API Gateway CORS configuration module for Terraform

This is a slim Terraform module which creates an OPTIONS method and applies a CORS configuration for a resource in API Gateway.

Example:

module "MyResourceCors" {
  source = "github.com/itsoneiota/terraform-api-gateway-cors-module"
  resource_id = "${aws_api_gateway_resource.MyResource.id}"
  rest_api_id = "${aws_api_gateway_rest_api.MyAPI.id}"
}

Note:

Be sure to also set the response_parameters values on each of your Method Responses and Integration Responses. Example:

resource "aws_api_gateway_method_response" "DemoPostMethodResponse200" {
  rest_api_id = "${aws_api_gateway_rest_api.API.id}"
  resource_id = "${aws_api_gateway_resource.Demo.id}"
  http_method = "${aws_api_gateway_method.DemoPost.http_method}"
  status_code = "200"
  response_models = {
    "application/json" = "Empty"
  }
  response_parameters = { "method.response.header.Access-Control-Allow-Origin" = "*" }
}