add TestsAssetCache using .net MemoryCache to tests only

OpenSim/Tests/Common/TestsAssetCache.cs

@@ -0,0 +1,131 @@
+/*
+ * Copyright (c) Contributors, http://opensimulator.org/
+ * See CONTRIBUTORS.TXT for a full list of copyright holders.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above copyright
+ *       notice, this list of conditions and the following disclaimer in the
+ *       documentation and/or other materials provided with the distribution.
+ *     * Neither the name of the OpenSimulator Project nor the
+ *       names of its contributors may be used to endorse or promote products
+ *       derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+using log4net;
+using System;
+using System.Reflection;
+using System.Runtime.Caching;
+using Nini.Config;
+using OpenSim.Framework;
+using OpenSim.Region.Framework.Interfaces;
+using OpenSim.Region.Framework.Scenes;
+
+namespace OpenSim.Tests.Common
+{
+    public class TestsAssetCache : ISharedRegionModule, IAssetCache
+    {
+        private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
+
+        private bool m_Enabled;
+        private MemoryCache m_Cache;
+
+        public string Name
+        {
+            get { return "TestsAssetCache"; }
+        }
+
+        public Type ReplaceableInterface
+        {
+            get { return null; }
+        }
+
+        public void Initialise(IConfigSource source)
+        {
+            m_Cache = MemoryCache.Default;
+            m_Enabled = true;
+        }
+
+        public void PostInitialise()
+        {
+        }
+
+        public void Close()
+        {
+        }
+
+        public void AddRegion(Scene scene)
+        {
+            if (m_Enabled)
+                scene.RegisterModuleInterface<IAssetCache>(this);
+        }
+
+        public void RemoveRegion(Scene scene)
+        {
+        }
+
+        public void RegionLoaded(Scene scene)
+        {
+        }
+
+        ////////////////////////////////////////////////////////////
+        // IAssetCache
+        //
+        public bool Check(string id)
+        {
+            // XXX This is probably not an efficient implementation.
+            AssetBase asset;
+            if (!Get(id, out asset))
+                return false;
+            return asset != null;
+        }
+
+        public void Cache(AssetBase asset, bool replace = true)
+        {
+            if (asset != null)
+            {
+                CacheItemPolicy policy = new CacheItemPolicy();
+                m_Cache.Set(asset.ID, asset, policy);
+            }
+        }
+
+        public void CacheNegative(string id)
+        {
+            // We don't do negative caching
+        }
+
+        public bool Get(string id, out AssetBase asset)
+        {
+            asset = (AssetBase)m_Cache.Get(id);
+            return true;
+        }
+
+        public void Expire(string id)
+        {
+            m_Cache.Remove(id);
+        }
+
+        public void Clear()
+        {
+        }
+        /*
+        public bool UpdateContent(string id, byte[] data)
+        {
+            return false;
+        }
+        */
+    }
+}