Esempio n. 1
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        public void CreateAggregateUnsafe()
        {
            var aggregationManager = new MetricAggregationManager();
            var seriesConfig       = new MetricSeriesConfigurationForMeasurement(restrictToUInt32Values: true);

            IEnumerable <KeyValuePair <string, string> > setDimensionNamesValues = new KeyValuePair <string, string>[] { new KeyValuePair <string, string>("Dim 1", "DV1"),
                                                                                                                         new KeyValuePair <string, string>("Dim 2", "DV2"),
                                                                                                                         new KeyValuePair <string, string>("Dim 3", "DV3"),
                                                                                                                         new KeyValuePair <string, string>("Dim 2", "DV2a") };

            IEnumerable <KeyValuePair <string, string> > expectedDimensionNamesValues = new KeyValuePair <string, string>[] { new KeyValuePair <string, string>("Dim 1", "DV1"),
                                                                                                                              new KeyValuePair <string, string>("Dim 2", "DV2a"),
                                                                                                                              new KeyValuePair <string, string>("Dim 3", "DV3") };

            var metric = new MetricSeries(
                aggregationManager,
                new MetricIdentifier(String.Empty, "Cows Sold", expectedDimensionNamesValues.Select(nv => nv.Key).ToArray()),
                setDimensionNamesValues,
                seriesConfig);

            var aggregator = new MeasurementAggregator(
                (MetricSeriesConfigurationForMeasurement)metric.GetConfiguration(),
                metric,
                CycleKind.Custom);

            CommonSimpleDataSeriesAggregatorTests.CreateAggregateUnsafe(aggregator, metric, expectedDimensionNamesValues);
        }
Esempio n. 2
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        public MeasurementAggregator(MetricSeriesConfigurationForMeasurement configuration, MetricSeries dataSeries, MetricAggregationCycleKind aggregationCycleKind)
            : base(MetricValuesBufferFactory, configuration, dataSeries, aggregationCycleKind)
        {
            Util.ValidateNotNull(configuration, nameof(configuration));

            this.restrictToUInt32Values = configuration.RestrictToUInt32Values;
            this.ResetAggregate();
        }
        public void ResetAggregationDateTimeOffset()
        {
            // Do not start this test in the last 10 secs or first 2 secs of a minute, to make sure the timings below are likely to work out.

            while (DateTimeOffset.Now.Second >= 49 || DateTimeOffset.Now.Second < 3)
            {
                Thread.Sleep(TimeSpan.FromMilliseconds(500));
            }

            DateTimeOffset startTS = DateTimeOffset.Now;

            var aggregateCollector            = new MemoryMetricTelemetryPipeline();
            var manager                       = new MetricManager(aggregateCollector);
            IMetricSeriesConfiguration config = new MetricSeriesConfigurationForMeasurement(restrictToUInt32Values: false);
            MetricSeries series               = manager.CreateNewSeries("ns", "Foo Bar", config);

            series.TrackValue(0.4);
            series.TrackValue(2);
            series.TrackValue(-2);

            Thread.Sleep(TimeSpan.FromMilliseconds(1500));

            DateTimeOffset resetTS = DateTimeOffset.Now;

            series.ResetAggregation(resetTS);

            series.TrackValue(0.17);
            series.TrackValue(0.32);
            series.TrackValue(-0.15);
            series.TrackValue(1.07);

            Assert.AreEqual(0, aggregateCollector.Count);
            manager.Flush();
            Assert.AreEqual(1, aggregateCollector.Count);

            DateTimeOffset endTS = DateTimeOffset.Now;

            TestUtil.ValidateNumericAggregateValues(aggregateCollector[0], ns: "ns", name: "Foo Bar", count: 4, sum: 1.41, max: 1.07, min: -0.15, stdDev: 0.447681527427702, aggKindMoniker: "Microsoft.Azure.Measurement");

            // The following might break sometimes!
            // There is a little chance that second boundary is crossed between startTS and the aggregation timestamps are snapped.
            // rerun the test if it happens.

