Package org.apache.jackrabbit.oak.segment.spi.monitor

Class CompositeIOMonitor

java.lang.Object

org.apache.jackrabbit.oak.segment.spi.monitor.CompositeIOMonitor

All Implemented Interfaces:

IOMonitor

public class CompositeIOMonitor
extends Object
implements IOMonitor

This IOMonitor instance delegates all calls to all IOMonitor instances registered.

Constructor Summary

Constructors

Constructor	Description
CompositeIOMonitor()	Create a new empty CompositeIOMonitor instance.
CompositeIOMonitor(@NotNull Iterable<? extends IOMonitor> ioMonitors)	Create a new CompositeIOMonitor instance delegating the passed ioMonitors

Method Summary

Modifier and Type	Method	Description
void	afterSegmentRead(File file, long msb, long lsb, int length, long elapsed)	Called after a segment is read from the file system.
void	afterSegmentWrite(File file, long msb, long lsb, int length, long elapsed)	Called after a segment is written to the file system.
void	beforeSegmentRead(File file, long msb, long lsb, int length)	Called before a segment is read from the file system.
void	beforeSegmentWrite(File file, long msb, long lsb, int length)	Called before a segment is written to the file system.
@NotNull Registration	registerIOMonitor(@NotNull IOMonitor ioMonitor)	Register a IOMonitor instance to which this CompositeIOMonitor will delegate all its calls until Registration.unregister() is called on the return Registration.

Methods inherited from class java.lang.Object

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

Constructor Detail

CompositeIOMonitor

public CompositeIOMonitor(@NotNull
                          @NotNull Iterable<? extends IOMonitor> ioMonitors)

Create a new CompositeIOMonitor instance delegating the passed ioMonitors

Parameters:

ioMonitors - IOMonitor instances to delegate to

CompositeIOMonitor

public CompositeIOMonitor()

Create a new empty CompositeIOMonitor instance.

Method Detail

registerIOMonitor

@NotNull
public @NotNull Registration registerIOMonitor(@NotNull
                                               @NotNull IOMonitor ioMonitor)

Register a IOMonitor instance to which this CompositeIOMonitor will delegate all its calls until Registration.unregister() is called on the return Registration.

Parameters:

ioMonitor - IOMonitor to delegate to

Returns:

a Registration for ioMonitor.

beforeSegmentRead

public void beforeSegmentRead(File file,
                              long msb,
                              long lsb,
                              int length)

Description copied from interface: IOMonitor

Called before a segment is read from the file system.

Specified by:

beforeSegmentRead in interface IOMonitor

Parameters:

file - File containing the segment.

msb - Most significant bits of the segment ID.

lsb - Least significant bits of the segment ID.

length - Size of the segment.

afterSegmentRead

public void afterSegmentRead(File file,
                             long msb,
                             long lsb,
                             int length,
                             long elapsed)

Description copied from interface: IOMonitor

Called after a segment is read from the file system. This is called only in case of successful operations.

Specified by:

afterSegmentRead in interface IOMonitor

Parameters:

file - File containing the segment.

msb - Most significant bits of the segment ID.

lsb - Least significant bits of the segment ID.

length - Size of the segment.

elapsed - Time spent by the read operation, in nanoseconds.

beforeSegmentWrite

public void beforeSegmentWrite(File file,
                               long msb,
                               long lsb,
                               int length)

Description copied from interface: IOMonitor

Called before a segment is written to the file system.

Specified by:

beforeSegmentWrite in interface IOMonitor

Parameters:

file - File containing the segment.

msb - Most significant bits of the segment ID.

lsb - Least significant bits of the segment ID.

length - Size of the segment.

afterSegmentWrite

public void afterSegmentWrite(File file,
                              long msb,
                              long lsb,
                              int length,
                              long elapsed)

Description copied from interface: IOMonitor

Called after a segment is written to the file system. This is called only in case of successful operations.

Specified by:

afterSegmentWrite in interface IOMonitor

Parameters:

file - File containing the segment.

msb - Most significant bits of the segment ID.

lsb - Least significant bits of the segment ID.

length - Size of the segment.

elapsed - Time spent by the write operation, in nanoseconds.