Base class for all backends using particular storage medium. More...

Inheritance diagram for FileBackendStore:

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Collaboration diagram for FileBackendStore:

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Public Member Functions
	__construct (array $config)

	clearCache (array $paths=null)
	Invalidate any in-process file stat and property cache.

	concatenate (array $params)
	Concatenate a list of storage files into a single file system file.

	copyInternal (array $params)
	Copy a file from one storage path to another in the backend.

	createInternal (array $params)
	Create a file in the backend with the given contents.

	deleteInternal (array $params)
	Delete a file at the storage path.

	describeInternal (array $params)
	Alter metadata for a file at the storage path.

	directoryExists (array $params)
	Check if a directory exists at a given storage path.

	executeOpHandlesInternal (array $fileOpHandles)
	Execute a list of FileBackendStoreOpHandle handles in parallel.

	fileExists (array $params)
	Check if a file exists at a storage path in the backend.

	getDirectoryList (array $params)
	Get an iterator to list all directories under a storage directory.

	getDirectoryListInternal ( $container, $dir, array $params)
	Do not call this function from places outside FileBackend.

	getFileContentsMulti (array $params)
	Like getFileContents() except it takes an array of storage paths and returns a map of storage paths to strings (or null on failure).

	getFileHttpUrl (array $params)

	getFileList (array $params)
	Get an iterator to list all stored files under a storage directory.

	getFileListInternal ( $container, $dir, array $params)
	Do not call this function from places outside FileBackend.

	getFileProps (array $params)
	Get the properties of the file at a storage path in the backend.

	getFileSha1Base36 (array $params)
	Get a SHA-1 hash of the file at a storage path in the backend.

	getFileSize (array $params)
	Get the size (bytes) of a file at a storage path in the backend.

	getFileStat (array $params)
	Get quick information about a file at a storage path in the backend.

	getFileTimestamp (array $params)
	Get the last-modified timestamp of the file at a storage path.

	getFileXAttributes (array $params)
	Get metadata about a file at a storage path in the backend.

	getLocalCopyMulti (array $params)
	Like getLocalCopy() except it takes an array of storage paths and returns a map of storage paths to TempFSFile objects (or null on failure).

	getLocalReferenceMulti (array $params)
	Like getLocalReference() except it takes an array of storage paths and returns a map of storage paths to FSFile objects (or null on failure).

	getOperationsInternal (array $ops)
	Return a list of FileOp objects from a list of operations.

	getPathsToLockForOpsInternal (array $performOps)
	Get a list of storage paths to lock for a list of operations Returns an array with LockManager::LOCK_UW (shared locks) and LockManager::LOCK_EX (exclusive locks) keys, each corresponding to a list of storage paths to be locked.

	getScopedLocksForOps (array $ops, StatusValue $status)
	Get an array of scoped locks needed for a batch of file operations.

	isPathUsableInternal ( $storagePath)
	Check if a file can be created or changed at a given storage path.

	isSingleShardPathInternal ( $storagePath)
	Check if a storage path maps to a single shard.

	maxFileSizeInternal ()
	Get the maximum allowable file size given backend medium restrictions and basic performance constraints.

	moveInternal (array $params)
	Move a file from one storage path to another in the backend.

	nullInternal (array $params)
	No-op file operation that does nothing.

	preloadCache (array $paths)
	Preload persistent file stat cache and property cache into in-process cache.

	preloadFileStat (array $params)
	Preload file stat information (concurrently if possible) into in-process cache.

	storeInternal (array $params)
	Store a file into the backend from a file on disk.

	streamFile (array $params)
	Stream the file at a storage path in the backend.

Public Member Functions inherited from FileBackend
	clean (array $params)
	Delete a storage directory if it is empty.

	copy (array $params, array $opts=[])
	Performs a single copy operation.

	create (array $params, array $opts=[])
	Performs a single create operation.

	delete (array $params, array $opts=[])
	Performs a single delete operation.

	describe (array $params, array $opts=[])
	Performs a single describe operation.

	doOperation (array $op, array $opts=[])
	Same as doOperations() except it takes a single operation.

	doOperations (array $ops, array $opts=[])
	This is the main entry point into the backend for write operations.

	doQuickOperation (array $op)
	Same as doQuickOperations() except it takes a single operation.

	doQuickOperations (array $ops, array $opts=[])
	Perform a set of independent file operations on some files.

	getContainerStoragePath ( $container)
	Get the storage path for the given container for this backend.

	getDomainId ()
	Get the domain identifier used for this backend (possibly empty).

	getFeatures ()
	Get the a bitfield of extra features supported by the backend medium.

	getFileContents (array $params)
	Get the contents of a file at a storage path in the backend.

	getJournal ()
	Get the file journal object for this backend.

	getLocalCopy (array $params)
	Get a local copy on disk of the file at a storage path in the backend.

	getLocalReference (array $params)
	Returns a file system file, identical to the file at a storage path.

	getName ()
	Get the unique backend name.

	getReadOnlyReason ()
	Get an explanatory message if this backend is read-only.

	getRootStoragePath ()
	Get the root storage path of this backend.

	getScopedFileLocks (array $paths, $type, StatusValue $status, $timeout=0)
	Lock the files at the given storage paths in the backend.

	getTopDirectoryList (array $params)
	Same as FileBackend::getDirectoryList() except only lists directories that are immediately under the given directory.

	getTopFileList (array $params)
	Same as FileBackend::getFileList() except only lists files that are immediately under the given directory.

	getWikiId ()
	Alias to getDomainId()

	hasFeatures ( $bitfield)
	Check if the backend medium supports a field of extra features.

	isReadOnly ()
	Check if this backend is read-only.

	lockFiles (array $paths, $type, $timeout=0)
	Lock the files at the given storage paths in the backend.

	move (array $params, array $opts=[])
	Performs a single move operation.

	prepare (array $params)
	Prepare a storage directory for usage.

	publish (array $params)
	Remove measures to block web access to a storage directory and the container it belongs to.

	quickCopy (array $params)
	Performs a single quick copy operation.

	quickCreate (array $params)
	Performs a single quick create operation.

	quickDelete (array $params)
	Performs a single quick delete operation.

	quickDescribe (array $params)
	Performs a single quick describe operation.

	quickMove (array $params)
	Performs a single quick move operation.

	quickStore (array $params)
	Performs a single quick store operation.

	secure (array $params)
	Take measures to block web access to a storage directory and the container it belongs to.

	setLogger (LoggerInterface $logger)

	store (array $params, array $opts=[])
	Performs a single store operation.

	unlockFiles (array $paths, $type)
	Unlock the files at the given storage paths in the backend.

Public Attributes
const	CACHE_CHEAP_SIZE = 500

const	CACHE_EXPENSIVE_SIZE = 5

const	CACHE_TTL = 10

Public Attributes inherited from FileBackend
const	ATTR_HEADERS = 1
	Bitfield flags for supported features.

const	ATTR_METADATA = 2

const	ATTR_UNICODE_PATHS = 4

Protected Member Functions
	deleteContainerCache ( $container)
	Delete the cached info for a container.

	deleteFileCache ( $path)
	Delete the cached stat info for a file path.

	directoriesAreVirtual ()
	Is this a key/value store where directories are just virtual? Virtual directories exists in so much as files exists that are prefixed with the directory path followed by a forward slash.

	doClean (array $params)

	doCleanInternal ( $container, $dir, array $params)

	doClearCache (array $paths=null)
	Clears any additional stat caches for storage paths.

	doConcatenate (array $params)

	doCopyInternal (array $params)

	doCreateInternal (array $params)

	doDeleteInternal (array $params)

	doDescribeInternal (array $params)

	doDirectoryExists ( $container, $dir, array $params)

	doExecuteOpHandlesInternal (array $fileOpHandles)

	doGetFileContentsMulti (array $params)

	doGetFileSha1Base36 (array $params)

	doGetFileStat (array $params)

	doGetFileStatMulti (array $params)
	Get file stat information (concurrently if possible) for several files.

