Not able to access headers object from apollo_mocks::get_supergraph_service_response()

[prasadrlv]

I get the following error when accessing the headers object from the supergraph service response.

Rhai script is forwarding the custom response headers from subgraphs to the client.

"
Unknown property 'headers' - a getter is not registered for type 'alloc::sync::Arc<std::sync::mutex::Mutex<core::option::Option<apollo_router::services::supergraph::Response>>>'
"
response-header-forwarder.rhai:

// Configure allowed response headers
fn getAllowedResponseHeaders() {
    ["custom_response_header"]
}
fn copyResponseHeadersInResponse(response) {
    for header in getAllowedResponseHeaders() {
        if response.context[header]!=() {
           response.headers[header] = response.context[header];
       }
   }
}

response-header-forwarder.test.rhai:

test("Validate response header", ||{

    let mockResponse = apollo_mocks::get_supergraph_service_response();
      mockResponse.context["custom_response_header"]= "custom header value";

   const execute = || {
        import "response-header-forwarder" as responseHeaderForwarder;
        responseHeaderForwarder::copyResponseHeadersInResponse(mockResponse);
    };
    execute.call();
    
    expect(mockResponse.headers["custom_response_header"]).to_be("custom header value");
});

[andrewmcgivery]

Can you please try reformatting your description with proper code blocks? :)

Also a screenshot of the full error output would be helpful!

Additionally, the code of the function you're testing responseHeaderForwarder::copyResponseHeadersInResponse would also help. :)

[prasadrlv]

@andrewmcgivery
The response header forwarder rhai script is similar to the solution mentioned in apollographql/router#2060.
I updated the issue with code blocks. I request you please check.