heat/heat/tests/autoscaling/test_scaling_group.py

721 lines
30 KiB
Python

#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
import json
import mock
from oslo_config import cfg
import six
from heat.common import exception
from heat.common import grouputils
from heat.common import template_format
from heat.engine.clients.os import nova
from heat.engine import function
from heat.engine import rsrc_defn
from heat.engine import scheduler
from heat.tests.autoscaling import inline_templates
from heat.tests import common
from heat.tests.nova import fakes as fakes_nova
from heat.tests import utils
as_template = inline_templates.as_template
class TestAutoScalingGroupValidation(common.HeatTestCase):
def setUp(self):
super(TestAutoScalingGroupValidation, self).setUp()
cfg.CONF.set_default('heat_waitcondition_server_url',
'http://server.test:8000/v1/waitcondition')
def validate_scaling_group(self, t, stack, resource_name):
# create the launch configuration resource
conf = stack['LaunchConfig']
self.assertIsNone(conf.validate())
scheduler.TaskRunner(conf.create)()
self.assertEqual((conf.CREATE, conf.COMPLETE), conf.state)
# create the group resource
rsrc = stack[resource_name]
self.assertIsNone(rsrc.validate())
return rsrc
def test_toomany_vpc_zone_identifier(self):
t = template_format.parse(as_template)
properties = t['Resources']['WebServerGroup']['Properties']
properties['VPCZoneIdentifier'] = ['xxxx', 'yyyy']
stack = utils.parse_stack(t, params=inline_templates.as_params)
self.stub_SnapshotConstraint_validate()
self.stub_ImageConstraint_validate()
self.stub_FlavorConstraint_validate()
self.m.ReplayAll()
self.assertRaises(exception.NotSupported,
self.validate_scaling_group, t,
stack, 'WebServerGroup')
self.m.VerifyAll()
def test_invalid_min_size(self):
t = template_format.parse(as_template)
properties = t['Resources']['WebServerGroup']['Properties']
properties['MinSize'] = '-1'
properties['MaxSize'] = '2'
stack = utils.parse_stack(t, params=inline_templates.as_params)
self.stub_SnapshotConstraint_validate()
self.stub_ImageConstraint_validate()
self.stub_FlavorConstraint_validate()
self.m.ReplayAll()
e = self.assertRaises(exception.StackValidationFailed,
self.validate_scaling_group, t,
stack, 'WebServerGroup')
expected_msg = "The size of AutoScalingGroup can not be less than zero"
self.assertEqual(expected_msg, six.text_type(e))
self.m.VerifyAll()
def test_invalid_max_size(self):
t = template_format.parse(as_template)
properties = t['Resources']['WebServerGroup']['Properties']
properties['MinSize'] = '3'
properties['MaxSize'] = '1'
stack = utils.parse_stack(t, params=inline_templates.as_params)
self.stub_SnapshotConstraint_validate()
self.stub_ImageConstraint_validate()
self.stub_FlavorConstraint_validate()
self.m.ReplayAll()
e = self.assertRaises(exception.StackValidationFailed,
self.validate_scaling_group, t,
stack, 'WebServerGroup')
expected_msg = "MinSize can not be greater than MaxSize"
self.assertEqual(expected_msg, six.text_type(e))
self.m.VerifyAll()
def test_invalid_desiredcapacity(self):
t = template_format.parse(as_template)
properties = t['Resources']['WebServerGroup']['Properties']
properties['MinSize'] = '1'
properties['MaxSize'] = '3'
properties['DesiredCapacity'] = '4'
stack = utils.parse_stack(t, params=inline_templates.as_params)
self.stub_SnapshotConstraint_validate()
self.stub_ImageConstraint_validate()
self.stub_FlavorConstraint_validate()
self.m.ReplayAll()
e = self.assertRaises(exception.StackValidationFailed,
self.validate_scaling_group, t,
