1 | #region License Information
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2 | /* HeuristicLab
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3 | * Copyright (C) 2002-2010 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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23 | using System.Collections.Generic;
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24 | using HeuristicLab.Common;
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25 | using HeuristicLab.Clients.Common;
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26 | using HeuristicLab.Services.Hive.Common.ServiceContracts;
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27 | using HeuristicLab.Services.Hive.Common.DataTransfer;
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28 | using HeuristicLab.Services.Hive.Common;
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29 | using HeuristicLab.Clients.Hive.Slave.Properties;
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30 |
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31 | namespace HeuristicLab.Clients.Hive.Salve {
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32 |
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33 | /// <summary>
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34 | /// WcfService class is implemented as a Singleton and works as a communication Layer with the Server
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35 | /// </summary>
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36 | public class WcfService : MarshalByRefObject {
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37 | private static WcfService instance;
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38 | /// <summary>
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39 | /// Getter for the Instance of the WcfService
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40 | /// </summary>
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41 | /// <returns>the Instance of the WcfService class</returns>
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42 | public static WcfService Instance {
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43 | get {
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44 | if (instance == null) {
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45 | Logger.Debug("New WcfService Instance created");
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46 | instance = new WcfService();
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47 | }
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48 | return instance;
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49 | }
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50 | }
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51 |
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52 | public DateTime ConnectedSince { get; private set; }
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53 | public NetworkEnum.WcfConnState ConnState { get; private set; }
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54 |
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55 | public event EventHandler Connected;
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56 | public void OnConnected() {
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57 | var handler = Connected;
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58 | if (handler != null) handler(this, EventArgs.Empty);
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59 | }
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60 |
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61 | /// <summary>
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62 | /// Constructor
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63 | /// </summary>
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64 | private WcfService() {
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65 | ConnState = NetworkEnum.WcfConnState.Disconnected;
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66 | }
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67 |
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68 | /// <summary>
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69 | /// Connects with the Server, registers the events and fires the Connected (and quiet possibly the ConnectionRestored) Event.
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70 | /// </summary>
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71 | public void Connect(HeuristicLab.Services.Hive.Common.DataTransfer.Slave slaveInfo) {
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72 | using (Disposable<IHiveService> service = ServiceLocator.Instance.GetService()) {
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73 | try {
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74 | Logger.Debug("Starting the Connection Process");
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75 | ConnState = NetworkEnum.WcfConnState.Connected;
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76 | ConnectedSince = DateTime.Now;
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77 | service.Obj.Hello(Settings.Default.Guid, slaveInfo.Name, slaveInfo.Cores.Value, slaveInfo.Memory.Value);
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78 | OnConnected();
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79 | }
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80 | catch (Exception ex) {
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81 | HandleNetworkError(ex);
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82 | }
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83 | }
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84 | }
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85 |
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86 | /// <summary>
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87 | /// Disconnects the Slave from the Server
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88 | /// </summary>
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89 | public void Disconnect() {
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90 | using (Disposable<IHiveService> service = ServiceLocator.Instance.GetService()) {
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91 | try {
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92 | service.Obj.GoodBye();
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93 | ConnState = NetworkEnum.WcfConnState.Disconnected;
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94 | }
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95 | catch (Exception ex) {
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96 | HandleNetworkError(ex);
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97 | }
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98 | }
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99 | }
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100 |
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101 | /// <summary>
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102 | /// Network communication Error Handler - Every network error gets logged and the connection switches to faulted state
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103 | /// </summary>
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104 | /// <param name="e">The Exception</param>
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105 | private void HandleNetworkError(Exception e) {
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106 | ConnState = NetworkEnum.WcfConnState.Failed;
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107 | Logger.Error("Network exception occurred: " + e);
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108 | OnExceptionOccured(e);
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109 | }
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110 |
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111 | /// <summary>
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112 | /// Aquire a Job from the Server, return the Job
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113 | /// </summary>
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114 | public Job AquireJob() {
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115 | using (Disposable<IHiveService> service = ServiceLocator.Instance.GetService()) {
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116 | try {
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117 | Job job = service.Obj.AquireJob(Settings.Default.Guid);
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118 | return job;
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119 | }
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120 | catch (Exception ex) {
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121 | HandleNetworkError(ex);
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122 | return null;
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123 | }
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124 | }
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125 | }
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126 |
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127 | public JobData GetJobData(Guid jobId) {
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128 | using (Disposable<IHiveService> service = ServiceLocator.Instance.GetService()) {
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129 | try {
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130 | JobData jobData = service.Obj.GetJobData(jobId);
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131 | return jobData;
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132 | }
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133 | catch (Exception ex) {
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134 | HandleNetworkError(ex);
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135 | return null;
