public static StreamDbContextOptionsBuilder UseInMemoryStream <T>(this StreamDbContextOptionsBuilder builder, IObservable <T> observable)
{
builder.Options.SetStreamFactory((options, type, streamPatterns) =>
{
return(new Stream <T>(observable, options, streamPatterns));
});
return(builder);
}
public void Setup()
{
_subject = new Subject <string>();
var options = new StreamDbContextOptionsBuilder()
.UseInMemoryStream(_subject.AsQbservable())
.Options;
_sut = new StreamDbContext(options);
}
static async Task Main(string[] args)
{
var baseTypes = new[] { typeof(BaseEvent) };
var eventTypes = typeof(BaseEvent).Assembly.GetTypes()
.Where(t => t.IsSubclassOf(typeof(BaseEvent)));
var options = new StreamDbContextOptionsBuilder()
.UseEventStore("127.0.0.1:5001")
.RegisterTypes(() => baseTypes.Concat(eventTypes))
.Options;
var es = new EventStoreContext(options);
var orderEvents = es.FromStreams <BaseEvent>("Order-*", "PaymentPlan-*");
var customerEvents = es.FromStreams <BaseEvent>("Customer-*");
var stream = orderEvents
.GroupBy(e =>
(e is OrderCreatedEvent) ? ((OrderCreatedEvent)e).Id :
(e is OrderCustomerLinkedV2Event) ? ((OrderCustomerLinkedV2Event)e).OrderId :
(e is OrderConfirmedEvent) ? ((OrderConfirmedEvent)e).OrderId :
(e is PaymentPlanCreatedEvent) ? ((PaymentPlanCreatedEvent)e).Id :
Guid.Empty
)
.Where(g => g.Key != Guid.Empty)
//.Select(g => g
// .Aggregate(
// Guid.Empty,
// (s, e) => (Guid)(e.GetType().GetProperty("CustomerId") == null ? s : e.GetType().GetProperty("CustomerId").GetValue(e, null))
// )
// .Zip(g, (c, e) => g.Where(x => !x.Bag.ContainsKey("CustomerId")).Do(x => x.Bag.Add("CustomerId", c)))
// .SelectMany(x => x)
//)
.SelectMany(g => g)
.Merge(customerEvents) // NB: This doesn't actually work - it's an observable and there's more to joining streams than this...
.GroupBy(e =>
(e is OrderCustomerLinkedV2Event) ? ((OrderCustomerLinkedV2Event)e).CustomerId :
(e is OrderConfirmedEvent) ? ((OrderConfirmedEvent)e).CustomerId :
//(e is OrderCreatedEvent) ? (Guid)(e.Bag.ContainsKey("CustomerId") ? e.Bag["CustomerId"] : Guid.Empty) :
//(e is PaymentPlanCreatedEvent) ? (Guid)(e.Bag.ContainsKey("CustomerId") ? e.Bag["CustomerId"] : Guid.Empty) :
(e is CustomerDetailsAddedEvent) ? ((CustomerDetailsAddedEvent)e).CustomerId :
Guid.Empty
)
//.Where(g => g.Key == new Guid("879c5d39-fd72-4392-bf88-8bba363e590e"))
.SelectMany(g => g)
.Subscribe(
onNext: s => Console.WriteLine(JsonConvert.SerializeObject(s)),
onError: e => Console.WriteLine("ERROR: " + e),
onCompleted: () => Console.WriteLine("DONE")
);
while (!Console.KeyAvailable && Console.ReadKey(true).Key != ConsoleKey.Escape)
{
await Task.Delay(50);
}
}
public void Setup()
{
_subject = new Subject <string>();
_mockHttp = new MockHttpMessageHandler();
var client = new HttpClient(_mockHttp);
var options = new StreamDbContextOptionsBuilder()
.UseGrpcStream("http://some-host")
.Options;
_sut = new StreamDbContext(options);
}
static async Task Main(string[] args)
{
var types = new[] { typeof(TestEvent) };
var options = new StreamDbContextOptionsBuilder()
.UseGrpcStream("127.0.0.1:5001")
.RegisterTypes(() => types)
.Options;
var es = new StreamDbContext(options);
var orderEvents = es.FromAll <TestEvent>()
.Subscribe(
onNext: s => Console.WriteLine(JsonConvert.SerializeObject(s)),
onError: e => Console.WriteLine("ERROR: " + e),
onCompleted: () => Console.WriteLine("DONE")
);
while (!Console.KeyAvailable && Console.ReadKey(true).Key != ConsoleKey.Escape)
{
await Task.Delay(50);
}
}
public static StreamDbContextOptionsBuilder UseEventStore(this StreamDbContextOptionsBuilder builder, string url)
{
builder.Options.SetConnectionString(url);
builder.Options.SetStreamFactory(CreateStream);
return(builder);
}
public static StreamDbContextOptionsBuilder UseGrpcStream(this StreamDbContextOptionsBuilder builder, string url)
{
builder.Options.SetConnectionString(url);
builder.Options.SetStreamFactory(StreamFactory);
return(builder);
}
