1 | using System;
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2 | using System.Collections.Generic;
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3 | using System.IO;
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4 | using System.Linq;
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5 | using System.Text.RegularExpressions;
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6 | using HEAL.Attic;
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7 | using HeuristicLab.Optimization;
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8 | using HeuristicLab.PluginInfrastructure;
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9 | using Newtonsoft.Json.Linq;
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10 |
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11 | namespace HeuristicLab.JsonInterface {
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12 | public readonly struct InstantiatorResult {
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13 | public InstantiatorResult(IOptimizer optimizer, IEnumerable<IResultJsonItem> configuredResultItems) {
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14 | Optimizer = optimizer;
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15 | ConfiguredResultItems = configuredResultItems;
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16 | PostProcessors = Enumerable.Empty<IResultCollectionProcessor>();
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17 | }
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18 |
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19 | public InstantiatorResult(IOptimizer optimizer, IEnumerable<IResultJsonItem> configuredResultItems, IEnumerable<IResultCollectionProcessor> postProcessors) {
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20 | Optimizer = optimizer;
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21 | ConfiguredResultItems = configuredResultItems;
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22 | PostProcessors = postProcessors;
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23 | }
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24 |
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25 | public IOptimizer Optimizer { get; }
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26 | public IEnumerable<IResultJsonItem> ConfiguredResultItems { get; }
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27 | public IEnumerable<IResultCollectionProcessor> PostProcessors { get; }
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28 | }
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29 |
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30 |
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31 | /// <summary>
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32 | /// Class to instantiate an IAlgorithm object with a json interface template and config.
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33 | /// </summary>
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34 | public class JsonTemplateInstantiator {
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35 |
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36 | #region Constants
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37 | private const string RelativePathCurrentDirectoryRegex = @"^(\.)";
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38 | #endregion
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39 |
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40 | #region Private Properties
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41 | private JToken Template { get; set; }
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42 | private JArray Config { get; set; }
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43 | private IDictionary<string, IJsonItem> Objects { get; set; } = new Dictionary<string, IJsonItem>();
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44 | #endregion
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45 |
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46 | /// <summary>
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47 | /// Instantiate an IAlgorithm object with a template and config.
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48 | /// </summary>
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49 | /// <param name="templateFile">Template file (json), generated with JCGenerator.</param>
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50 | /// <param name="configFile">Config file (json) for the template.</param>
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51 | /// <returns>confugrated IOptimizer object</returns>
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52 | public static InstantiatorResult Instantiate(string templateFile, string configFile = null) {
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53 | JsonTemplateInstantiator instantiator = new JsonTemplateInstantiator();
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54 | return instantiator.ExecuteInstantiaton(templateFile, configFile);
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55 | }
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56 |
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57 | #region Helper
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58 | private InstantiatorResult ExecuteInstantiaton(string templateFile, string configFile = null) {
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59 |
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60 | #region Parse Files
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61 | string templateFileFullPath = Path.GetFullPath(templateFile);
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62 | Template = JToken.Parse(File.ReadAllText(templateFile));
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63 | if(!string.IsNullOrEmpty(configFile))
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64 | Config = JArray.Parse(File.ReadAllText(Path.GetFullPath(configFile)));
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65 | #endregion
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66 |
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67 | #region Deserialize HL File
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68 | // extract metadata information
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69 | string relativePath = Template[Constants.Metadata][Constants.HLFileLocation].ToString().Trim(); // get relative path
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70 | // convert to absolute path
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71 | if (Regex.IsMatch(relativePath, RelativePathCurrentDirectoryRegex))
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72 | relativePath = relativePath.Remove(0, 2); // remove first 2 chars -> indicates the current directory
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73 |
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74 | string hLFileLocation = Path.Combine(Path.GetDirectoryName(templateFileFullPath), relativePath);
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75 | ProtoBufSerializer serializer = new ProtoBufSerializer();
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76 | IOptimizer optimizer = (IOptimizer)serializer.Deserialize(hLFileLocation);
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77 | #endregion
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78 |
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79 | // collect all parameterizedItems from template
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80 | CollectParameterizedItems(optimizer);
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81 |
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82 | if (Config != null)
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83 | MergeTemplateWithConfig();
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84 |
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85 | // get algorithm root item
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86 | IJsonItem rootItem = Objects.First().Value;
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87 |
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88 | // validation
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89 | ValidationResult validationResult = rootItem.GetValidator().Validate();
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90 | if (!validationResult.Success)
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91 | throw validationResult.GenerateException();
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92 |
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93 | // inject configuration
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94 | JsonItemConverter.Inject(optimizer, rootItem);
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95 |
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96 | return new InstantiatorResult(optimizer, CollectResults(), CollectResultCollectionProcessors());
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97 | }
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98 |
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99 | /// <summary>
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100 | /// Instantiates all defined (in template) ResultCollectionProcessors and injects the configured parameters.
