//
   //  ========================================================================
   //  Copyright (c) 1995-2016 Mort Bay Consulting Pty. Ltd.
   //  ------------------------------------------------------------------------
   //  All rights reserved. This program and the accompanying materials
   //  are made available under the terms of the Eclipse Public License v1.0
   //  and Apache License v2.0 which accompanies this distribution.
   //
   //      The Eclipse Public License is available at
  //      http://www.eclipse.org/legal/epl-v10.html
  //
  //      The Apache License v2.0 is available at
  //      http://www.opensource.org/licenses/apache2.0.php
  //
  //  You may elect to redistribute this code under either of these licenses.
  //  ========================================================================
  //
  
  package org.eclipse.jetty.websocket.jsr356.encoders;
  
  import java.util.concurrent.ExecutionException;
  import java.util.concurrent.Future;
  import java.util.concurrent.TimeUnit;
  import java.util.concurrent.TimeoutException;
  
  import javax.websocket.Encoder;
  
  /**
   * A <code>Future&lt;Void&gt;</code> that is already failed as a result of an Encode error
   */
  public class EncodeFailedFuture implements Future<Void>
  {
      private final String msg;
      private final Throwable cause;
  
      public EncodeFailedFuture(Object data, Encoder encoder, Class<?> encoderType, Throwable cause)
      {
          this.msg = String.format("Unable to encode %s using %s as %s",data.getClass().getName(),encoder.getClass().getName(),encoderType.getName());
          this.cause = cause;
      }
  
      @Override
      public boolean cancel(boolean mayInterruptIfRunning)
      {
          return false;
      }
  
      @Override
      public Void get() throws InterruptedException, ExecutionException
      {
          throw new ExecutionException(msg,cause);
      }
  
      @Override
      public Void get(long timeout, TimeUnit unit) throws InterruptedException, ExecutionException, TimeoutException
      {
          throw new ExecutionException(msg,cause);
      }
  
      @Override
      public boolean isCancelled()
      {
          return false;
      }
  
      @Override
      public boolean isDone()
      {
          return true;
      }
  }