNovaEventHandler, self).setUp()
self.mock_driver = mock.Mock()
self.handler = driver.NovaEventHandler(self.mock_driver)
@mock.patch.object(vm, 'get_instance')
@mock.patch.object(vm, 'get_vm_qp')
def test_events(self, mock_qprops, mock_get_inst):
# Test events
event_data = [
{
'EventType': 'NEW_CLIENT',
'EventData': '',
'EventID': '1452692619554',
'EventDetail': '',
},
{
'EventType': 'MODIFY_URI',
'EventData': 'http://localhost:12080/rest/api/uom/Managed'
'System/c889bf0d-9996-33ac-84c5-d16727083a77',
'EventID': '1452692619555',
'EventDetail': 'Other',
},
{
'EventType': 'MODIFY_URI',
'EventData': 'http://localhost:12080/rest/api/uom/Managed'
'System/c889bf0d-9996-33ac-84c5-d16727083a77/'
'LogicalPartition/794654F5-B6E9-4A51-BEC2-'
'A73E41EAA938',
'EventID': '1452692619563',
'EventDetail': 'ReferenceCode,Other',
},
{
'EventType': 'MODIFY_URI',
'EventData': 'http://localhost:12080/rest/api/uom/Managed'
'System/c889bf0d-9996-33ac-84c5-d16727083a77/'
'LogicalPartition/794654F5-B6E9-4A51-BEC2-'
'A73E41EAA938',
'EventID': '1452692619566',
'EventDetail': 'RMCState,PartitionState,Other',
},
]
mock_qprops.return_value = pvm_bp.LPARState.RUNNING
mock_get_inst.return_value = powervm.TEST_INST1
self.handler.process(event_data)
self.assertTrue(self.mock_driver.emit_event.called)

30
nova_powervm/tests/virt/powervm/test_vm.py
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@ -16,13 +16,13 @@
#
import logging
import mock
from nova.compute import power_state
from nova import exception
from nova import objects
from nova import test
from nova.virt import event
from pypowervm import exceptions as pvm_exc
from pypowervm.helpers import log_helper as pvm_log
from pypowervm.tests import test_fixtures as pvm_fx
@ -195,6 +195,34 @@ class TestVM(test.TestCase):
self.resp = lpar_http.response
def test_translate_event(self):
# (expected event, pvm state, power_state)
tests = [
(event.EVENT_LIFECYCLE_STARTED, "running", power_state.SHUTDOWN),
(None, "running", power_state.RUNNING)
]
for t in tests:
self.assertEqual(t[0], vm.translate_event(t[1], t[2]))
@mock.patch.object(objects.Instance, 'get_by_uuid')
def test_get_instance(self, mock_get_uuid):
mock_get_uuid.return_value = '1111'
self.assertEqual('1111', vm.get_instance('ctx', 'ABC'))
mock_get_uuid.side_effect = [
exception.InstanceNotFound({'instance_id': 'fake_instance'}),
'222'
]
self.assertEqual('222', vm.get_instance('ctx', 'ABC'))
def test_uuid_set_high_bit(self):
self.assertEqual(
vm._uuid_set_high_bit('65e7a5f0-ceb2-427d-a6d1-e47f0eb38708'),
'e5e7a5f0-ceb2-427d-a6d1-e47f0eb38708')
self.assertEqual(
vm._uuid_set_high_bit('f6f79d3f-eef1-4009-bfd4-172ab7e6fff4'),
'f6f79d3f-eef1-4009-bfd4-172ab7e6fff4')
def test_instance_info(self):
# Test at least one state translation

138
nova_powervm/virt/powervm/driver.py
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@ -26,6 +26,7 @@ from nova.objects import flavor as flavor_obj
from nova import utils as n_utils
from nova.virt import configdrive
from nova.virt import driver
from nova.virt import event
import re
from oslo_log import log as logging
@ -41,6 +42,7 @@ from pypowervm.helpers import vios_busy as vio_hlp
from pypowervm.tasks import memory as pvm_mem
from pypowervm.tasks import power as pvm_pwr
from pypowervm.tasks import vterm as pvm_vterm
from pypowervm import util as pvm_util
from pypowervm.wrappers import base_partition as pvm_bp
from pypowervm.wrappers import managed_system as pvm_ms
from pypowervm.wrappers import virtual_io_server as pvm_vios
@ -118,11 +120,26 @@ class PowerVMDriver(driver.ComputeDriver):
LOG.info(_LI("The compute driver has been initialized."))
