private void AddDirectiveMiddlewareAndCommonCommandHandlers()
{
AddMiddleware(
async(originalCommand, context, next) =>
{
var commands = PreprocessCommands(originalCommand);
if (!commands.Contains(originalCommand) && commands.Any())
{
context.CommandToSignalCompletion = commands.Last();
}
foreach (var command in commands)
{
if (context.IsComplete)
{
break;
}
if (command == originalCommand)
{
// no new context is needed
await next(originalCommand, context);
}
else
{
switch (command)
{
case AnonymousKernelCommand _:
case DirectiveCommand _:
await command.InvokeAsync(context);
break;
default:
SetHandlingKernel(command, context);
var kernel = context.HandlingKernel;
if (kernel == this)
{
var c = KernelInvocationContext.Establish(command);
await next(command, c);
}
else
{
// forward to appropriate kernel
await kernel.SendAsync(command);
}
break;
}
}
}
});
}
