io.permazen.kv.raft

Class LogEntry

java.lang.Object

io.permazen.kv.raft.LogEntry

public class LogEntry
extends Object

Represents one unapplied Raft log entry.

Field Summary

Fields

Modifier and Type	Field and Description
static Comparator<LogEntry>	SORT_BY_INDEX Sorts instances by log index.

Method Summary

Modifier and Type	Method and Description
int	getAge() Get the age of this log entry since instantiation.
String[]	getConfigChange() Get the cluster config change associated with this log entry, if any.
File	getFile() Get the on-disk file for this log entry.
long	getFileSize() Get the size of the on-disk file for this log entry.
long	getIndex() Get the index of this instance.
long	getTerm() Get the term of this instance.
static long[]	parseFileName(String fileName) Parse a log file name, extracting the log term and index.
String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

SORT_BY_INDEX

public static final Comparator<LogEntry> SORT_BY_INDEX

Sorts instances by log index.

Method Detail

getAge

public int getAge()

Get the age of this log entry since instantiation.

Returns:

age in milliseconds

getTerm

public long getTerm()

Get the term of this instance.

Returns:

associated log entry term

getIndex

public long getIndex()

Get the index of this instance.

Returns:

associated log entry index

getConfigChange

public String[] getConfigChange()

Get the cluster config change associated with this log entry, if any.

The returned array is a copy; changes have no effect on this instance.

Returns:

cluster config change, or null if none

See Also:

RaftKVTransaction.configChange

getFileSize

public long getFileSize()

Get the size of the on-disk file for this log entry.

Returns:

log entry file size

getFile

public File getFile()

Get the on-disk file for this log entry.

Returns:

log entry file

parseFileName

public static long[] parseFileName(String fileName)

Parse a log file name, extracting the log term and index.

Parameters:

fileName - file name

Returns:

array of length two containing [index, term], or null if parse fails

Throws:

IllegalArgumentException - if fileName is null

toString

public String toString()

Overrides:

toString in class Object