# # 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 os.path import sys import fixtures import mock from oslo.config import cfg import six from heat.common import environment_format from heat.engine import environment from heat.engine import resources from heat.tests import common from heat.tests import generic_resource cfg.CONF.import_opt('environment_dir', 'heat.common.config') class EnvironmentTest(common.HeatTestCase): def setUp(self): super(EnvironmentTest, self).setUp() self.g_env = resources.global_env() def test_load_old_parameters(self): old = {u'a': u'ff', u'b': u'ss'} expected = {u'parameters': old, u'resource_registry': {u'resources': {}}} env = environment.Environment(old) self.assertEqual(expected, env.user_env_as_dict()) def test_load_new_env(self): new_env = {u'parameters': {u'a': u'ff', u'b': u'ss'}, u'resource_registry': {u'OS::Food': u'fruity.yaml', u'resources': {}}} env = environment.Environment(new_env) self.assertEqual(new_env, env.user_env_as_dict()) def test_existing_parameters(self): # This tests reusing the existing parameters as is prev_params = {'foo': 'bar', 'tester': 'Yes'} params = {} expected = {'parameters': prev_params, 'resource_registry': {'resources': {}}} prev_env = environment.Environment( {'parameters': prev_params, 'resource_registry': {'resources': {}}}) env = environment.Environment(params) env.patch_previous_parameters(prev_env) self.assertEqual(expected, env.user_env_as_dict()) def test_patch_existing_parameters(self): # This tests patching cli parameters over the existing parameters prev_params = {'foo': 'bar', 'tester': 'Yes'} params = {'tester': 'patched'} expected = {'parameters': {'foo': 'bar', 'tester': 'patched'}, 'resource_registry': {'resources': {}}} prev_env = environment.Environment( {'parameters': prev_params, 'resource_registry': {'resources': {}}}) env = environment.Environment(params) env.patch_previous_parameters(prev_env) self.assertEqual(expected, env.user_env_as_dict()) def test_patch_and_clear_existing_parameters(self): # This tests patching cli parameters over the existing parameters prev_params = {'foo': 'bar', 'tester': 'Yes', 'another_tester': 'Yes'} params = {'tester': 'patched'} expected = {'parameters': {'foo': 'bar', 'tester': 'patched'}, 'resource_registry': {'resources': {}}} prev_env = environment.Environment( {'parameters': prev_params, 'resource_registry': {'resources': {}}}) env = environment.Environment(params) env.patch_previous_parameters(prev_env, ['another_tester']) self.assertEqual(expected, env.user_env_as_dict()) def test_clear_existing_parameters(self): # This tests removing some parameters in the existing set of parameters prev_params = {'foo': 'bar', 'tester': 'Yes'} params = {} expected = {'parameters': {'foo': 'bar'}, 'resource_registry': {'resources': {}}} prev_env = environment.Environment( {'parameters': prev_params, 'resource_registry': {'resources': {}}}) env = environment.Environment(params) env.patch_previous_parameters(prev_env, ['tester']) self.assertEqual(expected, env.user_env_as_dict()) def test_global_registry(self): self.g_env.register_class('CloudX::Nova::Server', generic_resource.GenericResource) new_env = {u'parameters': {u'a': u'ff', u'b': u'ss'}, u'resource_registry': {u'OS::*': 'CloudX::*'}} env = environment.Environment(new_env) self.assertEqual('CloudX::Nova::Server', env.get_resource_info('OS::Nova::Server', 'my_db_server').name) def test_map_one_resource_type(self): new_env = {u'parameters': {u'a': u'ff', u'b': u'ss'}, u'resource_registry': {u'resources': {u'my_db_server': {u'OS::DBInstance': 'db.yaml'}}}} env = environment.Environment(new_env) info = env.get_resource_info('OS::DBInstance', 'my_db_server') self.assertEqual('db.yaml', info.value) def test_map_all_resources_of_type(self): self.g_env.register_class('OS::Nova::FloatingIP', generic_resource.GenericResource) new_env = {u'parameters': {u'a': u'ff', u'b': u'ss'}, u'resource_registry': {u'OS::Networking::FloatingIP': 'OS::Nova::FloatingIP', u'OS::Loadbalancer': 'lb.yaml'}} env = environment.Environment(new_env) self.assertEqual('OS::Nova::FloatingIP', env.get_resource_info('OS::Networking::FloatingIP', 'my_fip').name) def test_resource_sort_order_len(self): new_env = {u'resource_registry': {u'resources': {u'my_fip': { u'OS::Networking::FloatingIP': 'ip.yaml'}}}, u'OS::Networking::FloatingIP': 'OS::Nova::FloatingIP'} env = environment.Environment(new_env) self.assertEqual('ip.yaml', env.get_resource_info('OS::Networking::FloatingIP', 'my_fip').value) def test_env_load(self): new_env = {u'resource_registry': {u'resources': {u'my_fip': { u'OS::Networking::FloatingIP': 