Package org.jboss.logmanager

Class ExtHandler

java.lang.Object

java.util.logging.Handler

org.jboss.logmanager.ExtHandler

All Implemented Interfaces:

Closeable, Flushable, AutoCloseable, FlushableCloseable

Direct Known Subclasses:

AsyncHandler, DelayedHandler, NullHandler, QueueHandler, SocketHandler, SyslogHandler, WriterHandler

public abstract class ExtHandler
extends Handler
implements FlushableCloseable

An extended logger handler. Use this class as a base class for log handlers which require ExtLogRecord instances.

Field Summary

Fields

Modifier and Type	Field	Description
protected Handler[]	handlers	The sub-handlers for this handler.
protected static org.jboss.logmanager.AtomicArray<ExtHandler,Handler>	handlersUpdater	The atomic updater for the handlers field.

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	ExtHandler()	Construct a new instance.

Method Summary

Modifier and Type	Method	Description
void	addHandler(Handler handler)	Add a sub-handler to this handler.
Handler[]	clearHandlers()	A convenience method to atomically get and clear all sub-handlers.
void	close()	Close all child handlers.
protected void	doPublish(ExtLogRecord record)	Do the actual work of publication; the record will have been filtered already.
void	flush()	Flush all child handlers.
Handler[]	getHandlers()	Get a copy of the sub-handlers array.
boolean	isAutoFlush()	Determine if this handler will auto-flush.
boolean	isCallerCalculationRequired()	Indicates whether or not the formatter associated with this handler or a formatter from a child handler requires the caller to be calculated.
boolean	isCloseChildren()	Indicates whether or not children handlers should be closed when this handler is closed.
boolean	isEnabled()	Determine if the handler is enabled.
void	publish(LogRecord record)
void	publish(ExtLogRecord record)	Publish an ExtLogRecord.
protected void	publishToNestedHandlers(ExtLogRecord record)	Publish a log record to each nested handler.
void	removeHandler(Handler handler)	Remove a sub-handler from this handler.
protected void	reportError(String msg, Exception ex, int code)
static void	reportError(Handler handler, String msg, Exception ex, int code)	Report an error using a handler's specific error manager, if any.
void	setAutoFlush(boolean autoFlush)	Change the autoflush setting for this handler.
void	setCloseChildren(boolean closeChildren)	Sets whether or not children handlers should be closed when this handler is closed.
void	setEnabled(boolean enabled)	Enables or disables the handler based on the value passed in.
void	setEncoding(String encoding)
void	setErrorManager(ErrorManager em)
void	setFilter(Filter newFilter)
void	setFormatter(Formatter newFormatter)
Handler[]	setHandlers(Handler[] newHandlers)	A convenience method to atomically get and replace the sub-handler array.
void	setLevel(Level newLevel)

Methods inherited from class java.util.logging.Handler

getEncoding, getErrorManager, getFilter, getFormatter, getLevel, isLoggable

Methods inherited from class java.lang.Object

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

Field Detail

handlers

protected volatile Handler[] handlers

The sub-handlers for this handler. May only be updated using the handlersUpdater atomic updater. The array instance should not be modified (treat as immutable).

handlersUpdater

protected static final org.jboss.logmanager.AtomicArray<ExtHandler,Handler> handlersUpdater

The atomic updater for the handlers field.

Constructor Detail

ExtHandler

protected ExtHandler()

Construct a new instance.

Method Detail

publish

public void publish(LogRecord record)

Specified by:

publish in class Handler

publish

public void publish(ExtLogRecord record)

Publish an ExtLogRecord.

The logging request was made initially to a Logger object, which initialized the LogRecord and forwarded it here.

The ExtHandler is responsible for formatting the message, when and if necessary. The formatting should include localization.

Parameters:

record - the log record to publish

publishToNestedHandlers

protected void publishToNestedHandlers(ExtLogRecord record)

Publish a log record to each nested handler.

Parameters:

record - the log record to publish

doPublish

protected void doPublish(ExtLogRecord record)

Do the actual work of publication; the record will have been filtered already. The default implementation does nothing except to flush if the autoFlush property is set to true; if this behavior is to be preserved in a subclass then this method should be called after the record is physically written.

Parameters:

record - the log record to publish

addHandler

public void addHandler(Handler handler)

Add a sub-handler to this handler. Some handler types do not utilize sub-handlers.

