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115 lines
4.2 KiB
C#
115 lines
4.2 KiB
C#
/*
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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 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.IO;
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using System.Collections.Generic;
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using System.Reflection;
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using log4net;
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using Mono.Addins;
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namespace OpenSim.Framework
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{
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public class PluginLoader <T> : IDisposable where T : IPlugin
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{
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private static readonly ILog log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
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private List<T> loaded = new List<T>();
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public PluginLoader (string dir)
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{
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AddPluginDir (dir);
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}
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public void AddPluginDir (string dir)
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{
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suppress_console_output_ (true);
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AddinManager.Initialize (dir);
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AddinManager.Registry.Update (null);
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suppress_console_output_ (false);
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}
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public delegate void Initialiser (IPlugin p);
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private void default_initialiser_ (IPlugin p) { p.Initialise(); }
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public void Load (string extpoint)
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{
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Load (extpoint, default_initialiser_);
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}
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public void Load (string extpoint, Initialiser initialize)
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{
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ExtensionNodeList ns = AddinManager.GetExtensionNodes(extpoint);
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foreach (TypeExtensionNode n in ns)
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{
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T p = (T) n.CreateInstance();
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initialize (p);
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Plugins.Add (p);
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log.Info("[PLUGINS]: Loading plugin " + n.Path + "/" + p.Name);
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}
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}
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public List<T> Plugins
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{
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get { return loaded; }
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}
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public void Dispose ()
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{
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foreach (T p in Plugins)
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p.Dispose ();
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}
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public void ClearCache()
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{
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// The Mono addin manager (in Mono.Addins.dll version 0.2.0.0) occasionally seems to corrupt its addin cache
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// Hence, as a temporary solution we'll remove it before each startup
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if (Directory.Exists("addin-db-000"))
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Directory.Delete("addin-db-000", true);
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if (Directory.Exists("addin-db-001"))
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Directory.Delete("addin-db-001", true);
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}
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private static TextWriter prev_console_;
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public void suppress_console_output_ (bool save)
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{
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if (save)
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{
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prev_console_ = System.Console.Out;
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System.Console.SetOut(new StreamWriter(Stream.Null));
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}
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else
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{
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if (prev_console_ != null)
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System.Console.SetOut(prev_console_);
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}
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}
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}
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}
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