enhance function name variable to api gateway

modules/api_gateway/rest_api.tf

@@ -43,7 +43,7 @@ resource "aws_api_gateway_method_response" "response_200" {
 resource "aws_lambda_permission" "lambda_permission" {
   statement_id  = "AllowExecutionFromAPIGateway"
   action        = "lambda:InvokeFunction"
-  function_name = var.resource_name_pattern
+  function_name = var.function_name
   principal     = "apigateway.amazonaws.com"
   source_arn    = local.rest_api_execution_arn
 }

modules/api_gateway/variables.tf

@@ -34,4 +34,9 @@ variable "tags" {
 variable "integration_type" {
   type        = string
   description = "Spectral integration type (A unique phrase describing the integration) - Available values: `terraform`."
+}
+
+variable "function_name" {
+  type        = string
+  description = "The name of the function the API would trigger upon request"
 }

modules/lambda/lambda.tf

@@ -1,6 +1,6 @@
 locals {
   runtime                     = "nodejs20.x"
-  lambda_source_code_zip_path = "${coalesce(var.lambda_source_code_path, "${path.module}/source_code/${var.integration_type}")}/${var.lambda_source_code_filename}"
+  lambda_source_code_zip_path = coalesce(var.lambda_source_code_path, "${path.module}/source_code/${var.integration_type}/${var.lambda_source_code_filename}")
 }
 
 resource "aws_lambda_function" "spectral_scanner_lambda" {

shared.tf

@@ -10,7 +10,8 @@ module "api_gateway" {
   tags                  = var.tags
   environment           = var.environment
   integration_type      = var.integration_type
-  resource_name_pattern = local.single_lambda_integration ? local.resource_name_pattern : "${local.resource_name_pattern}-frontend"
+  resource_name_pattern = local.resource_name_pattern
+  function_name         = local.single_lambda_integration ? local.resource_name_pattern : "${local.resource_name_pattern}-frontend"
   lambda_function_arn   = local.api_triggered_function_arn
 }