public async Task UnregisterProducerFaultTest()
{
this.fixture.Logger.Info("************************ UnregisterProducerFaultTest *********************************");
var streamId = StreamId.GetStreamId(Guid.NewGuid(), "ProviderName", "StreamNamespace");
var pubSubGrain = this.fixture.GrainFactory.GetGrain <IPubSubRendezvousGrain>(
streamId.Guid,
keyExtension: streamId.ProviderName + "_" + streamId.Namespace);
var faultGrain = this.fixture.GrainFactory.GetGrain <IStorageFaultGrain>(typeof(PubSubRendezvousGrain).FullName);
IStreamProducerExtension firstProducer = new DummyStreamProducerExtension();
IStreamProducerExtension secondProducer = new DummyStreamProducerExtension();
// Add two producers so when we remove the first it does a storage write, not a storage clear.
await pubSubGrain.RegisterProducer(streamId, firstProducer);
await pubSubGrain.RegisterProducer(streamId, secondProducer);
int producers = await pubSubGrain.ProducerCount(streamId);
Assert.Equal(2, producers);
// inject fault
await faultGrain.AddFaultOnWrite(pubSubGrain as GrainReference, new ApplicationException("Write"));
// expect exception when unregistering a producer
await Assert.ThrowsAsync <OrleansException>(
() => pubSubGrain.UnregisterProducer(streamId, firstProducer));
// pubsub grain should recover and still function
await pubSubGrain.UnregisterProducer(streamId, firstProducer);
producers = await pubSubGrain.ProducerCount(streamId);
Assert.Equal(1, producers);
// inject clear fault, because removing last producers should trigger a clear storage call.
await faultGrain.AddFaultOnClear(pubSubGrain as GrainReference, new ApplicationException("Write"));
// expect exception when unregistering a consumer
await Assert.ThrowsAsync <OrleansException>(
() => pubSubGrain.UnregisterProducer(streamId, secondProducer));
// pubsub grain should recover and still function
await pubSubGrain.UnregisterProducer(streamId, secondProducer);
producers = await pubSubGrain.ConsumerCount(streamId);
Assert.Equal(0, producers);
}
private bool Equals(DummyStreamProducerExtension other)
{
return(id.Equals(other.id));
}