Examples of com.sleepycat.je.utilint.StatGroup

com.sleepycat.je.utilint.StatGroup
The Stats infrastructure provides context for JE statistics. Each statistic has these attributes: - metadata - specifically, a name and description - each statistic is associated with a parent stat group, which itself has a name and description. - support for the StatsConfig.clear semantics - a way to print statistics in a user friendly way. To create a statistic variable, instantiate one of the concrete subclasses of Stat. Each concrete subclass should hold the methods that are needed to best set and display the value. For example, instead of using LongStat to hold a timestamp or LSN value, use TimestampStat or LSNStat. A Stat instance needs to specify a StatDefinition. There may be multiple Stat variables in different components that share a StatDefinition. They are differentiated when displayed by their parent StatGroup. Each Stat instance is associated with a StatGroup, which holds the collection of stats that belong to a given component. Each member of the StatGroup has a unique StatDefinition. StatGroups can be combined, in order to accumulate values. For example, the LockManager may have multiple lock tables. Each lock table keeps its own latch statistics. When LockStats are generated, the StatsGroup for each latch is collected and rolled up into a single StatGroup, using the addAll(StatGroup) method. The Stats infrastructure is for internal use only. Public API classes like EnvironmentStats, LockStats, etc, contain StatGroups. A call to retrieve stats is implementing by getting a clone of the StatGroups held by the components like the cleaner, the incompressor, the LockManager, etc. The public API classes provide getter methods that reach into the StatGroups to return the specific stat value. To add a statistic, create the Stat variable in the component where it is being used and associate it with a StatGroup. The Stat infrastruture does the rest of the work for plumbing that statistic up to the public API class. Each API class must provide a getter method to access the specific statistic. Currenly, this is done manually.


        consistencyTracker = new ConsistencyTracker();
        this.replay = replay;
        logger = LoggerUtils.getLogger(getClass());
        aggProtoStats =
            new StatGroup(BinaryProtocolStatDefinition.GROUP_NAME,
                          BinaryProtocolStatDefinition.GROUP_DESC);
        testDelayMs =
            repNode.getConfigManager().getInt(RepParams.TEST_REPLICA_DELAY);
    }

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        return replay.getStats(config);
    }


    /* Get the protocl statistics for this replica. */
    public StatGroup getProtocolStats(StatsConfig config) {
        StatGroup protoStats = aggProtoStats.cloneGroup(config.getClear());


        /* Guard against concurrent modification. */
        Protocol prot = this.protocol;
        if (prot != null) {
            /* These statistics are not ye a part of the agg statistics. */
            protoStats.addAll(prot.getStats(config));
        }


        return protoStats;
    }

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         * initialize the logger early so it can be used by the following
         * methods.
         */
        logger = LoggerUtils.getLogger(getClass());


        statistics = new StatGroup(VLSNIndexStatDefinition.GROUP_NAME,
                                   VLSNIndexStatDefinition.GROUP_DESC);
        nHeadBucketsDeleted =
            new LongStat(statistics,
                         VLSNIndexStatDefinition.N_HEAD_BUCKETS_DELETED);
        nTailBucketsDeleted =

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        private StatGroup getStats(StatsConfig config) {
            if (config.getClear()) {
                stats.clear();
            }
            StatGroup ret = stats.cloneGroup(false);


            return ret;
        }

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    /**
     * All stats from the INList are instantaneous -- never need to be cleared.
     */
    public StatGroup loadStats() {
        StatGroup stats = new StatGroup(EvictorStatDefinition.GROUP_NAME,
                              EvictorStatDefinition.GROUP_DESC);


        long bstat = nCachedBINs.get();
        long istat = nCachedUpperINs.get();
        new LongStat(stats, EvictorStatDefinition.CACHED_UPPER_INS,

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        reset(configManager);


        /* Current buffer is the active buffer that writes go into. */
        currentWriteBuffer = bufferPool.getFirst();


        stats = new StatGroup(LogStatDefinition.LBF_GROUP_NAME,
                              LogStatDefinition.LBF_GROUP_DESC);
        nNotResident = new AtomicLongStat(stats, LBFP_NOT_RESIDENT);
        nCacheMiss = new AtomicLongStat(stats, LBFP_MISS);
        logBuffers = new IntStat(stats, LBFP_LOG_BUFFERS);
        nBufferBytes = new LongStat(stats, LBFP_BUFFER_BYTES);

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    /**
     * @hidden
     * Internal use only.
     */
    public EnvironmentStats() {
        incompStats = new StatGroup(INCompStatDefinition.GROUP_NAME,
                                    INCompStatDefinition.GROUP_DESC);


        /*
         * Memory budget stats are displayed with evictor stats, as a single
         * cache category.
         */
        cacheStats = new StatGroup(EvictorStatDefinition.GROUP_NAME,
                                   EvictorStatDefinition.GROUP_DESC);
        ckptStats = new StatGroup(CheckpointStatDefinition.GROUP_NAME,
                                  CheckpointStatDefinition.GROUP_DESC);
        cleanerStats = new StatGroup(CleanerStatDefinition.GROUP_NAME,
                                     CleanerStatDefinition.GROUP_DESC);
        logStats = new StatGroup(LogStatDefinition.GROUP_NAME,
                                 LogStatDefinition.GROUP_DESC);
        lockStats = new StatGroup(LockStatDefinition.GROUP_NAME,
                                  LockStatDefinition.GROUP_DESC);
        envImplStats = new StatGroup(DbiStatDefinition.ENV_GROUP_NAME,
                                     DbiStatDefinition.ENV_GROUP_DESC);
    }

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                getDuration(RepParams.TRANSFER_LOGGING_THRESHOLD);
            if (feederManager != null) {
                nMaxReplicaLag = feederManager.getnMaxReplicaLag();
            } else {
                /* Create a placeholder stat for testing. */
                StatGroup stats =
                    new StatGroup(FeederManagerStatDefinition.GROUP_NAME,
                                  FeederManagerStatDefinition.GROUP_DESC);
                nMaxReplicaLag = new LongMaxZeroStat(stats, N_MAX_REPLICA_LAG);
            }
        }

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    public static final String FEEDER_SERVICE = "Feeder";


    FeederManager(RepNode repNode) {
        this.repNode = repNode;
        logger = LoggerUtils.getLogger(getClass());
        stats = new StatGroup(FeederManagerStatDefinition.GROUP_NAME,
                              FeederManagerStatDefinition.GROUP_DESC);
        nFeedersCreated = new IntRunningTotalStat(stats, N_FEEDERS_CREATED);
        nFeedersShutdown = new IntRunningTotalStat(stats, N_FEEDERS_SHUTDOWN);
        nMaxReplicaLag = new LongMaxZeroStat(stats, N_MAX_REPLICA_LAG);
    }

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     *
     * @return the statistics
     */
    public StatGroup getFeederManagerStats(StatsConfig config) {


        StatGroup cloneStats = stats.cloneGroup(config.getClear());


        return cloneStats;
    }

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Related Classes of com.sleepycat.je.utilint.StatGroup

com.sleepycat.je.BtreeStats

com.sleepycat.je.cleaner.Cleaner

com.sleepycat.je.cleaner.FileSelector

com.sleepycat.je.dbi.DatabaseImpl$StatsAccumulator

com.sleepycat.je.dbi.EnvironmentImpl

com.sleepycat.je.dbi.INList

com.sleepycat.je.dbi.MemoryBudget

com.sleepycat.je.EnvironmentStats

com.sleepycat.je.evictor.Arbiter

com.sleepycat.je.evictor.Evictor

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