/// <summary>
/// Initializes a new instance of the <see cref="PeerLoadingObjectHolder"/> class.
/// </summary>
public PeerLoadingObjectHolder(BinaryReader reader)
{
Debug.Assert(reader != null);
var originNodeId = reader.ReadGuid().GetValueOrDefault();
var typeName = reader.ReadString();
var ignite = reader.Marshaller.Ignite;
using (new PeerAssemblyResolver(ignite, originNodeId)) // Resolve transitive dependencies when needed.
{
// Resolve type from existing assemblies or from remote nodes.
var type = Type.GetType(typeName, false)
?? PeerAssemblyResolver.LoadAssemblyAndGetType(typeName, ignite, originNodeId);
Debug.Assert(type != null);
_object = reader.Deserialize <object>(type);
}
}
/** <inheritdoc /> */
public AssemblyRequestResult Invoke(AssemblyRequest arg)
{
if (arg == null)
{
throw new IgniteException("GetAssemblyFunc does not allow null arguments.");
}
if (arg.AssemblyName == null)
{
throw new IgniteException("GetAssemblyFunc does not allow null AssemblyName.");
}
Debug.WriteLine("Peer assembly request: " + arg.AssemblyName);
// Try assemblies in main context.
var asm = LoadedAssembliesResolver.Instance.GetAssembly(arg.AssemblyName);
if (asm != null)
{
if (asm.IsDynamic)
{
return(new AssemblyRequestResult(null,
"Peer assembly loading does not support dynamic assemblies: " + asm));
}
return(new AssemblyRequestResult(AssemblyLoader.GetAssemblyBytes(asm), null));
}
// Try cached assemblies.
var bytes = AssemblyLoader.GetAssemblyBytes(arg.AssemblyName);
if (bytes != null)
{
return(new AssemblyRequestResult(bytes, null));
}
// Assembly may be present but not loaded - attempt to load into main context.
try
{
using (PeerAssemblyResolver.Disable())
{
asm = Assembly.Load(arg.AssemblyName);
if (asm != null)
{
return(new AssemblyRequestResult(AssemblyLoader.GetAssemblyBytes(asm), null));
}
}
}
catch (FileNotFoundException)
{
return(null);
}
catch (FileLoadException ex)
{
return(new AssemblyRequestResult(null, string.Format("Failed to load assembly: {0} ({1})", asm, ex)));
}
catch (BadImageFormatException ex)
{
return(new AssemblyRequestResult(null, string.Format("Failed to load assembly: {0} ({1})", asm, ex)));
}
return(null);
}