def get_instances_without_type(
context: 'nova_context.RequestContext',
cell_uuid: ty.Optional[str] = None,
) -> ty.List[objects.instance.Instance]:
"""Find instances without hw_machine_type set, optionally within a cell.
:param context: Request context
:param cell_uuid: Optional cell UUID to look within
:returns: A list of Instance objects or an empty list
"""
if cell_uuid:
cell_mapping = objects.CellMapping.get_by_uuid(context, cell_uuid)
results = nova_context.scatter_gather_single_cell(
context,
cell_mapping,
_get_instances_without_mtype
)
results = nova_context.scatter_gather_skip_cell0(
context,
_get_instances_without_mtype
)
# Flatten the returned list of results into a single list of instances
return list(itertools.chain(*[r for c, r in results.items()]))
def test_scatter_gather_cells(self):
self._create_cell_mappings()
# Create an instance in cell0
with context.target_cell(self.context, self.mapping0) as cctxt:
instance = objects.Instance(context=cctxt, uuid=uuids.instance0,
project_id='fake-project')
instance.create()
# Create an instance in first cell
with context.target_cell(self.context, self.mapping1) as cctxt:
instance = objects.Instance(context=cctxt, uuid=uuids.instance1,
project_id='fake-project')
instance.create()
# Create an instance in second cell
with context.target_cell(self.context, self.mapping2) as cctxt:
instance = objects.Instance(context=cctxt, uuid=uuids.instance2,
project_id='fake-project')
instance.create()
filters = {'deleted': False, 'project_id': 'fake-project'}
results = context.scatter_gather_all_cells(
self.context, objects.InstanceList.get_by_filters, filters,
sort_dir='asc')
instances = objects.InstanceList()
for result in results.values():
instances = instances + result
# Should have 3 instances across cells
self.assertEqual(3, len(instances))
# Verify we skip cell0 when specified
results = context.scatter_gather_skip_cell0(
self.context, objects.InstanceList.get_by_filters, filters)
instances = objects.InstanceList()
for result in results.values():
instances = instances + result
# Should have gotten only the instances from the last two cells
self.assertEqual(2, len(instances))
self.assertIn(self.mapping1.uuid, results)
self.assertIn(self.mapping2.uuid, results)
instance_uuids = [inst.uuid for inst in instances]
self.assertIn(uuids.instance1, instance_uuids)
self.assertIn(uuids.instance2, instance_uuids)
# Try passing one cell
results = context.scatter_gather_cells(
self.context, [self.mapping1], 60,
objects.InstanceList.get_by_filters, filters)
instances = objects.InstanceList()
for result in results.values():
instances = instances + result
# Should have gotten only one instance from cell1
self.assertEqual(1, len(instances))
self.assertIn(self.mapping1.uuid, results)
self.assertEqual(uuids.instance1, instances[0].uuid)
def test_scatter_gather_skip_cell0(self, mock_get_all, mock_scatter):
ctxt = context.get_context()
mapping0 = objects.CellMapping(database_connection='fake://db0',
transport_url='none:///',
uuid=objects.CellMapping.CELL0_UUID)
mapping1 = objects.CellMapping(database_connection='fake://db1',
transport_url='fake://mq1',
uuid=uuids.cell1)
mock_get_all.return_value = objects.CellMappingList(
objects=[mapping0, mapping1])
filters = {'deleted': False}
context.scatter_gather_skip_cell0(
ctxt, objects.InstanceList.get_by_filters, filters, sort_dir='foo')
mock_scatter.assert_called_once_with(
ctxt, [mapping1], 60, objects.InstanceList.get_by_filters, filters,
sort_dir='foo')
def test_scatter_gather_skip_cell0(self, mock_get_all, mock_scatter):
ctxt = context.get_context()
mapping0 = objects.CellMapping(database_connection='fake://db0',
transport_url='none:///',
uuid=objects.CellMapping.CELL0_UUID)
mapping1 = objects.CellMapping(database_connection='fake://db1',
transport_url='fake://mq1',
uuid=uuids.cell1)
mock_get_all.return_value = objects.CellMappingList(
objects=[mapping0, mapping1])
filters = {'deleted': False}
context.scatter_gather_skip_cell0(
ctxt, objects.InstanceList.get_by_filters, filters, sort_dir='foo')
mock_scatter.assert_called_once_with(
ctxt, [mapping1], 60, objects.InstanceList.get_by_filters, filters,
sort_dir='foo')
def get_marker_record(self, ctx, marker):
"""Get the marker migration from its cell.