stack, 'WebServerGroup')
expected_msg = "DesiredCapacity must be between MinSize and MaxSize"
self.assertEqual(expected_msg, six.text_type(e))
self.m.VerifyAll()
def test_invalid_desiredcapacity_zero(self):
t = template_format.parse(as_template)
properties = t['Resources']['WebServerGroup']['Properties']
properties['MinSize'] = '1'
properties['MaxSize'] = '3'
properties['DesiredCapacity'] = '0'
stack = utils.parse_stack(t, params=inline_templates.as_params)
self.stub_SnapshotConstraint_validate()
self.stub_ImageConstraint_validate()
self.stub_FlavorConstraint_validate()
self.m.ReplayAll()
e = self.assertRaises(exception.StackValidationFailed,
self.validate_scaling_group, t,
stack, 'WebServerGroup')
expected_msg = "DesiredCapacity must be between MinSize and MaxSize"
self.assertEqual(expected_msg, six.text_type(e))
self.m.VerifyAll()
def test_validate_without_InstanceId_and_LaunchConfigurationName(self):
t = template_format.parse(as_template)
agp = t['Resources']['WebServerGroup']['Properties']
agp.pop('LaunchConfigurationName')
agp.pop('LoadBalancerNames')
stack = utils.parse_stack(t, params=inline_templates.as_params)
rsrc = stack['WebServerGroup']
error_msg = ("Either 'InstanceId' or 'LaunchConfigurationName' "
"must be provided.")
exc = self.assertRaises(exception.StackValidationFailed,
rsrc.validate)
self.assertIn(error_msg, six.text_type(exc))
def test_validate_with_InstanceId_and_LaunchConfigurationName(self):
t = template_format.parse(as_template)
agp = t['Resources']['WebServerGroup']['Properties']
agp['InstanceId'] = '5678'
stack = utils.parse_stack(t, params=inline_templates.as_params)
rsrc = stack['WebServerGroup']
error_msg = ("Either 'InstanceId' or 'LaunchConfigurationName' "
"must be provided.")
exc = self.assertRaises(exception.StackValidationFailed,
rsrc.validate)
self.assertIn(error_msg, six.text_type(exc))
def _stub_nova_server_get(self, not_found=False):
mock_server = mock.MagicMock()
mock_server.image = {'id': 'dd619705-468a-4f7d-8a06-b84794b3561a'}
mock_server.flavor = {'id': '1'}
mock_server.key_name = 'test'
mock_server.security_groups = [{u'name': u'hth_test'}]
if not_found:
self.patchobject(nova.NovaClientPlugin, 'get_server',
side_effect=exception.ServerNotFound(
server='5678'))
else:
self.patchobject(nova.NovaClientPlugin, 'get_server',
return_value=mock_server)
def test_scaling_group_create_with_instanceid(self):
t = template_format.parse(as_template)
agp = t['Resources']['WebServerGroup']['Properties']
agp['InstanceId'] = '5678'
agp.pop('LaunchConfigurationName')
agp.pop('LoadBalancerNames')
stack = utils.parse_stack(t, params=inline_templates.as_params)
rsrc = stack['WebServerGroup']
self._stub_nova_server_get()
self.m.ReplayAll()
_config, ins_props = rsrc._get_conf_properties()
self.assertEqual('dd619705-468a-4f7d-8a06-b84794b3561a',
ins_props['ImageId'])
self.assertEqual('test', ins_props['KeyName'])
self.assertEqual(['hth_test'], ins_props['SecurityGroups'])
self.assertEqual('1', ins_props['InstanceType'])
self.m.VerifyAll()
def test_scaling_group_create_with_instanceid_not_found(self):
t = template_format.parse(as_template)
agp = t['Resources']['WebServerGroup']['Properties']
agp.pop('LaunchConfigurationName')
agp['InstanceId'] = '5678'
stack = utils.parse_stack(t, params=inline_templates.as_params)
rsrc = stack['WebServerGroup']
self._stub_nova_server_get(not_found=True)
self.m.ReplayAll()
msg = ("Property error : "
"Resources.WebServerGroup.Properties.InstanceId: "
"Error validating value '5678': The server (5678) could "
"not be found.")
