1 | #region License Information
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2 | /* HeuristicLab
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3 | * Copyright (C) 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.IO;
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25 | using System.IO.Compression;
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26 | using System.Linq;
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27 | using System.Text;
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28 | using System.Threading;
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29 | using HEAL.Attic;
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30 | using HeuristicLab.Persistence.Core;
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31 | using HeuristicLab.Persistence.Core.Tokens;
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32 | using HeuristicLab.Persistence.Interfaces;
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33 | using HeuristicLab.Tracing;
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34 |
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35 | namespace HeuristicLab.Persistence.Default.Xml {
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36 |
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37 |
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38 | /// <summary>
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39 | /// Main entry point of persistence to XML. Use the static methods to serialize
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40 | /// to a file or to a stream.
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41 | /// </summary>
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42 | public class XmlGenerator : GeneratorBase<string> {
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43 |
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44 | protected int depth;
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45 | protected int Depth {
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46 | get {
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47 | return depth;
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48 | }
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49 | set {
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50 | depth = value;
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51 | prefix = new string(' ', depth * 2);
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52 | }
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53 | }
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54 |
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55 | protected string prefix;
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56 |
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57 |
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58 | /// <summary>
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59 | /// Initializes a new instance of the <see cref="XmlGenerator"/> class.
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60 | /// </summary>
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61 | public XmlGenerator() {
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62 | Depth = 0;
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63 | }
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64 |
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65 | protected enum NodeType { Start, End, Inline };
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66 |
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67 | protected static void AddXmlTagContent(StringBuilder sb, string name, Dictionary<string, string> attributes) {
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68 | sb.Append(name);
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69 | foreach (var attribute in attributes) {
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70 | if (attribute.Value != null && !string.IsNullOrEmpty(attribute.Value.ToString())) {
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71 | sb.Append(' ');
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72 | sb.Append(attribute.Key);
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73 | sb.Append("=\"");
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74 | sb.Append(attribute.Value);
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75 | sb.Append('"');
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76 | }
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77 | }
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78 | }
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79 |
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80 | protected static int AttributeLength(Dictionary<string, string> attributes) {
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81 | return attributes
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82 | .Where(kvp => !string.IsNullOrEmpty(kvp.Key) && !string.IsNullOrEmpty(kvp.Value))
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83 | .Select(kvp => kvp.Key.Length + kvp.Value.Length + 4).Sum();
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84 | }
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85 |
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86 | protected static void AddXmlStartTag(StringBuilder sb, string name, Dictionary<string, string> attributes) {
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87 | sb.Append('<');
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88 | AddXmlTagContent(sb, name, attributes);
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89 | sb.Append('>');
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90 | }
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91 |
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92 | protected static void AddXmlInlineTag(StringBuilder sb, string name, Dictionary<string, string> attributes) {
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93 | sb.Append('<');
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94 | AddXmlTagContent(sb, name, attributes);
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95 | sb.Append("/>");
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96 | }
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97 |
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98 | protected static void AddXmlEndTag(StringBuilder sb, string name) {
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99 | sb.Append("</");
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100 | sb.Append(name);
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101 | sb.Append(">");
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102 | }
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103 |
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104 | protected string CreateNodeStart(string name, Dictionary<string, string> attributes) {
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105 | StringBuilder sb = new StringBuilder(prefix.Length + name.Length + 4
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106 | + AttributeLength(attributes));
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107 | sb.Append(prefix);
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108 | Depth += 1;
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109 | AddXmlStartTag(sb, name, attributes);
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110 | sb.Append("\r\n");
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111 | return sb.ToString();
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112 | }
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113 |
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114 | private static Dictionary<string, string> emptyDict = new Dictionary<string, string>();
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115 | protected string CreateNodeStart(string name) {
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116 | return CreateNodeStart(name, emptyDict);
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117 | }
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118 |
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119 | protected string CreateNodeEnd(string name) {
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120 | Depth -= 1;
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121 | StringBuilder sb = new StringBuilder(prefix.Length + name.Length + 5);
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122 | sb.Append(prefix);
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123 | AddXmlEndTag(sb, name);
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124 | sb.Append("\r\n");
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125 | return sb.ToString();
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126 | }
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127 |
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128 | protected string CreateNode(string name, Dictionary<string, string> attributes) {
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129 | StringBuilder sb = new StringBuilder(prefix.Length + name.Length + 5
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130 | + AttributeLength(attributes));
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131 | sb.Append(prefix);
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132 | AddXmlInlineTag(sb, name, attributes);
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133 | sb.Append("\r\n");
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134 | return sb.ToString();
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135 | }
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136 |
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137 | protected string CreateNode(string name, Dictionary<string, string> attributes, string content) {
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138 | StringBuilder sb = new StringBuilder(
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139 | prefix.Length + name.Length + AttributeLength(attributes) + 2
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140 | + content.Length + name.Length + 5);
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141 | sb.Append(prefix);
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142 | AddXmlStartTag(sb, name, attributes);
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143 | sb.Append(content);
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144 | sb.Append("</").Append(name).Append(">\r\n");
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145 | return sb.ToString();
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146 | }
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147 |
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148 | /// <summary>
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149 | /// Formats the specified begin token.
