MediaWiki  REL1_31
MemoryFileBackend Class Reference

Simulation of a backend storage in memory. More...

Inheritance diagram for MemoryFileBackend:
Collaboration diagram for MemoryFileBackend:

Public Member Functions

 getDirectoryListInternal ( $container, $dir, array $params)
 Do not call this function from places outside FileBackend. More...
 
 getFeatures ()
 Get the a bitfield of extra features supported by the backend medium. More...
 
 getFileListInternal ( $container, $dir, array $params)
 Do not call this function from places outside FileBackend. More...
 
 isPathUsableInternal ( $storagePath)
 Check if a file can be created or changed at a given storage path. More...
 
- Public Member Functions inherited from FileBackendStore
 __construct (array $config)
 
 clearCache (array $paths=null)
 Invalidate any in-process file stat and property cache. More...
 
 concatenate (array $params)
 Concatenate a list of storage files into a single file system file. More...
 
 copyInternal (array $params)
 Copy a file from one storage path to another in the backend. More...
 
 createInternal (array $params)
 Create a file in the backend with the given contents. More...
 
 deleteInternal (array $params)
 Delete a file at the storage path. More...
 
 describeInternal (array $params)
 Alter metadata for a file at the storage path. More...
 
 directoryExists (array $params)
 Check if a directory exists at a given storage path. More...
 
 executeOpHandlesInternal (array $fileOpHandles)
 Execute a list of FileBackendStoreOpHandle handles in parallel. More...
 
 fileExists (array $params)
 Check if a file exists at a storage path in the backend. More...
 
 getDirectoryList (array $params)
 Get an iterator to list all directories under a storage directory. More...
 
 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). More...
 
 getFileHttpUrl (array $params)
 
 getFileList (array $params)
 Get an iterator to list all stored files under a storage directory. More...
 
 getFileProps (array $params)
 Get the properties of the file at a storage path in the backend. More...
 
 getFileSha1Base36 (array $params)
 Get a SHA-1 hash of the file at a storage path in the backend. More...
 
 getFileSize (array $params)
 Get the size (bytes) of a file at a storage path in the backend. More...
 
 getFileStat (array $params)
 Get quick information about a file at a storage path in the backend. More...
 
 getFileTimestamp (array $params)
 Get the last-modified timestamp of the file at a storage path. More...
 
 getFileXAttributes (array $params)
 Get metadata about a file at a storage path in the backend. More...
 
 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). More...
 
 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). More...
 
 getOperationsInternal (array $ops)
 Return a list of FileOp objects from a list of operations. More...
 
 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. More...
 
 getScopedLocksForOps (array $ops, StatusValue $status)
 Get an array of scoped locks needed for a batch of file operations. More...
 
 isSingleShardPathInternal ( $storagePath)
 Check if a storage path maps to a single shard. More...
 
 maxFileSizeInternal ()
 Get the maximum allowable file size given backend medium restrictions and basic performance constraints. More...
 
 moveInternal (array $params)
 Move a file from one storage path to another in the backend. More...
 
 nullInternal (array $params)
 No-op file operation that does nothing. More...
 
 preloadCache (array $paths)
 Preload persistent file stat cache and property cache into in-process cache. More...
 
 preloadFileStat (array $params)
 Preload file stat information (concurrently if possible) into in-process cache. More...
 
 storeInternal (array $params)
 Store a file into the backend from a file on disk. More...
 
 streamFile (array $params)
 Stream the file at a storage path in the backend. More...
 
- Public Member Functions inherited from FileBackend
 clean (array $params)
 Delete a storage directory if it is empty. More...
 
 copy (array $params, array $opts=[])
 Performs a single copy operation. More...
 
 create (array $params, array $opts=[])
 Performs a single create operation. More...
 
 delete (array $params, array $opts=[])
 Performs a single delete operation. More...
 
 describe (array $params, array $opts=[])
 Performs a single describe operation. More...
 
 doOperation (array $op, array $opts=[])
 Same as doOperations() except it takes a single operation. More...
 
 doOperations (array $ops, array $opts=[])
 This is the main entry point into the backend for write operations. More...
 
 doQuickOperation (array $op)
 Same as doQuickOperations() except it takes a single operation. More...
 
 doQuickOperations (array $ops, array $opts=[])
 Perform a set of independent file operations on some files. More...
 
 getContainerStoragePath ( $container)
 Get the storage path for the given container for this backend. More...
 
 getDomainId ()
 Get the domain identifier used for this backend (possibly empty). More...
 
