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

Class IOMonitorAdapter

java.lang.Object

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

All Implemented Interfaces:

IOMonitor

Direct Known Subclasses:

DiskCacheIOMonitor, IOTraceMonitor, MetricsIOMonitor, RedisCacheIOMonitor

public class IOMonitorAdapter
extends Object
implements IOMonitor

A void implementation of the IOMonitor. Can be used for the testing purposes or for the extension.

Constructor Summary

Constructors

Constructor	Description
IOMonitorAdapter()

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.

Methods inherited from class java.lang.Object

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

Constructor Detail

IOMonitorAdapter

public IOMonitorAdapter()

Method Detail

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.