[5314] | 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.ServiceModel;
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[5599] | 24 | using HeuristicLab.Clients.Hive.SlaveCore.ServiceContracts;
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[5314] | 25 | using HeuristicLab.Common;
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| 26 | using HeuristicLab.Core;
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| 27 |
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[5599] | 28 | namespace HeuristicLab.Clients.Hive.SlaveCore.Views {
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[5314] | 29 |
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| 30 | [CallbackBehavior(ConcurrencyMode = ConcurrencyMode.Reentrant)]
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| 31 | [Item("SlaveItem", "Represents a slave which receives messages from the core")]
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| 32 | public class SlaveItem : Item, ISlaveCommunicationCallbacks, IDisposable {
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| 33 | ISlaveCommunication pipeProxy;
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| 34 | DuplexChannelFactory<ISlaveCommunication> pipeFactory;
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| 35 |
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| 36 | public SlaveItem() {
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| 37 | }
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| 38 |
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| 39 | private void RegisterEvents() {
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| 40 | pipeFactory.Faulted += new EventHandler(pipeFactory_Faulted);
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| 41 | pipeFactory.Closed += new EventHandler(pipeFactory_Closed);
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| 42 | pipeFactory.Opened += new EventHandler(pipeFactory_Opened);
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| 43 | }
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| 44 |
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| 45 | private void DeregisterEvents() {
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| 46 | pipeFactory.Faulted -= new EventHandler(pipeFactory_Faulted);
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| 47 | pipeFactory.Closed -= new EventHandler(pipeFactory_Closed);
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| 48 | pipeFactory.Opened -= new EventHandler(pipeFactory_Opened);
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| 49 | }
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| 50 |
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| 51 | void pipeFactory_Opened(object sender, EventArgs e) {
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| 52 | OnMessageLogged("Connection to Slave core established");
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| 53 | }
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| 54 |
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| 55 | void pipeFactory_Closed(object sender, EventArgs e) {
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| 56 | OnMessageLogged("Connection to Slave core closed");
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| 57 | }
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| 58 |
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| 59 | void pipeFactory_Faulted(object sender, EventArgs e) {
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| 60 | OnMessageLogged("Connection to Slave core faulted");
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| 61 | }
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| 62 |
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| 63 | public void Open() {
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| 64 | //TODO: read info from app.config
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| 65 | pipeFactory = new DuplexChannelFactory<ISlaveCommunication>(this,
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| 66 | new NetNamedPipeBinding(), new EndpointAddress("net.pipe://localhost/HeuristicLabSlaveCom"));
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| 67 |
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| 68 | pipeProxy = pipeFactory.CreateChannel();
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| 69 | RegisterEvents();
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| 70 |
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| 71 | try {
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| 72 | pipeProxy.Subscribe();
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| 73 | }
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| 74 | catch (Exception e) {
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| 75 | OnMessageLogged("Couldn't connect to Slave core. Is it possible that the Slave Core isn't running?\nException is: " + e.ToString());
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| 76 | }
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| 77 | }
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| 78 |
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| 79 | public void ReconnectToSlaveCore() {
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| 80 | try {
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| 81 | pipeProxy = pipeFactory.CreateChannel();
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| 82 | pipeProxy.Subscribe();
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| 83 | }
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| 84 | catch (Exception e) {
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| 85 | OnMessageLogged("Couldn't connect to Slave core. Is it possible that the Slave Core isn't running?\nException is: " + e.ToString());
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| 86 | }
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| 87 | }
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| 88 |
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| 89 | public bool isClosed() {
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| 90 | if (pipeFactory == null) return true;
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| 91 | return pipeFactory.State == CommunicationState.Closed;
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| 92 | }
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| 93 |
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[5451] | 94 | public void PauseAll() {
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[5315] | 95 | try {
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| 96 | if (pipeFactory.State != CommunicationState.Faulted && pipeFactory.State != CommunicationState.Closed)
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[5451] | 97 | pipeProxy.PauseAll();
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[5315] | 98 | }
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| 99 | catch (Exception e) {
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| 100 | OnMessageLogged("Error soft pausening core: " + e.ToString());
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| 101 | }
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| 102 | }
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| 103 |
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[5451] | 104 | public void StopAll() {
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[5315] | 105 | try {
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| 106 | if (pipeFactory.State != CommunicationState.Faulted && pipeFactory.State != CommunicationState.Closed)
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[5451] | 107 | pipeProxy.StopAll();
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[5315] | 108 | }
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| 109 | catch (Exception e) {
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| 110 | OnMessageLogged("Error hard pausening core: " + e.ToString());
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| 111 | }
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| 112 | }
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| 113 |
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| 114 | public void RestartCore() {
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| 115 | try {
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| 116 | if (pipeFactory.State != CommunicationState.Faulted && pipeFactory.State != CommunicationState.Closed)
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| 117 | pipeProxy.Restart();
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| 118 | }
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| 119 | catch (Exception e) {
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| 120 | OnMessageLogged("Error restarting core: " + e.ToString());
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| 121 | }
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| 122 | }
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| 123 |
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[5451] | 124 | public void Sleep() {
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| 125 | try {
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| 126 | if (pipeFactory.State != CommunicationState.Faulted && pipeFactory.State != CommunicationState.Closed)
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| 127 | pipeProxy.Sleep();
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| 128 | }
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| 129 | catch (Exception e) {
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| 130 | OnMessageLogged("Error sending core to sleep: " + e.ToString());
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| 131 | }
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| 132 | }
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| 133 |
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[5314] | 134 | public void Close() {
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| 135 | if (pipeFactory.State != CommunicationState.Closed) {
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| 136 | pipeProxy.Unsubscribe();
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| 137 | pipeFactory.Close();
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| 138 | }
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| 139 | }
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| 140 |
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| 141 | public event EventHandler<EventArgs<StatusCommons>> SlaveStatusChanged;
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[5451] | 142 | public void OnStatusChanged(StatusCommons status) {
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[5314] | 143 | var handler = SlaveStatusChanged;
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| 144 | if (handler != null) handler(this, new EventArgs<StatusCommons>(status));
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| 145 | }
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| 146 |
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| 147 | public event EventHandler<EventArgs<string>> SlaveMessageLogged;
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[5451] | 148 | public void OnMessageLogged(string message) {
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[5314] | 149 | var handler = SlaveMessageLogged;
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| 150 | if (handler != null) handler(this, new EventArgs<string>(message));
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| 151 | }
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| 152 |
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| 153 | public event EventHandler SlaveShutdown;
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[5451] | 154 | public void OnShutdown() {
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[5314] | 155 | var handler = SlaveShutdown;
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| 156 | if (handler != null) handler(this, EventArgs.Empty);
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| 157 | }
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| 158 |
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| 159 | public void Dispose() {
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| 160 | DeregisterEvents();
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| 161 | Close();
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| 162 | }
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| 163 |
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| 164 | public override Common.IDeepCloneable Clone(Common.Cloner cloner) {
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| 165 | throw new NotImplementedException("It's not allowed to clone a SlaveItem!");
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| 166 | }
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| 167 | }
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| 168 | }
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