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+/*
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+ * Copyright (c) Contributors, http://opensimulator.org/
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+ * See CONTRIBUTORS.TXT for a full list of copyright holders.
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+ *
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+ * Redistribution and use in source and binary forms, with or without
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+ * modification, are permitted provided that the following conditions are met:
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+ * * Redistributions of source code must retain the above copyright
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+ * notice, this list of conditions and the following disclaimer.
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+ * * Redistributions in binary form must reproduce the above copyright
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+ * notice, this list of conditions and the following disclaimer in the
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+ * documentation and/or other materials provided with the distribution.
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+ * * Neither the name of the OpenSimulator Project nor the
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+ * names of its contributors may be used to endorse or promote products
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+ * derived from this software without specific prior written permission.
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+ *
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+ * THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY
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+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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+ * DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY
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+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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+ */
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+using System;
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+using System.Reflection;
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+using System.Collections.Generic;
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+using OpenSim.Framework;
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+using OpenSim.Services.Interfaces;
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+using OpenMetaverse;
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+using log4net;
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+using GridRegion = OpenSim.Services.Interfaces.GridRegion;
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+
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+namespace OpenSim.Region.CoreModules.ServiceConnectorsOut.Grid
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+{
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+ public class RegionInfoCache
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+ {
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+ private const double CACHE_EXPIRATION_SECONDS = 300.0; // 5 minutes
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+
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+// private static readonly ILog m_log =
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+// LogManager.GetLogger(
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+// MethodBase.GetCurrentMethod().DeclaringType);
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+
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+ internal struct ScopedRegionUUID
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+ {
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+ public UUID m_scopeID;
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+ public UUID m_regionID;
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+ public ScopedRegionUUID(UUID scopeID, UUID regionID)
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+ {
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+ m_scopeID = scopeID;
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+ m_regionID = regionID;
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+ }
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+ }
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+
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+ internal struct ScopedRegionName
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+ {
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+ public UUID m_scopeID;
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+ public string m_name;
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+ public ScopedRegionName(UUID scopeID, string name)
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+ {
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+ m_scopeID = scopeID;
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+ m_name = name;
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+ }
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+ }
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+
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+ private ExpiringCache<ScopedRegionUUID, GridRegion> m_UUIDCache;
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+ private ExpiringCache<ScopedRegionName, ScopedRegionUUID> m_NameCache;
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+
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+ public RegionInfoCache()
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+ {
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+ m_UUIDCache = new ExpiringCache<ScopedRegionUUID, GridRegion>();
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+ m_NameCache = new ExpiringCache<ScopedRegionName, ScopedRegionUUID>();
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+ }
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+
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+ public void Cache(GridRegion rinfo)
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+ {
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+ if (rinfo != null)
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+ this.Cache(rinfo.ScopeID,rinfo.RegionID,rinfo);
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+ }
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+
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+ public void Cache(UUID scopeID, UUID regionID, GridRegion rinfo)
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+ {
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+ // for now, do not cache negative results; this is because
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+ // we need to figure out how to handle regions coming online
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+ // in a timely way
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+ if (rinfo == null)
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+ return;
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+
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+ ScopedRegionUUID id = new ScopedRegionUUID(scopeID,regionID);
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+
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+ // Cache even null accounts
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+ m_UUIDCache.AddOrUpdate(id, rinfo, CACHE_EXPIRATION_SECONDS);
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+ if (rinfo != null)
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+ {
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+ ScopedRegionName name = new ScopedRegionName(scopeID,rinfo.RegionName);
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+ m_NameCache.AddOrUpdate(name, id, CACHE_EXPIRATION_SECONDS);
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+ }
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+ }
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+
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+ public GridRegion Get(UUID scopeID, UUID regionID, out bool inCache)
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+ {
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+ inCache = false;
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+
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+ GridRegion rinfo = null;
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+ ScopedRegionUUID id = new ScopedRegionUUID(scopeID,regionID);
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+ if (m_UUIDCache.TryGetValue(id, out rinfo))
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+ {
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+ inCache = true;
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+ return rinfo;
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+ }
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+
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+ return null;
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+ }
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+
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+ public GridRegion Get(UUID scopeID, string name, out bool inCache)
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+ {
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+ inCache = false;
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+
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+ ScopedRegionName sname = new ScopedRegionName(scopeID,name);
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+
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+ ScopedRegionUUID id;
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+ if (m_NameCache.TryGetValue(sname, out id))
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+ {
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+ GridRegion rinfo = null;
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+ if (m_UUIDCache.TryGetValue(id, out rinfo))
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+ {
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+ inCache = true;
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+ return rinfo;
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+ }
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+ }
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+
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+ return null;
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+ }
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+ }
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+}
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Diva Canto