| // 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.Collections.Generic; |
| using System.Globalization; |
| using System.Net; |
| using System.Threading; |
| using Org.Apache.REEF.Driver.Bridge; |
| using Org.Apache.REEF.Driver.Task; |
| using Org.Apache.REEF.Tang.Annotations; |
| using Org.Apache.REEF.Utilities; |
| using Org.Apache.REEF.Utilities.Logging; |
| |
| namespace Org.Apache.REEF.Examples.AllHandlers |
| { |
| /// <summary> |
| /// A sample implementation of TaskCompletedHandler |
| /// </summary> |
| public sealed class HelloTaskCompletedHandler : IObserver<ICompletedTask>, IHttpHandler |
| { |
| private static readonly Logger Logger = Logger.GetLogger(typeof(HelloTaskCompletedHandler)); |
| |
| private readonly IList<ICompletedTask> _completedTasks = new List<ICompletedTask>(); |
| |
| [Inject] |
| private HelloTaskCompletedHandler() |
| { |
| } |
| |
| /// <summary> |
| /// Sample code to print out a completed task's details. |
| /// </summary> |
| /// <param name="completedTask"></param> |
| public void OnNext(ICompletedTask completedTask) |
| { |
| Console.WriteLine("Received CompletedTask: {0}", completedTask.Id); |
| _completedTasks.Add(completedTask); |
| } |
| |
| public void OnError(Exception error) |
| { |
| throw new NotImplementedException(); |
| } |
| |
| public void OnCompleted() |
| { |
| throw new NotImplementedException(); |
| } |
| |
| public string GetSpecification() |
| { |
| return "CMD"; |
| } |
| |
| /// <summary> |
| /// It gets HTTP request and close the contexts after receiving all the completed tasks |
| /// </summary> |
| /// <param name="requet"></param> |
| /// <param name="resonse"></param> |
| public void OnHttpRequest(ReefHttpRequest requet, ReefHttpResponse resonse) |
| { |
| var msg = string.Format(CultureInfo.CurrentCulture, |
| "HelloTaskCompletedHandler OnHttpRequest: URL: {0}, QueryString: {1}, inputStream: {2}.", |
| requet.Url, requet.Querystring, ByteUtilities.ByteArraysToString(requet.InputStream)); |
| Logger.Log(Level.Info, msg); |
| resonse.Status = HttpStatusCode.OK; |
| while (_completedTasks.Count != 2) |
| { |
| Thread.Sleep(1000); |
| Logger.Log(Level.Info, "_completedTasks received:" + _completedTasks.Count); |
| } |
| resonse.OutputStream = ByteUtilities.StringToByteArrays("Stopped!!!"); |
| foreach (var t in _completedTasks) |
| { |
| t.ActiveContext.Dispose(); |
| } |
| _completedTasks.Clear(); |
| } |
| } |
| } |