/**
* Process this request, publishing an event regardless of the outcome.
*
* <p>The actual event handling is performed by the abstract {@link #doService} template method.
*/
protected final void processRequest(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
long startTime = System.currentTimeMillis();
Throwable failureCause = null;
LocaleContext previousLocaleContext = LocaleContextHolder.getLocaleContext();
LocaleContext localeContext = buildLocaleContext(request);
RequestAttributes previousAttributes = RequestContextHolder.getRequestAttributes();
ServletRequestAttributes requestAttributes =
buildRequestAttributes(request, response, previousAttributes);
WebAsyncManager asyncManager = WebAsyncUtils.getAsyncManager(request);
asyncManager.registerCallableInterceptor(
FrameworkServlet.class.getName(), new RequestBindingInterceptor());
initContextHolders(request, localeContext, requestAttributes);
try {
doService(request, response);
} catch (ServletException ex) {
failureCause = ex;
throw ex;
} catch (IOException ex) {
failureCause = ex;
throw ex;
} catch (Throwable ex) {
failureCause = ex;
throw new NestedServletException("Request processing failed", ex);
} finally {
resetContextHolders(request, previousLocaleContext, previousAttributes);
if (requestAttributes != null) {
requestAttributes.requestCompleted();
}
if (logger.isDebugEnabled()) {
if (failureCause != null) {
this.logger.debug("Could not complete request", failureCause);
} else {
if (asyncManager.isConcurrentHandlingStarted()) {
logger.debug("Leaving response open for concurrent processing");
} else {
this.logger.debug("Successfully completed request");
}
}
}
publishRequestHandledEvent(request, response, startTime, failureCause);
}
}
@Override
protected void service(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
WebAsyncManager asyncManager = WebAsyncUtils.getAsyncManager(request);
TestCallableInterceptor callableInterceptor = new TestCallableInterceptor();
asyncManager.registerCallableInterceptor("mock-mvc", callableInterceptor);
TestDeferredResultInterceptor deferredResultInterceptor = new TestDeferredResultInterceptor();
asyncManager.registerDeferredResultInterceptor("mock-mvc", deferredResultInterceptor);
super.service(request, response);
// TODO: add CountDownLatch to DeferredResultInterceptor and wait in request().asyncResult(..)
Object handler = getMvcResult(request).getHandler();
if (asyncManager.isConcurrentHandlingStarted() && !deferredResultInterceptor.wasInvoked) {
if (!callableInterceptor.await()) {
throw new ServletException(
"Gave up waiting on Callable from [" + handler.getClass().getName() + "] to complete");
}
}
}
@Override
public boolean preHandle(
HttpServletRequest request, final HttpServletResponse response, final Object handler)
throws Exception {
WebAsyncManager asyncManager = WebAsyncUtils.getAsyncManager(request);
asyncManager.setTimeoutHandler(
new Runnable() {
@Override
public void run() {
try {
logger.debug("Custom time out handler called");
response.sendError(
503, "Async execution of [" + handler + "] did not complete on time");
} catch (IOException e) {
logger.error("Timeout not handled", e);
}
}
});
logger.debug("Registered custom timeout handler");
return true;
}
