public static void Run(PersistenceStrategy strategy, IDependencyInjector container)
{
container.BindToConstant <ILogger>(new DefaultLogger());
container.Get <ILogger>().Trace("Bootstrapper", "starting the bootstrapper.");
SetupBus(container);
SetupDomainCommandHandlers(container);
switch (strategy)
{
case PersistenceStrategy.InMemory:
container.Get <ILogger>().Trace("Bootstrapper", "bootstrapping In-Memory strategy");
SetupInMemoryRepo(container);
break;
case PersistenceStrategy.InMemoryEventSourcing:
container.Get <ILogger>().Trace("Bootstrapper", "bootstrapping In-Memory ES strategy");
SetupInMemoryEsRepo(container);
break;
default:
container.Get <ILogger>().Trace("Bootstrapper", "bootstrapping RavenDb strategy");
SetupRavenDbRepo(container);
break;
}
container.Get <ILogger>().Trace("Bootstrapper", "done.");
}
public void DisplaySomeResults()
{
var repo = _container.Get <IEmployeeRepository>();
var employee1 = repo.Load("12345");
_container.Get <ILogger>().Debug("Playground",
$"Employee {employee1.Id} - {employee1.Name} salary is ${employee1.Salary}"
);
var employee2 = repo.Load("54321");
_container.Get <ILogger>().Debug("Playground",
$"Employee {employee2.Id} - {employee2.Name} salary is ${employee2.Salary}"
);
if (_strategy != PersistenceStrategy.RavenDb)
{
return;
}
var es = _container.Get <RavenDbEmployeeEventStore>();
foreach (var entry in es.TopEventSourceEmployees())
{
Console.WriteLine($"Number of events to {entry.EmployeeId} is {entry.NumberOfEvents}");
}
foreach (var entry in es.TopSalaries())
{
Console.WriteLine($"{entry.EmployeeId} - {entry.FullName} (${entry.Salary})");
}
}
private static void SetupInMemoryRepo(IDependencyInjector container)
{
container.Get <ILogger>().Trace("Bootstrapper", "initialzing In-memory repository");
container.BindToConstant <IEmployeeRepository>(
container.Get <InMemoryEmployeeRepository>()
);
}
private static void SetupBus(IDependencyInjector container)
{
container.Get <ILogger>().Trace("Bootstrapper", "initializing In-Memory bus.");
var bus = container.Get <NaiveInMemoryBus>();
container.BindToConstant <IBus>(bus);
}
private static void SetupInMemoryEsRepo(IDependencyInjector container)
{
container.Get <ILogger>().Trace("Bootstrapper", "initialzing In-memory event store repo");
var esrepo = container.Get <InMemoryEmployeeEventSourceRepository>();
container.BindToConstant <IEmployeeRepository>(esrepo);
container.BindToConstant(esrepo);
container.Get <IBus>().RegisterHandler <InMemoryEmployeeEventSourceRepository>();
}
private static void SetupDomainCommandHandlers(IDependencyInjector container)
{
container.Get <ILogger>().Trace("Bootstrapper", "registering command handlers.");
var bus = container.Get <IBus>();
bus.RegisterHandler <RegisterEmployeeHandler>();
bus.RegisterHandler <RaiseEmployeeSalaryHandler>();
bus.RegisterHandler <UpdateEmployeeHomeAddressHandler>();
}
private static void SetupRavenDbRepo(IDependencyInjector container)
{
container.Get <ILogger>().Trace("Bootstrapper", "initialzing RavenDB repositories");
container.BindToConstant <IEmployeeRepository>(
container.Get <RavenDbEmployeeRepository>()
);
container.BindToConstant(container.Get <RavenDbEmployeeEventStore>());
container.Get <IBus>().RegisterHandler <RavenDbEmployeeEventStore>();
}
private static void ExecuteSampleCommands(IDependencyInjector container)
{
var bus = container.Get <IBus>();
bus.SendCommand(new RegisterEmployeeCommand(
"12345",
new FullName("John", "Doe"),
100m
));
bus.SendCommand(new RegisterEmployeeCommand(
"54321",
new FullName("Mary", "Loo"),
103m
));
bus.SendCommand(new UpdateEmployeeHomeAddressCommand(
"12345",
BrazilianAddress.Factory.New("Nice street", 42, null, "Good Ville", "MyCity", "XX", "91234-123"))
);
bus.SendCommand(new RaiseEmployeeSalaryCommand(
id: "12345",
amount: 10m));
bus.SendCommand(new RaiseEmployeeSalaryCommand("12345", 20m));
bus.SendCommand(new RaiseEmployeeSalaryCommand("12345", 13m));
bus.SendCommand(new UpdateEmployeeHomeAddressCommand(
"12345",
BrazilianAddress.Factory.New("Main avenue", 42, null, "Good Ville", "MyCity", "XX", "91234-123"))
);
bus.SendCommand(new RaiseEmployeeSalaryCommand("12345", 21m));
bus.SendCommand(new RaiseEmployeeSalaryCommand("12345", 14m));
}
private static void SetupDomainCommandHandlers(IDependencyInjector container)
{
var bus = container.Get <IBus>();
bus.RegisterHandler <RegisterEmployeeHandler>();
bus.RegisterHandler <RaiseEmployeeSalaryHandler>();
bus.RegisterHandler <UpdateEmployeeHomeAddressHandler>();
bus.RegisterHandler <FailedToRegisterEmployeeHandler>();
}
private void Send <T>(T message) where T : Message
{
var constructedType = typeof(IMessageHandler <>)
.MakeGenericType(typeof(T));
var handlersToNotify = _handlers
.Where(h => constructedType.IsAssignableFrom(h));
foreach (var handler in handlersToNotify)
{
var instance = _injector.Get(handler);
var method = constructedType.GetMethod("Handle", new[] { typeof(T) });
method.Invoke(instance, new object[] { message });
}
}
