Examples of LastFileReader

com.sleepycat.je.log.LastFileReader
LastFileReader traverses the last log file, doing checksums and looking for the end of the log. Different log types can be registered with it and it will remember the last occurrence of targeted entry types.

Examples of com.sleepycat.je.log.LastFileReader


        /* Configure the startLsn and endOfFileLsn if reading backwards. */
        long endOfFileLsn = DbLsn.NULL_LSN;
        if (startLsn == DbLsn.NULL_LSN && endLsn == DbLsn.NULL_LSN &&
            !forwards) {
            LastFileReader fileReader =
                new LastFileReader(env, readBufferSize);
            while (fileReader.readNextEntry()) {
            }
            startLsn = fileReader.getLastValidLsn();
            endOfFileLsn = fileReader.getEndOfLog();
        }


        try {


            /*

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Examples of com.sleepycat.je.log.LastFileReader

        readBufferSize = cm.getInt(EnvironmentParams.LOG_ITERATOR_READ_SIZE);


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


        /* Tell the fileManager where the end of the log is. */
        long lastUsedLsn = reader.getLastValidLsn();
        long nextAvailableLsn = reader.getEndOfLog();
        envImpl.getFileManager().setLastPosition(nextAvailableLsn,
                                                 lastUsedLsn,
                                                 reader.getPrevOffset());


        try {
            /* Pass 1: Scavenge the dbtree. */
            if (verbose) {
                System.out.println("Pass 1: " + new Date());

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Examples of com.sleepycat.je.log.LastFileReader

        throws IOException, DatabaseException {


        startupTracker.start(Phase.FIND_END_OF_LOG);
        startupTracker.setProgress(RecoveryProgress.FIND_END_OF_LOG);
        Counter counter = startupTracker.getCounter(Phase.FIND_END_OF_LOG);
        LastFileReader reader = new LastFileReader(envImpl, readBufferSize);


        /*
         * Tell the reader to iterate through the log file until we hit the end
         * of the log or an invalid entry.  Remember the last seen CkptEnd, and
         * the first CkptStart with no following CkptEnd.
         */
        while (reader.readNextEntry()) {
            counter.incNumRead();
            counter.incNumProcessed();
            LogEntryType type = reader.getEntryType();
            if (LogEntryType.LOG_CKPT_END.equals(type)) {
                info.checkpointEndLsn = reader.getLastLsn();
                info.partialCheckpointStartLsn = DbLsn.NULL_LSN;
            } else if (LogEntryType.LOG_CKPT_START.equals(type)) {
                if (info.partialCheckpointStartLsn == DbLsn.NULL_LSN) {
                    info.partialCheckpointStartLsn = reader.getLastLsn();
                }
            } else if (LogEntryType.LOG_DBTREE.equals(type)) {
                info.useRootLsn = reader.getLastLsn();
            }
        }


        /*
         * The last valid LSN should point to the start of the last valid log
         * entry, while the end of the log should point to the first byte of
         * blank space, so these two should not be the same.
         */
        assert (reader.getLastValidLsn() != reader.getEndOfLog()):
        "lastUsed=" + DbLsn.getNoFormatString(reader.getLastValidLsn()) +
            " end=" + DbLsn.getNoFormatString(reader.getEndOfLog());


        /* Now truncate if necessary. */
        if (!readOnly) {
            reader.setEndOfFile();
        }


        /* Tell the fileManager where the end of the log is. */
        info.lastUsedLsn = reader.getLastValidLsn();
        info.nextAvailableLsn = reader.getEndOfLog();
        counter.setRepeatIteratorReads(reader.getNRepeatIteratorReads());
        envImpl.getFileManager().setLastPosition(info.nextAvailableLsn,
                                                 info.lastUsedLsn,
                                                 reader.getPrevOffset());
        startupTracker.stop(Phase.FIND_END_OF_LOG);
    }

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Examples of com.sleepycat.je.log.LastFileReader

  }


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


  /* Tell the fileManager where the end of the log is. */
  long lastUsedLsn = reader.getLastValidLsn();
  long nextAvailableLsn = reader.getEndOfLog();
  envImpl.getFileManager().setLastPosition(nextAvailableLsn,
             lastUsedLsn,
             reader.getPrevOffset());


        try {
            /* Pass 1: Scavenge the dbtree. */
            if (verbose) {
                System.out.println("Pass 1: " + new Date());

View Full Code Here

Examples of com.sleepycat.je.log.LastFileReader

     * perusing the log, return the last checkpoint LSN if we happen to see it.
     */
    private void findEndOfLog(boolean readOnly)
        throws IOException, DatabaseException {


