Package org.apache.log4j.helpers
Class FileWatchdog
- java.lang.Object
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- java.lang.Thread
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- org.apache.log4j.helpers.FileWatchdog
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- All Implemented Interfaces:
java.lang.Runnable
- Direct Known Subclasses:
PropertyWatchdog
,XMLWatchdog
public abstract class FileWatchdog extends java.lang.Thread
Check every now and then that a certain file has not changed. If it has, then call thedoOnChange()
method.- Since:
- version 0.9.1
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Field Summary
Fields Modifier and Type Field Description static long
DEFAULT_DELAY
The default delay between every file modification check, set to 60 seconds.protected long
delay
The delay to observe between every check.(package private) java.io.File
file
protected java.lang.String
filename
The name of the file to observe for changes.(package private) boolean
interrupted
(package private) long
lastModif
(package private) boolean
warnedAlready
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Constructor Summary
Constructors Modifier Constructor Description protected
FileWatchdog(java.lang.String filename)
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Method Summary
All Methods Instance Methods Abstract Methods Concrete Methods Modifier and Type Method Description protected void
checkAndConfigure()
protected abstract void
doOnChange()
void
run()
void
setDelay(long delay)
Set the delay to observe between each check of the file changes.-
Methods inherited from class java.lang.Thread
activeCount, checkAccess, clone, countStackFrames, currentThread, dumpStack, enumerate, getAllStackTraces, getContextClassLoader, getDefaultUncaughtExceptionHandler, getId, getName, getPriority, getStackTrace, getState, getThreadGroup, getUncaughtExceptionHandler, holdsLock, interrupt, interrupted, isAlive, isDaemon, isInterrupted, join, join, join, onSpinWait, resume, setContextClassLoader, setDaemon, setDefaultUncaughtExceptionHandler, setName, setPriority, setUncaughtExceptionHandler, sleep, sleep, start, stop, suspend, toString, yield
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Field Detail
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DEFAULT_DELAY
public static final long DEFAULT_DELAY
The default delay between every file modification check, set to 60 seconds.- See Also:
- Constant Field Values
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filename
protected java.lang.String filename
The name of the file to observe for changes.
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delay
protected long delay
The delay to observe between every check. By default setDEFAULT_DELAY
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file
java.io.File file
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lastModif
long lastModif
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warnedAlready
boolean warnedAlready
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interrupted
boolean interrupted
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Method Detail
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setDelay
public void setDelay(long delay)
Set the delay to observe between each check of the file changes.
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doOnChange
protected abstract void doOnChange()
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checkAndConfigure
protected void checkAndConfigure()
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run
public void run()
- Specified by:
run
in interfacejava.lang.Runnable
- Overrides:
run
in classjava.lang.Thread
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