def find_solution_stack_from_string()

in ebcli/operations/solution_stack_ops.py [0:0]

• 34 lines of code
• 14 McCabe index (conditional complexity)

def find_solution_stack_from_string(solution_string, find_newer=False):
    """
    Method returns a SolutionStack object representing the given `solution_string`.

    If the `solution_string` matches ARNs and complete names of solution stacks, the exact
    match is returned. In the event when there are multiple matches, the latest version is
    returned.

    :param solution_string: A string in one of the following (case-insensitive) forms:
        - PlatformArn:
            - EB-managed: 'arn:aws:elasticbeanstalk:us-west-2::platform/Multi-container
                            Docker running on 64bit Amazon Linux/2.8.0'
            - Custom: arn:aws:elasticbeanstalk:us-west-2:123412341234:platform/
                        custom_platform/1.0.0
        - complete name: '64bit Amazon Linux 2017.03 v2.7.5 running Multi-container Docker
                            17.03.2-ce (Generic)'
        - shorthand: 'Multi-container Docker 17.03.2-ce (Generic)'
        - language name: 'Multi-container Docker'
        - pythonified shorthand: 'multi-container-docker-17.03.2-ce-(generic)'
    :param find_newer: If solution_string is a complete name or a PlatformArn that uniquely
                        matches a solution stack or platform, find the newest version of the
                        solution stack.

    :return: A SolutionStack object representing the latest version of the `solution_string`.
            In case of a custom platform, the return value is a PlatformVersion object.
    """

    # Compare input with PlatformARNs
    match = None
    if PlatformVersion.is_eb_managed_platform_arn(solution_string):
        if find_newer:
            match = platform_version_ops.get_latest_eb_managed_platform(solution_string)
        else:
            match = platform_arn_to_solution_stack(solution_string)
    elif PlatformVersion.is_custom_platform_arn(solution_string):
        if find_newer:
            match = platform_version_ops.get_latest_custom_platform_version(solution_string)
        else:
            match = platform_version_ops.find_custom_platform_version_from_string(solution_string)

    # Compare input with complete SolutionStack name and retrieve latest SolutionStack
    # in the series if `find_newer` is set to True
    if not match:
        available_solution_stacks = elasticbeanstalk.get_available_solution_stacks()

        match = SolutionStack.match_with_complete_solution_string(available_solution_stacks, solution_string)
        if match and find_newer:
            language_name = SolutionStack(solution_string).language_name
            match = SolutionStack.match_with_solution_string_language_name(
                available_solution_stacks,
                language_name
            )

    # Compare input with other forms
    for solution_string_matcher in [
        SolutionStack.match_with_solution_string_shorthand,
        SolutionStack.match_with_solution_string_language_name,
        SolutionStack.match_with_pythonified_solution_string,
        SolutionStack.match_with_windows_server_version_string,
    ]:
        if not match:
            match = solution_string_matcher(available_solution_stacks, solution_string)

    # Compare input with custom platform names
    if not match:
        match = platform_version_ops.find_custom_platform_version_from_string(solution_string)

    if not match:
        raise NotFoundError(alerts['platform.invalidstring'].format(solution_string))

    return match