def _provision_resource(
self,
context,
weighed_host,
request_spec,
filter_properties,
requested_networks,
injected_files,
admin_password,
is_first_time,
instance_uuid=None,
legacy_bdm_in_spec=True,
):
"""Create the requested resource in this Zone."""
# NOTE(vish): add our current instance back into the request spec
request_spec["instance_uuids"] = [instance_uuid]
payload = dict(request_spec=request_spec, weighted_host=weighed_host.to_dict(), instance_id=instance_uuid)
self.notifier.info(context, "scheduler.run_instance.scheduled", payload)
# Update the metadata if necessary
scheduler_hints = filter_properties.get("scheduler_hints") or {}
group = scheduler_hints.get("group", None)
values = None
if group:
values = request_spec["instance_properties"]["system_metadata"]
values.update({"group": group})
values = {"system_metadata": values}
try:
updated_instance = driver.instance_update_db(context, instance_uuid, extra_values=values)
except exception.InstanceNotFound:
LOG.warning(_("Instance disappeared during scheduling"), context=context, instance_uuid=instance_uuid)
else:
scheduler_utils.populate_filter_properties(filter_properties, weighed_host.obj)
self.compute_rpcapi.run_instance(
context,
instance=updated_instance,
host=weighed_host.obj.host,
request_spec=request_spec,
filter_properties=filter_properties,
requested_networks=requested_networks,
injected_files=injected_files,
admin_password=admin_password,
is_first_time=is_first_time,
node=weighed_host.obj.nodename,
legacy_bdm_in_spec=legacy_bdm_in_spec,
)
def test_post_select_populate(self):
# Test addition of certain filter props after a node is selected.
retry = {'hosts': [], 'num_attempts': 1}
filter_properties = {'retry': retry}
host_state = host_manager.HostState('host', 'node')
host_state.limits['vcpus'] = 5
scheduler_utils.populate_filter_properties(filter_properties,
host_state)
self.assertEqual(['host', 'node'],
filter_properties['retry']['hosts'][0])
self.assertEqual({'vcpus': 5}, host_state.limits)
def prep_resize(self, context, image, request_spec, filter_properties,
instance, instance_type, reservations):
"""Tries to call schedule_prep_resize on the driver.
Sets instance vm_state to ACTIVE on NoHostFound
Sets vm_state to ERROR on other exceptions
"""
instance_uuid = instance['uuid']
with compute_utils.EventReporter(context, conductor_api.LocalAPI(),
'schedule', instance_uuid):
try:
request_spec['num_instances'] = len(
request_spec['instance_uuids'])
hosts = self.driver.select_destinations(
context, request_spec, filter_properties)
host_state = hosts[0]
scheduler_utils.populate_filter_properties(filter_properties,
host_state)
# context is not serializable
filter_properties.pop('context', None)
(host, node) = (host_state['host'], host_state['nodename'])
attrs = ['metadata', 'system_metadata', 'info_cache',
'security_groups']
inst_obj = instance_obj.Instance._from_db_object(
context, instance_obj.Instance(), instance,
expected_attrs=attrs)
self.compute_rpcapi.prep_resize(
context, image, inst_obj, instance_type, host,
reservations, request_spec=request_spec,
filter_properties=filter_properties, node=node)
except exception.NoValidHost as ex:
vm_state = instance.get('vm_state', vm_states.ACTIVE)
self._set_vm_state_and_notify('prep_resize',
{'vm_state': vm_state,
'task_state': None},
context, ex, request_spec)
if reservations:
QUOTAS.rollback(context, reservations)
except Exception as ex:
with excutils.save_and_reraise_exception():
self._set_vm_state_and_notify('prep_resize',
{'vm_state': vm_states.ERROR,
'task_state': None},
context, ex, request_spec)
if reservations:
QUOTAS.rollback(context, reservations)
def _test_populate_filter_props(self, host_state_obj=True,
with_retry=True,
force_hosts=None,
force_nodes=None):
if force_hosts is None:
force_hosts = []
if force_nodes is None:
force_nodes = []
if with_retry:
if not force_hosts and not force_nodes:
filter_properties = dict(retry=dict(hosts=[]))
else:
filter_properties = dict(force_hosts=force_hosts,
force_nodes=force_nodes)
else:
filter_properties = dict()
if host_state_obj:
class host_state(object):
host = 'fake-host'
nodename = 'fake-node'
limits = 'fake-limits'
else:
host_state = dict(host='fake-host',
nodename='fake-node',
limits='fake-limits')
scheduler_utils.populate_filter_properties(filter_properties,
host_state)
if with_retry and not force_hosts and not force_nodes:
# So we can check for 2 hosts
scheduler_utils.populate_filter_properties(filter_properties,
host_state)
if force_hosts:
expected_limits = None
else:
expected_limits = 'fake-limits'
self.assertEqual(expected_limits,
filter_properties.get('limits'))
if with_retry and not force_hosts and not force_nodes:
self.assertEqual([['fake-host', 'fake-node'],
['fake-host', 'fake-node']],
filter_properties['retry']['hosts'])
else:
self.assertNotIn('retry', filter_properties)
