opensim-development – Blame information for rev 1
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1 | eva | 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 | using System; |
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28 | using System.Reflection; |
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29 | using System.Collections.Generic; |
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30 | using OpenSim.Framework; |
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31 | using OpenSim.Services.Interfaces; |
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32 | using OpenMetaverse; |
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33 | using log4net; |
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34 | using GridRegion = OpenSim.Services.Interfaces.GridRegion; |
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35 | |||
36 | namespace OpenSim.Region.CoreModules.ServiceConnectorsOut.Grid |
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37 | { |
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38 | public class RegionInfoCache |
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39 | { |
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40 | private const double CACHE_EXPIRATION_SECONDS = 300.0; // 5 minutes |
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41 | |||
42 | // private static readonly ILog m_log = |
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43 | // LogManager.GetLogger( |
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44 | // MethodBase.GetCurrentMethod().DeclaringType); |
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45 | |||
46 | internal struct ScopedRegionUUID |
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47 | { |
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48 | public UUID m_scopeID; |
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49 | public UUID m_regionID; |
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50 | public ScopedRegionUUID(UUID scopeID, UUID regionID) |
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51 | { |
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52 | m_scopeID = scopeID; |
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53 | m_regionID = regionID; |
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54 | } |
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55 | } |
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56 | |||
57 | internal struct ScopedRegionName |
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58 | { |
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59 | public UUID m_scopeID; |
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60 | public string m_name; |
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61 | public ScopedRegionName(UUID scopeID, string name) |
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62 | { |
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63 | m_scopeID = scopeID; |
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64 | m_name = name; |
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65 | } |
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66 | } |
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67 | |||
68 | internal struct ScopedRegionPosition |
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69 | { |
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70 | public UUID m_scopeID; |
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71 | public ulong m_regionHandle; |
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72 | public ScopedRegionPosition(UUID scopeID, ulong handle) |
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73 | { |
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74 | m_scopeID = scopeID; |
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75 | m_regionHandle = handle; |
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76 | } |
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77 | } |
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78 | |||
79 | private ExpiringCache<ScopedRegionUUID, GridRegion> m_UUIDCache; |
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80 | private ExpiringCache<ScopedRegionName, ScopedRegionUUID> m_NameCache; |
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81 | private ExpiringCache<ScopedRegionPosition, GridRegion> m_PositionCache; |
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82 | |||
83 | public RegionInfoCache() |
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84 | { |
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85 | m_UUIDCache = new ExpiringCache<ScopedRegionUUID, GridRegion>(); |
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86 | m_NameCache = new ExpiringCache<ScopedRegionName, ScopedRegionUUID>(); |
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87 | m_PositionCache = new ExpiringCache<ScopedRegionPosition, GridRegion>(); |
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88 | } |
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89 | |||
90 | public void Cache(GridRegion rinfo) |
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91 | { |
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92 | if (rinfo != null) |
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93 | this.Cache(rinfo.ScopeID,rinfo.RegionID,rinfo); |
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94 | } |
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95 | |||
96 | public void Cache(UUID scopeID, UUID regionID, GridRegion rinfo) |
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97 | { |
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98 | // for now, do not cache negative results; this is because |
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99 | // we need to figure out how to handle regions coming online |
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100 | // in a timely way |
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101 | if (rinfo == null) |
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102 | return; |
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103 | |||
104 | ScopedRegionUUID id = new ScopedRegionUUID(scopeID,regionID); |
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105 | |||
106 | // Cache even null accounts |
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107 | m_UUIDCache.AddOrUpdate(id, rinfo, CACHE_EXPIRATION_SECONDS); |
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108 | if (rinfo != null) |
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109 | { |
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110 | ScopedRegionName name = new ScopedRegionName(scopeID,rinfo.RegionName); |
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111 | m_NameCache.AddOrUpdate(name, id, CACHE_EXPIRATION_SECONDS); |
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112 | |||
113 | ScopedRegionPosition pos = new ScopedRegionPosition(scopeID, rinfo.RegionHandle); |
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114 | m_PositionCache.AddOrUpdate(pos, rinfo, CACHE_EXPIRATION_SECONDS); |
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115 | } |
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116 | } |
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117 | |||
118 | public GridRegion Get(UUID scopeID, UUID regionID, out bool inCache) |
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119 | { |
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120 | inCache = false; |
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121 | |||
122 | GridRegion rinfo = null; |
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123 | ScopedRegionUUID id = new ScopedRegionUUID(scopeID,regionID); |
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124 | if (m_UUIDCache.TryGetValue(id, out rinfo)) |
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125 | { |
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126 | inCache = true; |
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127 | return rinfo; |
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128 | } |
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129 | |||
130 | return null; |
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131 | } |
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132 | |||
133 | public GridRegion Get(UUID scopeID, ulong handle, out bool inCache) |
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134 | { |
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135 | inCache = false; |
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136 | |||
137 | GridRegion rinfo = null; |
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138 | ScopedRegionPosition pos = new ScopedRegionPosition(scopeID, handle); |
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139 | if (m_PositionCache.TryGetValue(pos, out rinfo)) |
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140 | { |
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141 | inCache = true; |
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142 | return rinfo; |
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143 | } |
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144 | |||
145 | return null; |
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146 | } |
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147 | |||
148 | |||
149 | public GridRegion Get(UUID scopeID, string name, out bool inCache) |
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150 | { |
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151 | inCache = false; |
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152 | |||
153 | ScopedRegionName sname = new ScopedRegionName(scopeID,name); |
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154 | |||
155 | ScopedRegionUUID id; |
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156 | if (m_NameCache.TryGetValue(sname, out id)) |
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157 | { |
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158 | GridRegion rinfo = null; |
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159 | if (m_UUIDCache.TryGetValue(id, out rinfo)) |
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160 | { |
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161 | inCache = true; |
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162 | return rinfo; |
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163 | } |
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164 | } |
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165 | |||
166 | return null; |
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167 | } |
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168 | } |
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169 | } |