Initial project's source code check-in.

WebsitePanel.VmConfig/Sources/WebsitePanel.VmConfig/ModuleLoader.cs

@@ -0,0 +1,124 @@
+// Copyright (c) 2011, Outercurve Foundation.
+// All rights reserved.
+//
+// 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  Outercurve Foundation  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 COPYRIGHT HOLDERS AND CONTRIBUTORS "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 COPYRIGHT HOLDER OR 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.Security.Policy;
+using System.Diagnostics;
+using System.Reflection;
+using System.Collections.Generic;
+using System.Text;
+using System.Runtime.Remoting.Lifetime;
+
+namespace WebsitePanel.VmConfig
+{
+	[Serializable]
+	internal class ModuleLoader : MarshalByRefObject
+	{
+		internal ExecutionResult RemoteRun(string typeName, ref ExecutionContext context)
+		{
+			if (string.IsNullOrEmpty(typeName))
+				throw new ArgumentNullException("typeName");
+
+			string[] parts = typeName.Split(',');
+			if (parts == null || parts.Length != 2)
+				throw new ArgumentException("Incorrect type name " + typeName);
+ 
+			Assembly assembly = typeof(ModuleLoader).Assembly;
+			string fileName = parts[1].Trim();
+			if (!fileName.EndsWith(".dll"))
+				fileName = fileName + ".dll"; 
+
+			string path = Path.Combine(Path.GetDirectoryName(assembly.Location), fileName);
+			assembly = Assembly.LoadFrom(path);
+			Type type = assembly.GetType(parts[0].Trim());
+			//Type type = Type.GetType(typeName);
+			if (type == null)
+			{
+				throw new Exception(string.Format("Type {0} not found", typeName));
+			}
+
+			IProvisioningModule module = Activator.CreateInstance(type) as IProvisioningModule;
+			if (module == null)
+			{
+				throw new Exception(string.Format("Module {0} not found", typeName));
+			}
+
+			return module.Run(ref context);
+		}
+
+		internal void AddTraceListener(TraceListener traceListener)
+		{
+			Trace.Listeners.Add(traceListener);
+		}
+
+		internal static ExecutionResult Run(string typeName, ref ExecutionContext context)
+		{
+			AppDomain domain = null;
+			try
+			{
+				Evidence securityInfo = AppDomain.CurrentDomain.Evidence;
+				AppDomainSetup info = new AppDomainSetup();
+				info.ApplicationBase = AppDomain.CurrentDomain.BaseDirectory;
+
+				domain = AppDomain.CreateDomain("Remote Domain", securityInfo, info);
+				ILease lease = domain.GetLifetimeService() as ILease;
+				if (lease != null)
+				{
+					lease.InitialLeaseTime = TimeSpan.Zero;
+				}
+				domain.UnhandledException += new UnhandledExceptionEventHandler(OnDomainUnhandledException);
+				ModuleLoader loader = (ModuleLoader)domain.CreateInstanceAndUnwrap(
+					typeof(ModuleLoader).Assembly.FullName,
+					typeof(ModuleLoader).FullName);
+
+				foreach (TraceListener listener in Trace.Listeners)
+				{
+					loader.AddTraceListener(listener);
+				}
+
+				ExecutionResult ret = loader.RemoteRun(typeName, ref context);
+				AppDomain.Unload(domain);
+				return ret;
+			}
+			catch (Exception)
+			{
+				if (domain != null)
+				{
+					AppDomain.Unload(domain);
+				}
+				throw;
+			}
+		}
+
+		static void OnDomainUnhandledException(object sender, UnhandledExceptionEventArgs e)
+		{
+			ServiceLog.WriteError("Remote application domain error", (Exception)e.ExceptionObject);
+		}
+	}
+}