CustomInterceptor.java

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package org.glassfish.jersey.tests.performance.interceptor.global;

import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.SequenceInputStream;

import javax.ws.rs.WebApplicationException;
import javax.ws.rs.ext.Provider;
import javax.ws.rs.ext.ReaderInterceptor;
import javax.ws.rs.ext.ReaderInterceptorContext;
import javax.ws.rs.ext.WriterInterceptor;
import javax.ws.rs.ext.WriterInterceptorContext;

/**
 * Custom interceptor.
 *
 * @author Jakub Podlesak (jakub.podlesak at oracle.com)
 */
@Provider
public class CustomInterceptor implements ReaderInterceptor, WriterInterceptor {

    @Override
    public Object aroundReadFrom(ReaderInterceptorContext context) throws IOException, WebApplicationException {
        context.setInputStream(new SequenceInputStream(new ByteArrayInputStream("READ ".getBytes()), context.getInputStream()));
        return context.proceed();
    }

    @Override
    public void aroundWriteTo(WriterInterceptorContext context) throws IOException, WebApplicationException {
    context.getOutputStream().write("WRITE ".getBytes());
        context.proceed();
    }
}