'ip.yaml'}}}} env = environment.Environment() self.assertIsNone(env.get_resource_info('OS::Networking::FloatingIP', 'my_fip')) env.load(new_env) self.assertEqual('ip.yaml', env.get_resource_info('OS::Networking::FloatingIP', 'my_fip').value) def test_constraints(self): env = environment.Environment({}) first_constraint = object() second_constraint = object() env.register_constraint("constraint1", first_constraint) env.register_constraint("constraint2", second_constraint) self.assertIs(first_constraint, env.get_constraint("constraint1")) self.assertIs(second_constraint, env.get_constraint("constraint2")) self.assertIs(None, env.get_constraint("no_constraint")) def test_constraints_registry(self): constraint_content = ''' class MyConstraint(object): pass def constraint_mapping(): return {"constraint1": MyConstraint} ''' plugin_dir = self.useFixture(fixtures.TempDir()) plugin_file = os.path.join(plugin_dir.path, 'test.py') with open(plugin_file, 'w+') as ef: ef.write(constraint_content) self.addCleanup(sys.modules.pop, "heat.engine.plugins.test") cfg.CONF.set_override('plugin_dirs', plugin_dir.path) env = environment.Environment({}) resources._load_global_environment(env) self.assertEqual("MyConstraint", env.get_constraint("constraint1").__name__) self.assertIs(None, env.get_constraint("no_constraint")) def test_constraints_registry_error(self): constraint_content = ''' def constraint_mapping(): raise ValueError("oops") ''' plugin_dir = self.useFixture(fixtures.TempDir()) plugin_file = os.path.join(plugin_dir.path, 'test.py') with open(plugin_file, 'w+') as ef: ef.write(constraint_content) self.addCleanup(sys.modules.pop, "heat.engine.plugins.test") cfg.CONF.set_override('plugin_dirs', plugin_dir.path) env = environment.Environment({}) error = self.assertRaises(ValueError, resources._load_global_environment, env) self.assertEqual("oops", six.text_type(error)) def test_constraints_registry_stevedore(self): env = environment.Environment({}) resources._load_global_environment(env) self.assertEqual("FlavorConstraint", env.get_constraint("nova.flavor").__name__) self.assertIs(None, env.get_constraint("no_constraint")) class EnvironmentDuplicateTest(common.HeatTestCase): scenarios = [ ('same', dict(resource_type='test.yaml', expected_equal=True)), ('diff_temp', dict(resource_type='not.yaml', expected_equal=False)), ('diff_map', dict(resource_type='OS::SomethingElse', expected_equal=False)), ('diff_path', dict(resource_type='a/test.yaml', expected_equal=False)), ] def test_env_load(self): env_initial = {u'resource_registry': { u'OS::Test::Dummy': 'test.yaml'}} env = environment.Environment() env.load(env_initial) info = env.get_resource_info('OS::Test::Dummy', 'something') replace_log = 'Changing %s from %s to %s' % ('OS::Test::Dummy', 'test.yaml', self.resource_type) self.assertNotIn(replace_log, self.LOG.output) env_test = {u'resource_registry': { u'OS::Test::Dummy': self.resource_type}} env.load(env_test) if self.expected_equal: # should return exactly the same object. self.assertIs(info, env.get_resource_info('OS::Test::Dummy', 'my_fip')) self.assertNotIn(replace_log, self.LOG.output) else: self.assertIn(replace_log, self.LOG.output) self.assertNotEqual(info, env.get_resource_info('OS::Test::Dummy', 'my_fip')) class GlobalEnvLoadingTest(common.HeatTestCase): def test_happy_path(self): with mock.patch('glob.glob') as m_ldir: m_ldir.return_value = ['/etc_etc/heat/environment.d/a.yaml'] env_dir = '/etc_etc/heat/environment.d' env_content = '{"resource_registry": {}}' env = environment.Environment({}, user_env=False) with mock.patch('heat.engine.environment.open', mock.mock_open(read_data=env_content), create=True) as m_open: environment.read_global_environment(env, env_dir) m_ldir.assert_called_once_with(env_dir + '/*') m_open.assert_called_once_with('%s/a.yaml' % env_dir) def test_empty_env_dir(self): with mock.patch('glob.glob') as m_ldir: m_ldir.return_value = [] env_dir = '/etc_etc/heat/environment.d' env = environment.Environment({}, user_env=False) environment.read_global_environment(env, env_dir) m_ldir.assert_called_once_with(env_dir + '/*') def test_continue_on_ioerror(self): """assert we get all files processed even if there are processing exceptions. """ with mock.patch('glob.glob') as m_ldir: m_ldir.return_value = ['/etc_etc/heat/environment.d/a.yaml', '/etc_etc/heat/environment.d/b.yaml'] env_dir = '/etc_etc/heat/environment.d' env_content = '{}' env = environment.Environment({}, user_env=False) with mock.patch('heat.engine.environment.open', mock.mock_open(read_data=env_content), create=True) as m_open: m_open.side_effect = IOError