def get_value_from_scenario()

in src/cfnlint/template.py [0:0]

• 43 lines of code
• 19 McCabe index (conditional complexity)

    def get_value_from_scenario(self, obj, scenario):
        """
            Get object values from a provided scenario
        """

        def get_value(value, scenario):  # pylint: disable=R0911
            """ Get the value based on the scenario resolving nesting """
            if isinstance(value, dict):
                if len(value) == 1:
                    if 'Fn::If' in value:
                        if_values = value.get('Fn::If')
                        if len(if_values) == 3:
                            if_path = scenario.get(if_values[0], None)
                            if if_path is not None:
                                if if_path:
                                    return get_value(if_values[1], scenario)
                                return get_value(if_values[2], scenario)
                    elif value.get('Ref') == 'AWS::NoValue':
                        return None
                    else:
                        return value

                return value
            if isinstance(value, list):
                new_list = []
                for item in value:
                    new_value = get_value(item, scenario)
                    if new_value is not None:
                        new_list.append(get_value(item, scenario))

                return new_list

            return value

        result = cfnlint.dict_node({}, obj.start_mark, obj.end_mark)
        if isinstance(obj, dict):
            if len(obj) == 1:
                if obj.get('Fn::If'):
                    new_value = get_value(obj, scenario)
                    if new_value is not None:
                        result = new_value
                else:
                    for key, value in obj.items():
                        new_value = get_value(value, scenario)
                        if new_value is not None:
                            result[key] = new_value
            else:
                for key, value in obj.items():
                    new_value = get_value(value, scenario)
                    if new_value is not None:
                        result[key] = new_value

        return result