Examples of com.sleepycat.je.dbi.DbConfigManager

com.sleepycat.je.dbi.DbConfigManager
DbConfigManager holds the configuration parameters for an environment. In general, all configuration parameters are represented by a ConfigParam defined in com.sleepycat.je.config.EnvironmentParams and can be represented by a property described by the EnvironmentConfig String constants. Environment parameters have some interesting twists because there are some attributes that are scoped by handle, such as the commit durability (txnSync, txnNoSync, etc) parameters. DbConfigManager is instantiated first by the EnvironmentImpl, and is loaded with the base configuration parameters. If replication is enabled, additional properties are added when the ReplicatedEnvironment is instantiated. In order to keep replication code out of the base code, replication parameters are loaded by way of the addConfigurations method.

     * specify the type of the array.
     */
    @SuppressWarnings("unchecked")
    public LockManager(EnvironmentImpl envImpl) {


        DbConfigManager configMgr = envImpl.getConfigManager();
        nLockTables = configMgr.getInt(EnvironmentParams.N_LOCK_TABLES);
        oldLockExceptions =
            configMgr.getBoolean(EnvironmentParams.LOCK_OLD_LOCK_EXCEPTIONS);
        lockTables = new Map[nLockTables];
        lockTableLatches = new Latch[nLockTables];
        for (int i = 0; i < nLockTables; i++) {
            lockTables[i] = new HashMap<Long,Lock>();
            lockTableLatches[i] = new Latch("Lock Table " + i);

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        throws DatabaseException {


        /* Set up log buffers. */
        this.envImpl = envImpl;
        this.fileManager = envImpl.getFileManager();
        DbConfigManager configManager = envImpl.getConfigManager();
        this.readOnly = readOnly;
        logBufferPool = new LogBufferPool(fileManager, envImpl);


        /* See if we're configured to do a checksum when reading in objects. */
        doChecksumOnRead =
            configManager.getBoolean(EnvironmentParams.LOG_CHECKSUM_READ);


        logWriteLatch = new Latch(DEBUG_NAME);
        readBufferSize =
            configManager.getInt(EnvironmentParams.LOG_FAULT_READ_SIZE);


        /* Do the stats definitions. */
        stats = new StatGroup(GROUP_NAME, GROUP_DESC);
        nRepeatFaultReads = new LongStat(stats, LOGMGR_REPEAT_FAULT_READS);
        nTempBufferWrites = new LongStat(stats, LOGMGR_TEMP_BUFFER_WRITES);

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        logger = LoggerUtils.getLogger(getClass());
        reentrancyGuard = new ReentrancyGuard(envImpl, logger);
        shutdownRequested = new AtomicBoolean(false);


        DbConfigManager configManager = envImpl.getConfigManager();


        int corePoolSize = 
            configManager.getInt(EnvironmentParams.EVICTOR_CORE_THREADS);
        int maxPoolSize = 
            configManager.getInt(EnvironmentParams.EVICTOR_MAX_THREADS);
        long keepAliveTime =
            configManager.getDuration(EnvironmentParams.EVICTOR_KEEP_ALIVE);
        terminateMillis = configManager.getDuration
            (EnvironmentParams.EVICTOR_TERMINATE_TIMEOUT);


        RejectedExecutionHandler rejectHandler = 
            new RejectEvictHandler(nThreadUnavailable);
        
        evictionPool = 
            new ThreadPoolExecutor(corePoolSize,
                                   maxPoolSize,
                                   keepAliveTime,
                                   TimeUnit.MILLISECONDS,
                                   new ArrayBlockingQueue<Runnable>(1),
                                   new StoppableThreadFactory(envImpl,
                                                              "JEEvictor",
                                                              logger),
                                   rejectHandler);


        runEvictor = 
            configManager.getBoolean(EnvironmentParams.ENV_RUN_EVICTOR);


        allowBinDeltas = configManager.getBoolean
            (EnvironmentParams.EVICTOR_ALLOW_BIN_DELTAS);


        /* 
         * Request notification of mutable property changes. Do this after all
         * fields in the evictor have been initialized, in case this is called

