lang/java/reef-io/src/main/java/org/apache/reef/io/network/Message.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 org.apache.reef.io.network;

import org.apache.reef.wake.Identifier;

/**
 * Network message.
 *
 * @param <T>
 */
public interface Message<T> {

  /**
   * Gets a source identifier.
   *
   * @return an identifier
   */
  Identifier getSrcId();

  /**
   * Gets a destination identifier.
   *
   * @return an identifier
   */
  Identifier getDestId();

  /**
   * Gets data.
   *
   * @return an iterable of data objects
   */
  Iterable<T> getData();
}