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f4bec00057
The change makes two principal implementation changes: [1] It removes the hard coded set of possible asset server client implementations, allowing any arbitrary implementation that has been identified to the PluginLoader as an appropriate extension. The extension point for asset server client extension is /OpenSim/AssetServerClient. All of the old configuration rules have been preserved, and any of the legacy configuration values will still work as they did before, except the implementation is now loaded as a plug-in, rather than as a hard-coded instantiation of a specific class. The re-hashing of IAssetServer as an extension of IPlugin made upgrading of the implementation classes a necessity. Caveat: I have not been able to meaningfully test the crypto-grid clients. I believe they should work correctly, but the refactoring necessary to handle plug-in based initialization (vs constructor-based initialisation) admits the possibility of a problem. [2] The asset cache implementation, previously introduce as a hard-code class instantiation is now implemented as an IPlugin. Once again the previous (configurationless) behavior has been preserved. But now it is possible for those interested in experimenting with cache technologies to do so simply by introducing a new extension for the asset cache extension point (/OpenSim/AssetCache). I've tested all of the configuration settings, after applying the patch to a newly extracted tree, and they seem to work OK.
120 lines
4.2 KiB
C#
120 lines
4.2 KiB
C#
/*
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* Copyright (c) Contributors, http://www.openmetaverse.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 OpenSim 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 log4net;
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using OpenSim.Data;
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namespace OpenSim.Framework.Communications.Cache
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{
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public class SQLAssetServer : AssetServerBase
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{
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private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
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#region IPlugin
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public override string Name
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{
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get { return "SQL"; }
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}
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public override string Version
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{
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get { return "1.0"; }
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}
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public override void Initialise(ConfigSettings p_set)
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{
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m_log.Debug("[SQLASSET] Plugin configured initialisation");
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Initialise(p_set.StandaloneAssetPlugin,p_set.StandaloneAssetSource);
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}
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#endregion
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public SQLAssetServer() {}
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public SQLAssetServer(string pluginName, string connect)
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{
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m_log.Debug("[SQLASSET] Direct constructor");
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Initialise(pluginName, connect);
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}
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public void Initialise(string pluginName, string connect)
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{
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AddPlugin(pluginName, connect);
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}
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public SQLAssetServer(IAssetDataPlugin assetProvider)
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{
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m_assetProvider = assetProvider;
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}
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public void AddPlugin(string FileName, string connect)
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{
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m_log.Info("[SQLAssetServer]: AssetStorage: Attempting to load " + FileName);
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Assembly pluginAssembly = Assembly.LoadFrom(FileName);
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foreach (Type pluginType in pluginAssembly.GetTypes())
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{
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if (!pluginType.IsAbstract)
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{
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Type typeInterface = pluginType.GetInterface("IAssetDataPlugin", true);
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if (typeInterface != null)
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{
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IAssetDataPlugin plug =
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(IAssetDataPlugin) Activator.CreateInstance(pluginAssembly.GetType(pluginType.ToString()));
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m_assetProvider = plug;
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m_assetProvider.Initialise(connect);
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m_log.Info("[AssetStorage]: " +
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"Added " + m_assetProvider.Name + " " +
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m_assetProvider.Version);
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}
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}
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}
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}
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public override void Close()
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{
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base.Close();
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}
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protected override AssetBase GetAsset(AssetRequest req)
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{
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return m_assetProvider.FetchAsset(req.AssetID);;
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}
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public override void StoreAsset(AssetBase asset)
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{
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m_assetProvider.CreateAsset(asset);
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}
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}
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}
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