exc = self.assertRaises(exception.StackValidationFailed,
rsrc.validate)
self.assertIn(msg, six.text_type(exc))
self.m.VerifyAll()
class TestScalingGroupTags(common.HeatTestCase):
def setUp(self):
super(TestScalingGroupTags, self).setUp()
t = template_format.parse(as_template)
stack = utils.parse_stack(t, params=inline_templates.as_params)
self.group = stack['WebServerGroup']
def test_tags_default(self):
expected = [{'Key': 'metering.groupname',
'Value': u'WebServerGroup'},
{'Key': 'metering.AutoScalingGroupName',
'Value': u'WebServerGroup'}]
self.assertEqual(expected, self.group._tags())
def test_tags_with_extra(self):
self.group.properties.data['Tags'] = [
{'Key': 'fee', 'Value': 'foo'}]
expected = [{'Key': 'fee',
'Value': 'foo'},
{'Key': 'metering.groupname',
'Value': u'WebServerGroup'},
{'Key': 'metering.AutoScalingGroupName',
'Value': u'WebServerGroup'}]
self.assertEqual(expected, self.group._tags())
def test_tags_with_metering(self):
self.group.properties.data['Tags'] = [
{'Key': 'metering.fee', 'Value': 'foo'}]
expected = [{'Key': 'metering.fee', 'Value': 'foo'},
{'Key': 'metering.AutoScalingGroupName',
'Value': u'WebServerGroup'}]
self.assertEqual(expected, self.group._tags())
class TestInitialGroupSize(common.HeatTestCase):
scenarios = [
('000', dict(mins=0, maxs=0, desired=0, expected=0)),
('040', dict(mins=0, maxs=4, desired=0, expected=0)),
('253', dict(mins=2, maxs=5, desired=3, expected=3)),
('14n', dict(mins=1, maxs=4, desired=None, expected=1)),
]
def setUp(self):
super(TestInitialGroupSize, self).setUp()
cfg.CONF.set_default('heat_waitcondition_server_url',
'http://server.test:8000/v1/waitcondition')
def test_initial_size(self):
t = template_format.parse(as_template)
properties = t['Resources']['WebServerGroup']['Properties']
properties['MinSize'] = self.mins
properties['MaxSize'] = self.maxs
properties['DesiredCapacity'] = self.desired
stack = utils.parse_stack(t, params=inline_templates.as_params)
group = stack['WebServerGroup']
with mock.patch.object(group, '_create_template') as mock_cre_temp:
group.child_template()
mock_cre_temp.assert_called_once_with(self.expected)
class TestGroupAdjust(common.HeatTestCase):
def setUp(self):
super(TestGroupAdjust, self).setUp()
cfg.CONF.set_default('heat_waitcondition_server_url',
'http://server.test:8000/v1/waitcondition')
t = template_format.parse(as_template)
stack = utils.parse_stack(t, params=inline_templates.as_params)
self.group = stack['WebServerGroup']
self.stub_ImageConstraint_validate()
self.stub_FlavorConstraint_validate()
self.stub_SnapshotConstraint_validate()
self.assertIsNone(self.group.validate())
def test_scaling_policy_cooldown_toosoon(self):
"""If _cooldown_inprogress() returns True don't progress."""
dont_call = self.patchobject(grouputils, 'get_members')
with mock.patch.object(self.group, '_cooldown_inprogress',
return_value=True):
self.group.adjust(1)
self.assertEqual([], dont_call.call_args_list)
def test_scaling_same_capacity(self):
"""Alway resize even if the capacity is the same."""