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101 | /// </summary>
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102 | private IEnumerable<IResultCollectionProcessor> CollectResultCollectionProcessors() {
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103 | IList<IResultCollectionProcessor> postProcessorList = new List<IResultCollectionProcessor>();
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104 | foreach (JObject obj in Template[Constants.ResultCollectionProcessorItems]) {
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105 | var guid = obj["GUID"].ToString();
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106 | var parameters = obj[Constants.Parameters];
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107 | var type = Mapper.StaticCache.GetType(new Guid(guid));
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108 | var rcp = (IResultCollectionProcessor)Activator.CreateInstance(type);
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109 | var rcpItem = JsonItemConverter.Extract(rcp);
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110 |
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111 | foreach (JObject param in parameters) {
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112 | var path = param[nameof(IJsonItem.Path)].ToString();
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113 | foreach (var item in rcpItem)
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114 | if (item.Path == path)
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115 | item.SetJObject(param);
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116 | }
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117 |
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118 | JsonItemConverter.Inject(rcp, rcpItem);
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119 | postProcessorList.Add(rcp);
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120 | }
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121 | return postProcessorList;
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122 | }
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123 |
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124 | private IEnumerable<IResultJsonItem> CollectResults() {
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125 | IList<IResultJsonItem> res = new List<IResultJsonItem>();
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126 | foreach(JObject obj in Template[Constants.Results]) {
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127 | var resultItem = new ResultJsonItem();
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128 | resultItem.SetJObject(obj);
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129 | res.Add(resultItem);
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130 | }
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131 | return res;
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132 | }
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133 |
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134 | private void CollectParameterizedItems(IOptimizer optimizer) {
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135 | IJsonItem root = JsonItemConverter.Extract(optimizer);
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136 | Objects.Add(root.Path, root);
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137 |
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138 | foreach (JObject obj in Template[Constants.Parameters]) {
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139 | string path = obj.Property(nameof(IJsonItem.Path)).Value.ToString();
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140 | foreach(var tmp in root) {
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141 | if(tmp.Path == path) {
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142 | tmp.SetJObject(obj);
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143 | Objects.Add(tmp.Path, tmp);
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144 | }
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145 | }
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146 | }
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147 | }
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148 |
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149 | private void MergeTemplateWithConfig() {
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150 | foreach (JObject obj in Config) {
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151 | // build item from config object
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152 | var prop = obj.Property("Path");
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153 | if (prop == null)
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154 | throw new ArgumentException("Path property is missing.");
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155 | string path = prop.Value.ToString();
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156 | // override default value
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157 | if (Objects.TryGetValue(path, out IJsonItem param)) {
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158 | // remove fixed template parameter from config => dont allow to copy them from concrete config
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159 | // TODO: shift this into JsonItems?
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160 | obj.Property(nameof(IIntervalRestrictedJsonItem<int>.Minimum))?.Remove();
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161 | obj.Property(nameof(IIntervalRestrictedJsonItem<int>.Maximum))?.Remove();
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162 | obj.Property(nameof(IConcreteRestrictedJsonItem<string>.ConcreteRestrictedItems))?.Remove();
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163 | obj.Property(nameof(IMatrixJsonItem.ColumnsResizable))?.Remove();
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164 | obj.Property(nameof(IMatrixJsonItem.RowsResizable))?.Remove();
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165 | obj.Property(nameof(IArrayJsonItem.Resizable))?.Remove();
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166 | // merge
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167 | param.SetJObject(obj);
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168 | } else throw new InvalidDataException($"No parameter with path='{path}' defined!");
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169 | }
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170 | }
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171 | #endregion
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172 | }
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173 | }
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