def match()

in cfn-lint-serverless/cfn_lint_serverless/rules/lambda_.py [0:0]

• 15 lines of code
• 6 McCabe index (conditional complexity)

    def match(self, cfn):
        """
        Match against Lambda functions without a LogGroup with a Retention property
        """

        matches = []

        functions = cfn.get_resources(["AWS::Lambda::Function"])
        log_groups = cfn.get_resources(["AWS::Logs::LogGroup"])

        known = self._get_valid_functions(log_groups)

        # Scan functions against log groups
        for function_ref, function in functions.items():
            log_group_found = False

            if function_ref in known["ref"]:
                log_group_found = True

            function_name = function.get("Properties", {}).get("FunctionName", None)
            if function_name is not None and function_name in known["name"]:
                log_group_found = True

            if not log_group_found:
                matches.append(RuleMatch(["Resources", function_ref], self._message.format(function_ref)))

        return matches