	doGetFileXAttributes (array $params)

	doGetLocalCopyMulti (array $params)

	doGetLocalReferenceMulti (array $params)

	doMoveInternal (array $params)

	doOperationsInternal (array $ops, array $opts)

	doPrepare (array $params)

	doPrepareInternal ( $container, $dir, array $params)

	doPrimeContainerCache (array $containerInfo)
	Fill the backend-specific process cache given an array of resolved container names and their corresponding cached info.

	doPublish (array $params)

	doPublishInternal ( $container, $dir, array $params)

	doQuickOperationsInternal (array $ops)

	doSecure (array $params)

	doSecureInternal ( $container, $dir, array $params)

	doStoreInternal (array $params)

	doStreamFile (array $params)

	fullContainerName ( $container)
	Get the full container name, including the wiki ID prefix.

	getContainerHashLevels ( $container)
	Get the sharding config for a container.

	getContainerShard ( $container, $relPath)
	Get the container name shard suffix for a given path.

	getContainerSuffixes ( $container)
	Get a list of full container shard suffixes for a container.

	getContentType ( $storagePath, $content, $fsPath)
	Get the content type to use in HEAD/GET requests for a file.

	primeContainerCache (array $items)
	Do a batch lookup from cache for container stats for all containers used in a list of container names or storage paths objects.

	primeFileCache (array $items)
	Do a batch lookup from cache for file stats for all paths used in a list of storage paths or FileOp objects.

	resolveContainerName ( $container)
	Resolve a container name, checking if it's allowed by the backend.

	resolveContainerPath ( $container, $relStoragePath)
	Resolve a relative storage path, checking if it's allowed by the backend.

	resolveStoragePath ( $storagePath)
	Splits a storage path into an internal container name, an internal relative file name, and a container shard suffix.

	resolveStoragePathReal ( $storagePath)
	Like resolveStoragePath() except null values are returned if the container is sharded and the shard could not be determined or if the path ends with '/'.

	sanitizeOpHeaders (array $op)
	Normalize and filter HTTP headers from a file operation.

	setConcurrencyFlags (array $opts)
	Set the 'concurrency' option from a list of operation options.

	setContainerCache ( $container, array $val)
	Set the cached info for a container.

	setFileCache ( $path, array $val)
	Set the cached stat info for a file path.

Protected Member Functions inherited from FileBackend
	getScopedPHPBehaviorForOps ()
	Enter file operation scope.

	newStatus ()
	Yields the result of the status wrapper callback on either:

	resetOutputBuffer ()

	resolveFSFileObjects (array $ops)
	Convert FSFile 'src' paths to string paths (with an 'srcRef' field set to the FSFile)

	scopedProfileSection ( $section)

	wrapStatus (StatusValue $sv)

Static Protected Member Functions
static	isValidContainerName ( $container)
	Check if a full container name is valid.

static	isValidShortContainerName ( $container)
	Check if a short container name is valid.

static	normalizeXAttributes (array $xattr)
	Normalize file headers/metadata to the FileBackend::getFileXAttributes() format.

Static Protected Member Functions inherited from FileBackend
static	normalizeContainerPath ( $path)
	Validate and normalize a relative storage path.

Protected Attributes
ProcessCacheLRU	$cheapCache
	Map of paths to small (RAM/disk) cache items.

ProcessCacheLRU	$expensiveCache
	Map of paths to large (RAM/disk) cache items.

	$maxFileSize = 4294967296

WANObjectCache	$memCache

callable	$mimeCallback
	Method to get the MIME type of files.

array	$shardViaHashLevels = []
	Map of container names to sharding config.

BagOStuff	$srvCache

Protected Attributes inherited from FileBackend
int	$concurrency
	How many operations can be done in parallel.

string	$domainId
	Unique domain name.

FileJournal	$fileJournal

LockManager	$lockManager

LoggerInterface	$logger

string	$name
	Unique backend name.

callable	$obResetFunc

string	$parallelize
	When to do operations in parallel.

object string	$profiler
	Class name or object With profileIn/profileOut methods.

string	$readOnly
	Read-only explanation message.

callable	$statusWrapper

callable	$streamMimeFunc

string	$tmpDirectory
	Temporary file directory.

Private Member Functions
	containerCacheKey ( $container)
	Get the cache key for a container.

	fileCacheKey ( $path)
	Get the cache key for a file path.

Additional Inherited Members
Static Public Member Functions inherited from FileBackend
static	extensionFromPath ( $path, $case='lowercase')
	Get the final extension from a storage or FS path.

static	isPathTraversalFree ( $path)
	Check if a relative path has no directory traversals.

static	isStoragePath ( $path)
	Check if a given path is a "mwstore://" path.

static	makeContentDisposition ( $type, $filename='')
	Build a Content-Disposition header value per RFC 6266.

static	normalizeStoragePath ( $storagePath)
	Normalize a storage path by cleaning up directory separators.

static	parentStoragePath ( $storagePath)
	Get the parent storage directory of a storage path.

static	splitStoragePath ( $storagePath)
	Split a storage path into a backend name, a container name, and a relative file path.

Detailed Description

Base class for all backends using particular storage medium.

This class defines the methods as abstract that subclasses must implement. Outside callers should not use functions with "Internal" in the name.

The FileBackend operations are implemented using basic functions such as storeInternal(), copyInternal(), deleteInternal() and the like. This class is also responsible for path resolution and sanitization.

Since: 1.19

Definition at line 38 of file FileBackendStore.php.

Constructor & Destructor Documentation

◆ __construct()

FileBackendStore::__construct ( array $config )

See also

FileBackend::__construct() Additional $config params include:

srvCache : BagOStuff cache to APC or the like.
wanCache : WANObjectCache object to use for persistent caching.
mimeCallback : Callback that takes (storage path, content, file system path) and returns the MIME type of the file or 'unknown/unknown'. The file system path parameter should be used if the content one is null.

Parameters

array $config

Reimplemented from FileBackend.

Reimplemented in FSFileBackend, and SwiftFileBackend.

Definition at line 71 of file FileBackendStore.php.

Member Function Documentation

◆ clearCache()

FileBackendStore::clearCache ( array $paths = null )

final

Invalidate any in-process file stat and property cache.

If $paths is given, then only the cache for those files will be cleared.

See also: FileBackend::getFileStat()

Parameters

array $paths Storage paths (optional)

Reimplemented from FileBackend.

Definition at line 1282 of file FileBackendStore.php.

References doClearCache().

Referenced by copyInternal(), createInternal(), deleteInternal(), describeInternal(), SwiftFileBackend\doGetFileSha1base36(), SwiftFileBackend\doGetFileXAttributes(), doOperationsInternal(), doQuickOperationsInternal(), SwiftFileBackend\doStreamFile(), moveInternal(), and storeInternal().

◆ concatenate()

FileBackendStore::concatenate ( array $params )

final

Concatenate a list of storage files into a single file system file.

The target path should refer to a file that is already locked or otherwise safe from modification from other processes. Normally, the file will be a new temp file, which should be adequate.

Parameters

array

$params

Operation parameters, include:

srcs : ordered source storage paths (e.g. chunk1, chunk2, ...)
dst : file system path to 0-byte temp file
parallelize : try to do operations in parallel when possible

Returns: StatusValue

Reimplemented from FileBackend.

Definition at line 350 of file FileBackendStore.php.

References $params, doConcatenate(), FileBackend\getScopedFileLocks(), FileBackend\newStatus(), and FileBackend\scopedProfileSection().

◆ containerCacheKey()

FileBackendStore::containerCacheKey ( $container )

private

Get the cache key for a container.

Parameters

string $container Resolved container name

Returns: string

Definition at line 1618 of file FileBackendStore.php.

Referenced by primeContainerCache(), and setContainerCache().

◆ copyInternal()

FileBackendStore::copyInternal ( array $params )

final

Copy a file from one storage path to another in the backend.

