Examples of ScavengerFileReader

com.sleepycat.je.log.ScavengerFileReader
A ScavengerFileReader reads the log backwards. If it encounters a checksum error, it goes to the start of that log file and reads forward until it encounters a checksum error. It then continues the reading backwards in the log. The caller may set "dumpCorruptedBounds" to true if information about the start and finish of the corrupted portion should be displayed on stderr. The caller is expected to implement processEntryCallback. This method is called once for each entry that the ScavengerFileReader finds in the log.

Examples of com.sleepycat.je.log.ScavengerFileReader

        throws DatabaseException {


        committedTxnIdsSeen = new BitMap();
        lnNodesSeen = new TreeSet<CompareSlot>();


        final ScavengerFileReader scavengerReader =
            new ScavengerFileReader(envImpl, readBufferSize, lastUsedLsn,
                                    DbLsn.NULL_LSN, nextAvailableLsn) {
                protected void processEntryCallback(LogEntry entry,
                                                    LogEntryType entryType)
                    throws DatabaseException {


                    processDbTreeEntry(entry, entryType);
                }
            };


        scavengerReader.setTargetType(LogEntryType.LOG_MAPLN_TRANSACTIONAL);
        scavengerReader.setTargetType(LogEntryType.LOG_MAPLN);
        scavengerReader.setTargetType(LogEntryType.LOG_NAMELN_TRANSACTIONAL);
        scavengerReader.setTargetType(LogEntryType.LOG_NAMELN);
        scavengerReader.setTargetType(LogEntryType.LOG_TXN_COMMIT);
        scavengerReader.setTargetType(LogEntryType.LOG_TXN_ABORT);
        lastTime = System.currentTimeMillis();
        long fileNum = -1;
        while (scavengerReader.readNextEntry()) {
            fileNum = reportProgress(fileNum,
                                     scavengerReader.getLastLsn());
        }
    }

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Examples of com.sleepycat.je.log.ScavengerFileReader

     * Pass 2: scavenge the regular (non-dbtree) environment.
     */
    private void scavenge(long lastUsedLsn, long nextAvailableLsn)
        throws DatabaseException {


        final ScavengerFileReader scavengerReader =
            new ScavengerFileReader(envImpl, readBufferSize, lastUsedLsn,
                                    DbLsn.NULL_LSN, nextAvailableLsn) {
                protected void processEntryCallback(LogEntry entry,
                                                    LogEntryType entryType)
                    throws DatabaseException {


                    processRegularEntry(entry, entryType);
                }
            };


        /*
         * Note: committed transaction id map has been created already, no
         * need to read TXN_COMMITS on this pass.
         */
        for (LogEntryType entryType : LogEntryType.getAllTypes()) {
            if (entryType.isUserLNType()) {
                scavengerReader.setTargetType(entryType);
            }
        }
        scavengerReader.setDumpCorruptedBounds(dumpCorruptedBounds);


        long progressFileNum = -1;
        while (scavengerReader.readNextEntry()) {
            progressFileNum = reportProgress(progressFileNum,
                                             scavengerReader.getLastLsn());
        }
    }

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Examples of com.sleepycat.je.log.ScavengerFileReader

  throws IOException, DatabaseException {


  committedTxnIdsSeen = new BitMap();
  nodeIdsSeen = new BitMap();


  final ScavengerFileReader scavengerReader =
      new ScavengerFileReader(envImpl, readBufferSize, lastUsedLsn,
            DbLsn.NULL_LSN, nextAvailableLsn) {
    protected void processEntryCallback(LogEntry entry,
                LogEntryType entryType)
        throws DatabaseException {


        processDbTreeEntry(entry, entryType);
    }
      };


        scavengerReader.setTargetType(LogEntryType.LOG_MAPLN_TRANSACTIONAL);
        scavengerReader.setTargetType(LogEntryType.LOG_MAPLN);
        scavengerReader.setTargetType(LogEntryType.LOG_NAMELN_TRANSACTIONAL);
        scavengerReader.setTargetType(LogEntryType.LOG_NAMELN);
        scavengerReader.setTargetType(LogEntryType.LOG_TXN_COMMIT);
        scavengerReader.setTargetType(LogEntryType.LOG_TXN_ABORT);
  lastTime = System.currentTimeMillis();
  long fileNum = -1;
  while (scavengerReader.readNextEntry()) {
      fileNum = reportProgress(fileNum, 
             scavengerReader.getLastLsn());
  }
    }

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Examples of com.sleepycat.je.log.ScavengerFileReader

     * Pass 2: scavenge the regular (non-dbtree) environment.
     */
    private void scavenge(long lastUsedLsn, long nextAvailableLsn)
  throws IOException, DatabaseException {


  final ScavengerFileReader scavengerReader =
      new ScavengerFileReader(envImpl, readBufferSize, lastUsedLsn,
            DbLsn.NULL_LSN, nextAvailableLsn) {
    protected void processEntryCallback(LogEntry entry,
                LogEntryType entryType)
        throws DatabaseException {


        processRegularEntry(entry, entryType);
    }
      };


  /* 
   * Note: committed transaction id map has been created already, no
   * need to read TXN_COMMITS on this pass.
   */
        scavengerReader.setTargetType(LogEntryType.LOG_LN_TRANSACTIONAL);
        scavengerReader.setTargetType(LogEntryType.LOG_LN);
        scavengerReader.setTargetType
      (LogEntryType.LOG_DEL_DUPLN_TRANSACTIONAL);
        scavengerReader.setTargetType(LogEntryType.LOG_DEL_DUPLN);
  scavengerReader.setDumpCorruptedBounds(dumpCorruptedBounds);


  long progressFileNum = -1;
  while (scavengerReader.readNextEntry()) {
      progressFileNum = reportProgress(progressFileNum, 
                                             scavengerReader.getLastLsn());
  }
    }

