public void A_borken_Flow_must_cancel_upstream_and_call_onError_on_current_and_future_downstream_subscribers_if_an_internal_error_occurs()
{
var setup = new ChainSetup <string, string, NotUsed>(FaultyFlow <string, string, string>, Settings.WithInputBuffer(1, 1),
(settings, factory) => ActorMaterializer.Create(factory, settings),
(source, materializer) => ToFanoutPublisher(source, materializer, 16), this);
Action <TestSubscriber.ManualProbe <string> > checkError = sprobe =>
{
var error = sprobe.ExpectError();
error.Should().BeOfType <AbruptTerminationException>();
error.Message.Should().StartWith("Processor actor");
};
var downstream2 = this.CreateManualSubscriberProbe <string>();
setup.Publisher.Subscribe(downstream2);
var downstream2Subscription = downstream2.ExpectSubscription();
setup.DownstreamSubscription.Request(5);
downstream2Subscription.Request(5);
setup.Upstream.ExpectRequest(setup.UpstreamSubscription, 1);
setup.UpstreamSubscription.SendNext("a1");
setup.Downstream.ExpectNext("a1");
downstream2.ExpectNext("a1");
setup.Upstream.ExpectRequest(setup.UpstreamSubscription, 1);
setup.UpstreamSubscription.SendNext("a2");
setup.Downstream.ExpectNext("a2");
downstream2.ExpectNext("a2");
var filters = new EventFilterBase[]
{
new ErrorFilter(typeof(NullReferenceException)),
new ErrorFilter(typeof(IllegalStateException)),
new ErrorFilter(typeof(PostRestartException)),// This is thrown because we attach the dummy failing actor to toplevel
};
try
{
Sys.EventStream.Publish(new Mute(filters));
setup.Upstream.ExpectRequest(setup.UpstreamSubscription, 1);
setup.UpstreamSubscription.SendNext("a3");
setup.UpstreamSubscription.ExpectCancellation();
// IllegalStateException terminated abruptly
checkError(setup.Downstream);
checkError(downstream2);
var downstream3 = this.CreateManualSubscriberProbe <string>();
setup.Publisher.Subscribe(downstream3);
downstream3.ExpectSubscription();
// IllegalStateException terminated abruptly
checkError(downstream3);
}
finally
{
Sys.EventStream.Publish(new Unmute(filters));
}
}
public void A_Flow_with_multiple_subscribers_FanOutBox_must_adapt_speed_to_the_currently_slowest_subscriber()
{
var setup = new ChainSetup <string, string, NotUsed>(Identity, Settings.WithInputBuffer(1, 1),
(settings, factory) => ActorMaterializer.Create(factory, settings),
(source, materializer) => ToFanoutPublisher(source, materializer, 1), this);
var downstream2 = this.CreateManualSubscriberProbe <string>();
setup.Publisher.Subscribe(downstream2);
var downstream2Subscription = downstream2.ExpectSubscription();
setup.DownstreamSubscription.Request(5);
setup.Upstream.ExpectRequest(setup.UpstreamSubscription, 1); // because initialInputBufferSize=1
setup.UpstreamSubscription.SendNext("firstElement");
setup.Downstream.ExpectNext("firstElement");
setup.Upstream.ExpectRequest(setup.UpstreamSubscription, 1);
setup.UpstreamSubscription.SendNext("element2");
setup.Downstream.ExpectNoMsg(TimeSpan.FromSeconds(1));
downstream2Subscription.Request(1);
downstream2.ExpectNext("firstElement");
setup.Downstream.ExpectNext("element2");
downstream2Subscription.Request(1);
downstream2.ExpectNext("element2");
}
public void A_Flow_must_deliver_complete_signal_when_publisher_immediately_completes()
{
var setup = new ChainSetup <string, string, NotUsed>(Identity, Settings,
(settings, factory) => ActorMaterializer.Create(factory, settings), ToPublisher, this);
setup.UpstreamSubscription.SendComplete();
setup.Downstream.ExpectComplete();
}
public void A_Flow_must_deliver_error_signal_when_publisher_immediately_fails()
{
var setup = new ChainSetup <string, string, NotUsed>(Identity, Settings,
(settings, factory) => ActorMaterializer.Create(factory, settings), ToPublisher, this);
