Server.java 文件源码

/**
 * Setup response for the IPC Call.
 * 
 * @param response buffer to serialize the response into
 * @param call {@link Call} to which we are setting up the response
 * @param status {@link Status} of the IPC call
 * @param rv return value for the IPC Call, if the call was successful
 * @param errorClass error class, if the the call failed
 * @param error error message, if the call failed
 * @throws IOException
 */
private void setupResponse(ByteArrayOutputStream response, 
                           Call call, Status status, 
                           Writable rv, String errorClass, String error) 
throws IOException {
  response.reset();
  DataOutputStream out = new DataOutputStream(response);
  out.writeInt(call.id);                // write call id
  out.writeInt(status.state);           // write status

  if (status == Status.SUCCESS) {
    rv.write(out);
  } else {
    WritableUtils.writeString(out, errorClass);
    WritableUtils.writeString(out, error);
  }
  /*if (call.connection.useWrap) {
    wrapWithSasl(response, call);
  }*/
  call.setResponse(ByteBuffer.wrap(response.toByteArray()));
}