            Assert.AreNotEqual(
                new DateTimeOffset(startTS.Year, startTS.Month, startTS.Day, startTS.Hour, startTS.Minute, startTS.Second, 0, startTS.Offset),
                aggregateCollector[0].AggregationPeriodStart);

            Assert.AreEqual(
                new DateTimeOffset(resetTS.Year, resetTS.Month, resetTS.Day, resetTS.Hour, resetTS.Minute, resetTS.Second, 0, resetTS.Offset),
                aggregateCollector[0].AggregationPeriodStart);

            TestUtil.CompleteDefaultAggregationCycle(manager);
        }
        public void Properties()
        {
            var manager = new MetricManager(new MemoryMetricTelemetryPipeline());
            IMetricSeriesConfiguration config = new MetricSeriesConfigurationForMeasurement(restrictToUInt32Values: false);
            MetricSeries series = manager.CreateNewSeries("Foo Bar", config);

            Assert.AreEqual("Foo Bar", series.MetricId);

            Assert.AreEqual(config, series.GetConfiguration());
            Assert.AreSame(config, series.GetConfiguration());

            Util.CompleteDefaultAggregationCycle(manager);
        }
Esempio n. 5
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        public void Flush()
        {
            {
                var metricsCollector = new MemoryMetricTelemetryPipeline();
                var manager          = new MetricManager(metricsCollector);
                manager.Flush();

                Assert.AreEqual(0, metricsCollector.Count);
                TestUtil.CompleteDefaultAggregationCycle(manager);
            }
            {
                var metricsCollector = new MemoryMetricTelemetryPipeline();
                var manager          = new MetricManager(metricsCollector);

                IMetricSeriesConfiguration measurementConfig = new MetricSeriesConfigurationForMeasurement(restrictToUInt32Values: false);

                MetricSeries series1 = manager.CreateNewSeries("Test Metrics", "Measurement 1", measurementConfig);
                MetricSeries series2 = manager.CreateNewSeries("Test Metrics", "Measurement 2", measurementConfig);

                series1.TrackValue(1);
                series1.TrackValue(1);
                series1.TrackValue(1);

                series2.TrackValue(-1);
                series2.TrackValue(-1);
                series2.TrackValue(-1);

                manager.Flush();

                Assert.AreEqual(2, metricsCollector.Count);

                Assert.AreEqual(1, metricsCollector.Where((item) => item.MetricId.Equals("Measurement 1")).Count());
                Assert.AreEqual("Test Metrics", (metricsCollector.First((item) => item.MetricId.Equals("Measurement 1"))).MetricNamespace);
                Assert.AreEqual(3, (metricsCollector.First((item) => item.MetricId.Equals("Measurement 1"))).Data["Count"]);
                Assert.AreEqual(3.0, (metricsCollector.First((item) => item.MetricId.Equals("Measurement 1"))).Data["Sum"]);

                Assert.AreEqual(1, metricsCollector.Where((item) => item.MetricId.Equals("Measurement 2")).Count());
                Assert.AreEqual("Test Metrics", (metricsCollector.First((item) => item.MetricId.Equals("Measurement 2"))).MetricNamespace);
                Assert.AreEqual(3, (metricsCollector.First((item) => item.MetricId.Equals("Measurement 2"))).Data["Count"]);
                Assert.AreEqual(-3.0, (metricsCollector.First((item) => item.MetricId.Equals("Measurement 2"))).Data["Sum"]);

                metricsCollector.Clear();
                Assert.AreEqual(0, metricsCollector.Count);

                manager.Flush();

                Assert.AreEqual(0, metricsCollector.Count);

                TestUtil.CompleteDefaultAggregationCycle(manager);
            }
        }
Esempio n. 6
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        public void CompleteAggregation()
        {
            var aggregationManager = new MetricAggregationManager();

            var mesurementConfig  = new MetricSeriesConfigurationForMeasurement(restrictToUInt32Values: true);
            var measurementMetric = new MetricSeries(aggregationManager, new MetricIdentifier("Cows Sold"), null, mesurementConfig);

            var measurementAggregator = new MeasurementAggregator(
                (MetricSeriesConfigurationForMeasurement)measurementMetric.GetConfiguration(),
                measurementMetric,
                CycleKind.Custom);