self.patchobject(grouputils, 'get_size', return_value=3)
resize = self.patchobject(self.group, 'resize')
cd_stamp = self.patchobject(self.group, '_cooldown_timestamp')
notify = self.patch('heat.engine.notification.autoscaling.send')
self.patchobject(self.group, '_cooldown_inprogress',
return_value=False)
self.group.adjust(3, adjustment_type='ExactCapacity')
expected_notifies = [
mock.call(
capacity=3, suffix='start',
adjustment_type='ExactCapacity',
groupname=u'WebServerGroup',
message=u'Start resizing the group WebServerGroup',
adjustment=3,
stack=self.group.stack),
mock.call(
capacity=3, suffix='end',
adjustment_type='ExactCapacity',
groupname=u'WebServerGroup',
message=u'End resizing the group WebServerGroup',
adjustment=3,
stack=self.group.stack)]
self.assertEqual(expected_notifies, notify.call_args_list)
resize.assert_called_once_with(3)
cd_stamp.assert_called_once_with('ExactCapacity : 3')
def test_scale_up_min_adjustment(self):
self.patchobject(grouputils, 'get_size', return_value=1)
resize = self.patchobject(self.group, 'resize')
cd_stamp = self.patchobject(self.group, '_cooldown_timestamp')
notify = self.patch('heat.engine.notification.autoscaling.send')
self.patchobject(self.group, '_cooldown_inprogress',
return_value=False)
self.group.adjust(33, adjustment_type='PercentChangeInCapacity',
min_adjustment_step=2)
expected_notifies = [
mock.call(
capacity=1, suffix='start',
adjustment_type='PercentChangeInCapacity',
groupname=u'WebServerGroup',
message=u'Start resizing the group WebServerGroup',
adjustment=33,
stack=self.group.stack),
mock.call(
capacity=3, suffix='end',
adjustment_type='PercentChangeInCapacity',
groupname=u'WebServerGroup',
message=u'End resizing the group WebServerGroup',
adjustment=33,
stack=self.group.stack)]
self.assertEqual(expected_notifies, notify.call_args_list)
resize.assert_called_once_with(3)
cd_stamp.assert_called_once_with('PercentChangeInCapacity : 33')
def test_scale_down_min_adjustment(self):
self.patchobject(grouputils, 'get_size', return_value=5)
resize = self.patchobject(self.group, 'resize')
cd_stamp = self.patchobject(self.group, '_cooldown_timestamp')
notify = self.patch('heat.engine.notification.autoscaling.send')
self.patchobject(self.group, '_cooldown_inprogress',
return_value=False)
self.group.adjust(-33, adjustment_type='PercentChangeInCapacity',
min_adjustment_step=2)
expected_notifies = [
mock.call(
capacity=5, suffix='start',
adjustment_type='PercentChangeInCapacity',
groupname=u'WebServerGroup',
message=u'Start resizing the group WebServerGroup',
adjustment=-33,
stack=self.group.stack),
mock.call(
capacity=3, suffix='end',
adjustment_type='PercentChangeInCapacity',
groupname=u'WebServerGroup',
message=u'End resizing the group WebServerGroup',
adjustment=-33,
stack=self.group.stack)]
self.assertEqual(expected_notifies, notify.call_args_list)
resize.assert_called_once_with(3)
cd_stamp.assert_called_once_with('PercentChangeInCapacity : -33')
def test_scaling_policy_cooldown_ok(self):
self.patchobject(grouputils, 'get_members', return_value=[])
resize = self.patchobject(self.group, 'resize')
cd_stamp = self.patchobject(self.group, '_cooldown_timestamp')
notify = self.patch('heat.engine.notification.autoscaling.send')
self.patchobject(self.group, '_cooldown_inprogress',
return_value=False)
self.group.adjust(1)
expected_notifies = [
mock.call(
capacity=0, suffix='start', adjustment_type='ChangeInCapacity',
