org.jclouds.filesystem.strategy.internal
Class FilesystemStorageStrategyImpl

java.lang.Object
  org.jclouds.filesystem.strategy.internal.FilesystemStorageStrategyImpl

All Implemented Interfaces:

FilesystemStorageStrategy

public class FilesystemStorageStrategyImpl
extends Object
implements FilesystemStorageStrategy

Author:

Alfredo "Rainbowbreeze" Morresi

Field Summary

protected String	baseDirectory
protected javax.inject.Provider<BlobBuilder>	blobBuilders
protected FilesystemBlobKeyValidator	filesystemBlobKeyValidator
protected FilesystemContainerNameValidator	filesystemContainerNameValidator
protected Logger	logger

Constructor Summary

protected

FilesystemStorageStrategyImpl(javax.inject.Provider<BlobBuilder> blobBuilders, String baseDir, FilesystemContainerNameValidator filesystemContainerNameValidator, FilesystemBlobKeyValidator filesystemBlobKeyValidator)

Method Summary

boolean	blobExists(String container, String key)
protected String	buildPathStartingFromBaseDir(String... pathTokens) Facility method used to concatenate path tokens normalizing separators
void	clearContainer(String container) Empty the directory of its content (files and subdirectories)
void	clearContainer(String container, ListContainerOptions options) Like FilesystemStorageStrategy.clearContainer(String) except you can use options to do things like recursive deletes, or clear at a different path than root.
boolean	containerExists(String container) Checks if a container exists
long	countBlobs(String container, ListContainerOptions options) Counts number of blobs inside a container
boolean	createContainer(String container) Creates a new container
void	createDirectory(String container, String directory) Creates a folder or a directory marker depending on the service
protected boolean	createDirectoryWithResult(String container, String directory) Creates a directory and returns the result
void	deleteContainer(String container) Deletes a container and all its content
void	deleteDirectory(String container, String directory) Deletes a folder or a directory marker depending on the service
boolean	directoryExists(String container, String directory) Determines if a directory exists
Iterable<String>	getAllContainerNames() Return an iterator that reports all the containers under base path
Iterable<String>	getBlobKeysInsideContainer(String container) Returns all the blobs key inside a container
File	getFileForBlobKey(String container, String blobKey) Returns a File object that links to the blob
Blob	newBlob(String name) Creates a new blob
void	removeBlob(String container, String blobKey)
void	writePayloadOnFile(String container, String blobKey, Payload payload) Write a Blob Payload into a file

Methods inherited from class java.lang.Object

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

Field Detail

logger

protected Logger logger

blobBuilders

protected final javax.inject.Provider<BlobBuilder> blobBuilders

baseDirectory

protected final String baseDirectory

filesystemContainerNameValidator

protected final FilesystemContainerNameValidator filesystemContainerNameValidator

filesystemBlobKeyValidator

protected final FilesystemBlobKeyValidator filesystemBlobKeyValidator

Constructor Detail

FilesystemStorageStrategyImpl

@Inject
protected FilesystemStorageStrategyImpl(javax.inject.Provider<BlobBuilder> blobBuilders,
                                               @Named(value="jclouds.filesystem.basedir")
                                               String baseDir,
                                               FilesystemContainerNameValidator filesystemContainerNameValidator,
                                               FilesystemBlobKeyValidator filesystemBlobKeyValidator)

Method Detail

containerExists

public boolean containerExists(String container)

Description copied from interface: FilesystemStorageStrategy

Checks if a container exists

Specified by:

containerExists in interface FilesystemStorageStrategy

Returns:

blobExists

public boolean blobExists(String container,
                          String key)

Specified by:

blobExists in interface FilesystemStorageStrategy

Returns:

createContainer

public boolean createContainer(String container)

Description copied from interface: FilesystemStorageStrategy

Creates a new container

Specified by:

createContainer in interface FilesystemStorageStrategy

Returns:

deleteContainer

public void deleteContainer(String container)

Description copied from interface: FilesystemStorageStrategy

Deletes a container and all its content

Specified by:

deleteContainer in interface FilesystemStorageStrategy

clearContainer

public void clearContainer(String container)

Empty the directory of its content (files and subdirectories)

Specified by:

clearContainer in interface FilesystemStorageStrategy

Parameters:

container -

clearContainer

public void clearContainer(String container,
                           ListContainerOptions options)

Description copied from interface: FilesystemStorageStrategy

Like FilesystemStorageStrategy.clearContainer(String) except you can use options to do things like recursive deletes, or clear at a different path than root.

Specified by:

clearContainer in interface FilesystemStorageStrategy

Parameters:

container - what to clear

options - recursion and path to clear

newBlob

public Blob newBlob(String name)

Description copied from interface: FilesystemStorageStrategy

Creates a new blob

Specified by:

newBlob in interface FilesystemStorageStrategy

Returns:

removeBlob

public void removeBlob(String container,
                       String blobKey)

Specified by:

removeBlob in interface FilesystemStorageStrategy

getAllContainerNames

public Iterable<String> getAllContainerNames()

Return an iterator that reports all the containers under base path

Specified by:

getAllContainerNames in interface FilesystemStorageStrategy

Returns:

getFileForBlobKey

public File getFileForBlobKey(String container,
                              String blobKey)

Returns a File object that links to the blob

Specified by:

getFileForBlobKey in interface FilesystemStorageStrategy

Parameters:

container -

blobKey -

Returns:

writePayloadOnFile

public void writePayloadOnFile(String container,
                               String blobKey,
                               Payload payload)
                        throws IOException

Write a Blob Payload into a file

Specified by:

writePayloadOnFile in interface FilesystemStorageStrategy

Parameters:

container -

blobKey -

payload -

Throws:

IOException

getBlobKeysInsideContainer

public Iterable<String> getBlobKeysInsideContainer(String container)
                                            throws IOException

Returns all the blobs key inside a container

Specified by:

getBlobKeysInsideContainer in interface FilesystemStorageStrategy

Parameters:

container -

Returns:

Throws:

IOException

directoryExists

public boolean directoryExists(String container,
                               String directory)

Description copied from interface: FilesystemStorageStrategy

Determines if a directory exists

Specified by:

directoryExists in interface FilesystemStorageStrategy

Parameters:

container - container where the directory resides

directory - full path to the directory

createDirectory

public void createDirectory(String container,
                            String directory)

Description copied from interface: FilesystemStorageStrategy

Creates a folder or a directory marker depending on the service

Specified by:

createDirectory in interface FilesystemStorageStrategy

Parameters:

container - container to create the directory in

directory - full path to the directory

deleteDirectory

public void deleteDirectory(String container,
                            String directory)

Description copied from interface: FilesystemStorageStrategy

Deletes a folder or a directory marker depending on the service

Specified by:

deleteDirectory in interface FilesystemStorageStrategy

Parameters:

container - container to delete the directory from

directory - full path to the directory to delete

countBlobs

public long countBlobs(String container,
                       ListContainerOptions options)

Description copied from interface: FilesystemStorageStrategy

Counts number of blobs inside a container

Specified by:

countBlobs in interface FilesystemStorageStrategy

Returns:

buildPathStartingFromBaseDir

protected String buildPathStartingFromBaseDir(String... pathTokens)

Facility method used to concatenate path tokens normalizing separators

Parameters:

pathTokens - all the string in the proper order that must be concatenated in order to obtain the filename

Returns:

the resulting string

createDirectoryWithResult

protected boolean createDirectoryWithResult(String container,
                                            String directory)

Creates a directory and returns the result

Parameters:

container -

directory -

Returns:

true if the directory was created, otherwise false