This will overwrite any file that exists at the destination. Do not call this function from places outside FileBackend and FileOp.

$params include:

src : source storage path
dst : destination storage path
ignoreMissingSource : do nothing if the source file does not exist
headers : HTTP header name/value map
async : StatusValue will be returned immediately if supported. If the StatusValue is OK, then its value field will be set to a FileBackendStoreOpHandle object.
dstExists : Whether a file exists at the destination (optimization). Callers can use "false" if no existing file is being changed.

Parameters

array $params

Returns: StatusValue

Definition at line 205 of file FileBackendStore.php.

References $params, clearCache(), deleteFileCache(), doCopyInternal(), and FileBackend\scopedProfileSection().

Referenced by doMoveInternal().

◆ createInternal()

FileBackendStore::createInternal ( array $params )

final

Create a file in the backend with the given contents.

This will overwrite any file that exists at the destination. Do not call this function from places outside FileBackend and FileOp.

$params include:

content : the raw file contents
dst : destination storage path
headers : HTTP header name/value map
async : StatusValue will be returned immediately if supported. If the StatusValue is OK, then its value field will be set to a FileBackendStoreOpHandle object.
dstExists : Whether a file exists at the destination (optimization). Callers can use "false" if no existing file is being changed.

Parameters

array $params

Returns: StatusValue

Definition at line 122 of file FileBackendStore.php.

References $params, clearCache(), deleteFileCache(), doCreateInternal(), maxFileSizeInternal(), FileBackend\newStatus(), and FileBackend\scopedProfileSection().

◆ deleteContainerCache()

FileBackendStore::deleteContainerCache ( $container )

finalprotected

Delete the cached info for a container.

The cache key is salted for a while to prevent race conditions.

Parameters

string $container Resolved container name

Definition at line 1638 of file FileBackendStore.php.

Referenced by doClean().

◆ deleteFileCache()

FileBackendStore::deleteFileCache ( $path )

finalprotected

Delete the cached stat info for a file path.

The cache key is salted for a while to prevent race conditions. Since negatives (404s) are not cached, this does not need to be called when a file is created at a path were there was none before.

Parameters

string $path Storage path

Definition at line 1731 of file FileBackendStore.php.

References FileBackend\normalizeStoragePath().

Referenced by SwiftFileBackend\addMissingMetadata(), copyInternal(), createInternal(), deleteInternal(), describeInternal(), SwiftFileBackend\doStreamFile(), moveInternal(), and storeInternal().

◆ deleteInternal()

FileBackendStore::deleteInternal ( array $params )

final

Delete a file at the storage path.

Do not call this function from places outside FileBackend and FileOp.

$params include:

src : source storage path
ignoreMissingSource : do nothing if the source file does not exist
async : StatusValue will be returned immediately if supported. If the StatusValue is OK, then its value field will be set to a FileBackendStoreOpHandle object.

Parameters

array $params

Returns: StatusValue

Definition at line 237 of file FileBackendStore.php.

References clearCache(), deleteFileCache(), doDeleteInternal(), and FileBackend\scopedProfileSection().

Referenced by doMoveInternal().

◆ describeInternal()

FileBackendStore::describeInternal ( array $params )

final

Alter metadata for a file at the storage path.

Do not call this function from places outside FileBackend and FileOp.

$params include:

src : source storage path
headers : HTTP header name/value map
async : StatusValue will be returned immediately if supported. If the StatusValue is OK, then its value field will be set to a FileBackendStoreOpHandle object.

Parameters

array $params

Returns: StatusValue

Definition at line 317 of file FileBackendStore.php.

References $params, clearCache(), deleteFileCache(), doDescribeInternal(), FileBackend\newStatus(), and FileBackend\scopedProfileSection().

◆ directoriesAreVirtual()

FileBackendStore::directoriesAreVirtual ( )

abstractprotected

Is this a key/value store where directories are just virtual? Virtual directories exists in so much as files exists that are prefixed with the directory path followed by a forward slash.

Returns: bool

Reimplemented in FSFileBackend, MemoryFileBackend, and SwiftFileBackend.

Referenced by doClean().

◆ directoryExists()

FileBackendStore::directoryExists ( array $params )

final

Check if a directory exists at a given storage path.

Backends using key/value stores will check if the path is a virtual directory, meaning there are files under the given directory.

Storage backends with eventual consistency might return stale data.

Parameters

array

$params

Parameters include:

dir : storage directory

Returns: bool|null Returns null on failure

Since: 1.20

Reimplemented from FileBackend.

Definition at line 903 of file FileBackendStore.php.

References $params, $res, doDirectoryExists(), getContainerSuffixes(), list, resolveStoragePath(), and FileBackend\splitStoragePath().

◆ doClean()

FileBackendStore::doClean ( array $params )

finalprotected

See also: FileBackend::clean()

Parameters

array $params

Reimplemented from FileBackend.

Definition at line 548 of file FileBackendStore.php.

References $params, deleteContainerCache(), directoriesAreVirtual(), doClean(), doCleanInternal(), getContainerSuffixes(), FileBackend\getScopedFileLocks(), FileBackend\getTopDirectoryList(), list, FileBackend\newStatus(), resolveStoragePath(), FileBackend\scopedProfileSection(), and FileBackend\splitStoragePath().

Referenced by doClean().

◆ doCleanInternal()

FileBackendStore::doCleanInternal	(		$container,
			$dir,
		array	$params )

protected

See also: FileBackendStore::doClean()

Parameters

string	$container
string	$dir
array	$params

Returns: StatusValue

Reimplemented in SwiftFileBackend, and FSFileBackend.

Definition at line 600 of file FileBackendStore.php.

References FileBackend\newStatus().

Referenced by doClean().

◆ doClearCache()

FileBackendStore::doClearCache ( array $paths = null )

protected

Clears any additional stat caches for storage paths.

See also: FileBackend::clearCache()

Parameters

array $paths Storage paths (optional)

Reimplemented in FSFileBackend.

Definition at line 1306 of file FileBackendStore.php.

Referenced by clearCache().

◆ doConcatenate()

FileBackendStore::doConcatenate ( array $params )

protected

See also: FileBackendStore::concatenate()

Parameters

array $params

Returns: StatusValue

Definition at line 375 of file FileBackendStore.php.

References $params, FileBackend\getLocalReference(), getLocalReferenceMulti(), and FileBackend\newStatus().

Referenced by concatenate().

◆ doCopyInternal()

FileBackendStore::doCopyInternal ( array $params )

abstractprotected

See also: FileBackendStore::copyInternal()

Parameters

array $params

Returns: StatusValue

Reimplemented in FSFileBackend, MemoryFileBackend, and SwiftFileBackend.

Referenced by copyInternal().

◆ doCreateInternal()

FileBackendStore::doCreateInternal ( array $params )

abstractprotected

See also: FileBackendStore::createInternal()

Parameters

array $params

Returns: StatusValue

Reimplemented in FSFileBackend, MemoryFileBackend, and SwiftFileBackend.

Referenced by createInternal().

◆ doDeleteInternal()

FileBackendStore::doDeleteInternal ( array $params )

abstractprotected

See also: FileBackendStore::deleteInternal()

Parameters

array $params

Returns: StatusValue

Reimplemented in FSFileBackend, MemoryFileBackend, and SwiftFileBackend.

Referenced by deleteInternal().

◆ doDescribeInternal()

FileBackendStore::doDescribeInternal ( array $params )

protected

See also: FileBackendStore::describeInternal()

Parameters

array $params

Returns: StatusValue

Reimplemented in SwiftFileBackend.

Definition at line 335 of file FileBackendStore.php.

References FileBackend\newStatus().

Referenced by describeInternal().

◆ doDirectoryExists()

FileBackendStore::doDirectoryExists	(		$container,
			$dir,
		array	$params )

abstractprotected

See also: FileBackendStore::directoryExists()

Parameters

string	$container	Resolved container name
string	$dir	Resolved path relative to container
array	$params

Returns: bool|null

Reimplemented in MemoryFileBackend, SwiftFileBackend, and FSFileBackend.