groupname=u'WebServerGroup',
message=u'Start resizing the group WebServerGroup',
adjustment=1,
stack=self.group.stack),
mock.call(
capacity=1, suffix='end',
adjustment_type='ChangeInCapacity',
groupname=u'WebServerGroup',
message=u'End resizing the group WebServerGroup',
adjustment=1,
stack=self.group.stack)]
self.assertEqual(expected_notifies, notify.call_args_list)
resize.assert_called_once_with(1)
cd_stamp.assert_called_once_with('ChangeInCapacity : 1')
def test_scaling_policy_resize_fail(self):
self.patchobject(grouputils, 'get_members', return_value=[])
self.patchobject(self.group, 'resize',
side_effect=ValueError('test error'))
notify = self.patch('heat.engine.notification.autoscaling.send')
self.patchobject(self.group, '_cooldown_inprogress',
return_value=False)
self.assertRaises(ValueError, self.group.adjust, 1)
expected_notifies = [
mock.call(
capacity=0, suffix='start',
adjustment_type='ChangeInCapacity',
groupname=u'WebServerGroup',
message=u'Start resizing the group WebServerGroup',
adjustment=1,
stack=self.group.stack),
mock.call(
capacity=0, suffix='error',
adjustment_type='ChangeInCapacity',
groupname=u'WebServerGroup',
message=u'test error',
adjustment=1,
stack=self.group.stack)]
self.assertEqual(expected_notifies, notify.call_args_list)
class TestGroupCrud(common.HeatTestCase):
def setUp(self):
super(TestGroupCrud, self).setUp()
cfg.CONF.set_default('heat_waitcondition_server_url',
'http://server.test:8000/v1/waitcondition')
t = template_format.parse(as_template)
stack = utils.parse_stack(t, params=inline_templates.as_params)
self.group = stack['WebServerGroup']
self.assertIsNone(self.group.validate())
def test_handle_create(self):
self.group.create_with_template = mock.Mock(return_value=None)
self.group.child_template = mock.Mock(return_value='{}')
self.group.handle_create()
self.group.child_template.assert_called_once_with()
self.group.create_with_template.assert_called_once_with('{}')
def test_handle_update_desired_cap(self):
self.group._try_rolling_update = mock.Mock(return_value=None)
self.group.adjust = mock.Mock(return_value=None)
props = {'DesiredCapacity': 4}
defn = rsrc_defn.ResourceDefinition(
'nopayload',
'AWS::AutoScaling::AutoScalingGroup',
props)
self.group.handle_update(defn, None, props)
self.group.adjust.assert_called_once_with(
4, adjustment_type='ExactCapacity')
self.group._try_rolling_update.assert_called_once_with(props)
def test_handle_update_desired_nocap(self):
self.group._try_rolling_update = mock.Mock(return_value=None)
self.group.adjust = mock.Mock(return_value=None)
get_size = self.patchobject(grouputils, 'get_size')
get_size.return_value = 6
props = {'Tags': []}
defn = rsrc_defn.ResourceDefinition(
'nopayload',
'AWS::AutoScaling::AutoScalingGroup',
props)
self.group.handle_update(defn, None, props)
self.group.adjust.assert_called_once_with(
6, adjustment_type='ExactCapacity')
self.group._try_rolling_update.assert_called_once_with(props)
def test_conf_properties_vpc_zone(self):
self.stub_ImageConstraint_validate()
self.stub_FlavorConstraint_validate()
self.stub_SnapshotConstraint_validate()
t = template_format.parse(as_template)
properties = t['Resources']['WebServerGroup']['Properties']
properties['VPCZoneIdentifier'] = ['xxxx']
stack = utils.parse_stack(t, params=inline_templates.as_params)
# create the launch configuration resource
conf = stack['LaunchConfig']
self.assertIsNone(conf.validate())
