| public GetRollingSum ( RollingNumberEvent ev, long startWindowTime = 0L ) : long | ||
| ev | RollingNumberEvent | |
| startWindowTime | long | |
| Résultat | long | |
internal HealthCounts GetHealthCounts()
{
// we put an interval between snapshots so high-volume commands don't
// spend too much unnecessary time calculating metrics in very small time periods
long lastTime = this.lastHealthCountsSnapshot;
long currentTime = _clock.EllapsedTimeInMs;
if (currentTime - lastTime >= this._properties.MetricsHealthSnapshotIntervalInMilliseconds.Value || healthCountsSnapshot.IsEmpty)
{
if (Interlocked.CompareExchange(ref this.lastHealthCountsSnapshot, currentTime, lastTime) == lastTime)
{
long lastReset = _lastReset;
// our thread won setting the snapshot time so we will proceed with generating a new snapshot
// losing threads will continue using the old snapshot
long success = _counter.GetRollingSum(RollingNumberEvent.SUCCESS, lastReset);
long failure = _counter.GetRollingSum(RollingNumberEvent.FAILURE, lastReset); // fallbacks occur on this
long timeout = _counter.GetRollingSum(RollingNumberEvent.TIMEOUT, lastReset); // fallbacks occur on this
long threadPoolRejected = _counter.GetRollingSum(RollingNumberEvent.THREAD_POOL_REJECTED, lastReset); // fallbacks occur on this
long semaphoreRejected = _counter.GetRollingSum(RollingNumberEvent.SEMAPHORE_REJECTED, lastReset); // fallbacks occur on this
long shortCircuited = _counter.GetRollingSum(RollingNumberEvent.SHORT_CIRCUITED, lastReset); // fallbacks occur on this
long totalCount = failure + success + timeout + threadPoolRejected + shortCircuited + semaphoreRejected;
long errorCount = failure + timeout + threadPoolRejected + shortCircuited + semaphoreRejected;
int errorPercentage = 0;
if (totalCount > 0)
{
errorPercentage = (int)((double)errorCount / totalCount * 100);
}
healthCountsSnapshot = new HealthCounts(totalCount, errorCount, errorPercentage);
}
}
return(healthCountsSnapshot);
}
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 testEmptySum()
{
MockedClock time = new MockedClock();
RollingNumberEvent type = RollingNumberEvent.SUCCESS;
RollingNumber counter = new RollingNumber(time, 200, 10);
Assert.Equal(0, counter.GetRollingSum(type));
}
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));
}