Given Gateway does not receive a valid token, enhance its return

[plopezgit]

result: on postman I only get information about the HttpStatus
expected: trigger an exception and control it

First test manage to trigger de custom exception but Auth Exception Controller does not capture it.

    @Override
    public GatewayFilter apply(Config config) {
        return (((exchange, chain) -> {
            if(!exchange.getRequest().getHeaders().containsKey(HttpHeaders.AUTHORIZATION))
                return onError(exchange, HttpStatus.BAD_REQUEST);
            String tokenHeader = exchange.getRequest().getHeaders().get(HttpHeaders.AUTHORIZATION).get(0);
            String [] chunks = tokenHeader.split(" ");
            if(chunks.length != 2 || !chunks[0].equals("Bearer"))
                return onError(exchange, HttpStatus.BAD_REQUEST);
            return webClient.build()
                    .post()
                    .uri("http://auth-service/auth/validate?token=" + chunks[1])
                    .bodyValue(new HttpRequestDTO(exchange.getRequest().getPath().toString(), exchange.getRequest().getMethod().toString()))
                    .retrieve().bodyToMono(TokenDTO.class)
                    .map(t -> {
                        t.getToken();
                        return exchange;
                    }).flatMap(chain::filter);
        }));
    }

    public Mono<Void> onError(ServerWebExchange exchange, HttpStatus status){
        ServerHttpResponse response = exchange.getResponse();
        response.setStatusCode(status);
        return response.setComplete();
    }