public void MergeStatsEngine_Mix()
{
var metric5 = MetricWireModel.BuildMetric(_metricNameService, "DotNet/name", null, MetricDataWireModel.BuildTimingData(TimeSpan.FromSeconds(4), TimeSpan.FromSeconds(4)));
var metric6 = MetricWireModel.BuildMetric(_metricNameService, "DotNet/another", null, MetricDataWireModel.BuildTimingData(TimeSpan.FromSeconds(8), TimeSpan.FromSeconds(6)));
var engine1 = new MetricStatsCollection();
MetricStatsDictionary <string, MetricDataWireModel> scoped1 = new MetricStatsDictionary <string, MetricDataWireModel>();
scoped1.Merge("DotNet/name1", MetricDataWireModel.BuildTimingData(TimeSpan.FromSeconds(2), TimeSpan.FromSeconds(1)), MetricDataWireModel.BuildAggregateData);
scoped1.Merge("DotNet/name2", MetricDataWireModel.BuildTimingData(TimeSpan.FromSeconds(3), TimeSpan.FromSeconds(2)), MetricDataWireModel.BuildAggregateData);
engine1.MergeUnscopedStats(metric5);
engine1.MergeScopedStats("engine1scope", scoped1);
var engine2 = new MetricStatsCollection();
MetricStatsDictionary <string, MetricDataWireModel> scoped2 = new MetricStatsDictionary <string, MetricDataWireModel>();
scoped2.Merge("DotNet/name3", MetricDataWireModel.BuildTimingData(TimeSpan.FromSeconds(4), TimeSpan.FromSeconds(1)), MetricDataWireModel.BuildAggregateData);
scoped2.Merge("DotNet/name4", MetricDataWireModel.BuildTimingData(TimeSpan.FromSeconds(5), TimeSpan.FromSeconds(2)), MetricDataWireModel.BuildAggregateData);
engine1.MergeUnscopedStats(metric6);
engine1.MergeScopedStats("engine2scope", scoped1);
var engine3 = new MetricStatsCollection();
engine3.Merge(engine1);
engine3.Merge(engine2);
IEnumerable <MetricWireModel> stats = engine3.ConvertToJsonForSending(_metricNameService);
var count = 0;
foreach (MetricWireModel current in stats)
{
count++;
}
Assert.AreEqual(6, count);
}
public void MergeScopedStats_TwoStatsSeparateEngines()
{
var metric1 = MetricWireModel.BuildMetric(_metricNameService, "name", "scope", MetricDataWireModel.BuildTimingData(TimeSpan.FromSeconds(3), TimeSpan.FromSeconds(2)));
var engine = new MetricStatsCollection();
MetricStatsDictionary <string, MetricDataWireModel> txStats1 = new MetricStatsDictionary <string, MetricDataWireModel>();
txStats1.Merge(metric1.MetricName.Name, metric1.Data, MetricDataWireModel.BuildAggregateData);
MetricStatsDictionary <string, MetricDataWireModel> txStats2 = new MetricStatsDictionary <string, MetricDataWireModel>();
txStats2.Merge(metric1.MetricName.Name, metric1.Data, MetricDataWireModel.BuildAggregateData);
engine.MergeScopedStats(metric1.MetricName.Scope, txStats1);
engine.MergeScopedStats(metric1.MetricName.Scope, txStats2);
IEnumerable <MetricWireModel> stats = engine.ConvertToJsonForSending(_metricNameService);
var count = 0;
foreach (MetricWireModel current in stats)
{
count++;
Assert.AreEqual("name", current.MetricName.Name);
Assert.AreEqual("scope", current.MetricName.Scope);
Assert.AreEqual(2, current.Data.Value0);
Assert.AreEqual(6, current.Data.Value1);
Assert.AreEqual(4, current.Data.Value2);
}
Assert.AreEqual(1, count);
}
public void MergeUnscopeNotCreated_TwoDifferentSame()
{
var metric1 = MetricWireModel.BuildMetric(_metricNameService, "DotNet/name", null, MetricDataWireModel.BuildTimingData(TimeSpan.FromSeconds(5), TimeSpan.FromSeconds(4)));
var metric2 = MetricWireModel.BuildMetric(_metricNameService, "DotNet/another", null, MetricDataWireModel.BuildTimingData(TimeSpan.FromSeconds(3), TimeSpan.FromSeconds(2)));
var engine = new MetricStatsCollection();
engine.MergeUnscopedStats(metric1.MetricName.Name, metric1.Data);
engine.MergeUnscopedStats(metric2.MetricName.Name, metric2.Data);
IEnumerable <MetricWireModel> stats = engine.ConvertToJsonForSending(_metricNameService);
var count = 0;
foreach (MetricWireModel current in stats)
{
count++;
if (current.MetricName.Name.Equals("DotNet/name"))
{
Assert.AreEqual(1, current.Data.Value0);
Assert.AreEqual(5, current.Data.Value1);
Assert.AreEqual(4, current.Data.Value2);
}