var weirdError = new Exception("weird test exception");
setup.UpstreamSubscription.SendError(weirdError);
setup.Downstream.ExpectError().Should().Be(weirdError);
}
public void A_Flow_must_deliver_events_when_publisher_sends_elements_and_then_completes()
{
var setup = new ChainSetup <string, string, NotUsed>(Identity, Settings,
(settings, factory) => ActorMaterializer.Create(factory, settings), ToPublisher, this);
setup.DownstreamSubscription.Request(1);
setup.UpstreamSubscription.SendNext("test");
setup.UpstreamSubscription.SendComplete();
setup.Downstream.ExpectNext("test");
setup.Downstream.ExpectComplete();
}
public void A_flow_must_request_initial_elements_from_upstream(string name, int n)
{
ChainSetup <int, int, NotUsed> setup;
if (name.Equals("identity"))
{
setup = new ChainSetup <int, int, NotUsed>(Identity, Settings.WithInputBuffer(n, n),
(settings, factory) => ActorMaterializer.Create(factory, settings), ToPublisher, this);
}
else
{
setup = new ChainSetup <int, int, NotUsed>(Identity2, Settings.WithInputBuffer(n, n),
(settings, factory) => ActorMaterializer.Create(factory, settings), ToPublisher, this);
}
setup.Upstream.ExpectRequest(setup.UpstreamSubscription, setup.Settings.MaxInputBufferSize);
}
public void A_Flow_must_cancel_upstream_when_single_subscriber_cancels_subscription_while_receiving_data()
{
var setup = new ChainSetup <string, string, NotUsed>(Identity, Settings.WithInputBuffer(1, 1),
(settings, factory) => ActorMaterializer.Create(factory, settings), ToPublisher, this);
setup.DownstreamSubscription.Request(5);
setup.UpstreamSubscription.ExpectRequest(1);
setup.UpstreamSubscription.SendNext("test");
setup.UpstreamSubscription.ExpectRequest(1);
setup.UpstreamSubscription.SendNext("test2");
setup.Downstream.ExpectNext("test");
setup.Downstream.ExpectNext("test2");
setup.DownstreamSubscription.Cancel();
// because of the "must cancel its upstream Subscription if its last downstream Subscription has been canceled" rule
setup.UpstreamSubscription.ExpectCancellation();
}
public void A_Flow_with_multiple_subscribers_FanOutBox_must_call_future_subscribers_OnError_when_all_subscriptions_were_cancelled()
{
var setup = new ChainSetup <string, string, NotUsed>(Identity, Settings.WithInputBuffer(1, 1),
(settings, factory) => ActorMaterializer.Create(factory, settings),
(source, materializer) => ToFanoutPublisher(source, materializer, 16), this);
// make sure stream is initialized before canceling downstream
Thread.Sleep(100);
setup.UpstreamSubscription.ExpectRequest(1);
setup.DownstreamSubscription.Cancel();
setup.UpstreamSubscription.ExpectCancellation();
var downstream2 = this.CreateManualSubscriberProbe <string>();
setup.Publisher.Subscribe(downstream2);
// IllegalStateException shut down
downstream2.ExpectSubscriptionAndError().Should().BeAssignableTo <IllegalStateException>();
}
public void A_Flow_with_multiple_subscribers_FanOutBox_must_support_slow_subscriber_with_fan_out_2()
{
var setup = new ChainSetup <string, string, NotUsed>(Identity, Settings.WithInputBuffer(1, 1),
(settings, factory) => ActorMaterializer.Create(factory, settings),
(source, materializer) => ToFanoutPublisher(source, materializer, 2), this);
var downstream2 = this.CreateManualSubscriberProbe <string>();
setup.Publisher.Subscribe(downstream2);
var downstream2Subscription = downstream2.ExpectSubscription();
setup.DownstreamSubscription.Request(5);
setup.Upstream.ExpectRequest(setup.UpstreamSubscription, 1); // because initialInputBufferSize=1
setup.UpstreamSubscription.SendNext("element1");
setup.Downstream.ExpectNext("element1");
setup.UpstreamSubscription.ExpectRequest(1);
setup.UpstreamSubscription.SendNext("element2");
setup.Downstream.ExpectNext("element2");
