public async Task OnError_Continue_prevents_aggregator_exceptions_from_stopping_catchup()
{
var projectionStore = new InMemoryProjectionStore <BalanceProjection>();
var count = 0;
var projector = new BalanceProjector()
.Pipeline(async(projection, batch, next) =>
{
Interlocked.Increment(ref count);
Console.WriteLine(count);
if (count < 49)
{
Throw();
}
await next(projection, batch);
}).Trace();
var catchup = StreamCatchup.Create(stream.Trace(),
batchSize: 50);
catchup.Subscribe(projector,
projectionStore.AsHandler(),
onError: e => e.Continue());
await catchup.RunUntilCaughtUp();
projectionStore.Count().Should().Be(1);
projectionStore.Single().CursorPosition.Should().Be(1);
}
public async Task Catchup_batch_size_can_be_specified()
{
var projectionStore = new InMemoryProjectionStore<BalanceProjection>();
store.WriteEvents(streamId, howMany: 50);
var catchup = StreamCatchup.Create(stream, batchCount: 20);
catchup.Subscribe(new BalanceProjector(), projectionStore);
await catchup.RunSingleBatch();
projectionStore.Single()
.Balance
.Should()
.Be(20);
}
public async Task Catchup_batch_size_can_be_specified()
{
var projectionStore = new InMemoryProjectionStore <BalanceProjection>();
store.WriteEvents(streamId, howMany: 50);
var catchup = StreamCatchup.Create(stream, batchSize: 20);
catchup.Subscribe(new BalanceProjector(), projectionStore);
await catchup.RunSingleBatch();
projectionStore.Single()
.Balance
.Should()
.Be(20);
}
public async Task Catchup_RunUntilCaughtUp_runs_until_the_stream_has_no_more_results()
{
var projectionStore = new InMemoryProjectionStore <BalanceProjection>();
store.WriteEvents(streamId, howMany: 999);
var catchup = StreamCatchup.Create(stream, batchSize: 10);
catchup.Subscribe(new BalanceProjector(), projectionStore);
TaskScheduler.UnobservedTaskException += (sender, args) => Console.WriteLine(args.Exception);
await catchup.RunUntilCaughtUp();
projectionStore.Single()
.Balance
.Should()
.Be(1000);
}
public async Task OnError_Continue_prevents_aggregator_exceptions_from_stopping_catchup()
{
var projectionStore = new InMemoryProjectionStore<BalanceProjection>();
var count = 0;
var projector = new BalanceProjector()
.Pipeline(async (projection, batch, next) =>
{
Interlocked.Increment(ref count);
Console.WriteLine(count);
if (count < 49)
{
Throw();
}
await next(projection, batch);
}).Trace();
var catchup = StreamCatchup.Create(stream.Trace(),
batchCount: 50);
catchup.Subscribe(projector,
projectionStore.AsHandler(),
onError: e => e.Continue());
await catchup.RunUntilCaughtUp();
projectionStore.Count().Should().Be(1);
projectionStore.Single().CursorPosition.Should().Be(1);
}
public async Task Catchup_RunUntilCaughtUp_runs_until_the_stream_has_no_more_results()
{
var projectionStore = new InMemoryProjectionStore<BalanceProjection>();
store.WriteEvents(streamId, howMany: 999);
var catchup = StreamCatchup.Create(stream, batchCount: 10);
catchup.Subscribe(new BalanceProjector(), projectionStore);
TaskScheduler.UnobservedTaskException += (sender, args) => Console.WriteLine(args.Exception);
await catchup.RunUntilCaughtUp();
projectionStore.Single()
.Balance
.Should()
.Be(1000);
}