else if (current.MetricName.Name.Equals("DotNet/another"))
{
Assert.AreEqual(1, current.Data.Value0);
Assert.AreEqual(3, current.Data.Value1);
Assert.AreEqual(2, current.Data.Value2);
}
else
{
Assert.Fail("Unexpected Metric: " + current.MetricName.Name);
}
Assert.AreEqual(null, current.MetricName.Scope);
}
Assert.AreEqual(2, count);
}
public void MergeScopedStats_VerifyRenaming()
{
IMetricNameService mNameService = Mock.Create <IMetricNameService>();
Mock.Arrange(() => mNameService.RenameMetric(Arg.IsAny <string>())).Returns <string>(name => "IAmRenamed");
var metric1 = MetricWireModel.BuildMetric(_metricNameService, "name", "myscope", MetricDataWireModel.BuildTimingData(TimeSpan.FromSeconds(3), TimeSpan.FromSeconds(2)));
var engine = new MetricStatsCollection();
var scopedStats = new MetricStatsDictionary <string, MetricDataWireModel>();
scopedStats[metric1.MetricName.Name] = metric1.Data;
engine.MergeScopedStats(metric1.MetricName.Scope, scopedStats);
IEnumerable <MetricWireModel> stats = engine.ConvertToJsonForSending(mNameService);
var count = 0;
foreach (MetricWireModel current in stats)
{
count++;
Assert.AreEqual("IAmRenamed", current.MetricName.Name);
Assert.AreEqual("myscope", current.MetricName.Scope);
Assert.AreEqual(1, current.Data.Value0);
Assert.AreEqual(3, current.Data.Value1);
Assert.AreEqual(2, current.Data.Value2);
}
Assert.AreEqual(1, count);
}
public void Merge(MetricStatsCollection engine)
{
_unscopedStats.Merge(engine._unscopedStats, _mergeFunction);
_preCreatedUnscopedStats.Merge(engine._preCreatedUnscopedStats, _mergeUnscopedFunction);
foreach (KeyValuePair <string, MetricStatsDictionary <string, MetricDataWireModel> > current in engine._scopedStats)
{
MergeScopedStats(current.Key, current.Value);
}
}
/// <summary>
/// Take a stats engine (metrics aggregate Dictionary) off the queue and merge metric into it, then put it back
/// on the queue. Create one if all the existing ones are "checked out" -- others can use it later.
///
/// We are one of (possibly) several readers of the stats engine queue under the readwrite lock, so harvest will
/// wait for us to finish before fetching/replacing the entire queue
/// </summary>
/// <param name="statsEngineQueue"></param>
/// <param name="metric"></param>
private void MergeMetricUnderLock(Queue <MetricStatsCollection> statsEngineQueue, IAllMetricStatsCollection metrics)
{
MetricStatsCollection statsEngineToMergeWith = null;
try
{
lock (_queueReadersLock)
{
if (statsEngineQueue.Count > 0)
{
statsEngineToMergeWith = statsEngineQueue.Dequeue();
}
}
// make a new stats engine if there aren't enough to go around right now
if (statsEngineToMergeWith == null)
{
statsEngineToMergeWith = CreateMetricStatsEngine();
Interlocked.Increment(ref _statsEngineCount);
}
metrics.AddMetricsToEngine(statsEngineToMergeWith);
}
catch (Exception e)
{
Log.Warn($"Exception dequeueing/creating stats engine: {e}");
}
finally
{
if (statsEngineToMergeWith != null)
{
try
{
lock (_queueReadersLock)
{
statsEngineQueue.Enqueue(statsEngineToMergeWith);
}
}
catch (Exception e)
{
// should never happen
Log.Warn($"Exception returning stats engine to queue: {e}");
}
}
}
}
private MetricStatsCollection GetStatsEngineForHarvest(Queue <MetricStatsCollection> statsEngines)
{
MetricStatsCollection harvestMetricsStatsEngine = CreateMetricStatsEngine();
int actualStatsEngineCount = 0;
foreach (MetricStatsCollection statsEngine in statsEngines)
{
harvestMetricsStatsEngine.Merge(statsEngine);
actualStatsEngineCount++;
}
if (actualStatsEngineCount != _statsEngineCount)
{
Log.Warn($"Error draining stats engine queue. Expected: {_statsEngineCount} actual: {actualStatsEngineCount}");
}
return(harvestMetricsStatsEngine);
}
public void MergeScopedStats_OneStat_StringData()
{
var metric1 = MetricWireModel.BuildMetric(_metricNameService, "DotNet/name", "myScope", MetricDataWireModel.BuildTimingData(TimeSpan.FromSeconds(3), TimeSpan.FromSeconds(2)));
var engine = new MetricStatsCollection();
