[Resteasy-users] Premature response commiting

[Przemyslaw W. <prz...@go...>]

Hello,

I'm exposing my application via RESTEasy 3.0.5Final with Jackson JSON
provider. The serialization is still being written, so sometimes bugs
creep out. Most often it is some exception being thrown by the Jackson
serializer.

However, at the moment it happens, the response is already commited,
status code set to 200 and partial response is being written to the
output. This is Very Bad Thing, as from the client perspective the 200
status code means everything went OK, but the JSON is broken.

For example, if the Jackson can't serialize field "abc", the resulting
JSON looks like:

> {
>   // some fields serialized correctly by Jackson, like:
>   "ok_field": 1,
>   // ...
>   // and then the erronous one, the name without a value:
>   "abc"}


This is because of the setStatus() call being in ServerResponseWriter in
line 70:

>       response.setStatus(jaxrsResponse.getStatus());

while the serialization (and an exception throw) being in line 99:

>       writerContext.proceed();

Is there any way I can defer committing anything in the response until
the whole response body is prepared?

Regards,
Przemek