 getFileContents (array $params)
 Get the contents of a file at a storage path in the backend. More...
 
 getJournal ()
 Get the file journal object for this backend. More...
 
 getLocalCopy (array $params)
 Get a local copy on disk of the file at a storage path in the backend. More...
 
 getLocalReference (array $params)
 Returns a file system file, identical to the file at a storage path. More...
 
 getName ()
 Get the unique backend name. More...
 
 getReadOnlyReason ()
 Get an explanatory message if this backend is read-only. More...
 
 getRootStoragePath ()
 Get the root storage path of this backend. More...
 
 getScopedFileLocks (array $paths, $type, StatusValue $status, $timeout=0)
 Lock the files at the given storage paths in the backend. More...
 
 getTopDirectoryList (array $params)
 Same as FileBackend::getDirectoryList() except only lists directories that are immediately under the given directory. More...
 
 getTopFileList (array $params)
 Same as FileBackend::getFileList() except only lists files that are immediately under the given directory. More...
 
 getWikiId ()
 Alias to getDomainId() More...
 
 hasFeatures ( $bitfield)
 Check if the backend medium supports a field of extra features. More...
 
 isReadOnly ()
 Check if this backend is read-only. More...
 
 lockFiles (array $paths, $type, $timeout=0)
 Lock the files at the given storage paths in the backend. More...
 
 move (array $params, array $opts=[])
 Performs a single move operation. More...
 
 prepare (array $params)
 Prepare a storage directory for usage. More...
 
 publish (array $params)
 Remove measures to block web access to a storage directory and the container it belongs to. More...
 
 quickCopy (array $params)
 Performs a single quick copy operation. More...
 
 quickCreate (array $params)
 Performs a single quick create operation. More...
 
 quickDelete (array $params)
 Performs a single quick delete operation. More...
 
 quickDescribe (array $params)
 Performs a single quick describe operation. More...
 
 quickMove (array $params)
 Performs a single quick move operation. More...
 
 quickStore (array $params)
 Performs a single quick store operation. More...
 
 secure (array $params)
 Take measures to block web access to a storage directory and the container it belongs to. More...
 
 setLogger (LoggerInterface $logger)
 
 store (array $params, array $opts=[])
 Performs a single store operation. More...
 
 unlockFiles (array $paths, $type)
 Unlock the files at the given storage paths in the backend. More...
 

Protected Member Functions

 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. More...
 
 doCopyInternal (array $params)
 
 doCreateInternal (array $params)
 
 doDeleteInternal (array $params)
 
 doDirectoryExists ( $container, $dir, array $params)
 
 doGetFileStat (array $params)
 
 doGetLocalCopyMulti (array $params)
 
 doStoreInternal (array $params)
 
 resolveHashKey ( $storagePath)
 Get the absolute file system path for a storage path. More...
 
- Protected Member Functions inherited from FileBackendStore
 deleteContainerCache ( $container)
 Delete the cached info for a container. More...
 
 deleteFileCache ( $path)
 Delete the cached stat info for a file path. More...
 
 doClean (array $params)
 
 doCleanInternal ( $container, $dir, array $params)
 
 doClearCache (array $paths=null)
 Clears any additional stat caches for storage paths. More...
 
 doConcatenate (array $params)
 
 doDescribeInternal (array $params)
 
 doExecuteOpHandlesInternal (array $fileOpHandles)
 
 doGetFileContentsMulti (array $params)
 
 doGetFileSha1Base36 (array $params)
 
 doGetFileStatMulti (array $params)
 Get file stat information (concurrently if possible) for several files. More...
 
 doGetFileXAttributes (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. More...
 
 doPublish (array $params)
 
 doPublishInternal ( $container, $dir, array $params)
 
 doQuickOperationsInternal (array $ops)
 
 doSecure (array $params)
 
 doSecureInternal ( $container, $dir, array $params)
 
 doStreamFile (array $params)
 
 fullContainerName ( $container)
 Get the full container name, including the wiki ID prefix. More...
 
 getContainerHashLevels ( $container)
 Get the sharding config for a container. More...
 
 getContainerShard ( $container, $relPath)
 Get the container name shard suffix for a given path. More...
 
 getContainerSuffixes ( $container)
 Get a list of full container shard suffixes for a container. More...
 
 getContentType ( $storagePath, $content, $fsPath)
 Get the content type to use in HEAD/GET requests for a file. More...
 
 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. More...
 