def cleanup_host(self, host):
"""Clean up anything that is necessary for the driver gracefully stop,
including ending remote sessions. This is optional.
"""
# Stop listening for events
try:
self.session.get_event_listener().shutdown()
except Exception:
pass
LOG.info(_LI("The compute driver has been shutdown."))
def _get_adapter(self):
self.session = pvm_apt.Session()
self.adapter = pvm_apt.Adapter(
self.session, helpers=[log_hlp.log_helper,
vio_hlp.vios_busy_retry_helper])
# Register the event handler
eh = NovaEventHandler(self)
self.session.get_event_listener().subscribe(eh)
def _get_disk_adapter(self):
conn_info = {'adapter': self.adapter, 'host_uuid': self.host_uuid,
@ -1687,3 +1704,124 @@ class PowerVMDriver(driver.ComputeDriver):
return boot_conn_type
else:
return boot_conn_type
class NovaEventHandler(pvm_apt.RawEventHandler):
"""Used to receive and handle events from PowerVM."""
inst_actions_handled = {'PartitionState'}
def __init__(self, driver):
self._driver = driver
def _handle_event(self, uri, etype, details, eid):
"""Handle an individual event.
:param uri: PowerVM event uri
:param etype: PowerVM event type
:param details: PowerVM event details
:param eid: PowerVM event id
"""
# See if this uri ends with a PowerVM UUID.
if not pvm_util.is_instance_path(uri):
return
pvm_uuid = pvm_util.get_req_path_uuid(
uri, preserve_case=True)
# If a vm event and one we handle, call the inst handler.
if (uri.endswith('LogicalPartition/' + pvm_uuid) and
(self.inst_actions_handled & set(details))):
inst = vm.get_instance(ctx.get_admin_context(),
pvm_uuid)
if inst:
LOG.debug('Handle action "%(action)s" event for instance: '
'%(inst)s' %
dict(action=details, inst=inst.name))
self._handle_inst_event(
inst, pvm_uuid, uri, etype, details, eid)
def _handle_inst_event(self, inst, pvm_uuid, uri, etype, details, eid):
"""Handle an instance event.
This method will check if an instance event signals a change in the
state of the instance as known to OpenStack and if so, trigger an
event upward.
:param inst: the instance object.
:param pvm_uuid: the PowerVM uuid of the vm
:param uri: PowerVM event uri
:param etype: PowerVM event type
:param details: PowerVM event details
:param eid: PowerVM event id
"""
# If the state of the vm changed see if it should be handled
if 'PartitionState' in details:
# Get the current state
pvm_state = vm.get_vm_qp(self._driver.adapter, pvm_uuid,
'PartitionState')
# See if it's really a change of state from what OpenStack knows
transition = vm.translate_event(pvm_state, inst.power_state)
if transition is not None:
LOG.debug('New state for instance: %s', pvm_state,
instance=inst)
# Now create an event and sent it.
lce = event.LifecycleEvent(inst.uuid, transition)
LOG.info(_LI('Sending life cycle event for instance state '
'change to: %s'), pvm_state, instance=inst)
self._driver.emit_event(lce)
def process(self, events):
"""Process the event that comes back from PowerVM.