setup.UpstreamSubscription.ExpectRequest(1);
setup.UpstreamSubscription.SendNext("element3");
// downstream2 has not requested anything, fan-out buffer 2
setup.Downstream.ExpectNoMsg(Dilated(TimeSpan.FromMilliseconds(100)));
downstream2Subscription.Request(2);
setup.Downstream.ExpectNext("element3");
downstream2.ExpectNext("element1");
downstream2.ExpectNext("element2");
downstream2.ExpectNoMsg(Dilated(TimeSpan.FromMilliseconds(100)));
setup.UpstreamSubscription.Request(1);
setup.UpstreamSubscription.SendNext("element4");
setup.Downstream.ExpectNext("element4");
downstream2Subscription.Request(2);
downstream2.ExpectNext("element3");
downstream2.ExpectNext("element4");
setup.UpstreamSubscription.SendComplete();
setup.Downstream.ExpectComplete();
downstream2.ExpectComplete();
}
public void A_Flow_must_request_more_elements_from_upstream_when_downstream_requests_more_elements()
{
var setup = new ChainSetup <string, string, NotUsed>(Identity, Settings,
(settings, factory) => ActorMaterializer.Create(factory, settings), ToPublisher, this);
setup.Upstream.ExpectRequest(setup.UpstreamSubscription, Settings.MaxInputBufferSize);
setup.DownstreamSubscription.Request(1);
setup.Upstream.ExpectNoMsg(TimeSpan.FromMilliseconds(100));
setup.DownstreamSubscription.Request(2);
setup.Upstream.ExpectNoMsg(TimeSpan.FromMilliseconds(100));
setup.UpstreamSubscription.SendNext("a");
setup.Downstream.ExpectNext("a");
setup.Upstream.ExpectRequest(setup.UpstreamSubscription, 1);
setup.Upstream.ExpectNoMsg(TimeSpan.FromMilliseconds(100));
setup.UpstreamSubscription.SendNext("b");
setup.UpstreamSubscription.SendNext("c");
setup.UpstreamSubscription.SendNext("d");
setup.Downstream.ExpectNext("b");
setup.Downstream.ExpectNext("c");
}
public void A_Flow_with_multiple_subscribers_FanOutBox_must_call_future_subscribers_OnError_after_OnSubscribe_if_initial_upstream_was_completed()
{
var setup = new ChainSetup <string, string, NotUsed>(Identity, Settings.WithInputBuffer(1, 1),
(settings, factory) => ActorMaterializer.Create(factory, settings),
(source, materializer) => ToFanoutPublisher(source, materializer, 1), this);
var downstream2 = this.CreateManualSubscriberProbe <string>();
// don't link it just yet
setup.DownstreamSubscription.Request(5);
setup.Upstream.ExpectRequest(setup.UpstreamSubscription, 1);
setup.UpstreamSubscription.SendNext("a1");
setup.Downstream.ExpectNext("a1");
setup.Upstream.ExpectRequest(setup.UpstreamSubscription, 1);
setup.UpstreamSubscription.SendNext("a2");
setup.Downstream.ExpectNext("a2");
setup.Upstream.ExpectRequest(setup.UpstreamSubscription, 1);
// link now while an upstream element is already requested
setup.Publisher.Subscribe(downstream2);
var downstream2Subscription = downstream2.ExpectSubscription();
setup.UpstreamSubscription.SendNext("a3");
setup.UpstreamSubscription.SendComplete();
setup.Downstream.ExpectNext("a3");
setup.Downstream.ExpectComplete();
downstream2.ExpectNoMsg(Dilated(TimeSpan.FromMilliseconds(100))); // as nothing was requested yet, fanOutBox needs to cache element in this case
downstream2Subscription.Request(1);
downstream2.ExpectNext("a3");
downstream2.ExpectComplete();
var downstream3 = this.CreateManualSubscriberProbe <string>();
setup.Publisher.Subscribe(downstream3);
downstream3.ExpectSubscription();
downstream3.ExpectError().Should().BeOfType <NormalShutdownException>();
}
public void A_Flow_with_multiple_subscribers_FanOutBox_must_support_incoming_subscriber_while_elements_were_requested_before()
{
var setup = new ChainSetup <string, string, NotUsed>(Identity, Settings.WithInputBuffer(1, 1),
(settings, factory) => ActorMaterializer.Create(factory, settings),
(source, materializer) => ToFanoutPublisher(source, materializer, 1), this);
