| // 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. |
| |
| using System; |
| using Org.Apache.REEF.Utilities.Logging; |
| |
| namespace Org.Apache.REEF.Common.Context |
| { |
| public sealed class ContextMessage |
| { |
| private static readonly Logger LOGGER = Logger.GetLogger(typeof(ContextMessage)); |
| private readonly string _messageSourcId; |
| private readonly byte[] _bytes; |
| |
| private ContextMessage(string messageSourceId, byte[] bytes) |
| { |
| _messageSourcId = messageSourceId; |
| _bytes = bytes; |
| } |
| |
| public string MessageSourceId |
| { |
| get { return _messageSourcId; } |
| } |
| |
| public byte[] Bytes |
| { |
| get { return _bytes; } |
| } |
| |
| /// <summary> |
| /// construct a new ContextMessage with the given content. |
| /// </summary> |
| /// <param name="messageSourceId">The message's sourceID. This will be accessible in the Driver for routing.</param> |
| /// <param name="bytes">The actual content of the message, serialized into a byte[]</param> |
| /// <returns>new ContextMessage with the given content.</returns> |
| public static ContextMessage From(string messageSourceId, byte[] bytes) |
| { |
| if (string.IsNullOrEmpty(messageSourceId)) |
| { |
| Org.Apache.REEF.Utilities.Diagnostics.Exceptions.Throw(new ArgumentNullException("messageSourceId"), LOGGER); |
| } |
| if (bytes == null) |
| { |
| Org.Apache.REEF.Utilities.Diagnostics.Exceptions.Throw(new ArgumentNullException("bytes"), LOGGER); |
| } |
| return new ContextMessage(messageSourceId, bytes); |
| } |
| } |
| } |