public async Task EHStatistics_MonitorCalledAccordingly()
{
var streamId = new FullStreamIdentity(Guid.NewGuid(), StreamNamespace, StreamProviderName);
//set up one slow consumer grain
var slowConsumer = this.fixture.GrainFactory.GetGrain <ISlowConsumingGrain>(Guid.NewGuid());
await slowConsumer.BecomeConsumer(streamId.Guid, StreamNamespace, StreamProviderName);
//set up 30 healthy consumer grain to show how much we favor slow consumer
int healthyConsumerCount = 30;
var healthyConsumers = await EHSlowConsumingTests.SetUpHealthyConsumerGrain(this.fixture.GrainFactory, streamId.Guid, StreamNamespace, StreamProviderName, healthyConsumerCount);
//configure data generator for stream and start producing
var mgmtGrain = this.fixture.GrainFactory.GetGrain <IManagementGrain>(0);
var randomStreamPlacementArg = new EventDataGeneratorStreamProvider.AdapterFactory.StreamRandomPlacementArg(streamId, this.seed.Next(100));
await mgmtGrain.SendControlCommandToProvider(typeof(EHStreamProviderForMonitorTests).FullName, StreamProviderName,
(int)EventDataGeneratorStreamProvider.AdapterFactory.Commands.Randomly_Place_Stream_To_Queue, randomStreamPlacementArg);
//since there's an extreme slow consumer, so the back pressure algorithm should be triggered
await TestingUtils.WaitUntilAsync(lastTry => AssertCacheBackPressureTriggered(true, lastTry), timeout);
//make slow consumer stop consuming
await slowConsumer.StopConsuming();
//assert EventHubReceiverMonitor call counters
var receiverMonitorCounters = await mgmtGrain.SendControlCommandToProvider(typeof(EHStreamProviderForMonitorTests).FullName, StreamProviderName,
(int)EHStreamProviderForMonitorTests.AdapterFactory.QueryCommands.GetReceiverMonitorCallCounters, null);
foreach (var callCounter in receiverMonitorCounters)
{
AssertReceiverMonitorCallCounters(callCounter as EventHubReceiverMonitorCounters);
}
var cacheMonitorCounters = await mgmtGrain.SendControlCommandToProvider(typeof(EHStreamProviderForMonitorTests).FullName, StreamProviderName,
(int)EHStreamProviderForMonitorTests.AdapterFactory.QueryCommands.GetCacheMonitorCallCounters, null);
foreach (var callCounter in cacheMonitorCounters)
{
AssertCacheMonitorCallCounters(callCounter as CacheMonitorCounters);
}
var objectPoolMonitorCounters = await mgmtGrain.SendControlCommandToProvider(typeof(EHStreamProviderForMonitorTests).FullName, StreamProviderName,
(int)EHStreamProviderForMonitorTests.AdapterFactory.QueryCommands.GetObjectPoolMonitorCallCounters, null);
foreach (var callCounter in objectPoolMonitorCounters)
{
AssertObjectPoolMonitorCallCounters(callCounter as ObjectPoolMonitorCounters);
}
}
public async Task EHStatistics_MonitorCalledAccordingly()
{
var streamId = new FullStreamIdentity(Guid.NewGuid(), StreamNamespace, StreamProviderName);
//set up 30 healthy consumer grain to show how much we favor slow consumer
int healthyConsumerCount = 30;
_ = await EHSlowConsumingTests.SetUpHealthyConsumerGrain(this.fixture.GrainFactory, streamId.Guid, StreamNamespace, StreamProviderName, healthyConsumerCount);
//configure data generator for stream and start producing
var mgmtGrain = this.fixture.GrainFactory.GetGrain <IManagementGrain>(0);
var randomStreamPlacementArg = new EHStreamProviderForMonitorTestsAdapterFactory.StreamRandomPlacementArg(streamId, this.seed.Next(100));
await mgmtGrain.SendControlCommandToProvider(typeof(PersistentStreamProvider).FullName, StreamProviderName,
(int)EHStreamProviderForMonitorTestsAdapterFactory.Commands.Randomly_Place_Stream_To_Queue, randomStreamPlacementArg);
// let the test to run for a while to build up some streaming traffic
await Task.Delay(timeout);
//wait sometime after cache pressure changing, for the system to notice it and trigger cache monitor to track it
await mgmtGrain.SendControlCommandToProvider(typeof(PersistentStreamProvider).FullName, StreamProviderName,
(int)EHStreamProviderForMonitorTestsAdapterFactory.QueryCommands.ChangeCachePressure, null);
await Task.Delay(timeout);
//assert EventHubReceiverMonitor call counters
var receiverMonitorCounters = await mgmtGrain.SendControlCommandToProvider(typeof(PersistentStreamProvider).FullName, StreamProviderName,
(int)EHStreamProviderForMonitorTestsAdapterFactory.QueryCommands.GetReceiverMonitorCallCounters, null);
foreach (var callCounter in receiverMonitorCounters)
{
AssertReceiverMonitorCallCounters(callCounter as EventHubReceiverMonitorCounters);
}
var cacheMonitorCounters = await mgmtGrain.SendControlCommandToProvider(typeof(PersistentStreamProvider).FullName, StreamProviderName,
(int)EHStreamProviderForMonitorTestsAdapterFactory.QueryCommands.GetCacheMonitorCallCounters, null);
foreach (var callCounter in cacheMonitorCounters)
{
AssertCacheMonitorCallCounters(callCounter as CacheMonitorCounters);
}
var objectPoolMonitorCounters = await mgmtGrain.SendControlCommandToProvider(typeof(PersistentStreamProvider).FullName, StreamProviderName,
(int)EHStreamProviderForMonitorTestsAdapterFactory.QueryCommands.GetObjectPoolMonitorCallCounters, null);
foreach (var callCounter in objectPoolMonitorCounters)
{
AssertObjectPoolMonitorCallCounters(callCounter as ObjectPoolMonitorCounters);
}
}