scheduler.TaskRunner(conf.create)()
self.assertEqual((conf.CREATE, conf.COMPLETE), conf.state)
group = stack['WebServerGroup']
config, props = group._get_conf_properties()
self.assertEqual('xxxx', props['SubnetId'])
conf.delete()
def test_update_in_failed(self):
self.group.state_set('CREATE', 'FAILED')
# to update the failed asg
self.group.adjust = mock.Mock(return_value=None)
new_defn = rsrc_defn.ResourceDefinition(
'asg', 'AWS::AutoScaling::AutoScalingGroup',
{'AvailabilityZones': ['nova'],
'LaunchConfigurationName': 'config',
'MaxSize': 5,
'MinSize': 1,
'DesiredCapacity': 2})
self.group.handle_update(new_defn, None, None)
self.group.adjust.assert_called_once_with(
2, adjustment_type='ExactCapacity')
def asg_tmpl_with_bad_updt_policy():
t = template_format.parse(inline_templates.as_template)
ag = t['Resources']['WebServerGroup']
ag["UpdatePolicy"] = {"foo": {}}
return json.dumps(t)
def asg_tmpl_with_default_updt_policy():
t = template_format.parse(inline_templates.as_template)
ag = t['Resources']['WebServerGroup']
ag["UpdatePolicy"] = {"AutoScalingRollingUpdate": {}}
return json.dumps(t)
def asg_tmpl_with_updt_policy():
t = template_format.parse(inline_templates.as_template)
ag = t['Resources']['WebServerGroup']
ag["UpdatePolicy"] = {"AutoScalingRollingUpdate": {
"MinInstancesInService": "1",
"MaxBatchSize": "2",
"PauseTime": "PT1S"
}}
return json.dumps(t)
class RollingUpdatePolicyTest(common.HeatTestCase):
def setUp(self):
super(RollingUpdatePolicyTest, self).setUp()
self.fc = fakes_nova.FakeClient()
self.stub_keystoneclient(username='test_stack.CfnLBUser')
self.stub_ImageConstraint_validate()
self.stub_FlavorConstraint_validate()
self.stub_SnapshotConstraint_validate()
cfg.CONF.set_default('heat_waitcondition_server_url',
'http://127.0.0.1:8000/v1/waitcondition')
def test_parse_without_update_policy(self):
tmpl = template_format.parse(inline_templates.as_template)
stack = utils.parse_stack(tmpl, params=inline_templates.as_params)
stack.validate()
grp = stack['WebServerGroup']
self.assertFalse(grp.update_policy['AutoScalingRollingUpdate'])
def test_parse_with_update_policy(self):
tmpl = template_format.parse(asg_tmpl_with_updt_policy())
stack = utils.parse_stack(tmpl, params=inline_templates.as_params)
stack.validate()
tmpl_grp = tmpl['Resources']['WebServerGroup']
tmpl_policy = tmpl_grp['UpdatePolicy']['AutoScalingRollingUpdate']
tmpl_batch_sz = int(tmpl_policy['MaxBatchSize'])
grp = stack['WebServerGroup']
self.assertTrue(grp.update_policy)
self.assertEqual(1, len(grp.update_policy))
self.assertIn('AutoScalingRollingUpdate', grp.update_policy)
policy = grp.update_policy['AutoScalingRollingUpdate']
self.assertTrue(policy and len(policy) > 0)
self.assertEqual(1, int(policy['MinInstancesInService']))
self.assertEqual(tmpl_batch_sz, int(policy['MaxBatchSize']))
self.assertEqual('PT1S', policy['PauseTime'])
def test_parse_with_default_update_policy(self):
tmpl = template_format.parse(asg_tmpl_with_default_updt_policy())
stack = utils.parse_stack(tmpl, params=inline_templates.as_params)
stack.validate()
grp = stack['WebServerGroup']
self.assertTrue(grp.update_policy)
self.assertEqual(1, len(grp.update_policy))
self.assertIn('AutoScalingRollingUpdate', grp.update_policy)
policy = grp.update_policy['AutoScalingRollingUpdate']
self.assertTrue(policy and len(policy) > 0)
self.assertEqual(0, int(policy['MinInstancesInService']))