environment.read_global_environment(env, env_dir) m_ldir.assert_called_once_with(env_dir + '/*') expected = [mock.call('%s/a.yaml' % env_dir), mock.call('%s/b.yaml' % env_dir)] self.assertEqual(expected, m_open.call_args_list) def test_continue_on_parse_error(self): """assert we get all files processed even if there are processing exceptions. """ with mock.patch('glob.glob') as m_ldir: m_ldir.return_value = ['/etc_etc/heat/environment.d/a.yaml', '/etc_etc/heat/environment.d/b.yaml'] env_dir = '/etc_etc/heat/environment.d' env_content = '{@$%#$%' env = environment.Environment({}, user_env=False) with mock.patch('heat.engine.environment.open', mock.mock_open(read_data=env_content), create=True) as m_open: environment.read_global_environment(env, env_dir) m_ldir.assert_called_once_with(env_dir + '/*') expected = [mock.call('%s/a.yaml' % env_dir), mock.call('%s/b.yaml' % env_dir)] self.assertEqual(expected, m_open.call_args_list) def test_env_resources_override_plugins(self): # assertion: any template resources in the global environment # should override the default plugins. # 1. set our own global test env # (with a template resource that shadows a plugin) g_env_content = ''' resource_registry: "OS::Nova::Server": "file:///not_really_here.yaml" ''' envdir = self.useFixture(fixtures.TempDir()) # envfile = os.path.join(envdir.path, 'test.yaml') with open(envfile, 'w+') as ef: ef.write(g_env_content) cfg.CONF.set_override('environment_dir', envdir.path) # 2. load global env g_env = environment.Environment({}, user_env=False) resources._load_global_environment(g_env) # 3. assert our resource is in place. self.assertEqual('file:///not_really_here.yaml', g_env.get_resource_info('OS::Nova::Server').value) def test_env_one_resource_disable(self): # prove we can disable a resource in the global environment g_env_content = ''' resource_registry: "OS::Nova::Server": ''' # 1. fake an environment file envdir = self.useFixture(fixtures.TempDir()) envfile = os.path.join(envdir.path, 'test.yaml') with open(envfile, 'w+') as ef: ef.write(g_env_content) cfg.CONF.set_override('environment_dir', envdir.path) # 2. load global env g_env = environment.Environment({}, user_env=False) resources._load_global_environment(g_env) # 3. assert our resource is in now gone. self.assertIsNone(g_env.get_resource_info('OS::Nova::Server')) # 4. make sure we haven't removed something we shouldn't have self.assertEqual(resources.instance.Instance, g_env.get_resource_info('AWS::EC2::Instance').value) def test_env_multi_resources_disable(self): # prove we can disable resources in the global environment g_env_content = ''' resource_registry: "AWS::*": ''' # 1. fake an environment file envdir = self.useFixture(fixtures.TempDir()) envfile = os.path.join(envdir.path, 'test.yaml') with open(envfile, 'w+') as ef: ef.write(g_env_content) cfg.CONF.set_override('environment_dir', envdir.path) # 2. load global env g_env = environment.Environment({}, user_env=False) resources._load_global_environment(g_env) # 3. assert our resources are now gone. self.assertIsNone(g_env.get_resource_info('AWS::EC2::Instance')) # 4. make sure we haven't removed something we shouldn't have self.assertEqual(resources.server.Server, g_env.get_resource_info('OS::Nova::Server').value) def test_env_user_cant_disable_sys_resource(self): # prove a user can't disable global resources from the user environment u_env_content = ''' resource_registry: "AWS::*": ''' # 1. load user env u_env = environment.Environment() u_env.load(environment_format.parse(u_env_content)) # 2. assert global resources are NOT gone. self.assertEqual( resources.instance.Instance, u_env.get_resource_info('AWS::EC2::Instance').value) def test_env_ignore_files_starting_dot(self): # prove we can disable a resource in the global environment g_env_content = '' # 1. fake an environment file envdir = self.useFixture(fixtures.TempDir()) with open(os.path.join(envdir.path, 'a.yaml'), 'w+') as ef: ef.write(g_env_content) with open(os.path.join(envdir.path, '.test.yaml'), 'w+') as ef: ef.write(g_env_content) with open(os.path.join(envdir.path, 'b.yaml'), 'w+') as ef: ef.write(g_env_content) cfg.CONF.set_override('environment_dir', envdir.path) # 2. load global env g_env = environment.Environment({}, user_env=False) with mock.patch('heat.engine.environment.open', mock.mock_open(read_data=g_env_content), create=True) as m_open: resources._load_global_environment(g_env) # 3. assert that the file were ignored expected = [mock.call('%s/a.yaml' % envdir.path), mock.call('%s/b.yaml' % envdir.path)] call_list = m_open.call_args_list expected.sort() call_list.sort() self.assertEqual(expected, call_list)