| // 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 System.Threading; |
| using Org.Apache.REEF.Common.Tasks; |
| using Org.Apache.REEF.Common.Tasks.Events; |
| using Org.Apache.REEF.Tang.Annotations; |
| using Org.Apache.REEF.Utilities; |
| using Org.Apache.REEF.Utilities.Diagnostics; |
| using Org.Apache.REEF.Utilities.Logging; |
| |
| namespace Org.Apache.REEF.Tests.Functional.Messaging |
| { |
| /// <summary> |
| /// A Task that sends messages to the Driver and receives messages from the |
| /// Driver for testing. |
| /// </summary> |
| public class MessageTask : ITask, ITaskMessageSource, IDriverMessageHandler |
| { |
| private static readonly Logger Logger = Logger.GetLogger(typeof(MessageTask)); |
| |
| public const string MessageSend = "MESSAGE:TASK"; |
| |
| public const string MessageTaskSourceId = "MessageTaskSourceId"; |
| |
| public const string MessageSentToDriverLog = "Message sent to Driver from Task."; |
| public const string MessageReceivedFromDriverLog = "Message received from Driver in Task."; |
| |
| private readonly ManualResetEventSlim _messageFromDriverEvent = new ManualResetEventSlim(false); |
| private readonly TestMessageEventManager _messageManager; |
| |
| [Inject] |
| private MessageTask(TestMessageEventManager messageManager) |
| { |
| _messageManager = messageManager; |
| } |
| |
| public Optional<TaskMessage> Message |
| { |
| get |
| { |
| var defaultTaskMessage = TaskMessage.From( |
| MessageTaskSourceId, |
| ByteUtilities.StringToByteArrays(MessageSend)); |
| |
| Logger.Log(Level.Info, MessageSentToDriverLog); |
| _messageManager.OnTaskMessageSent(); |
| |
| return Optional<TaskMessage>.Of(defaultTaskMessage); |
| } |
| |
| set |
| { |
| } |
| } |
| |
| public byte[] Call(byte[] memento) |
| { |
| WaitHandle.WaitAll(new[] |
| { |
| _messageManager.IsContextMessageSentEvent, |
| _messageManager.IsTaskMessageSentEvent, |
| _messageFromDriverEvent.WaitHandle |
| }); |
| |
| return null; |
| } |
| |
| public void Handle(IDriverMessage value) |
| { |
| try |
| { |
| if (!value.Message.IsPresent()) |
| { |
| throw new Exception("Expecting message from Driver but got missing message."); |
| } |
| |
| var message = ByteUtilities.ByteArraysToString(value.Message.Value); |
| if (!message.Equals(MessageDriver.Message)) |
| { |
| Exceptions.Throw(new Exception("Unexpected driver message: " + message), |
| "Unexpected driver message received: " + message, |
| Logger); |
| } |
| else |
| { |
| Logger.Log(Level.Info, MessageReceivedFromDriverLog); |
| } |
| } |
| finally |
| { |
| _messageFromDriverEvent.Set(); |
| } |
| } |
| |
| public void Dispose() |
| { |
| } |
| } |
| } |