def test_run_instance_no_hosts(self):
sched = fakes.FakeFilterScheduler()
uuid = 'fake-uuid1'
fake_context = context.RequestContext('user', 'project')
instance_properties = {'project_id': 1, 'os_type': 'Linux'}
request_spec = {
'instance_type': {
'memory_mb': 1,
'root_gb': 1,
'ephemeral_gb': 0
},
'instance_properties': instance_properties,
'instance_uuids': [uuid]
}
self.mox.StubOutWithMock(compute_utils, 'add_instance_fault_from_exc')
self.mox.StubOutWithMock(db, 'instance_update_and_get_original')
old_ref, new_ref = db.instance_update_and_get_original(
fake_context, uuid, {
'vm_state': vm_states.ERROR,
'task_state': None
}).AndReturn(({}, {}))
compute_utils.add_instance_fault_from_exc(
fake_context, new_ref, mox.IsA(exception.NoValidHost),
mox.IgnoreArg())
self.mox.StubOutWithMock(db, 'compute_node_get_all')
db.compute_node_get_all(mox.IgnoreArg()).AndReturn([])
self.mox.ReplayAll()
sched.schedule_run_instance(fake_context, request_spec, None, None,
None, None, {}, False)
def test_schedule_large_host_pool(self, mock_get_extra):
"""Hosts should still be chosen if pool size
is larger than number of filtered hosts.
"""
sched = fakes.FakeFilterScheduler()
fake_context = context.RequestContext('user', 'project',
is_admin=True)
self.flags(scheduler_host_subset_size=20)
self.stubs.Set(sched.host_manager, 'get_filtered_hosts',
fake_get_filtered_hosts)
fakes.mox_host_manager_db_calls(self.mox, fake_context)
instance_properties = {'project_id': 1,
'root_gb': 512,
'memory_mb': 512,
'ephemeral_gb': 0,
'vcpus': 1,
'os_type': 'Linux',
'uuid': 'fake-uuid'}
request_spec = dict(instance_properties=instance_properties,
instance_type={})
filter_properties = {}
self.mox.ReplayAll()
hosts = sched._schedule(self.context, request_spec,
filter_properties=filter_properties)
# one host should be chose
self.assertEqual(len(hosts), 1)
def test_handles_deleted_instance(self):
"""Test instance deletion while being scheduled."""
def _raise_instance_not_found(*args, **kwargs):
raise exception.InstanceNotFound(instance_id='123')
self.stubs.Set(driver, 'instance_update_db', _raise_instance_not_found)
sched = fakes.FakeFilterScheduler()
fake_context = context.RequestContext('user', 'project')
host_state = host_manager.HostState('host2', 'node2')
weighted_host = weights.WeighedHost(host_state, 1.42)
filter_properties = {}
uuid = 'fake-uuid1'
instance_properties = {'project_id': 1, 'os_type': 'Linux'}
request_spec = {
'instance_type': {
'memory_mb': 1,
'local_gb': 1
},
'instance_properties': instance_properties,
'instance_uuids': [uuid]
}
sched._provision_resource(fake_context, weighted_host, request_spec,
filter_properties, None, None, None, None)
def test_retry_attempt_two(self):
# Test retry logic when re-scheduling.
self.flags(scheduler_max_attempts=2)
sched = fakes.FakeFilterScheduler()
request_spec = dict(instance_properties={},
instance_uuids=['fake-uuid1'])
filter_properties = {'retry': {'num_attempts': 1}}
expected_filter_properties = {'retry': {'num_attempts': 2}}
self.mox.StubOutWithMock(sched, '_schedule')
self.mox.StubOutWithMock(sched, '_provision_resource')
sched._schedule(self.context, request_spec,
expected_filter_properties).AndReturn(['host1'])
sched._provision_resource(self.context,
'host1',
request_spec,
expected_filter_properties,
None,
None,
None,
None,
instance_uuid='fake-uuid1',
legacy_bdm_in_spec=False)
self.mox.ReplayAll()
sched.schedule_run_instance(self.context, request_spec, None, None,
None, None, filter_properties, False)
def test_retry_force_nodes(self):