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150 | /// </summary>
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151 | /// <param name="beginToken">The begin token.</param>
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152 | /// <returns>The token in serialized form.</returns>
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153 | protected override string Format(BeginToken beginToken) {
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154 | var dict = new Dictionary<string, string> {
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155 | {"name", beginToken.Name},
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156 | {"typeId", beginToken.TypeId.ToString()},
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157 | {"id", beginToken.Id.ToString()}};
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158 | AddTypeInfo(beginToken.TypeId, dict);
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159 | return CreateNodeStart(XmlStringConstants.COMPOSITE, dict);
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160 |
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161 | }
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162 |
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163 | protected void AddTypeInfo(int typeId, Dictionary<string, string> dict) {
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164 | if (lastTypeToken != null) {
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165 | if (typeId == lastTypeToken.Id) {
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166 | dict.Add("typeName", lastTypeToken.TypeName);
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167 | dict.Add("serializer", lastTypeToken.Serializer);
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168 | lastTypeToken = null;
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169 | } else {
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170 | FlushTypeToken();
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171 | }
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172 | }
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173 | }
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174 |
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175 | /// <summary>
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176 | /// Formats the specified end token.
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177 | /// </summary>
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178 | /// <param name="endToken">The end token.</param>
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179 | /// <returns>The token in serialized form.</returns>
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180 | protected override string Format(EndToken endToken) {
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181 | return CreateNodeEnd(XmlStringConstants.COMPOSITE);
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182 | }
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183 |
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184 | /// <summary>
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185 | /// Formats the specified data token.
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186 | /// </summary>
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187 | /// <param name="dataToken">The data token.</param>
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188 | /// <returns>The token in serialized form.</returns>
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189 | protected override string Format(PrimitiveToken dataToken) {
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190 | var dict = new Dictionary<string, string> {
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191 | {"typeId", dataToken.TypeId.ToString()},
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192 | {"name", dataToken.Name},
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193 | {"id", dataToken.Id.ToString()}};
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194 | AddTypeInfo(dataToken.TypeId, dict);
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195 | return CreateNode(XmlStringConstants.PRIMITIVE, dict,
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196 | ((XmlString)dataToken.SerialData).Data);
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197 | }
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198 |
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199 | /// <summary>
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200 | /// Formats the specified ref token.
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201 | /// </summary>
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202 | /// <param name="refToken">The ref token.</param>
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203 | /// <returns>The token in serialized form.</returns>
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204 | protected override string Format(ReferenceToken refToken) {
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205 | return CreateNode(XmlStringConstants.REFERENCE,
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206 | new Dictionary<string, string> {
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207 | {"ref", refToken.Id.ToString()},
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208 | {"name", refToken.Name}});
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209 | }
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210 |
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211 | /// <summary>
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212 | /// Formats the specified null ref token.
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213 | /// </summary>
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214 | /// <param name="nullRefToken">The null ref token.</param>
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215 | /// <returns>The token in serialized form.</returns>
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216 | protected override string Format(NullReferenceToken nullRefToken) {
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217 | return CreateNode(XmlStringConstants.NULL,
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218 | new Dictionary<string, string>{
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219 | {"name", nullRefToken.Name}});
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220 | }
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221 |
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222 | /// <summary>
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223 | /// Formats the specified meta info begin token.
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224 | /// </summary>
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225 | /// <param name="metaInfoBeginToken">The meta info begin token.</param>
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226 | /// <returns>The token in serialized form.</returns>
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227 | protected override string Format(MetaInfoBeginToken metaInfoBeginToken) {
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228 | return CreateNodeStart(XmlStringConstants.METAINFO);
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229 | }
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230 |
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231 | /// <summary>
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232 | /// Formats the specified meta info end token.