            CommonSimpleDataSeriesAggregatorTests.CompleteAggregation_NonpersistentAggregator(measurementAggregator);
        }
        /// <summary>Checks whether this configuration is semantically equat to a specified configuration.</summary>
        /// <param name="other">Some configuration objects.</param>
        /// <returns><c>true</c> if the specified object is a configutation that is semantically equal to this configuration;
        /// <c>false</c> otherwise.</returns>
        public bool Equals(MetricSeriesConfigurationForMeasurement other)
        {
            if (other == null)
            {
                return(false);
            }

            if (Object.ReferenceEquals(this, other))
            {
                return(true);
            }

            return(this.RestrictToUInt32Values == other.RestrictToUInt32Values);
        }
        public void TrackValueDouble()
        {
            DateTimeOffset startTS = DateTimeOffset.Now;

            var aggregateCollector            = new MemoryMetricTelemetryPipeline();
            var manager                       = new MetricManager(aggregateCollector);
            IMetricSeriesConfiguration config = new MetricSeriesConfigurationForMeasurement(restrictToUInt32Values: false);
            MetricSeries series               = manager.CreateNewSeries("ns", "Foo Bar", config);

            Thread.Sleep(1500);

            series.TrackValue(0.4);
            series.TrackValue(0.8);
            series.TrackValue(-0.04);

            Assert.AreEqual(0, aggregateCollector.Count);
            manager.Flush();
            Assert.AreEqual(1, aggregateCollector.Count);

            DateTimeOffset endTSRounded = DateTimeOffset.Now;

            endTSRounded = new DateTimeOffset(endTSRounded.Year, endTSRounded.Month, endTSRounded.Day, endTSRounded.Hour, endTSRounded.Minute, endTSRounded.Second, 0, endTSRounded.Offset);

            TestUtil.ValidateNumericAggregateValues(aggregateCollector[0], ns: "ns", name: "Foo Bar", count: 3, sum: 1.16, max: 0.8, min: -0.04, stdDev: 0.343058142140496, aggKindMoniker: "Microsoft.Azure.Measurement");

            // Timestamp checks have to be approximate, since we have no possibilityt to get exact timetamps snapped internally.

            // The following might break sometimes!
            // There is a little chance that second boundary is crossed between startTS and the aggregation timestamps are snapped.
            // rerun the test if it happens.

            Assert.AreEqual(
                new DateTimeOffset(startTS.Year, startTS.Month, startTS.Day, startTS.Hour, startTS.Minute, startTS.Second, 0, startTS.Offset),
                aggregateCollector[0].AggregationPeriodStart);

            const int millisecsTollerance = 50;
            long      durationMs          = (long)aggregateCollector[0].AggregationPeriodDuration.TotalMilliseconds;

            Assert.IsTrue(Math.Abs(durationMs - (endTSRounded - aggregateCollector[0].AggregationPeriodStart).TotalMilliseconds) < millisecsTollerance);

            Assert.AreEqual(1, aggregateCollector.Count);
            aggregateCollector.Clear();
            Assert.AreEqual(0, aggregateCollector.Count);

            manager.Flush();
            Assert.AreEqual(0, aggregateCollector.Count);

            TestUtil.CompleteDefaultAggregationCycle(manager);
        }
Esempio n. 9
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        public void GetDataSeries()
        {
            var aggregationManager = new MetricAggregationManager();
            var seriesConfig       = new MetricSeriesConfigurationForMeasurement(restrictToUInt32Values: true);
            var metric             = new MetricSeries(aggregationManager, new MetricIdentifier("Cows Sold"), null, seriesConfig);

            var aggregatorForConcreteSeries = new MeasurementAggregator(
                (MetricSeriesConfigurationForMeasurement)metric.GetConfiguration(),
                dataSeries: metric,
                aggregationCycleKind: CycleKind.Custom);

            var aggregatorForNullSeries = new MeasurementAggregator(
                new MetricSeriesConfigurationForMeasurement(restrictToUInt32Values: true),
                dataSeries: null,
                aggregationCycleKind: CycleKind.Custom);

