Package org.eclipse.microprofile.fault.tolerance.tck.telemetryMetrics.util

Class TelemetryHistogramMetric

java.lang.Object
org.eclipse.microprofile.fault.tolerance.tck.telemetryMetrics.util.TelemetryHistogramMetric
public class TelemetryHistogramMetric extends Object
Allows tests to get the value of a Histogram, it does not support comparing with a baseline

Most tests should use TelemetryMetricGetter to create instances of this class.

  • Field Details

    • EXPECTED_BOUNDARIES

      public static final List<Double> EXPECTED_BOUNDARIES

  • Constructor Details

    • TelemetryHistogramMetric

      public TelemetryHistogramMetric(TelemetryMetricID metricId)

  • Method Details

    • getHistogramPoint

      public Optional<io.opentelemetry.sdk.metrics.data.HistogramPointData> getHistogramPoint()

    • getHistogramCount

      public Optional<Long> getHistogramCount()

    • isPresent

      public boolean isPresent()

    • assertBoundaries

      public void assertBoundaries()

    • assertBucketCounts

      public void assertBucketCounts(long... expectedResultsMillis)
      Assert that the bucket counts of the histogram are consistent with the expected set of recorded results.

      The results are adjusted using TCKConfig.getTimeoutInMillis(long).

      A 20% deviation from the expected time is permitted and the upper limit is extended to 200ms. E.g.:

      • An expected time of 1000ms will allow a time recorded between 800ms and 1200ms
      • An expected time of 0ms will allow a time recorded between 0ms and 200ms
      Parameters:
      expectedResultsMillis - the list of values which the histogram is expected to have recorded

    • findBucket

      public static int findBucket(List<Double> boundaries, double value)
      Given a list of bucket boundaries, find the bucket that the given value falls into
      Parameters:
      boundaries - the list of boundaries
      value - the value to test
      Returns:
      the bucket index that should contain value