Package org.apache.solr.core.backup.repository

Class DelegatingBackupRepository

java.lang.Object

org.apache.solr.core.backup.repository.DelegatingBackupRepository

All Implemented Interfaces:

Closeable, AutoCloseable, BackupRepository, NamedListInitializedPlugin

public class DelegatingBackupRepository
extends Object
implements BackupRepository

Delegates to another BackupRepository.

Nested Class Summary

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

BackupRepository.PathType

Field Summary

Fields

Modifier and Type	Field	Description
protected BackupRepository	delegate
static String	PARAM_DELEGATE_REPOSITORY_NAME

Constructor Summary

Constructors

Constructor	Description
DelegatingBackupRepository()

Method Summary

Modifier and Type	Method	Description
Checksum	checksum(org.apache.lucene.store.Directory dir, String fileName)	Get checksum of fileName at dir.
void	close()
void	copyFileFrom(org.apache.lucene.store.Directory sourceDir, String fileName, URI dest)	Copy a file from specified sourceDir to the destination repository (i.e.
void	copyFileTo(URI sourceRepo, String fileName, org.apache.lucene.store.Directory dest)	Copy a file from specified sourceRepo to the destination directory (i.e.
void	copyIndexFileFrom(org.apache.lucene.store.Directory sourceDir, String sourceFileName, URI destDir, String destFileName)	Copy an index file from specified sourceDir to the destination repository (i.e.
void	copyIndexFileFrom(org.apache.lucene.store.Directory sourceDir, String sourceFileName, org.apache.lucene.store.Directory destDir, String destFileName)	Copies an index file from a specified Directory to a destination Directory.
void	copyIndexFileTo(URI sourceRepo, String sourceFileName, org.apache.lucene.store.Directory dest, String destFileName)	Copy an index file from specified sourceRepo to the destination directory (i.e.
void	createDirectory(URI path)	This method creates a directory at the specified path.
URI	createDirectoryURI(String path)	This method returns the directory URI representation for the specified path.
OutputStream	createOutput(URI path)	This method returns a OutputStream instance for the specified path
URI	createURI(String path)	This method returns the URI representation for the specified path.
void	delete(URI path, Collection<String> files)	Delete files at path
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.
String	getBackupLocation(String override)	This method returns the location where the backup should be stored (or restored from).
<T> T	getConfigProperty(String name)	This method returns the value of the specified configuration property.
protected org.apache.solr.common.util.NamedList<?>	getDelegateInitArgs(org.apache.solr.common.util.NamedList<?> initArgs)
BackupRepository.PathType	getPathType(URI path)	This method returns the type of a specified path
String[]	listAll(URI path)	This method returns all the entries (files and directories) in the specified directory.
String[]	listAllOrEmpty(URI path)	List all files or directories directly under path.
org.apache.lucene.store.IndexInput	openInput(URI dirPath, String fileName, org.apache.lucene.store.IOContext ctx)	This method returns a Lucene input stream reading an existing file.
URI	resolve(URI baseUri, String... pathComponents)	This method resolves a URI using the specified path components (as method arguments).
URI	resolveDirectory(URI baseUri, String... pathComponents)	This method resolves a directory URI using the specified path components (as method arguments).
protected void	setDelegate(BackupRepository delegate)

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.solr.core.backup.repository.BackupRepository

copyFileNoChecksum, delete

Methods inherited from interface org.apache.solr.util.plugin.NamedListInitializedPlugin

init

Field Detail

PARAM_DELEGATE_REPOSITORY_NAME

public static final String PARAM_DELEGATE_REPOSITORY_NAME

See Also:

Constant Field Values

delegate

protected BackupRepository delegate

Constructor Detail

DelegatingBackupRepository

public DelegatingBackupRepository()

Method Detail

getDelegateInitArgs

protected org.apache.solr.common.util.NamedList<?> getDelegateInitArgs(org.apache.solr.common.util.NamedList<?> initArgs)

setDelegate

protected void setDelegate(BackupRepository delegate)

getBackupLocation

public String getBackupLocation(String override)

Description copied from interface: BackupRepository

This method returns the location where the backup should be stored (or restored from).

Specified by:

getBackupLocation in interface BackupRepository

Parameters:

override - The location parameter supplied by the user.

Returns:

If override is not null then return the same value Otherwise return the default configuration value for the CoreAdminParams.BACKUP_LOCATION parameter.

