org.jboss.resteasy.plugins.interceptors.encoding.AcceptEncodingGZIPInterceptor Maven / Gradle / Ivy

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package org.jboss.resteasy.plugins.interceptors.encoding;

import org.jboss.resteasy.annotations.interception.ClientInterceptor;
import org.jboss.resteasy.annotations.interception.HeaderDecoratorPrecedence;
import org.jboss.resteasy.client.ClientResponse;
import org.jboss.resteasy.spi.interception.ClientExecutionContext;
import org.jboss.resteasy.spi.interception.ClientExecutionInterceptor;

import javax.ws.rs.core.HttpHeaders;
import javax.ws.rs.ext.Provider;

/**
 * Must be used in conjunction with GZIPDecodingInterceptor
 * 
 * Sets
 *
 * @author Bill Burke
 * @version $Revision: 1 $
 */
@Provider
@ClientInterceptor
@HeaderDecoratorPrecedence
public class AcceptEncodingGZIPInterceptor implements ClientExecutionInterceptor
{
   public ClientResponse execute(ClientExecutionContext ctx) throws Exception
   {
      String encoding = ctx.getRequest().getHeaders().getFirst(HttpHeaders.ACCEPT_ENCODING);
      if (encoding == null)
      {
         ctx.getRequest().header(HttpHeaders.ACCEPT_ENCODING, "gzip, deflate");
      }
      else
      {
         if (!encoding.contains("gzip"))
         {
            encoding += ", gzip";
            ctx.getRequest().header(HttpHeaders.ACCEPT_ENCODING, encoding);
         }
      }
      return ctx.proceed();
   }
}