public void testCreatesBuckets()
{
var time = new MockedClock();
var counter = new RollingNumber(time, 200, 10);
// confirm the initial settings
Assert.Equal(200, counter.TimeInMs);
Assert.Equal(10, counter.NumberOfBuckets);
Assert.Equal(20, counter.BucketSizeInMs);
// add a Success in each interval which should result in all 10 buckets being created with 1 Success in each
for (int i = 0; i < counter.NumberOfBuckets; i++)
{
counter.Increment(RollingNumberEvent.SUCCESS);
time.Increment(counter.BucketSizeInMs);
}
// confirm we have all 10 buckets
var buckets = counter.GetBuckets().ToArray();
Assert.Equal(10, buckets.Length);
// add 1 more and we should still only have 10 buckets since that's the max
counter.Increment(RollingNumberEvent.SUCCESS);
buckets = counter.GetBuckets().ToArray();
Assert.Equal(10, buckets.Length);
}
public void testResetBuckets()
{
MockedClock time = new MockedClock();
RollingNumber counter = new RollingNumber(time, 200, 10);
// add 1
counter.Increment(RollingNumberEvent.SUCCESS);
// confirm we have 1 bucket
var buckets = counter.GetBuckets().ToArray();
Assert.Equal(1, buckets.Length);
// confirm we still have 1 bucket
Assert.Equal(1, buckets.Length);
// add 1
counter.Increment(RollingNumberEvent.SUCCESS);
// we should now have a single bucket with no values in it instead of 2 or more buckets
buckets = counter.GetBuckets().ToArray();
Assert.Equal(1, buckets.Length);
}
public void testIncrementInSingleBucket()
{
MockedClock time = new MockedClock();
RollingNumber counter = new RollingNumber(time, 200, 10);
// increment
counter.Increment(RollingNumberEvent.SUCCESS);
counter.Increment(RollingNumberEvent.SUCCESS);
counter.Increment(RollingNumberEvent.SUCCESS);
counter.Increment(RollingNumberEvent.SUCCESS);
counter.Increment(RollingNumberEvent.FAILURE);
counter.Increment(RollingNumberEvent.FAILURE);
counter.Increment(RollingNumberEvent.TIMEOUT);
// we should have 1 bucket
var buckets = counter.GetBuckets().ToArray();
Assert.Equal(1, buckets.Length);
// the count should be 4
Assert.Equal(4, counter.GetCurrentBucket().GetAdder(RollingNumberEvent.SUCCESS));
Assert.Equal(2, counter.GetCurrentBucket().GetAdder(RollingNumberEvent.FAILURE));
Assert.Equal(1, counter.GetCurrentBucket().GetAdder(RollingNumberEvent.TIMEOUT));
}
public void testTimeout()
{
MockedClock time = new MockedClock();
RollingNumber counter = new RollingNumber(time, 200, 10);
// increment
counter.Increment(RollingNumberEvent.TIMEOUT);
var buckets = counter.GetBuckets().ToArray();
// we should have 1 bucket
Assert.Equal(1, buckets.Count());
// the count should be 1
Assert.Equal(1, buckets.First().GetAdder(RollingNumberEvent.TIMEOUT));
Assert.Equal(1, counter.GetRollingSum(RollingNumberEvent.TIMEOUT));
// sleep to get to a new bucket
time.Increment(counter.BucketSizeInMs * 3);
// incremenet again in latest bucket
counter.Increment(RollingNumberEvent.TIMEOUT);
// we should have 2 buckets
buckets = counter.GetBuckets().ToArray();
Assert.Equal(2, buckets.Length);
// the counts of the last bucket
Assert.Equal(1, buckets.First().GetAdder(RollingNumberEvent.TIMEOUT));
// the total counts
Assert.Equal(2, counter.GetRollingSum(RollingNumberEvent.TIMEOUT));
}
public void testUpdateMax2()
{
MockedClock time = new MockedClock();
RollingNumber counter = new RollingNumber(time, 200, 10);
// increment
counter.UpdateRollingMax(RollingNumberEvent.THREAD_MAX_ACTIVE, 10);
counter.UpdateRollingMax(RollingNumberEvent.THREAD_MAX_ACTIVE, 30);
counter.UpdateRollingMax(RollingNumberEvent.THREAD_MAX_ACTIVE, 20);
// we should have 1 bucket
var buckets = counter.GetBuckets().ToArray();
Assert.Equal(1, buckets.Length);
// the count should be 30
Assert.Equal(30, counter.buckets.First().GetMaxUpdater(RollingNumberEvent.THREAD_MAX_ACTIVE));
Assert.Equal(30, counter.GetRollingMaxValue(RollingNumberEvent.THREAD_MAX_ACTIVE));
// sleep to get to a new bucket
time.Increment(counter.BucketSizeInMs * 3);
counter.UpdateRollingMax(RollingNumberEvent.THREAD_MAX_ACTIVE, 30);
counter.UpdateRollingMax(RollingNumberEvent.THREAD_MAX_ACTIVE, 30);
counter.UpdateRollingMax(RollingNumberEvent.THREAD_MAX_ACTIVE, 50);
// we should have 2 buckets
buckets = counter.GetBuckets().ToArray();
