org.apache.log4j.rolling
Class SizeBasedTriggeringPolicy

java.lang.Object
  org.apache.log4j.rolling.SizeBasedTriggeringPolicy

All Implemented Interfaces:

TriggeringPolicy, org.apache.log4j.spi.OptionHandler

public final class SizeBasedTriggeringPolicy
extends java.lang.Object
implements TriggeringPolicy, org.apache.log4j.spi.OptionHandler

SizeBasedTriggeringPolicy looks at size of the file being currently written to.

Author:

Ceki Gülcü, Curt Arnold

Constructor Summary

SizeBasedTriggeringPolicy()
Constructs a new instance.

SizeBasedTriggeringPolicy(long maxFileSize)
Constructs an new instance.

Method Summary

void	activateOptions() Prepares policy for use.
long	getMaxFileSize() Gets rollover threshold size in bytes.
boolean	isTriggeringEvent(org.apache.log4j.Appender appender, org.apache.log4j.spi.LoggingEvent event, java.lang.String file, long fileLength) Determines if a rollover may be appropriate at this time.
void	setMaxFileSize(long l) Sets rollover threshold size in bytes.

Methods inherited from class java.lang.Object

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

Constructor Detail

SizeBasedTriggeringPolicy

public SizeBasedTriggeringPolicy()

Constructs a new instance.

SizeBasedTriggeringPolicy

public SizeBasedTriggeringPolicy(long maxFileSize)

Constructs an new instance.

Parameters:

maxFileSize - rollover threshold size in bytes.

Method Detail

isTriggeringEvent

public boolean isTriggeringEvent(org.apache.log4j.Appender appender,
                                 org.apache.log4j.spi.LoggingEvent event,
                                 java.lang.String file,
                                 long fileLength)

Determines if a rollover may be appropriate at this time. If true is returned, RolloverPolicy.rollover will be called but it can determine that a rollover is not warranted.

Specified by:

isTriggeringEvent in interface TriggeringPolicy

Parameters:

appender - A reference to the appender.

event - A reference to the currently event.

file - The filename for the currently active log file.

fileLength - Length of the file in bytes.

Returns:

true if a rollover should occur.

getMaxFileSize

public long getMaxFileSize()

Gets rollover threshold size in bytes.

Returns:

rollover threshold size in bytes.

setMaxFileSize

public void setMaxFileSize(long l)

Sets rollover threshold size in bytes.

Parameters:

l - new value for rollover threshold size.

activateOptions

public void activateOptions()

Prepares policy for use.

Specified by:

activateOptions in interface org.apache.log4j.spi.OptionHandler