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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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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26 | using System.ServiceModel;
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27 | using HeuristicLab.Hive.Contracts.Interfaces;
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28 | using HeuristicLab.Hive.Slave.Common;
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29 | using HeuristicLab.PluginInfrastructure;
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30 | using System.IO;
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31 | using System.Runtime.Serialization.Formatters.Binary;
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32 | using HeuristicLab.Tracing;
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33 | using HeuristicLab.Hive.Contracts;
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34 | using HeuristicLab.Hive.Contracts.BusinessObjects;
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35 |
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36 | namespace HeuristicLab.Hive.Slave.Communication {
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37 | using Service = HeuristicLab.Hive.Slave.Communication.ServerService;
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38 | using HeuristicLab.Hive.Slave.Communication.ServerService;
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39 | using HeuristicLab.Hive.Contracts.ResponseObjects;
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40 |
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41 | /// <summary>
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42 | /// WcfService class is implemented as a Singleton and works as a communication Layer with the Server
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43 | /// </summary>
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44 | public class WcfService {
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45 | private static WcfService instance;
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46 | /// <summary>
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47 | /// Getter for the Instance of the WcfService
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48 | /// </summary>
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49 | /// <returns>the Instance of the WcfService class</returns>
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50 | public static WcfService Instance {
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51 | get {
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52 | if (instance == null) {
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53 | Logger.Debug("New WcfService Instance created");
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54 | instance = new WcfService();
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55 | }
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56 | return instance;
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57 | }
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58 | }
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59 |
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60 | public DateTime ConnectedSince { get; private set; }
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61 | public NetworkEnum.WcfConnState ConnState { get; private set; }
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62 | public bool LoggedIn { get; set; }
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63 | public string ServerIP { get; private set; }
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64 | public int ServerPort { get; private set; }
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65 |
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66 | public event EventHandler ConnectionRestored;
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67 | public event EventHandler ServerChanged;
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68 | public event EventHandler Connected;
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69 |
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70 | public SlaveFacadeClient proxy = null;
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71 |
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72 | /// <summary>
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73 | /// Constructor
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74 | /// </summary>
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75 | private WcfService() {
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76 | ConnState = NetworkEnum.WcfConnState.Disconnected;
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77 | LoggedIn = false;
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78 | }
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79 |
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80 | /// <summary>
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81 | /// Connects with the Server, registers the events and fires the Connected (and quiet possibly the ConnectionRestored) Event.
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82 | /// </summary>
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83 | public void Connect() {
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84 | try {
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85 | Logger.Debug("Starting the Connection Process");
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86 | if (String.Empty.Equals(ServerIP) || ServerPort == 0) {
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87 | Logger.Info("No Server IP or Port set!");
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88 | return;
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89 | }
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90 |
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91 | Logger.Debug("Creating the new connection proxy");
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92 | proxy = new SlaveFacadeClient(
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93 | HeuristicLab.Hive.Contracts.WcfSettings.GetStreamedBinding(),
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94 | new EndpointAddress("net.tcp://" + ServerIP + ":" + ServerPort + "/HiveServer/SlaveCommunicator")
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95 | );
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96 | Logger.Debug("Created the new connection proxy");
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97 |
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98 | Logger.Debug("Registring new Events");
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99 | proxy.LoginCompleted += new EventHandler<LoginCompletedEventArgs>(proxy_LoginCompleted);
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100 | proxy.GetStreamedJobCompleted += new EventHandler<GetStreamedJobCompletedEventArgs>(proxy_GetStreamedJobCompleted);
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101 | proxy.StoreFinishedJobResultStreamedCompleted += new EventHandler<StoreFinishedJobResultStreamedCompletedEventArgs>(proxy_StoreFinishedJobResultStreamedCompleted);
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102 | proxy.ProcessSnapshotStreamedCompleted += new EventHandler<ProcessSnapshotStreamedCompletedEventArgs>(proxy_ProcessSnapshotStreamedCompleted);
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103 | proxy.ProcessHeartBeatCompleted += new EventHandler<ProcessHeartBeatCompletedEventArgs>(proxy_ProcessHeartBeatCompleted);