Assert.Equal(2, buckets.Length);
// the count
Assert.Equal(50, buckets.First().GetMaxUpdater(RollingNumberEvent.THREAD_MAX_ACTIVE));
Assert.Equal(50, counter.GetValueOfLatestBucket(RollingNumberEvent.THREAD_MAX_ACTIVE));
// values per bucket
var values = counter.GetValues(RollingNumberEvent.THREAD_MAX_ACTIVE).ToArray();
Assert.Equal(30, values[1]); // oldest bucket
Assert.Equal(50, values[0]); // latest bucket
}
public void testCounterRetrievalRefreshesBuckets()
{
MockedClock time = new MockedClock();
RollingNumber counter = new RollingNumber(time, 200, 10);
// increment
counter.Increment(RollingNumberEvent.SUCCESS);
counter.Increment(RollingNumberEvent.SUCCESS);
counter.Increment(RollingNumberEvent.SUCCESS);
counter.Increment(RollingNumberEvent.SUCCESS);
counter.Increment(RollingNumberEvent.FAILURE);
counter.Increment(RollingNumberEvent.FAILURE);
// sleep to get to a new bucket
time.Increment(counter.BucketSizeInMs * 3);
var buckets = counter.GetBuckets().ToArray();
// we should have 1 bucket since nothing has triggered the update of buckets in the elapsed time
Assert.Equal(1, buckets.Length);
// the total counts
Assert.Equal(4, counter.GetRollingSum(RollingNumberEvent.SUCCESS));
Assert.Equal(2, counter.GetRollingSum(RollingNumberEvent.FAILURE));
// we should have 2 buckets as the counter 'gets' should have triggered the buckets being created to fill in time
buckets = counter.GetBuckets().ToArray();
Assert.Equal(2, buckets.Length);
// wait until window passes
time.Increment(counter.TimeInMs);
// the total counts should all be 0 (and the buckets cleared by the get, not only increment)
Assert.Equal(0, counter.GetRollingSum(RollingNumberEvent.SUCCESS));
Assert.Equal(0, counter.GetRollingSum(RollingNumberEvent.FAILURE));
// increment
counter.Increment(RollingNumberEvent.SUCCESS);
// the total counts should now include only the last bucket after a reset since the window passed
Assert.Equal(1, counter.GetRollingSum(RollingNumberEvent.SUCCESS));
Assert.Equal(0, counter.GetRollingSum(RollingNumberEvent.FAILURE));
}
public void testIncrementInMultipleBuckets()
{
MockedClock time = new MockedClock();
RollingNumber counter = new RollingNumber(time, 200, 10);
// increment
counter.Increment(RollingNumberEvent.SUCCESS);
counter.Increment(RollingNumberEvent.SUCCESS);
counter.Increment(RollingNumberEvent.SUCCESS);
counter.Increment(RollingNumberEvent.SUCCESS);
counter.Increment(RollingNumberEvent.FAILURE);
counter.Increment(RollingNumberEvent.FAILURE);
counter.Increment(RollingNumberEvent.TIMEOUT);
counter.Increment(RollingNumberEvent.TIMEOUT);
counter.Increment(RollingNumberEvent.SHORT_CIRCUITED);
// sleep to get to a new bucket
time.Increment(counter.BucketSizeInMs * 3);
// increment
counter.Increment(RollingNumberEvent.SUCCESS);
counter.Increment(RollingNumberEvent.SUCCESS);
counter.Increment(RollingNumberEvent.FAILURE);
counter.Increment(RollingNumberEvent.FAILURE);
counter.Increment(RollingNumberEvent.FAILURE);
counter.Increment(RollingNumberEvent.TIMEOUT);
counter.Increment(RollingNumberEvent.SHORT_CIRCUITED);
// we should have 2 buckets
var buckets = counter.GetBuckets().ToArray();
Assert.Equal(2, buckets.Length);
// the counts of the last bucket
Assert.Equal(2, buckets.First().GetAdder(RollingNumberEvent.SUCCESS));
Assert.Equal(3, buckets.First().GetAdder(RollingNumberEvent.FAILURE));
Assert.Equal(1, buckets.First().GetAdder(RollingNumberEvent.TIMEOUT));
Assert.Equal(1, buckets.First().GetAdder(RollingNumberEvent.SHORT_CIRCUITED));
// the total counts
Assert.Equal(6, counter.GetRollingSum(RollingNumberEvent.SUCCESS));
Assert.Equal(5, counter.GetRollingSum(RollingNumberEvent.FAILURE));
Assert.Equal(3, counter.GetRollingSum(RollingNumberEvent.TIMEOUT));
Assert.Equal(2, counter.GetRollingSum(RollingNumberEvent.SHORT_CIRCUITED));
// wait until window passes
time.Increment(counter.TimeInMs*10);
// increment
counter.Increment(RollingNumberEvent.SUCCESS);
// the total counts should now include only the last bucket after a reset since the window passed
Assert.Equal(1, counter.GetRollingSum(RollingNumberEvent.SUCCESS));
Assert.Equal(0, counter.GetRollingSum(RollingNumberEvent.FAILURE));
Assert.Equal(0, counter.GetRollingSum(RollingNumberEvent.TIMEOUT));
}