            CommonSimpleDataSeriesAggregatorTests.GetDataSeries(aggregatorForConcreteSeries, aggregatorForNullSeries, metric);
        }
        public void CreateNewSeries()
        {
            var manager = new MetricManager(new MemoryMetricTelemetryPipeline());

            IMetricSeriesConfiguration config = new MetricSeriesConfigurationForMeasurement(restrictToUInt32Values: false);

            Assert.ThrowsException <ArgumentNullException>(() => manager.CreateNewSeries(null, config));
            Assert.ThrowsException <ArgumentNullException>(() => manager.CreateNewSeries("Foo Bar", null));

            MetricSeries series = manager.CreateNewSeries("Foo Bar", config);

            Assert.IsNotNull(series);

            Assert.AreEqual(config, series.GetConfiguration());
            Assert.AreSame(config, series.GetConfiguration());

            Assert.AreEqual("Foo Bar", series.MetricId);

            Util.CompleteDefaultAggregationCycle(manager);
        }
        public void CompleteAggregation()
        {
            var aggregationManager = new MetricAggregationManager();

            var mesurementConfig  = new MetricSeriesConfigurationForMeasurement(restrictToUInt32Values: false);
            var measurementMetric = new MetricSeries(aggregationManager, new MetricIdentifier("Animal Metrics", "Cows Sold"), null, mesurementConfig);

            var measurementAggregator = new MeasurementAggregator(
                (MetricSeriesConfigurationForMeasurement)measurementMetric.GetConfiguration(),
                measurementMetric,
                CycleKind.Custom);

            var accumulatorConfig = new MetricSeriesConfigurationForTestingAccumulatorBehavior();
            var accumulatorMetric = new MetricSeries(aggregationManager, new MetricIdentifier("Animal Metrics", "Cows Sold"), null, accumulatorConfig);

            var accumulatorAggregator = new MetricSeriesConfigurationForTestingAccumulatorBehavior.Aggregator(
                (MetricSeriesConfigurationForTestingAccumulatorBehavior)accumulatorMetric.GetConfiguration(),
                accumulatorMetric,
                CycleKind.Custom);

            CommonSimpleDataSeriesAggregatorTests.CompleteAggregation_NonpersistentAggregator(measurementAggregator);
            CommonSimpleDataSeriesAggregatorTests.CompleteAggregation_PersistentAggregator(accumulatorAggregator);
        }
Esempio n. 12
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 /// <summary>@ToDo: Complete documentation before stable release. {928}</summary>
 /// <param name="seriesCountLimit">@ToDo: Complete documentation before stable release. {466}</param>
 /// <param name="valuesPerDimensionLimit">@ToDo: Complete documentation before stable release. {730}</param>
 /// <param name="seriesConfig">@ToDo: Complete documentation before stable release. {977}</param>
 public MetricConfigurationForMeasurement(int seriesCountLimit, int valuesPerDimensionLimit, MetricSeriesConfigurationForMeasurement seriesConfig)
     : base(seriesCountLimit, valuesPerDimensionLimit, seriesConfig)
 {
 }
Esempio n. 13
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 /// <summary>Creates a new instance of <c>MetricConfiguration</c>.</summary>
 /// <param name="seriesCountLimit">How many data time series a metric can contain as a maximum.
 /// Once this limit is reached, calls to <c>TrackValue(..)</c>, <c>TryGetDataSeries(..)</c> and similar
 /// that would normally result in new series will return <c>false</c>.</param>
 /// <param name="valuesPerDimensionLimits">How many different values each of the dimensions of a metric can
 /// have as a maximum. If this enumeration contains less elements than the number of supported dimensions,
 /// then the last specified element is replicated for subsequent dimensions. If this enumeration contains
 /// too many elements, superfluous elements are ignored.
 /// Once this limit is reached, calls to <c>TrackValue(..)</c>, <c>TryGetDataSeries(..)</c> and similar
 /// that would normally result in new series will return <c>false</c>.</param>
 /// <param name="seriesConfig">The configuration for how each series of this metric should be aggregated.</param>
 public MetricConfigurationForMeasurement(int seriesCountLimit, IEnumerable <int> valuesPerDimensionLimits, MetricSeriesConfigurationForMeasurement seriesConfig)
     : base(seriesCountLimit, valuesPerDimensionLimits, seriesConfig)
 {
 }
        public void GetCurrentAggregateUnsafe_MetricAggregationCycleKind_DateTimeOffset_Measurement()
        {
            IMetricSeriesConfiguration seriesConfig = new MetricSeriesConfigurationForMeasurement(restrictToUInt32Values: false);
            const string aggregationKindMoniker     = "Microsoft.Azure.Measurement";

