/// <summary>
/// Sets up a message handler chain for the bus publisher
/// </summary>
/// <typeparam name="TMessageType">The message type</typeparam>
/// <param name="options">The options</param>
/// <param name="configureMessageHandlerChain">The action called to setup the message handler chain</param>
/// <returns>Bus options</returns>
public static BusOptions <TMessageType> UseSubscriptionChain <TMessageType>(
this BusOptions <TMessageType> options,
Action <ChainBuilder <MessageAndHandler <TMessageType> > > configureMessageHandlerChain)
{
var builder = new ChainBuilder <MessageAndHandler <TMessageType> >();
configureMessageHandlerChain(builder);
return(UseSubscriptionChain(options, builder));
}
/// <summary>
/// Sets up a message handler chain for the bus publisher
/// </summary>
/// <typeparam name="TMessageType">The message type</typeparam>
/// <param name="options">The options</param>
/// <param name="configureMessageHandlerChain">The action called to setup the message handler chain</param>
/// <returns>Bus options</returns>
public static BusOptions <TMessageType> UseSubscriptionChain <TMessageType>(
this BusOptions <TMessageType> options,
Action <ChainBuilder <MessageAndHandler <TMessageType> >, Func <MessageAndHandler <TMessageType>, CancellationToken, Task> > configureMessageHandlerChain)
{
var builder = new ChainBuilder <MessageAndHandler <TMessageType> >();
configureMessageHandlerChain(builder, PublishToSubscription.PublishAsync);
return(UseSubscriptionChain(options, builder));
}
private static BusOptions <TMessageType> UseSubscriptionChain <TMessageType>(
BusOptions <TMessageType> options,
ChainBuilder <MessageAndHandler <TMessageType> > builder)
{
if (builder.HasHandler == false)
{
builder.Handler(PublishToSubscription.PublishAsync);
}
var subscriptionNotification = new ChainBuilderNotifier();
var services = new ChainBuilderSetupServices(subscriptionNotification);
var chainFunc = builder.BuildFunc(services);
var newChain = new Chain <MessageAndHandler <TMessageType> >(chainFunc);
subscriptionNotification.Notify(newChain);
options.UseCustomPublisher(new ParallelMessageHandlerChainPublisher <TMessageType>(chainFunc));
return(options);
}
public ConcurrentMessageBus(BusOptions <TMessageType> options) : base(options)
{
}
/// <summary>
/// Initializes a new instance of the <see cref="Bus{TMessageType}"/> class.
/// </summary>
/// <param name="options">
/// The options
/// </param>
public Bus(BusOptions <TMessageType> options)
{
this.options = options;
this.publishAsyncFunc = this.options.CustomPublishFunc ?? this.publishAsyncFunc;
}
/// <summary>
/// Use a single receiver publisher
/// </summary>
/// <typeparam name="TMessageType">The message type</typeparam>
/// <param name="options">The options</param>
/// <param name="customHandlerMethod">The custom </param>
/// <returns>The options</returns>
public static BusOptions <TMessageType> UseSingleReceiverPublisher <TMessageType>(
this BusOptions <TMessageType> options,
Func <Func <TMessageType, CancellationToken, Task>, TMessageType, CancellationToken, Task> customHandlerMethod = null)
{
return(options.UseCustomPublisher(new SingleReceiverPublisher <TMessageType>(customHandlerMethod)));
}
/// <summary>
/// Use the serial publisher. Only a single subscription handler is executed at a time.
/// </summary>
/// <typeparam name="TMessageType">The message type</typeparam>
/// <param name="options">The options</param>
/// <returns>The options</returns>
public static BusOptions <TMessageType> UseSerialPublisher <TMessageType>(this BusOptions <TMessageType> options)
{
return(options.UseCustomPublisher(SerialPublisher <TMessageType> .Default));
}
/// <summary>
/// Configures the bus to use the forced parallel publisher. Every message subscription handler is executed on a newly
/// spawned Task
/// </summary>
/// <typeparam name="TMessageType">
/// The message type
/// </typeparam>
/// <param name="options">
/// The options
/// </param>
/// <returns>
/// The options
/// </returns>
public static BusOptions <TMessageType> UseForcedParallelPublisher <TMessageType>(this BusOptions <TMessageType> options)
{
options.UseCustomPublisher(ForcedParallelPublisher <TMessageType> .Default);
return(options);
}