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104 | Logger.Debug("Registered new Events");
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105 | Logger.Debug("Opening the Connection");
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106 | proxy.Open();
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107 | Logger.Debug("Opened the Connection");
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108 |
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109 | ConnState = NetworkEnum.WcfConnState.Connected;
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110 | ConnectedSince = DateTime.Now;
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111 | LoggedIn = false;
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112 |
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113 | if (Connected != null) {
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114 | Logger.Debug("Calling the connected Event");
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115 | Connected(this, new EventArgs());
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116 | //Todo: This won't be hit. EVER
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117 | }
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118 | if (ConnState == NetworkEnum.WcfConnState.Failed) {
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119 | ConnectionRestored(this, new EventArgs());
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120 | }
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121 | } catch (Exception ex) {
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122 | HandleNetworkError(ex);
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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 | /// <summary>
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128 | /// Changes the Connectionsettings (serverIP & serverPort) and reconnects
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129 | /// </summary>
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130 | /// <param name="serverIP">current Server IP</param>
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131 | /// <param name="serverPort">current Server Port</param>
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132 | public void Connect(String serverIP, int serverPort) {
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133 | Logger.Debug("Called Connected with " + serverIP + ":" + serverPort);
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134 | String oldIp = this.ServerIP;
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135 | int oldPort = this.ServerPort;
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136 | this.ServerIP = serverIP;
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137 | this.ServerPort = serverPort;
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138 | Connect();
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139 | if (oldIp != serverIP || oldPort != ServerPort)
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140 | if (ServerChanged != null)
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141 | ServerChanged(this, new EventArgs());
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142 | }
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143 |
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144 | public void SetIPAndPort(String serverIP, int serverPort) {
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145 | Logger.Debug("Called with " + serverIP + ":" + serverPort);
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146 | this.ServerIP = serverIP;
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147 | this.ServerPort = serverPort;
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148 | }
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149 |
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150 | /// <summary>
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151 | /// Disconnects the Slave from the Server
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152 | /// </summary>
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153 | public void Disconnect() {
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154 | ConnState = NetworkEnum.WcfConnState.Disconnected;
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155 | LoggedIn = false;
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156 | }
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157 |
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158 | /// <summary>
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159 | /// Network communication Error Handler - Every network error gets logged and the connection switches to faulted state
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160 | /// </summary>
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161 | /// <param name="e">The Exception</param>
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162 | private void HandleNetworkError(Exception e) {
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163 | ConnState = NetworkEnum.WcfConnState.Failed;
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164 | LoggedIn = false;
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165 | Logger.Error("Network exception occurred: " + e);
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166 | }
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167 |
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168 | /// <summary>
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169 | /// Methods for the Server Login
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170 | /// </summary>
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171 | #region Login
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172 | public event System.EventHandler<LoginCompletedEventArgs> LoginCompleted;
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173 | public void LoginAsync(SlaveDto clientInfo) {
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174 | if (ConnState == NetworkEnum.WcfConnState.Connected) {
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175 | Logger.Debug("STARTED: Login Async");
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176 | proxy.LoginAsync(clientInfo.Id);
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177 | }
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178 | }
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179 | private void proxy_LoginCompleted(object sender, LoginCompletedEventArgs e) {
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180 | if (e.Error == null) {
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181 | Logger.Debug("ENDED: Login Async");
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182 | LoggedIn = true;
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183 | LoginCompleted(sender, e);
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184 | } else
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185 | HandleNetworkError(e.Error.InnerException);
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186 | }
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187 |
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188 | public void LoginSync(SlaveDto clientInfo) {
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189 | try {
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190 | if (ConnState == NetworkEnum.WcfConnState.Connected) {
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191 | Logger.Debug("STARTED: Login Sync");
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192 | Response res = proxy.Login(clientInfo.Id);
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193 | if (res.StatusMessage != ResponseStatus.Ok) {