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233 | /// </summary>
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234 | /// <param name="metaInfoEndToken">The meta info end token.</param>
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235 | /// <returns>The token in serialized form.</returns>
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236 | protected override string Format(MetaInfoEndToken metaInfoEndToken) {
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237 | return CreateNodeEnd(XmlStringConstants.METAINFO);
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238 | }
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239 |
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240 | protected TypeToken lastTypeToken;
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241 | /// <summary>
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242 | /// Formats the specified token.
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243 | /// </summary>
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244 | /// <param name="token">The token.</param>
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245 | /// <returns>The token in serialized form.</returns>
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246 | protected override string Format(TypeToken token) {
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247 | lastTypeToken = token;
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248 | return "";
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249 | }
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250 |
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251 | protected string FlushTypeToken() {
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252 | if (lastTypeToken == null)
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253 | return "";
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254 | try {
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255 | return CreateNode(XmlStringConstants.TYPE,
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256 | new Dictionary<string, string> {
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257 | {"id", lastTypeToken.Id.ToString()},
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258 | {"typeName", lastTypeToken.TypeName },
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259 | {"serializer", lastTypeToken.Serializer }});
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260 | } finally {
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261 | lastTypeToken = null;
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262 | }
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263 | }
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264 |
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265 | /// <summary>
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266 | /// Formats the specified type cache.
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267 | /// </summary>
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268 | /// <param name="typeCache">The type cache.</param>
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269 | /// <returns>An enumerable of formatted type cache tags.</returns>
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270 | public IEnumerable<string> Format(List<TypeMapping> typeCache) {
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271 | yield return CreateNodeStart(XmlStringConstants.TYPECACHE);
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272 | foreach (var mapping in typeCache)
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273 | yield return CreateNode(
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274 | XmlStringConstants.TYPE,
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275 | mapping.GetDict());
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276 | yield return CreateNodeEnd(XmlStringConstants.TYPECACHE);
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277 | }
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278 |
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279 | /// <summary>
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280 | /// Serialize an object into a file.
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281 | /// The XML configuration is obtained from the <c>ConfigurationService</c>.
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282 | /// The file is actually a ZIP file.
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283 | /// Compression level is set to 5 and needed assemblies are not included.
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284 | /// </summary>
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285 | /// <param name="o">The object.</param>
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286 | /// <param name="filename">The filename.</param>
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287 | public static void Serialize(object o, string filename, CancellationToken cancellationToken = default(CancellationToken)) {
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288 | Serialize(o, filename, ConfigurationService.Instance.GetConfiguration(new XmlFormat()), false, CompressionLevel.Optimal, cancellationToken);
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289 | }
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290 |
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291 | /// <summary>
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292 | /// Serialize an object into a file.
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293 | /// The XML configuration is obtained from the <c>ConfigurationService</c>.
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294 | /// Needed assemblies are not included.
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295 | /// </summary>
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296 | /// <param name="o">The object.</param>
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297 | /// <param name="filename">The filename.</param>
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298 | /// <param name="compression">ZIP file compression level</param>
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299 | public static void Serialize(object o, string filename, CompressionLevel compression, CancellationToken cancellationToken = default(CancellationToken)) {
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300 | Serialize(o, filename, ConfigurationService.Instance.GetConfiguration(new XmlFormat()), false, compression, cancellationToken);
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301 | }
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302 |
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303 | /// <summary>
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304 | /// Serializes the specified object into a file.
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305 | /// Needed assemblies are not included, ZIP compression level is set to 5.