Parameters:

handler - the handler to add

removeHandler

public void removeHandler(Handler handler)
                   throws SecurityException

Remove a sub-handler from this handler. Some handler types do not utilize sub-handlers.

Parameters:

handler - the handler to remove

Throws:

SecurityException

getHandlers

public Handler[] getHandlers()

Get a copy of the sub-handlers array. Since the returned value is a copy, it may be freely modified.

Returns:

a copy of the sub-handlers array

clearHandlers

public Handler[] clearHandlers()
                        throws SecurityException

A convenience method to atomically get and clear all sub-handlers.

Returns:

the old sub-handler array

Throws:

SecurityException

setHandlers

public Handler[] setHandlers(Handler[] newHandlers)
                      throws SecurityException

A convenience method to atomically get and replace the sub-handler array.

Parameters:

newHandlers - the new sub-handlers

Returns:

the old sub-handler array

Throws:

SecurityException

isAutoFlush

public boolean isAutoFlush()

Determine if this handler will auto-flush.

Returns:

true if auto-flush is enabled

setAutoFlush

public void setAutoFlush(boolean autoFlush)
                  throws SecurityException

Change the autoflush setting for this handler.

Parameters:

autoFlush - true to automatically flush after each write; false otherwise

Throws:

SecurityException

setEnabled

public final void setEnabled(boolean enabled)
                      throws SecurityException

Enables or disables the handler based on the value passed in.

Parameters:

enabled - true to enable the handler or false to disable the handler.

Throws:

SecurityException

isEnabled

public final boolean isEnabled()

Determine if the handler is enabled.

Returns:

true if the handler is enabled, otherwise false.

isCloseChildren

public boolean isCloseChildren()

Indicates whether or not children handlers should be closed when this handler is closed.

Returns:

true if the children handlers should be closed when this handler is closed, false if children handlers should not be closed when this handler is closed

setCloseChildren

public void setCloseChildren(boolean closeChildren)

Sets whether or not children handlers should be closed when this handler is closed.

Parameters:

closeChildren - true if all children handlers should be closed when this handler is closed, false if children handlers will not be closed when this handler is closed

flush

public void flush()

Flush all child handlers.

Specified by:

flush in interface Flushable

Specified by:

flush in class Handler

close

public void close()
           throws SecurityException

Close all child handlers.

Specified by:

close in interface AutoCloseable

Specified by:

close in interface Closeable

Specified by:

close in class Handler

Throws:

SecurityException

setFormatter

public void setFormatter(Formatter newFormatter)
                  throws SecurityException

Overrides:

setFormatter in class Handler

Throws:

SecurityException

setFilter

public void setFilter(Filter newFilter)
               throws SecurityException

Overrides:

setFilter in class Handler

Throws:

SecurityException

setEncoding

public void setEncoding(String encoding)
                 throws SecurityException,
                        UnsupportedEncodingException

Overrides:

setEncoding in class Handler

Throws:

SecurityException

UnsupportedEncodingException

setErrorManager

public void setErrorManager(ErrorManager em)

Overrides:

setErrorManager in class Handler

setLevel

public void setLevel(Level newLevel)
              throws SecurityException

Overrides:

setLevel in class Handler

Throws:

SecurityException

isCallerCalculationRequired

public boolean isCallerCalculationRequired()

Indicates whether or not the formatter associated with this handler or a formatter from a child handler requires the caller to be calculated.

Calculating the caller on a log record can be an expensive operation. Some handlers may be required to copy some data from the log record, but may not need the caller information. If the formatter is a ExtFormatter the ExtFormatter.isCallerCalculationRequired() is used to determine if calculation of the caller is required.

Returns:

true if the caller should be calculated, otherwise false if it can be skipped

See Also:

LogRecord.getSourceClassName(), ExtLogRecord.getSourceFileName(), ExtLogRecord.getSourceLineNumber(), LogRecord.getSourceMethodName()

reportError

protected void reportError(String msg,
                           Exception ex,
                           int code)

Overrides:

reportError in class Handler

reportError

public static void reportError(Handler handler,
                               String msg,
                               Exception ex,
                               int code)

Report an error using a handler's specific error manager, if any.

Parameters:

handler - the handler

msg - the error message

ex - the exception

code - the error code