# Retry info should not get populated when re-scheduling is off.
self.flags(scheduler_max_attempts=2)
sched = fakes.FakeFilterScheduler()
request_spec = dict(instance_properties={},
instance_uuids=['fake-uuid1'])
filter_properties = {'force_nodes': ['force_node']}
self.mox.StubOutWithMock(sched, '_schedule')
self.mox.StubOutWithMock(sched, '_provision_resource')
sched._schedule(self.context, request_spec,
filter_properties).AndReturn(['host1'])
sched._provision_resource(self.context,
'host1',
request_spec,
filter_properties,
None,
None,
None,
None,
instance_uuid='fake-uuid1',
legacy_bdm_in_spec=False)
self.mox.ReplayAll()
sched.schedule_run_instance(self.context, request_spec, None, None,
None, None, filter_properties, False)
def test_select_destinations(self, mock_get_extra):
"""select_destinations is basically a wrapper around _schedule().
Similar to the _schedule tests, this just does a happy path test to
ensure there is nothing glaringly wrong.
"""
self.next_weight = 1.0
selected_hosts = []
selected_nodes = []
def _fake_weigh_objects(_self, functions, hosts, options):
self.next_weight += 2.0
host_state = hosts[0]
selected_hosts.append(host_state.host)
selected_nodes.append(host_state.nodename)
return [weights.WeighedHost(host_state, self.next_weight)]
sched = fakes.FakeFilterScheduler()
fake_context = context.RequestContext('user', 'project', is_admin=True)
self.stubs.Set(sched.host_manager, 'get_filtered_hosts',
fake_get_filtered_hosts)
self.stubs.Set(weights.HostWeightHandler, 'get_weighed_objects',
_fake_weigh_objects)
fakes.mox_host_manager_db_calls(self.mox, fake_context)
request_spec = {
'instance_type': {
'memory_mb': 512,
'root_gb': 512,
'ephemeral_gb': 0,
'vcpus': 1
},
'instance_properties': {
'project_id': 1,
'root_gb': 512,
'memory_mb': 512,
'ephemeral_gb': 0,
'vcpus': 1,
'os_type': 'Linux',
'uuid': 'fake-uuid'
},
'num_instances': 1
}
self.mox.ReplayAll()
dests = sched.select_destinations(fake_context, request_spec, {})
(host, node) = (dests[0]['host'], dests[0]['nodename'])
self.assertEqual(host, selected_hosts[0])
self.assertEqual(node, selected_nodes[0])
def test_retry_exceeded_max_attempts(self):
# Test for necessary explosion when max retries is exceeded and that
# the information needed in request_spec is still present for error
# handling
self.flags(scheduler_max_attempts=2)
sched = fakes.FakeFilterScheduler()
request_spec = dict(instance_properties={},
instance_uuids=['fake-uuid1'])
filter_properties = {'retry': {'num_attempts': 2}}
self.mox.ReplayAll()
self.assertRaises(exception.NoValidHost, sched.schedule_run_instance,
self.context, request_spec, None, None, None, None,
filter_properties, False)
def test_schedule_chooses_best_host(self, mock_get_extra):
"""If scheduler_host_subset_size is 1, the largest host with greatest
weight should be returned.
"""
self.flags(scheduler_host_subset_size=1)
sched = fakes.FakeFilterScheduler()
fake_context = context.RequestContext('user', 'project', is_admin=True)
self.stubs.Set(sched.host_manager, 'get_filtered_hosts',
fake_get_filtered_hosts)
fakes.mox_host_manager_db_calls(self.mox, fake_context)
self.next_weight = 50
def _fake_weigh_objects(_self, functions, hosts, options):
this_weight = self.next_weight
self.next_weight = 0
host_state = hosts[0]
return [weights.WeighedHost(host_state, this_weight)]
instance_properties = {
'project_id': 1,
'root_gb': 512,
'memory_mb': 512,
'ephemeral_gb': 0,
'vcpus': 1,
'os_type': 'Linux',
'uuid': 'fake-uuid'
}
request_spec = dict(instance_properties=instance_properties,
instance_type={})
self.stubs.Set(weights.HostWeightHandler, 'get_weighed_objects',
_fake_weigh_objects)
filter_properties = {}
self.mox.ReplayAll()
hosts = sched._schedule(self.context,
request_spec,
filter_properties=filter_properties)
# one host should be chosen
self.assertEqual(1, len(hosts))
self.assertEqual(50, hosts[0].weight)
def test_schedule_happy_day(self, mock_get_extra):
"""Make sure there's nothing glaringly wrong with _schedule()
by doing a happy day pass through.
