public void handleException(HttpRequest request, HttpResponse response, Throwable e) {
// See if there is an ExceptionMapper for the exact class of the exception instance being thrown
if (executeExactExceptionMapper(request, response, e)) return;
// These are wrapper exceptions so they need to be processed first as they map e.getCause()
if (e instanceof ApplicationException) {
handleApplicationException(request, response, (ApplicationException) e);
return;
} else if (e instanceof WriterException) {
handleWriterException(request, response, (WriterException) e);
return;
} else if (e instanceof ReaderException) {
handleReaderException(request, response, (ReaderException) e);
return;
}
// First try and handle it with a mapper
if (executeExceptionMapper(request, response, e)) {
return;
}
// Otherwise do specific things
else if (e instanceof WebApplicationException) {
handleWebApplicationException(request, response, (WebApplicationException) e);
} else if (e instanceof Failure) {
handleFailure(request, response, (Failure) e);
} else {
logger.error(
"Unknown exception while executing "
+ request.getHttpMethod()
+ " "
+ request.getUri().getPath(),
e);
throw new UnhandledException(e);
}
}
protected Throwable unwrapException(HttpRequest request, HttpResponse response, Throwable e) {
Throwable unwrappedException = e.getCause();
if (executeExceptionMapper(request, response, unwrappedException)) {
return null;
}
if (unwrappedException instanceof WebApplicationException) {
handleWebApplicationException(
request, response, (WebApplicationException) unwrappedException);
return null;
} else if (unwrappedException instanceof Failure) {
handleFailure(request, response, (Failure) unwrappedException);
return null;
} else {
if (unwrappedExceptions.contains(unwrappedException.getClass().getName())
&& unwrappedException.getCause() != null) {
return unwrapException(request, response, unwrappedException);
} else {
return unwrappedException;
}
}
}