[735] | 1 | #region License Information
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| 2 | /* HeuristicLab
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| 3 | * Copyright (C) 2002-2008 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
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| 4 | *
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| 5 | * This file is part of HeuristicLab.
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| 6 | *
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| 7 | * HeuristicLab is free software: you can redistribute it and/or modify
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| 8 | * it under the terms of the GNU General Public License as published by
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| 9 | * the Free Software Foundation, either version 3 of the License, or
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| 10 | * (at your option) any later version.
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| 11 | *
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| 12 | * HeuristicLab is distributed in the hope that it will be useful,
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| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 15 | * GNU General Public License for more details.
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| 16 | *
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| 17 | * You should have received a copy of the GNU General Public License
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| 18 | * along with HeuristicLab. If not, see <http://www.gnu.org/licenses/>.
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| 19 | */
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| 20 | #endregion
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| 21 |
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| 22 | using System;
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[714] | 23 | using System.Collections.Generic;
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| 24 | using System.Linq;
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| 25 | using System.Text;
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[768] | 26 | using HeuristicLab.Hive.Client.ExecutionEngine;
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[735] | 27 | using HeuristicLab.Hive.Client.Common;
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[768] | 28 | using System.Threading;
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[770] | 29 | using System.Reflection;
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| 30 | using System.Diagnostics;
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| 31 | using System.Security.Permissions;
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| 32 | using System.Security.Policy;
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| 33 | using System.Security;
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[790] | 34 | using HeuristicLab.Hive.Client.Communication;
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[793] | 35 | using HeuristicLab.Hive.Contracts.BusinessObjects;
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| 36 | using HeuristicLab.Hive.Contracts;
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[804] | 37 | using System.Runtime.Remoting.Messaging;
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[816] | 38 | using HeuristicLab.PluginInfrastructure;
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[843] | 39 | using System.ServiceModel;
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| 40 | using System.ServiceModel.Description;
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[919] | 41 | using HeuristicLab.Hive.Client.Core.ClientConsoleService;
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[932] | 42 | using HeuristicLab.Hive.Client.Core.ConfigurationManager;
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[993] | 43 | using HeuristicLab.Hive.Client.Communication.ServerService;
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[1001] | 44 | using HeuristicLab.Hive.JobBase;
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[1364] | 45 | using HeuristicLab.Hive.Client.Core.JobStorage;
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[714] | 46 |
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| 47 | namespace HeuristicLab.Hive.Client.Core {
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[1132] | 48 | /// <summary>
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| 49 | /// The core component of the Hive Client
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| 50 | /// </summary>
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[2591] | 51 | public class Core : MarshalByRefObject {
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[1368] | 52 | public static bool abortRequested { get; set; }
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[1719] | 53 | private bool currentlyFetching = false;
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[1005] | 54 |
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[1449] | 55 | private Dictionary<Guid, Executor> engines = new Dictionary<Guid, Executor>();
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| 56 | private Dictionary<Guid, AppDomain> appDomains = new Dictionary<Guid, AppDomain>();
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| 57 | private Dictionary<Guid, Job> jobs = new Dictionary<Guid, Job>();
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| 58 |
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[923] | 59 | private WcfService wcfService;
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[1097] | 60 | private Heartbeat beat;
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[2591] | 61 |
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[1132] | 62 | /// <summary>
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| 63 | /// Main Method for the client
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| 64 | /// </summary>
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[2591] | 65 | public void Start() {
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[1368] | 66 | abortRequested = false;
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[1371] | 67 | Logging.Instance.Info(this.ToString(), "Hive Client started");
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[901] | 68 | ClientConsoleServer server = new ClientConsoleServer();
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| 69 | server.StartClientConsoleServer(new Uri("net.tcp://127.0.0.1:8000/ClientConsole/"));
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[843] | 70 |
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[932] | 71 | ConfigManager manager = ConfigManager.Instance;
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[908] | 72 | manager.Core = this;
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[1959] | 73 |
