func logRequest()

in internal/httplog/roundtripper.go [147:189]
41 lines of code
5 McCabe index (conditional complexity)

func logRequest(log *slog.Logger, req *http.Request, maxBodyLen int, extra ...slog.Attr) (_ *http.Request, parts []slog.Attr, errorsMessages []string) {
	reqParts := append([]slog.Attr{
		slog.String("url.original", req.URL.String()),
		slog.String("url.scheme", req.URL.Scheme),
		slog.String("url.path", req.URL.Path),
		slog.String("url.domain", req.URL.Hostname()),
		slog.String("url.port", req.URL.Port()),
		slog.String("url.query", req.URL.RawQuery),
		slog.String("http.request.method", req.Method),
		slog.String("user_agent.original", req.Header.Get("User-Agent")),
	}, extra...)

	var (
		body []byte
		err  error
	)
	req.Body, body, err = copyBody(req.Body)
	if err != nil {
		errorsMessages = append(errorsMessages, fmt.Sprintf("failed to read request body: %s", err))
	}
	reqParts = append(reqParts,
		slog.Any("http.request.body.content", byteString(body[:min(len(body), maxBodyLen)])),
		slog.Bool("http.request.body.truncated", maxBodyLen < len(body)),
		slog.Int("http.request.body.bytes", len(body)),
		slog.String("http.request.mime_type", req.Header.Get("Content-Type")),
	)
	message, err := httputil.DumpRequestOut(req, false)
	if err != nil {
		errorsMessages = append(errorsMessages, fmt.Sprintf("failed to dump request: %s", err))
	} else {
		reqParts = append(reqParts, slog.Any("event.original", byteString(message)))
	}
	switch len(errorsMessages) {
	case 0:
	case 1:
		reqParts = append(reqParts, slog.String("error.message", errorsMessages[0]))
	default:
		reqParts = append(reqParts, slog.Any("error.message", errorsMessages))
	}
	log.LogAttrs(context.Background(), slog.LevelInfo, "HTTP request", reqParts...)

	return req, reqParts[:0], errorsMessages
}