static void Main(string[] args)
{
var config = new ConfigurationBuilder()
.SetBasePath(Directory.GetCurrentDirectory())
.AddJsonFile("config.json")
.Build();
var serviceProvider = new ServiceCollection()
.AddTransient <EventPublisher, EventPublisher>()
.AddTransient <IEventStore>(s => new SqlEventStore(config["connectionstring"], s.GetService <EventPublisher>()))
.AddTransient <StateConnector, StateConnector>()
.AddTransient <ICommandHandler <CreateNewPersonCommand>, PersonCommandHandler>()
.AddTransient <ICommandHandler <ChangeAgeCommand>, PersonCommandHandler>()
.AddTransient <ICommandHandler <ChangeNameCommand>, PersonCommandHandler>()
.BuildServiceProvider();
Guid id = Guid.NewGuid();
CreateNewPersonCommand newPersonCommand = new CreateNewPersonCommand
{
AggregateRootId = id,
Age = 28,
Name = "John Doe"
};
ChangeNameCommand nameToJane = new ChangeNameCommand
{
AggregateRootId = id,
Name = "Jane Doe"
};
ChangeAgeCommand ageTo29Command = new ChangeAgeCommand
{
AggregateRootId = id,
Age = 29
};
ChangeAgeCommand ageTo30Command = new ChangeAgeCommand
{
AggregateRootId = id,
Age = 30
};
CommandHandler commandHandler = new CommandHandler(serviceProvider);
commandHandler.Handle(newPersonCommand);
commandHandler.Handle(nameToJane);
commandHandler.Handle(ageTo29Command);
commandHandler.Handle(ageTo30Command);
StateConnector connector = serviceProvider.GetService <StateConnector>();
var foundPerson = connector.Get <Person>(id);
Console.WriteLine(foundPerson.ToString());
}
public void Handle(ChangeAgeCommand command)
{
var person = _stateConnector.Get <Person>(command.AggregateRootId);
if (person != null)
{
_stateConnector.Save(new AgeChangedEvent {
AggregateRootId = command.AggregateRootId, Age = command.Age
});
}
}