This returns the marker migration from the cell in which it lives
"""
results = context.scatter_gather_skip_cell0(
ctx, db.migration_get_by_uuid, marker)
db_migration = None
for result_cell_uuid, result in results.items():
if not context.is_cell_failure_sentinel(result):
db_migration = result
cell_uuid = result_cell_uuid
break
if not db_migration:
raise exception.MarkerNotFound(marker=marker)
return cell_uuid, db_migration
def get_marker_record(self, ctx, marker):
"""Get the marker migration from its cell.
This returns the marker migration from the cell in which it lives
"""
results = context.scatter_gather_skip_cell0(
ctx, db.migration_get_by_uuid, marker)
db_migration = None
for result in results.values():
if result not in (context.did_not_respond_sentinel,
context.raised_exception_sentinel):
db_migration = result
break
if not db_migration:
raise exception.MarkerNotFound(marker=marker)
return db_migration
def get_marker_record(self, ctx, marker):
"""Get the marker migration from its cell.
This returns the marker migration from the cell in which it lives
"""
results = context.scatter_gather_skip_cell0(ctx,
db.migration_get_by_uuid,
marker)
db_migration = None
for result in results.values():
if result not in (context.did_not_respond_sentinel,
context.raised_exception_sentinel):
db_migration = result
break
if not db_migration:
raise exception.MarkerNotFound(marker=marker)
return db_migration
def get_marker_record(self, ctx, marker):
"""Get the marker migration from its cell.
This returns the marker migration from the cell in which it lives
"""
results = context.scatter_gather_skip_cell0(ctx,
db.migration_get_by_uuid,
marker)
db_migration = None
for result_cell_uuid, result in results.items():
if not context.is_cell_failure_sentinel(result):
db_migration = result
cell_uuid = result_cell_uuid
break
if not db_migration:
raise exception.MarkerNotFound(marker=marker)
return cell_uuid, db_migration
def _show(self, req, id, rdp_only):
"""Checks a console auth token and returns the related connect info."""
context = req.environ['nova.context']
context.can(cat_policies.BASE_POLICY_NAME)
token = id
if not token:
msg = _("token not provided")
raise webob.exc.HTTPBadRequest(explanation=msg)
connect_info = None
if CONF.workarounds.enable_consoleauth:
connect_info = self._consoleauth_rpcapi.check_token(context, token)
else:
results = nova_context.scatter_gather_skip_cell0(
context, objects.ConsoleAuthToken.validate, token)
# NOTE(melwitt): Console token auths are stored in cell databases,
# but with only the token as a request param, we can't know which
# cell database contains the token's corresponding connection info.
# So, we must query all cells for the info and we can break the
# loop as soon as we find a result because the token is associated
# with one instance, which can only be in one cell.
for result in results.values():
if result not in (nova_context.did_not_respond_sentinel,
nova_context.raised_exception_sentinel):
connect_info = result.to_dict()
break
if not connect_info:
raise webob.exc.HTTPNotFound(explanation=_("Token not found"))
console_type = connect_info.get('console_type')
if rdp_only and console_type != "rdp-html5":
raise webob.exc.HTTPUnauthorized(
explanation=_("The requested console type details are not "
"accessible"))
return {
'console': {
i: connect_info[i]
for i in
['instance_uuid', 'host', 'port', 'internal_access_path']
if i in connect_info
}
}
def _show(self, req, id, rdp_only):
"""Checks a console auth token and returns the related connect info."""