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| 74 |
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[2591] | 75 |
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[1132] | 76 | //Register all Wcf Service references
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[923] | 77 | wcfService = WcfService.Instance;
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[1036] | 78 | wcfService.LoginCompleted += new EventHandler<LoginCompletedEventArgs>(wcfService_LoginCompleted);
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[1379] | 79 | wcfService.SendJobCompleted += new EventHandler<SendJobCompletedEventArgs>(wcfService_SendJobCompleted);
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| 80 | wcfService.StoreFinishedJobResultCompleted += new EventHandler<StoreFinishedJobResultCompletedEventArgs>(wcfService_StoreFinishedJobResultCompleted);
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| 81 | wcfService.ProcessSnapshotCompleted += new EventHandler<ProcessSnapshotCompletedEventArgs>(wcfService_ProcessSnapshotCompleted);
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[1036] | 82 | wcfService.ConnectionRestored += new EventHandler(wcfService_ConnectionRestored);
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| 83 | wcfService.ServerChanged += new EventHandler(wcfService_ServerChanged);
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[1081] | 84 | wcfService.Connected += new EventHandler(wcfService_Connected);
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[1132] | 85 | //Recover Server IP and Port from the Settings Framework
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[2591] | 86 | ConnectionContainer cc = ConfigManager.Instance.GetServerIPAndPort();
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[2025] | 87 | if (cc.IPAdress != String.Empty && cc.Port != 0)
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| 88 | wcfService.SetIPAndPort(cc.IPAdress, cc.Port);
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| 89 |
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| 90 | if (UptimeManager.Instance.isOnline())
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| 91 | wcfService.Connect();
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[2591] | 92 |
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[1132] | 93 | //Initialize the heartbeat
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[1097] | 94 | beat = new Heartbeat { Interval = 10000 };
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[2591] | 95 | beat.StartHeartbeat();
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[841] | 96 |
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[735] | 97 | MessageQueue queue = MessageQueue.GetInstance();
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[2591] | 98 |
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[1340] | 99 | //Main processing loop
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| 100 | //Todo: own thread for message handling
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[1368] | 101 | //Rly?!
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| 102 | while (!abortRequested) {
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[2588] | 103 | MessageContainer container = queue.GetMessage();
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[768] | 104 | DetermineAction(container);
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[735] | 105 | }
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[1481] | 106 | Console.WriteLine("ended!");
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[2591] | 107 | }
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[768] | 108 |
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[1132] | 109 | /// <summary>
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| 110 | /// Reads and analyzes the Messages from the MessageQueue and starts corresponding actions
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| 111 | /// </summary>
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| 112 | /// <param name="container">The Container, containing the message</param>
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[2588] | 113 | private void DetermineAction(MessageContainer container) {
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| 114 | Logging.Instance.Info(this.ToString(), "Message: " + container.Message.ToString() + " for job: " + container.JobId);
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[779] | 115 | switch (container.Message) {
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[1132] | 116 | //Server requests to abort a job
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[2588] | 117 | case MessageContainer.MessageType.AbortJob:
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[2591] | 118 | if (engines.ContainsKey(container.JobId))
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[1830] | 119 | engines[container.JobId].Abort();
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| 120 | else
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| 121 | Logging.Instance.Error(this.ToString(), "AbortJob: Engine doesn't exist");
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[779] | 122 | break;
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[1132] | 123 | //Job has been successfully aborted
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[2025] | 124 |
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| 125 |
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| 126 | case MessageContainer.MessageType.JobAborted:
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[2588] | 127 | //todo: thread this
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[2591] | 128 | lock (engines) {
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[1830] | 129 | Guid jobId = new Guid(container.JobId.ToString());
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[2591] | 130 | if (engines.ContainsKey(jobId)) {
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[1830] | 131 | appDomains[jobId].UnhandledException -= new UnhandledExceptionEventHandler(appDomain_UnhandledException);
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| 132 | AppDomain.Unload(appDomains[jobId]);
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| 133 | appDomains.Remove(jobId);
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| 134 | engines.Remove(jobId);
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| 135 | jobs.Remove(jobId);
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| 136 | GC.Collect();
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| 137 | } else
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| 138 | Logging.Instance.Error(this.ToString(), "JobAbort: Engine doesn't exist");
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[1775] | 139 | }
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[779] | 140 | break;
