logRequestResult

Description

Logs both, the request and the response.

This directive is a combination of logRequest and logResult.

See logRequest for the general description how these directives work.

Example

// using logRequestResult
// handle request to optionally generate a log entry
BiFunction<HttpRequest, HttpResponse, Optional<LogEntry>> requestMethodAsInfo =
  (request, response) ->
    (response.status().isSuccess()) ?
      Optional.of(
        LogEntry.create(
          request.method().name() + ":" + response.status().intValue(),
          InfoLevel()))
      : Optional.empty(); // not a successful response

// handle rejections to optionally generate a log entry
BiFunction<HttpRequest, List<Rejection>, Optional<LogEntry>> rejectionsAsInfo =
  (request, rejections) ->
    (!rejections.isEmpty()) ?
      Optional.of(
        LogEntry.create(
          rejections
            .stream()
            .map(Rejection::toString)
            .collect(Collectors.joining(", ")),
          InfoLevel()))
      : Optional.empty(); // no rejections

final Route route = get(() -> logRequestResultOptional(
  requestMethodAsInfo,
  rejectionsAsInfo,
  () -> complete("logged")));
// tests:
testRoute(route).run(HttpRequest.GET("/")).assertEntity("logged");

Longer Example

This example shows how to log the response time of the request using the Debugging Directive

// using logRequestResultOptional for generating Response Time
// handle request to optionally generate a log entry

BiFunction<HttpRequest, HttpResponse, Optional<LogEntry>> requestMethodAsInfo =
  (request, response) -> {
    Long requestTime = System.nanoTime();
    return printResponseTime(request, response, requestTime);
  };

// handle rejections to optionally generate a log entry
BiFunction<HttpRequest, List<Rejection>, Optional<LogEntry>> rejectionsAsInfo =
  (request, rejections) ->
    (!rejections.isEmpty()) ?
      Optional.of(
        LogEntry.create(
          rejections
            .stream()
            .map(Rejection::toString)
            .collect(Collectors.joining(", ")),
          InfoLevel()))
      : Optional.empty(); // no rejections

final Route route = get(() -> logRequestResultOptional(
  requestMethodAsInfo,
  rejectionsAsInfo,
  () -> complete("logged")));
// tests:
testRoute(route).run(HttpRequest.GET("/")).assertEntity("logged");