public async Task Handle(ReplyToTopicCommand message, CancellationToken token = new CancellationToken())
{
var topic = await _session.Get <Topic>(message.AggregateId, message.ExpectedVersion, token);
topic.Reply(message.AggregateId, message.Content, message.Timestamp);
await _session.Commit(token);
}
static async Task Main(string[] args)
{
var services = new ServiceCollection();
services.AddMemoryCache();
// CQRSLite
services.AddSingleton(new Router());
services.AddSingleton <ICommandSender>(y => y.GetService <Router>());
services.AddSingleton <IEventPublisher>(y => y.GetService <Router>());
services.AddSingleton <IHandlerRegistrar>(y => y.GetService <Router>());
services.AddSingleton <IQueryProcessor>(y => y.GetService <Router>());
services.AddSingleton <IEventStore, InMemoryEventStore>();
services.AddSingleton <ICache, MemoryCache>();
services.AddScoped <IRepository>(y => new CacheRepository(new Repository(y.GetService <IEventStore>()), y.GetService <IEventStore>(), y.GetService <ICache>()));
services.AddScoped <ISession, Session>();
// Scan for CommandHandlers and EventHandlers
services.Scan(scan => scan
.FromAssemblies(typeof(Program).GetTypeInfo().Assembly)
.AddClasses(classes => classes.Where(x =>
{
var allInterfaces = x.GetInterfaces();
return
(allInterfaces.Any(y => y.GetTypeInfo().IsGenericType&& y.GetTypeInfo().GetGenericTypeDefinition() == typeof(IHandler <>)) ||
allInterfaces.Any(y => y.GetTypeInfo().IsGenericType&& y.GetTypeInfo().GetGenericTypeDefinition() == typeof(ICancellableHandler <>)) ||
allInterfaces.Any(y => y.GetTypeInfo().IsGenericType&& y.GetTypeInfo().GetGenericTypeDefinition() == typeof(IQueryHandler <,>)) ||
allInterfaces.Any(y => y.GetTypeInfo().IsGenericType&& y.GetTypeInfo().GetGenericTypeDefinition() == typeof(ICancellableQueryHandler <,>)));
}))
.AsSelf()
.WithTransientLifetime());
var provider = services.BuildServiceProvider();
var registrar = new RouteRegistrar(provider);
registrar.RegisterInAssemblyOf(typeof(Program));
//
// Execute
var commandSender = provider.GetRequiredService <ICommandSender>();
var queryProcessor = provider.GetRequiredService <IQueryProcessor>();
//
var aggregateId = Guid.NewGuid();
var createTopicCommand = new CreateTopicCommand(aggregateId, "Hello World!", "This is the initial post");
await commandSender.Send(createTopicCommand);
// Get the read model
var data = await queryProcessor.Query(new GetTopicByIdQuery(aggregateId));
Console.WriteLine(JsonSerializer.Serialize(data));
//
var tasks = new List <Task>();
const int limit = 499;
for (var i = 0; i < limit; i++)
{
var replyToTopicCommand = new ReplyToTopicCommand(aggregateId, $"This is a reply #{i}", DateTime.UtcNow.AddDays(limit * -1 + i), data.Version);
tasks.Add(commandSender.Send(replyToTopicCommand));
}
await Task.WhenAll(tasks);
//
data = await queryProcessor.Query(new GetTopicByIdQuery(aggregateId));
Console.WriteLine(JsonSerializer.Serialize(data));
Console.WriteLine("DONE!");
Console.ReadKey();
}
