Class ThreadExports

java.lang.Object
io.prometheus.client.Collector
io.prometheus.client.hotspot.ThreadExports
public class ThreadExports extends Collector
Exports metrics about JVM thread areas.

Example usage: 


  new ThreadExports().register();
Example metrics being exported: 
  jvm_threads_current{} 300
  jvm_threads_daemon{} 200
  jvm_threads_peak{} 410
  jvm_threads_started_total{} 1200

  • Field Details

  • Constructor Details

    • ThreadExports

      public ThreadExports()

    • ThreadExports

      public ThreadExports(ThreadMXBean threadBean)

  • Method Details

    • collect

      public List<Collector.MetricFamilySamples> collect()
      Description copied from class: Collector
      Return all metrics of this Collector.
      Specified by:
      collect in class Collector

    • collect

      public List<Collector.MetricFamilySamples> collect(Predicate<String> nameFilter)
      Description copied from class: Collector
      Like Collector.collect(), but the result should only contain MetricFamilySamples where sampleNameFilter.test(name) is true for at least one Sample name.

      The default implementation first collects all MetricFamilySamples and then discards the ones where sampleNameFilter.test(name) returns false for all names in Collector.MetricFamilySamples.getNames(). To improve performance, collector implementations should override this method to prevent MetricFamilySamples from being collected if they will be discarded anyways. See ThreadExports for an example.

      Note that the resulting List may contain MetricFamilySamples where some Sample names return true for sampleNameFilter.test(name) but some Sample names return false. This is ok, because before we produce the output format we will call Collector.MetricFamilySamples.filter(Predicate) to strip all Samples where sampleNameFilter.test(name) returns false.

      Overrides:
      collect in class Collector
      Parameters:
      nameFilter - may be null, indicating that all metrics should be collected.