co.cask.tephra.persist

Class LocalFileTransactionLog

java.lang.Object

co.cask.tephra.persist.AbstractTransactionLog

co.cask.tephra.persist.LocalFileTransactionLog

All Implemented Interfaces:

TransactionLog

public class LocalFileTransactionLog
extends AbstractTransactionLog

Reads and writes transaction logs against files in the local filesystem.

Nested Class Summary

Nested classes/interfaces inherited from class co.cask.tephra.persist.AbstractTransactionLog

AbstractTransactionLog.Entry

Field Summary

Fields inherited from class co.cask.tephra.persist.AbstractTransactionLog

timestamp

Constructor Summary

Constructors

Constructor and Description
LocalFileTransactionLog(File logFile, long timestamp, MetricsCollector metricsCollector) Creates a new transaction log using the given file instance.

Method Summary

Methods

Modifier and Type	Method and Description
protected TransactionLogWriter	createWriter() Returns a log writer to be used for appending any new TransactionEdit objects.
String	getName()
TransactionLogReader	getReader()

Methods inherited from class co.cask.tephra.persist.AbstractTransactionLog

append, append, close, getTimestamp, init, isClosed

Methods inherited from class java.lang.Object

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

Constructor Detail

LocalFileTransactionLog

public LocalFileTransactionLog(File logFile,
                       long timestamp,
                       MetricsCollector metricsCollector)

Creates a new transaction log using the given file instance.

Parameters:

logFile - The log file to use.

Method Detail

getName

public String getName()

Specified by:

getName in interface TransactionLog

Specified by:

getName in class AbstractTransactionLog

createWriter

protected TransactionLogWriter createWriter()
                                     throws IOException

Description copied from class: AbstractTransactionLog

Returns a log writer to be used for appending any new TransactionEdit objects.

Specified by:

createWriter in class AbstractTransactionLog

Throws:

IOException

getReader

public TransactionLogReader getReader()
                               throws IOException

Specified by:

getReader in interface TransactionLog

Specified by:

getReader in class AbstractTransactionLog

Throws:

IOException