Package org.forgerock.audit.events.handlers.writers

Class RotatableWriter

java.lang.Object

org.forgerock.audit.events.handlers.writers.RotatableWriter

All Implemented Interfaces:

TextWriter, RotatableObject

public class RotatableWriter
extends Object
implements TextWriter, RotatableObject

Supports file rotation and retention.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static interface	RotatableWriter.RolloverLifecycleHook	Callback hooks to allow custom action to be taken before and after the checks for rotation and retention is performed.

Nested classes/interfaces inherited from interface org.forgerock.audit.events.handlers.writers.TextWriter

TextWriter.Stream

Field Summary

Fields

Modifier and Type	Field	Description
static final RotatableWriter.RolloverLifecycleHook	NOOP_ROLLOVER_LIFECYCLE_HOOK	A RolloverLifecycleHook that does nothing.

Constructor Summary

Constructors

Constructor	Description
RotatableWriter(File file, FileBasedEventHandlerConfiguration configuration, boolean append)	Constructs a RotatableWriter given an initial file to manage rotation/retention, and a FileBasedEventHandlerConfiguration.
RotatableWriter(File file, FileBasedEventHandlerConfiguration configuration, boolean append, RotatableWriter.RolloverLifecycleHook rolloverLifecycleHook)	Constructs a RotatableWriter given an initial file to manage rotation/retention, a a FileBasedEventHandlerConfiguration and a RotatableWriter.RolloverLifecycleHook.

Method Summary

Modifier and Type	Method	Description
void	close()	Closes the rotatable file.
void	flush()	Flushes any buffered contents of the output stream.
boolean	forceRotation()	Forces a rotation of the writer.
long	getBytesWritten()	Retrieves the number of bytes written by this writer.
OffsetDateTime	getLastRotationTime()	Retrieves the last time the file was rotated.
void	registerRotationHooks(RotationHooks rotationHooks)	Registers hooks into the rotation process.
boolean	rotateIfNeeded()	Rotate the log file if any of the configured rotation policies determine that rotation is required.
void	shutdown()	Releases any resources held by the writer.
void	write(String str)	Writes some text to the output stream.

Methods inherited from class java.lang.Object

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

Field Details

NOOP_ROLLOVER_LIFECYCLE_HOOK

public static final RotatableWriter.RolloverLifecycleHook NOOP_ROLLOVER_LIFECYCLE_HOOK

A RolloverLifecycleHook that does nothing.

Constructor Details

RotatableWriter

public RotatableWriter(File file,
 FileBasedEventHandlerConfiguration configuration,
 boolean append)
                throws IOException

Constructs a RotatableWriter given an initial file to manage rotation/retention, and a FileBasedEventHandlerConfiguration.

Parameters:

file - The initial file to manage rotation/retention.

configuration - The configuration of the rotation and retention policies.

append - Whether to append to the rotatable file or not.

Throws:

IOException - If a problem occurs.

RotatableWriter

public RotatableWriter(File file,
 FileBasedEventHandlerConfiguration configuration,
 boolean append,
 RotatableWriter.RolloverLifecycleHook rolloverLifecycleHook)
                throws IOException

Constructs a RotatableWriter given an initial file to manage rotation/retention, a a FileBasedEventHandlerConfiguration and a RotatableWriter.RolloverLifecycleHook.

Parameters:

file - The initial file to manage rotation/retention.

configuration - The configuration of the rotation and retention policies.

append - Whether to append to the rotatable file or not.

rolloverLifecycleHook - Hook to use before and after rotation/retention checks.

Throws:

IOException - If a problem occurs.

Method Details

rotateIfNeeded

public boolean rotateIfNeeded()
                       throws IOException

Rotate the log file if any of the configured rotation policies determine that rotation is required.

Specified by:

rotateIfNeeded in interface RotatableObject

Returns:

true if rotation took place.

Throws:

IOException - If unable to rotate the log file.

getBytesWritten

public long getBytesWritten()

Description copied from interface: TextWriter

Retrieves the number of bytes written by this writer.

Specified by:

getBytesWritten in interface RotatableObject

Specified by:

getBytesWritten in interface TextWriter

Returns:

the number of bytes written by this writer.

getLastRotationTime

public OffsetDateTime getLastRotationTime()

Description copied from interface: RotatableObject

Retrieves the last time the file was rotated. If a file rotation never occurred, this value will be the time the server started.

Specified by:

getLastRotationTime in interface RotatableObject

Returns:

The last time file rotation occurred.

close

public void close()
           throws IOException

Description copied from interface: RotatableObject

Closes the rotatable file.

Specified by:

close in interface RotatableObject

Throws:

IOException - If an exception occurs while closing.

shutdown

public void shutdown()

Description copied from interface: TextWriter

Releases any resources held by the writer.

Specified by:

shutdown in interface TextWriter

registerRotationHooks

public void registerRotationHooks(RotationHooks rotationHooks)

Description copied from interface: RotatableObject

Registers hooks into the rotation process.

Specified by:

registerRotationHooks in interface RotatableObject

Parameters:

rotationHooks - The RotationHooks into the rotation process.

write

public void write(String str)
           throws IOException

Description copied from interface: TextWriter

Writes some text to the output stream.

Specified by:

write in interface TextWriter

Parameters:

str - The text to write

Throws:

IOException - If a problem occurs.

forceRotation

public boolean forceRotation()
                      throws IOException

Forces a rotation of the writer.

Returns:

true if rotation was done, false otherwise.

Throws:

IOException - If an error occurs

flush

public void flush()
           throws IOException

Description copied from interface: TextWriter

Flushes any buffered contents of the output stream.

Specified by:

flush in interface TextWriter

Throws:

IOException - If a problem occurs.