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194 | Logger.Error("FAILED: Login Failed! " + res.StatusMessage);
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195 | throw new Exception(res.StatusMessage.ToString());
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196 | } else {
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197 | Logger.Info("ENDED: Login succeeded" + res.StatusMessage);
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198 | LoggedIn = true;
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199 | }
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200 | }
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201 | } catch (Exception e) {
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202 | HandleNetworkError(e);
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203 | }
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204 | }
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205 |
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206 | #endregion
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207 |
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208 | /// <summary>
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209 | /// Pull a Job from the Server
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210 | /// </summary>
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211 | #region PullJob
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212 | public event System.EventHandler<GetJobCompletedEventArgs> GetJobCompleted;
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213 | public void GetJobAsync(Guid guid) {
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214 | if (LoggedIn) {
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215 | Logger.Debug("STARTED: Fetching of Jobs from Server for Slave");
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216 | proxy.GetStreamedJobAsync(guid);
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217 | }
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218 | }
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219 |
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220 | void proxy_GetStreamedJobCompleted(object sender, GetStreamedJobCompletedEventArgs e) {
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221 | if (e.Error == null) {
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222 | Logger.Debug("ENDED: Fetching of Jobs from Server for Slave");
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223 | Stream stream = null;
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224 | MemoryStream memStream = null;
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225 |
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226 | try {
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227 | stream = (Stream)e.Result;
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228 |
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229 | //first deserialize the response
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230 | BinaryFormatter formatter = new BinaryFormatter();
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231 | ResponseObject<JobDto> response = (ResponseObject<JobDto>)formatter.Deserialize(stream);
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232 |
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233 | //second deserialize the BLOB
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234 | memStream = new MemoryStream();
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235 |
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236 | byte[] buffer = new byte[3024];
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237 | int read = 0;
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238 | while ((read = stream.Read(buffer, 0, buffer.Length)) > 0) {
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239 | memStream.Write(buffer, 0, read);
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240 | }
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241 |
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242 | memStream.Close();
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243 |
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244 | GetJobCompletedEventArgs completedEventArgs = new GetJobCompletedEventArgs(new object[] { response, memStream.GetBuffer() }, e.Error, e.Cancelled, e.UserState);
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245 | GetJobCompleted(sender, completedEventArgs);
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246 | } catch (Exception ex) {
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247 | Logger.Error(ex);
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248 | } finally {
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249 | if (stream != null)
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250 | stream.Dispose();
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251 |
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252 | if (memStream != null)
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253 | memStream.Dispose();
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254 | }
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255 | } else
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256 | HandleNetworkError(e.Error);
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257 | }
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258 |
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259 | #endregion
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260 |
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261 | /// <summary>
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262 | /// Send back finished Job Results
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263 | /// </summary>
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264 | #region SendJobResults
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265 | public event System.EventHandler<StoreFinishedJobResultCompletedEventArgs> GetFinishedJobResultCompleted;
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266 | public void GetFinishedJobResultAsync(Guid clientId, Guid jobId, byte[] result, double percentage, Exception exception, bool finished) {
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267 | if (LoggedIn) {
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268 | Logger.Debug("STARTED: Sending back the finished job results");
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269 | Logger.Debug("Building stream");
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270 | Stream stream = GetStreamedJobResult(clientId, jobId, result, percentage, exception);
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271 | Logger.Debug("Builded stream");
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272 | Logger.Debug("Making the call");
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273 | proxy.StoreFinishedJobResultStreamedAsync(stream, stream);
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274 | }
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275 | }
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276 |
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277 | private void proxy_StoreFinishedJobResultStreamedCompleted(object sender, StoreFinishedJobResultStreamedCompletedEventArgs e) {
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278 | Logger.Debug("Finished storing the job");
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279 | Stream stream = (Stream)e.UserState;
