com.sleepycat.je.log

Class UtilizationFileReader

java.lang.Object

com.sleepycat.je.log.FileReader

com.sleepycat.je.log.UtilizationFileReader

public class UtilizationFileReader
extends FileReader

Summarizes the utilized and unutilized portion of each log file by examining each log entry. Does not use the Cleaner UtilizationProfile information in order to provide a second measure against which to evaluation the UtilizationProfile accuracy.

Field Summary

Fields inherited from class com.sleepycat.je.log.FileReader

anticipateChecksumErrors, cksumValidator, currentEntryHeader, currentEntryOffset, currentEntryPrevOffset, envImpl, eof, fileManager, nextEntryOffset, readBufferFileEnd, readBufferFileNum, readBufferFileStart, startLsn

Method Summary

Methods

Modifier and Type	Method and Description
static java.util.Map	calcFileSummaryMap(EnvironmentImpl env) Creates a UtilizationReader, reads the log, and returns the resulting Map of Long file number to FileSummary.
protected boolean	isTargetEntry(byte logEntryTypeNumber, byte logEntryTypeVersion)
protected boolean	processEntry(java.nio.ByteBuffer entryBuffer) Each file reader implements this method to process the entry data.

Methods inherited from class com.sleepycat.je.log.FileReader

getAndResetNReads, getLastEntrySize, getLastLsn, getNRepeatIteratorReads, getNumRead, initStartingPosition, readNextEntry, resyncReader, setAlwaysValidateChecksum

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

isTargetEntry

protected boolean isTargetEntry(byte logEntryTypeNumber,
                    byte logEntryTypeVersion)

Overrides:

isTargetEntry in class FileReader

Returns:

true if this reader should process this entry, or just skip over it.

processEntry

protected boolean processEntry(java.nio.ByteBuffer entryBuffer)
                        throws DatabaseException

Description copied from class: FileReader

Each file reader implements this method to process the entry data.

Specified by:

processEntry in class FileReader

Returns:

true if this entry should be returned

Throws:

DatabaseException

calcFileSummaryMap

public static java.util.Map calcFileSummaryMap(EnvironmentImpl env)
                                        throws java.io.IOException,
                                               DatabaseException

Creates a UtilizationReader, reads the log, and returns the resulting Map of Long file number to FileSummary.

Throws:

java.io.IOException

DatabaseException