public async Task AddAndRemoveSubscriptionTest(Guid streamGuid, string streamNamespace)
{
// get producer and consumer
ISampleStreaming_ProducerGrain producer = SampleStreaming_ProducerGrainFactory.GetGrain(Guid.NewGuid());
IMultipleSubscriptionConsumerGrain consumer = MultipleSubscriptionConsumerGrainFactory.GetGrain(Guid.NewGuid());
await producer.BecomeProducer(streamGuid, streamNamespace, streamProviderName);
// setup one subscription and send messsages
StreamSubscriptionHandle <int> firstSubscriptionHandle = await consumer.BecomeConsumer(streamGuid, streamNamespace, streamProviderName);
await producer.StartPeriodicProducing();
await Task.Delay(TimeSpan.FromMilliseconds(1000));
await producer.StopPeriodicProducing();
await TestingUtils.WaitUntilAsync(lastTry => CheckCounters(producer, consumer, 1, lastTry), Timeout);
// clear counts
await consumer.ClearNumberConsumed();
await producer.ClearNumberProduced();
// setup second subscription and send messages
StreamSubscriptionHandle <int> secondSubscriptionHandle = await consumer.BecomeConsumer(streamGuid, streamNamespace, streamProviderName);
await producer.StartPeriodicProducing();
await Task.Delay(TimeSpan.FromMilliseconds(1000));
await producer.StopPeriodicProducing();
await TestingUtils.WaitUntilAsync(lastTry => CheckCounters(producer, consumer, 2, lastTry), Timeout);
// clear counts
await consumer.ClearNumberConsumed();
await producer.ClearNumberProduced();
// remove first subscription and send messages
await consumer.StopConsuming(firstSubscriptionHandle);
await producer.StartPeriodicProducing();
await Task.Delay(TimeSpan.FromMilliseconds(1000));
await producer.StopPeriodicProducing();
await TestingUtils.WaitUntilAsync(lastTry => CheckCounters(producer, consumer, 1, lastTry), Timeout);
// remove second subscription
await consumer.StopConsuming(secondSubscriptionHandle);
}
