Package org.apache.camel.support

Class FileWatcherResourceReloadStrategy

java.lang.Object

org.apache.camel.support.service.BaseService

org.apache.camel.support.service.ServiceSupport

org.apache.camel.support.ResourceReloadStrategySupport

org.apache.camel.support.FileWatcherResourceReloadStrategy

All Implemented Interfaces:

AutoCloseable, org.apache.camel.CamelContextAware, org.apache.camel.Service, org.apache.camel.ShutdownableService, org.apache.camel.spi.HasCamelContext, org.apache.camel.spi.ReloadStrategy, org.apache.camel.spi.ResourceReloadStrategy, org.apache.camel.StatefulService, org.apache.camel.StaticService, org.apache.camel.SuspendableService

Direct Known Subclasses:

RouteWatcherReloadStrategy

@ManagedResource(description="Managed FileWatcherResourceReloadStrategy")
public class FileWatcherResourceReloadStrategy
extends ResourceReloadStrategySupport

A file based ResourceReloadStrategy which watches a file folder for modified files and reload on file changes.

This implementation uses the JDK WatchService to watch for when files are created or modified. Mac OS X users should be noted the osx JDK does not support native file system changes and therefore the watch service is much slower than on Linux or Windows systems.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
protected class	FileWatcherResourceReloadStrategy.WatchFileChangesTask	Background task which watches for file changes

Field Summary

Fields inherited from class org.apache.camel.support.service.BaseService

BUILT, FAILED, INITIALIZED, INITIALIZING, lock, NEW, SHUTDOWN, SHUTTING_DOWN, STARTED, STARTING, status, STOPPED, STOPPING, SUSPENDED, SUSPENDING

Constructor Summary

Constructors

Constructor	Description
FileWatcherResourceReloadStrategy()
FileWatcherResourceReloadStrategy(String directory)
FileWatcherResourceReloadStrategy(String directory, boolean isRecursive)

Method Summary

Modifier and Type	Method	Description
protected void	doStart()
protected void	doStop()
FileFilter	getFileFilter()
String	getFolder()
boolean	isRecursive()
boolean	isRunning()
void	onReload(Object source)
void	setFileFilter(FileFilter fileFilter)	To use a custom filter for accepting files.
void	setFolder(String folder)
void	setPollTimeout(long pollTimeout)	Sets the poll timeout in millis.
void	setRecursive(boolean isRecursive)
void	setScheduler(boolean scheduler)
protected String	startupMessage(File dir)

Methods inherited from class org.apache.camel.support.ResourceReloadStrategySupport

getCamelContext, getFailedCounter, getLastError, getReloadCounter, getResourceReload, incFailedCounter, incSucceededCounter, lastErrorMessage, resetCounters, setCamelContext, setFailed, setLastError, setResourceReload, setSucceeded

Methods inherited from class org.apache.camel.support.service.BaseService

build, doBuild, doFail, doInit, doLifecycleChange, doResume, doShutdown, doSuspend, fail, getInternalLock, getStatus, init, isBuild, isInit, isNew, isRunAllowed, isShutdown, isStarted, isStarting, isStartingOrStarted, isStopped, isStopping, isStoppingOrStopped, isSuspended, isSuspending, isSuspendingOrSuspended, resume, shutdown, start, stop, suspend

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.camel.Service

build, close, init, start, stop

Methods inherited from interface org.apache.camel.ShutdownableService

shutdown

Methods inherited from interface org.apache.camel.StatefulService

getStatus, isRunAllowed, isStarted, isStarting, isStopped, isStopping, isSuspending

Methods inherited from interface org.apache.camel.SuspendableService

isSuspended, resume, suspend

Constructor Details

FileWatcherResourceReloadStrategy

public FileWatcherResourceReloadStrategy()

FileWatcherResourceReloadStrategy

public FileWatcherResourceReloadStrategy(String directory)

FileWatcherResourceReloadStrategy

public FileWatcherResourceReloadStrategy(String directory,
 boolean isRecursive)

Method Details

setFolder

public void setFolder(String folder)

setRecursive

public void setRecursive(boolean isRecursive)

setScheduler

public void setScheduler(boolean scheduler)

setPollTimeout

public void setPollTimeout(long pollTimeout)

Sets the poll timeout in millis. The default value is 2000.

getFolder

@ManagedAttribute(description="Folder being watched")
public String getFolder()

isRecursive

@ManagedAttribute(description="Whether the reload strategy watches directory recursively")
public boolean isRecursive()

isRunning

@ManagedAttribute(description="Whether the watcher is running")
public boolean isRunning()

getFileFilter

public FileFilter getFileFilter()

setFileFilter

public void setFileFilter(FileFilter fileFilter)

To use a custom filter for accepting files.

onReload

public void onReload(Object source)

doStart

protected void doStart()
                throws Exception

Overrides:

doStart in class org.apache.camel.support.service.BaseService

Throws:

Exception

startupMessage

protected String startupMessage(File dir)

doStop

protected void doStop()
               throws Exception

Overrides:

doStop in class org.apache.camel.support.service.BaseService

Throws:

Exception