Referenced by directoryExists().

◆ doExecuteOpHandlesInternal()

FileBackendStore::doExecuteOpHandlesInternal ( array $fileOpHandles )

protected

See also: FileBackendStore::executeOpHandlesInternal()

Parameters

FileBackendStoreOpHandle[] $fileOpHandles

Exceptions

FileBackendError

Returns: StatusValue[] List of corresponding StatusValue objects

Reimplemented in FSFileBackend, and SwiftFileBackend.

Definition at line 1232 of file FileBackendStore.php.

Referenced by executeOpHandlesInternal().

◆ doGetFileContentsMulti()

FileBackendStore::doGetFileContentsMulti ( array $params )

protected

See also: FileBackendStore::getFileContentsMulti()

Parameters

array $params

Returns: array

Reimplemented in SwiftFileBackend.

Definition at line 696 of file FileBackendStore.php.

References $path, and doGetLocalReferenceMulti().

Referenced by getFileContentsMulti().

◆ doGetFileSha1Base36()

FileBackendStore::doGetFileSha1Base36 ( array $params )

protected

See also: FileBackendStore::getFileSha1Base36()

Parameters

array $params

Returns: bool|string

Definition at line 764 of file FileBackendStore.php.

References FileBackend\getLocalReference().

Referenced by getFileSha1Base36().

◆ doGetFileStat()

FileBackendStore::doGetFileStat ( array $params )

abstractprotected

See also: FileBackendStore::getFileStat()

Parameters

array $params

Reimplemented in FSFileBackend, MemoryFileBackend, and SwiftFileBackend.

Referenced by getFileStat().

◆ doGetFileStatMulti()

FileBackendStore::doGetFileStatMulti ( array $params )

protected

Get file stat information (concurrently if possible) for several files.

See also: FileBackend::getFileStat()

Parameters

array

$params

Parameters include:

srcs : list of source storage paths
latest : use the latest available data

Returns: array|null Map of storage paths to array|bool|null (returns null if not supported)

Since: 1.23

Reimplemented in SwiftFileBackend.

Definition at line 1367 of file FileBackendStore.php.

Referenced by preloadFileStat().

◆ doGetFileXAttributes()

FileBackendStore::doGetFileXAttributes ( array $params )

protected

See also: FileBackendStore::getFileXAttributes()

Parameters

array $params

Returns: array[][]

Reimplemented in SwiftFileBackend.

Definition at line 734 of file FileBackendStore.php.

Referenced by getFileXAttributes().

◆ doGetLocalCopyMulti()

FileBackendStore::doGetLocalCopyMulti ( array $params )

abstractprotected

See also: FileBackendStore::getLocalCopyMulti()

Parameters

array $params

Returns: array

Reimplemented in FSFileBackend, MemoryFileBackend, SwiftFileBackend, and MockFileBackend.

Referenced by doGetLocalReferenceMulti(), and getLocalCopyMulti().

◆ doGetLocalReferenceMulti()

FileBackendStore::doGetLocalReferenceMulti ( array $params )

protected

See also: FileBackendStore::getLocalReferenceMulti()

Parameters

array $params

Returns: array

Reimplemented in FSFileBackend.

Definition at line 820 of file FileBackendStore.php.

References doGetLocalCopyMulti().

Referenced by doGetFileContentsMulti(), and getLocalReferenceMulti().

◆ doMoveInternal()

FileBackendStore::doMoveInternal ( array $params )

protected

See also: FileBackendStore::moveInternal()

Parameters

array $params

Returns: StatusValue

Reimplemented in FSFileBackend, and SwiftFileBackend.

Definition at line 288 of file FileBackendStore.php.

References $params, copyInternal(), deleteInternal(), and FileBackend\normalizeStoragePath().

Referenced by moveInternal().

◆ doOperationsInternal()

FileBackendStore::doOperationsInternal	(	array	$ops,
		array	$opts )

finalprotected

See also: FileBackend::doOperations()

Parameters

array	$ops
array	$opts

Reimplemented from FileBackend.

Definition at line 1072 of file FileBackendStore.php.

References FileOpBatch\attempt(), clearCache(), getOperationsInternal(), getPathsToLockForOpsInternal(), FileBackend\getScopedFileLocks(), FileBackend\newStatus(), preloadFileStat(), primeContainerCache(), FileBackend\scopedProfileSection(), and setConcurrencyFlags().

◆ doPrepare()

FileBackendStore::doPrepare ( array $params )

finalprotected

See also: FileBackend::prepare()

Parameters

array $params

Reimplemented from FileBackend.

Definition at line 443 of file FileBackendStore.php.

References $params, doPrepareInternal(), getContainerSuffixes(), list, FileBackend\newStatus(), resolveStoragePath(), FileBackend\scopedProfileSection(), and FileBackend\splitStoragePath().

◆ doPrepareInternal()

FileBackendStore::doPrepareInternal	(		$container,
			$dir,
		array	$params )

protected

See also: FileBackendStore::doPrepare()

Parameters

string	$container
string	$dir
array	$params

Returns: StatusValue

Reimplemented in SwiftFileBackend, and FSFileBackend.

Definition at line 474 of file FileBackendStore.php.

References FileBackend\newStatus().

Referenced by doPrepare().

◆ doPrimeContainerCache()

FileBackendStore::doPrimeContainerCache ( array $containerInfo )

protected

Fill the backend-specific process cache given an array of resolved container names and their corresponding cached info.

Only containers that actually exist should appear in the map.

Parameters

array $containerInfo Map of resolved container names to cached info

Reimplemented in SwiftFileBackend.

Definition at line 1690 of file FileBackendStore.php.

Referenced by primeContainerCache().

◆ doPublish()

FileBackendStore::doPublish ( array $params )

finalprotected

See also: FileBackend::publish()

Parameters

array $params

Reimplemented from FileBackend.

Definition at line 513 of file FileBackendStore.php.

References $params, doPublishInternal(), getContainerSuffixes(), list, FileBackend\newStatus(), resolveStoragePath(), FileBackend\scopedProfileSection(), and FileBackend\splitStoragePath().

◆ doPublishInternal()

FileBackendStore::doPublishInternal	(		$container,
			$dir,
		array	$params )

protected

See also: FileBackendStore::doPublish()

Parameters

string	$container
string	$dir
array	$params

Returns: StatusValue

Reimplemented in SwiftFileBackend, and FSFileBackend.

Definition at line 544 of file FileBackendStore.php.

References FileBackend\newStatus().

Referenced by doPublish().

◆ doQuickOperationsInternal()

FileBackendStore::doQuickOperationsInternal ( array $ops )

finalprotected

See also: FileBackend::doQuickOperations()

Parameters

array $ops

Since: 1.20

Reimplemented from FileBackend.

Definition at line 1139 of file FileBackendStore.php.

References FileBackend\$concurrency, $params, clearCache(), executeOpHandlesInternal(), FileBackend\newStatus(), and FileBackend\scopedProfileSection().

◆ doSecure()

FileBackendStore::doSecure ( array $params )

finalprotected

See also: FileBackend::secure()

Parameters

array $params

Reimplemented from FileBackend.

Definition at line 478 of file FileBackendStore.php.

References $params, doSecureInternal(), getContainerSuffixes(), list, FileBackend\newStatus(), resolveStoragePath(), FileBackend\scopedProfileSection(), and FileBackend\splitStoragePath().

◆ doSecureInternal()

FileBackendStore::doSecureInternal	(		$container,
			$dir,
		array	$params )

protected

See also: FileBackendStore::doSecure()

Parameters

string	$container
string	$dir
array	$params

Returns: StatusValue

Reimplemented in SwiftFileBackend, and FSFileBackend.

Definition at line 509 of file FileBackendStore.php.

References FileBackend\newStatus().

