| /* |
| * 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.task; |
| |
| |
| import org.apache.reef.annotations.Provided; |
| import org.apache.reef.annotations.audience.EvaluatorSide; |
| import org.apache.reef.annotations.audience.Public; |
| import org.apache.reef.io.Message; |
| |
| /** |
| * A message sent from a Task to a Driver. |
| */ |
| @EvaluatorSide |
| @Public |
| @Provided |
| public final class TaskMessage implements Message { |
| |
| private final String messageSourceID; |
| private final byte[] theBytes; |
| |
| private TaskMessage(final String messageSourceID, final byte[] theBytes) { |
| this.messageSourceID = messageSourceID; |
| this.theBytes = theBytes; |
| } |
| |
| /** |
| * @param messageSourceID The message's sourceID. This will be accessible in the Driver for routing. |
| * @param theBytes The actual content of the message, serialized into a byte[] |
| * @return a new TaskMessage with the given content. |
| */ |
| public static TaskMessage from(final String messageSourceID, final byte[] theBytes) { |
| assert theBytes != null && messageSourceID != null; |
| return new TaskMessage(messageSourceID, theBytes); |
| } |
| |
| /** |
| * @return the message source identifier. |
| */ |
| public String getMessageSourceID() { |
| return this.messageSourceID; |
| } |
| |
| /** |
| * @return the message |
| */ |
| @Override |
| public byte[] get() { |
| return this.theBytes; |
| } |
| } |