public async Task SendMetrics_WhenInvoked_CompletesSuccessfully()
{
var metricsBucket = new ThreadSafeMetricsBucket();
metricsBucket.RegisterCount("Demo123", true);
metricsBucket.RegisterCount("Demo123", false);
var result = await Client.SendMetrics(metricsBucket, CancellationToken.None);
Assert.True(result);
// Check result:
// http://unleash.herokuapp.com/#/features/view/Demo123
// http://unleash.herokuapp.com/api/admin/metrics/feature-toggles
}
public async Task SendMetrics_Success()
{
var metricsBucket = new ThreadSafeMetricsBucket();
metricsBucket.RegisterCount("Demo123", true);
metricsBucket.RegisterCount("Demo123", false);
var result = await api.SendMetrics(metricsBucket, CancellationToken.None);
result.Should().Be(true);
// Check result:
// http://unleash.herokuapp.com/#/features/view/Demo123
// http://unleash.herokuapp.com/api/admin/metrics/feature-toggles
}
public void RegisterCount_WhenInvokedFromMultipleThreadsAndCheckedIncrementally_BehavesPredictably(int maxDegreeOfParallelism, long totalRegistrations, int featureToggleCount, double breakPercent)
{
var metricsBucket = new ThreadSafeMetricsBucket();
var options = new ParallelOptions
{
MaxDegreeOfParallelism = maxDegreeOfParallelism
};
var breaks = totalRegistrations * breakPercent;
var toggleCounter = 0L;
var recordedTasks = 0L;
var exceptions = new ConcurrentBag <Exception>();
var result = Parallel.For(1, totalRegistrations + 1, options, state =>
{
try
{
Interlocked.Increment(ref recordedTasks);
var toggleName = (state % featureToggleCount).ToString();
var active = DateTime.Now.Ticks % 2 == 0;
metricsBucket.RegisterCount(toggleName, active);
if (state % breaks == 0)
{
using (metricsBucket.StopCollectingMetrics(out var bucket))
{
var count = GetNumberOfRegistrations(bucket);
Interlocked.Add(ref toggleCounter, count);
_testOutputHelper.WriteLine($"Locking bucket at #{state} with {toggleCounter} toggle registrations");
}
}
public void SingleBucket_OneCountPerTask3()
{
var metricsBucket = new ThreadSafeMetricsBucket();
var options = new ParallelOptions
{
MaxDegreeOfParallelism = 10,
};
var totalTasks = 1000000L;
var breaks = totalTasks / 10;
long toggleCounter = 0;
long recordedTasks = 0;
var result = Parallel.For(1, totalTasks + 1, options, state =>
{
Interlocked.Increment(ref recordedTasks);
var toggleName = (state % 50).ToString();
var active = DateTime.Now.Ticks % 2 == 0;
metricsBucket.RegisterCount(toggleName, active);
if (state % breaks == 0)
{
using (metricsBucket.StopCollectingMetrics(out var bucket))
{
var count = GetNumberOfRegistrations(bucket);
Interlocked.Add(ref toggleCounter, count);
Console.WriteLine($"Locking bucket at #{state} with {toggleCounter} toggle registrations");
}
}
public void SingleBucket_No_WriteOperations()
{
var metricsBucket = new ThreadSafeMetricsBucket();
var options = new ParallelOptions
{
MaxDegreeOfParallelism = 50,
};
var totalTasks = 1000000;
var numFeatureToggles = 50;
Parallel.For(0, totalTasks, options, state =>
{
var i = (state % numFeatureToggles).ToString();
var predicate = DateTime.Now.Ticks % 2 == 0;
metricsBucket.RegisterCount(i, predicate);
});
using (metricsBucket.StopCollectingMetrics(out var bucket))
{
bucket.Toggles.Count.Should().Be(numFeatureToggles);
// Should be cleared
var count = GetNumberOfRegistrations(bucket);
count.Should().Be(totalTasks);
}
}
public void RegisterCount_WhenInvokedFromMultipleThreadsAndCheckedAtCompletion_BehavesPredictably(int maxDegreeOfParallelism, int totalRegistrations, int featureToggleCount)
{
var metricsBucket = new ThreadSafeMetricsBucket();
var options = new ParallelOptions
{
MaxDegreeOfParallelism = maxDegreeOfParallelism
};
var exceptions = new ConcurrentBag <Exception>();
var result = Parallel.For(0, totalRegistrations, options, state =>
{
try
{
var toggleName = (state % featureToggleCount).ToString();
var active = DateTime.Now.Ticks % 2 == 0;
metricsBucket.RegisterCount(toggleName, active);
}
catch (Exception exc)
{
exceptions.Add(exc);
}
});
if (exceptions.Count > 0)
{
throw new AggregateException(exceptions);
}
Assert.True(result.IsCompleted);
using (metricsBucket.StopCollectingMetrics(out var bucket))
{
Assert.Equal(featureToggleCount, bucket.Toggles.Count);
var actualRegistrations = GetNumberOfRegistrations(bucket);
Assert.Equal(totalRegistrations, actualRegistrations);
}
}