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Examples of com.sleepycat.je.log.ScavengerFileReader

  throws IOException, DatabaseException {


  committedTxnIdsSeen = new BitMap();
  nodeIdsSeen = new BitMap();


  final ScavengerFileReader scavengerReader =
      new ScavengerFileReader(envImpl, readBufferSize, lastUsedLsn,
            DbLsn.NULL_LSN, nextAvailableLsn) {
    protected void processEntryCallback(LogEntry entry,
                LogEntryType entryType)
        throws DatabaseException {


        processDbTreeEntry(entry, entryType);
    }
      };


        scavengerReader.setTargetType(LogEntryType.LOG_MAPLN_TRANSACTIONAL);
        scavengerReader.setTargetType(LogEntryType.LOG_MAPLN);
        scavengerReader.setTargetType(LogEntryType.LOG_NAMELN_TRANSACTIONAL);
        scavengerReader.setTargetType(LogEntryType.LOG_NAMELN);
        scavengerReader.setTargetType(LogEntryType.LOG_TXN_COMMIT);
        scavengerReader.setTargetType(LogEntryType.LOG_TXN_ABORT);
  lastTime = System.currentTimeMillis();
  long fileNum = -1;
  while (scavengerReader.readNextEntry()) {
      fileNum = reportProgress(fileNum, 
             scavengerReader.getLastLsn());
  }
    }

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Examples of com.sleepycat.je.log.ScavengerFileReader

     * Pass 2: scavenge the regular (non-dbtree) environment.
     */
    private void scavenge(long lastUsedLsn, long nextAvailableLsn)
  throws IOException, DatabaseException {


  final ScavengerFileReader scavengerReader =
      new ScavengerFileReader(envImpl, readBufferSize, lastUsedLsn,
            DbLsn.NULL_LSN, nextAvailableLsn) {
    protected void processEntryCallback(LogEntry entry,
                LogEntryType entryType)
        throws DatabaseException {


        processRegularEntry(entry, entryType);
    }
      };


  /* 
   * Note: committed transaction id map has been created already, no
   * need to read TXN_COMMITS on this pass.
   */
        scavengerReader.setTargetType(LogEntryType.LOG_LN_TRANSACTIONAL);
        scavengerReader.setTargetType(LogEntryType.LOG_LN);
        scavengerReader.setTargetType
      (LogEntryType.LOG_DEL_DUPLN_TRANSACTIONAL);
        scavengerReader.setTargetType(LogEntryType.LOG_DEL_DUPLN);
  scavengerReader.setDumpCorruptedBounds(dumpCorruptedBounds);


  long progressFileNum = -1;
  while (scavengerReader.readNextEntry()) {
      progressFileNum = reportProgress(progressFileNum, 
                                             scavengerReader.getLastLsn());
  }
    }

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Examples of com.sleepycat.je.log.ScavengerFileReader

     * Pass 2: scavenge the regular (non-dbtree) environment.
     */
    private void scavenge(long lastUsedLsn, long nextAvailableLsn)
        throws DatabaseException {


        final ScavengerFileReader scavengerReader =
            new ScavengerFileReader(envImpl, readBufferSize, lastUsedLsn,
                                    DbLsn.NULL_LSN, nextAvailableLsn) {
                protected void processEntryCallback(LogEntry entry,
                                                    LogEntryType entryType)
                    throws DatabaseException {


                    processRegularEntry(entry, entryType);
                }
            };


        /*
         * Note: committed transaction id map has been created already, no
         * need to read TXN_COMMITS on this pass.
         */
        scavengerReader.setTargetType(LogEntryType.LOG_LN_TRANSACTIONAL);
        scavengerReader.setTargetType(LogEntryType.LOG_LN);
        scavengerReader.setTargetType
            (LogEntryType.LOG_DEL_DUPLN_TRANSACTIONAL);
        scavengerReader.setTargetType(LogEntryType.LOG_DEL_DUPLN);
        scavengerReader.setDumpCorruptedBounds(dumpCorruptedBounds);


        long progressFileNum = -1;
        while (scavengerReader.readNextEntry()) {
            progressFileNum = reportProgress(progressFileNum,
                                             scavengerReader.getLastLsn());
        }
    }

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Examples of com.sleepycat.je.log.ScavengerFileReader

        throws DatabaseException {


        committedTxnIdsSeen = new BitMap();
        nodeIdsSeen = new BitMap();


        final ScavengerFileReader scavengerReader =
            new ScavengerFileReader(envImpl, readBufferSize, lastUsedLsn,
                                    DbLsn.NULL_LSN, nextAvailableLsn) {
                protected void processEntryCallback(LogEntry entry,
                                                    LogEntryType entryType)
                    throws DatabaseException {


                    processDbTreeEntry(entry, entryType);
                }
            };


        scavengerReader.setTargetType(LogEntryType.LOG_MAPLN_TRANSACTIONAL);
        scavengerReader.setTargetType(LogEntryType.LOG_MAPLN);
        scavengerReader.setTargetType(LogEntryType.LOG_NAMELN_TRANSACTIONAL);
        scavengerReader.setTargetType(LogEntryType.LOG_NAMELN);
        scavengerReader.setTargetType(LogEntryType.LOG_TXN_COMMIT);
        scavengerReader.setTargetType(LogEntryType.LOG_TXN_ABORT);
        lastTime = System.currentTimeMillis();
        long fileNum = -1;
        while (scavengerReader.readNextEntry()) {
            fileNum = reportProgress(fileNum,
                                     scavengerReader.getLastLsn());
        }
    }

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