public async Task SubscribeAsync()
{
var entityCreationMetadata = new EntityCreationMetadata
{
KafkaTopic = nameof(Order) + "-Join",
Partitions = 1
};
var response = await restApiClient.CreateStreamAsync <Order>(entityCreationMetadata, ifNotExists : true);
var r = await response.Content.ReadAsStringAsync().ConfigureAwait(false);
response = await restApiClient.CreateTableAsync <Payment>(entityCreationMetadata with {
KafkaTopic = nameof(Payment) + "-Join"
}, ifNotExists : true);
response = await restApiClient.CreateTableAsync <Shipment>(entityCreationMetadata with {
KafkaTopic = nameof(Shipment) + "-Join"
}, ifNotExists : true);
var value = new Foo {
Prop = 42
};
var query = (from o in context.CreateQueryStream <Order>()
join p1 in Source.Of <Payment>() on o.PaymentId equals p1.Id
join s1 in Source.Of <Shipment>() on o.ShipmentId equals s1.Id into gj
from sa in gj.DefaultIfEmpty()
select new
{
value,
orderId = o.OrderId,
shipmentId = sa.Id,
paymentId = p1.Id,
})
.Take(5);
string ksql = query.ToQueryString();
using var subscription = query
.Subscribe(c =>
{
Console.WriteLine($"{nameof(Order.OrderId)}: {c.orderId}");
Console.WriteLine($"{nameof(Order.PaymentId)}: {c.paymentId}");
if (c.shipmentId.HasValue)
{
Console.WriteLine($"{nameof(Order.ShipmentId)}: {c.shipmentId}");
}
}, error =>
{
Console.WriteLine(error.Message);
});
var order = new Order {
OrderId = 1, PaymentId = 1, ShipmentId = 1
};
var payment = new Payment {
Id = 1
};
var shipment = new Shipment {
Id = 1
};
response = await restApiClient.InsertIntoAsync(order);
r = await response.Content.ReadAsStringAsync().ConfigureAwait(false);
response = await restApiClient.InsertIntoAsync(payment);
await Task.Delay(TimeSpan.FromMilliseconds(250));
response = await restApiClient.InsertIntoAsync(shipment);
}
