How to use delete_change_set method in localstack

Best Python code snippet using localstack_python

main.py

Source:main.py

...103                error,104            )105            raise Exception(error)106        return "change_set_create_complete"107    def delete_change_set(self):108        client.delete_change_set(**self.parameters)109    def execute_change_set(self):110        try:111            client.execute_change_set(**self.parameters)112        except client.exceptions.ChangeSetNotFoundException as error:113            logger.error(114                "Change set %s was not found", self.parameters["ChangeSetName"]115            )116            raise Exception(error)117        return "stack_update_complete"118    def wait(self, waiter_name):119        logger.info("waiting for operation %s to complete", waiter_name)120        waiter = client.get_waiter(waiter_name)121        try:122            # TODO: Fix this, it should use the paremeters provided by the build_cloudformation_parameters123            parameters = {"StackName": self.stack_name}124            if "change_set" in waiter_name:125                parameters["ChangeSetName"] = f"{self.stack_name}-{self.commit}"126            waiter.wait(**parameters)127            logger.info(f"operation {operation} finished!")128        except botocore.exceptions.WaiterError as error:129            logger.error(130                "An error happened waiting for the operation %s, %s", operation, error131            )132            raise Exception(error)133    def generate_parameters(self):134        logger.info("generating parameters")135        for file in os.listdir(self.stack_parameters_path):136            if self.environment in file:137                parameters_file = os.path.join(self.stack_parameters_path, file)138                if "enc" in file:139                    subprocess.run(140                        [141                            "sops",142                            "-d",143                            parameters_file,144                            ">",145                            self.stack_tmp_parameters_file,146                        ],147                        stdout=subprocess.DEVNULL,148                    )149                else:150                    logger.debug("copying file")151                    shutil.copyfile(parameters_file, self.stack_tmp_parameters_file)152                break153    def clean(self):154        logger.info("Cleaning up the parameters")155        subprocess.run(["rm", self.stack_tmp_parameters_file])156# TODO: Support decrypt of the parameters file157# def generate_parameters(parameters_path):158def usage(info, err):159    help = """160main script helps with the creation of CloudFormation stacks.161Usage:162python main stack-name <command>163Commands to work with Stacks:164create              - Creates a new stack based on the environment and the stack name165update              - Updates an already created stack166delete              - Deletes an already created stack167Commands to work with Change Sets:168create_change_set   - Creates a new change set using the stack name and the commit's SHA as change set name169execute_change_set  - Executes the current change set170delete_change_set   - Delete the current change set171The stack-name is the name of the stack's folder inside stacks/172E.g.173python main network create174    """175    print(info)176    print(help)177    sys.exit(err)178def args_validator():179    if len(sys.argv) != 3:180        usage("Invalid number of arguments", errno.EINVAL)181    if sys.argv[2] not in OPERATIONS:182        usage(f"{sys.argv[2]} is not permitted", errno.EPERM)183    stack_path = os.path.join("stacks", sys.argv[1])184    if not os.path.exists(stack_path):185        usage(f"{stack_path} does not exist", errno.EPERM)186    try:187        os.environ["PROJECT"]188        os.environt["ENVIRONMENT"]189    except:190        logger.warning(191            "PROJECT or ENVIRONMENT are not set, falling back to default values"192        )193# Run validation before creating194args_validator()195operation = sys.argv[2]196stack = Stack(sys.argv[1], sys.argv[2])197stack.validate_cloudformation_template()198try:199    if operation == "create":200        waiter_name = stack.create_stack()201    elif operation == "delete":202        waiter_name = stack.delete_stack()203    elif operation == "update":204        waiter_name = stack.update_stack()205    elif operation == "create_change_set":206        waiter_name = stack.create_change_set()207    elif operation == "delete_change_set":208        waiter_name = stack.delete_change_set()209        sys.exit(0)210    elif operation == "execute_change_set":211        waiter_name = stack.execute_change_set()212    else:213        usage(1)214    stack.wait(waiter_name)215except Exception as error:216    logger.error(error)217finally:...

cloudformation.py

Source:cloudformation.py

...131        logger.info(132            "Template and parameters haven't changed. "133            "Cleaning up change set."134        )135        delete_change_set(client, change_set_name, kwargs['StackName'])136        logger.info("Stack hasn't changed")137        return False, change_set_name, change_set138    logger.info("Stack has changed")139    return True, change_set_name, change_set140def delete_change_set(client, change_set_name, stack_name):141    """142    Deletes the cloudformation change set.143    Args:144        client: Boto3 client.145        change_set_name: Name of the change set.146        stack_name: Name of the stack.147    """148    client.delete_change_set(149        ChangeSetName=change_set_name,150        StackName=stack_name151    )152def execute_change_set(client, change_set_name, stack_name):153    """154    Deletes the cloudformation change set.155    Args:156        client: Boto3 client.157        change_set_name: Name of the change set.158        stack_name: Name of the stack.159    """160    client.execute_change_set(161        ChangeSetName=change_set_name,162        StackName=stack_name...

deploy.py

Source:deploy.py

...29            self.execute_change_set()30        except ClientError as e:31            if e.response['Error']['Code'] == 'ValidationError':32                print "Removing any previously created change sets with the same name"33                self.delete_change_set()                34                print "Create UPDATE change set {}".format(self.change_set_name)35                change_set = self.client.create_change_set(36                        StackName=self.stackname,37                        TemplateBody=self.cfn_string,38                        Parameters=[39                            {40                                'ParameterKey' : 'dbTableName',41                                'ParameterValue' : self.table_name42                            }43                        ],44                        ChangeSetName=self.change_set_name,45                        ChangeSetType='UPDATE'46                        )47                self.wait()48                print type(self.get_change_status())49                if self.get_change_status() is not 'True':50                    raise Exception("Change Set Cannot be excuted as the table would be replaced")51                else:52                    self.execute_change_set()53            else:54                print "Unexpected error: {}".format(e)55    def wait(self):56        print "Waiting for change set create complete"57        waiter = self.client.get_waiter('change_set_create_complete')58        try:59            waiter.wait(60                ChangeSetName=self.change_set_name,61                StackName=self.stackname,62                WaiterConfig={63                    'Delay': 30,64                    'MaxAttempts' : 12065                }66            )67            print "Change Set Complete"68        except WaiterError:69            raise Exception("Your Change Set Does not Contain Any Changes")70            71    def delete_change_set(self):72        self.client.delete_change_set(73            ChangeSetName=self.change_set_name,74            StackName=self.stackname75        )76            77    def get_change_status(self):78        describe_response = self.client.describe_change_set(79            ChangeSetName=self.change_set_name,80            StackName=self.stackname81        )82        # Boolean value for the modify action if replacement is true than the resource is deleted and recreated83        #print describe_response["Changes"][0]["ResourceChange"]["Replacement"]84        return describe_response["Changes"][0]["ResourceChange"]["Replacement"]85    def execute_change_set(self):86        print "Executing change set {} on stack {}".format(self.change_set_name, self.stackname)...

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