Terraform AWS API Gateway with Proxy BadRequest Exception Invalid Mapping - amazon-web-services

Question

I am trying to create an aws proxy with terraform. I am currently stuck when applying the changes.
The error I get within the resource "aws_api_gateway_integration" is the following:
Error: Error creating API Gateway Integration: BadRequestException: Invalid mapping expression specified: Validation Result: warnings : [], errors : [Parameter name should match the following regular expression: ^[a-zA-Z0-9:._$-]+$]
Here is my code:
resource "aws_api_gateway_integration" "itemPutMethod-ApiProxyIntegration" {
rest_api_id = "${aws_api_gateway_rest_api.apiGateway.id}"
resource_id = "${aws_api_gateway_resource.itemResource.id}"
http_method = "${aws_api_gateway_method.itemPutMethod.http_method}"
type = "AWS"
integration_http_method = "PUT"
credentials = "${aws_iam_role.s3_proxy_role.arn}"
uri = "arn:aws:apigateway:${var.region}:s3:path/{bucket}/{folder}/{item}"
request_parameters = {
"integration.request.header.x-amz-meta-fileinfo" = "method.request.header.x-amz-meta-fileinfo"
"integration.request.header.Accept" = "method.request.header.Accept"
"integration.request.header.Content-Type " = "method.request.header.Content-Type"
"integration.request.path.item" = "method.request.path.item"
"integration.request.path.folder" = "method.request.path.folder"
"integration.request.path.bucket" = "method.request.path.bucket"
}
}
And here is my code for the method:
resource "aws_api_gateway_method" "itemPutMethod" {
rest_api_id = "${aws_api_gateway_rest_api.apiGateway.id}"
resource_id = "${aws_api_gateway_resource.itemResource.id}"
http_method = "PUT"
authorization = "NONE"
api_key_required = true
request_parameters = {
"method.request.header.Accept" = false
"method.request.header.Content-Type" = false
"method.request.header.x-amz-meta-fileinfo" = false
"method.request.path.bucket" = true
"method.request.path.folder" = true
"method.request.path.item" = true
}
}
As far as I understand I have a bad character in the parameter names but I can't figure out where. Any help would be greatly appreciated, thank you!
API Gateway Resource
resource "aws_api_gateway_resource" "bucketResource" {
rest_api_id = "${aws_api_gateway_rest_api.apiGateway.id}"
parent_id = "${aws_api_gateway_rest_api.apiGateway.root_resource_id}"
path_part = "{bucket}"
}
resource "aws_api_gateway_resource" "folderResource" {
rest_api_id = "${aws_api_gateway_rest_api.apiGateway.id}"
parent_id = "${aws_api_gateway_resource.bucketResource.id}"
path_part = "{folder}"
}
resource "aws_api_gateway_resource" "itemResource" {
rest_api_id = "${aws_api_gateway_rest_api.apiGateway.id}"
parent_id = "${aws_api_gateway_resource.folderResource.id}"
path_part = "{item}"
}
Link to tutorial code:
https://github.com/robty123/s3-proxy

Answer 1

Your request_parameters argument in aws_api_gateway_integration resource have a space in one of the mappings. That seems to be the cause of failing regex match.
Change this
"integration.request.header.Content-Type " = "method.request.header.Content-Type"
to
"integration.request.header.Content-Type" = "method.request.header.Content-Type"