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[2591] | 141 |
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| 142 |
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[1132] | 143 | //Request a Snapshot from the Execution Engine
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[2588] | 144 | case MessageContainer.MessageType.RequestSnapshot:
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[2591] | 145 | if (engines.ContainsKey(container.JobId))
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[1830] | 146 | engines[container.JobId].RequestSnapshot();
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| 147 | else
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| 148 | Logging.Instance.Error(this.ToString(), "RequestSnapshot: Engine doesn't exist");
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[779] | 149 | break;
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[2591] | 150 |
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| 151 |
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[1132] | 152 | //Snapshot is ready and can be sent back to the Server
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[2588] | 153 | case MessageContainer.MessageType.SnapshotReady:
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[2591] | 154 | ThreadPool.QueueUserWorkItem(new WaitCallback(GetSnapshot), container.JobId);
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[779] | 155 | break;
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[2591] | 156 |
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| 157 |
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[1132] | 158 | //Pull a Job from the Server
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[2588] | 159 | case MessageContainer.MessageType.FetchJob:
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[1719] | 160 | if (!currentlyFetching) {
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| 161 | wcfService.SendJobAsync(ConfigManager.Instance.GetClientInfo().Id);
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[1775] | 162 | currentlyFetching = true;
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[2588] | 163 | } else
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| 164 | Logging.Instance.Info(this.ToString(), "Currently fetching, won't fetch this time!");
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[811] | 165 | break;
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[2025] | 166 |
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| 167 |
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[1132] | 168 | //A Job has finished and can be sent back to the server
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[2588] | 169 | case MessageContainer.MessageType.FinishedJob:
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[2591] | 170 | ThreadPool.QueueUserWorkItem(new WaitCallback(GetFinishedJob), container.JobId);
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| 171 | break;
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[2068] | 172 |
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[2591] | 173 |
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[2068] | 174 | //When the timeslice is up
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[2025] | 175 | case MessageContainer.MessageType.UptimeLimitDisconnect:
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| 176 | Logging.Instance.Info(this.ToString(), "Uptime Limit reached, storing jobs and sending them back");
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[2063] | 177 |
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| 178 | //check if there are running jobs
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| 179 | if (engines.Count > 0) {
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| 180 | //make sure there is no more fetching of jobs while the snapshots get processed
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| 181 | currentlyFetching = true;
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| 182 | //request a snapshot of each running job
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| 183 | foreach (KeyValuePair<Guid, Executor> kvp in engines) {
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| 184 | kvp.Value.RequestSnapshot();
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| 185 | }
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[2591] | 186 |
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[2063] | 187 | } else {
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| 188 | //Disconnect afterwards
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| 189 | WcfService.Instance.Disconnect();
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| 190 | }
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[2025] | 191 | break;
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[2591] | 192 |
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| 193 |
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[1132] | 194 | //Hard shutdown of the client
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[1085] | 195 | case MessageContainer.MessageType.Shutdown:
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[1481] | 196 | lock (engines) {
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[1830] | 197 | foreach (KeyValuePair<Guid, AppDomain> kvp in appDomains) {
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| 198 | appDomains[kvp.Key].UnhandledException -= new UnhandledExceptionEventHandler(appDomain_UnhandledException);
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[1481] | 199 | AppDomain.Unload(kvp.Value);
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[1830] | 200 | }
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[1481] | 201 | }
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[1368] | 202 | abortRequested = true;
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[1097] | 203 | beat.StopHeartBeat();
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[1635] | 204 | WcfService.Instance.Logout(ConfigManager.Instance.GetClientInfo().Id);
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[1085] | 205 | break;
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[779] | 206 | }
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| 207 | }
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[790] | 208 |
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[1132] | 209 | //Asynchronous Threads for interaction with the Execution Engine
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[923] | 210 | #region Async Threads for the EE
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[2591] | 211 |
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[2068] | 212 | /// <summary>
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| 213 | /// serializes the finished job and submits it to the server. If, at the time, a network connection is unavailable, the Job gets stored on the disk.
