Package com.arpnetworking.metrics.common.tailer

Class NoPositionStore

java.lang.Object

com.arpnetworking.metrics.common.tailer.NoPositionStore

All Implemented Interfaces:

PositionStore, Closeable, AutoCloseable

public class NoPositionStore
extends Object
implements PositionStore

A PositionStore that always returns absent.

Author:

Brandon Arp (brandon dot arp at inscopemetrics dot io)

Constructor Summary

Constructors

Constructor	Description
NoPositionStore()

Method Summary

Modifier and Type	Method	Description
void	close()
Optional<Long>	getPosition(String identifier)	Get the read location in the file identified by a hash.
void	setPosition(String identifier, long position)	Update the read offset from the beginning of the file for the specified file identifier.

Methods inherited from class java.lang.Object

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

Constructor Details

NoPositionStore

public NoPositionStore()

Method Details

getPosition

public Optional<Long> getPosition(String identifier)

Description copied from interface: PositionStore

Get the read location in the file identified by a hash.

Specified by:

getPosition in interface PositionStore

Parameters:

identifier - unique identifier for the file.

Returns:

Optional.absent if the file was not found, otherwise a byte offset

setPosition

public void setPosition(String identifier,
 long position)

Description copied from interface: PositionStore

Update the read offset from the beginning of the file for the specified file identifier.

Specified by:

setPosition in interface PositionStore

Parameters:

identifier - unique identifier for the file.

position - the new read offset from the beginning of the file in bytes.

close

public void close()
           throws IOException

Specified by:

close in interface AutoCloseable

Specified by:

close in interface Closeable

Throws:

IOException