203b8e8ecf
This will allow Resources to hold weak references to Stacks (so as to avoid circular references) without causing the Stack object to be prematurely deleted. Change-Id: Ia76da7bc51042fb3598ef2a660d6fbf78137a37b Related-Bug: #1454873
367 lines
12 KiB
Python
367 lines
12 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 mock
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from oslo_config import cfg
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from requests import exceptions
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import six
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import yaml
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from heat.common import exception
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from heat.common import identifier
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from heat.common import template_format
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from heat.common import urlfetch
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from heat.engine import resource
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from heat.engine.resources.aws.cfn import stack as stack_res
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from heat.engine import rsrc_defn
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from heat.engine import stack as parser
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from heat.engine import template
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from heat.objects import resource_data as resource_data_object
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from heat.tests import common
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from heat.tests import generic_resource as generic_rsrc
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from heat.tests import utils
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class NestedStackTest(common.HeatTestCase):
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test_template = '''
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HeatTemplateFormatVersion: '2012-12-12'
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Resources:
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the_nested:
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Type: AWS::CloudFormation::Stack
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Properties:
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TemplateURL: https://server.test/the.template
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Parameters:
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KeyName: foo
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'''
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nested_template = '''
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HeatTemplateFormatVersion: '2012-12-12'
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Parameters:
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KeyName:
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Type: String
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Outputs:
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Foo:
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Value: bar
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'''
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update_template = '''
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HeatTemplateFormatVersion: '2012-12-12'
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Parameters:
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KeyName:
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Type: String
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Outputs:
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Bar:
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Value: foo
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'''
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def setUp(self):
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super(NestedStackTest, self).setUp()
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self.patchobject(urlfetch, 'get')
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def validate_stack(self, template):
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t = template_format.parse(template)
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stack = self.parse_stack(t)
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res = stack.validate()
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self.assertIsNone(res)
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return stack
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def parse_stack(self, t, data=None):
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ctx = utils.dummy_context('test_username', 'aaaa', 'password')
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stack_name = 'test_stack'
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tmpl = template.Template(t)
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stack = parser.Stack(ctx, stack_name, tmpl, adopt_stack_data=data)
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stack.store()
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return stack
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def test_nested_stack_three_deep(self):
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root_template = '''
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HeatTemplateFormatVersion: 2012-12-12
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Resources:
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Nested:
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Type: AWS::CloudFormation::Stack
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Properties:
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TemplateURL: 'https://server.test/depth1.template'
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'''
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depth1_template = '''
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HeatTemplateFormatVersion: 2012-12-12
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Resources:
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Nested:
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Type: AWS::CloudFormation::Stack
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Properties:
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TemplateURL: 'https://server.test/depth2.template'
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'''
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depth2_template = '''
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HeatTemplateFormatVersion: 2012-12-12
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Resources:
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Nested:
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Type: AWS::CloudFormation::Stack
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Properties:
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TemplateURL: 'https://server.test/depth3.template'
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Parameters:
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KeyName: foo
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'''
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urlfetch.get.side_effect = [
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depth1_template,
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depth2_template,
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self.nested_template]
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self.validate_stack(root_template)
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calls = [mock.call('https://server.test/depth1.template'),
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mock.call('https://server.test/depth2.template'),
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mock.call('https://server.test/depth3.template')]
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urlfetch.get.assert_has_calls(calls)
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def test_nested_stack_six_deep(self):
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tmpl = '''
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HeatTemplateFormatVersion: 2012-12-12
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Resources:
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Nested:
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Type: AWS::CloudFormation::Stack
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Properties:
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TemplateURL: 'https://server.test/depth%i.template'
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'''
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root_template = tmpl % 1
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depth1_template = tmpl % 2
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depth2_template = tmpl % 3
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depth3_template = tmpl % 4
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depth4_template = tmpl % 5
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depth5_template = tmpl % 6
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depth5_template += '''
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Parameters:
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KeyName: foo
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'''
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urlfetch.get.side_effect = [
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depth1_template,
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depth2_template,
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depth3_template,
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depth4_template,
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depth5_template,
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self.nested_template]
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t = template_format.parse(root_template)
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stack = self.parse_stack(t)
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res = self.assertRaises(exception.StackValidationFailed,
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stack.validate)
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self.assertIn('Recursion depth exceeds', six.text_type(res))
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calls = [mock.call('https://server.test/depth1.template'),
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mock.call('https://server.test/depth2.template'),
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mock.call('https://server.test/depth3.template'),
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mock.call('https://server.test/depth4.template'),
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mock.call('https://server.test/depth5.template'),
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mock.call('https://server.test/depth6.template')]
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urlfetch.get.assert_has_calls(calls)
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def test_nested_stack_four_wide(self):
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root_template = '''
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HeatTemplateFormatVersion: 2012-12-12
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Resources:
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Nested:
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Type: AWS::CloudFormation::Stack
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Properties:
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TemplateURL: 'https://server.test/depth1.template'
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Parameters:
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KeyName: foo
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Nested2:
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Type: AWS::CloudFormation::Stack
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Properties:
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TemplateURL: 'https://server.test/depth2.template'
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Parameters:
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KeyName: foo
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Nested3:
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Type: AWS::CloudFormation::Stack
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Properties:
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TemplateURL: 'https://server.test/depth3.template'
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Parameters:
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KeyName: foo
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Nested4:
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Type: AWS::CloudFormation::Stack