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| 214 | /// once the connection gets reestablished, the job gets submitted
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| 215 | /// </summary>
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| 216 | /// <param name="jobId"></param>
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[811] | 217 | private void GetFinishedJob(object jobId) {
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[2588] | 218 | Guid jId = (Guid)jobId;
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| 219 | Logging.Instance.Info(this.ToString(), "Getting the finished job with id: " + jId);
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[1368] | 220 | try {
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[1830] | 221 | if (!engines.ContainsKey(jId)) {
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| 222 | Logging.Instance.Error(this.ToString(), "GetFinishedJob: Engine doesn't exist");
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| 223 | return;
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| 224 | }
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[2591] | 225 |
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[1368] | 226 | byte[] sJob = engines[jId].GetFinishedJob();
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[1005] | 227 |
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[1368] | 228 | if (WcfService.Instance.ConnState == NetworkEnum.WcfConnState.Loggedin) {
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[2588] | 229 | Logging.Instance.Info(this.ToString(), "Sending the finished job with id: " + jId);
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[1449] | 230 | wcfService.StoreFinishedJobResultAsync(ConfigManager.Instance.GetClientInfo().Id,
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[1368] | 231 | jId,
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| 232 | sJob,
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| 233 | 1,
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| 234 | null,
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| 235 | true);
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[1830] | 236 | } else {
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[2588] | 237 | Logging.Instance.Info(this.ToString(), "Storing the finished job with id: " + jId + " to hdd");
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[1368] | 238 | JobStorageManager.PersistObjectToDisc(wcfService.ServerIP, wcfService.ServerPort, jId, sJob);
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[1379] | 239 | lock (engines) {
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[1830] | 240 | appDomains[jId].UnhandledException -= new UnhandledExceptionEventHandler(appDomain_UnhandledException);
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[1368] | 241 | AppDomain.Unload(appDomains[jId]);
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| 242 | appDomains.Remove(jId);
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| 243 | engines.Remove(jId);
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| 244 | jobs.Remove(jId);
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| 245 | }
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| 246 | }
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[1219] | 247 | }
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[1368] | 248 | catch (InvalidStateException ise) {
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[1371] | 249 | Logging.Instance.Error(this.ToString(), "Exception: ", ise);
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[1368] | 250 | }
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[804] | 251 | }
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| 252 |
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[811] | 253 | private void GetSnapshot(object jobId) {
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[2588] | 254 | Logging.Instance.Info(this.ToString(), "Fetching a snapshot for job " + jobId);
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[1449] | 255 | Guid jId = (Guid)jobId;
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[816] | 256 | byte[] obj = engines[jId].GetSnapshot();
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[2588] | 257 | Logging.Instance.Info(this.ToString(), "BEGIN: Sending snapshot sync");
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[1812] | 258 | wcfService.ProcessSnapshotSync(ConfigManager.Instance.GetClientInfo().Id,
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[1147] | 259 | jId,
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| 260 | obj,
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| 261 | engines[jId].Progress,
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[1812] | 262 | null);
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[2588] | 263 | Logging.Instance.Info(this.ToString(), "END: Sended snapshot sync");
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[2063] | 264 | //Uptime Limit reached, now is a good time to destroy this jobs.
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| 265 | if (!UptimeManager.Instance.isOnline()) {
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[2591] | 266 | KillAppDomain(jId);
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[2063] | 267 | //Still anything running?
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| 268 | if (engines.Count == 0)
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| 269 | WcfService.Instance.Disconnect();
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[2591] | 270 |
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[2063] | 271 | } else {
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[2588] | 272 | Logging.Instance.Info(this.ToString(), "Restarting the job" + jobId);
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[2063] | 273 | engines[jId].StartOnlyJob();
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| 274 | }
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[811] | 275 | }
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| 276 |
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[923] | 277 | #endregion
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| 278 |
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[1132] | 279 | //Eventhandlers for the communication with the wcf Layer
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[923] | 280 | #region wcfService Events
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[2068] | 281 | /// <summary>
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| 282 | /// Login has returned
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| 283 | /// </summary>
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| 284 | /// <param name="sender"></param>
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| 285 | /// <param name="e"></param>
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[923] | 286 | void wcfService_LoginCompleted(object sender, LoginCompletedEventArgs e) {
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| 287 | if (e.Result.Success) {
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[2063] | 288 | currentlyFetching = false;
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[2591] | 289 | Logging.Instance.Info(this.ToString(), "Login completed to Hive Server @ " + DateTime.Now);
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[923] | 290 | } else
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[1371] | 291 | Logging.Instance.Error(this.ToString(), e.Result.StatusMessage);
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[2591] | 292 | }
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[923] | 293 |
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[2068] | 294 | /// <summary>
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| 295 | /// A new Job from the wcfService has been received and will be started within a AppDomain.
