clockwerk-opensim – Blame information for rev 1
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1 | vero | 1 | /* |
2 | * Copyright (c) Contributors, http://opensimulator.org/ |
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3 | * See CONTRIBUTORS.TXT for a full list of copyright holders. |
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4 | * |
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5 | * Redistribution and use in source and binary forms, with or without |
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6 | * modification, are permitted provided that the following conditions are met: |
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7 | * * Redistributions of source code must retain the above copyright |
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8 | * notice, this list of conditions and the following disclaimer. |
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9 | * * Redistributions in binary form must reproduce the above copyright |
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10 | * notice, this list of conditions and the following disclaimer in the |
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11 | * documentation and/or other materials provided with the distribution. |
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12 | * * Neither the name of the OpenSimulator Project nor the |
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13 | * names of its contributors may be used to endorse or promote products |
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14 | * derived from this software without specific prior written permission. |
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15 | * |
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16 | * THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY |
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17 | * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
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18 | * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
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19 | * DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY |
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20 | * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
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21 | * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
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22 | * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
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23 | * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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24 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
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25 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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26 | */ |
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27 | |||
28 | using System; |
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29 | using System.Collections.Generic; |
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30 | using System.Threading; |
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31 | using OpenSim.Framework; |
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32 | using OpenMetaverse; |
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33 | |||
34 | namespace OpenSim.Region.CoreModules.ServiceConnectorsOut.Inventory |
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35 | { |
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36 | /// <summary> |
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37 | /// Cache root and system inventory folders to reduce number of potentially remote inventory calls and associated holdups. |
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38 | /// </summary> |
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39 | public class InventoryCache |
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40 | { |
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41 | private const double CACHE_EXPIRATION_SECONDS = 3600.0; // 1 hour |
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42 | |||
43 | private static ExpiringCache<UUID, InventoryFolderBase> m_RootFolders = new ExpiringCache<UUID, InventoryFolderBase>(); |
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44 | private static ExpiringCache<UUID, Dictionary<AssetType, InventoryFolderBase>> m_FolderTypes = new ExpiringCache<UUID, Dictionary<AssetType, InventoryFolderBase>>(); |
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45 | private static ExpiringCache<UUID, InventoryCollection> m_Inventories = new ExpiringCache<UUID, InventoryCollection>(); |
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46 | |||
47 | public void Cache(UUID userID, InventoryFolderBase root) |
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48 | { |
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49 | m_RootFolders.AddOrUpdate(userID, root, CACHE_EXPIRATION_SECONDS); |
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50 | } |
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51 | |||
52 | public InventoryFolderBase GetRootFolder(UUID userID) |
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53 | { |
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54 | InventoryFolderBase root = null; |
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55 | if (m_RootFolders.TryGetValue(userID, out root)) |
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56 | return root; |
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57 | |||
58 | return null; |
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59 | } |
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60 | |||
61 | public void Cache(UUID userID, AssetType type, InventoryFolderBase folder) |
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62 | { |
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63 | Dictionary<AssetType, InventoryFolderBase> ff = null; |
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64 | if (!m_FolderTypes.TryGetValue(userID, out ff)) |
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65 | { |
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66 | ff = new Dictionary<AssetType, InventoryFolderBase>(); |
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67 | m_FolderTypes.Add(userID, ff, CACHE_EXPIRATION_SECONDS); |
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68 | } |
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69 | |||
70 | // We need to lock here since two threads could potentially retrieve the same dictionary |
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71 | // and try to add a folder for that type simultaneously. Dictionary<>.Add() is not described as thread-safe in the SDK |
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72 | // even if the folders are identical. |
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73 | lock (ff) |
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74 | { |
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75 | if (!ff.ContainsKey(type)) |
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76 | ff.Add(type, folder); |
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77 | } |
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78 | } |
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79 | |||
80 | public InventoryFolderBase GetFolderForType(UUID userID, AssetType type) |
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81 | { |
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82 | Dictionary<AssetType, InventoryFolderBase> ff = null; |
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83 | if (m_FolderTypes.TryGetValue(userID, out ff)) |
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84 | { |
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85 | InventoryFolderBase f = null; |
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86 | |||
87 | lock (ff) |
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88 | { |
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89 | if (ff.TryGetValue(type, out f)) |
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90 | return f; |
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91 | } |
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92 | } |
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93 | |||
94 | return null; |
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95 | } |
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96 | |||
97 | public void Cache(UUID userID, InventoryCollection inv) |
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98 | { |
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99 | m_Inventories.AddOrUpdate(userID, inv, 120); |
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100 | } |
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101 | |||
102 | public InventoryCollection GetFolderContent(UUID userID, UUID folderID) |
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103 | { |
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104 | InventoryCollection inv = null; |
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105 | InventoryCollection c; |
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106 | if (m_Inventories.TryGetValue(userID, out inv)) |
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107 | { |
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108 | c = new InventoryCollection(); |
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109 | c.UserID = userID; |
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110 | |||
111 | c.Folders = inv.Folders.FindAll(delegate(InventoryFolderBase f) |
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112 | { |
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113 | return f.ParentID == folderID; |
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114 | }); |
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115 | c.Items = inv.Items.FindAll(delegate(InventoryItemBase i) |
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116 | { |
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117 | return i.Folder == folderID; |
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118 | }); |
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119 | return c; |
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120 | } |
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121 | return null; |
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122 | } |
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123 | |||
124 | public List<InventoryItemBase> GetFolderItems(UUID userID, UUID folderID) |
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125 | { |
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126 | InventoryCollection inv = null; |
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127 | if (m_Inventories.TryGetValue(userID, out inv)) |
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128 | { |
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129 | List<InventoryItemBase> items = inv.Items.FindAll(delegate(InventoryItemBase i) |
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130 | { |
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131 | return i.Folder == folderID; |
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132 | }); |
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133 | return items; |
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134 | } |
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135 | return null; |
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136 | } |
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137 | } |
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138 | } |