| // 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.Globalization; |
| using Org.Apache.REEF.Driver.Context; |
| using Org.Apache.REEF.Driver.Evaluator; |
| using Org.Apache.REEF.Tang.Annotations; |
| |
| namespace Org.Apache.REEF.Examples.AllHandlers |
| { |
| /// <summary> |
| /// A sample implementation of DriverRestartActiveContextHandler |
| /// </summary> |
| public class HelloDriverRestartActiveContextHandler : IObserver<IActiveContext> |
| { |
| [Inject] |
| private HelloDriverRestartActiveContextHandler() |
| { |
| } |
| |
| /// <summary> |
| /// It is called when receiving an active context |
| /// </summary> |
| /// <param name="activeContext"></param> |
| public void OnNext(IActiveContext activeContext) |
| { |
| Console.WriteLine( |
| string.Format( |
| CultureInfo.InvariantCulture, |
| "Active context {0} received after driver restart, from evaluator {1}", |
| activeContext.Id, |
| activeContext.EvaluatorId)); |
| |
| IEvaluatorDescriptor evaluatorDescriptor = activeContext.EvaluatorDescriptor; |
| string ipAddress = evaluatorDescriptor.NodeDescriptor.InetSocketAddress.Address.ToString(); |
| int port = evaluatorDescriptor.NodeDescriptor.InetSocketAddress.Port; |
| string hostName = evaluatorDescriptor.NodeDescriptor.HostName; |
| |
| Console.WriteLine( |
| string.Format( |
| CultureInfo.InvariantCulture, |
| "The running evaluator allocated by previous driver is assigned with {0} MB of memory and is running at ip: {1} and port {2}, with hostname {3}", |
| evaluatorDescriptor.Memory, |
| ipAddress, |
| port, |
| hostName)); |
| } |
| |
| public void OnError(Exception error) |
| { |
| throw new NotImplementedException(); |
| } |
| |
| public void OnCompleted() |
| { |
| throw new NotImplementedException(); |
| } |
| } |
| } |