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| 296 | /// </summary>
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| 297 | /// <param name="sender"></param>
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| 298 | /// <param name="e"></param>
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[1379] | 299 | void wcfService_SendJobCompleted(object sender, SendJobCompletedEventArgs e) {
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[2588] | 300 | Logging.Instance.Info(this.ToString(), "Received new job with id " + e.Result.Job.Id);
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[1755] | 301 | if (e.Result.StatusMessage != ApplicationConstants.RESPONSE_COMMUNICATOR_NO_JOBS_LEFT) {
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[1487] | 302 | bool sandboxed = false;
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[1602] | 303 | List<byte[]> files = new List<byte[]>();
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[2588] | 304 | Logging.Instance.Info(this.ToString(), "Fetching plugins for job " + e.Result.Job.Id);
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[2117] | 305 | foreach (CachedHivePluginInfo plugininfo in PluginCache.Instance.GetPlugins(e.Result.Job.PluginsNeeded))
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[1936] | 306 | files.AddRange(plugininfo.PluginFiles);
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[2588] | 307 | Logging.Instance.Info(this.ToString(), "Plugins fetched for job " + e.Result.Job.Id);
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[2591] | 308 | AppDomain appDomain = HeuristicLab.PluginInfrastructure.Sandboxing.SandboxManager.CreateAndInitSandbox(e.Result.Job.Id.ToString(), files);
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[997] | 309 | appDomain.UnhandledException += new UnhandledExceptionEventHandler(appDomain_UnhandledException);
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[2082] | 310 | lock (engines) {
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[2117] | 311 | if (!jobs.ContainsKey(e.Result.Job.Id)) {
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| 312 | jobs.Add(e.Result.Job.Id, e.Result.Job);
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| 313 | appDomains.Add(e.Result.Job.Id, appDomain);
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[2588] | 314 | Logging.Instance.Info(this.ToString(), "Creating AppDomain");
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[1033] | 315 | Executor engine = (Executor)appDomain.CreateInstanceAndUnwrap(typeof(Executor).Assembly.GetName().Name, typeof(Executor).FullName);
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[2588] | 316 | Logging.Instance.Info(this.ToString(), "Created AppDomain");
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[2117] | 317 | engine.JobId = e.Result.Job.Id;
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[2588] | 318 | engine.Queue = MessageQueue.GetInstance();
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| 319 | Logging.Instance.Info(this.ToString(), "Starting Engine for job " + e.Result.Job.Id);
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[2117] | 320 | engine.Start(e.Data);
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| 321 | engines.Add(e.Result.Job.Id, engine);
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[798] | 322 |
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[1033] | 323 | ClientStatusInfo.JobsFetched++;
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[798] | 324 |
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[1033] | 325 | Debug.WriteLine("Increment FetchedJobs to:" + ClientStatusInfo.JobsFetched);
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| 326 | }
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[2591] | 327 | }
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[2588] | 328 | } else
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| 329 | Logging.Instance.Info(this.ToString(), "No more jobs left!");
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[1775] | 330 | currentlyFetching = false;
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[798] | 331 | }
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[1379] | 332 |
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[2068] | 333 | /// <summary>
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| 334 | /// A finished job has been stored on the server
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| 335 | /// </summary>
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| 336 | /// <param name="sender"></param>
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| 337 | /// <param name="e"></param>
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[1379] | 338 | void wcfService_StoreFinishedJobResultCompleted(object sender, StoreFinishedJobResultCompletedEventArgs e) {
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[2588] | 339 | Logging.Instance.Info(this.ToString(), "Job submitted with id " + e.Result.JobId);
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[2068] | 340 | KillAppDomain(e.Result.JobId);
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[2591] | 341 | if (e.Result.Success) {
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[1589] | 342 | ClientStatusInfo.JobsProcessed++;
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[2591] | 343 | Debug.WriteLine("ProcessedJobs to:" + ClientStatusInfo.JobsProcessed);
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| 344 | } else {
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[1589] | 345 | Logging.Instance.Error(this.ToString(), "Sending of job " + e.Result.JobId + " failed, job has been wasted. Message: " + e.Result.StatusMessage);
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[840] | 346 | }
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[779] | 347 | }
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[908] | 348 |
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[2068] | 349 | /// <summary>
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| 350 | /// A snapshot has been stored on the server
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| 351 | /// </summary>
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| 352 | /// <param name="sender"></param>
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| 353 | /// <param name="e"></param>
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[1379] | 354 | void wcfService_ProcessSnapshotCompleted(object sender, ProcessSnapshotCompletedEventArgs e) {
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[1589] | 355 | Logging.Instance.Info(this.ToString(), "Snapshot " + e.Result.JobId + " has been transmitted according to plan.");
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[1379] | 356 | }
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| 357 |
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[2068] | 358 | /// <summary>
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| 359 | /// The server has been changed. All Appdomains and Jobs must be aborted!
