314 lines
13 KiB
Python
314 lines
13 KiB
Python
#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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import datetime
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import mock
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from oslo_utils import timeutils
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import six
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from heat.common import exception
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from heat.common import template_format
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from heat.engine import resource
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from heat.engine import scheduler
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from heat.tests.autoscaling import inline_templates
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from heat.tests import common
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from heat.tests import utils
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as_template = inline_templates.as_heat_template
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as_params = inline_templates.as_params
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class TestAutoScalingPolicy(common.HeatTestCase):
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def create_scaling_policy(self, t, stack, resource_name):
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rsrc = stack[resource_name]
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self.assertIsNone(rsrc.validate())
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scheduler.TaskRunner(rsrc.create)()
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self.assertEqual((rsrc.CREATE, rsrc.COMPLETE), rsrc.state)
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return rsrc
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def test_validate_scaling_policy_ok(self):
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t = template_format.parse(as_template)
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t['resources']['my-policy']['properties'][
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'scaling_adjustment'] = 33
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t['resources']['my-policy']['properties'][
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'adjustment_type'] = 'percent_change_in_capacity'
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t['resources']['my-policy']['properties'][
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'min_adjustment_step'] = 2
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stack = utils.parse_stack(t)
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self.assertIsNone(stack.validate())
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def test_validate_scaling_policy_error(self):
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t = template_format.parse(as_template)
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t['resources']['my-policy']['properties'][
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'scaling_adjustment'] = 1
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t['resources']['my-policy']['properties'][
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'adjustment_type'] = 'change_in_capacity'
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t['resources']['my-policy']['properties'][
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'min_adjustment_step'] = 2
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stack = utils.parse_stack(t)
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ex = self.assertRaises(exception.ResourcePropertyValueDependency,
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stack.validate)
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self.assertIn('min_adjustment_step property should only '
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'be specified for adjustment_type with '
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'value percent_change_in_capacity.', six.text_type(ex))
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def test_scaling_policy_bad_group(self):
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t = template_format.parse(inline_templates.as_heat_template_bad_group)
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stack = utils.parse_stack(t)
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up_policy = self.create_scaling_policy(t, stack,
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'my-policy')
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ex = self.assertRaises(exception.ResourceFailure, up_policy.signal)
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self.assertIn('Alarm my-policy could '
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'not find scaling group', six.text_type(ex))
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def test_scaling_policy_adjust_no_action(self):
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t = template_format.parse(as_template)
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stack = utils.parse_stack(t, params=as_params)
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up_policy = self.create_scaling_policy(t, stack,
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'my-policy')
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group = stack['my-group']
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self.patchobject(group, 'adjust',
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side_effect=resource.NoActionRequired())
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mock_fin_scaling = self.patchobject(up_policy, '_finished_scaling')
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with mock.patch.object(up_policy, '_is_scaling_allowed',
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return_value=True) as mock_isa:
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self.assertRaises(resource.NoActionRequired,
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up_policy.handle_signal)
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mock_isa.assert_called_once_with()
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mock_fin_scaling.assert_called_once_with('change_in_capacity : 1',
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size_changed=False)
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def test_scaling_policy_adjust_size_changed(self):
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t = template_format.parse(as_template)
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stack = utils.parse_stack(t, params=as_params)
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up_policy = self.create_scaling_policy(t, stack,
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'my-policy')
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group = stack['my-group']
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self.patchobject(group, 'adjust')
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mock_fin_scaling = self.patchobject(up_policy, '_finished_scaling')
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with mock.patch.object(up_policy, '_is_scaling_allowed',
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return_value=True) as mock_isa:
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self.assertIsNone(up_policy.handle_signal())
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mock_isa.assert_called_once_with()
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mock_fin_scaling.assert_called_once_with('change_in_capacity : 1',
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size_changed=True)
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def test_scaling_policy_cooldown_toosoon(self):
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"""If _is_scaling_allowed() returns False don't progress."""
