com.lf.commons.logging

Class LogMonitorHandler

java.lang.Object

java.util.logging.Handler

com.lf.commons.logging.LogMonitorHandler

public class LogMonitorHandler
extends java.util.logging.Handler

Filters log records for certain messages by evaluating regular expressions.

Like the UNIX tool logsurfer this class processes log records and tries to find certain patterns based on regular expressions. If a specific log record is found the handlers then calls the low-level handlers by throwing an event to registered listeners. These objects can then decide whether to take appropriate steps like sending a message to the support team, or to popup a dialog window to inform the user about the current situation.

Since the original logsurfer turned out to be hardly configurable, this class allows for much easier configuration. In the simplest case you can set a simple rule that reacts on a single log entry (line).

Since:

1.5

Version:

$Revision: 1.8 $, $Date: 2012/12/28 11:44:24 $

Author:

Axel Schwolow

Constructor Summary

Constructors

Constructor and Description
LogMonitorHandler() Constructor method for i18n purposes only.
LogMonitorHandler(LogMonitor monitor) Constructor method for the log monitor.

Method Summary

Methods

Modifier and Type	Method and Description
void	close() Close the Handler and free all associated resources.
void	flush() Flush any buffered output.
void	publish(java.util.logging.LogRecord record) Analyzes the incoming log messages for special patterns and implements the monitoring.

Methods inherited from class java.util.logging.Handler

getEncoding, getErrorManager, getFilter, getFormatter, getLevel, isLoggable, reportError, setEncoding, setErrorManager, setFilter, setFormatter, setLevel

Methods inherited from class java.lang.Object

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

Constructor Detail

LogMonitorHandler

public LogMonitorHandler()
                  throws java.lang.InstantiationException

Constructor method for i18n purposes only.

Can only be used if beans design time is set (e.g. by external tools like the I18NExtractor).

Throws:

java.lang.InstantiationException - Error indication

Since:

1.6

LogMonitorHandler

public LogMonitorHandler(LogMonitor monitor)

Constructor method for the log monitor.

Parameters:

monitor - The instance doing the log monitoring

Method Detail

publish

public void publish(java.util.logging.LogRecord record)

Analyzes the incoming log messages for special patterns and implements the monitoring.

Specified by:

publish in class java.util.logging.Handler

Parameters:

record - Log message to be monitored.

close

public void close()

Close the Handler and free all associated resources.

Specified by:

close in class java.util.logging.Handler

flush

public void flush()

Flush any buffered output.

Specified by:

flush in class java.util.logging.Handler