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        nLogFSyncs = new LongStat(stats, FILEMGR_LOG_FSYNCS);
        nFSyncTime = new LongStat(stats, LogStatDefinition.FSYNCMGR_FSYNC_TIME);


        try {
            /* Read configurations. */
            DbConfigManager configManager = envImpl.getConfigManager();
            maxFileSize =
                configManager.getLong(EnvironmentParams.LOG_FILE_MAX);


            useWriteQueue = configManager.getBoolean
                (EnvironmentParams.LOG_USE_WRITE_QUEUE);
            writeQueueSize = configManager.getInt
                (EnvironmentParams.LOG_WRITE_QUEUE_SIZE);
            useODSYNC = configManager.getBoolean
                (EnvironmentParams.LOG_USE_ODSYNC);
            VERIFY_CHECKSUMS = configManager.getBoolean
                (EnvironmentParams.LOG_VERIFY_CHECKSUMS);
            nDataDirs =
                configManager.getInt(EnvironmentParams.LOG_N_DATA_DIRECTORIES);
            if (nDataDirs != 0) {
                dbEnvDataDirs = gatherDataDirs();
            } else {
                checkNoDataDirs();
                dbEnvDataDirs = null;

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               IOException {


        openEnv(false);


        envImpl = DbInternal.getEnvironmentImpl(env);
        DbConfigManager cm = envImpl.getConfigManager();
        readBufferSize = cm.getInt(EnvironmentParams.LOG_ITERATOR_READ_SIZE);


        /*
         * Find the end of the log.
         */
        LastFileReader reader = new LastFileReader(envImpl, readBufferSize);

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        this.nameIdPair = repNode.getNameIdPair();


        String groupName;
        if (envImpl != null) {
            logger = LoggerUtils.getLogger(getClass());
            final DbConfigManager configManager = envImpl.getConfigManager();
            groupName = configManager.get(GROUP_NAME);
            int rebroadcastPeriod = configManager.
                getDuration(ELECTIONS_REBROADCAST_PERIOD);
            rebroadcastTask = new RebroadcastTask(rebroadcastPeriod);
        } else {
            logger = LoggerUtils.getLoggerFormatterNeeded(getClass());
            groupName = "TEST_GROUP";

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        /* Number of reads since the last time getAndResetNReads was called. */
        private int nReadOperations;


        protected ReadWindow(int readBufferSize, EnvironmentImpl envImpl) {
            DbConfigManager configManager = envImpl.getConfigManager();
            maxReadBufferSize =
                configManager.getInt(EnvironmentParams.LOG_ITERATOR_MAX_SIZE);
            this.envImpl = envImpl;
            fileManager = envImpl.getFileManager();


            readBuffer = ByteBuffer.allocate(readBufferSize);
            threadSafeBufferFlip(readBuffer);

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    private final StatGroup stats;
    private final LongStat requiredEvictBytesStat;


    Arbiter(EnvironmentImpl envImpl) {


        DbConfigManager configManager = envImpl.getConfigManager();
        evictBytesSetting = configManager.getLong
            (EnvironmentParams.EVICTOR_EVICT_BYTES);


        stats = new StatGroup(GROUP_NAME, GROUP_DESC);
        requiredEvictBytesStat = new LongStat(stats, 
                                              EVICTOR_REQUIRED_EVICT_BYTES);

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    public RepGroupDB(RepImpl repImpl)
        throws DatabaseException, IOException {


        this.repImpl = repImpl;


        DbConfigManager configManager = repImpl.getConfigManager();
        emptyGroup = new RepGroupImpl(configManager.get(GROUP_NAME));
        logger = LoggerUtils.getLogger(getClass());
    }

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     * @throws DatabaseException
     */
    public void addFirstNode()
        throws DatabaseException {


        DbConfigManager configManager = repImpl.getConfigManager();
        String groupName = configManager.get(GROUP_NAME);
        String nodeName = configManager.get(NODE_NAME);


        DatabaseImpl groupDbImpl = repImpl.createGroupDb();


        /* setup the group information as data. */
        GroupBinding groupBinding = new GroupBinding();

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Related Classes of com.sleepycat.je.dbi.DbConfigManager

com.sleepycat.je.cleaner.Cleaner

com.sleepycat.je.cleaner.UtilizationCalculator

com.sleepycat.je.config.ConfigParam

com.sleepycat.je.evictor.Arbiter

com.sleepycat.je.evictor.Evictor

com.sleepycat.je.evictor.TargetSelector

com.sleepycat.je.log.FileManager

com.sleepycat.je.log.FileReader

com.sleepycat.je.log.FileReader$ReadWindow

com.sleepycat.je.log.INFileReaderTest

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