HTTP Proxy via CloudFormation

Serverless Framework
3

Update: I got it working! I noticed that the exported swagger is basically cloudformation, so that told me what pieces were missing from the original cloudformation.

resources:
  Resources:
    ProxyParentResource:
      Type: AWS::ApiGateway::Resource
      Properties:
        ParentId:
          Fn::GetAtt:
            - ApiGatewayRestApi # serverless default Rest API logical ID
            - RootResourceId
        PathPart: 'carto'
        RestApiId:
          Ref: ApiGatewayRestApi
    ProxyResource:
      Type: AWS::ApiGateway::Resource
      Properties:
        ParentId:
          Ref: ProxyParentResource
        PathPart: '{proxy+}' # the endpoint in your API that is set as proxy
        RestApiId:
          Ref: ApiGatewayRestApi
    ProxyMethod:
      Type: AWS::ApiGateway::Method
      Properties:
        ResourceId:
          Ref: ProxyResource
        RestApiId:
          Ref: ApiGatewayRestApi
        AuthorizationType: NONE
        HttpMethod: GET # the method of your proxy. Is it GET or POST or ... ?
        MethodResponses:
          - StatusCode: 200
        RequestParameters:
          method.request.path.proxy: true
        Integration:
          IntegrationHttpMethod: GET
          Type: HTTP_PROXY
          Uri: https://phl.carto.com/{proxy} # the URL you want to set a proxy to
          IntegrationResponses:
            - StatusCode: 200
          RequestParameters:
            integration.request.path.proxy: method.request.path.proxy
            integration.request.header.Accept-Encoding: "'identity'"
          PassthroughBehavior: WHEN_NO_MATCH
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