WriteResponseFuture.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

package gobblin.writer;

import java.util.concurrent.ExecutionException;
import java.util.concurrent.Future;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.TimeoutException;


/**
 * Wraps a Future<InnerType> and implements a Future<WriteResponse> when provided with a wrapper class
 */
public class WriteResponseFuture<InnerType> implements Future<WriteResponse> {

  private final Future<InnerType> _innerFuture;
  private final WriteResponseMapper<InnerType> _writeResponseMapper;

  public WriteResponseFuture(Future<InnerType> innerFuture, WriteResponseMapper<InnerType> writeResponseMapper) {
    _innerFuture = innerFuture;
    _writeResponseMapper = writeResponseMapper;
  }

  @Override
  public boolean cancel(boolean mayInterruptIfRunning) {
    return _innerFuture.cancel(mayInterruptIfRunning);
  }

  @Override
  public boolean isCancelled() {
    return _innerFuture.isCancelled();
  }

  @Override
  public boolean isDone() {
    return _innerFuture.isDone();
  }

  @Override
  public WriteResponse get()
      throws InterruptedException, ExecutionException {
    return _writeResponseMapper.wrap(_innerFuture.get());
  }

  @Override
  public WriteResponse get(long timeout, TimeUnit unit)
      throws InterruptedException, ExecutionException, TimeoutException {
    return _writeResponseMapper.wrap(_innerFuture.get(timeout, unit));
  }
}