def generate_swagger()

in samtranslator/model/apigateway.py [0:0]
40 lines of code
12 McCabe index (conditional complexity)

    def generate_swagger(self) -> Py27Dict:
        authorizer_type = self._get_type()
        APIGATEWAY_AUTHORIZER_KEY = "x-amazon-apigateway-authorizer"
        swagger = Py27Dict()
        swagger["type"] = "apiKey"
        swagger["name"] = self._get_swagger_header_name()
        swagger["in"] = "header"
        swagger["x-amazon-apigateway-authtype"] = self._get_swagger_authtype()

        if authorizer_type == "COGNITO_USER_POOLS":
            authorizer_dict = Py27Dict()
            authorizer_dict["type"] = self._get_swagger_authorizer_type()
            authorizer_dict["providerARNs"] = self._get_user_pool_arn_array()
            swagger[APIGATEWAY_AUTHORIZER_KEY] = authorizer_dict

        elif authorizer_type == "LAMBDA":
            swagger[APIGATEWAY_AUTHORIZER_KEY] = Py27Dict({"type": self._get_swagger_authorizer_type()})
            partition = ArnGenerator.get_partition_name()
            resource = "lambda:path/2015-03-31/functions/${__FunctionArn__}/invocations"
            authorizer_uri = fnSub(
                ArnGenerator.generate_arn(
                    partition=partition, service="apigateway", resource=resource, include_account_id=False
                ),
                {"__FunctionArn__": self.function_arn},
            )

            swagger[APIGATEWAY_AUTHORIZER_KEY]["authorizerUri"] = authorizer_uri
            reauthorize_every = self._get_reauthorize_every()
            function_invoke_role = self._get_function_invoke_role()

            if reauthorize_every is not None:
                swagger[APIGATEWAY_AUTHORIZER_KEY]["authorizerResultTtlInSeconds"] = reauthorize_every

            if function_invoke_role:
                swagger[APIGATEWAY_AUTHORIZER_KEY]["authorizerCredentials"] = function_invoke_role

            if self._get_function_payload_type() == "REQUEST":
                identity_source = self._get_identity_source()
                if identity_source:
                    swagger[APIGATEWAY_AUTHORIZER_KEY]["identitySource"] = self._get_identity_source()

        # Authorizer Validation Expression is only allowed on COGNITO_USER_POOLS and LAMBDA_TOKEN
        is_lambda_token_authorizer = authorizer_type == "LAMBDA" and self._get_function_payload_type() == "TOKEN"

        if authorizer_type == "COGNITO_USER_POOLS" or is_lambda_token_authorizer:
            identity_validation_expression = self._get_identity_validation_expression()

            if identity_validation_expression:
                swagger[APIGATEWAY_AUTHORIZER_KEY]["identityValidationExpression"] = identity_validation_expression

        return swagger