org.apache.solr.core.backup.repository

Class HdfsBackupRepository

java.lang.Object

org.apache.solr.core.backup.repository.HdfsBackupRepository

All Implemented Interfaces:

Closeable, AutoCloseable, BackupRepository, NamedListInitializedPlugin

public class HdfsBackupRepository
extends Object
implements BackupRepository

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.solr.core.backup.repository.BackupRepository

BackupRepository.PathType

Constructor Summary

Constructors

Constructor and Description
HdfsBackupRepository()

Method Summary

Methods

Modifier and Type	Method and Description
void	close()
void	copyFileFrom(Directory sourceDir, String fileName, URI dest) Copy a file from specified sourceDir to the destination repository (i.e.
void	copyFileTo(URI sourceRepo, String fileName, Directory dest) Copy a file from specified sourceRepo to the destination directory (i.e.
void	createDirectory(URI path) This method creates a directory at the specified path.
OutputStream	createOutput(URI path) This method returns a OutputStream instance for the specified path
URI	createURI(String... pathComponents) This method creates a URI using the specified path components (as method arguments).
void	deleteDirectory(URI path) This method deletes a directory at the specified path.
boolean	exists(URI path) This method checks if the specified path exists in this repository.
<T> T	getConfigProperty(String name) This method returns the value of the specified configuration property.
BackupRepository.PathType	getPathType(URI path) This method returns the type of a specified path
void	init(NamedList args)
String[]	listAll(URI path) This method returns all the entries (files and directories) in the specified directory.
IndexInput	openInput(URI dirPath, String fileName, IOContext ctx) This method returns a Lucene input stream reading an existing file.

Methods inherited from class java.lang.Object

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

Constructor Detail

HdfsBackupRepository

public HdfsBackupRepository()

Method Detail

init

public void init(NamedList args)

Specified by:

init in interface NamedListInitializedPlugin

close

public void close()
           throws IOException

Specified by:

close in interface Closeable

Specified by:

close in interface AutoCloseable

Throws:

IOException

getConfigProperty

public <T> T getConfigProperty(String name)

Description copied from interface: BackupRepository

This method returns the value of the specified configuration property.

Specified by:

getConfigProperty in interface BackupRepository

createURI

public URI createURI(String... pathComponents)

Description copied from interface: BackupRepository

This method creates a URI using the specified path components (as method arguments).

Specified by:

createURI in interface BackupRepository

Parameters:

pathComponents - The directory (or file-name) to be included in the URI.

Returns:

A URI containing absolute path

exists

public boolean exists(URI path)
               throws IOException

Description copied from interface: BackupRepository

This method checks if the specified path exists in this repository.

Specified by:

exists in interface BackupRepository

Parameters:

path - The path whose existence needs to be checked.

Returns:

if the specified path exists in this repository.

Throws:

IOException - in case of errors

getPathType

public BackupRepository.PathType getPathType(URI path)
                                      throws IOException

Description copied from interface: BackupRepository

This method returns the type of a specified path

Specified by:

getPathType in interface BackupRepository

Parameters:

path - The path whose type needs to be checked.

Returns:

the BackupRepository.PathType for the specified path

Throws:

IOException - in case of errors

listAll

public String[] listAll(URI path)
                 throws IOException

Description copied from interface: BackupRepository

This method returns all the entries (files and directories) in the specified directory.

Specified by:

listAll in interface BackupRepository

Parameters:

path - The directory path

Returns:

an array of strings, one for each entry in the directory

Throws:

IOException - in case of errors

openInput

public IndexInput openInput(URI dirPath,
                   String fileName,
                   IOContext ctx)
                     throws IOException

Description copied from interface: BackupRepository

This method returns a Lucene input stream reading an existing file.

Specified by:

openInput in interface BackupRepository

Parameters:

dirPath - The parent directory of the file to be read

fileName - The name of the file to be read

ctx - the Lucene IO context

Returns:

Lucene IndexInput reference

Throws:

IOException - in case of errors

createOutput

public OutputStream createOutput(URI path)
                          throws IOException

Description copied from interface: BackupRepository

This method returns a OutputStream instance for the specified path

Specified by:

createOutput in interface BackupRepository

Parameters:

path - The path for which OutputStream needs to be created

Returns:

OutputStream instance for the specified path

Throws:

IOException - in case of errors

createDirectory

public void createDirectory(URI path)
                     throws IOException

Description copied from interface: BackupRepository

This method creates a directory at the specified path.

Specified by:

createDirectory in interface BackupRepository

Parameters:

path - The path where the directory needs to be created.

Throws:

IOException - in case of errors

deleteDirectory

public void deleteDirectory(URI path)
                     throws IOException

Description copied from interface: BackupRepository

This method deletes a directory at the specified path.

Specified by:

deleteDirectory in interface BackupRepository

Parameters:

path - The path referring to the directory to be deleted.

Throws:

IOException - in case of errors

copyFileFrom

public void copyFileFrom(Directory sourceDir,
                String fileName,
                URI dest)
                  throws IOException

Description copied from interface: BackupRepository

Copy a file from specified sourceDir to the destination repository (i.e. backup).

Specified by:

copyFileFrom in interface BackupRepository

Parameters:

sourceDir - The source directory hosting the file to be copied.

fileName - The name of the file to by copied

dest - The destination backup location.

Throws:

IOException - in case of errors

copyFileTo

public void copyFileTo(URI sourceRepo,
              String fileName,
              Directory dest)
                throws IOException

Description copied from interface: BackupRepository

Copy a file from specified sourceRepo to the destination directory (i.e. restore).

Specified by:

copyFileTo in interface BackupRepository

Parameters:

sourceRepo - The source URI hosting the file to be copied.

fileName - The name of the file to by copied

dest - The destination where the file should be copied.

Throws:

IOException - in case of errors.