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 path)

Description copied from interface: BackupRepository

This method returns the URI representation for the specified path. Note - the specified path could be a fully qualified URI OR a relative path for a file-system.

Specified by:

createURI in interface BackupRepository

Parameters:

path - The path specified by the user.

Returns:

the URI representation of the user supplied value

createDirectoryURI

public URI createDirectoryURI(String path)

Description copied from interface: BackupRepository

This method returns the directory URI representation for the specified path. Note - the specified path could be a fully qualified URI OR a relative path for a file-system.

Specified by:

createDirectoryURI in interface BackupRepository

Parameters:

path - The path specified by the user.

Returns:

the URI representation of the user supplied value, ensured to look like a directory.

resolve

public URI resolve(URI baseUri,
                   String... pathComponents)

Description copied from interface: BackupRepository

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

Specified by:

resolve in interface BackupRepository

Parameters:

baseUri - The base URI to use for creating the path

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

Returns:

A URI containing absolute path

resolveDirectory

public URI resolveDirectory(URI baseUri,
                            String... pathComponents)

Description copied from interface: BackupRepository

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

Specified by:

resolveDirectory in interface BackupRepository

Parameters:

baseUri - The base URI to use for creating the path

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

Returns:

A URI containing absolute path, ensured to look like a directory

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 org.apache.lucene.store.IndexInput openInput(URI dirPath,
                                                    String fileName,
                                                    org.apache.lucene.store.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. If the directory already exist, this will be a no-op.

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(org.apache.lucene.store.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 be copied

dest - The destination backup location.

Throws:

IOException - in case of errors

copyFileTo

public void copyFileTo(URI sourceRepo,
                       String fileName,
                       org.apache.lucene.store.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 be copied

dest - The destination where the file should be copied.

Throws:

IOException - in case of errors.

listAllOrEmpty

public String[] listAllOrEmpty(URI path)

Description copied from interface: BackupRepository

List all files or directories directly under path.

Specified by:

listAllOrEmpty in interface BackupRepository

Returns:

an empty array in case of IOException

copyIndexFileFrom

public void copyIndexFileFrom(org.apache.lucene.store.Directory sourceDir,
                              String sourceFileName,
                              org.apache.lucene.store.Directory destDir,
                              String destFileName)
                       throws IOException

Description copied from interface: BackupRepository

Copies an index file from a specified Directory to a destination Directory.

Specified by:

copyIndexFileFrom in interface BackupRepository

Parameters:

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

sourceFileName - The name of the file to be copied

destDir - The destination directory.

Throws:

org.apache.lucene.index.CorruptIndexException - in case checksum of the file does not match with precomputed checksum stored at the end of the file

IOException

delete

public void delete(URI path,
                   Collection<String> files)
            throws IOException

Description copied from interface: BackupRepository

Delete files at path

Specified by:

delete in interface BackupRepository

Throws:

IOException

checksum

public Checksum checksum(org.apache.lucene.store.Directory dir,
                         String fileName)
                  throws IOException

Description copied from interface: BackupRepository

Get checksum of fileName at dir. This method only be called on Lucene index files

Specified by:

checksum in interface BackupRepository

Throws:

IOException

copyIndexFileFrom

public void copyIndexFileFrom(org.apache.lucene.store.Directory sourceDir,
                              String sourceFileName,
                              URI destDir,
                              String destFileName)
                       throws IOException

Description copied from interface: BackupRepository

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

Specified by:

copyIndexFileFrom in interface BackupRepository

Parameters:

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

sourceFileName - The name of the file to be copied

destDir - The destination backup location.

Throws:

IOException - in case of errors

org.apache.lucene.index.CorruptIndexException - in case checksum of the file does not match with precomputed checksum stored at the end of the file

copyIndexFileTo

public void copyIndexFileTo(URI sourceRepo,
                            String sourceFileName,
                            org.apache.lucene.store.Directory dest,
                            String destFileName)
                     throws IOException

Description copied from interface: BackupRepository

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

Specified by:

copyIndexFileTo in interface BackupRepository

Parameters:

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

dest - The destination where the file should be copied.

Throws:

IOException - in case of errors.

close

public void close()
           throws IOException

Specified by:

close in interface AutoCloseable

Specified by:

close in interface Closeable

Throws:

IOException