            // Do not start this test in the last 10 secs or first 2 secs of a minute, to make sure the timings below are likely to work out.

            while (DateTimeOffset.Now.Second >= 49 || DateTimeOffset.Now.Second < 3)
            {
                Thread.Sleep(TimeSpan.FromMilliseconds(500));
            }

            DateTimeOffset startTS = DateTimeOffset.Now;

            var          aggregateCollector = new MemoryMetricTelemetryPipeline();
            var          manager            = new MetricManager(aggregateCollector);
            MetricSeries series             = manager.CreateNewSeries("ns", "Foo Bar", seriesConfig);

            DateTimeOffset stepTS        = startTS.AddMinutes(2);
            DateTimeOffset stepTSRounded = new DateTimeOffset(stepTS.Year, stepTS.Month, stepTS.Day, stepTS.Hour, stepTS.Minute, stepTS.Second, 0, stepTS.Offset);

            {
                MetricAggregate aggregate = series.GetCurrentAggregateUnsafe(MetricAggregationCycleKind.Default, stepTS);
                Assert.IsNull(aggregate);

                aggregate = series.GetCurrentAggregateUnsafe(MetricAggregationCycleKind.Custom, stepTS);
                Assert.IsNull(aggregate);

                aggregate = series.GetCurrentAggregateUnsafe(MetricAggregationCycleKind.QuickPulse, stepTS);
                Assert.IsNull(aggregate);
            }

            series.TrackValue(0.4);
            series.TrackValue(2);
            series.TrackValue(-2);

            stepTS        = stepTS.AddMinutes(2);
            stepTSRounded = new DateTimeOffset(stepTS.Year, stepTS.Month, stepTS.Day, stepTS.Hour, stepTS.Minute, stepTS.Second, 0, stepTS.Offset);


            {
                MetricAggregate aggregate = series.GetCurrentAggregateUnsafe(MetricAggregationCycleKind.Default, stepTS);

                TestUtil.ValidateNumericAggregateValues(aggregate, ns: "ns", name: "Foo Bar", count: 3, sum: 0.4, max: 2, min: -2, stdDev: 1.64384373412506, aggKindMoniker: aggregationKindMoniker);

                // This might break: Second boundary might be crossed between snapping test and the aggregation timestamps. Try re-running.
                Assert.AreEqual(
                    new DateTimeOffset(startTS.Year, startTS.Month, startTS.Day, startTS.Hour, startTS.Minute, startTS.Second, 0, startTS.Offset),
                    aggregate.AggregationPeriodStart);

                Assert.AreEqual(
                    (stepTSRounded - aggregate.AggregationPeriodStart).TotalMilliseconds,
                    aggregate.AggregationPeriodDuration.TotalMilliseconds);

                {
                    Assert.IsFalse(seriesConfig.RequiresPersistentAggregation);

                    aggregate = series.GetCurrentAggregateUnsafe(MetricAggregationCycleKind.Custom, stepTS);
                    Assert.IsNull(aggregate);

                    aggregate = series.GetCurrentAggregateUnsafe(MetricAggregationCycleKind.QuickPulse, stepTS);
                    Assert.IsNull(aggregate);
                }
            }

            DateTimeOffset customCycleStartTS = stepTS.AddMinutes(1);

            manager.StartOrCycleAggregators(MetricAggregationCycleKind.Custom, customCycleStartTS, futureFilter: null);

            series.TrackValue(0.17);
            series.TrackValue(0.32);
            series.TrackValue(-0.15);
            series.TrackValue(1.07);

            stepTS        = stepTS.AddMinutes(2);
            stepTSRounded = new DateTimeOffset(stepTS.Year, stepTS.Month, stepTS.Day, stepTS.Hour, stepTS.Minute, stepTS.Second, 0, stepTS.Offset);

