# 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.
from heat_integrationtests.common import test
from heat_integrationtests.functional import functional_base
[docs]class HeatAutoscalingTest(functional_base.FunctionalTestsBase):
template = '''
heat_template_version: 2014-10-16
resources:
random_group:
type: OS::Heat::AutoScalingGroup
properties:
cooldown: 0
desired_capacity: 3
max_size: 5
min_size: 2
resource:
type: OS::Heat::RandomString
scale_up_policy:
type: OS::Heat::ScalingPolicy
properties:
adjustment_type: change_in_capacity
auto_scaling_group_id: { get_resource: random_group }
scaling_adjustment: 1
scale_down_policy:
type: OS::Heat::ScalingPolicy
properties:
adjustment_type: change_in_capacity
auto_scaling_group_id: { get_resource: random_group }
scaling_adjustment: -1
outputs:
all_values:
value: {get_attr: [random_group, outputs_list, value]}
value_0:
value: {get_attr: [random_group, resource.0.value]}
value_1:
value: {get_attr: [random_group, resource.1.value]}
value_2:
value: {get_attr: [random_group, resource.2.value]}
asg_size:
value: {get_attr: [random_group, current_size]}
'''
template_nested = '''
heat_template_version: 2014-10-16
resources:
random_group:
type: OS::Heat::AutoScalingGroup
properties:
desired_capacity: 3
max_size: 5
min_size: 2
resource:
type: randomstr.yaml
outputs:
all_values:
value: {get_attr: [random_group, outputs_list, random_str]}
value_0:
value: {get_attr: [random_group, resource.0.random_str]}
value_1:
value: {get_attr: [random_group, resource.1.random_str]}
value_2:
value: {get_attr: [random_group, resource.2.random_str]}
'''
template_randomstr = '''
heat_template_version: 2013-05-23
resources:
random_str:
type: OS::Heat::RandomString
outputs:
random_str:
value: {get_attr: [random_str, value]}
'''
def _assert_output_values(self, stack_id):
stack = self.client.stacks.get(stack_id)
all_values = self._stack_output(stack, 'all_values')
self.assertEqual(3, len(all_values))
self.assertEqual(all_values[0], self._stack_output(stack, 'value_0'))
self.assertEqual(all_values[1], self._stack_output(stack, 'value_1'))
self.assertEqual(all_values[2], self._stack_output(stack, 'value_2'))
[docs] def test_asg_scale_up_max_size(self):
stack_id = self.stack_create(template=self.template,
expected_status='CREATE_COMPLETE')
stack = self.client.stacks.get(stack_id)
asg_size = self._stack_output(stack, 'asg_size')
# Ensure that initial desired capacity is met
self.assertEqual(3, asg_size)
# send scale up signals and ensure that asg honors max_size
asg = self.client.resources.get(stack_id, 'random_group')
max_size = 5
for num in range(asg_size+1, max_size+2):
expected_resources = num if num <= max_size else max_size
self.client.resources.signal(stack_id, 'scale_up_policy')
test.call_until_true(self.conf.build_timeout,
self.conf.build_interval,
self.check_autoscale_complete,
asg.physical_resource_id, expected_resources)
[docs] def test_asg_scale_down_min_size(self):
stack_id = self.stack_create(template=self.template,
expected_status='CREATE_COMPLETE')
stack = self.client.stacks.get(stack_id)
asg_size = self._stack_output(stack, 'asg_size')
# Ensure that initial desired capacity is met
self.assertEqual(3, asg_size)
# send scale down signals and ensure that asg honors min_size
asg = self.client.resources.get(stack_id, 'random_group')
min_size = 2
for num in range(asg_size-1, 0, -1):
expected_resources = num if num >= min_size else min_size
self.client.resources.signal(stack_id, 'scale_down_policy')
test.call_until_true(self.conf.build_timeout,
self.conf.build_interval,
self.check_autoscale_complete,
asg.physical_resource_id, expected_resources)
[docs] def test_asg_cooldown(self):
cooldown_tmpl = self.template.replace('cooldown: 0',
'cooldown: 10')
stack_id = self.stack_create(template=cooldown_tmpl,
expected_status='CREATE_COMPLETE')
stack = self.client.stacks.get(stack_id)
asg_size = self._stack_output(stack, 'asg_size')
# Ensure that initial desired capacity is met
self.assertEqual(3, asg_size)
# send scale up signal.
# Since cooldown is in effect, number of resources should not change
asg = self.client.resources.get(stack_id, 'random_group')
expected_resources = 3
self.client.resources.signal(stack_id, 'scale_up_policy')
test.call_until_true(self.conf.build_timeout,
self.conf.build_interval,
self.check_autoscale_complete,
asg.physical_resource_id, expected_resources)
[docs] def test_path_attrs(self):
stack_id = self.stack_create(template=self.template)
expected_resources = {'random_group': 'OS::Heat::AutoScalingGroup',
'scale_up_policy': 'OS::Heat::ScalingPolicy',
'scale_down_policy': 'OS::Heat::ScalingPolicy'}
self.assertEqual(expected_resources, self.list_resources(stack_id))
self._assert_output_values(stack_id)
[docs] def test_path_attrs_nested(self):
files = {'randomstr.yaml': self.template_randomstr}
stack_id = self.stack_create(template=self.template_nested,
files=files)
expected_resources = {'random_group': 'OS::Heat::AutoScalingGroup'}
self.assertEqual(expected_resources, self.list_resources(stack_id))
self._assert_output_values(stack_id)
[docs]class AutoScalingGroupUpdateWithNoChanges(functional_base.FunctionalTestsBase):
template = '''
heat_template_version: 2013-05-23
resources:
test_group:
type: OS::Heat::AutoScalingGroup
properties:
desired_capacity: 0
max_size: 0
min_size: 0
resource:
type: OS::Heat::RandomString
test_policy:
type: OS::Heat::ScalingPolicy
properties:
adjustment_type: change_in_capacity
auto_scaling_group_id: { get_resource: test_group }
scaling_adjustment: 1
'''
[docs] def test_as_group_update_without_resource_changes(self):
stack_identifier = self.stack_create(template=self.template)
new_template = self.template.replace(
'scaling_adjustment: 1',
'scaling_adjustment: 2')
self.update_stack(stack_identifier, template=new_template)