Example of event data:
<EventType kb="ROR" kxe="false">NEW_CLIENT</EventType>
<EventID kxe="false" kb="ROR">1452692619554</EventID>
<EventData kxe="false" kb="ROR"/>
<EventDetail kb="ROR" kxe="false"/>
<EventType kb="ROR" kxe="false">MODIFY_URI</EventType>
<EventID kxe="false" kb="ROR">1452692619557</EventID>
<EventData kxe="false" kb="ROR">http://localhost:12080/rest/api/
uom/ManagedSystem/c889bf0d-9996-33ac-84c5-d16727083a77
</EventData>
<EventDetail kb="ROR" kxe="false">Other</EventDetail>
<EventType kb="ROR" kxe="false">MODIFY_URI</EventType>
<EventID kxe="false" kb="ROR">1452692619566</EventID>
<EventData kxe="false" kb="ROR">http://localhost:12080/rest/api/
uom/ManagedSystem/c889bf0d-9996-33ac-84c5-d16727083a77/
LogicalPartition/794654F5-B6E9-4A51-BEC2-A73E41EAA938
</EventData>
<EventDetail kb="ROR" kxe="false">RMCState,PartitionState,Other
</EventDetail>
:param events: A sequence of event dicts that has come back from the
system.
Format:
[
{
'EventType': <type>,
'EventID': <id>,
'EventData': <data>,
'EventDetail': <detail>
},
]
"""
for pvm_event in events:
try:
# Pull all the pieces of the event.
uri = pvm_event['EventData']
etype = pvm_event['EventType']
details = pvm_event['EventDetail']
details = details.split(',') if details else []
eid = pvm_event['EventID']
if etype not in ['NEW_CLIENT']:
LOG.debug('PowerVM Event-Action: %s URI: %s Details %s' %
(etype, uri, details))
self._handle_event(uri, etype, details, eid)
except Exception as e:
LOG.exception(e)
LOG.warning(_LW('Unable to parse event URI: %s from PowerVM.'),
uri)

114
nova_powervm/virt/powervm/vm.py
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@ -21,6 +21,8 @@ import six
from nova.compute import power_state
from nova import exception
from nova import objects
from nova.virt import event
from nova.virt import hardware
from pypowervm import exceptions as pvm_exc
from pypowervm.helpers import log_helper as pvm_log
@ -47,27 +49,47 @@ LOG = logging.getLogger(__name__)