setup.DownstreamSubscription.Request(5);
setup.Upstream.ExpectRequest(setup.UpstreamSubscription, 1);
setup.UpstreamSubscription.SendNext("a1");
setup.Downstream.ExpectNext("a1");
setup.Upstream.ExpectRequest(setup.UpstreamSubscription, 1);
setup.UpstreamSubscription.SendNext("a2");
setup.Downstream.ExpectNext("a2");
setup.Upstream.ExpectRequest(setup.UpstreamSubscription, 1);
// link now while an upstream element is already requested
var downstream2 = this.CreateManualSubscriberProbe <string>();
setup.Publisher.Subscribe(downstream2);
var downstream2Subscription = downstream2.ExpectSubscription();
// situation here:
// downstream 1 now has 3 outstanding
// downstream 2 has 0 outstanding
setup.UpstreamSubscription.SendNext("a3");
setup.Downstream.ExpectNext("a3");
downstream2.ExpectNoMsg(Dilated(TimeSpan.FromMilliseconds(100))); // as nothing was requested yet, fanOutBox needs to cache element in this case
downstream2Subscription.Request(1);
downstream2.ExpectNext("a3");
// d1 now has 2 outstanding
// d2 now has 0 outstanding
// buffer should be empty so we should be requesting one new element
setup.Upstream.ExpectRequest(setup.UpstreamSubscription, 1); // because of buffer size 1
}
public void A_Flow_with_multiple_subscribers_FanOutBox_must_call_future_subscribers_OnError_should_be_called_instead_of_OnSubscribed_after_initial_upstream_reported_an_error()
{
var setup = new ChainSetup <int, string, NotUsed>(flow => flow.Select <int, int, string, NotUsed>(_ =>
{
throw new TestException("test");
}), Settings.WithInputBuffer(1, 1),
(settings, factory) => ActorMaterializer.Create(factory, settings),
(source, materializer) => ToFanoutPublisher(source, materializer, 1), this);
setup.DownstreamSubscription.Request(1);
setup.UpstreamSubscription.ExpectRequest(1);
setup.UpstreamSubscription.SendNext(5);
setup.UpstreamSubscription.ExpectRequest(1);
setup.UpstreamSubscription.ExpectCancellation();
setup.Downstream.ExpectError().Should().BeOfType <TestException>();
var downstream2 = this.CreateManualSubscriberProbe <string>();
setup.Publisher.Subscribe(downstream2);
downstream2.ExpectSubscriptionAndError().Should().BeOfType <TestException>();
}
public void A_Flow_with_multiple_subscribers_FanOutBox_must_be_unblocked_when_blocking_subscriber_cancels_subscription()
{
var setup = new ChainSetup <string, string, NotUsed>(Identity, Settings.WithInputBuffer(1, 1),
(settings, factory) => ActorMaterializer.Create(factory, settings),
(source, materializer) => ToFanoutPublisher(source, materializer, 1), this);
var downstream2 = this.CreateManualSubscriberProbe <string>();
setup.Publisher.Subscribe(downstream2);
var downstream2Subscription = downstream2.ExpectSubscription();
setup.DownstreamSubscription.Request(5);
setup.UpstreamSubscription.ExpectRequest(1);
setup.UpstreamSubscription.SendNext("firstElement");
setup.Downstream.ExpectNext("firstElement");
downstream2Subscription.Request(1);
downstream2.ExpectNext("firstElement");
setup.UpstreamSubscription.ExpectRequest(1);
setup.UpstreamSubscription.SendNext("element2");
setup.Downstream.ExpectNext("element2");
setup.UpstreamSubscription.ExpectRequest(1);
setup.UpstreamSubscription.SendNext("element3");
setup.UpstreamSubscription.ExpectRequest(1);
setup.Downstream.ExpectNoMsg(Dilated(TimeSpan.FromMilliseconds(200)));
setup.Upstream.ExpectNoMsg(Dilated(TimeSpan.FromMilliseconds(200)));
downstream2.ExpectNoMsg(Dilated(TimeSpan.FromMilliseconds(200)));
// should unblock fanoutbox
downstream2Subscription.Cancel();
setup.Downstream.ExpectNext("element3");
setup.UpstreamSubscription.SendNext("element4");
setup.Downstream.ExpectNext("element4");
setup.UpstreamSubscription.SendComplete();
setup.Downstream.ExpectComplete();
}
