[6983] | 1 | #region License Information
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| 2 | /* HeuristicLab
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[11594] | 3 | * Copyright (C) 2002-2014 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
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[6983] | 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 |
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| 26 | namespace HeuristicLab.Clients.Hive.SlaveCore {
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| 27 |
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| 28 | /// <summary>
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| 29 | /// WcfService class is implemented as a singleton and works as a communication layer with the Hive server
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| 30 | /// </summary>
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| 31 | public class WcfService : MarshalByRefObject, IPluginProvider {
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| 32 | private static WcfService instance;
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| 33 | public DateTime ConnectedSince { get; private set; }
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| 34 | public NetworkEnum.WcfConnState ConnState { get; private set; }
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| 35 |
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| 36 | /// <summary>
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| 37 | /// Getter for the Instance of the WcfService
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| 38 | /// </summary>
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| 39 | /// <returns>the Instance of the WcfService class</returns>
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| 40 | public static WcfService Instance {
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| 41 | get {
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| 42 | if (instance == null) {
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| 43 | instance = new WcfService();
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[7132] | 44 | HiveServiceLocator.Instance.Username = HeuristicLab.Clients.Hive.SlaveCore.Properties.Settings.Default.SlaveUser;
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| 45 | HiveServiceLocator.Instance.Password = HeuristicLab.Clients.Hive.SlaveCore.Properties.Settings.Default.SlavePwd;
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[6983] | 46 | }
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| 47 | return instance;
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| 48 | }
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| 49 | }
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| 50 |
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| 51 | private WcfService() {
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| 52 | ConnState = NetworkEnum.WcfConnState.Disconnected;
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| 53 | }
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| 54 |
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| 55 | #region Task Methods
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| 56 | public Task GetTask(Guid taskId) {
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| 57 | return CallHiveService(s => s.GetTask(taskId));
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| 58 | }
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| 59 |
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| 60 | public void UpdateTask(Task task) {
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| 61 | CallHiveService(s => s.UpdateTask(task));
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| 62 | }
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| 63 | #endregion
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| 64 |
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| 65 | #region TaskData Methods
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| 66 | public TaskData GetTaskData(Guid taskId) {
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| 67 | return CallHiveService(s => s.GetTaskData(taskId));
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| 68 | }
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| 69 |
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| 70 | /// <summary>
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| 71 | /// Uploads the taskData and sets a new taskState (while correctly setting Transferring state)
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| 72 | /// </summary>
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| 73 | public void UpdateTaskData(Task task, TaskData taskData, Guid slaveId, TaskState state, string exception = "") {
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| 74 | CallHiveService(service => {
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| 75 | service.UpdateTask(task);
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| 76 | task = service.UpdateTaskState(task.Id, TaskState.Transferring, slaveId, null, null);
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| 77 | HiveClient.TryAndRepeat(() => {
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| 78 | service.UpdateTaskData(task, taskData);
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| 79 | }, HeuristicLab.Clients.Hive.SlaveCore.Properties.Settings.Default.PluginDeletionRetries, "Could not upload jobdata.");
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| 80 | service.UpdateTaskState(task.Id, state, slaveId, null, exception);
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| 81 | });
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| 82 | }
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| 83 |
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| 84 | public Task UpdateJobState(Guid taskId, TaskState taskState, string exception) {
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| 85 | return CallHiveService(s => s.UpdateTaskState(taskId, taskState, ConfigManager.Instance.GetClientInfo().Id, null, exception));
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| 86 | }
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| 87 | #endregion
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| 88 |
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| 89 | #region Heartbeat Methods
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| 90 | public List<MessageContainer> SendHeartbeat(Heartbeat heartbeat) {
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| 91 | return CallHiveService(s => s.Heartbeat(heartbeat));
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| 92 | }
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| 93 | #endregion
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| 94 |
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| 95 | #region Plugin Methods
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| 96 | public Plugin GetPlugin(Guid id) {
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| 97 | return CallHiveService(s => s.GetPlugin(id));
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| 98 | }
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| 99 |
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| 100 | public IEnumerable<Plugin> GetPlugins() {
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| 101 | return CallHiveService(s => s.GetPlugins());
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| 102 | }
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| 103 |
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| 104 | public IEnumerable<PluginData> GetPluginDatas(List<Guid> pluginIds) {
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| 105 | return CallHiveService(s => s.GetPluginDatas(pluginIds));
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| 106 | }
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| 107 | #endregion
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| 108 |
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| 109 | #region Events
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| 110 | public event EventHandler Connected;
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| 111 | private void OnConnected() {
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| 112 | var handler = Connected;
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| 113 | if (handler != null) handler(this, EventArgs.Empty);
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| 114 | }
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| 115 |
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| 116 | public event EventHandler<EventArgs<Exception>> ExceptionOccured;
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| 117 | private void OnExceptionOccured(Exception e) {
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| 118 | var handler = ExceptionOccured;
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| 119 | if (handler != null) handler(this, new EventArgs<Exception>(e));
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| 120 | }
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| 121 | #endregion
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| 122 |
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| 123 | #region Helpers
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| 124 | /// <summary>
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| 125 | /// Connects with the server, registers the events and fires the Connected event.
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| 126 | /// </summary>
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| 127 | public void Connect(Slave slaveInfo) {
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| 128 | CallHiveService(service => {
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| 129 | ConnState = NetworkEnum.WcfConnState.Connected;
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| 130 | ConnectedSince = DateTime.Now;
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| 131 | service.Hello(slaveInfo);
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| 132 | OnConnected();
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| 133 | });
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| 134 | }
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| 135 |
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| 136 | /// <summary>
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| 137 | /// Disconnects the slave from the server
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| 138 | /// </summary>
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| 139 | public void Disconnect() {
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| 140 | CallHiveService(service => {
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| 141 | service.GoodBye(ConfigManager.Instance.GetClientInfo().Id);
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| 142 | ConnState = NetworkEnum.WcfConnState.Disconnected;
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| 143 | });
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| 144 | }
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| 145 |
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| 146 | public int GetNewHeartbeatInterval(Guid id) {
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| 147 | int ret = -1;
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| 148 | CallHiveService(s => ret = s.GetNewHeartbeatInterval(id));
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| 149 | return ret;
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| 150 | }
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| 151 |
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| 152 | /// <summary>
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| 153 | /// Network communication error handler.
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| 154 | /// Every network error gets logged and the connection switches to faulted state
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| 155 | /// </summary>
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| 156 | private void HandleNetworkError(Exception e) {
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| 157 | ConnState = NetworkEnum.WcfConnState.Failed;
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| 158 | OnExceptionOccured(e);
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| 159 | }
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| 160 |
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| 161 | public void CallHiveService(Action<IHiveService> call) {
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| 162 | try {
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[7132] | 163 | HiveServiceLocator.Instance.CallHiveService(call);
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[6983] | 164 | }
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| 165 | catch (Exception ex) {
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| 166 | HandleNetworkError(ex);
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| 167 | }
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| 168 | }
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| 169 |
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| 170 | private T CallHiveService<T>(Func<IHiveService, T> call) {
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| 171 | try {
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[7132] | 172 | return HiveServiceLocator.Instance.CallHiveService(call);
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[6983] | 173 | }
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| 174 | catch (Exception ex) {
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| 175 | HandleNetworkError(ex);
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| 176 | return default(T);
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| 177 | }
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| 178 | }
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| 179 | #endregion
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| 180 | }
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| 181 | } |
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