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Properties:
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TemplateURL: 'https://server.test/depth4.template'
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Parameters:
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KeyName: foo
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'''
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urlfetch.get.return_value = self.nested_template
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self.validate_stack(root_template)
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calls = [mock.call('https://server.test/depth1.template'),
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mock.call('https://server.test/depth2.template'),
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mock.call('https://server.test/depth3.template'),
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mock.call('https://server.test/depth4.template')]
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urlfetch.get.assert_has_calls(calls, any_order=True)
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def test_nested_stack_infinite_recursion(self):
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tmpl = '''
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HeatTemplateFormatVersion: 2012-12-12
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Resources:
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Nested:
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Type: AWS::CloudFormation::Stack
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Properties:
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TemplateURL: 'https://server.test/the.template'
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'''
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urlfetch.get.return_value = tmpl
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t = template_format.parse(tmpl)
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stack = self.parse_stack(t)
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res = self.assertRaises(exception.StackValidationFailed,
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stack.validate)
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self.assertIn('Recursion depth exceeds', six.text_type(res))
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expected_count = cfg.CONF.get('max_nested_stack_depth') + 1
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self.assertEqual(expected_count, urlfetch.get.call_count)
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def test_child_params(self):
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t = template_format.parse(self.test_template)
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stack = self.parse_stack(t)
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nested_stack = stack['the_nested']
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nested_stack.properties.data[nested_stack.PARAMETERS] = {'foo': 'bar'}
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self.assertEqual({'foo': 'bar'}, nested_stack.child_params())
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def test_child_template_when_file_is_fetched(self):
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urlfetch.get.return_value = 'template_file'
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t = template_format.parse(self.test_template)
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stack = self.parse_stack(t)
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nested_stack = stack['the_nested']
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with mock.patch('heat.common.template_format.parse') as mock_parse:
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mock_parse.return_value = 'child_template'
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self.assertEqual('child_template', nested_stack.child_template())
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mock_parse.assert_called_once_with('template_file')
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def test_child_template_when_fetching_file_fails(self):
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urlfetch.get.side_effect = exceptions.RequestException()
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t = template_format.parse(self.test_template)
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stack = self.parse_stack(t)
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nested_stack = stack['the_nested']
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self.assertRaises(ValueError, nested_stack.child_template)
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def test_child_template_when_io_error(self):
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msg = 'Failed to retrieve template'
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urlfetch.get.side_effect = urlfetch.URLFetchError(msg)
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t = template_format.parse(self.test_template)
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stack = self.parse_stack(t)
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nested_stack = stack['the_nested']
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self.assertRaises(ValueError, nested_stack.child_template)
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class ResDataResource(generic_rsrc.GenericResource):
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def handle_create(self):
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self.data_set("test", 'A secret value', True)
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class ResDataStackTest(common.HeatTestCase):
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tmpl = '''
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HeatTemplateFormatVersion: "2012-12-12"
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Parameters:
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KeyName:
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Type: String
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Resources:
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res:
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Type: "res.data.resource"
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Outputs:
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Foo:
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Value: bar
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'''
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def setUp(self):
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super(ResDataStackTest, self).setUp()
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resource._register_class("res.data.resource", ResDataResource)
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def create_stack(self, template):
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t = template_format.parse(template)
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stack = utils.parse_stack(t)
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stack.create()
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self.assertEqual((stack.CREATE, stack.COMPLETE), stack.state)
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return stack
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def test_res_data_delete(self):
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stack = self.create_stack(self.tmpl)
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res = stack['res']
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stack.delete()
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self.assertEqual((stack.DELETE, stack.COMPLETE), stack.state)
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self.assertRaises(
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exception.NotFound,
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resource_data_object.ResourceData.get_val, res, 'test')
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class NestedStackCrudTest(common.HeatTestCase):
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nested_template = '''
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HeatTemplateFormatVersion: '2012-12-12'
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Parameters:
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KeyName:
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Type: String
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Outputs:
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Foo:
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Value: bar
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'''
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def setUp(self):
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super(NestedStackCrudTest, self).setUp()
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self.ctx = utils.dummy_context('test_username', 'aaaa', 'password')
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empty_template = {"HeatTemplateFormatVersion": "2012-12-12"}
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self.stack = parser.Stack(self.ctx, 'test',
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template.Template(empty_template))
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self.stack.store()
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self.patchobject(urlfetch, 'get', return_value=self.nested_template)
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self.nested_parsed = yaml.load(self.nested_template)
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self.nested_params = {"KeyName": "foo"}
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self.defn = rsrc_defn.ResourceDefinition(
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'test_t_res',
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'AWS::CloudFormation::Stack',
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{"TemplateURL": "https://server.test/the.template",
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"Parameters": self.nested_params})
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self.res = stack_res.NestedStack('test_t_res',
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self.defn, self.stack)
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self.assertIsNone(self.res.validate())
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self.res._store()
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def test_handle_create(self):
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self.res.create_with_template = mock.Mock(return_value=None)
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self.res.handle_create()
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self.res.create_with_template.assert_called_once_with(
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self.nested_parsed, self.nested_params, None, adopt_data=None)
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def test_handle_adopt(self):
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self.res.create_with_template = mock.Mock(return_value=None)
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self.res.handle_adopt(resource_data={'resource_id': 'fred'})
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self.res.create_with_template.assert_called_once_with(
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self.nested_parsed, self.nested_params, None,
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adopt_data={'resource_id': 'fred'})
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def test_handle_update(self):
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self.res.update_with_template = mock.Mock(return_value=None)
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self.res.handle_update(self.defn, None, None)
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self.res.update_with_template.assert_called_once_with(
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self.nested_parsed, self.nested_params, None)
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def test_handle_delete(self):
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self.res.rpc_client = mock.MagicMock()
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self.res.action = self.res.CREATE
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stack_identity = identifier.HeatIdentifier(
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self.ctx.tenant_id,
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self.res.physical_resource_name(),
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self.res.resource_id)
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self.res.handle_delete()
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self.res.rpc_client.return_value.delete_stack.assert_called_once_with(
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self.ctx, stack_identity)
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