How to use describe_stacks method in localstack

Best Python code snippet using localstack_python

deploy.py

Source:deploy.py

...10        '''11        n_calls = 312        client = cfn.Cloudformation()13        describe_stack_events = cfn.make_describe_stack_events(client, n_calls)14        describe_stacks = cfn.make_describe_stacks(client, n_calls, 'CREATE_COMPLETE')15        client.mock('describe_stack_events', describe_stack_events)16        client.mock('describe_stacks', describe_stacks)17        _wait_for_stack(client, 'foo')18        self.assertEqual(client.called['describe_stack_events'], n_calls)19        self.assertEqual(client.called['describe_stacks'], n_calls)20        # we're only testing that this runs to completion21        self.assertEqual(True, True)22    def test_stack_exists(self):23        '''verify a stack exists24        '''25        client = cfn.Cloudformation()26        describe_stacks = cfn.make_describe_stacks(client, 3, 'CREATE_COMPLETE')27        client.mock('describe_stacks', describe_stacks)28        exists = _stack_exists(client, 'foo')29        self.assertEqual(client.called['describe_stacks'], 1)30        self.assertEqual(exists, True)31    def test_stack_not_exists(self):32        '''verify a stack exists33        '''34        client = cfn.Cloudformation()35        describe_stacks = cfn.make_describe_stacks(client, 3, 'CREATE_COMPLETE', 'bar')36        client.mock('describe_stacks', describe_stacks)37        exists = _stack_exists(client, 'foo')38        self.assertEqual(client.called['describe_stacks'], 1)39        self.assertEqual(exists, False)40    def test_make_create_change_set(self):41        '''create a changeset42        '''43        stack_name = 'foo'44        client = cfn.Cloudformation()45        describe_stacks = cfn.make_describe_stacks(client, 3, 'CREATE_COMPLETE', 'bar')46        client.mock('describe_stacks', describe_stacks)47        def create_change_set(StackName, TemplateURL, UsePreviousTemplate, Parameters, Capabilities, ChangeSetName, ChangeSetType):48            self.assertEqual(ChangeSetType, 'CREATE')49            return {50                'Id': 'string',51                'StackId': 'string'52            }53        client.mock('create_change_set', create_change_set)54        _make_change_set(client, stack_name, '', {})55        self.assertEqual(client.called['create_change_set'], 1)56    def test_make_update_change_set(self):57        '''update a stack with changeset58        '''59        stack_name = 'foo'60        client = cfn.Cloudformation()61        describe_stacks = cfn.make_describe_stacks(client, 3, 'CREATE_COMPLETE')62        client.mock('describe_stacks', describe_stacks)63        def create_change_set(StackName, TemplateURL, UsePreviousTemplate, Parameters, Capabilities, ChangeSetName, ChangeSetType):64            self.assertEqual(ChangeSetType, 'UPDATE')65            return {66                'Id': 'string',67                'StackId': 'string'68            }69        client.mock('create_change_set', create_change_set)70        _make_change_set(client, stack_name, '', {})71        self.assertEqual(client.called['create_change_set'], 1)72    def test_wait_for_changeset(self):73        '''pause execution until the changeset creation is complete74        '''75        n_calls = 376        client = cfn.Cloudformation()77        describe_change_set = cfn.make_describe_change_set(client, n_calls, 'CREATE_COMPLETE')78        client.mock('describe_change_set', describe_change_set)79        finished = _wait_for_changeset(client, 'foo', 'bar')80        self.assertEqual(client.called['describe_change_set'], n_calls)81        # we're only testing that this runs to completion82        self.assertEqual(finished, True)83    def test_stack_complete(self):84        '''Check if the stack status is in a complete state85        '''86        client = cfn.Cloudformation()87        describe_stacks = cfn.make_describe_stacks(client, 1, 'CREATE_COMPLETE', 'foo')88        client.mock('describe_stacks', describe_stacks)89        stack_status = _stack_complete(client, 'foo')90        self.assertEqual(client.called['describe_stacks'], 1)91        self.assertEqual(stack_status['complete'], True)92        client = cfn.Cloudformation()93        describe_stacks = cfn.make_describe_stacks(client, 1, 'UPDATE_ROLLBACK_FAILED')94        client.mock('describe_stacks', describe_stacks)95        stack_status = _stack_complete(client, 'foo')96        self.assertEqual(client.called['describe_stacks'], 1)97        self.assertEqual(stack_status['complete'], True)98    def test_execute_changeset(self):99        '''Check that execute changeset gets called100        '''101        client = cfn.Cloudformation()102        def execute_change_set(ChangeSetName, StackName):103            return {}104        client.mock('execute_change_set', execute_change_set)105        _execute_changeset(client, 'foo', 'bar')106        self.assertEqual(client.called['execute_change_set'], 1)107    def test_get_parameters(self):...