Referenced by doSecure().

◆ doStoreInternal()

FileBackendStore::doStoreInternal ( array $params )

abstractprotected

See also: FileBackendStore::storeInternal()

Parameters

array $params

Returns: StatusValue

Reimplemented in FSFileBackend, MemoryFileBackend, and SwiftFileBackend.

Referenced by storeInternal().

◆ doStreamFile()

FileBackendStore::doStreamFile ( array $params )

protected

See also: FileBackendStore::streamFile()

Parameters

array $params

Returns: StatusValue

Reimplemented in SwiftFileBackend.

Definition at line 874 of file FileBackendStore.php.

References $params, $res, FileBackend\getLocalReference(), FileBackend\newStatus(), HTTPFileStreamer\send404Message(), HTTPFileStreamer\STREAM_ALLOW_OB, and HTTPFileStreamer\STREAM_HEADLESS.

Referenced by streamFile().

◆ executeOpHandlesInternal()

FileBackendStore::executeOpHandlesInternal ( array $fileOpHandles )

final

Execute a list of FileBackendStoreOpHandle handles in parallel.

The resulting StatusValue object fields will correspond to the order in which the handles where given.

Parameters

FileBackendStoreOpHandle[] $fileOpHandles

Returns: StatusValue[] Map of StatusValue objects

Exceptions

FileBackendError

Definition at line 1205 of file FileBackendStore.php.

References $res, doExecuteOpHandlesInternal(), and FileBackend\scopedProfileSection().

Referenced by SwiftFileBackend\doCopyInternal(), SwiftFileBackend\doCreateInternal(), SwiftFileBackend\doDeleteInternal(), SwiftFileBackend\doDescribeInternal(), SwiftFileBackend\doMoveInternal(), doQuickOperationsInternal(), and SwiftFileBackend\doStoreInternal().

◆ fileCacheKey()

FileBackendStore::fileCacheKey ( $path )

private

Get the cache key for a file path.

Parameters

string $path Normalized storage path

Returns: string

Definition at line 1699 of file FileBackendStore.php.

Referenced by primeFileCache(), and setFileCache().

◆ fileExists()

FileBackendStore::fileExists ( array $params )

final

Check if a file exists at a storage path in the backend.

This returns false if only a directory exists at the path.

Parameters

array

$params

Parameters include:

src : source storage path
latest : use the latest available data

Returns: bool|null Returns null on failure

Reimplemented from FileBackend.

Definition at line 604 of file FileBackendStore.php.

References getFileStat(), and FileBackend\scopedProfileSection().

Referenced by SwiftFileBackend\doStreamFile().

◆ fullContainerName()

FileBackendStore::fullContainerName ( $container )

finalprotected

Get the full container name, including the wiki ID prefix.

Parameters

string $container

Returns: string

Definition at line 1578 of file FileBackendStore.php.

Referenced by resolveStoragePath().

◆ getContainerHashLevels()

FileBackendStore::getContainerHashLevels ( $container )

finalprotected

Get the sharding config for a container.

If greater than 0, then all file storage paths within the container are required to be hashed accordingly.

Parameters

string $container

Returns: array (integer levels, integer base, repeat flag) or (0, 0, false)

Definition at line 1538 of file FileBackendStore.php.

References false.

Referenced by getContainerShard(), and getContainerSuffixes().

◆ getContainerShard()

FileBackendStore::getContainerShard	(		$container,
			$relPath )

finalprotected

Get the container name shard suffix for a given path.

Any empty suffix means the container is not sharded.

Parameters

string	$container	Container name
string	$relPath	Storage path relative to the container

Returns: string|null Returns null if shard could not be determined

Definition at line 1486 of file FileBackendStore.php.

References $base, getContainerHashLevels(), and list.

Referenced by resolveStoragePath().

◆ getContainerSuffixes()

FileBackendStore::getContainerSuffixes ( $container )

finalprotected

Get a list of full container shard suffixes for a container.

Parameters

string $container

Returns: array

Definition at line 1559 of file FileBackendStore.php.

References $base, getContainerHashLevels(), and list.

Referenced by directoryExists(), doClean(), doPrepare(), doPublish(), doSecure(), getDirectoryList(), and getFileList().

◆ getContentType()

FileBackendStore::getContentType	(	$storagePath,
		$content,
		$fsPath )

protected

Get the content type to use in HEAD/GET requests for a file.

Parameters

string	$storagePath
string \| null	$content	File data
string \| null	$fsPath	File system path

Returns: string MIME type

Definition at line 1838 of file FileBackendStore.php.

References $mime.

Referenced by SwiftFileBackend\doCreateInternal(), and SwiftFileBackend\doStoreInternal().

◆ getDirectoryList()

FileBackendStore::getDirectoryList ( array $params )

final

Get an iterator to list all directories under a storage directory.

If the directory is of the form "mwstore://backend/container", then all directories in the container will be listed. If the directory is of form "mwstore://backend/container/dir", then all directories directly under that directory will be listed. Results will be storage directories relative to the given directory.

Storage backends with eventual consistency might return stale data.

Failures during iteration can result in FileBackendError exceptions (since 1.22).

Parameters

array

$params

Parameters include:

dir : storage directory
topOnly : only return direct child dirs of the directory

Returns: Traversable|array|null Returns null on failure

Since: 1.20

Reimplemented from FileBackend.

Definition at line 938 of file FileBackendStore.php.

References $params, getContainerSuffixes(), getDirectoryListInternal(), list, resolveStoragePath(), and FileBackend\splitStoragePath().

◆ getDirectoryListInternal()

FileBackendStore::getDirectoryListInternal	(		$container,
			$dir,
		array	$params )

abstract

Do not call this function from places outside FileBackend.

See also: FileBackendStore::getDirectoryList()

Parameters

string	$container	Resolved container name
string	$dir	Resolved path relative to container
array	$params

Returns: Traversable|array|null Returns null on failure

Reimplemented in MemoryFileBackend, SwiftFileBackend, and FSFileBackend.

Referenced by getDirectoryList().

◆ getFileContentsMulti()

FileBackendStore::getFileContentsMulti ( array $params )

Like getFileContents() except it takes an array of storage paths and returns a map of storage paths to strings (or null on failure).

The map keys (paths) are in the same order as the provided list of paths.

See also: FileBackend::getFileContents()

Parameters

array

$params

Parameters include:

srcs : list of source storage paths
latest : use the latest available data
parallelize : try to do operations in parallel when possible

Returns: array Map of (path name => string or false on failure)

Since: 1.20

Reimplemented from FileBackend.

Definition at line 682 of file FileBackendStore.php.

References $params, doGetFileContentsMulti(), FileBackend\scopedProfileSection(), and setConcurrencyFlags().

◆ getFileHttpUrl()

FileBackendStore::getFileHttpUrl ( array $params )

See also: FileBackend::getFileHttpUrl()

Parameters

array $params

Returns: string|null

Reimplemented from FileBackend.

Reimplemented in SwiftFileBackend.

Definition at line 845 of file FileBackendStore.php.

◆ getFileList()

FileBackendStore::getFileList ( array $params )

final

Get an iterator to list all stored files under a storage directory.

If the directory is of the form "mwstore://backend/container", then all files in the container will be listed. If the directory is of form "mwstore://backend/container/dir", then all files under that directory will be listed. Results will be storage paths relative to the given directory.

Storage backends with eventual consistency might return stale data.

Failures during iteration can result in FileBackendError exceptions (since 1.22).

Parameters

array

$params

Parameters include:

dir : storage directory
topOnly : only return direct child files of the directory (since 1.20)
adviseStat : set to true if stat requests will be made on the files (since 1.22)

Returns: Traversable|array|null Returns null on failure

Reimplemented from FileBackend.

Definition at line 968 of file FileBackendStore.php.

References $params, getContainerSuffixes(), getFileListInternal(), list, resolveStoragePath(), and FileBackend\splitStoragePath().

