org.finra.herd.dao

Class Log4jOverridableConfigurer.Log4jDbWatchdog

java.lang.Object

java.lang.Thread

org.finra.herd.dao.Log4jOverridableConfigurer.Log4jDbWatchdog

All Implemented Interfaces:

Runnable

Enclosing class:

Log4jOverridableConfigurer

protected class Log4jOverridableConfigurer.Log4jDbWatchdog
extends Thread

An internally used watchdog thread that keeps querying the database to retrieve the Log4J configuration each time it wakes up. Each time it queries the configuration, it compares it to the previously read configuration and if any changes are present, the Log4J configuration is re-initialized. This is similar to what Log4J provides out of the box for configurations in files. Note that this thread will first sleep before it does anything so it is important that the caller first initializes Log4J before this thread is started.

Nested Class Summary

Nested classes/interfaces inherited from class java.lang.Thread

Thread.State, Thread.UncaughtExceptionHandler

Field Summary

Fields inherited from class java.lang.Thread

MAX_PRIORITY, MIN_PRIORITY, NORM_PRIORITY

Constructor Summary

Constructors

Constructor and Description
Log4jDbWatchdog(long refreshIntervalSeconds)

Method Summary

Modifier and Type	Method and Description
void	run() The main "run" method which gets invoked when this thread gets started.
void	setRefreshIntervalSeconds(long refreshIntervalSeconds) Sets the refresh interval in seconds.

Methods inherited from class java.lang.Thread

activeCount, checkAccess, clone, countStackFrames, currentThread, destroy, dumpStack, enumerate, getAllStackTraces, getContextClassLoader, getDefaultUncaughtExceptionHandler, getId, getName, getPriority, getStackTrace, getState, getThreadGroup, getUncaughtExceptionHandler, holdsLock, interrupt, interrupted, isAlive, isDaemon, isInterrupted, join, join, join, resume, setContextClassLoader, setDaemon, setDefaultUncaughtExceptionHandler, setName, setPriority, setUncaughtExceptionHandler, sleep, sleep, start, stop, stop, suspend, toString, yield

Methods inherited from class java.lang.Object

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

Constructor Detail

Log4jDbWatchdog

public Log4jDbWatchdog(long refreshIntervalSeconds)

Method Detail

setRefreshIntervalSeconds

public void setRefreshIntervalSeconds(long refreshIntervalSeconds)

Sets the refresh interval in seconds. Note that this is the time we will monitor for DB changes and not the time that Log4J will check for temporary file updates so an additional delay will be present before the DB changes will be applied.

Parameters:

refreshIntervalSeconds - the refresh interval.

run

public void run()

The main "run" method which gets invoked when this thread gets started.

Specified by:

run in interface Runnable

Overrides:

run in class Thread