org.apache.accumulo.server.watcher

Class MonitorLog4jWatcher

java.lang.Object

java.lang.Thread

org.apache.log4j.helpers.FileWatchdog

org.apache.accumulo.server.watcher.MonitorLog4jWatcher

All Implemented Interfaces:

Runnable, org.apache.zookeeper.Watcher

public class MonitorLog4jWatcher
extends org.apache.log4j.helpers.FileWatchdog
implements org.apache.zookeeper.Watcher

Watcher that updates the monitor's log4j port from ZooKeeper in a system property

Nested Class Summary

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

Thread.State, Thread.UncaughtExceptionHandler

Nested classes/interfaces inherited from interface org.apache.zookeeper.Watcher

org.apache.zookeeper.Watcher.Event

Field Summary

Fields

Modifier and Type	Field and Description
protected String	path

Fields inherited from class org.apache.log4j.helpers.FileWatchdog

DEFAULT_DELAY, delay, filename

Fields inherited from class java.lang.Thread

MAX_PRIORITY, MIN_PRIORITY, NORM_PRIORITY

Constructor Summary

Constructors

Constructor and Description
MonitorLog4jWatcher(String instance, String filename)

Method Summary

Modifier and Type	Method and Description
void	doOnChange()
void	process(org.apache.zookeeper.WatchedEvent event)
void	run()
protected void	updateMonitorLog4jLocation() Read the host and port information for the Monitor's log4j socket and update the system properties so that, on logger refresh, it sees the new information.

Methods inherited from class org.apache.log4j.helpers.FileWatchdog

checkAndConfigure, setDelay

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

Field Detail

path

protected String path

Constructor Detail

MonitorLog4jWatcher

public MonitorLog4jWatcher(String instance,
                           String filename)

Method Detail

run

public void run()

Specified by:

run in interface Runnable

Overrides:

run in class org.apache.log4j.helpers.FileWatchdog

doOnChange

public void doOnChange()

Specified by:

doOnChange in class org.apache.log4j.helpers.FileWatchdog

process

public void process(org.apache.zookeeper.WatchedEvent event)

Specified by:

process in interface org.apache.zookeeper.Watcher

updateMonitorLog4jLocation

protected void updateMonitorLog4jLocation()

Read the host and port information for the Monitor's log4j socket and update the system properties so that, on logger refresh, it sees the new information.