public void PassThrough()
{
var context = Substitute.For<IUpstreamContext>();
var state = new CommandCompleted(new DispatchCommand(new FakeCommand(), 3));
var dispatcher = new RetryingHandler(3);
dispatcher.HandleUpstream(context, state);
context.Received().SendUpstream(Arg.Any<CommandCompleted>());
}
public void FailTwo()
{
var context = Substitute.For<IUpstreamContext>();
var msg = new CommandFailed(new DispatchCommand(new FakeCommand(), 1), new Exception());
var dispatcher = new RetryingHandler(3);
dispatcher.HandleUpstream(context, msg);
context.Received().SendUpstream(Arg.Any<CommandFailed>());
context.Received().SendDownstream(Arg.Any<DispatchCommand>());
context.DidNotReceive().SendUpstream(Arg.Any<CommandAborted>());
}
/// <summary>
/// Build the dispatcher.
/// </summary>
/// <returns>Created dispatcher</returns>
public ICommandDispatcher Build()
{
if (_lastHandler == null && _container == null)
throw new InvalidOperationException(
"You must have specified a handler which can actually invoke the correct command handler. For instance the 'IocDispatcher'.");
if (_container == null && _lastHandler == null)
throw new InvalidOperationException(
"You must have specified a SINGLE handler that can invoke the correct command handler. Either use 'IocDispatcher' or another one, not both alternatives.");
var builder = new PipelineBuilder();
// must be registered before the storage since the storage listens on CommandAborted
if (_maxAttempts > 0)
{
var handler = new RetryingHandler(_maxAttempts);
builder.RegisterUpstream(handler);
}
// Must be registered before the async handler.
if (_storageHandler != null)
{
builder.RegisterDownstream(_storageHandler);
builder.RegisterUpstream(_storageHandler);
}
if (_workers > 0)
builder.RegisterDownstream(new AsyncHandler(_workers));
if (_container != null)
builder.RegisterDownstream(new Pipeline.IocDispatcher(_container));
else
builder.RegisterDownstream(_lastHandler);
builder.RegisterUpstream(_errorHandler);
var pipeline = builder.Build();
pipeline.Start();
var dispatcher = new PipelineDispatcher(pipeline);
return dispatcher;
}