Ejemplo n.º 1
0
  @Override
  public void badMessage(int status, String reason) {
    if (status < 400 || status > 599) status = HttpStatus.BAD_REQUEST_400;

    try {
      if (_state.handling() == Next.CONTINUE)
        sendResponse(
            new ResponseInfo(HttpVersion.HTTP_1_1, new HttpFields(), 0, status, reason, false),
            null,
            true);
    } catch (IOException e) {
      LOG.warn("badMessage", e);
    } finally {
      if (_state.unhandle() == Next.COMPLETE) _state.completed();
    }
  }
Ejemplo n.º 2
0
 /**
  * Sends an error 500, performing a special logic to detect whether the request is suspended, to
  * avoid concurrent writes from the application.
  *
  * <p>It may happen that the application suspends, and then throws an exception, while an
  * application spawned thread writes the response content; in such case, we attempt to commit the
  * error directly bypassing the {@link ErrorHandler} mechanisms and the response OutputStream.
  *
  * @param x the Throwable that caused the problem
  */
 protected void handleException(Throwable x) {
   try {
     _request.setAttribute(RequestDispatcher.ERROR_EXCEPTION, x);
     _request.setAttribute(RequestDispatcher.ERROR_EXCEPTION_TYPE, x.getClass());
     if (_state.isSuspended()) {
       HttpFields fields = new HttpFields();
       fields.add(HttpHeader.CONNECTION, HttpHeaderValue.CLOSE);
       ResponseInfo info =
           new ResponseInfo(
               _request.getHttpVersion(),
               fields,
               0,
               HttpStatus.INTERNAL_SERVER_ERROR_500,
               null,
               _request.isHead());
       boolean committed = sendResponse(info, null, true);
       if (!committed) LOG.warn("Could not send response error 500: " + x);
       _request.getAsyncContext().complete();
     } else if (isCommitted()) {
       if (!(x instanceof EofException)) LOG.warn("Could not send response error 500: " + x);
     } else {
       _response.setHeader(HttpHeader.CONNECTION.asString(), HttpHeaderValue.CLOSE.asString());
       _response.sendError(500, x.getMessage());
     }
   } catch (IOException e) {
     // We tried our best, just log
     LOG.debug("Could not commit response error 500", e);
   }
 }
Ejemplo n.º 3
0
 @Override
 public String toString() {
   return String.format(
       "%s@%x{r=%s,a=%s,uri=%s}",
       getClass().getSimpleName(),
       hashCode(),
       _requests,
       _state.getState(),
       _state.getState() == HttpChannelState.State.IDLE ? "-" : _request.getRequestURI());
 }
  @Override
  public void handle(
      String path,
      Request request,
      HttpServletRequest httpRequest,
      HttpServletResponse httpResponse)
      throws IOException, ServletException {

    activeDispatches.inc();

    final long start;
    final HttpChannelState state = request.getHttpChannelState();
    if (state.isInitial()) {
      // new request
      activeRequests.inc();
      start = request.getTimeStamp();
    } else {
      // resumed request
      start = System.currentTimeMillis();
      activeSuspended.dec();
      if (state.getState() == State.DISPATCHED) {
        asyncDispatches.mark();
      }
    }

    try {
      super.handle(path, request, httpRequest, httpResponse);
    } finally {
      final long now = System.currentTimeMillis();
      final long dispatched = now - start;

      activeDispatches.dec();
      dispatches.update(dispatched, TimeUnit.MILLISECONDS);

      if (state.isSuspended()) {
        if (state.isInitial()) {
          state.addListener(listener);
        }
        activeSuspended.inc();
      } else if (state.isInitial()) {
        requests.update(dispatched, TimeUnit.MILLISECONDS);
        updateResponses(request);
      }
      // else onCompletion will handle it.
    }
  }
Ejemplo n.º 5
0
  /** @return True if the channel is ready to continue handling (ie it is not suspended) */
  public boolean handle() {
    LOG.debug("{} handle enter", this);

    setCurrentHttpChannel(this);

    String threadName = null;
    if (LOG.isDebugEnabled()) {
      threadName = Thread.currentThread().getName();
      Thread.currentThread().setName(threadName + " - " + _uri);
    }

    // Loop here to handle async request redispatches.
    // The loop is controlled by the call to async.unhandle in the
    // finally block below.  Unhandle will return false only if an async dispatch has
    // already happened when unhandle is called.
    HttpChannelState.Next next = _state.handling();
    while (next == Next.CONTINUE && getServer().isRunning()) {
      boolean error = false;
      try {
        _request.setHandled(false);
        _response.getHttpOutput().reopen();

        if (_state.isInitial()) {
          _request.setTimeStamp(System.currentTimeMillis());
          _request.setDispatcherType(DispatcherType.REQUEST);

          for (HttpConfiguration.Customizer customizer : _configuration.getCustomizers())
            customizer.customize(getConnector(), _configuration, _request);
          getServer().handle(this);
        } else {
          if (_request.getHttpChannelState().isExpired()) {
            _request.setDispatcherType(DispatcherType.ERROR);

            Throwable ex = _state.getAsyncContextEvent().getThrowable();
            String reason = "Async Timeout";
            if (ex != null) {
              reason = "Async Exception";
              _request.setAttribute(RequestDispatcher.ERROR_EXCEPTION, ex);
            }
            _request.setAttribute(RequestDispatcher.ERROR_STATUS_CODE, new Integer(500));
            _request.setAttribute(RequestDispatcher.ERROR_MESSAGE, reason);
            _request.setAttribute(RequestDispatcher.ERROR_REQUEST_URI, _request.getRequestURI());

            _response.setStatusWithReason(500, reason);

            ErrorHandler eh = _state.getContextHandler().getErrorHandler();
            if (eh instanceof ErrorHandler.ErrorPageMapper) {
              String error_page =
                  ((ErrorHandler.ErrorPageMapper) eh)
                      .getErrorPage(
                          (HttpServletRequest) _state.getAsyncContextEvent().getSuppliedRequest());
              if (error_page != null) _state.getAsyncContextEvent().setDispatchPath(error_page);
            }
          } else _request.setDispatcherType(DispatcherType.ASYNC);
          getServer().handleAsync(this);
        }
      } catch (Error e) {
        if ("ContinuationThrowable".equals(e.getClass().getSimpleName())) LOG.ignore(e);
        else {
          error = true;
          throw e;
        }
      } catch (Exception e) {
        error = true;
        if (e instanceof EofException) LOG.debug(e);
        else LOG.warn(String.valueOf(_uri), e);
        _state.error(e);
        _request.setHandled(true);
        handleException(e);
      } finally {
        if (error && _state.isAsyncStarted()) _state.errorComplete();
        next = _state.unhandle();
      }
    }

    if (threadName != null && LOG.isDebugEnabled()) Thread.currentThread().setName(threadName);
    setCurrentHttpChannel(null);

    if (next == Next.COMPLETE) {
      try {
        _state.completed();

        if (!_response.isCommitted() && !_request.isHandled()) _response.sendError(404);
        else
          // Complete generating the response
          _response.closeOutput();
      } catch (EofException | ClosedChannelException e) {
        LOG.debug(e);
      } catch (Exception e) {
        LOG.warn("complete failed", e);
      } finally {
        _request.setHandled(true);
        _transport.completed();
      }
    }

    LOG.debug("{} handle exit, result {}", this, next);

    return next != Next.WAIT;
  }