 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. More...
 
 resolveContainerName ( $container)
 Resolve a container name, checking if it's allowed by the backend. More...
 
 resolveContainerPath ( $container, $relStoragePath)
 Resolve a relative storage path, checking if it's allowed by the backend. More...
 
 resolveStoragePath ( $storagePath)
 Splits a storage path into an internal container name, an internal relative file name, and a container shard suffix. More...
 
 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 '/'. More...
 
 sanitizeOpHeaders (array $op)
 Normalize and filter HTTP headers from a file operation. More...
 
 setConcurrencyFlags (array $opts)
 Set the 'concurrency' option from a list of operation options. More...
 
 setContainerCache ( $container, array $val)
 Set the cached info for a container. More...
 
 setFileCache ( $path, array $val)
 Set the cached stat info for a file path. More...
 
- Protected Member Functions inherited from FileBackend
 getScopedPHPBehaviorForOps ()
 Enter file operation scope. More...
 
 newStatus ()
 Yields the result of the status wrapper callback on either: More...
 
 resetOutputBuffer ()
 
 resolveFSFileObjects (array $ops)
 Convert FSFile 'src' paths to string paths (with an 'srcRef' field set to the FSFile) More...
 
 scopedProfileSection ( $section)
 
 wrapStatus (StatusValue $sv)
 

Protected Attributes

array $files = []
 Map of (file path => (data,mtime) More...
 
- Protected Attributes inherited from FileBackendStore
ProcessCacheLRU $cheapCache
 Map of paths to small (RAM/disk) cache items. More...
 
ProcessCacheLRU $expensiveCache
 Map of paths to large (RAM/disk) cache items. More...
 
 $maxFileSize = 4294967296
 
WANObjectCache $memCache
 
callable $mimeCallback
 Method to get the MIME type of files. More...
 
array $shardViaHashLevels = []
 Map of container names to sharding config. More...
 
BagOStuff $srvCache
 
- Protected Attributes inherited from FileBackend
int $concurrency
 How many operations can be done in parallel. More...
 
string $domainId
 Unique domain name. More...
 
FileJournal $fileJournal
 
LockManager $lockManager
 
LoggerInterface $logger
 
string $name
 Unique backend name. More...
 
callable $obResetFunc
 
string $parallelize
 When to do operations in parallel. More...
 
object string $profiler
 Class name or object With profileIn/profileOut methods. More...
 
string $readOnly
 Read-only explanation message. More...
 
callable $statusWrapper
 
callable $streamMimeFunc
 
string $tmpDirectory
 Temporary file directory. More...
 

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. More...
 
static isPathTraversalFree ( $path)
 Check if a relative path has no directory traversals. More...
 
static isStoragePath ( $path)
 Check if a given path is a "mwstore://" path. More...
 
static makeContentDisposition ( $type, $filename='')
 Build a Content-Disposition header value per RFC 6266. More...
 
static normalizeStoragePath ( $storagePath)
 Normalize a storage path by cleaning up directory separators. More...
 
static parentStoragePath ( $storagePath)
 Get the parent storage directory of a storage path. More...
 
static splitStoragePath ( $storagePath)
 Split a storage path into a backend name, a container name, and a relative file path. More...
 
- Public Attributes inherited from FileBackendStore
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. More...
 
const ATTR_METADATA = 2
 
const ATTR_UNICODE_PATHS = 4
 
- Static Protected Member Functions inherited from FileBackendStore
static isValidContainerName ( $container)
 Check if a full container name is valid. More...
 
static isValidShortContainerName ( $container)
 Check if a short container name is valid. More...
 
static normalizeXAttributes (array $xattr)
 Normalize file headers/metadata to the FileBackend::getFileXAttributes() format. More...
 
- Static Protected Member Functions inherited from FileBackend
static normalizeContainerPath ( $path)
 Validate and normalize a relative storage path. More...
 

Detailed Description

Simulation of a backend storage in memory.

All data in the backend is automatically deleted at the end of PHP execution. Since the data stored here is volatile, this is only useful for staging or testing.

Since
1.23

Definition at line 33 of file MemoryFileBackend.php.

Member Function Documentation

◆ directoriesAreVirtual()

MemoryFileBackend::directoriesAreVirtual ( )
protected

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 from FileBackendStore.

Definition at line 244 of file MemoryFileBackend.php.

◆ doCopyInternal()

MemoryFileBackend::doCopyInternal ( array  $params)
protected
See also
FileBackendStore::copyInternal()
Parameters
array$params
Returns
StatusValue

Reimplemented from FileBackendStore.

