/// <summary>
/// Uses the ExtensionPoint type to scan the plugins folder for extensions.
/// </summary>
/// <returns>
/// An enumerable collection that contains information on each extension that will help the loader
/// load them into the AppDomain. If no extensions are found, null is returned.</returns>
public ShredStartupInfoList ScanExtensions()
{
Platform.Log(LogLevel.Debug, this.GetType().ToString() + ":" + this.GetType().Name + " in AppDomain [" + AppDomain.CurrentDomain.FriendlyName + "]");
var shredInfoList = new ShredStartupInfoList();
var xp = new ShredExtensionPoint();
var shredObjects = xp.CreateExtensions();
foreach (var shredObject in shredObjects)
{
var shredType = shredObject.GetType();
var asShred = shredObject as IShred;
if (asShred == null)
{
Platform.Log(LogLevel.Debug, "Shred extension '{0}' does not implement IShred.", shredType.FullName);
continue;
}
var shredIsolation = shredType.GetCustomAttributes(typeof (ShredIsolationAttribute), true).OfType<ShredIsolationAttribute>().FirstOrDefault();
var shredIsolationLevel = shredIsolation == null ? ShredIsolationLevel.OwnAppDomain : shredIsolation.Level;
var assemblyPath = new Uri(shredType.Assembly.CodeBase);
var startupInfo = new ShredStartupInfo(assemblyPath, ((IShred)shredObject).GetDisplayName(), shredType.FullName, shredIsolationLevel);
shredInfoList.Add(startupInfo);
}
return shredInfoList;
}
private static void StartShreds(ShredStartupInfoList shredStartupInfoList)
{
if (null != shredStartupInfoList)
{
// create the data structure that will hold the shreds and their thread, etc. related objects
foreach (ShredStartupInfo shredStartupInfo in shredStartupInfoList)
{
if (null != shredStartupInfo)
{
// clone the shredStartupInfo structure into the current AppDomain, otherwise, once the StagingDomain
// has been unloaded, the shredStartupInfo structure will be destroyed
var newShredStartupInfo = new ShredStartupInfo(shredStartupInfo.AssemblyPath, shredStartupInfo.ShredName,
shredStartupInfo.ShredTypeName, shredStartupInfo.IsolationLevel);
// create the controller that will allow us to start and stop the shred
var shredController = new ShredController(newShredStartupInfo);
_shredInfoList.Add(shredController);
}
}
}
foreach (ShredController shredController in _shredInfoList)
{
shredController.Start();
}
}
/// <summary>
/// Uses the ExtensionPoint type to scan the plugins folder for extensions.
/// </summary>
/// <returns>
/// An enumerable collection that contains information on each extension that will help the loader
/// load them into the AppDomain. If no extensions are found, null is returned.</returns>
public ShredStartupInfoList ScanExtensions()
{
Platform.Log(LogLevel.Debug, this.GetType().ToString() + ":" + this.GetType().Name + " in AppDomain [" + AppDomain.CurrentDomain.FriendlyName + "]");
var shredInfoList = new ShredStartupInfoList();
var xp = new ShredExtensionPoint();
var shredObjects = xp.CreateExtensions();
foreach (var shredObject in shredObjects)
{
var shredType = shredObject.GetType();
var asShred = shredObject as IShred;
if (asShred == null)
{
Platform.Log(LogLevel.Debug, "Shred extension '{0}' does not implement IShred.", shredType.FullName);
continue;
}
var shredIsolation = shredType.GetCustomAttributes(typeof(ShredIsolationAttribute), true).OfType <ShredIsolationAttribute>().FirstOrDefault();
var shredIsolationLevel = shredIsolation == null ? ShredIsolationLevel.OwnAppDomain : shredIsolation.Level;
if (shredIsolationLevel != ShredIsolationLevel.None)
{
Platform.Log(LogLevel.Info, "Shred {0} is running in a seperate app domain", shredType.Name);
}
var assemblyPath = new Uri(shredType.Assembly.CodeBase);
var startupInfo = new ShredStartupInfo(assemblyPath, ((IShred)shredObject).GetDisplayName(), shredType.FullName, shredIsolationLevel);
shredInfoList.Add(startupInfo);
}
return(shredInfoList);
}
public ShredController(ShredStartupInfo startupInfo)
{
Platform.CheckForNullReference(startupInfo, "startupInfo");
_startupInfo = startupInfo;
_id = ShredController.NextId;
_runningState = RunningState.Stopped;
}
public ShredController(ShredStartupInfo startupInfo)
{
Platform.CheckForNullReference(startupInfo, "startupInfo");
_startupInfo = startupInfo;
_id = ShredController.NextId;
_runningState = RunningState.Stopped;
}
private static void StartShreds(ShredStartupInfoList shredStartupInfoList)
{
if (null != shredStartupInfoList)
{
// create the data structure that will hold the shreds and their thread, etc. related objects
foreach (ShredStartupInfo shredStartupInfo in shredStartupInfoList)
{
if (null != shredStartupInfo)
{
// clone the shredStartupInfo structure into the current AppDomain, otherwise, once the StagingDomain
// has been unloaded, the shredStartupInfo structure will be destroyed
ShredStartupInfo newShredStartupInfo = new ShredStartupInfo(shredStartupInfo.AssemblyPath, shredStartupInfo.ShredName, shredStartupInfo.ShredTypeName);
// create the controller that will allow us to start and stop the shred
ShredController shredController = new ShredController(newShredStartupInfo);
_shredInfoList.Add(shredController);
}
}
}
foreach (ShredController shredController in _shredInfoList)
{
shredController.Start();
}
}