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t = template_format.parse(as_template)
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stack = utils.parse_stack(t, params=as_params)
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pol = self.create_scaling_policy(t, stack, 'my-policy')
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group = stack['my-group']
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test = {'current': 'alarm'}
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with mock.patch.object(group, 'adjust',
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side_effect=AssertionError) as dont_call:
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with mock.patch.object(pol, '_is_scaling_allowed',
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return_value=False) as mock_cip:
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self.assertRaises(resource.NoActionRequired,
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pol.handle_signal, details=test)
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mock_cip.assert_called_once_with()
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self.assertEqual([], dont_call.call_args_list)
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def test_scaling_policy_cooldown_ok(self):
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t = template_format.parse(as_template)
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stack = utils.parse_stack(t, params=as_params)
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pol = self.create_scaling_policy(t, stack, 'my-policy')
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test = {'current': 'alarm'}
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group = self.patchobject(pol.stack, 'resource_by_refid').return_value
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group.name = 'fluffy'
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with mock.patch.object(pol, '_is_scaling_allowed',
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return_value=True) as mock_isa:
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pol.handle_signal(details=test)
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mock_isa.assert_called_once_with()
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group.adjust.assert_called_once_with(1, 'change_in_capacity', None)
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def test_scaling_policy_refid(self):
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t = template_format.parse(as_template)
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stack = utils.parse_stack(t)
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rsrc = stack['my-policy']
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rsrc.resource_id = 'xyz'
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self.assertEqual('xyz', rsrc.FnGetRefId())
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def test_scaling_policy_refid_convg_cache_data(self):
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t = template_format.parse(as_template)
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cache_data = {'my-policy': {
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'uuid': mock.ANY,
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'id': mock.ANY,
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'action': 'CREATE',
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'status': 'COMPLETE',
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'reference_id': 'convg_xyz'
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}}
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stack = utils.parse_stack(t, cache_data=cache_data)
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rsrc = stack['my-policy']
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self.assertEqual('convg_xyz', rsrc.FnGetRefId())
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class TestCooldownMixin(common.HeatTestCase):
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def create_scaling_policy(self, t, stack, resource_name):
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rsrc = stack[resource_name]
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self.assertIsNone(rsrc.validate())
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scheduler.TaskRunner(rsrc.create)()
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self.assertEqual((rsrc.CREATE, rsrc.COMPLETE), rsrc.state)
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return rsrc
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def test_cooldown_is_in_progress_toosoon(self):
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t = template_format.parse(as_template)
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stack = utils.parse_stack(t, params=as_params)
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pol = self.create_scaling_policy(t, stack, 'my-policy')
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now = timeutils.utcnow()
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previous_meta = {'cooldown': {
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now.isoformat(): 'change_in_capacity : 1'}}
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self.patchobject(pol, 'metadata_get', return_value=previous_meta)
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self.assertFalse(pol._is_scaling_allowed())
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def test_cooldown_is_in_progress_scaling_unfinished(self):
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t = template_format.parse(as_template)
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stack = utils.parse_stack(t, params=as_params)
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pol = self.create_scaling_policy(t, stack, 'my-policy')
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previous_meta = {'scaling_in_progress': True}
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self.patchobject(pol, 'metadata_get', return_value=previous_meta)
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self.assertFalse(pol._is_scaling_allowed())
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def test_cooldown_not_in_progress(self):
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t = template_format.parse(as_template)
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stack = utils.parse_stack(t, params=as_params)
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pol = self.create_scaling_policy(t, stack, 'my-policy')
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awhile_ago = timeutils.utcnow() - datetime.timedelta(seconds=100)
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previous_meta = {
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'cooldown': {
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awhile_ago.isoformat(): 'change_in_capacity : 1'
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},
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'scaling_in_progress': False
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}
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self.patchobject(pol, 'metadata_get', return_value=previous_meta)
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self.assertTrue(pol._is_scaling_allowed())
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def test_scaling_policy_cooldown_zero(self):
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t = template_format.parse(as_template)
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# Create the scaling policy (with cooldown=0) and scale up one
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properties = t['resources']['my-policy']['properties']
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properties['cooldown'] = '0'
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stack = utils.parse_stack(t, params=as_params)
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pol = self.create_scaling_policy(t, stack, 'my-policy')
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now = timeutils.utcnow()
