Logging request with JAX-RS resteasy and ContainerRequestFilter/ContainerResponseFilter

Question

I want to log entire request and response body. For logging purposes jax-rs have filters.

public class ResponseLoggingFilter implements ContainerRequestFilter, ContainerResponseFilter {
    public void filter(ContainerRequestContext requestContext, ContainerResponseContext responseContext) throws IOException { 
        System.out.println(IOUtils.toString(requestContext.getEntityStream(), "UTF-8")); // It's always empty string
        System.out.println(responseContext.getEntity().toString());  // Here is actual response. It's OK
    }
    public void filter(ContainerRequestContext requestContext) throws IOException { 
        System.out.println(IOUtils.toString(requestContext.getEntityStream(), "UTF-8")); // Here is actual response. But this request is empty in main code. 
    }
}

In response filter I cant get request body. In request filter I cat get it but:

• I cant get a link between request body and response body.
• Once wrote request body from stream setting this stream empty and I cant get it in my main code.

I'm using resteasy 3.0.6.

Answer 1

1.To have connection between request and response use:

@Override
    public void filter(ContainerRequestContext paramContainerRequestContext, ContainerResponseContext paramContainerResponseContext) throws IOException {
        ...     
    }

2. To return the stream to Main code write it back with setEntityStream :

    ByteArrayOutputStream out = new ByteArrayOutputStream(); InputStream in = requestContext.getEntityStream(); final StringBuilder b = new StringBuilder(); try { ReaderWriter.writeTo(in, out); byte[] requestEntity = out.toByteArray(); ... requestContext.setEntityStream(new ByteArrayInputStream(requestEntity)); 

EDIT

Adding using @Moritz Becker comment example of link between request body and response body from ClientLoggingFilter :

 @Override public void filter(final ClientRequestContext requestContext, final ClientResponseContext responseContext) throws IOException { ... final Object requestId = requestContext.getProperty(LOGGING_ID_PROPERTY); final long id = requestId != null ? (Long) requestId : _id.incrementAndGet(); final StringBuilder b = new StringBuilder(); printResponseLine(b, "Client response received", id, responseContext.getStatus()); printPrefixedHeaders(b, id, RESPONSE_PREFIX, responseContext.getHeaders());