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306 | /// </summary>
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307 | /// <param name="obj">The object.</param>
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308 | /// <param name="filename">The filename.</param>
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309 | /// <param name="config">The configuration.</param>
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310 | public static void Serialize(object obj, string filename, Configuration config, CancellationToken cancellationToken = default(CancellationToken)) {
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311 | Serialize(obj, filename, config, false, CompressionLevel.Optimal, cancellationToken);
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312 | }
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313 |
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314 | private static void Serialize(object obj, Stream stream, Configuration config, bool includeAssemblies, CompressionLevel compression, CancellationToken cancellationToken = default(CancellationToken)) {
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315 | Core.Serializer serializer = new Core.Serializer(obj, config);
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316 | Serialize(stream, includeAssemblies, compression, serializer, cancellationToken);
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317 | }
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318 |
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319 | private static void Serialize(Stream stream, bool includeAssemblies, CompressionLevel compression, Core.Serializer serializer, CancellationToken cancellationToken = default(CancellationToken)) {
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320 | try {
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321 | cancellationToken.ThrowIfCancellationRequested();
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322 | DateTime start = DateTime.Now;
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323 | serializer.InterleaveTypeInformation = false;
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324 | XmlGenerator generator = new XmlGenerator();
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325 | using (ZipArchive zipArchive = new ZipArchive(stream, ZipArchiveMode.Create)) {
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326 | ZipArchiveEntry entry = zipArchive.CreateEntry("data.xml", compression);
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327 | using (StreamWriter writer = new StreamWriter(entry.Open())) {
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328 | foreach (ISerializationToken token in serializer) {
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329 | cancellationToken.ThrowIfCancellationRequested();
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330 | string line = generator.Format(token);
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331 | writer.Write(line);
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332 | }
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333 | }
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334 | entry = zipArchive.CreateEntry("typecache.xml", compression);
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335 | using (StreamWriter writer = new StreamWriter(entry.Open())) {
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336 | foreach (string line in generator.Format(serializer.TypeCache)) {
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337 | writer.Write(line);
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338 | }
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339 | }
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340 | if (includeAssemblies) {
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341 | foreach (string name in serializer.RequiredFiles) {
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342 | cancellationToken.ThrowIfCancellationRequested();
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343 | Uri uri = new Uri(name);
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344 | if (!uri.IsFile) {
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345 | Logger.Warn("cannot read non-local files");
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346 | continue;
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347 | }
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348 | entry = zipArchive.CreateEntry(Path.GetFileName(uri.PathAndQuery), compression);
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349 | using (BinaryWriter bw = new BinaryWriter(entry.Open())) {
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350 | using (FileStream reader = File.OpenRead(uri.PathAndQuery)) {
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351 | byte[] buffer = new byte[1024 * 1024];
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352 | while (true) {
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353 | cancellationToken.ThrowIfCancellationRequested();
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354 | int bytesRead = reader.Read(buffer, 0, 1024 * 1024);
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355 | if (bytesRead == 0)
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356 | break;
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357 | bw.Write(buffer, 0, bytesRead);
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358 | }
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359 | }
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360 | }
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361 | }
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362 | }
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363 | }
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364 | Logger.Info(String.Format("serialization took {0} seconds with compression level {1}",
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365 | (DateTime.Now - start).TotalSeconds, compression));
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366 | } catch (Exception) {
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367 | Logger.Warn("Exception caught, no data has been serialized.");
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368 | throw;
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369 | }
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370 | }
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371 |
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372 | /// <summary>
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373 | /// Serializes the specified object into a file.
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374 | /// </summary>
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375 | /// <param name="obj">The object.</param>
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376 | /// <param name="filename">The filename.</param>
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377 | /// <param name="config">The configuration.</param>
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378 | /// <param name="includeAssemblies">if set to <c>true</c> include needed assemblies.</param>
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379 | /// <param name="compression">The ZIP compression level.</param>
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380 | public static void Serialize(object obj, string filename, Configuration config, bool includeAssemblies, CompressionLevel compression, CancellationToken cancellationToken = default(CancellationToken)) {
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381 | string tempfile = null;
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382 | try {
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383 | tempfile = Path.GetTempFileName();
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384 |
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385 | using (FileStream stream = File.Create(tempfile)) {
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386 | Serialize(obj, stream, config, includeAssemblies, compression, cancellationToken);
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387 | }
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388 | // copy only if needed
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389 | File.Copy(tempfile, filename, true);
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390 | } catch (Exception) {
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391 | Logger.Warn("Exception caught, no data has been written.");
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392 | throw;
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393 | } finally {
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394 | if (tempfile != null && File.Exists(tempfile))
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395 | File.Delete(tempfile);
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396 | }
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397 | }
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398 |
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399 | /// <summary>
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400 | /// Serializes the specified object into a stream using the <see cref="XmlFormat"/>
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401 | /// obtained from the <see cref="ConfigurationService"/>.
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402 | /// </summary>
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403 | /// <param name="obj">The object.</param>
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404 | /// <param name="stream">The stream.</param>
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405 | /// <param name="compressionType">Type of compression, default is GZip.</param>
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406 | public static void Serialize(object obj, Stream stream, CompressionType compressionType = CompressionType.GZip, CancellationToken cancellationToken = default(CancellationToken)) {
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407 | Serialize(obj, stream, ConfigurationService.Instance.GetConfiguration(new XmlFormat()), compressionType, cancellationToken);
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408 | }
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409 |
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410 |
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411 | /// <summary>
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412 | /// Serializes the specified object into a stream.
