[11406] | 1 | #region License Information
|
---|
| 2 | /* HeuristicLab
|
---|
| 3 | * Copyright (C) 2002-2014 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
|
---|
| 4 | *
|
---|
| 5 | * This file is part of HeuristicLab.
|
---|
| 6 | *
|
---|
| 7 | * HeuristicLab is free software: you can redistribute it and/or modify
|
---|
| 8 | * it under the terms of the GNU General Public License as published by
|
---|
| 9 | * the Free Software Foundation, either version 3 of the License, or
|
---|
| 10 | * (at your option) any later version.
|
---|
| 11 | *
|
---|
| 12 | * HeuristicLab is distributed in the hope that it will be useful,
|
---|
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
|
---|
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
---|
| 15 | * GNU General Public License for more details.
|
---|
| 16 | *
|
---|
| 17 | * You should have received a copy of the GNU General Public License
|
---|
| 18 | * along with HeuristicLab. If not, see <http://www.gnu.org/licenses/>.
|
---|
| 19 | */
|
---|
| 20 | #endregion
|
---|
| 21 |
|
---|
| 22 | using HeuristicLab.Common;
|
---|
| 23 | using HeuristicLab.Core;
|
---|
[11526] | 24 | using HeuristicLab.Core.Networks;
|
---|
[11554] | 25 | using HeuristicLab.Operators;
|
---|
[11577] | 26 | using HeuristicLab.Optimization;
|
---|
[11406] | 27 | using HeuristicLab.Persistence.Default.CompositeSerializers.Storable;
|
---|
[11409] | 28 | using System;
|
---|
[11519] | 29 | using System.Collections.Generic;
|
---|
| 30 | using System.Linq;
|
---|
| 31 | using System.Threading;
|
---|
[11406] | 32 |
|
---|
[11577] | 33 | namespace HeuristicLab.Networks {
|
---|
[11406] | 34 | [Item("AlgorithmNode", "A node of an optimization network which contains a HeuristicLab algorithm.")]
|
---|
| 35 | [StorableClass]
|
---|
[11409] | 36 | public class AlgorithmNode : Node, IAlgorithmNode {
|
---|
[11519] | 37 | private object locker = new object();
|
---|
| 38 | private Dictionary<IAlgorithm, AutoResetEvent> waitHandles = new Dictionary<IAlgorithm, AutoResetEvent>();
|
---|
| 39 | private Dictionary<IAlgorithm, Exception> exceptions = new Dictionary<IAlgorithm, Exception>();
|
---|
| 40 |
|
---|
[11409] | 41 | new public PortCollection Ports {
|
---|
| 42 | get { return base.Ports; }
|
---|
| 43 | }
|
---|
| 44 |
|
---|
[11406] | 45 | [Storable]
|
---|
| 46 | private IAlgorithm algorithm;
|
---|
| 47 | public IAlgorithm Algorithm {
|
---|
| 48 | get { return algorithm; }
|
---|
| 49 | set {
|
---|
| 50 | if (value != algorithm) {
|
---|
| 51 | algorithm = value;
|
---|
| 52 | OnAlgorithmChanged();
|
---|
| 53 | }
|
---|
| 54 | }
|
---|
| 55 | }
|
---|
| 56 |
|
---|
[11519] | 57 | [Storable]
|
---|
| 58 | private RunCollection runs;
|
---|
| 59 | public RunCollection Runs {
|
---|
| 60 | get { return runs; }
|
---|
| 61 | }
|
---|
| 62 |
|
---|
[11406] | 63 | [StorableConstructor]
|
---|
| 64 | protected AlgorithmNode(bool deserializing) : base(deserializing) { }
|
---|
| 65 | protected AlgorithmNode(AlgorithmNode original, Cloner cloner)
|
---|
| 66 | : base(original, cloner) {
|
---|
| 67 | algorithm = cloner.Clone(original.algorithm);
|
---|
[11519] | 68 | runs = cloner.Clone(original.runs);
|
---|
[11406] | 69 | }
|
---|
[11519] | 70 | public AlgorithmNode()
|
---|
| 71 | : base("AlgorithmNode") {
|
---|
| 72 | runs = new RunCollection();
|
---|
[11406] | 73 | }
|
---|
[11519] | 74 | public AlgorithmNode(string name)
|
---|
| 75 | : base(name) {
|
---|
| 76 | runs = new RunCollection();
|
---|
| 77 | }
|
---|
| 78 | public AlgorithmNode(string name, string description)
|
---|
| 79 | : base(name, description) {
|
---|
| 80 | runs = new RunCollection();
|
---|
| 81 | }
|
---|
[11406] | 82 |
|
---|
| 83 | public override IDeepCloneable Clone(Cloner cloner) {