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136 | }
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137 | }
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138 | }
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139 |
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140 | /// <summary>
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141 | /// used on pause or if job finished to upload the job results
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142 | /// </summary>
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143 | /// <param name="job"></param>
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144 | /// <param name="jobData"></param>
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145 | public void UpdateJob(Job job, JobData jobData) {
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146 | using (Disposable<IHiveService> service = ServiceLocator.Instance.GetService()) {
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147 | try {
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148 | service.Obj.UpdateJob(job, jobData);
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149 | }
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150 | catch (Exception ex) {
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151 | HandleNetworkError(ex);
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152 | }
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153 | }
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154 | }
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155 |
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156 | public List<MessageContainer> SendHeartbeat(Heartbeat heartbeat) {
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157 | using (Disposable<IHiveService> service = ServiceLocator.Instance.GetService()) {
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158 | try {
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159 | List<MessageContainer> msg = service.Obj.Heartbeat(heartbeat);
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160 | return msg;
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161 | }
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162 | catch (Exception ex) {
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163 | HandleNetworkError(ex);
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164 | return null;
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165 | }
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166 | }
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167 | }
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168 |
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169 | public IEnumerable<PluginData> GetPluginDatas(List<Guid> pluginIds) {
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170 | using (Disposable<IHiveService> service = ServiceLocator.Instance.GetService()) {
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171 | try {
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172 | IEnumerable<PluginData> msg = service.Obj.GetPluginDatas(pluginIds);
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173 | return msg;
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174 | }
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175 | catch (Exception ex) {
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176 | HandleNetworkError(ex);
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177 | return null;
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178 | }
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179 | }
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180 | }
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181 |
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182 | public IEnumerable<Plugin> GetPlugins() {
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183 | using (Disposable<IHiveService> service = ServiceLocator.Instance.GetService()) {
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184 | try {
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185 | IEnumerable<Plugin> msg = service.Obj.GetPlugins();
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186 | return msg;
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187 | }
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188 | catch (Exception ex) {
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189 | HandleNetworkError(ex);
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190 | return null;
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191 | }
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192 | }
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193 | }
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194 |
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195 | public Guid AddChildJob(Guid parentJobId, Job job, JobData jobData) {
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196 | using (Disposable<IHiveService> service = ServiceLocator.Instance.GetService()) {
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197 | try {
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198 | Guid msg = service.Obj.AddChildJob(parentJobId, job, jobData);
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199 | return msg;
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200 | }
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201 | catch (Exception ex) {
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202 | HandleNetworkError(ex);
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203 | return new Guid();
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204 | }
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205 | }
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206 | }
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207 |
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208 | public IEnumerable<JobData> GetChildJobs(Guid? parentJobId) {
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209 | using (Disposable<IHiveService> service = ServiceLocator.Instance.GetService()) {
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210 | try {
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211 | IEnumerable<LightweightJob> msg = service.Obj.GetLightweightChildJobs(parentJobId, false, false);
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212 |
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213 | List<JobData> jobs = new List<JobData>();
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214 | foreach (LightweightJob ljob in msg)
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215 | jobs.Add(service.Obj.GetJobData(ljob.Id));
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216 |
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217 | return jobs;
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218 | }
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219 | catch (Exception ex) {
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220 | HandleNetworkError(ex);
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221 | return null;
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222 | }
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223 | }
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224 | }
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225 |
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226 | public void DeleteChildJobs(Guid jobId) {
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227 | using (Disposable<IHiveService> service = ServiceLocator.Instance.GetService()) {
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228 | try {
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229 | service.Obj.DeleteChildJobs(jobId);
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230 | }
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231 | catch (Exception ex) {
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232 | HandleNetworkError(ex);
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233 | }
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234 | }
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235 | }
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236 |
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237 | public PluginData GetConfigurationFile() {
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238 | using (Disposable<IHiveService> service = ServiceLocator.Instance.GetService()) {
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239 | try {
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240 | PluginData msg = service.Obj.GetConfigurationFile();
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241 | return msg;
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242 | }
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243 | catch (Exception ex) {
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244 | HandleNetworkError(ex);
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245 | return null;
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246 | }
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247 | }
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248 | }
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249 |
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250 | public event EventHandler<EventArgs<Exception>> ExceptionOccured;
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251 | private void OnExceptionOccured(Exception e) {
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252 | Logger.Error("Error: " + e.ToString());
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253 | var handler = ExceptionOccured;
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254 | if (handler != null) handler(this, new EventArgs<Exception>(e));
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255 | }
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256 | }
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257 | } |
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