tachyon
Class Log4jFileAppender
java.lang.Object
org.apache.log4j.AppenderSkeleton
org.apache.log4j.WriterAppender
org.apache.log4j.FileAppender
tachyon.Log4jFileAppender
- All Implemented Interfaces:
- org.apache.log4j.Appender, org.apache.log4j.spi.OptionHandler
public class Log4jFileAppender
- extends org.apache.log4j.FileAppender
Custom log4j appender which preserves old logs on system restart, rolls over logs based on
both size and day. Also implements batch deletion of logs when the maximum backup index is
reached.
Fields inherited from class org.apache.log4j.FileAppender |
bufferedIO, bufferSize, fileAppend, fileName |
Fields inherited from class org.apache.log4j.WriterAppender |
encoding, immediateFlush, qw |
Fields inherited from class org.apache.log4j.AppenderSkeleton |
closed, errorHandler, headFilter, layout, name, tailFilter, threshold |
Method Summary |
void |
activateOptions()
Called when a new log attempt is made, either due to server restart or rollover. |
void |
setDeletionPercentage(int deletionPercentage)
|
void |
setFile(String fileName,
boolean append,
boolean bufferedIO,
int bufferSize)
Creates a LazyFileOutputStream so logs are only created when a message is logged. |
void |
setMaxBackupIndex(int maxBackups)
|
void |
setMaxFileSize(int maxFileSizeMB)
|
void |
subAppend(org.apache.log4j.spi.LoggingEvent event)
Called whenever a new message is logged. |
Methods inherited from class org.apache.log4j.FileAppender |
closeFile, getAppend, getBufferedIO, getBufferSize, getFile, reset, setAppend, setBufferedIO, setBufferSize, setFile, setQWForFiles |
Methods inherited from class org.apache.log4j.WriterAppender |
append, checkEntryConditions, close, closeWriter, createWriter, getEncoding, getImmediateFlush, requiresLayout, setEncoding, setErrorHandler, setImmediateFlush, setWriter, shouldFlush, writeFooter, writeHeader |
Methods inherited from class org.apache.log4j.AppenderSkeleton |
addFilter, clearFilters, doAppend, finalize, getErrorHandler, getFilter, getFirstFilter, getLayout, getName, getThreshold, isAsSevereAsThreshold, setLayout, setName, setThreshold |
Log4jFileAppender
public Log4jFileAppender()
setMaxBackupIndex
public void setMaxBackupIndex(int maxBackups)
setMaxFileSize
public void setMaxFileSize(int maxFileSizeMB)
setDeletionPercentage
public void setDeletionPercentage(int deletionPercentage)
activateOptions
public void activateOptions()
- Called when a new log attempt is made, either due to server restart or rollover. The filename
is modified to identify the logging node in getNewFileName.
- Specified by:
activateOptions
in interface org.apache.log4j.spi.OptionHandler
- Overrides:
activateOptions
in class org.apache.log4j.FileAppender
setFile
public void setFile(String fileName,
boolean append,
boolean bufferedIO,
int bufferSize)
throws IOException
- Creates a LazyFileOutputStream so logs are only created when a message is logged.
- Overrides:
setFile
in class org.apache.log4j.FileAppender
- Parameters:
fileName
- append
- bufferedIO
- bufferSize
-
- Throws:
IOException
subAppend
public void subAppend(org.apache.log4j.spi.LoggingEvent event)
- Called whenever a new message is logged. Checks both the date and size to determine if
rollover is necessary.
- Overrides:
subAppend
in class org.apache.log4j.WriterAppender
- Parameters:
event
-
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