Examples with AsyncContextImpl io.undertow.servlet.spec.AsyncContextImpl used on opensource projects

Example 1 with AsyncContextImpl

use of io.undertow.servlet.spec.AsyncContextImpl in project undertow by undertow-io.

the class ServletInitialHandler method handleFirstRequest.

private void handleFirstRequest(final HttpServerExchange exchange, ServletRequestContext servletRequestContext) throws Exception {
    ServletRequest request = servletRequestContext.getServletRequest();
    ServletResponse response = servletRequestContext.getServletResponse();
    // set request attributes from the connector
    // generally this is only applicable if apache is sending AJP_ prefixed environment variables
    Map<String, String> attrs = exchange.getAttachment(HttpServerExchange.REQUEST_ATTRIBUTES);
    if (attrs != null) {
        for (Map.Entry<String, String> entry : attrs.entrySet()) {
            request.setAttribute(entry.getKey(), entry.getValue());
        }
    }
    servletRequestContext.setRunningInsideHandler(true);
    try {
        listeners.requestInitialized(request);
        next.handleRequest(exchange);
        AsyncContextImpl asyncContextInternal = servletRequestContext.getOriginalRequest().getAsyncContextInternal();
        if (asyncContextInternal != null && asyncContextInternal.isCompletedBeforeInitialRequestDone()) {
            asyncContextInternal.handleCompletedBeforeInitialRequestDone();
        }
        // 
        if (servletRequestContext.getErrorCode() > 0) {
            servletRequestContext.getOriginalResponse().doErrorDispatch(servletRequestContext.getErrorCode(), servletRequestContext.getErrorMessage());
        }
    } catch (Throwable t) {
        servletRequestContext.setRunningInsideHandler(false);
        AsyncContextImpl asyncContextInternal = servletRequestContext.getOriginalRequest().getAsyncContextInternal();
        if (asyncContextInternal != null && asyncContextInternal.isCompletedBeforeInitialRequestDone()) {
            asyncContextInternal.handleCompletedBeforeInitialRequestDone();
        }
        if (asyncContextInternal != null) {
            asyncContextInternal.initialRequestFailed();
        }
        // by default this will just log the exception
        boolean handled = exceptionHandler.handleThrowable(exchange, request, response, t);
        if (handled) {
            exchange.endExchange();
        } else if (request.isAsyncStarted() || request.getDispatcherType() == DispatcherType.ASYNC) {
            exchange.unDispatch();
            servletRequestContext.getOriginalRequest().getAsyncContextInternal().handleError(t);
        } else {
            if (!exchange.isResponseStarted()) {
                // reset the response
                response.reset();
                exchange.setStatusCode(StatusCodes.INTERNAL_SERVER_ERROR);
                exchange.getResponseHeaders().clear();
                String location = servletContext.getDeployment().getErrorPages().getErrorLocation(t);
                if (location == null) {
                    location = servletContext.getDeployment().getErrorPages().getErrorLocation(StatusCodes.INTERNAL_SERVER_ERROR);
                }
                if (location != null) {
                    RequestDispatcherImpl dispatcher = new RequestDispatcherImpl(location, servletContext);
                    try {
                        dispatcher.error(servletRequestContext, request, response, servletRequestContext.getOriginalServletPathMatch().getServletChain().getManagedServlet().getServletInfo().getName(), t);
                    } catch (Exception e) {
                        UndertowLogger.REQUEST_LOGGER.exceptionGeneratingErrorPage(e, location);
                    }
                } else {
                    if (servletRequestContext.displayStackTraces()) {
                        ServletDebugPageHandler.handleRequest(exchange, servletRequestContext, t);
                    } else {
                        servletRequestContext.getOriginalResponse().doErrorDispatch(StatusCodes.INTERNAL_SERVER_ERROR, StatusCodes.INTERNAL_SERVER_ERROR_STRING);
                    }
                }
            }
        }
    } finally {
        servletRequestContext.setRunningInsideHandler(false);
        listeners.requestDestroyed(request);
    }
    // if it is not dispatched and is not a mock request
    if (!exchange.isDispatched() && !(exchange.getConnection() instanceof MockServerConnection)) {
        servletRequestContext.getOriginalResponse().responseDone();
    }
    if (!exchange.isDispatched()) {
        AsyncContextImpl ctx = servletRequestContext.getOriginalRequest().getAsyncContextInternal();
        if (ctx != null) {
            ctx.complete();
        }
    }
}