            {
                MetricAggregate aggregate = series.GetCurrentAggregateUnsafe(MetricAggregationCycleKind.Default, stepTS);

                TestUtil.ValidateNumericAggregateValues(aggregate, ns: "ns", name: "Foo Bar", count: 7, sum: 1.81, max: 2, min: -2, stdDev: 1.13330652229191, aggKindMoniker: aggregationKindMoniker);

                // This might break: Second boundary might be crossed between snapping test and the aggregation timestamps. Try re-running.

                Assert.AreEqual(
                    new DateTimeOffset(startTS.Year, startTS.Month, startTS.Day, startTS.Hour, startTS.Minute, startTS.Second, 0, startTS.Offset),
                    aggregate.AggregationPeriodStart);

                Assert.AreEqual(
                    (stepTSRounded - aggregate.AggregationPeriodStart).TotalMilliseconds,
                    aggregate.AggregationPeriodDuration.TotalMilliseconds);


                aggregate = series.GetCurrentAggregateUnsafe(MetricAggregationCycleKind.Custom, stepTS);

                {
                    Assert.IsFalse(seriesConfig.RequiresPersistentAggregation);

                    TestUtil.ValidateNumericAggregateValues(aggregate, ns: "ns", name: "Foo Bar", count: 4, sum: 1.41, max: 1.07, min: -0.15, stdDev: 0.447681527427702, aggKindMoniker: aggregationKindMoniker);

                    // This might break: Second boundary might be crossed between snapping test and the aggregation timestamps. Try re-running.

                    Assert.AreEqual(
                        new DateTimeOffset(customCycleStartTS.Year, customCycleStartTS.Month, customCycleStartTS.Day, customCycleStartTS.Hour, customCycleStartTS.Minute, customCycleStartTS.Second, 0, customCycleStartTS.Offset),
                        aggregate.AggregationPeriodStart);

                    Assert.AreEqual(
                        (stepTSRounded - aggregate.AggregationPeriodStart).TotalMilliseconds,
                        aggregate.AggregationPeriodDuration.TotalMilliseconds);
                }

                aggregate = series.GetCurrentAggregateUnsafe(MetricAggregationCycleKind.QuickPulse, stepTS);

                {
                    Assert.IsFalse(seriesConfig.RequiresPersistentAggregation);
                    Assert.IsNull(aggregate);
                }
            }

            Thread.Sleep(1500);
            DateTimeOffset flushTS = DateTimeOffset.Now;

            manager.Flush();


            DateTimeOffset quickPulseCycleStartTS = stepTS.AddMinutes(1);

            manager.StartOrCycleAggregators(MetricAggregationCycleKind.QuickPulse, quickPulseCycleStartTS, futureFilter: null);

            stepTS        = stepTS.AddMinutes(2);
            stepTSRounded = new DateTimeOffset(stepTS.Year, stepTS.Month, stepTS.Day, stepTS.Hour, stepTS.Minute, stepTS.Second, 0, stepTS.Offset);

            {
                MetricAggregate aggregate = series.GetCurrentAggregateUnsafe(MetricAggregationCycleKind.Default, stepTS);

                {
                    Assert.IsFalse(seriesConfig.RequiresPersistentAggregation);
                    Assert.IsNull(aggregate);
                }


                aggregate = series.GetCurrentAggregateUnsafe(MetricAggregationCycleKind.Custom, stepTS);

                {
                    Assert.IsFalse(seriesConfig.RequiresPersistentAggregation);

                    // Custom was not cycled by Flush.
                    TestUtil.ValidateNumericAggregateValues(aggregate, ns: "ns", name: "Foo Bar", count: 4, sum: 1.41, max: 1.07, min: -0.15, stdDev: 0.447681527427702, aggKindMoniker: aggregationKindMoniker);

