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XAssetService.cs 7.4 KB

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  1. /*
  2. * Copyright (c) Contributors, http://opensimulator.org/
  3. * See CONTRIBUTORS.TXT for a full list of copyright holders.
  4. *
  5. * Redistribution and use in source and binary forms, with or without
  6. * modification, are permitted provided that the following conditions are met:
  7. * * Redistributions of source code must retain the above copyright
  8. * notice, this list of conditions and the following disclaimer.
  9. * * Redistributions in binary form must reproduce the above copyright
  10. * notice, this list of conditions and the following disclaimer in the
  11. * documentation and/or other materials provided with the distribution.
  12. * * Neither the name of the OpenSimulator Project nor the
  13. * names of its contributors may be used to endorse or promote products
  14. * derived from this software without specific prior written permission.
  15. *
  16. * THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY
  17. * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  18. * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  19. * DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY
  20. * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  21. * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  22. * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  23. * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  24. * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  25. * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  26. */
  27. using System;
  28. using System.Collections.Generic;
  29. using System.IO;
  30. using System.Reflection;
  31. using Nini.Config;
  32. using log4net;
  33. using OpenSim.Framework;
  34. using OpenSim.Data;
  35. using OpenSim.Services.Interfaces;
  36. using OpenMetaverse;
  37. namespace OpenSim.Services.AssetService
  38. {
  39. /// <summary>
  40. /// A de-duplicating asset service.
  41. /// </summary>
  42. public class XAssetService : XAssetServiceBase, IAssetService
  43. {
  44. private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
  45. protected static XAssetService m_RootInstance;
  46. public XAssetService(IConfigSource config) : this(config, "AssetService") {}
  47. public XAssetService(IConfigSource config, string configName) : base(config, configName)
  48. {
  49. if (m_RootInstance == null)
  50. {
  51. m_RootInstance = this;
  52. if (m_AssetLoader != null)
  53. {
  54. IConfig assetConfig = config.Configs[configName];
  55. if (assetConfig == null)
  56. throw new Exception("No AssetService configuration");
  57. string loaderArgs = assetConfig.GetString("AssetLoaderArgs", String.Empty);
  58. bool assetLoaderEnabled = assetConfig.GetBoolean("AssetLoaderEnabled", true);
  59. if (assetLoaderEnabled && !HasChainedAssetService)
  60. {
  61. m_log.DebugFormat("[XASSET SERVICE]: Loading default asset set from {0}", loaderArgs);
  62. m_AssetLoader.ForEachDefaultXmlAsset(
  63. loaderArgs,
  64. a =>
  65. {
  66. AssetBase existingAsset = Get(a.ID);
  67. // AssetMetadata existingMetadata = GetMetadata(a.ID);
  68. if (existingAsset == null || Util.SHA1Hash(existingAsset.Data) != Util.SHA1Hash(a.Data))
  69. {
  70. // m_log.DebugFormat("[ASSET]: Storing {0} {1}", a.Name, a.ID);
  71. Store(a);
  72. }
  73. });
  74. }
  75. m_log.Debug("[XASSET SERVICE]: Local asset service enabled");
  76. }
  77. }
  78. }
  79. public virtual AssetBase Get(string id)
  80. {
  81. // m_log.DebugFormat("[ASSET SERVICE]: Get asset for {0}", id);
  82. UUID assetID;
  83. if (!UUID.TryParse(id, out assetID))
  84. {
  85. m_log.WarnFormat("[XASSET SERVICE]: Could not parse requested asset id {0}", id);
  86. return null;
  87. }
  88. try
  89. {
  90. AssetBase asset = m_Database.GetAsset(assetID);
  91. if (asset != null)
  92. {
  93. return asset;
  94. }
  95. else if (HasChainedAssetService)
  96. {
  97. asset = m_ChainedAssetService.Get(id);
  98. if (asset != null)
  99. MigrateFromChainedService(asset);
  100. return asset;
  101. }
  102. return null;
  103. }
  104. catch (Exception e)
  105. {
  106. m_log.ErrorFormat("[XASSET SERVICE]: Exception getting asset {0} {1}", assetID, e);
  107. return null;
  108. }
  109. }
  110. public virtual AssetBase GetCached(string id)
  111. {
  112. return Get(id);
  113. }
  114. public virtual AssetMetadata GetMetadata(string id)
  115. {
  116. // m_log.DebugFormat("[XASSET SERVICE]: Get asset metadata for {0}", id);
  117. AssetBase asset = Get(id);
  118. if (asset != null)
  119. return asset.Metadata;
  120. else
  121. return null;
  122. }
  123. public virtual byte[] GetData(string id)
  124. {
  125. // m_log.DebugFormat("[XASSET SERVICE]: Get asset data for {0}", id);
  126. AssetBase asset = Get(id);
  127. if (asset != null)
  128. return asset.Data;
  129. else
  130. return null;
  131. }
  132. public virtual bool Get(string id, Object sender, AssetRetrieved handler)
  133. {
  134. //m_log.DebugFormat("[XASSET SERVICE]: Get asset async {0}", id);
  135. UUID assetID;
  136. if (!UUID.TryParse(id, out assetID))
  137. return false;
  138. AssetBase asset = Get(id);
  139. //m_log.DebugFormat("[XASSET SERVICE]: Got asset {0}", asset);
  140. handler(id, sender, asset);
  141. return true;
  142. }
  143. public virtual string Store(AssetBase asset)
  144. {
  145. if (!m_Database.ExistsAsset(asset.FullID))
  146. {
  147. // m_log.DebugFormat(
  148. // "[XASSET SERVICE]: Storing asset {0} {1}, bytes {2}", asset.Name, asset.FullID, asset.Data.Length);
  149. m_Database.StoreAsset(asset);
  150. }
  151. // else
  152. // {
  153. // m_log.DebugFormat(
  154. // "[XASSET SERVICE]: Not storing asset {0} {1}, bytes {2} as it already exists", asset.Name, asset.FullID, asset.Data.Length);
  155. // }
  156. return asset.ID;
  157. }
  158. public bool UpdateContent(string id, byte[] data)
  159. {
  160. return false;
  161. }
  162. public virtual bool Delete(string id)
  163. {
  164. // m_log.DebugFormat("[XASSET SERVICE]: Deleting asset {0}", id);
  165. UUID assetID;
  166. if (!UUID.TryParse(id, out assetID))
  167. return false;
  168. if (HasChainedAssetService)
  169. m_ChainedAssetService.Delete(id);
  170. return m_Database.Delete(id);
  171. }
  172. private void MigrateFromChainedService(AssetBase asset)
  173. {
  174. Store(asset);
  175. m_ChainedAssetService.Delete(asset.ID);
  176. }
  177. }
  178. }