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280 | if (stream != null) {
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281 | Logger.Debug("Stream not null, disposing it");
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282 | stream.Dispose();
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283 | }
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284 | if (e.Error == null) {
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285 | StoreFinishedJobResultCompletedEventArgs args = new StoreFinishedJobResultCompletedEventArgs(new object[] { e.Result }, e.Error, e.Cancelled, e.UserState);
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286 | Logger.Debug("calling the Finished Job Event");
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287 | GetFinishedJobResultCompleted(sender, args);
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288 | Logger.Debug("ENDED: Sending back the finished job results");
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289 | } else {
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290 | HandleNetworkError(e.Error);
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291 | }
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292 | }
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293 |
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294 | #endregion
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295 |
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296 | #region Processsnapshots
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297 | public event System.EventHandler<ProcessSnapshotCompletedEventArgs> ProcessSnapshotCompleted;
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298 | public void ProcessSnapshotAsync(Guid clientId, Guid jobId, byte[] result, double percentage, Exception exception, bool finished) {
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299 | if (LoggedIn) {
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300 | Stream stream = GetStreamedJobResult(clientId, jobId, result, percentage, exception);
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301 | proxy.ProcessSnapshotStreamedAsync(stream, stream);
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302 | }
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303 | }
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304 |
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305 | void proxy_ProcessSnapshotStreamedCompleted(object sender, ProcessSnapshotStreamedCompletedEventArgs e) {
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306 | Stream stream =
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307 | (Stream)e.UserState;
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308 | if (stream != null)
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309 | stream.Dispose();
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310 |
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311 | if (e.Error == null) {
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312 | ProcessSnapshotCompletedEventArgs args =
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313 | new ProcessSnapshotCompletedEventArgs(
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314 | new object[] { e.Result }, e.Error, e.Cancelled, e.UserState);
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315 |
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316 | ProcessSnapshotCompleted(sender, args);
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317 | } else
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318 | HandleNetworkError(e.Error);
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319 | }
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320 |
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321 | #endregion
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322 |
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323 | /// <summary>
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324 | /// Methods for sending the periodically Heartbeat
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325 | /// </summary>
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326 | #region Heartbeat
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327 |
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328 | public event System.EventHandler<ProcessHeartBeatCompletedEventArgs> ProcessHeartBeatCompleted;
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329 | public void ProcessHeartBeatAsync(HeartBeatData hbd) {
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330 | if (LoggedIn)
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331 | Logger.Debug("STARTING: sending heartbeat");
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332 | proxy.ProcessHeartBeatAsync(hbd);
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333 | }
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334 |
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335 | private void proxy_ProcessHeartBeatCompleted(object sender, ProcessHeartBeatCompletedEventArgs e) {
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336 | if (e.Error == null && e.Result.StatusMessage == ResponseStatus.Ok) {
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337 | ProcessHeartBeatCompleted(sender, e);
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338 | Logger.Debug("ENDED: sending heartbeats");
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339 | } else {
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340 | try {
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341 | Logger.Error("Error: " + e.Result.StatusMessage);
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342 | } catch (Exception ex) {
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343 | Logger.Error("Error: ", ex);
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344 | }
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345 | HandleNetworkError(e.Error);
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346 | }
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347 | }
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348 |
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349 | #endregion
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350 |
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351 | /// <summary>
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352 | /// Send back finished and Stored Job Results
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353 | /// </summary>
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354 | private Stream GetStreamedJobResult(Guid clientId, Guid jobId, byte[] result, double percentage, Exception exception) {
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355 | JobResult jobResult = new JobResult();
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356 | jobResult.SlaveId = clientId;
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357 | jobResult.JobId = jobId;
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358 | jobResult.Percentage = percentage;
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359 | jobResult.Exception = exception != null ? exception.Message : "";
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360 |
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361 | MultiStream stream = new MultiStream();
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362 |
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363 | //first send result
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364 | stream.AddStream(new StreamedObject<JobResult>(jobResult));
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365 |