                    // This might break: Second boundary might be crossed between snapping test and the aggregation timestamps. Try re-running.
                    Assert.AreEqual(
                        new DateTimeOffset(customCycleStartTS.Year, customCycleStartTS.Month, customCycleStartTS.Day, customCycleStartTS.Hour, customCycleStartTS.Minute, customCycleStartTS.Second, 0, customCycleStartTS.Offset),
                        aggregate.AggregationPeriodStart);

                    Assert.AreEqual(
                        (stepTSRounded - aggregate.AggregationPeriodStart).TotalMilliseconds,
                        aggregate.AggregationPeriodDuration.TotalMilliseconds);

                    manager.StartOrCycleAggregators(MetricAggregationCycleKind.Custom, flushTS, null);

                    aggregate = series.GetCurrentAggregateUnsafe(MetricAggregationCycleKind.Custom, stepTS);
                    Assert.IsNull(aggregate);
                }


                aggregate = series.GetCurrentAggregateUnsafe(MetricAggregationCycleKind.QuickPulse, stepTS);

                {
                    Assert.IsFalse(seriesConfig.RequiresPersistentAggregation);

                    // We started QP cycle now, but we did not write values since then.
                    Assert.IsNull(aggregate);
                }
            }

            series.TrackValue(0);

            stepTS        = stepTS.AddMinutes(2);
            stepTSRounded = new DateTimeOffset(stepTS.Year, stepTS.Month, stepTS.Day, stepTS.Hour, stepTS.Minute, stepTS.Second, 0, stepTS.Offset);

            manager.StopAggregators(MetricAggregationCycleKind.Custom, stepTS);

            {
                MetricAggregate aggregate = series.GetCurrentAggregateUnsafe(MetricAggregationCycleKind.Default, stepTS);

                {
                    Assert.IsFalse(seriesConfig.RequiresPersistentAggregation);

                    TestUtil.ValidateNumericAggregateValues(aggregate, ns: "ns", name: "Foo Bar", count: 1, sum: 0, max: 0, min: 0, stdDev: 0, aggKindMoniker: aggregationKindMoniker);

                    // This might break: Second boundary might be crossed between snapping test and the aggregation timestamps. Try re-running.
                    Assert.AreEqual(
                        new DateTimeOffset(flushTS.Year, flushTS.Month, flushTS.Day, flushTS.Hour, flushTS.Minute, flushTS.Second, 0, flushTS.Offset),
                        aggregate.AggregationPeriodStart);

                    Assert.AreEqual(
                        (stepTSRounded - aggregate.AggregationPeriodStart).TotalMilliseconds,
                        aggregate.AggregationPeriodDuration.TotalMilliseconds);
                }


                aggregate = series.GetCurrentAggregateUnsafe(MetricAggregationCycleKind.Custom, stepTS);

                {
                    Assert.IsFalse(seriesConfig.RequiresPersistentAggregation);

                    Assert.IsNull(aggregate);
                }


                aggregate = series.GetCurrentAggregateUnsafe(MetricAggregationCycleKind.QuickPulse, stepTS);

                {
                    Assert.IsFalse(seriesConfig.RequiresPersistentAggregation);

                    TestUtil.ValidateNumericAggregateValues(aggregate, ns: "ns", name: "Foo Bar", count: 1, sum: 0, max: 0, min: 0, stdDev: 0, aggKindMoniker: aggregationKindMoniker);

                    // This might break: Second boundary might be crossed between snapping test and the aggregation timestamps. Try re-running.
                    Assert.AreEqual(
                        new DateTimeOffset(quickPulseCycleStartTS.Year, quickPulseCycleStartTS.Month, quickPulseCycleStartTS.Day, quickPulseCycleStartTS.Hour, quickPulseCycleStartTS.Minute, quickPulseCycleStartTS.Second, 0, quickPulseCycleStartTS.Offset),
                        aggregate.AggregationPeriodStart);

                    Assert.AreEqual(
                        (stepTSRounded - aggregate.AggregationPeriodStart).TotalMilliseconds,
                        aggregate.AggregationPeriodDuration.TotalMilliseconds);
                }
            }

