def cast_to_compute_host(context, host, method, update_db=True, **kwargs):
"""Cast request to a compute host queue"""
if update_db:
# fall back on the id if the uuid is not present
instance_id = kwargs.get('instance_id', None)
instance_uuid = kwargs.get('instance_uuid', instance_id)
if instance_uuid is not None:
now = utils.utcnow()
db.instance_update(context, instance_uuid,
{'host': host, 'scheduled_at': now})
rpc.cast(context,
db.queue_get_for(context, 'compute', host),
{"method": method, "args": kwargs})
LOG.debug(_("Casted '%(method)s' to compute '%(host)s'") % locals())
def test_instance_update_with_instance_uuid(self):
""" test instance_update() works when an instance UUID is passed """
ctxt = context.get_admin_context()
# Create an instance with some metadata
metadata = {'host': 'foo'}
values = {'metadata': metadata}
instance = db.instance_create(ctxt, values)
# Update the metadata
metadata = {'host': 'bar'}
values = {'metadata': metadata}
db.instance_update(ctxt, instance.uuid, values)
# Retrieve the metadata to ensure it was successfully updated
instance_meta = db.instance_metadata_get(ctxt, instance.id)
self.assertEqual('bar', instance_meta['host'])
def test_instance_update_with_instance_uuid(self):
""" test instance_update() works when an instance UUID is passed """
ctxt = context.get_admin_context()
# Create an instance with some metadata
metadata = {'host': 'foo'}
values = {'metadata': metadata}
instance = db.instance_create(ctxt, values)
# Update the metadata
metadata = {'host': 'bar'}
values = {'metadata': metadata}
db.instance_update(ctxt, instance.uuid, values)
# Retrieve the metadata to ensure it was successfully updated
instance_meta = db.instance_metadata_get(ctxt, instance.id)
self.assertEqual('bar', instance_meta['host'])
def cast_to_compute_host(context, host, method, update_db=True, **kwargs):
"""Cast request to a compute host queue"""
if update_db:
# fall back on the id if the uuid is not present
instance_id = kwargs.get('instance_id', None)
instance_uuid = kwargs.get('instance_uuid', instance_id)
if instance_uuid is not None:
now = utils.utcnow()
db.instance_update(context, instance_uuid, {
'host': host,
'scheduled_at': now
})
rpc.cast(context, db.queue_get_for(context, 'compute', host), {
"method": method,
"args": kwargs
})
LOG.debug(_("Casted '%(method)s' to compute '%(host)s'") % locals())
def schedule_live_migration(self,
context,
instance_id,
dest,
block_migration=False):
"""Live migration scheduling method.
:param context:
:param instance_id:
:param dest: destination host
:return:
The host where instance is running currently.
Then scheduler send request that host.
"""
# Whether instance exists and is running.
instance_ref = db.instance_get(context, instance_id)
# Checking instance.
self._live_migration_src_check(context, instance_ref)
# Checking destination host.
self._live_migration_dest_check(context, instance_ref, dest,
block_migration)
# Common checking.
self._live_migration_common_check(context, instance_ref, dest,
block_migration)
# Changing instance_state.
values = {"vm_state": vm_states.MIGRATING}
db.instance_update(context, instance_id, values)
# Changing volume state
for volume_ref in instance_ref['volumes']:
db.volume_update(context, volume_ref['id'],
{'status': 'migrating'})
src = instance_ref['host']
cast_to_compute_host(context,
src,
'live_migration',
update_db=False,
instance_id=instance_id,
dest=dest,
block_migration=block_migration)
def _set_instance_error(self, method, context, ex, *args, **kwargs):
"""Sets VM to Error state"""
LOG.warning(_("Failed to schedule_%(method)s: %(ex)s") % locals())
if method != "start_instance" and method != "run_instance":
return
# FIXME(comstud): Clean this up after fully on UUIDs.
instance_id = kwargs.get('instance_uuid', kwargs.get('instance_id'))
if not instance_id:
# FIXME(comstud): We should make this easier. run_instance
# only sends a request_spec, and an instance may or may not
# have been created in the API (or scheduler) already. If it
# was created, there's a 'uuid' set in the instance_properties
# of the request_spec.
request_spec = kwargs.get('request_spec', {})
properties = request_spec.get('instance_properties', {})
instance_id = properties.get('uuid', {})
if instance_id:
LOG.warning(_("Setting instance %(instance_id)s to "
"ERROR state.") % locals())
db.instance_update(context, instance_id,
{'vm_state': vm_states.ERROR})
def schedule_live_migration(self, context, instance_id, dest,
block_migration=False):
"""Live migration scheduling method.
:param context:
:param instance_id:
:param dest: destination host
:return:
The host where instance is running currently.
Then scheduler send request that host.
"""
# Whether instance exists and is running.
instance_ref = db.instance_get(context, instance_id)
# Checking instance.
self._live_migration_src_check(context, instance_ref)
# Checking destination host.
self._live_migration_dest_check(context, instance_ref,
dest, block_migration)
# Common checking.
self._live_migration_common_check(context, instance_ref,
dest, block_migration)
# Changing instance_state.
values = {"vm_state": vm_states.MIGRATING}
db.instance_update(context, instance_id, values)
# Changing volume state
for volume_ref in instance_ref['volumes']:
db.volume_update(context,
volume_ref['id'],
{'status': 'migrating'})
src = instance_ref['host']
cast_to_compute_host(context, src, 'live_migration',
update_db=False,
instance_id=instance_id,
dest=dest,
block_migration=block_migration)
def test_instance_get_all_hung_in_rebooting(self):
ctxt = context.get_admin_context()
# Ensure no instances are returned.
results = db.instance_get_all_hung_in_rebooting(ctxt, 10)
self.assertEqual(0, len(results))
# Ensure one rebooting instance with updated_at older than 10 seconds
# is returned.
updated_at = datetime.datetime(2000, 01, 01, 12, 00, 00)
values = {"task_state": "rebooting", "updated_at": updated_at}
instance = db.instance_create(ctxt, values)
results = db.instance_get_all_hung_in_rebooting(ctxt, 10)
self.assertEqual(1, len(results))
db.instance_update(ctxt, instance.id, {"task_state": None})
# Ensure the newly rebooted instance is not returned.
updated_at = datetime.datetime.utcnow()
values = {"task_state": "rebooting", "updated_at": updated_at}
instance = db.instance_create(ctxt, values)
results = db.instance_get_all_hung_in_rebooting(ctxt, 10)
self.assertEqual(0, len(results))
db.instance_update(ctxt, instance.id, {"task_state": None})
def test_instance_get_all_hung_in_rebooting(self):
ctxt = context.get_admin_context()
# Ensure no instances are returned.
results = db.instance_get_all_hung_in_rebooting(ctxt, 10)
self.assertEqual(0, len(results))
# Ensure one rebooting instance with updated_at older than 10 seconds
# is returned.
updated_at = datetime.datetime(2000, 01, 01, 12, 00, 00)
values = {"task_state": "rebooting", "updated_at": updated_at}
instance = db.instance_create(ctxt, values)
results = db.instance_get_all_hung_in_rebooting(ctxt, 10)
self.assertEqual(1, len(results))
db.instance_update(ctxt, instance.id, {"task_state": None})
# Ensure the newly rebooted instance is not returned.
updated_at = datetime.datetime.utcnow()
values = {"task_state": "rebooting", "updated_at": updated_at}
instance = db.instance_create(ctxt, values)
results = db.instance_get_all_hung_in_rebooting(ctxt, 10)
self.assertEqual(0, len(results))
db.instance_update(ctxt, instance.id, {"task_state": None})