private List <ProcessorDTO> LoadProcessors(string processorPath)
{
List <ProcessorDTO> lstProcessors = new List <ProcessorDTO>();
DirectoryInfo di = new DirectoryInfo(processorPath);
FileInfo[] fileInfos = di.GetFiles("*.dll");
foreach (FileInfo fi in fileInfos)
{
//using (var fs = new FileStream(fi.FullName, FileMode.Open, FileAccess.Read))
//{
try
{
var context = new CollectibleAssemblyLoadContext(processorPath);
//var assembly = context.LoadFromStream(fs);
var assembly = context.LoadFromAssemblyPath(fi.FullName);
//Can have multiple processors implmented in a single assembly
foreach (Type type in assembly.GetTypes())
{
if (typeof(DataProcessor).IsAssignableFrom(type))
{
DataProcessor result = Activator.CreateInstance(type) as DataProcessor;
if (result != null)
{
ProcessorDTO pdto = new ProcessorDTO(result);
pdto.Path = fi.FullName;
lstProcessors.Add(pdto);
}
}
}
context.Unload();
GC.Collect();
GC.WaitForPendingFinalizers();
}
//Handle unloadable libraries
catch (Exception ex)
{
string msg = ex.Message;
}
//}
}
return(lstProcessors);
}
private IReadOnlyCollection <string> FindPluginsInAssemblies(string pluginsPath, string[] assemblyPaths)
{
var assemblyPluginInfos = new List <string>();
//var pluginFinderAssemblyContext = new PluginAssemblyLoadingContext("PluginFinderAssemblyContext");
var pluginFinderAssemblyContext = new CollectibleAssemblyLoadContext(pluginsPath);
//var pluginFinderAssemblyContext = new AssemblyLoadContext(name: "PluginFinderAssemblyContext");
var cwd = System.IO.Directory.GetCurrentDirectory();
foreach (var assemblyPath in assemblyPaths)
{
var fullAssemblyPath = System.IO.Path.Combine(cwd, assemblyPath);
var assembly = pluginFinderAssemblyContext.LoadFromAssemblyPath(fullAssemblyPath);
if (GetPluginTypes(assembly).Any())
{
assemblyPluginInfos.Add(assembly.Location);
}
}
pluginFinderAssemblyContext.Unload();
return(assemblyPluginInfos);
}
//private readonly AssemblyLoadContext _pluginAssemblyLoadingContext;
public PluginHost(string pluginsPath)
{
_pluginAssemblyLoadingContext = new CollectibleAssemblyLoadContext(pluginsPath);
//_pluginAssemblyLoadingContext = new AssemblyLoadContext("PluginAssemblyContext");
}