CONF = cfg.CONF
POWERVM_TO_NOVA_STATE = {
"migrating running": power_state.RUNNING,
"running": power_state.RUNNING,
"starting": power_state.RUNNING,
pvm_bp.LPARState.MIGRATING_RUNNING: power_state.RUNNING,
pvm_bp.LPARState.RUNNING: power_state.RUNNING,
pvm_bp.LPARState.STARTING: power_state.RUNNING,
"migrating not active": power_state.SHUTDOWN,
"not activated": power_state.SHUTDOWN,
pvm_bp.LPARState.MIGRATING_NOT_ACTIVE: power_state.SHUTDOWN,
pvm_bp.LPARState.NOT_ACTIVATED: power_state.SHUTDOWN,
"hardware discovery": power_state.NOSTATE,
"not available": power_state.NOSTATE,
pvm_bp.LPARState.HARDWARE_DISCOVERY: power_state.NOSTATE,
pvm_bp.LPARState.NOT_AVAILBLE: power_state.NOSTATE,
# map open firmware state to active since it can be shut down
"open firmware": power_state.RUNNING,
"resuming": power_state.NOSTATE,
"shutting down": power_state.NOSTATE,
"suspending": power_state.NOSTATE,
"unknown": power_state.NOSTATE,
pvm_bp.LPARState.OPEN_FIRMWARE: power_state.RUNNING,
pvm_bp.LPARState.RESUMING: power_state.NOSTATE,
pvm_bp.LPARState.SHUTTING_DOWN: power_state.NOSTATE,
pvm_bp.LPARState.SUSPENDING: power_state.NOSTATE,
pvm_bp.LPARState.UNKNOWN: power_state.NOSTATE,
"suspended": power_state.SUSPENDED,
pvm_bp.LPARState.SUSPENDED: power_state.SUSPENDED,
"error": power_state.CRASHED
pvm_bp.LPARState.ERROR: power_state.CRASHED
}
# Groupings of PowerVM events used when considering if a state transition
# has taken place.
RUNNING_EVENTS = [
pvm_bp.LPARState.MIGRATING_RUNNING,
pvm_bp.LPARState.RUNNING,
pvm_bp.LPARState.STARTING,
pvm_bp.LPARState.OPEN_FIRMWARE,
]
STOPPED_EVENTS = [
pvm_bp.LPARState.NOT_ACTIVATED,
pvm_bp.LPARState.ERROR,
pvm_bp.LPARState.UNKNOWN,
]
SUSPENDED_EVENTS = [
pvm_bp.LPARState.SUSPENDING,
]
RESUMING_EVENTS = [
pvm_bp.LPARState.RESUMING,
]
POWERVM_STARTABLE_STATE = (pvm_bp.LPARState.NOT_ACTIVATED)
POWERVM_STOPABLE_STATE = (pvm_bp.LPARState.RUNNING, pvm_bp.LPARState.STARTING,
pvm_bp.LPARState.OPEN_FIRMWARE,
@ -79,6 +101,31 @@ SECURE_RMC_VSWITCH = 'MGMTSWITCH'
SECURE_RMC_VLAN = 4094
def translate_event(pvm_state, pwr_state):
"""Translate the PowerVM state and see if it has changed.
Compare the state from PowerVM to the state from OpenStack and see if
a life cycle event should be sent to up to OpenStack.
:param pvm_state: VM state from PowerVM
:param pwr_state: Instance power state from OpenStack
:returns: life cycle event to send.
"""
trans = None
if pvm_state in RUNNING_EVENTS and pwr_state != power_state.RUNNING:
trans = event.EVENT_LIFECYCLE_STARTED
elif pvm_state in STOPPED_EVENTS and pwr_state != power_state.SHUTDOWN:
trans = event.EVENT_LIFECYCLE_STOPPED
elif (pvm_state in SUSPENDED_EVENTS and
pwr_state != power_state.SUSPENDED):
trans = event.EVENT_LIFECYCLE_SUSPENDED
elif pvm_state in RESUMING_EVENTS and pwr_state != power_state.RUNNING:
trans = event.EVENT_LIFECYCLE_RESUMED
LOG.debug('Transistion to %s' % trans)
return trans
def _translate_vm_state(pvm_state):
"""Find the current state of the lpar and convert it to
the appropriate nova.compute.power_state
@ -607,6 +654,45 @@ def get_pvm_uuid(instance):
return pvm_uuid.convert_uuid_to_pvm(instance.uuid).upper()
def _uuid_set_high_bit(pvm_uuid):
"""Turns on the high bit of a uuid
PowerVM uuids always set the byte 0, bit 0 to 0.
So to convert it to an OpenStack uuid we may have to set the high bit.
:param uuid: A PowerVM compliant uuid
:returns: A standard format uuid string
"""
return "%x%s" % (int(pvm_uuid[0], 16) | 8, pvm_uuid[1:])
def get_instance(context, pvm_uuid):
"""Get an instance, if there is one, that corresponds to the PVM UUID
Not finding the instance can be a pretty normal case when handling events.
Don't log exceptions for those cases.
:param pvm_uuid: PowerVM UUID
:return: OpenStack instance or None
"""
uuid = pvm_uuid.lower()
def get_inst():
try:
return objects.Instance.get_by_uuid(context, uuid)
except exception.InstanceNotFound:
return objects.Instance.get_by_uuid(context,
_uuid_set_high_bit(uuid))
try:
return get_inst()
except exception.InstanceNotFound:
pass
except Exception as e:
LOG.debug('PowerVM UUID not found. %s', e)
return None
def get_cnas(adapter, instance, host_uuid):
"""Returns the current CNAs on the instance.

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