| 50 | } |
| 51 | |
| 52 | func (h *handler) ServeHTTP(goWriter goHttp.ResponseWriter, goRequest *goHttp.Request) { |
| 53 | response := serverResponse{ |
| 54 | statusCode: 200, |
| 55 | body: nil, |
| 56 | } |
| 57 | if err := h.requestHandler.OnRequest( |
| 58 | &internalRequest{ |
| 59 | request: goRequest, |
| 60 | writer: goWriter, |
| 61 | }, |
| 62 | &response, |
| 63 | ); err != nil { |
| 64 | if errors.Is(err, &badRequestResponse) { |
| 65 | response = badRequestResponse |
| 66 | } else { |
| 67 | response = internalErrorResponse |
| 68 | } |
| 69 | } |
| 70 | marshaller, responseType, statusCode := h.findMarshaller(goWriter, goRequest) |
| 71 | if statusCode != 200 { |
| 72 | goWriter.WriteHeader(statusCode) |
| 73 | } |
| 74 | bytes, err := marshaller.Marshal(response.body) |
| 75 | if err != nil { |
| 76 | h.logger.Error(message.Wrap(err, message.MHTTPServerEncodeFailed, "failed to marshal response %v", response)) |
| 77 | response = internalErrorResponse |
| 78 | bytes, err = json.Marshal(internalErrorResponse.body) |
| 79 | if err != nil { |
| 80 | // This should never happen |
| 81 | panic(fmt.Errorf("bug: failed to marshal internal server error JSON response (%w)", err)) |
| 82 | } |
| 83 | } |
| 84 | goWriter.WriteHeader(int(response.statusCode)) |
| 85 | goWriter.Header().Add("Content-Type", responseType) |
| 86 | if _, err := goWriter.Write(bytes); err != nil { |
| 87 | h.logger.Debug(message.Wrap(err, message.MHTTPServerResponseWriteFailed, "Failed to write HTTP response")) |
| 88 | } |
| 89 | } |
| 90 | |
| 91 | func (h *handler) findMarshaller(_ goHttp.ResponseWriter, request *goHttp.Request) (responseMarshaller, string, int) { |
| 92 | acceptHeader := request.Header.Get("Accept") |