        LastFileReader reader = new LastFileReader(env, readBufferSize);


        /* 
         * Tell the reader to iterate through the log file until we hit the end
         * of the log or an invalid entry.
         * Remember the last seen CkptEnd, and the first CkptStart with no
         * following CkptEnd.
         */
        while (reader.readNextEntry()) {
            LogEntryType type = reader.getEntryType();
            if (LogEntryType.LOG_CKPT_END.equals(type)) {
                info.checkpointEndLsn = reader.getLastLsn();
                info.partialCheckpointStartLsn = DbLsn.NULL_LSN;
            } else if (LogEntryType.LOG_CKPT_START.equals(type)) {
                if (info.partialCheckpointStartLsn == DbLsn.NULL_LSN) {
                    info.partialCheckpointStartLsn = reader.getLastLsn();
                }
            }
        }


        assert (reader.getLastValidLsn() != reader.getEndOfLog()):
            "lastUsed=" + DbLsn.getNoFormatString(reader.getLastValidLsn()) +
            " end=" + DbLsn.getNoFormatString(reader.getEndOfLog());




        /* Now truncate if necessary. */
        if (!readOnly) {
            reader.setEndOfFile();
        }


        /* Tell the fileManager where the end of the log is. */
        info.lastUsedLsn = reader.getLastValidLsn();
        info.nextAvailableLsn = reader.getEndOfLog();
        info.nRepeatIteratorReads += reader.getNRepeatIteratorReads();
        env.getFileManager().setLastPosition(info.nextAvailableLsn,
                                             info.lastUsedLsn,
                                             reader.getPrevOffset());


        /*
         * Now the logging system is initialized and can do more
         * logging. Enable publishing of debug log messages to the database
         * log.

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Examples of com.sleepycat.je.log.LastFileReader

     * perusing the log, return the last checkpoint LSN if we happen to see it.
     */
    private void findEndOfLog(boolean readOnly)
        throws IOException, DatabaseException {


        LastFileReader reader = new LastFileReader(env, readBufferSize);


        /* 
         * Tell the reader to iterate through the log file until we hit the end
         * of the log or an invalid entry.
         * Remember the last seen CkptEnd, and the first CkptStart with no
         * following CkptEnd.
         */
        while (reader.readNextEntry()) {
            LogEntryType type = reader.getEntryType();
            if (LogEntryType.LOG_CKPT_END.equals(type)) {
                info.checkpointEndLsn = reader.getLastLsn();
                info.partialCheckpointStartLsn = DbLsn.NULL_LSN;
            } else if (LogEntryType.LOG_CKPT_START.equals(type)) {
                if (info.partialCheckpointStartLsn == DbLsn.NULL_LSN) {
                    info.partialCheckpointStartLsn = reader.getLastLsn();
                }
            }
        }


        assert (reader.getLastValidLsn() != reader.getEndOfLog()):
            "lastUsed=" + DbLsn.getNoFormatString(reader.getLastValidLsn()) +
            " end=" + DbLsn.getNoFormatString(reader.getEndOfLog());




        /* Now truncate if necessary. */
        if (!readOnly) {
            reader.setEndOfFile();
        }


        /* Tell the fileManager where the end of the log is. */
        info.lastUsedLsn = reader.getLastValidLsn();
        info.nextAvailableLsn = reader.getEndOfLog();
        info.nRepeatIteratorReads += reader.getNRepeatIteratorReads();
        env.getFileManager().setLastPosition(info.nextAvailableLsn,
                                             info.lastUsedLsn,
                                             reader.getPrevOffset());


        /*
         * Now the logging system is initialized and can do more
         * logging. Enable publishing of debug log messages to the database
         * log.

View Full Code Here

Examples of com.sleepycat.je.log.LastFileReader

  }


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


  /* Tell the fileManager where the end of the log is. */
  long lastUsedLsn = reader.getLastValidLsn();
  long nextAvailableLsn = reader.getEndOfLog();
  envImpl.getFileManager().setLastPosition(nextAvailableLsn,
             lastUsedLsn,
             reader.getPrevOffset());


        try {
            /* Pass 1: Scavenge the dbtree. */
            if (verbose) {
                System.out.println("Pass 1: " + new Date());

View Full Code Here

Examples of com.sleepycat.je.log.LastFileReader

     * perusing the log, return the last checkpoint LSN if we happen to see it.
     */
    private void findEndOfLog(boolean readOnly)
        throws IOException, DatabaseException {