|
---|
| 84 | return new AlgorithmNode(this, cloner);
|
---|
| 85 | }
|
---|
| 86 |
|
---|
[11519] | 87 | protected virtual void Configure(IConfigurationPort port, IMessage message, CancellationToken token) {
|
---|
| 88 | // set algorithm and problem parameters
|
---|
| 89 | lock (locker) {
|
---|
| 90 | if (algorithm != null) {
|
---|
| 91 | foreach (var v in message.Values) {
|
---|
| 92 | IParameter param = null;
|
---|
| 93 | if (Algorithm.Parameters.TryGetValue(v.Name, out param)) {
|
---|
| 94 | var vp = param as IValueParameter;
|
---|
| 95 | if (vp != null) vp.Value = v.Value;
|
---|
| 96 | }
|
---|
| 97 | if (Algorithm.Problem.Parameters.TryGetValue(v.Name, out param)) {
|
---|
| 98 | var vp = param as IValueParameter;
|
---|
| 99 | if (vp != null) vp.Value = v.Value;
|
---|
| 100 | }
|
---|
[11406] | 101 | }
|
---|
| 102 | }
|
---|
| 103 | }
|
---|
| 104 | }
|
---|
[11519] | 105 |
|
---|
| 106 | protected virtual void Execute(IExecutionPort port, IMessage message, CancellationToken token) {
|
---|
| 107 | if (Algorithm == null) throw new InvalidOperationException("Algorithm is null");
|
---|
| 108 |
|
---|
| 109 | IAlgorithm algorithm;
|
---|
| 110 | lock (locker) {
|
---|
[11554] | 111 | // prevent cloning of ports in hook operators
|
---|
| 112 | var cloner = new Cloner();
|
---|
| 113 | foreach (var hook in Algorithm.GetObjectGraphObjects(new HashSet<object>() { Algorithm.Results, Algorithm.Runs }).OfType<IHookOperator>()) {
|
---|
| 114 | cloner.RegisterClonedObject(hook.Port, hook.Port);
|
---|
| 115 | }
|
---|
| 116 | algorithm = (IAlgorithm)Algorithm.Clone(cloner);
|
---|
[11519] | 117 | waitHandles.Add(algorithm, new AutoResetEvent(false));
|
---|
| 118 | }
|
---|
| 119 |
|
---|
| 120 | // set parameters
|
---|
| 121 | foreach (var v in message.Values) {
|
---|
| 122 | IParameter param = null;
|
---|
| 123 | if (algorithm.Parameters.TryGetValue(v.Name, out param)) {
|
---|
| 124 | var vp = param as IValueParameter;
|
---|
| 125 | if (vp != null) vp.Value = v.Value;
|
---|
[11406] | 126 | }
|
---|
[11519] | 127 | if (algorithm.Problem.Parameters.TryGetValue(v.Name, out param)) {
|
---|
| 128 | var vp = param as IValueParameter;
|
---|
| 129 | if (vp != null) vp.Value = v.Value;
|
---|
| 130 | }
|
---|
[11406] | 131 | }
|
---|
[11519] | 132 |
|
---|
| 133 | algorithm.StoreAlgorithmInEachRun = false;
|
---|
[11529] | 134 | algorithm.Prepare(true);
|
---|
[11519] | 135 | algorithm.ExceptionOccurred += Algorithm_ExceptionOccurred;
|
---|
| 136 | algorithm.Stopped += Algorithm_Stopped;
|
---|
| 137 |
|
---|
| 138 | using (token.Register(() => { algorithm.Stop(); })) {
|
---|
| 139 | algorithm.Start();
|
---|
| 140 | waitHandles[algorithm].WaitOne();
|
---|
| 141 | }
|
---|
| 142 |
|
---|
| 143 | lock (locker) {
|
---|
| 144 | waitHandles[algorithm].Dispose();
|
---|
| 145 | waitHandles.Remove(algorithm);
|
---|
| 146 |
|
---|
| 147 | Exception ex = null;
|
---|
| 148 | if (exceptions.TryGetValue(algorithm, out ex)) {
|
---|
| 149 | exceptions.Remove(algorithm);
|
---|
| 150 | throw ex;
|
---|
[11409] | 151 | }
|
---|
| 152 | }
|
---|
[11519] | 153 |
|
---|
| 154 | // retrieve results
|
---|
| 155 | var run = algorithm.Runs.First();
|
---|
| 156 | foreach (var v in message.Values) {
|
---|
| 157 | IItem result = null;
|
---|
| 158 | if (run.Results.TryGetValue(v.Name, out result)) {
|
---|
| 159 | v.Value = result;
|
---|
| 160 | }
|
---|
| 161 | }
|
---|
| 162 |
|
---|
| 163 | lock (locker) {
|
---|
| 164 | Runs.Add(run);
|
---|
| 165 | }
|
---|
[11409] | 166 | }
|
---|
[11406] | 167 |
|
---|
[11519] | 168 | private void Algorithm_ExceptionOccurred(object sender, EventArgs<Exception> e) {
|
---|
| 169 | var algorithm = (IAlgorithm)sender;
|
---|
| 170 | lock (locker) {
|
---|
