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From "iris ding (JIRA)" <j...@apache.org>
Subject [jira] [Created] (CXF-6373) CompletionCallback can not get the Throwable if error occurs in other interceptor (no serviceinvokerInterceptor)
Date Sun, 26 Apr 2015 02:10:38 GMT
iris ding created CXF-6373:
------------------------------

             Summary: CompletionCallback can not get the Throwable if error occurs in other
interceptor (no serviceinvokerInterceptor)
                 Key: CXF-6373
                 URL: https://issues.apache.org/jira/browse/CXF-6373
             Project: CXF
          Issue Type: Bug
          Components: JAX-RS
    Affects Versions: 2.7.15, 3.0.4, 3.0.3
            Reporter: iris ding


//Resource class
@Path("resource")
public class Resource {

   private static final AsyncResponseBlockingQueue[] step = {
           new AsyncResponseBlockingQueue(1),
           new AsyncResponseBlockingQueue(1),
           new AsyncResponseBlockingQueue(1)};

   @GET
   @Path("suspend")
   public void suspend(@Suspended AsyncResponse asyncResponse) {
      step[0].add(asyncResponse);
	  }
	  
   @GET
   @Path("register")
   public String registerObject(@QueryParam("step") String step) {
      AsyncResponse async = takeAsyncResponse(step);
      boolean b = async.register(new MyCompletionCallback()).isEmpty();
      addResponse(async, step);
      return b ? TRUE : FALSE;
   }
   
   @GET
   @Path("exception")
   public String throwExceptionOnAsyncResponse(
           @QueryParam("step") String step) {
      System.out.println("********throwExceptionOnAsyncResponse");
      AsyncResponse async = takeAsyncResponse(step);
      System.out.println("*****async is not null: " + async);
      boolean b = async.resume(new ExceptionThrowingStringBean(
              "throw exception"));
      System.out.println("execuet finished for resume!!!");
      addResponse(async, step);
      return b ? TRUE : FALSE;
   }
   }
   
///////  StringBean
   public class StringBean {
   private String header;

   public String get() {
      return header;
   }

   public void set(String header) {
      this.header = header;
   }

   @Override
   public String toString() {
      return "StringBean. To get a value, use rather #get() method.";
   }

   public StringBean(String header) {
      super();
      this.header = header;
   }
}
/////// Throw Exception here
 public class ExceptionThrowingStringBean extends StringBean {
   public ExceptionThrowingStringBean(String header) {
      super(header);
   }

   @Override
   public String get() {
      throw new RuntimeException(new IOException(super.get()));
   }

}

////// Register a provider to deal with StringBean, 
// This cause we have an exception thrown in JaxrsOutInterceptor

@Provider
public class StringBeanEntityProvider implements MessageBodyReader<StringBean>,
        MessageBodyWriter<StringBean> {

   @Override
   public boolean isWriteable(Class<?> type, Type genericType,
                              Annotation[] annotations, MediaType mediaType) {
      return StringBean.class.isAssignableFrom(type);
   }

   @Override
   public long getSize(StringBean t, Class<?> type, Type genericType,
                       Annotation[] annotations, MediaType mediaType) {
      return t.get().length();
   }

   @Override
   public void writeTo(StringBean t, Class<?> type, Type genericType,
                       Annotation[] annotations, MediaType mediaType,
                       MultivaluedMap<String, Object> httpHeaders,
                       OutputStream entityStream) throws IOException,
           WebApplicationException {
      entityStream.write(t.get().getBytes());
   }

   @Override
   public boolean isReadable(Class<?> type, Type genericType,
                             Annotation[] annotations, MediaType mediaType) {
      return isWriteable(type, genericType, annotations, mediaType);
   }

   @Override
   public StringBean readFrom(Class<StringBean> type, Type genericType,
                              Annotation[] annotations, MediaType mediaType,
                              MultivaluedMap<String, String> httpHeaders, InputStream
entityStream)
           throws IOException, WebApplicationException {
      String stream = JaxrsUtil.readFromStream(entityStream);
      StringBean bean = new StringBean(stream);
      return bean;
   }

}

//////  Need to get the exception throwed from ExceptionThrowingStringBean.get() method in
this callback


public class MyCompletionCallback implements CompletionCallback {

   private static String throwableName;
   public static final String NULL = "NULL";
   public static final String NONAME = "No name has been set yet";

   @Override
   public void onComplete(Throwable throwable) {
	   
      throwableName = throwable == null ? NULL : throwable.getClass()
              .getName();
   }

   public static final String getLastThrowableName() {
      return throwableName;
   }

   public static final void resetLastThrowableName() {
      throwableName = NONAME;
   }

}




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