public void GetReadings_EnumeratesAllTaggedMetrics()
{
var source = new TestMetricSource();
var counter = source.AddCounter("counter", "unit", "desc", new MetricTag <string>("tag"));
counter.Increment("test");
counter.Increment("test_2");
counter.Increment("test_2");
counter.Increment("test_3");
counter.Increment("test_3");
counter.Increment("test_3");
// HACK: need to order by the reported value to ensure we get consistent order
var readings = source.GetReadings(DateTime.UtcNow).OrderBy(x => x.Value);
Assert.Collection(
readings,
reading =>
{
Assert.Equal("counter", reading.Name);
Assert.Equal(1, reading.Value);
Assert.True(reading.Tags.TryGetValue("tag", out var value) && value == "test");
},
reading =>
{
Assert.Equal("counter", reading.Name);
Assert.Equal(2, reading.Value);
Assert.True(reading.Tags.TryGetValue("tag", out var value) && value == "test_2");
},
reading =>
{
Assert.Equal("counter", reading.Name);
Assert.Equal(3, reading.Value);
Assert.True(reading.Tags.TryGetValue("tag", out var value) && value == "test_3");
});
}
public async Task MetricSourcesAreAttachedAndDetached()
{
var metricSource = new TestMetricSource();
var collector = new MetricsCollector(
new MetricsCollectorOptions
{
Endpoints = new []
{
new MetricEndpoint("Local", new LocalMetricHandler()),
},
Sources = new[] { metricSource },
RetryInterval = TimeSpan.Zero,
SnapshotInterval = TimeSpan.FromMilliseconds(20),
}
);
collector.Start();
try
{
// make sure initialization happened
await Task.WhenAny(metricSource.AttachTask, Task.Delay(1000));
Assert.True(metricSource.AttachTask.IsCompleted, "Metric source was not attached");
// make sure we got snapshotted
await Task.WhenAny(metricSource.SnapshotTask, Task.Delay(30000));
Assert.True(metricSource.SnapshotTask.IsCompleted, "Metric source was not snapshotted");
}
finally
{
collector.Stop();
// make sure we got detached
await Task.WhenAny(metricSource.DetachTask, Task.Delay(1000));
Assert.True(metricSource.DetachTask.IsCompleted, "Metric source was not detached");
}
}
public void GetReadings_EnumeratesAllUntaggedMetrics()
{
var source = new TestMetricSource();
var counter = source.AddCounter("counter", "unit", "desc");
var gauge = source.AddSamplingGauge("gauge", "unit", "desc");
counter.Increment();
counter.Increment();
gauge.Record(42.123d);
var readings = source.GetReadings(DateTime.UtcNow);
Assert.Collection(
readings,
reading =>
{
Assert.Equal("counter", reading.Name);
Assert.Equal(2, reading.Value);
},
reading =>
{
Assert.Equal("gauge", reading.Name);
Assert.Equal(42.123d, reading.Value);
});
}
public void StopWithoutStart_Throws()
{
var source = new TestMetricSource();
var handler = new TestMetricHandler((handler, type, buffer) => default);