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413 | /// </summary>
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414 | /// <param name="obj">The object.</param>
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415 | /// <param name="stream">The stream.</param>
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416 | /// <param name="config">The configuration.</param>
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417 | /// <param name="compressionType">Type of compression, default is GZip.</param>
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418 | public static void Serialize(object obj, Stream stream, Configuration config, CompressionType compressionType = CompressionType.GZip, CancellationToken cancellationToken = default(CancellationToken)) {
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419 | Serialize(obj, stream, config, false, compressionType, cancellationToken);
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420 | }
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421 |
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422 | /// <summary>
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423 | /// Serializes the specified object into a stream.
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424 | /// </summary>
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425 | /// <param name="obj">The object.</param>
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426 | /// <param name="stream">The stream.</param>
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427 | /// <param name="config">The configuration.</param>
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428 | /// <param name="includeAssemblies">if set to <c>true</c> include need assemblies.</param>
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429 | /// <param name="compressionType">Type of compression, default is GZip.</param>
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430 | public static void Serialize(object obj, Stream stream, Configuration config, bool includeAssemblies, CompressionType compressionType = CompressionType.GZip, CancellationToken cancellationToken = default(CancellationToken)) {
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431 | try {
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432 | Core.Serializer serializer = new Core.Serializer(obj, config);
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433 | if (compressionType == CompressionType.Zip) {
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434 | Serialize(obj, stream, config, includeAssemblies, CompressionLevel.Optimal, cancellationToken);
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435 | } else {
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436 | Serialize(stream, serializer, cancellationToken);
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437 | }
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438 | } catch (PersistenceException) {
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439 | throw;
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440 | } catch (Exception e) {
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441 | throw new PersistenceException("Unexpected exception during Serialization.", e);
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442 | }
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443 | }
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444 |
|
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445 | /// <summary>
|
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446 | /// Serializes the specified object into a stream.
|
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447 | /// </summary>
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448 | /// <param name="obj">The object.</param>
|
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449 | /// <param name="stream">The stream.</param>
|
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450 | /// <param name="config">The configuration.</param>
|
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451 | /// <param name="includeAssemblies">if set to <c>true</c> include need assemblies.</param>
|
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452 | /// <param name="types">The list of all serialized types.</param>
|
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453 | /// <param name="compressionType">Type of compression, default is GZip.</param>
|
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454 | public static void Serialize(object obj, Stream stream, Configuration config, bool includeAssemblies, out IEnumerable<Type> types,
|
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455 | CompressionType compressionType = CompressionType.GZip, CancellationToken cancellationToken = default(CancellationToken)) {
|
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456 | try {
|
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457 | Core.Serializer serializer = new Core.Serializer(obj, config);
|
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458 | if (compressionType == CompressionType.Zip) {
|
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459 | Serialize(stream, includeAssemblies, CompressionLevel.Optimal, serializer, cancellationToken);
|
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460 | } else {
|
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461 | Serialize(stream, serializer, cancellationToken);
|
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462 | }
|
---|
463 | types = serializer.SerializedTypes;
|
---|
464 | } catch (PersistenceException) {
|
---|
465 | throw;
|
---|
466 | } catch (Exception e) {
|
---|
467 | throw new PersistenceException("Unexpected exception during Serialization.", e);
|
---|
468 | }
|
---|
469 | }
|
---|
470 |
|
---|
471 | private static void Serialize(Stream stream, Core.Serializer serializer, CancellationToken cancellationToken = default(CancellationToken)) {
|
---|
472 | cancellationToken.ThrowIfCancellationRequested();
|
---|
473 | using (StreamWriter writer = new StreamWriter(new GZipStream(stream, CompressionMode.Compress))) {
|
---|
474 | serializer.InterleaveTypeInformation = true;
|
---|
475 | XmlGenerator generator = new XmlGenerator();
|
---|
476 | foreach (ISerializationToken token in serializer) {
|
---|
477 | cancellationToken.ThrowIfCancellationRequested();
|
---|
478 | string line = generator.Format(token);
|
---|
479 | writer.Write(line);
|
---|
480 | }
|
---|
481 | writer.Flush();
|
---|
482 | }
|
---|
483 | }
|
---|
484 | }
|
---|
485 | } |
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