self.assertEqual(1, int(policy['MaxBatchSize']))
self.assertEqual('PT0S', policy['PauseTime'])
def test_parse_with_bad_update_policy(self):
tmpl = template_format.parse(asg_tmpl_with_bad_updt_policy())
stack = utils.parse_stack(tmpl, params=inline_templates.as_params)
error = self.assertRaises(
exception.StackValidationFailed, stack.validate)
self.assertIn("foo", six.text_type(error))
def test_parse_with_bad_pausetime_in_update_policy(self):
tmpl = template_format.parse(asg_tmpl_with_default_updt_policy())
group = tmpl['Resources']['WebServerGroup']
policy = group['UpdatePolicy']['AutoScalingRollingUpdate']
policy['PauseTime'] = 'P1YT1H'
stack = utils.parse_stack(tmpl, params=inline_templates.as_params)
error = self.assertRaises(
exception.StackValidationFailed, stack.validate)
self.assertIn("Only ISO 8601 duration format", six.text_type(error))
class RollingUpdatePolicyDiffTest(common.HeatTestCase):
def setUp(self):
super(RollingUpdatePolicyDiffTest, self).setUp()
self.fc = fakes_nova.FakeClient()
self.stub_keystoneclient(username='test_stack.CfnLBUser')
cfg.CONF.set_default('heat_waitcondition_server_url',
'http://127.0.0.1:8000/v1/waitcondition')
def validate_update_policy_diff(self, current, updated):
# load current stack
current_tmpl = template_format.parse(current)
current_stack = utils.parse_stack(current_tmpl,
params=inline_templates.as_params)
# get the json snippet for the current InstanceGroup resource
current_grp = current_stack['WebServerGroup']
current_snippets = dict((n, r.parsed_template())
for n, r in current_stack.items())
current_grp_json = current_snippets[current_grp.name]
# load the updated stack
updated_tmpl = template_format.parse(updated)
updated_stack = utils.parse_stack(updated_tmpl,
params=inline_templates.as_params)
# get the updated json snippet for the InstanceGroup resource in the
# context of the current stack
updated_grp = updated_stack['WebServerGroup']
updated_grp_json = function.resolve(updated_grp.t)
# identify the template difference
tmpl_diff = updated_grp.update_template_diff(
updated_grp_json, current_grp_json)
updated_policy = (updated_grp.t['UpdatePolicy']
if 'UpdatePolicy' in updated_grp.t else None)
expected = {u'UpdatePolicy': updated_policy}
self.assertEqual(expected, tmpl_diff)
# test application of the new update policy in handle_update
update_snippet = rsrc_defn.ResourceDefinition(
current_grp.name,
current_grp.type(),
properties=updated_grp.t['Properties'],
update_policy=updated_policy)
current_grp._try_rolling_update = mock.MagicMock()
current_grp.adjust = mock.MagicMock()
current_grp.handle_update(update_snippet, tmpl_diff, None)
if updated_policy is None:
self.assertEqual({}, current_grp.update_policy.data)
else:
self.assertEqual(updated_policy, current_grp.update_policy.data)
def test_update_policy_added(self):
self.validate_update_policy_diff(inline_templates.as_template,
asg_tmpl_with_updt_policy())
def test_update_policy_updated(self):
updt_template = json.loads(asg_tmpl_with_updt_policy())
grp = updt_template['Resources']['WebServerGroup']
policy = grp['UpdatePolicy']['AutoScalingRollingUpdate']
policy['MinInstancesInService'] = '2'
policy['MaxBatchSize'] = '4'
policy['PauseTime'] = 'PT1M30S'
self.validate_update_policy_diff(asg_tmpl_with_updt_policy(),
json.dumps(updt_template))
def test_update_policy_removed(self):
self.validate_update_policy_diff(asg_tmpl_with_updt_policy(),
inline_templates.as_template)