"""
self.next_weight = 1.0
def _fake_weigh_objects(_self, functions, hosts, options):
self.next_weight += 2.0
host_state = hosts[0]
return [weights.WeighedHost(host_state, self.next_weight)]
sched = fakes.FakeFilterScheduler()
fake_context = context.RequestContext('user', 'project', is_admin=True)
self.stubs.Set(sched.host_manager, 'get_filtered_hosts',
fake_get_filtered_hosts)
self.stubs.Set(weights.HostWeightHandler, 'get_weighed_objects',
_fake_weigh_objects)
fakes.mox_host_manager_db_calls(self.mox, fake_context)
request_spec = {
'num_instances': 10,
'instance_type': {
'memory_mb': 512,
'root_gb': 512,
'ephemeral_gb': 0,
'vcpus': 1
},
'instance_properties': {
'project_id': 1,
'root_gb': 512,
'memory_mb': 512,
'ephemeral_gb': 0,
'vcpus': 1,
'os_type': 'Linux',
'uuid': 'fake-uuid'
}
}
self.mox.ReplayAll()
weighed_hosts = sched._schedule(fake_context, request_spec, {})
self.assertEqual(len(weighed_hosts), 10)
for weighed_host in weighed_hosts:
self.assertIsNotNone(weighed_host.obj)
def test_prep_resize_post_populates_retry(self):
self.manager.driver = fakes.FakeFilterScheduler()
image = 'image'
instance_uuid = 'fake-instance-id'
instance = fake_instance.fake_db_instance(uuid=instance_uuid)
instance_properties = {'project_id': 'fake', 'os_type': 'Linux'}
instance_type = "m1.tiny"
request_spec = {
'instance_properties': instance_properties,
'instance_type': instance_type,
'instance_uuids': [instance_uuid]
}
retry = {'hosts': [], 'num_attempts': 1}
filter_properties = {'retry': retry}
reservations = None
hosts = [dict(host='host', nodename='node', limits={})]
self._mox_schedule_method_helper('select_destinations')
self.manager.driver.select_destinations(
self.context, request_spec, filter_properties).AndReturn(hosts)
self.mox.StubOutWithMock(self.manager.compute_rpcapi, 'prep_resize')
self.manager.compute_rpcapi.prep_resize(
self.context,
image,
mox.IsA(objects.Instance),
instance_type,
'host',
reservations,
request_spec=request_spec,
filter_properties=filter_properties,
node='node')
self.mox.ReplayAll()
self.manager.prep_resize(self.context, image, request_spec,
filter_properties, instance, instance_type,
reservations)
self.assertEqual([['host', 'node']],
filter_properties['retry']['hosts'])
def test_run_instance_non_admin(self):
self.was_admin = False
def fake_get(context, *args, **kwargs):
# make sure this is called with admin context, even though
# we're using user context below
self.was_admin = context.is_admin
return {}
sched = fakes.FakeFilterScheduler()
self.stubs.Set(sched.host_manager, 'get_all_host_states', fake_get)
fake_context = context.RequestContext('user', 'project')
uuid = 'fake-uuid1'
instance_properties = {'project_id': 1, 'os_type': 'Linux'}
request_spec = {
'instance_type': {
'memory_mb': 1,
'local_gb': 1
},
'instance_properties': instance_properties,
'instance_uuids': [uuid]
}
self.mox.StubOutWithMock(compute_utils, 'add_instance_fault_from_exc')
self.mox.StubOutWithMock(db, 'instance_update_and_get_original')
old_ref, new_ref = db.instance_update_and_get_original(
fake_context, uuid, {
'vm_state': vm_states.ERROR,
'task_state': None
}).AndReturn(({}, {}))
compute_utils.add_instance_fault_from_exc(
fake_context, new_ref, mox.IsA(exception.NoValidHost),
mox.IgnoreArg())
self.mox.ReplayAll()
sched.schedule_run_instance(fake_context, request_spec, None, None,
None, None, {}, False)
self.assertTrue(self.was_admin)