context = req.environ['nova.context']
context.can(cat_policies.BASE_POLICY_NAME)
token = id
if not token:
msg = _("token not provided")
raise webob.exc.HTTPBadRequest(explanation=msg)
connect_info = None
results = nova_context.scatter_gather_skip_cell0(
context, objects.ConsoleAuthToken.validate, token)
# NOTE(melwitt): Console token auths are stored in cell databases,
# but with only the token as a request param, we can't know which
# cell database contains the token's corresponding connection info.
# So, we must query all cells for the info and we can break the
# loop as soon as we find a result because the token is associated
# with one instance, which can only be in one cell.
for result in results.values():
if not nova_context.is_cell_failure_sentinel(result):
connect_info = result
break
if not connect_info:
raise webob.exc.HTTPNotFound(explanation=_("Token not found"))
console_type = connect_info.console_type
if rdp_only and console_type != "rdp-html5":
raise webob.exc.HTTPUnauthorized(
explanation=_("The requested console type details are not "
"accessible"))
return {
'console': {
'instance_uuid': connect_info.instance_uuid,
'host': connect_info.host,
'port': connect_info.port,
'internal_access_path': connect_info.internal_access_path,
}
}
def _show(self, req, id, rdp_only):
"""Checks a console auth token and returns the related connect info."""
context = req.environ['nova.context']
context.can(cat_policies.BASE_POLICY_NAME)
token = id
if not token:
msg = _("token not provided")
raise webob.exc.HTTPBadRequest(explanation=msg)
connect_info = None
if CONF.workarounds.enable_consoleauth:
connect_info = self._consoleauth_rpcapi.check_token(context, token)
else:
results = nova_context.scatter_gather_skip_cell0(
context, objects.ConsoleAuthToken.validate, token)
# NOTE(melwitt): Console token auths are stored in cell databases,
# but with only the token as a request param, we can't know which
# cell database contains the token's corresponding connection info.
# So, we must query all cells for the info and we can break the
# loop as soon as we find a result because the token is associated
# with one instance, which can only be in one cell.
for result in results.values():
if not nova_context.is_cell_failure_sentinel(result):
connect_info = result.to_dict()
break
if not connect_info:
raise webob.exc.HTTPNotFound(explanation=_("Token not found"))
console_type = connect_info.get('console_type')
if rdp_only and console_type != "rdp-html5":
raise webob.exc.HTTPUnauthorized(
explanation=_("The requested console type details are not "
"accessible"))
return {'console':
{i: connect_info[i]
for i in ['instance_uuid', 'host', 'port',
'internal_access_path']
if i in connect_info}}
def _get_instance_group_hosts_all_cells(context, instance_group):
def get_hosts_in_cell(cell_context):
# NOTE(melwitt): The obj_alternate_context is going to mutate the
# cell_instance_group._context and to do this in a scatter-gather
# with multiple parallel greenthreads, we need the instance groups
# to be separate object copies.
cell_instance_group = instance_group.obj_clone()
with cell_instance_group.obj_alternate_context(cell_context):
return cell_instance_group.get_hosts()
results = nova_context.scatter_gather_skip_cell0(context,
get_hosts_in_cell)
hosts = []
for result in results.values():
# TODO(melwitt): We will need to handle scenarios where an exception
# is raised while targeting a cell and when a cell does not respond
# as part of the "handling of a down cell" spec:
# https://blueprints.launchpad.net/nova/+spec/handling-down-cell
if not nova_context.is_cell_failure_sentinel(result):
hosts.extend(result)
return hosts
def _get_instance_group_hosts_all_cells(context, instance_group):
def get_hosts_in_cell(cell_context):
# NOTE(melwitt): The obj_alternate_context is going to mutate the
# cell_instance_group._context and to do this in a scatter-gather
# with multiple parallel greenthreads, we need the instance groups
# to be separate object copies.
cell_instance_group = instance_group.obj_clone()
with cell_instance_group.obj_alternate_context(cell_context):
return cell_instance_group.get_hosts()
results = nova_context.scatter_gather_skip_cell0(context,
get_hosts_in_cell)
hosts = []
for result in results.values():
# TODO(melwitt): We will need to handle scenarios where an exception
# is raised while targeting a cell and when a cell does not respond
# as part of the "handling of a down cell" spec:
# https://blueprints.launchpad.net/nova/+spec/handling-down-cell
if not nova_context.is_cell_failure_sentinel(result):
hosts.extend(result)
return hosts