            TestUtil.CompleteDefaultAggregationCycle(manager);
        }
        public void GetCurrentAggregateUnsafe_Measurement()
        {
            IMetricSeriesConfiguration seriesConfig = new MetricSeriesConfigurationForMeasurement(restrictToUInt32Values: false);
            const string aggregationKindMoniker     = "Microsoft.Azure.Measurement";

            // Do not start this test in the last 10 secs or first 2 secs of a minute, to make sure the timings below are likely to work out.

            while (DateTimeOffset.Now.Second >= 49 || DateTimeOffset.Now.Second < 3)
            {
                Thread.Sleep(TimeSpan.FromMilliseconds(500));
            }

            DateTimeOffset startTS = DateTimeOffset.Now;

            var          aggregateCollector = new MemoryMetricTelemetryPipeline();
            var          manager            = new MetricManager(aggregateCollector);
            MetricSeries series             = manager.CreateNewSeries("NS", "Foo Bar", seriesConfig);

            {
                MetricAggregate aggregate = series.GetCurrentAggregateUnsafe();
                Assert.IsNull(aggregate);
            }

            series.TrackValue(0.4);
            series.TrackValue(2);
            series.TrackValue(-2);

            {
                MetricAggregate aggregate = series.GetCurrentAggregateUnsafe();
                TestUtil.ValidateNumericAggregateValues(aggregate, ns: "NS", name: "Foo Bar", count: 3, sum: 0.4, max: 2, min: -2, stdDev: 1.64384373412506, aggKindMoniker: aggregationKindMoniker);

                // The following might break sometimes!
                // There is a little chance that second boundary is crossed between test TS and the aggregation timestamps are snapped.
                // rerun the test if it happens.

                Assert.AreEqual(
                    new DateTimeOffset(startTS.Year, startTS.Month, startTS.Day, startTS.Hour, startTS.Minute, startTS.Second, 0, startTS.Offset),
                    aggregate.AggregationPeriodStart);
            }

            series.TrackValue(0.17);
            series.TrackValue(0.32);
            series.TrackValue(-0.15);
            series.TrackValue(1.07);

            {
                MetricAggregate aggregate = series.GetCurrentAggregateUnsafe();

                TestUtil.ValidateNumericAggregateValues(aggregate, ns: "NS", name: "Foo Bar", count: 7, sum: 1.81, max: 2, min: -2, stdDev: 1.13330652229191, aggKindMoniker: aggregationKindMoniker);

                // The following might break sometimes!
                // There is a little chance that second boundary is crossed between test TS and the aggregation timestamps are snapped.
                // rerun the test if it happens.

                Assert.AreEqual(
                    new DateTimeOffset(startTS.Year, startTS.Month, startTS.Day, startTS.Hour, startTS.Minute, startTS.Second, 0, startTS.Offset),
                    aggregate.AggregationPeriodStart);
            }

            Thread.Sleep(1500);
            DateTimeOffset flushTS = DateTimeOffset.Now;

            manager.Flush();

            {
                Assert.IsFalse(seriesConfig.RequiresPersistentAggregation);
                MetricAggregate aggregate = series.GetCurrentAggregateUnsafe();
                Assert.IsNull(aggregate);
            }

            series.TrackValue(0);

            {
                MetricAggregate aggregate = series.GetCurrentAggregateUnsafe();

                Assert.IsFalse(seriesConfig.RequiresPersistentAggregation);
                TestUtil.ValidateNumericAggregateValues(aggregate, ns: "NS", name: "Foo Bar", count: 1, sum: 0, max: 0, min: 0, stdDev: 0, aggKindMoniker: aggregationKindMoniker);

                // The following might break sometimes!
                // There is a little chance that second boundary is crossed between test TS and the aggregation timestamps are snapped.
                // rerun the test if it happens.

                Assert.AreEqual(
                    new DateTimeOffset(flushTS.Year, flushTS.Month, flushTS.Day, flushTS.Hour, flushTS.Minute, flushTS.Second, 0, flushTS.Offset),
                    aggregate.AggregationPeriodStart);
            }

            TestUtil.CompleteDefaultAggregationCycle(manager);
        }