CoreAssetCache.cs 4.3 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 log4net;
  28. using System;
  29. using System.IO;
  30. using System.Collections.Generic;
  31. using System.Reflection;
  32. using Nini.Config;
  33. using OpenSim.Framework;
  34. using OpenSim.Region.Framework.Interfaces;
  35. using OpenSim.Region.Framework.Scenes;
  36. using OpenSim.Services.Interfaces;
  37. namespace OpenSim.Region.CoreModules.Asset
  38. {
  39. public class CoreAssetCache : ISharedRegionModule, IImprovedAssetCache
  40. {
  41. private static readonly ILog m_log =
  42. LogManager.GetLogger(
  43. MethodBase.GetCurrentMethod().DeclaringType);
  44. private bool m_Enabled = false;
  45. private Cache m_Cache = new Cache(CacheMedium.Memory,
  46. CacheStrategy.Aggressive,
  47. CacheFlags.AllowUpdate);
  48. public string Name
  49. {
  50. get { return "CoreAssetCache"; }
  51. }
  52. public Type ReplaceableInterface
  53. {
  54. get { return null; }
  55. }
  56. public void Initialise(IConfigSource source)
  57. {
  58. IConfig moduleConfig = source.Configs["Modules"];
  59. if (moduleConfig != null)
  60. {
  61. string name = moduleConfig.GetString("AssetCaching");
  62. m_log.DebugFormat("[XXX] name = {0} (this module's name: {1}", name, Name);
  63. if (name == Name)
  64. {
  65. IConfig assetConfig = source.Configs["AssetCache"];
  66. if (assetConfig == null)
  67. {
  68. m_log.Error("[ASSET CACHE]: AssetCache missing from OpenSim.ini");
  69. return;
  70. }
  71. m_Enabled = true;
  72. m_log.Info("[ASSET CACHE]: Core asset cache enabled");
  73. m_Cache.Size = assetConfig.GetInt("CacheBuckets", 32768);
  74. }
  75. }
  76. }
  77. public void PostInitialise()
  78. {
  79. }
  80. public void Close()
  81. {
  82. }
  83. public void AddRegion(Scene scene)
  84. {
  85. if (m_Enabled)
  86. scene.RegisterModuleInterface<IImprovedAssetCache>(this);
  87. }
  88. public void RemoveRegion(Scene scene)
  89. {
  90. }
  91. public void RegionLoaded(Scene scene)
  92. {
  93. }
  94. ////////////////////////////////////////////////////////////
  95. // IImprovedAssetCache
  96. //
  97. public void Cache(AssetBase asset)
  98. {
  99. if (asset != null)
  100. m_Cache.Store(asset.ID, asset);
  101. }
  102. public AssetBase Get(string id)
  103. {
  104. return (AssetBase)m_Cache.Get(id);
  105. }
  106. public void Expire(string id)
  107. {
  108. m_Cache.Invalidate(id);
  109. }
  110. public void Clear()
  111. {
  112. m_Cache.Clear();
  113. }
  114. }
  115. }