Package org.apache.bookkeeper.stats

Class CachingStatsProvider

  • All Implemented Interfaces:
    StatsProvider
    public class CachingStatsProvider
extends java.lang.Object
implements StatsProvider
    A CachingStatsProvider adds the caching functionality to an existing StatsProvider.

    The stats provider will cache the stats objects created by the other StatsProvider to allow the reusability of stats objects and avoid creating a lot of stats objects.

    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      StatsLogger getStatsLogger​(java.lang.String scope)
      Return the stats logger to a given scope.
      java.lang.String getStatsName​(java.lang.String... statsComponents)
      Return the fully qualified stats name comprised of given statsComponents.
      void start​(org.apache.commons.configuration2.Configuration conf)
      Initialize the stats provider by loading the given configuration conf.
      void stop()
      Close the stats provider.

      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

    • Field Detail

      • statsLoggers

        protected final java.util.concurrent.ConcurrentMap<java.lang.String,​StatsLogger> statsLoggers

    • Constructor Detail

      • CachingStatsProvider

        public CachingStatsProvider​(StatsProvider provider)

    • Method Detail

      • start

        public void start​(org.apache.commons.configuration2.Configuration conf)
        Description copied from interface: StatsProvider
        Initialize the stats provider by loading the given configuration conf.
        Specified by:
        start in interface StatsProvider
        Parameters:
        conf - Configuration to configure the stats provider.

      • stop

        public void stop()
        Description copied from interface: StatsProvider
        Close the stats provider.
        Specified by:
        stop in interface StatsProvider

      • getStatsLogger

        public StatsLogger getStatsLogger​(java.lang.String scope)
        Description copied from interface: StatsProvider
        Return the stats logger to a given scope.
        Specified by:
        getStatsLogger in interface StatsProvider
        Parameters:
        scope - Scope for the given stats
        Returns:
        stats logger for the given scope

      • getStatsName

        public java.lang.String getStatsName​(java.lang.String... statsComponents)
        Description copied from interface: StatsProvider
        Return the fully qualified stats name comprised of given statsComponents.
        Specified by:
        getStatsName in interface StatsProvider
        Parameters:
        statsComponents - stats components to comprise the fully qualified stats name
        Returns:
        the fully qualified stats name