| 171 | exceptions.Add(algorithm, e.Value);
|
---|
| 172 | }
|
---|
| 173 | algorithm.Stop();
|
---|
| 174 | }
|
---|
| 175 | private void Algorithm_Stopped(object sender, EventArgs e) {
|
---|
| 176 | lock (locker) {
|
---|
| 177 | waitHandles[(IAlgorithm)sender].Set();
|
---|
| 178 | }
|
---|
| 179 | }
|
---|
| 180 |
|
---|
[11406] | 181 | public event EventHandler AlgorithmChanged;
|
---|
| 182 | protected virtual void OnAlgorithmChanged() {
|
---|
| 183 | var handler = AlgorithmChanged;
|
---|
| 184 | if (handler != null) handler(this, EventArgs.Empty);
|
---|
| 185 | }
|
---|
| 186 |
|
---|
| 187 | #region Ports Events
|
---|
[11423] | 188 | protected override void RegisterPortsEvents() {
|
---|
| 189 | base.RegisterPortsEvents();
|
---|
[11409] | 190 | foreach (var p in Ports)
|
---|
| 191 | RegisterPortEvents(p);
|
---|
[11406] | 192 | }
|
---|
[11423] | 193 | protected override void Ports_ItemsAdded(object sender, Collections.CollectionItemsChangedEventArgs<IPort> e) {
|
---|
| 194 | base.Ports_ItemsAdded(sender, e);
|
---|
[11406] | 195 | foreach (var p in e.Items)
|
---|
| 196 | RegisterPortEvents(p);
|
---|
| 197 | }
|
---|
[11423] | 198 | protected override void Ports_ItemsRemoved(object sender, Collections.CollectionItemsChangedEventArgs<IPort> e) {
|
---|
| 199 | base.Ports_ItemsRemoved(sender, e);
|
---|
[11406] | 200 | foreach (var p in e.Items)
|
---|
| 201 | DeregisterPortEvents(p);
|
---|
| 202 | }
|
---|
[11423] | 203 | protected override void Ports_ItemsReplaced(object sender, Collections.CollectionItemsChangedEventArgs<IPort> e) {
|
---|
| 204 | base.Ports_ItemsReplaced(sender, e);
|
---|
[11406] | 205 | foreach (var p in e.OldItems)
|
---|
| 206 | DeregisterPortEvents(p);
|
---|
| 207 | foreach (var p in e.Items)
|
---|
| 208 | RegisterPortEvents(p);
|
---|
| 209 | }
|
---|
[11423] | 210 | protected override void Ports_CollectionReset(object sender, Collections.CollectionItemsChangedEventArgs<IPort> e) {
|
---|
| 211 | base.Ports_CollectionReset(sender, e);
|
---|
[11406] | 212 | foreach (var p in e.OldItems)
|
---|
| 213 | DeregisterPortEvents(p);
|
---|
| 214 | foreach (var p in e.Items)
|
---|
| 215 | RegisterPortEvents(p);
|
---|
| 216 | }
|
---|
| 217 | #endregion
|
---|
| 218 |
|
---|
| 219 | #region Port Events
|
---|
| 220 | private void RegisterPortEvents(IPort port) {
|
---|
[11519] | 221 | IConfigurationPort c = port as IConfigurationPort;
|
---|
| 222 | if (c != null) {
|
---|
| 223 | c.MessageReceived += ConfigurationPort_MessageReceived;
|
---|
[11406] | 224 | }
|
---|
[11519] | 225 | IExecutionPort e = port as IExecutionPort;
|
---|
| 226 | if (e != null) {
|
---|
| 227 | e.MessageReceived += ExecutionPort_MessageReceived;
|
---|
[11409] | 228 | }
|
---|
[11406] | 229 | }
|
---|
| 230 | private void DeregisterPortEvents(IPort port) {
|
---|
[11519] | 231 | IConfigurationPort c = port as IConfigurationPort;
|
---|
| 232 | if (c != null) {
|
---|
| 233 | c.MessageReceived -= ConfigurationPort_MessageReceived;
|
---|
[11406] | 234 | }
|
---|
[11519] | 235 | IExecutionPort e = port as IExecutionPort;
|
---|
| 236 | if (e != null) {
|
---|
| 237 | e.MessageReceived -= ExecutionPort_MessageReceived;
|
---|
[11409] | 238 | }
|
---|
[11406] | 239 | }
|
---|
[11519] | 240 | protected virtual void ConfigurationPort_MessageReceived(object sender, EventArgs<IMessage, CancellationToken> e) {
|
---|
| 241 | Configure((IConfigurationPort)sender, e.Value, e.Value2);
|
---|
[11409] | 242 | }
|
---|
[11519] | 243 | protected virtual void ExecutionPort_MessageReceived(object sender, EventArgs<IMessage, CancellationToken> e) {
|
---|
| 244 | Execute((IExecutionPort)sender, e.Value, e.Value2);
|
---|
[11406] | 245 | }
|
---|
| 246 | #endregion
|
---|
| 247 | }
|
---|
| 248 | }
|
---|