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366 | //second stream the job binary data
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367 | MemoryStream memStream = new MemoryStream(result, false);
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368 | stream.AddStream(memStream);
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369 |
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370 | return stream;
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371 | }
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372 |
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373 | public ResponseResultReceived StoreFinishedJobResultsSync(Guid clientId, Guid jobId, byte[] result, double percentage, Exception exception, bool finished) {
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374 | return proxy.StoreFinishedJobResultStreamed(GetStreamedJobResult(clientId, jobId, result, percentage, exception));
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375 | }
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376 |
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377 | public Response IsJobStillNeeded(Guid jobId) {
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378 | try {
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379 | Logger.Debug("STARTING: Sync call: IsJobStillNeeded");
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380 | Response res = proxy.IsJobStillNeeded(jobId);
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381 | Logger.Debug("ENDED: Sync call: IsJobStillNeeded");
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382 | return res;
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383 | } catch (Exception e) {
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384 | HandleNetworkError(e);
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385 | return null;
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386 | }
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387 | }
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388 |
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389 | public ResponseResultReceived ProcessSnapshotSync(Guid clientId, Guid jobId, byte[] result, double percentage, Exception exception) {
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390 | try {
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391 | return proxy.ProcessSnapshotStreamed(GetStreamedJobResult(clientId, jobId, result, percentage, exception));
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392 | } catch (Exception e) {
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393 | HandleNetworkError(e);
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394 | return null;
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395 | }
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396 | }
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397 |
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398 | public IEnumerable<CachedHivePluginInfoDto> RequestPlugins(List<HivePluginInfoDto> requestedPlugins) {
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399 | try {
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400 | Logger.Debug("STARTED: Requesting Plugins for Job");
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401 | Logger.Debug("STARTED: Getting the stream");
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402 | Stream stream = proxy.GetStreamedPlugins(requestedPlugins.ToArray());
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403 | Logger.Debug("ENDED: Getting the stream");
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404 | BinaryFormatter formatter = new BinaryFormatter();
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405 | Logger.Debug("STARTED: Deserializing the stream");
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406 | ResponseList<CachedHivePluginInfoDto> response = (ResponseList<CachedHivePluginInfoDto>)formatter.Deserialize(stream);
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407 | Logger.Debug("ENDED: Deserializing the stream");
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408 | if (stream != null)
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409 | stream.Dispose();
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410 | return response.List;
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411 | } catch (Exception e) {
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412 | HandleNetworkError(e);
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413 | return null;
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414 | }
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415 | }
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416 |
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417 | public void Logout(Guid guid) {
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418 | try {
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419 | Logger.Debug("STARTED: Logout");
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420 | proxy.Logout(guid);
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421 | Logger.Debug("ENDED: Logout");
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422 | } catch (Exception e) {
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423 | HandleNetworkError(e);
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424 | }
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425 | }
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426 |
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427 | public ResponseCalendar GetCalendarSync(Guid clientId) {
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428 | try {
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429 | Logger.Debug("STARTED: Syncing Calendars");
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430 | ResponseCalendar cal = proxy.GetCalendar(clientId);
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431 | Logger.Debug("ENDED: Syncing Calendars");
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432 | return cal;
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433 | } catch (Exception e) {
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434 | HandleNetworkError(e);
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435 | return null;
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436 | }
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437 | }
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438 |
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439 | public Response SetCalendarStatus(Guid clientId, CalendarState state) {
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440 | try {
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441 | Logger.Debug("STARTED: Setting Calendar status to: " + state);
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442 | Response resp = proxy.SetCalendarStatus(clientId, state);
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443 | Logger.Debug("ENDED: Setting Calendar status to: " + state);
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444 | return resp;
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445 | } catch (Exception e) {
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446 | HandleNetworkError(e);
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447 | return null;
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448 | }
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449 | }
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450 | }
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451 | } |
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