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.

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


            return ret;
        }

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        evictProfile = new EvictProfile();


        active = false;


        /* Do the stats definitions. */
        stats = new StatGroup(GROUP_NAME, GROUP_DESC);
        requiredEvictBytes = new LongStat(stats, EVICTOR_REQUIRED_EVICT_BYTES);
        nEvictPasses = new LongStat(stats, EVICTOR_EVICT_PASSES);
        nNodesSelected = new LongStat(stats, EVICTOR_NODES_SELECTED);
        nNodesScanned = new LongStat(stats, EVICTOR_NODES_SCANNED);
        nNodesEvicted = new LongStat(stats, EVICTOR_NODES_EVICTED);

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     * Load stats.
     */
    public StatGroup loadStats(StatsConfig config) {
        requiredEvictBytes.set(currentRequiredEvictBytes);


        StatGroup copy = stats.cloneGroup(config.getClear());
        copy.addAll(getINListStats(config));
        return copy;
    }

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         * at recovery time.
         */
        activeTxns = new ConcurrentHashMap<Long,ReplayTxn>();


        logger = LoggerUtils.getLogger(getClass());
        statistics = new StatGroup(ReplayStatDefinition.GROUP_NAME,
                                   ReplayStatDefinition.GROUP_DESC);


        nCommits = new LongStat(statistics, N_COMMITS);
        nCommitAcks = new LongStat(statistics, N_COMMIT_ACKS);
        nCommitSyncs = new LongStat(statistics, N_COMMIT_SYNCS);

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    /**
     * Returns a copy of the statistics associated with Replay
     */
    public StatGroup getStats(StatsConfig config) {
        StatGroup ret = statistics.cloneGroup(config.getClear());


        return ret;
    }

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    public StatGroup getProtocolStats(StatsConfig config) {
        final Protocol protocol = outputThread.protocol;


        return (protocol != null) ?
               protocol.getStats(config) :
               new StatGroup(BinaryProtocolStatDefinition.GROUP_NAME,
                             BinaryProtocolStatDefinition.GROUP_DESC);
    }

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            return;
        }


        feederManager.removeFeeder(this);


        StatGroup pstats = (inputThread.protocol != null) ?
            inputThread.protocol.getStats(StatsConfig.DEFAULT) :
            new StatGroup(BinaryProtocolStatDefinition.GROUP_NAME,
                          BinaryProtocolStatDefinition.GROUP_DESC);
        if (outputThread.protocol != null) {
            pstats.addAll(outputThread.protocol.getStats(StatsConfig.DEFAULT));
        }
        feederManager.incStats(pstats);


        LoggerUtils.info(logger, repImpl,
                         "Shutting down feeder for replica " +

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    public static int objectArraySize(int arrayLen) {
        return byteArraySize(arrayLen * OBJECT_ARRAY_ITEM_OVERHEAD);
    }


    StatGroup loadStats() {
        StatGroup stats = new StatGroup(MB_GROUP_NAME, MB_GROUP_DESC);
        new LongStat(stats, MB_SHARED_CACHE_TOTAL_BYTES,
                     totals.isSharedCache() ? totals.getCacheUsage() : 0);
        new LongStat(stats, MB_TOTAL_BYTES, getLocalCacheUsage());
        new LongStat(stats, MB_DATA_BYTES,
                     treeMemoryUsage.get() + treeAdminMemoryUsage.get());

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