org.jclouds.filesystem.strategy.internal

Class FilesystemStorageStrategyImpl

java.lang.Object

org.jclouds.filesystem.strategy.internal.FilesystemStorageStrategyImpl

All Implemented Interfaces:

LocalStorageStrategy

public class FilesystemStorageStrategyImpl
extends Object
implements LocalStorageStrategy

FilesystemStorageStrategyImpl implements a blob store that stores objects on the file system. Content metadata and user attributes are stored in extended attributes if the file system supports them. Directory blobs (blobs that end with a /) cannot have content, but otherwise appear in LIST like normal blobs.

Field Summary

Fields

Modifier and Type	Field and Description
protected boolean	autoDetectContentType
protected String	baseDirectory
protected javax.inject.Provider<BlobBuilder>	blobBuilders
protected FilesystemBlobKeyValidator	filesystemBlobKeyValidator
protected FilesystemContainerNameValidator	filesystemContainerNameValidator
protected Logger	logger

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	FilesystemStorageStrategyImpl(javax.inject.Provider<BlobBuilder> blobBuilders, String baseDir, boolean autoDetectContentType, FilesystemContainerNameValidator filesystemContainerNameValidator, FilesystemBlobKeyValidator filesystemBlobKeyValidator, com.google.common.base.Supplier<Location> defaultLocation)

Method Summary

Modifier and Type	Method and Description
boolean	blobExists(String container, String key) Return true if a blob named by key exists
protected String	buildPathStartingFromBaseDir(String... pathTokens) Facility method used to concatenate path tokens normalizing separators
void	clearContainer(String container) Empty the container of its content (files and subdirectories), but doesn't delete the container itself
void	clearContainer(String container, ListContainerOptions options) Like LocalStorageStrategy.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)
boolean	createContainer(String container)
boolean	createContainerInLocation(String container, Location location, CreateContainerOptions options) Creates a new container
void	createDirectory(String container, String directory)
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)
boolean	directoryExists(String container, String directory)
Collection<String>	getAllContainerNames() Return an iterator that reports all the containers under base path
Blob	getBlob(String container, String key) Load the blob with the given key belonging to the container with the given name.
BlobAccess	getBlobAccess(String containerName, String blobName)
Iterable<String>	getBlobKeysInsideContainer(String container, String prefix) Returns all the blobs key inside a container
ContainerAccess	getContainerAccess(String container)
StorageMetadata	getContainerMetadata(String container)
File	getFileForBlobKey(String container, String blobKey) Returns a File object that links to the blob
Location	getLocation(String containerName)
String	getSeparator()
protected UserDefinedFileAttributeView	getUserDefinedFileAttributeView(Path path)
Blob	newBlob(String name)
String	putBlob(String containerName, Blob blob) Write a Blob into a file
void	removeBlob(String container, String blobKey) Remove blob named by the given key
void	setBlobAccess(String container, String name, BlobAccess access)
void	setContainerAccess(String container, ContainerAccess access)

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

autoDetectContentType

protected final boolean autoDetectContentType

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,
                                                @Named(value="jclouds.filesystem.auto-detect-content-type")
                                                boolean autoDetectContentType,
                                                FilesystemContainerNameValidator filesystemContainerNameValidator,
                                                FilesystemBlobKeyValidator filesystemBlobKeyValidator,
                                                com.google.common.base.Supplier<Location> defaultLocation)

Method Detail

containerExists

public boolean containerExists(String container)

Description copied from interface: LocalStorageStrategy

Checks if a container exists

Specified by:

containerExists in interface LocalStorageStrategy

Returns:

getAllContainerNames

public Collection<String> getAllContainerNames()

Description copied from interface: LocalStorageStrategy

Return an iterator that reports all the containers under base path

Specified by:

getAllContainerNames in interface LocalStorageStrategy

Returns:

createContainerInLocation

public boolean createContainerInLocation(String container,
                                         Location location,
                                         CreateContainerOptions options)

