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/*
* 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 System;
using System.IO;
using System.Collections.Generic;
using System.Reflection;
using log4net;
using Nini.Config;
using OpenSim.Services.Interfaces;
namespace OpenSim.Services.Base
{
public class ServiceBase
{
private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
public T LoadPlugin<T>(string dllName) where T:class
{
return LoadPlugin<T>(dllName, new Object[0]);
}
public T LoadPlugin<T>(string dllName, Object[] args) where T:class
{
// The path:type separator : is unfortunate because it collides
// with Windows paths like C:\...
// When the path provided includes the drive, this fails.
// Hence the root/noroot thing going on here.
string pathRoot = Path.GetPathRoot(dllName);
string noRoot = dllName.Substring(pathRoot.Length);
string[] parts = noRoot.Split(new char[] {':'});
dllName = pathRoot + parts[0];
string className = String.Empty;
if (parts.Length > 1)
className = parts[1];
return LoadPlugin<T>(dllName, className, args);
}
public T LoadPlugin<T>(string dllName, string className, Object[] args) where T:class
{
string interfaceName = typeof(T).ToString();
try
{
Assembly pluginAssembly = Assembly.LoadFrom(dllName);
// m_log.DebugFormat("[SERVICE BASE]: Found assembly {0}", dllName);
foreach (Type pluginType in pluginAssembly.GetTypes())
{
// m_log.DebugFormat("[SERVICE BASE]: Found type {0}", pluginType);
if (pluginType.IsPublic)
{
if (className != String.Empty &&
pluginType.ToString() !=
pluginType.Namespace + "." + className)
continue;
Type typeInterface =
pluginType.GetInterface(interfaceName);
if (typeInterface != null)
{
T plug = (T)Activator.CreateInstance(pluginType,
args);
return plug;
}
}
}
return null;
}
catch (Exception e)
{
List<string> strArgs = new List<string>();
foreach (Object arg in args)
strArgs.Add(arg.ToString());
m_log.Error(
string.Format(
"[SERVICE BASE]: Failed to load plugin {0} from {1} with args {2}",
interfaceName, dllName, string.Join(", ", strArgs.ToArray())), e);
return null;
}
}
public ServiceBase(IConfigSource config)
{
}
}
}
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