engine.MergeScopedStats(metric1.MetricName.Scope, metric1.MetricName.Name, metric1.Data);
IEnumerable <MetricWireModel> stats = engine.ConvertToJsonForSending(_metricNameService);
var count = 0;
foreach (MetricWireModel current in stats)
{
count++;
Assert.AreEqual("DotNet/name", current.MetricName.Name);
Assert.AreEqual("myScope", current.MetricName.Scope);
Assert.AreEqual(1, current.Data.Value0);
Assert.AreEqual(3, current.Data.Value1);
Assert.AreEqual(2, current.Data.Value2);
}
Assert.AreEqual(1, count);
}
public void MergeScopedStats_TwoDifferentSame()
{
var metric1 = MetricWireModel.BuildMetric(_metricNameService, "DotNet/name", "scope", MetricDataWireModel.BuildTimingData(TimeSpan.FromSeconds(2), TimeSpan.FromSeconds(1)));
var metric2 = MetricWireModel.BuildMetric(_metricNameService, "DotNet/another", "scope", MetricDataWireModel.BuildTimingData(TimeSpan.FromSeconds(3), TimeSpan.FromSeconds(2)));
var engine = new MetricStatsCollection();
MetricStatsDictionary <string, MetricDataWireModel> txStats1 = new MetricStatsDictionary <string, MetricDataWireModel>();
txStats1.Merge(metric1.MetricName.Name, metric1.Data, MetricDataWireModel.BuildAggregateData);
MetricStatsDictionary <string, MetricDataWireModel> txStats2 = new MetricStatsDictionary <string, MetricDataWireModel>();
txStats2.Merge(metric2.MetricName.Name, metric2.Data, MetricDataWireModel.BuildAggregateData);
engine.MergeScopedStats(metric2.MetricName.Scope, txStats1);
engine.MergeScopedStats(metric2.MetricName.Scope, txStats2);
IEnumerable <MetricWireModel> stats = engine.ConvertToJsonForSending(_metricNameService);
var count = 0;
foreach (MetricWireModel current in stats)
{
count++;
if (current.MetricName.Name.Equals("DotNet/name"))
{
Assert.AreEqual(1, current.Data.Value0);
Assert.AreEqual(2, current.Data.Value1);
Assert.AreEqual(1, current.Data.Value2);
}
else if (current.MetricName.Name.Equals("DotNet/another"))
{
Assert.AreEqual(1, current.Data.Value0);
Assert.AreEqual(3, current.Data.Value1);
Assert.AreEqual(2, current.Data.Value2);
}
else
{
Assert.Fail("Unexpected metric: " + current.MetricName.Name);
}
Assert.AreEqual("scope", current.MetricName.Scope);
}
Assert.AreEqual(2, count);
}
public void MergeUnscopedNotCreated_TwoStatsSame()
{
var metric1 = MetricWireModel.BuildMetric(_metricNameService, "name", null, MetricDataWireModel.BuildTimingData(TimeSpan.FromSeconds(3), TimeSpan.FromSeconds(2)));
var engine = new MetricStatsCollection();
engine.MergeUnscopedStats(metric1.MetricName.Name, metric1.Data);
engine.MergeUnscopedStats(metric1.MetricName.Name, metric1.Data);
IEnumerable <MetricWireModel> stats = engine.ConvertToJsonForSending(_metricNameService);
var count = 0;
foreach (MetricWireModel current in stats)
{
count++;
Assert.AreEqual("name", current.MetricName.Name);
Assert.AreEqual(null, current.MetricName.Scope);
Assert.AreEqual(2, current.Data.Value0);
Assert.AreEqual(6, current.Data.Value1);
Assert.AreEqual(4, current.Data.Value2);
}
Assert.AreEqual(1, count);
var metric2 = MetricWireModel.BuildMetric(_metricNameService, "name", null, MetricDataWireModel.BuildTimingData(TimeSpan.FromSeconds(5), TimeSpan.FromSeconds(4)));
engine.MergeUnscopedStats(metric2.MetricName.Name, metric2.Data);
engine.MergeUnscopedStats(metric2.MetricName.Name, metric2.Data);
stats = engine.ConvertToJsonForSending(_metricNameService);
count = 0;
foreach (MetricWireModel current in stats)
{
count++;
Assert.AreEqual("name", current.MetricName.Name);
Assert.AreEqual(null, current.MetricName.Scope);
Assert.AreEqual(4, current.Data.Value0);
Assert.AreEqual(16, current.Data.Value1);
Assert.AreEqual(12, current.Data.Value2);
}
Assert.AreEqual(1, count);
}
public void AddMetricsToEngine(MetricStatsCollection engine)
{
Thread.Sleep(5);
txStats.AddMetricsToEngine(engine);
}
public void AddMetricsToEngine(MetricStatsCollection engine)
{
engine.MergeUnscopedStats(ConvertMetricNames(unscopedStats));
engine.MergeScopedStats(transactionName.PrefixedName, ConvertMetricNames(scopedStats));
}