◆ getFileListInternal()

FileBackendStore::getFileListInternal	(		$container,
			$dir,
		array	$params )

abstract

Do not call this function from places outside FileBackend.

See also: FileBackendStore::getFileList()

Parameters

string	$container	Resolved container name
string	$dir	Resolved path relative to container
array	$params

Returns: Traversable|array|null Returns null on failure

Reimplemented in MemoryFileBackend, SwiftFileBackend, and FSFileBackend.

Referenced by getFileList().

◆ getFileProps()

FileBackendStore::getFileProps ( array $params )

final

Get the properties of the file at a storage path in the backend.

This gives the result of FSFile::getProps() on a local copy of the file.

Parameters

array

$params

Parameters include:

src : source storage path
latest : use the latest available data

Returns: array Returns FSFile::placeholderProps() on failure

Reimplemented from FileBackend.

Definition at line 773 of file FileBackendStore.php.

References FileBackend\getLocalReference(), FSFile\placeholderProps(), and FileBackend\scopedProfileSection().

◆ getFileSha1Base36()

FileBackendStore::getFileSha1Base36 ( array $params )

final

Get a SHA-1 hash of the file at a storage path in the backend.

Parameters

array

$params

Parameters include:

src : source storage path
latest : use the latest available data

Returns: string|bool Hash string or false on failure

Reimplemented from FileBackend.

Definition at line 738 of file FileBackendStore.php.

References $params, doGetFileSha1Base36(), FileBackend\normalizeStoragePath(), and FileBackend\scopedProfileSection().

◆ getFileSize()

FileBackendStore::getFileSize ( array $params )

final

Get the size (bytes) of a file at a storage path in the backend.

Parameters

array

$params

Parameters include:

src : source storage path
latest : use the latest available data

Returns: int|bool Returns false on failure

Reimplemented from FileBackend.

Definition at line 618 of file FileBackendStore.php.

References getFileStat(), and FileBackend\scopedProfileSection().

◆ getFileStat()

FileBackendStore::getFileStat ( array $params )

final

Get quick information about a file at a storage path in the backend.

If the file does not exist, then this returns false. Otherwise, the result is an associative array that includes:

mtime : the last-modified timestamp (TS_MW)
size : the file size (bytes) Additional values may be included for internal use only.

Parameters

array

$params

Parameters include:

src : source storage path
latest : use the latest available data

Returns: array|bool|null Returns null on failure

Reimplemented from FileBackend.

Definition at line 625 of file FileBackendStore.php.

References $params, doGetFileStat(), FileBackend\normalizeStoragePath(), normalizeXAttributes(), primeFileCache(), FileBackend\scopedProfileSection(), and setFileCache().

Referenced by SwiftFileBackend\doDescribeInternal(), SwiftFileBackend\doGetFileSha1base36(), SwiftFileBackend\doGetFileXAttributes(), fileExists(), getFileSize(), and getFileTimestamp().

◆ getFileTimestamp()

FileBackendStore::getFileTimestamp ( array $params )

final

Get the last-modified timestamp of the file at a storage path.

Parameters

array

$params

Parameters include:

src : source storage path
latest : use the latest available data

Returns: string|bool TS_MW timestamp or false on failure

Reimplemented from FileBackend.

Definition at line 611 of file FileBackendStore.php.

References getFileStat(), and FileBackend\scopedProfileSection().

◆ getFileXAttributes()

FileBackendStore::getFileXAttributes ( array $params )

final

Get metadata about a file at a storage path in the backend.

If the file does not exist, then this returns false. Otherwise, the result is an associative array that includes:

headers : map of HTTP headers used for GET/HEAD requests (name => value)
metadata : map of file metadata (name => value) Metadata keys and headers names will be returned in all lower-case. Additional values may be included for internal use only.

Use FileBackend::hasFeatures() to check how well this is supported.

Parameters

array

$params

$params include:

src : source storage path
latest : use the latest available data

Returns: array|bool Returns false on failure

Since: 1.23

Reimplemented from FileBackend.

Definition at line 707 of file FileBackendStore.php.

References $params, doGetFileXAttributes(), FileBackend\normalizeStoragePath(), normalizeXAttributes(), and FileBackend\scopedProfileSection().

◆ getLocalCopyMulti()

FileBackendStore::getLocalCopyMulti ( array $params )

final

Like getLocalCopy() except it takes an array of storage paths and returns a map of storage paths to TempFSFile objects (or null on failure).

The map keys (paths) are in the same order as the provided list of paths.

See also: FileBackend::getLocalCopy()

Parameters

array

$params

Parameters include:

srcs : list of source storage paths
latest : use the latest available data
parallelize : try to do operations in parallel when possible

Returns: array Map of (path name => TempFSFile or null on failure)

Since: 1.20

Reimplemented from FileBackend.

Definition at line 824 of file FileBackendStore.php.

References $params, doGetLocalCopyMulti(), FileBackend\scopedProfileSection(), and setConcurrencyFlags().

◆ getLocalReferenceMulti()

FileBackendStore::getLocalReferenceMulti ( array $params )

final

Like getLocalReference() except it takes an array of storage paths and returns a map of storage paths to FSFile objects (or null on failure).

The map keys (paths) are in the same order as the provided list of paths.

See also: FileBackend::getLocalReference()

Parameters

array

$params

Parameters include:

srcs : list of source storage paths
latest : use the latest available data
parallelize : try to do operations in parallel when possible

Returns: array Map of (path name => FSFile or null on failure)

Since: 1.20

Reimplemented from FileBackend.

Definition at line 781 of file FileBackendStore.php.

References $params, $path, doGetLocalReferenceMulti(), FileBackend\normalizeStoragePath(), FileBackend\scopedProfileSection(), and setConcurrencyFlags().

Referenced by doConcatenate().

◆ getOperationsInternal()

FileBackendStore::getOperationsInternal ( array $ops )

final

Return a list of FileOp objects from a list of operations.

Do not call this function from places outside FileBackend.

The result must have the same number of items as the input. An exception is thrown if an unsupported operation is requested.

Parameters

array $ops Same format as doOperations()

Returns: FileOp[] List of FileOp objects

Exceptions

FileBackendError

Definition at line 1009 of file FileBackendStore.php.

References $params.

Referenced by doOperationsInternal(), and getScopedLocksForOps().

◆ getPathsToLockForOpsInternal()

FileBackendStore::getPathsToLockForOpsInternal ( array $performOps )

final

Get a list of storage paths to lock for a list of operations Returns an array with LockManager::LOCK_UW (shared locks) and LockManager::LOCK_EX (exclusive locks) keys, each corresponding to a list of storage paths to be locked.

All returned paths are normalized.

Parameters

array $performOps List of FileOp objects

Returns: array (LockManager::LOCK_UW => path list, LockManager::LOCK_EX => path list)

Definition at line 1048 of file FileBackendStore.php.

Referenced by doOperationsInternal(), and getScopedLocksForOps().

◆ getScopedLocksForOps()

FileBackendStore::getScopedLocksForOps	(	array	$ops,
		StatusValue	$status )

Get an array of scoped locks needed for a batch of file operations.

Normally, FileBackend::doOperations() handles locking, unless the 'nonLocking' param is passed in. This function is useful if you want the files to be locked for a broader scope than just when the files are changing. For example, if you need to update DB metadata, you may want to keep the files locked until finished.

See also: FileBackend::doOperations()

Parameters

array	$ops	List of file operations to FileBackend::doOperations()
StatusValue	$status	StatusValue to update on lock/unlock

Returns: ScopedLock|null

Since: 1.20

Reimplemented from FileBackend.

Definition at line 1066 of file FileBackendStore.php.

References getOperationsInternal(), getPathsToLockForOpsInternal(), and FileBackend\getScopedFileLocks().

◆ isPathUsableInternal()

FileBackendStore::isPathUsableInternal ( $storagePath )

abstract

Check if a file can be created or changed at a given storage path.