Definition at line 90 of file MemoryFileBackend.php.

References $params, files(), FileBackend\newStatus(), resolveHashKey(), and wfTimestamp().

◆ doCreateInternal()

MemoryFileBackend::doCreateInternal ( array  $params)
protected
See also
FileBackendStore::createInternal()
Parameters
array$params
Returns
StatusValue

Reimplemented from FileBackendStore.

Definition at line 45 of file MemoryFileBackend.php.

References $params, files(), FileBackend\newStatus(), resolveHashKey(), and wfTimestamp().

◆ doDeleteInternal()

MemoryFileBackend::doDeleteInternal ( array  $params)
protected
See also
FileBackendStore::deleteInternal()
Parameters
array$params
Returns
StatusValue

Reimplemented from FileBackendStore.

Definition at line 123 of file MemoryFileBackend.php.

References $params, files(), FileBackend\newStatus(), and resolveHashKey().

◆ doDirectoryExists()

MemoryFileBackend::doDirectoryExists (   $container,
  $dir,
array  $params 
)
protected
See also
FileBackendStore::directoryExists()
Parameters
string$containerResolved container name
string$dirResolved path relative to container
array$params
Returns
bool|null

Reimplemented from FileBackendStore.

Definition at line 185 of file MemoryFileBackend.php.

References $path, as, and files().

◆ doGetFileStat()

MemoryFileBackend::doGetFileStat ( array  $params)
protected
See also
FileBackendStore::getFileStat()
Parameters
array$params

Reimplemented from FileBackendStore.

Definition at line 146 of file MemoryFileBackend.php.

References files(), and resolveHashKey().

◆ doGetLocalCopyMulti()

MemoryFileBackend::doGetLocalCopyMulti ( array  $params)
protected
See also
FileBackendStore::getLocalCopyMulti()
Parameters
array$params
Returns
array

Reimplemented from FileBackendStore.

Reimplemented in MockFileBackend.

Definition at line 162 of file MemoryFileBackend.php.

References $ext, $params, as, FileBackend\extensionFromPath(), TempFSFile\factory(), files(), and resolveHashKey().

◆ doStoreInternal()

MemoryFileBackend::doStoreInternal ( array  $params)
protected
See also
FileBackendStore::storeInternal()
Parameters
array$params
Returns
StatusValue

Reimplemented from FileBackendStore.

Definition at line 63 of file MemoryFileBackend.php.

References $params, files(), FileBackend\newStatus(), resolveHashKey(), and wfTimestamp().

◆ getDirectoryListInternal()

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

Do not call this function from places outside FileBackend.

See also
FileBackendStore::getDirectoryList()
Parameters
string$containerResolved container name
string$dirResolved path relative to container
array$params
Returns
Traversable|array|null Returns null on failure

Reimplemented from FileBackendStore.

Definition at line 196 of file MemoryFileBackend.php.

References $dirs, $params, $path, as, and files().

◆ getFeatures()

MemoryFileBackend::getFeatures ( )

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

Returns
int Bitfield of FileBackend::ATTR_* flags
Since
1.23

Reimplemented from FileBackend.

Definition at line 37 of file MemoryFileBackend.php.

References FileBackend\ATTR_UNICODE_PATHS.

◆ getFileListInternal()

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

Do not call this function from places outside FileBackend.

See also
FileBackendStore::getFileList()
Parameters
string$containerResolved container name
string$dirResolved path relative to container
array$params
Returns
Traversable|array|null Returns null on failure

Reimplemented from FileBackendStore.

Definition at line 225 of file MemoryFileBackend.php.

References $files, $params, $path, as, and files().

◆ isPathUsableInternal()

MemoryFileBackend::isPathUsableInternal (   $storagePath)

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 from FileBackendStore.

Definition at line 41 of file MemoryFileBackend.php.

◆ resolveHashKey()

MemoryFileBackend::resolveHashKey (   $storagePath)
protected

Get the absolute file system path for a storage path.

Parameters
string$storagePathStorage path
Returns
string|null

Definition at line 254 of file MemoryFileBackend.php.

References list, and FileBackendStore\resolveStoragePathReal().

Referenced by doCopyInternal(), doCreateInternal(), doDeleteInternal(), doGetFileStat(), doGetLocalCopyMulti(), and doStoreInternal().

Member Data Documentation

◆ $files

array MemoryFileBackend::$files = []
protected

Map of (file path => (data,mtime)

Definition at line 35 of file MemoryFileBackend.php.

Referenced by getFileListInternal().


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