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previous_meta = {'cooldown': {
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now.isoformat(): 'change_in_capacity : 1'}}
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self.patchobject(pol, 'metadata_get', return_value=previous_meta)
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self.assertTrue(pol._is_scaling_allowed())
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def test_scaling_policy_cooldown_none(self):
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t = template_format.parse(as_template)
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# Create the scaling policy no cooldown property, should behave the
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# same as when cooldown==0
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properties = t['resources']['my-policy']['properties']
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del properties['cooldown']
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stack = utils.parse_stack(t, params=as_params)
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pol = self.create_scaling_policy(t, stack, 'my-policy')
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now = timeutils.utcnow()
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previous_meta = {'cooldown': {
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now.isoformat(): 'change_in_capacity : 1'}}
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self.patchobject(pol, 'metadata_get', return_value=previous_meta)
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self.assertTrue(pol._is_scaling_allowed())
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def test_no_cooldown_no_scaling_in_progress(self):
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t = template_format.parse(as_template)
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stack = utils.parse_stack(t, params=as_params)
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pol = self.create_scaling_policy(t, stack, 'my-policy')
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# no cooldown entry in the metadata
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previous_meta = {'scaling_in_progress': False}
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self.patchobject(pol, 'metadata_get', return_value=previous_meta)
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self.assertTrue(pol._is_scaling_allowed())
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def test_metadata_is_written(self):
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t = template_format.parse(as_template)
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stack = utils.parse_stack(t, params=as_params)
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pol = self.create_scaling_policy(t, stack, 'my-policy')
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nowish = timeutils.utcnow()
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reason = 'cool as'
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meta_set = self.patchobject(pol, 'metadata_set')
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self.patchobject(timeutils, 'utcnow', return_value=nowish)
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pol._finished_scaling(reason, size_changed=True)
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meta_set.assert_called_once_with(
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{'cooldown': {nowish.isoformat(): reason},
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'scaling_in_progress': False})
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class ScalingPolicyAttrTest(common.HeatTestCase):
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def setUp(self):
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super(ScalingPolicyAttrTest, self).setUp()
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t = template_format.parse(as_template)
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self.stack = utils.parse_stack(t, params=as_params)
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self.stack_name = self.stack.name
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self.policy = self.stack['my-policy']
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self.assertIsNone(self.policy.validate())
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scheduler.TaskRunner(self.policy.create)()
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self.assertEqual((self.policy.CREATE, self.policy.COMPLETE),
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self.policy.state)
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def test_alarm_attribute(self):
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self.m.StubOutWithMock(self.stack.clients.client_plugin('heat'),
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'get_heat_cfn_url')
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self.stack.clients.client_plugin('heat').get_heat_cfn_url().AndReturn(
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'http://server.test:8000/v1')
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self.m.ReplayAll()
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alarm_url = self.policy.FnGetAtt('alarm_url')
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base = alarm_url.split('?')[0].split('%3A')
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self.assertEqual('http://server.test:8000/v1/signal/arn', base[0])
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self.assertEqual('openstack', base[1])
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self.assertEqual('heat', base[2])
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self.assertEqual('test_tenant_id', base[4])
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res = base[5].split('%2F')
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self.assertEqual('stacks', res[0])
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self.assertEqual(self.stack_name, res[1])
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self.assertEqual('resources', res[3])
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self.assertEqual('my-policy', res[4])
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args = sorted(alarm_url.split('?')[1].split('&'))
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self.assertEqual('AWSAccessKeyId', args[0].split('=')[0])
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self.assertEqual('Signature', args[1].split('=')[0])
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self.assertEqual('SignatureMethod', args[2].split('=')[0])
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self.assertEqual('SignatureVersion', args[3].split('=')[0])
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self.assertEqual('Timestamp', args[4].split('=')[0])
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self.m.VerifyAll()
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def test_signal_attribute(self):
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self.m.StubOutWithMock(self.stack.clients.client_plugin('heat'),
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'get_heat_url')
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self.stack.clients.client_plugin('heat').get_heat_url().AndReturn(
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'http://server.test:8000/v1')
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self.m.ReplayAll()
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self.assertEqual(
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'http://server.test:8000/v1/test_tenant_id/stacks/'
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'%s/%s/resources/my-policy/signal' % (
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self.stack.name, self.stack.id),
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self.policy.FnGetAtt('signal_url'))
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self.m.VerifyAll()
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