cloudformation.py

Source:cloudformation.py

...44def get_template(stack_name):45    result = _make_api_call('get_template',46                            StackName=stack_name)47    return result48def describe_stacks(stack_name=None):49    kwargs = dict()50    if stack_name:51        kwargs['StackName'] = stack_name52    response = _make_api_call('describe_stacks', **kwargs)53    next_token = response.get('NextToken')54    all_stacks = response['Stacks']55    while next_token:56        utils.sleep(sleep_time=0.5)57        response = _make_api_call('describe_stacks')58        all_stacks.extend(response['Stacks'])59        next_token = response.get('NextToken')60    return all_stacks61def stack_names():62    all_stacks = describe_stacks()63    return [stack['StackName'] for stack in all_stacks]64def wait_until_stack_exists(stack_name, timeout=120):65    """66    Given a template name, wait until stack is successfully created67    or 'timeout' seconds have elapsed.68    :param stack_name: name of the CloudFormation stack whose creation is pending69    :param timeout: number of seconds after which to stop polling 'DescribeStacks'70    :return:71    """72    LOG.debug('Inside describe_stacks api wrapper')73    stack_exists = False74    start_time = datetime.now()75    while not stack_exists:76        if (datetime.now() - start_time) > timedelta(timeout):77            raise CFNTemplateNotFound(78                "Could not find CFN stack, '{stack_name}'.".format(stack_name=stack_name)79            )80        all_stacks = describe_stacks()81        if [stack for stack in all_stacks if stack['StackName'] == stack_name]:82            stack_exists = True83        else:84            utils.sleep()85class CFNTemplateNotFound(EBCLIException):86    """87    Exception class to raise when a CFN stack is not found...

test_server_manager.py

Source:test_server_manager.py

1import warnings2from unittest.mock import patch3with warnings.catch_warnings():4    warnings.filterwarnings("ignore", category=SyntaxWarning)5    import boto36from botocore.stub import Stubber7from pytest import fixture8from discord_notifier.lib.server_manager import ServerManager9from discord_notifier.tstlib.test_mock_objects import newDescribeStacks10@fixture(params=["Running", "Stopped"])11def state(request):12    return request.param13@fixture14def cfn_client():15    cfn = boto3.client("cloudformation", region_name="us-west-2")16    stubber = Stubber(cfn)17    stubber.activate()18    with patch("boto3.client") as mock_boto3:19        mock_boto3.return_value = cfn20        yield stubber21        stubber.assert_no_pending_responses()22def set_describe_stacks_value(cfn, describe_stacks):23    expected_params = {"StackName": "StackName"}24    stack_state = describe_stacks.output25    cfn.add_response("describe_stacks", stack_state, expected_params)26def test_stop_server_started(cfn_client):27    describe_stacks = newDescribeStacks(server_state="Running")28    set_describe_stacks_value(cfn_client, describe_stacks)29    expected_params = {30        "StackName": describe_stacks.stack_name,31        "UsePreviousTemplate": True,32        "Capabilities": ["CAPABILITY_IAM"],33        "Parameters": newDescribeStacks(server_state="Stopped").parameters,34    }35    cfn_client.add_response("update_stack", {"StackId": "minecraft"}, expected_params)36    ServerManager("StackName").stop_server()37def test_stop_server_stopped(cfn_client):38    describe_stacks = newDescribeStacks(server_state="Stopped")39    set_describe_stacks_value(cfn_client, describe_stacks)40    expected_params = {41        "StackName": describe_stacks.stack_name,42        "UsePreviousTemplate": True,43        "Capabilities": ["CAPABILITY_IAM"],44        "Parameters": newDescribeStacks(server_state="Stopped").parameters,45    }46    cfn_client.add_client_error(47        "update_stack",48        service_error_code="ValidationError",49        service_message="No updates are to be performed.",50        expected_params=expected_params,51    )...

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