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Simple Service Bus is a simple generic wrapper around Azures Message Bus. It provides a simple typed interface and allows you to write clean simple handlers with minimal configuration.

Simply setup your send bus

//Setup routing
var routes = new MessageRouteTable()
    .AddRoute<MyQueueMessage>("my-message-queue")
    .AddRoute<MyTopicMessage>("my-message-topic");
    
//Initialise your bus
//Easily wire in to your IOC
ISendOnlyBus bus = new SendOnlyBus(new BusConfigutration(), routes);

//Send those messages!
await bus.Send(new MyQueueMessage { SomeString = "From my queue!" });
await bus.Publish(new MyTopicMessage { SomeString = "From my topic!" });

Simply setup your receive bus

//Basic endpoint configuration
var defaultHandlerConfig = new HandlerConfiguration
{
    MaxConcurrentCalls = 10,
    AutoComplete = true
};

//Initialise your receive bus
IRecieveOnlyBus bus = RecieveOnlyBus.Initialise(new BusConfigutration())
    .WithDependencyRegistrations(x =>
    {
        //Register your handlers
        x.RegisterQueueHandler<MyQueueMessage, MyMessageQueueMessageHandler>();
        x.RegisterTopicHandler<MyTopicMessage, MyMessageTopicMessageHandler>();
    })
    //Where do you want messages to go?
    .RegisterQueue<MyQueueMessage>("my-message-queue", defaultHandlerConfig)
    .RegisterTopic<MyTopicMessage>("my-message-topic", defaultHandlerConfig);

//On end
bus.Dispose();

Create some messages

//Queue
public class MyQueueMessage : IQueueMessage
{
    public string SomeString { get; set; }

    public DateTime When { get; set; } = DateTime.UtcNow;
}

//Topic
public class MyTopicMessage : ITopicMessage
{
    public string SomeString { get; set; }

    public DateTime When { get; set; } = DateTime.UtcNow;
}

And create your handlers

//Queue
public class MyMessageQueueMessageHandler : AbstractQueueMessageHandler<MyQueueMessage>
{
    //Handler impl
    public override Task Handle(MessageContext<MyQueueMessage> messageContext, CancellationToken token)
    {
        Console.WriteLine("MyMessageQueueMessageHandle " + messageContext.Message.SomeString);
        return Task.FromResult(0);
    }

    //Optional OnException handler
    public override Task OnException(ExceptionReceivedEventArgs exceptionReceivedEventArgs)
    {
        Console.WriteLine($"Exception: {exceptionReceivedEventArgs.Exception.Message}");
        Console.WriteLine($"Action: {exceptionReceivedEventArgs.ExceptionReceivedContext.Action}");
        Console.WriteLine($"ClientId: {exceptionReceivedEventArgs.ExceptionReceivedContext.ClientId}");
        Console.WriteLine($"Endpoint: {exceptionReceivedEventArgs.ExceptionReceivedContext.Endpoint}");
        Console.WriteLine($"EntityPath: {exceptionReceivedEventArgs.ExceptionReceivedContext.EntityPath}");

        return base.OnException(exceptionReceivedEventArgs);
    }
}

//Topic
public class MyMessageTopicMessageHandler : AbstractTopicMessageHandler<MyTopicMessage>
{
    private readonly ISendOnlyBus bus;

    public override string Subscription => "my-subscription";

    //ISendOnlyBus is auto wired up with the IOC
    public MyMessageTopicMessageHandler(ISendOnlyBus bus)
    {
        this.bus = bus;
    }

    //Handler impl
    public override async Task Handle(MessageContext<MyTopicMessage> messageContext, CancellationToken token)
    {
        Console.WriteLine("MyMessageTopicMessageHandle " + messageContext.Message.SomeString);

        await bus.Send(new MyQueueMessage {SomeString = " Resent!!"});
    }
    
    //Optional OnException handler
    public override Task OnException(ExceptionReceivedEventArgs exceptionReceivedEventArgs)
    {
        Console.WriteLine($"Exception: {exceptionReceivedEventArgs.Exception.Message}");
        Console.WriteLine($"Action: {exceptionReceivedEventArgs.ExceptionReceivedContext.Action}");
        Console.WriteLine($"ClientId: {exceptionReceivedEventArgs.ExceptionReceivedContext.ClientId}");
        Console.WriteLine($"Endpoint: {exceptionReceivedEventArgs.ExceptionReceivedContext.Endpoint}");
        Console.WriteLine($"EntityPath: {exceptionReceivedEventArgs.ExceptionReceivedContext.EntityPath}");

        return base.OnException(exceptionReceivedEventArgs);
    }
}

Eezy Peezy!!

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