private static Dictionary<SledDynamicPluginInfo, Assembly> GetDynamicAssemblies(string directory, Type[] attributeTypes)
{
var assemblies =
new Dictionary<SledDynamicPluginInfo, Assembly>();
try
{
var files =
Directory.GetFiles(directory, "*.dll", SearchOption.TopDirectoryOnly);
foreach (var file in files)
{
try
{
Assembly assembly;
try
{
assembly = Assembly.LoadFile(file);
}
catch (Exception) { continue; }
if (assembly == null)
continue;
// Check if assembly has any of the
// attributes we're looking for
var bAssemblyContainsAnyAttributes =
DoesAssemblyContainAnyAttributes(
assembly,
attributeTypes);
// No attributes; skip
if (!bAssemblyContainsAnyAttributes)
continue;
// Check if plugin can be instantiated
Exception exception;
var bCanPluginBeInstantiated =
CanAssemblyBeInstantiated(
assembly.GetExportedTypes(),
out exception);
// Create plugin info
var pluginInfo =
new SledDynamicPluginInfo(
Path.GetFileName(file),
file,
bCanPluginBeInstantiated,
exception);
// Add
assemblies.Add(pluginInfo, assembly);
}
catch (Exception ex)
{
SledOutDevice.OutLine(
SledMessageType.Error,
"Exception loading plugin \"{0}\": {1}",
file, ex.Message);
}
}
}
catch (Exception ex)
{
SledOutDevice.OutLine(
SledMessageType.Error,
"Exception looking for plugins: {0}",
ex.Message);
}
return assemblies;
}
private static string GetString(SledDynamicPluginInfo info)
{
var name =
Path.GetFileName(info.AbsolutePath);
if (info.Loaded)
{
return
string.Format(
"Plugin finder found {0} " +
"and it loaded successfully!",
name);
}
var exMessage =
info.Exception == null
? string.Empty
: string.Format(
"Exception: {0}",
info.Exception.Message);
return
string.Format(
"Plugin finder found {0} " +
"but it failed to load! {1}",
name,
exMessage);
}