Description copied from interface: LocalStorageStrategy

Creates a new container

Specified by:

createContainerInLocation in interface LocalStorageStrategy

Returns:

getContainerAccess

public ContainerAccess getContainerAccess(String container)

Specified by:

getContainerAccess in interface LocalStorageStrategy

setContainerAccess

public void setContainerAccess(String container,
                               ContainerAccess access)

Specified by:

setContainerAccess in interface LocalStorageStrategy

deleteContainer

public void deleteContainer(String container)

Description copied from interface: LocalStorageStrategy

Deletes a container and all its content

Specified by:

deleteContainer in interface LocalStorageStrategy

clearContainer

public void clearContainer(String container)

Description copied from interface: LocalStorageStrategy

Empty the container of its content (files and subdirectories), but doesn't delete the container itself

Specified by:

clearContainer in interface LocalStorageStrategy

clearContainer

public void clearContainer(String container,
                           ListContainerOptions options)

Description copied from interface: LocalStorageStrategy

Like LocalStorageStrategy.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 LocalStorageStrategy

Parameters:

container - what to clear

options - recursion and path to clear

getContainerMetadata

public StorageMetadata getContainerMetadata(String container)

Specified by:

getContainerMetadata in interface LocalStorageStrategy

Returns:

StorageMetadata associated with a container name, e.g., creation date and location, or null if container does not exist

blobExists

public boolean blobExists(String container,
                          String key)

Description copied from interface: LocalStorageStrategy

Return true if a blob named by key exists

Specified by:

blobExists in interface LocalStorageStrategy

Returns:

getBlobKeysInsideContainer

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

Returns all the blobs key inside a container

Specified by:

getBlobKeysInsideContainer in interface LocalStorageStrategy

Parameters:

container -

Returns:

Throws:

IOException

getBlob

public Blob getBlob(String container,
                    String key)

Description copied from interface: LocalStorageStrategy

Load the blob with the given key belonging to the container with the given name. There must exist a resource on the file system whose complete name is given concatenating the container name and the key

Specified by:

getBlob in interface LocalStorageStrategy

Returns:

the blob belonging to the given container with the given key

putBlob

public String putBlob(String containerName,
                      Blob blob)
               throws IOException

Description copied from interface: LocalStorageStrategy

Write a Blob into a file

Specified by:

putBlob in interface LocalStorageStrategy

Returns:

etag of blob

Throws:

IOException

removeBlob

public void removeBlob(String container,
                       String blobKey)

Description copied from interface: LocalStorageStrategy

Remove blob named by the given key

Specified by:

removeBlob in interface LocalStorageStrategy

getBlobAccess

public BlobAccess getBlobAccess(String containerName,
                                String blobName)

Specified by:

getBlobAccess in interface LocalStorageStrategy

setBlobAccess

public void setBlobAccess(String container,
                          String name,
                          BlobAccess access)

Specified by:

setBlobAccess in interface LocalStorageStrategy

getLocation

public Location getLocation(String containerName)

Specified by:

getLocation in interface LocalStorageStrategy

Parameters:

containerName - name of container

Returns:

Location of container or null

getSeparator

public String getSeparator()

Specified by:

getSeparator in interface LocalStorageStrategy

Returns:

path separator, either / or \

createContainer

public boolean createContainer(String container)

newBlob

public Blob newBlob(String name)

getFileForBlobKey

public File getFileForBlobKey(String container,
                              String blobKey)

Returns a File object that links to the blob

Parameters:

container -

blobKey -

Returns:

directoryExists

public boolean directoryExists(String container,
                               String directory)

createDirectory

public void createDirectory(String container,
                            String directory)

deleteDirectory

public void deleteDirectory(String container,
                            String directory)

countBlobs

public long countBlobs(String container,
                       ListContainerOptions options)

getUserDefinedFileAttributeView

protected UserDefinedFileAttributeView getUserDefinedFileAttributeView(Path path)
                                                                throws IOException

Throws:

IOException

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