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| 360 | /// </summary>
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| 361 | /// <param name="sender"></param>
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| 362 | /// <param name="e"></param>
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[932] | 363 | void wcfService_ServerChanged(object sender, EventArgs e) {
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[1371] | 364 | Logging.Instance.Info(this.ToString(), "ServerChanged has been called");
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[1379] | 365 | lock (engines) {
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[2068] | 366 | foreach (KeyValuePair<Guid, Executor> entries in engines) {
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| 367 | engines[entries.Key].Abort();
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| 368 | //appDomains[entries.Key].UnhandledException -= new UnhandledExceptionEventHandler(appDomain_UnhandledException);
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| 369 | //AppDomain.Unload(appDomains[entries.Key]);
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[1830] | 370 | }
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[2068] | 371 | //appDomains = new Dictionary<Guid, AppDomain>();
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| 372 | //engines = new Dictionary<Guid, Executor>();
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| 373 | //jobs = new Dictionary<Guid, Job>();
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[1081] | 374 | }
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| 375 | }
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| 376 |
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[2068] | 377 | /// <summary>
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| 378 | /// Connnection to the server has been estabilshed => Login and Send the persistet Jobs from the harddisk.
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| 379 | /// </summary>
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| 380 | /// <param name="sender"></param>
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| 381 | /// <param name="e"></param>
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[1081] | 382 | void wcfService_Connected(object sender, EventArgs e) {
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[2591] | 383 | wcfService.LoginSync(ConfigManager.Instance.GetClientInfo());
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[1364] | 384 | JobStorageManager.CheckAndSubmitJobsFromDisc();
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[2068] | 385 | currentlyFetching = false;
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[932] | 386 | }
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| 387 |
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[1097] | 388 | //this is a little bit tricky -
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[1083] | 389 | void wcfService_ConnectionRestored(object sender, EventArgs e) {
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[2591] | 390 | Logging.Instance.Info(this.ToString(), "Reconnected to old server - checking currently running appdomains");
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[1097] | 391 |
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[1449] | 392 | foreach (KeyValuePair<Guid, Executor> execKVP in engines) {
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[1097] | 393 | if (!execKVP.Value.Running && execKVP.Value.CurrentMessage == MessageContainer.MessageType.NoMessage) {
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[1371] | 394 | Logging.Instance.Info(this.ToString(), "Checking for JobId: " + execKVP.Value.JobId);
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[1097] | 395 | Thread finThread = new Thread(new ParameterizedThreadStart(GetFinishedJob));
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| 396 | finThread.Start(execKVP.Value.JobId);
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| 397 | }
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| 398 | }
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[1083] | 399 | }
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[932] | 400 |
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[923] | 401 | #endregion
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| 402 |
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[1449] | 403 | public Dictionary<Guid, Executor> GetExecutionEngines() {
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[908] | 404 | return engines;
|
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| 405 | }
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[997] | 406 |
|
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| 407 | void appDomain_UnhandledException(object sender, UnhandledExceptionEventArgs e) {
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[2591] | 408 | Logging.Instance.Error(this.ToString(), "Exception in AppDomain: " + e.ExceptionObject.ToString());
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[997] | 409 | }
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[1755] | 410 |
|
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[2591] | 411 | internal Dictionary<Guid, Job> GetJobs() {
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[1755] | 412 | return jobs;
|
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| 413 | }
|
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[2068] | 414 |
|
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| 415 | /// <summary>
|
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| 416 | /// Kill a appdomain with a specific id.
|
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| 417 | /// </summary>
|
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| 418 | /// <param name="id">the GUID of the job</param>
|
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| 419 | private void KillAppDomain(Guid id) {
|
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[2588] | 420 | Logging.Instance.Info(this.ToString(), "Shutting down Appdomain for Job " + id);
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[2068] | 421 | lock (engines) {
|
---|
| 422 | try {
|
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| 423 | appDomains[id].UnhandledException -= new UnhandledExceptionEventHandler(appDomain_UnhandledException);
|
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| 424 | AppDomain.Unload(appDomains[id]);
|
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| 425 | appDomains.Remove(id);
|
---|
| 426 | engines.Remove(id);
|
---|
| 427 | jobs.Remove(id);
|
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[2591] | 428 | }
|
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[2068] | 429 | catch (Exception ex) {
|
---|
| 430 | Logging.Instance.Error(this.ToString(), "Exception when unloading the appdomain: ", ex);
|
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| 431 | }
|
---|
| 432 | }
|
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| 433 | GC.Collect();
|
---|
| 434 | }
|
---|
[714] | 435 | }
|
---|
| 436 | }
|
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