        LastFileReader reader = new LastFileReader(envImpl, readBufferSize);


        /*
         * Tell the reader to iterate through the log file until we hit the end
         * of the log or an invalid entry.  Remember the last seen CkptEnd, and
         * the first CkptStart with no following CkptEnd.
         */
        while (reader.readNextEntry()) {
            LogEntryType type = reader.getEntryType();
            if (LogEntryType.LOG_CKPT_END.equals(type)) {
                info.checkpointEndLsn = reader.getLastLsn();
                info.partialCheckpointStartLsn = DbLsn.NULL_LSN;
            } else if (LogEntryType.LOG_CKPT_START.equals(type)) {
                if (info.partialCheckpointStartLsn == DbLsn.NULL_LSN) {
                    info.partialCheckpointStartLsn = reader.getLastLsn();
                }
            } else if (LogEntryType.LOG_ROOT.equals(type)) {
                info.useRootLsn = reader.getLastLsn();
            }
        }


        /*
         * The last valid LSN should point to the start of the last valid log
         * entry, while the end of the log should point to the first byte of
         * blank space, so these two should not be the same.
         */
        assert (reader.getLastValidLsn() != reader.getEndOfLog()):
        "lastUsed=" + DbLsn.getNoFormatString(reader.getLastValidLsn()) +
            " end=" + DbLsn.getNoFormatString(reader.getEndOfLog());


        /* Now truncate if necessary. */
        if (!readOnly) {
            reader.setEndOfFile();
        }


        /* Tell the fileManager where the end of the log is. */
        info.lastUsedLsn = reader.getLastValidLsn();
        info.nextAvailableLsn = reader.getEndOfLog();
        info.nRepeatIteratorReads += reader.getNRepeatIteratorReads();
        envImpl.getFileManager().setLastPosition(info.nextAvailableLsn,
                                                 info.lastUsedLsn,
                                                 reader.getPrevOffset());
    }

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Examples of com.sleepycat.je.log.LastFileReader

        readBufferSize = cm.getInt(EnvironmentParams.LOG_ITERATOR_READ_SIZE);


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


        /* Tell the fileManager where the end of the log is. */
        long lastUsedLsn = reader.getLastValidLsn();
        long nextAvailableLsn = reader.getEndOfLog();
        envImpl.getFileManager().setLastPosition(nextAvailableLsn,
                                                 lastUsedLsn,
                                                 reader.getPrevOffset());


        try {
            /* Pass 1: Scavenge the dbtree. */
            if (verbose) {
                System.out.println("Pass 1: " + new Date());

View Full Code Here

Examples of com.sleepycat.je.log.LastFileReader

     * perusing the log, return the last checkpoint LSN if we happen to see it.
     */
    private void findEndOfLog(boolean readOnly)
        throws IOException, DatabaseException {


        LastFileReader reader = new LastFileReader(env, readBufferSize);


        /* 
         * Tell the reader to iterate through the log file until we hit the end
         * of the log or an invalid entry.
         * Remember the last seen CkptEnd, and the first CkptStart with no
         * following CkptEnd.
         */
        while (reader.readNextEntry()) {
            LogEntryType type = reader.getEntryType();
            if (LogEntryType.LOG_CKPT_END.equals(type)) {
                info.checkpointEndLsn = reader.getLastLsn();
                info.partialCheckpointStartLsn = DbLsn.NULL_LSN;
            } else if (LogEntryType.LOG_CKPT_START.equals(type)) {
                if (info.partialCheckpointStartLsn == DbLsn.NULL_LSN) {
                    info.partialCheckpointStartLsn = reader.getLastLsn();
                }
            }
        }


        assert (reader.getLastValidLsn() != reader.getEndOfLog()):
            "lastUsed=" + DbLsn.getNoFormatString(reader.getLastValidLsn()) +
            " end=" + DbLsn.getNoFormatString(reader.getEndOfLog());




        /* Now truncate if necessary. */
        if (!readOnly) {
            reader.setEndOfFile();
        }


        /* Tell the fileManager where the end of the log is. */
        info.lastUsedLsn = reader.getLastValidLsn();
        info.nextAvailableLsn = reader.getEndOfLog();
        info.nRepeatIteratorReads += reader.getNRepeatIteratorReads();
        env.getFileManager().setLastPosition(info.nextAvailableLsn,
                                             info.lastUsedLsn,
                                             reader.getPrevOffset());


        /*
         * Now the logging system is initialized and can do more
         * logging. Enable publishing of debug log messages to the database
         * log.

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