/// <summary>Initialized method to be called once in each application session by the caller planning to use the preprocessors.
/// This will try to load the plugins from the plugin folder, and try to initialize each of them.
/// Will report progess to the log information action.</summary>
/// <param name="pluginPath">The plugin path</param>
/// <param name="logManager">The log Manager.</param>
/// <param name="timeMeasure">The time Measure.</param>
private void Initialize(string pluginPath, LogManager logManager, ITimeMeasure timeMeasure)
{
timeMeasure.Start(false, SectionIdParts.Preprocessing, SectionIdParts.Initialize);
logManager.Information(ResourceStrings.PreprocessingInitializeStart.InvariantFormat(pluginPath));
// If no plugin path was provided, we use the assembly path.
if (string.IsNullOrWhiteSpace(pluginPath))
{
var assemblyFilInfo = new FileInfo(Assembly.GetCallingAssembly().FullName);
pluginPath = assemblyFilInfo.DirectoryName;
}
if (!string.IsNullOrWhiteSpace(pluginPath))
{
if (!Directory.Exists(pluginPath))
{
logManager.Error(
new DirectoryNotFoundException(pluginPath),
ResourceStrings.PreprocessingCouldNotFindThePluginPath.InvariantFormat(pluginPath));
return;
}
// And now use MEF to load all possible plugins.
logManager.Information(ResourceStrings.PreprocessingPluginPath.InvariantFormat(pluginPath));
using (var addInCatalog = new AggregateCatalog())
{
addInCatalog.Catalogs.Add(new DirectoryCatalog(pluginPath));
using (var addInContainer = new CompositionContainer(addInCatalog))
{
// Fill the imports of this object
try
{
addInContainer.ComposeParts(this);
}
catch (CompositionException compositionException)
{
logManager.Error(compositionException, ResourceStrings.PreprocessingLoadingError);
}
foreach (var registeredPreprocessingEngine in this.registeredPreprocessingEngines)
{
logManager.Information(
ResourceStrings.PreprocessingEngineFound.InvariantFormat(registeredPreprocessingEngine.Name));
}
}
}
}
logManager.Information(ResourceStrings.PreprocessingInitializeEnd);
timeMeasure.End(false, SectionIdParts.Preprocessing, SectionIdParts.Initialize);
}
internal void Enter(object[] args)
{
lock (_locker)
{
if (_inUse)
{
throw new Exception("can't repeat enter to active section");
}
_inUse = true;
_args = args;
_timeMeasure.Start();
}
}