FS backends should check if the parent directory exists, files can be written under it, and that any file already there is writable. Backends using key/value stores should check if the container exists.

Parameters

string $storagePath

Returns: bool

Reimplemented in FSFileBackend, MemoryFileBackend, and SwiftFileBackend.

◆ isSingleShardPathInternal()

FileBackendStore::isSingleShardPathInternal ( $storagePath )

final

Check if a storage path maps to a single shard.

Container dirs like "a", where the container shards on "x/xy", can reside on several shards. Such paths are tricky to handle.

Parameters

string $storagePath Storage path

Returns: bool

Definition at line 1524 of file FileBackendStore.php.

References list, and resolveStoragePath().

◆ isValidContainerName()

static FileBackendStore::isValidContainerName ( $container )

staticfinalprotected

Check if a full container name is valid.

This checks for length and illegal characters. Limiting the characters makes migrations to other stores easier.

Parameters

string $container

Returns: bool

Definition at line 1407 of file FileBackendStore.php.

Referenced by isValidShortContainerName().

◆ isValidShortContainerName()

static FileBackendStore::isValidShortContainerName ( $container )

staticfinalprotected

Check if a short container name is valid.

This checks for length and illegal characters. This may disallow certain characters that can appear in the prefix used to make the full container name.

Parameters

string $container

Returns: bool

Definition at line 1390 of file FileBackendStore.php.

References isValidContainerName().

◆ maxFileSizeInternal()

FileBackendStore::maxFileSizeInternal ( )

final

Get the maximum allowable file size given backend medium restrictions and basic performance constraints.

Do not call this function from places outside FileBackend and FileOp.

Returns: int Bytes

Definition at line 89 of file FileBackendStore.php.

References $maxFileSize.

Referenced by createInternal(), and storeInternal().

◆ moveInternal()

FileBackendStore::moveInternal ( array $params )

final

Move a file from one storage path to another in the backend.

This will overwrite any file that exists at the destination. Do not call this function from places outside FileBackend and FileOp.

$params include:

src : source storage path
dst : destination storage path
ignoreMissingSource : do nothing if the source file does not exist
headers : HTTP header name/value map
async : StatusValue will be returned immediately if supported. If the StatusValue is OK, then its value field will be set to a FileBackendStoreOpHandle object.
dstExists : Whether a file exists at the destination (optimization). Callers can use "false" if no existing file is being changed.

Parameters

array $params

Returns: StatusValue

Definition at line 271 of file FileBackendStore.php.

References $params, clearCache(), deleteFileCache(), doMoveInternal(), and FileBackend\scopedProfileSection().

◆ normalizeXAttributes()

static FileBackendStore::normalizeXAttributes ( array $xattr )

staticfinalprotected

Normalize file headers/metadata to the FileBackend::getFileXAttributes() format.

Parameters

array $xattr

Returns: array

Since: 1.22

Definition at line 1795 of file FileBackendStore.php.

References $value.

Referenced by getFileStat(), getFileXAttributes(), preloadFileStat(), and primeFileCache().

◆ nullInternal()

FileBackendStore::nullInternal ( array $params )

final

No-op file operation that does nothing.

Do not call this function from places outside FileBackend and FileOp.

Parameters

array $params

Returns: StatusValue

Definition at line 346 of file FileBackendStore.php.

References FileBackend\newStatus().

◆ preloadCache()

FileBackendStore::preloadCache ( array $paths )

final

Preload persistent file stat cache and property cache into in-process cache.

This should be used when stat calls will be made on a known list of a many files.

See also: FileBackend::getFileStat()

Parameters

array $paths Storage paths

Reimplemented from FileBackend.

Definition at line 1271 of file FileBackendStore.php.

References list, primeContainerCache(), primeFileCache(), and resolveStoragePath().

◆ preloadFileStat()

FileBackendStore::preloadFileStat ( array $params )

final

Preload file stat information (concurrently if possible) into in-process cache.

This should be used when stat calls will be made on a known list of a many files. This does not make use of the persistent file stat cache.

See also: FileBackend::getFileStat()

Parameters

array

$params

Parameters include:

srcs : list of source storage paths
latest : use the latest available data

Returns: bool All requests proceeded without I/O errors (since 1.24)

Since: 1.23

Reimplemented from FileBackend.

Definition at line 1309 of file FileBackendStore.php.

References $params, $success, doGetFileStatMulti(), FileBackend\normalizeStoragePath(), normalizeXAttributes(), FileBackend\scopedProfileSection(), and setFileCache().

Referenced by doOperationsInternal().

◆ primeContainerCache()

FileBackendStore::primeContainerCache ( array $items )

finalprotected

Do a batch lookup from cache for container stats for all containers used in a list of container names or storage paths objects.

This loads the persistent cache values into the process cache.

Parameters

array $items

Definition at line 1651 of file FileBackendStore.php.

References containerCacheKey(), doPrimeContainerCache(), list, resolveStoragePath(), and FileBackend\scopedProfileSection().

Referenced by doOperationsInternal(), SwiftFileBackend\getContainerStat(), and preloadCache().

◆ primeFileCache()

FileBackendStore::primeFileCache ( array $items )

finalprotected

Do a batch lookup from cache for file stats for all paths used in a list of storage paths or FileOp objects.

This loads the persistent cache values into the process cache.

Parameters

array $items List of storage paths

Definition at line 1748 of file FileBackendStore.php.

References $path, fileCacheKey(), list, FileBackend\normalizeStoragePath(), normalizeXAttributes(), resolveStoragePath(), and FileBackend\scopedProfileSection().

Referenced by getFileStat(), and preloadCache().

◆ resolveContainerName()

FileBackendStore::resolveContainerName ( $container )

protected

Resolve a container name, checking if it's allowed by the backend.

This is intended for internal use, such as encoding illegal chars. Subclasses can override this to be more restrictive.

Parameters

string $container

Returns: string|null

Definition at line 1594 of file FileBackendStore.php.

Referenced by resolveStoragePath().

◆ resolveContainerPath()

FileBackendStore::resolveContainerPath	(		$container,
			$relStoragePath )

protected

Resolve a relative storage path, checking if it's allowed by the backend.

This is intended for internal use, such as encoding illegal chars or perhaps getting absolute paths (e.g. FS based backends). Note that the relative path may be the empty string (e.g. the path is simply to the container).

Parameters

string	$container	Container name
string	$relStoragePath	Storage path relative to the container

Returns: string|null Path or null if not valid

Reimplemented in FSFileBackend, and SwiftFileBackend.

Definition at line 1608 of file FileBackendStore.php.

Referenced by resolveStoragePath().

◆ resolveStoragePath()

FileBackendStore::resolveStoragePath ( $storagePath )

finalprotected

Splits a storage path into an internal container name, an internal relative file name, and a container shard suffix.

Any shard suffix is already appended to the internal container name. This also checks that the storage path is valid and within this backend.

If the container is sharded but a suffix could not be determined, this means that the path can only refer to a directory and can only be scanned by looking in all the container shards.

Parameters

string $storagePath

Returns: array (container, path, container suffix) or (null, null, null) if invalid

Definition at line 1428 of file FileBackendStore.php.

References fullContainerName(), getContainerShard(), list, FileBackend\normalizeContainerPath(), resolveContainerName(), resolveContainerPath(), and FileBackend\splitStoragePath().

Referenced by directoryExists(), doClean(), doPrepare(), doPublish(), doSecure(), getDirectoryList(), getFileList(), isSingleShardPathInternal(), preloadCache(), primeContainerCache(), primeFileCache(), and resolveStoragePathReal().

◆ resolveStoragePathReal()

FileBackendStore::resolveStoragePathReal ( $storagePath )

finalprotected

Like resolveStoragePath() except null values are returned if the container is sharded and the shard could not be determined or if the path ends with '/'.

The latter case is illegal for FS backends and can confuse listings for object store backends.

This function is used when resolving paths that must be valid locations for files. Directory and listing functions should generally just use resolveStoragePath() instead.

