Package org.terracotta.utilities.io

Class FilesSupport.PathHolder

java.lang.Object

org.terracotta.utilities.io.FilesSupport.PathHolder

All Implemented Interfaces:

AutoCloseable

Enclosing class:

FilesSupport

private static class FilesSupport.PathHolder
extends Object
implements AutoCloseable

Support class to open or lock a file for file operation impact assessment.

Although this class has "support" for opening a directory, there appears to be no reliable means in Java of opening a directory and observing the impact on other file operations.

Field Summary

Fields

Modifier and Type	Field	Description
private final Phaser	barrier
private static final org.slf4j.Logger	LOGGER
private final AtomicBoolean	started
private final Thread	thread

Constructor Summary

Constructors

Modifier	Constructor	Description
private	PathHolder(Path path, boolean lock)

Method Summary

Modifier and Type	Method	Description
void	close()	Closes and unlocks the file.
private void	holdDirectory(Path dir)
private void	holdFile(Path file)	Holds open a file for read.
private void	lockFile(Path file)	Holds a lock on a file.
void	start()	Open or lock the file and return.

Methods inherited from class java.lang.Object

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

Field Details

LOGGER

private static final org.slf4j.Logger LOGGER

thread

private final Thread thread

barrier

private final Phaser barrier

started

private final AtomicBoolean started

Constructor Details

PathHolder

private PathHolder(Path path,
 boolean lock)
            throws IOException

Throws:

IOException

Method Details

holdFile

private void holdFile(Path file)

Holds open a file for read.

Parameters:

file - the file path to hold open

lockFile

private void lockFile(Path file)

Holds a lock on a file.

Parameters:

file - the file path to lock

holdDirectory

private void holdDirectory(Path dir)

start

public void start()

Open or lock the file and return. The file remains opened or locked until close() is called.

close

public void close()

Closes and unlocks the file.

Specified by:

close in interface AutoCloseable