org.tranche.flatfile.logs
Class DiskBackedTransactionLog

java.lang.Object
  org.tranche.flatfile.logs.DiskBackedTransactionLog

All Implemented Interfaces:

DataBlockUtilLog

public class DiskBackedTransactionLog
extends java.lang.Object
implements DataBlockUtilLog

Logs every transaction. Useful for stress testing, but will negatively impact performance due to transaction writes.

Author:

Bryan Smith - bryanesmith@gmail.com

Constructor Summary

DiskBackedTransactionLog(java.io.File logFile)

Method Summary

void	close() Close off resources associated with this log.
long	getBlockGetFailures() Uses the default log.
long	getBlockGetSuccesses() Uses the default log.
long	getBlockSetFailures() Uses the default log.
long	getBlockSetSuccesses() Uses the default log.
java.io.File	getLogFile() Return the file used by the log.
long	getRuntime() Uses the default log.
long	getTimeSpentMerging() Uses the default log.
void	logGetBlockFailed(BigHash hash) Log failed get request.
void	logGetBlockSucceed(BigHash hash) Log successful get request.
void	logGetStarted(BigHash hash) Log start of a get request.
void	logHasFalse(BigHash hash) Log does not have a chunk.
void	logHasStarted(BigHash hash) Log the start of a has chunk activity.
void	logHasTrue(BigHash hash) Log has a chunk.
void	logMergeFinish(java.io.File datablock) Log stop of merge.
void	logMergeStart(java.io.File datablock) Log start of merge.
void	logSetBlockFailed(BigHash hash) Log failed set request.
void	logSetBlockSucceed(BigHash hash) Log successful set request.
void	logSetStarted(BigHash hash) Log start of a set request.
void	restart() Reset resources.
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

DiskBackedTransactionLog

public DiskBackedTransactionLog(java.io.File logFile)
                         throws java.lang.Exception

Parameters:

logFile -

Throws:

java.lang.Exception

Method Detail

restart

public void restart()
             throws java.lang.Exception

Reset resources.

Throws:

java.lang.Exception

getLogFile

public java.io.File getLogFile()

Return the file used by the log.

Returns:

logMergeStart

public void logMergeStart(java.io.File datablock)

Log start of merge.

Specified by:

logMergeStart in interface DataBlockUtilLog

Parameters:

datablock -

logMergeFinish

public void logMergeFinish(java.io.File datablock)

Log stop of merge.

Specified by:

logMergeFinish in interface DataBlockUtilLog

Parameters:

datablock -

logHasStarted

public void logHasStarted(BigHash hash)

Log the start of a has chunk activity.

Specified by:

logHasStarted in interface DataBlockUtilLog

Parameters:

hash -

logHasTrue

public void logHasTrue(BigHash hash)

Log has a chunk.

Specified by:

logHasTrue in interface DataBlockUtilLog

Parameters:

hash -

logHasFalse

public void logHasFalse(BigHash hash)

Log does not have a chunk.

Specified by:

logHasFalse in interface DataBlockUtilLog

Parameters:

hash -

logGetStarted

public void logGetStarted(BigHash hash)

Log start of a get request.

Specified by:

logGetStarted in interface DataBlockUtilLog

Parameters:

hash -

logGetBlockSucceed

public void logGetBlockSucceed(BigHash hash)

Log successful get request.

Specified by:

logGetBlockSucceed in interface DataBlockUtilLog

Parameters:

hash -

logGetBlockFailed

public void logGetBlockFailed(BigHash hash)

Log failed get request.

Specified by:

logGetBlockFailed in interface DataBlockUtilLog

Parameters:

hash -

logSetStarted

public void logSetStarted(BigHash hash)

Log start of a set request.

Specified by:

logSetStarted in interface DataBlockUtilLog

Parameters:

hash -

logSetBlockSucceed

public void logSetBlockSucceed(BigHash hash)

Log successful set request.

Specified by:

logSetBlockSucceed in interface DataBlockUtilLog

Parameters:

hash -

logSetBlockFailed

public void logSetBlockFailed(BigHash hash)

Log failed set request.

Specified by:

logSetBlockFailed in interface DataBlockUtilLog

Parameters:

hash -

getTimeSpentMerging

public long getTimeSpentMerging()

Uses the default log. For more information, call logs directly.

Specified by:

getTimeSpentMerging in interface DataBlockUtilLog

Returns:

getRuntime

public long getRuntime()

Uses the default log. For more information, call logs directly.

Specified by:

getRuntime in interface DataBlockUtilLog

Returns:

toString

public java.lang.String toString()

Specified by:

toString in interface DataBlockUtilLog

Overrides:

toString in class java.lang.Object

getBlockGetSuccesses

public long getBlockGetSuccesses()

Uses the default log. For more information, call logs directly.

Specified by:

getBlockGetSuccesses in interface DataBlockUtilLog

Returns:

getBlockGetFailures

public long getBlockGetFailures()

Uses the default log. For more information, call logs directly.

Specified by:

getBlockGetFailures in interface DataBlockUtilLog

Returns:

getBlockSetSuccesses

public long getBlockSetSuccesses()

Uses the default log. For more information, call logs directly.

Specified by:

getBlockSetSuccesses in interface DataBlockUtilLog

Returns:

getBlockSetFailures

public long getBlockSetFailures()

Uses the default log. For more information, call logs directly.

Specified by:

getBlockSetFailures in interface DataBlockUtilLog

Returns:

close

public void close()
           throws java.lang.Exception

Close off resources associated with this log.

Specified by:

close in interface DataBlockUtilLog

Throws:

java.lang.Exception