See also: FileBackendStore::resolveStoragePath()

Parameters

string $storagePath

Returns: array (container, path) or (null, null) if invalid

Definition at line 1469 of file FileBackendStore.php.

References list, and resolveStoragePath().

◆ sanitizeOpHeaders()

FileBackendStore::sanitizeOpHeaders ( array $op )

protected

Normalize and filter HTTP headers from a file operation.

This normalizes and strips long HTTP headers from a file operation. Most headers are just numbers, but some are allowed to be long. This function is useful for cleaning up headers and avoiding backend specific errors, especially in the middle of batch file operations.

Parameters

array $op Same format as doOperation()

Returns: array

Definition at line 1251 of file FileBackendStore.php.

References FileBackend\$name, and $value.

◆ setConcurrencyFlags()

FileBackendStore::setConcurrencyFlags ( array $opts )

finalprotected

Set the 'concurrency' option from a list of operation options.

Parameters

array $opts Map of operation options

Returns: array

Definition at line 1815 of file FileBackendStore.php.

References FileBackend\$concurrency.

Referenced by doOperationsInternal(), getFileContentsMulti(), getLocalCopyMulti(), and getLocalReferenceMulti().

◆ setContainerCache()

FileBackendStore::setContainerCache	(		$container,
		array	$val )

finalprotected

Set the cached info for a container.

Parameters

string	$container	Resolved container name
array	$val	Information to cache

Definition at line 1628 of file FileBackendStore.php.

References containerCacheKey().

Referenced by SwiftFileBackend\getContainerStat().

◆ setFileCache()

FileBackendStore::setFileCache	(		$path,
		array	$val )

finalprotected

Set the cached stat info for a file path.

Negatives (404s) are not cached. By not caching negatives, we can skip cache salting for the case when a file is created at a path were there was none before.

Parameters

string	$path	Storage path
array	$val	Stat information to cache

Definition at line 1711 of file FileBackendStore.php.

References fileCacheKey(), and FileBackend\normalizeStoragePath().

Referenced by getFileStat(), and preloadFileStat().

◆ storeInternal()

FileBackendStore::storeInternal ( array $params )

final

Store a file into the backend from a file on disk.

This will overwrite any file that exists at the destination. Do not call this function from places outside FileBackend and FileOp.

$params include:

src : source path on disk
dst : destination storage path
headers : HTTP header name/value map
async : StatusValue will be returned immediately if supported. If the StatusValue is OK, then its value field will be set to a FileBackendStoreOpHandle object.
dstExists : Whether a file exists at the destination (optimization). Callers can use "false" if no existing file is being changed.

Parameters

array $params

Returns: StatusValue

Definition at line 163 of file FileBackendStore.php.

References $params, clearCache(), deleteFileCache(), doStoreInternal(), maxFileSizeInternal(), FileBackend\newStatus(), and FileBackend\scopedProfileSection().

◆ streamFile()

FileBackendStore::streamFile ( array $params )

final

Stream the file at a storage path in the backend.

If the file does not exists, an HTTP 404 error will be given. Appropriate HTTP headers (Status, Content-Type, Content-Length) will be sent if streaming began, while none will be sent otherwise. Implementations should flush the output buffer before sending data.

Parameters

array

$params

Parameters include:

src : source storage path
headers : list of additional HTTP headers to send if the file exists
options : HTTP request header map with lower case keys (since 1.28). Supports: range : format is "bytes=(\\d*-\\d*)" if-modified-since : format is an HTTP date
headless : only include the body (and headers from "headers") (since 1.28)
latest : use the latest available data
allowOB : preserve any output buffers (since 1.28)

Returns: StatusValue

Reimplemented from FileBackend.

Definition at line 849 of file FileBackendStore.php.

References $params, doStreamFile(), FileBackend\newStatus(), print, and FileBackend\scopedProfileSection().

Member Data Documentation

◆ $cheapCache

ProcessCacheLRU FileBackendStore::$cheapCache

protected

Map of paths to small (RAM/disk) cache items.

Definition at line 44 of file FileBackendStore.php.

◆ $expensiveCache

ProcessCacheLRU FileBackendStore::$expensiveCache

protected

Map of paths to large (RAM/disk) cache items.

Definition at line 46 of file FileBackendStore.php.

◆ $maxFileSize

FileBackendStore::$maxFileSize = 4294967296

protected

Definition at line 54 of file FileBackendStore.php.

Referenced by maxFileSizeInternal().

◆ $memCache

WANObjectCache FileBackendStore::$memCache

protected

Definition at line 40 of file FileBackendStore.php.

◆ $mimeCallback

callable FileBackendStore::$mimeCallback

protected

Method to get the MIME type of files.

Definition at line 52 of file FileBackendStore.php.

◆ $shardViaHashLevels

array FileBackendStore::$shardViaHashLevels = []

protected

Map of container names to sharding config.

Definition at line 49 of file FileBackendStore.php.

◆ $srvCache

BagOStuff FileBackendStore::$srvCache

protected

Definition at line 42 of file FileBackendStore.php.

◆ CACHE_CHEAP_SIZE

const FileBackendStore::CACHE_CHEAP_SIZE = 500

Definition at line 57 of file FileBackendStore.php.

◆ CACHE_EXPENSIVE_SIZE

const FileBackendStore::CACHE_EXPENSIVE_SIZE = 5

Definition at line 58 of file FileBackendStore.php.

◆ CACHE_TTL

const FileBackendStore::CACHE_TTL = 10

Definition at line 56 of file FileBackendStore.php.

The documentation for this class was generated from the following file:

includes/libs/filebackend/FileBackendStore.php

Public Member Functions

Public Attributes

Protected Member Functions

Static Protected Member Functions

Protected Attributes

Private Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ __construct()

Member Function Documentation

◆ clearCache()

◆ concatenate()

◆ containerCacheKey()

◆ copyInternal()

◆ createInternal()

◆ deleteContainerCache()

◆ deleteFileCache()

◆ deleteInternal()

◆ describeInternal()

◆ directoriesAreVirtual()

◆ directoryExists()

◆ doClean()

◆ doCleanInternal()

◆ doClearCache()

◆ doConcatenate()

◆ doCopyInternal()

◆ doCreateInternal()

◆ doDeleteInternal()

◆ doDescribeInternal()

◆ doDirectoryExists()

◆ doExecuteOpHandlesInternal()

◆ doGetFileContentsMulti()

◆ doGetFileSha1Base36()

◆ doGetFileStat()

◆ doGetFileStatMulti()

◆ doGetFileXAttributes()

◆ doGetLocalCopyMulti()

◆ doGetLocalReferenceMulti()

◆ doMoveInternal()

◆ doOperationsInternal()

◆ doPrepare()

◆ doPrepareInternal()

◆ doPrimeContainerCache()

◆ doPublish()

◆ doPublishInternal()

◆ doQuickOperationsInternal()

◆ doSecure()

◆ doSecureInternal()

◆ doStoreInternal()

◆ doStreamFile()

◆ executeOpHandlesInternal()

◆ fileCacheKey()

◆ fileExists()

◆ fullContainerName()

◆ getContainerHashLevels()

◆ getContainerShard()

◆ getContainerSuffixes()

◆ getContentType()

◆ getDirectoryList()

◆ getDirectoryListInternal()

◆ getFileContentsMulti()

◆ getFileHttpUrl()

◆ getFileList()

◆ getFileListInternal()

◆ getFileProps()

◆ getFileSha1Base36()

◆ getFileSize()

◆ getFileStat()

◆ getFileTimestamp()

◆ getFileXAttributes()

◆ getLocalCopyMulti()

◆ getLocalReferenceMulti()

◆ getOperationsInternal()

◆ getPathsToLockForOpsInternal()

◆ getScopedLocksForOps()

◆ isPathUsableInternal()

◆ isSingleShardPathInternal()

◆ isValidContainerName()

◆ isValidShortContainerName()