/// <summary>
/// Traverses the specified base directory including all sub-directories, generating a list of assemblies that can be
/// scanned for handlers, a list of skipped files, and a list of errors that occurred while scanning.
/// Scanned files may be skipped when they're either not a .NET assembly, or if a reflection-only load of the .NET
/// assembly reveals that it does not reference NServiceBus.
/// </summary>
public AssemblyScannerResults GetScannableAssemblies()
{
var results = new AssemblyScannerResults();
if (IncludeAppDomainAssemblies)
{
var matchingAssembliesFromAppDomain = AppDomain.CurrentDomain
.GetAssemblies()
.Where(assembly => IsIncluded(assembly.GetName().Name));
results.Assemblies.AddRange(matchingAssembliesFromAppDomain);
}
foreach (var assemblyFile in ScanDirectoryForAssemblyFiles())
{
ScanAssembly(assemblyFile.FullName, results);
}
return(results);
}
void ScanAssembly(string assemblyPath, AssemblyScannerResults results)
{
Assembly assembly;
if (!IsIncluded(Path.GetFileNameWithoutExtension(assemblyPath)))
{
var skippedFile = new SkippedFile(assemblyPath, "File was explicitly excluded from scanning.");
results.SkippedFiles.Add(skippedFile);
return;
}
var compilationMode = Image.GetCompilationMode(assemblyPath);
if (compilationMode == Image.CompilationMode.NativeOrInvalid)
{
var skippedFile = new SkippedFile(assemblyPath, "File is not a .NET assembly.");
results.SkippedFiles.Add(skippedFile);
return;
}
if (!Environment.Is64BitProcess && compilationMode == Image.CompilationMode.CLRx64)
{
var skippedFile = new SkippedFile(assemblyPath, "x64 .NET assembly can't be loaded by a 32Bit process.");
results.SkippedFiles.Add(skippedFile);
return;
}
try
{
//if (!AssemblyPassesReferencesTest(assemblyPath))
//{
// var skippedFile = new SkippedFile(assemblyPath, "Assembly does not reference at least one of the must referenced assemblies.");
// results.SkippedFiles.Add(skippedFile);
// return;
//}
if (IsRuntimeAssembly(assemblyPath))
{
var skippedFile = new SkippedFile(assemblyPath, "Assembly .net runtime assembly.");
results.SkippedFiles.Add(skippedFile);
return;
}
assembly = Assembly.LoadFrom(assemblyPath);
if (results.Assemblies.Contains(assembly))
{
return;
}
}
catch (BadImageFormatException ex)
{
assembly = null;
results.ErrorsThrownDuringScanning = true;
if (ThrowExceptions)
{
var errorMessage = String.Format("Could not load '{0}'. Consider excluding that assembly from the scanning.", assemblyPath);
throw new Exception(errorMessage, ex);
}
}
if (assembly == null)
{
return;
}
try
{
//will throw if assembly cannot be loaded
assembly.GetTypes();
}
catch (ReflectionTypeLoadException e)
{
results.ErrorsThrownDuringScanning = true;
if (ThrowExceptions)
{
var errorMessage = FormatReflectionTypeLoadException(assemblyPath, e);
throw new Exception(errorMessage);
}
return;
}
results.Assemblies.Add(assembly);
}