org.gridgain.grid.spi.deployment.uri.scanners.file

Class GridUriDeploymentFileScanner

java.lang.Object

org.gridgain.grid.spi.deployment.uri.scanners.GridUriDeploymentScanner

org.gridgain.grid.spi.deployment.uri.scanners.file.GridUriDeploymentFileScanner

public class GridUriDeploymentFileScanner
extends GridUriDeploymentScanner

Scanner that processes all URIs with "file" scheme. Usually URI point to certain directory or file and scanner is in charge of watching all changes (file deletion, creation and so on) and sending notification to the listener about every change.

Constructor Summary

Constructors

Constructor and Description
GridUriDeploymentFileScanner(String gridName, URI uri, File deployDir, long freq, FilenameFilter filter, GridUriDeploymentScannerListener lsnr, org.gridgain.grid.logger.GridLogger log) Creates new instance of scanner with given name.

Method Summary

Methods

Modifier and Type	Method and Description
protected String	getFileUri(String name) Converts given file name to the URI with "file" scheme.
protected void	process() Handles changes in scanning directory by tracking files modification date.
String	toString()

Methods inherited from class org.gridgain.grid.spi.deployment.uri.scanners.GridUriDeploymentScanner

cancel, createTempFile, getDeployDirectory, getFilter, getFrequency, getListener, getLogger, getUri, isCancelled, isFirstScan, join, start

Methods inherited from class java.lang.Object

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

Constructor Detail

GridUriDeploymentFileScanner

public GridUriDeploymentFileScanner(String gridName,
                            URI uri,
                            File deployDir,
                            long freq,
                            FilenameFilter filter,
                            GridUriDeploymentScannerListener lsnr,
                            org.gridgain.grid.logger.GridLogger log)
                             throws org.gridgain.grid.spi.GridSpiException

Creates new instance of scanner with given name.

Parameters:

gridName - Grid name.

uri - URI which scanner should look after.

deployDir - Temporary deployment directory.

freq - Scan frequency.

filter - Found files filter.

lsnr - Scanner listener which should be notifier about changes.

log - Logger.

Throws:

org.gridgain.grid.spi.GridSpiException - Thrown if URI is null or is not a directory.

Method Detail

process

protected void process()

Handles changes in scanning directory by tracking files modification date. Checks files modification date against those one that was collected before and notifies listener about every changed or deleted file.

Specified by:

process in class GridUriDeploymentScanner

getFileUri

protected String getFileUri(String name)

Converts given file name to the URI with "file" scheme.

Overrides:

getFileUri in class GridUriDeploymentScanner

Parameters:

name - File name to be converted.

Returns:

File name with "file://" prefix.

toString

public String toString()

Overrides:

toString in class GridUriDeploymentScanner