MediaWiki  master
CopyFileBackend Class Reference

Copy all files in one container of one backend to another. More...

Inheritance diagram for CopyFileBackend:
Collaboration diagram for CopyFileBackend:

Public Member Functions

 __construct ()
 Default constructor. More...
 execute ()
 Do the actual work. More...
- Public Member Functions inherited from Maintenance
 canExecuteWithoutLocalSettings ()
 Whether this script can run without LocalSettings.php. More...
 checkRequiredExtensions ()
 Verify that the required extensions are installed. More...
 cleanupChanneled ()
 Clean up channeled output. More...
 clearParamsAndArgs ()
 Clear all params and arguments. More...
 finalSetup (SettingsBuilder $settingsBuilder=null)
 Handle some last-minute setup here. More...
 getConfig ()
 getDbType ()
 Does the script need different DB access? By default, we give Maintenance scripts normal rights to the DB. More...
 getName ()
 Get the script's name. More...
 getParameters ()
 getServiceContainer ()
 Returns the main service container. More...
 globals ()
 Potentially debug globals. More...
 isQuiet ()
 loadParamsAndArgs ( $self=null, $opts=null, $args=null)
 Process command line arguments when running as a child script. More...
 loadSettings ()
 loadWithArgv ( $argv)
 Load params and arguments from a given array of command-line arguments. More...
 memoryLimit ()
 Normally we disable the memory_limit when running admin scripts. More...
 outputChanneled ( $msg, $channel=null)
 Message outputter with channeled message support. More...
 purgeRedundantText ( $delete=true)
 Support function for cleaning up redundant text records. More...
 runChild ( $maintClass, $classFile=null)
 Run a child maintenance script. More...
 setAgentAndTriggers ()
 This method used to be for internal use by doMaintenance.php to apply some optional global state to LBFactory for debugging purposes. More...
 setArg ( $argId, $value)
 Programmatically set the value of the given argument. More...
 setConfig (Config $config)
 setDB (IMaintainableDatabase $db)
 Sets database object to be returned by getDB(). More...
 setName (string $name)
 setOption (string $name, $value)
 Programmatically set the value of the given option. More...
 setup ()
 Provides subclasses with an opportunity to perform initial checks. More...
 shutdown ()
 Call before exiting CLI process for the last DB commit, and flush any remaining buffers and other deferred work. More...
 validateParamsAndArgs ()
 Run some validation checks on the params, etc @stable to override. More...

Protected Member Functions

 copyFileBatch (array $srcPathsRel, $backendRel, FileBackend $src, FileBackend $dst)
 delFileBatch (array $dstPathsRel, $backendRel, FileBackend $dst)
 filesAreSame (FileBackend $src, FileBackend $dst, $sPath, $dPath)
 getListingDiffRel (FileBackend $src, FileBackend $dst, $backendRel)
- Protected Member Functions inherited from Maintenance
 addArg ( $arg, $description, $required=true, $multi=false)
 Add some args that are needed. More...
 addDefaultParams ()
 Add the default parameters to the scripts. More...
 addDescription ( $text)
 Set the description text. More...
 addOption ( $name, $description, $required=false, $withArg=false, $shortName=false, $multiOccurrence=false)
 Add a parameter to the script. More...
 adjustMemoryLimit ()
 Adjusts PHP's memory limit to better suit our needs, if needed. More...
 afterFinalSetup ()
 Override to perform any required operation at the end of initialisation. More...
 beginTransaction (IDatabase $dbw, $fname)
 Begin a transaction on a DB. More...
 commitTransaction (IDatabase $dbw, $fname)
 Commit the transaction on a DB handle and wait for replica DBs to catch up. More...
 countDown ( $seconds)
 Count down from $seconds to zero on the terminal, with a one-second pause between showing each number. More...
 deleteOption ( $name)
 Remove an option. More...
 error ( $err, $die=0)
 Throw an error to the user. More...
 fatalError ( $msg, $exitCode=1)
 Output a message and terminate the current script. More...
 getArg ( $argId=0, $default=null)
 Get an argument. More...
 getArgs ( $offset=0)
 Get arguments. More...
 getBatchSize ()
 Returns batch size. More...
 getDB ( $db, $groups=[], $dbDomain=false)
 Returns a database to be used by current maintenance script. More...
 getDir ()
 Get the maintenance directory. More...
 getHookContainer ()
 Get a HookContainer, for running extension hooks or for hook metadata. More...
 getHookRunner ()
 Get a HookRunner for running core hooks. More...
 getOption ( $name, $default=null)
 Get an option, or return the default. More...
 getStdin ( $len=null)
 Return input from stdin. More...
 hasArg ( $argId=0)
 Does a given argument exist? More...
 hasOption ( $name)
 Checks to see if a particular option was set. More...
 loadSpecialVars ()
 Handle the special variables that are global to all scripts @stable to override. More...
 maybeHelp ( $force=false)
 Maybe show the help. More...
 output ( $out, $channel=null)
 Throw some output to the user. More...
 parseIntList ( $text)
 Utility function to parse a string (perhaps from a command line option) into a list of integers (perhaps some kind of numeric IDs). More...
 requireExtension ( $name)
 Indicate that the specified extension must be loaded before the script can run. More...
 rollbackTransaction (IDatabase $dbw, $fname)
 Rollback the transaction on a DB handle. More...
 setAllowUnregisteredOptions ( $allow)
 Sets whether to allow unregistered options, which are options passed to a script that do not match an expected parameter. More...
 setBatchSize ( $s=0)
 showHelp ()
 Definitely show the help. More...
 supportsOption ( $name)
 Checks to see if a particular option in supported. More...
 validateUserOption ( $errorMsg)
 waitForReplication ()
 Wait for replica DBs to catch up. More...

Protected Attributes

array null $statCache = null
 (path sha1 => stat) Pre-computed dst stat entries from listings More...
- Protected Attributes inherited from Maintenance
array $mArgList = []
 Empty. More...
array $mArgs = []
 This is the list of arguments that were actually passed. More...
int null $mBatchSize = null
 Batch size. More...
string $mDescription = ''
 A description of the script, children should change this via addDescription() More...
bool $mInputLoaded = false
 Have we already loaded our user input? More...
array $mOptions = []
 This is the list of options that were actually passed. More...
array[] $mParams = []
 Empty. More...
bool $mQuiet = false
 Special vars for params that are always used. More...
string null $mSelf
 Name of the script currently running. More...
MaintenanceParameters $parameters

Additional Inherited Members

- Static Public Member Functions inherited from Maintenance
static getTermSize ()
 Get the terminal size as a two-element array where the first element is the width (number of columns) and the second element is the height (number of rows). More...
static posix_isatty ( $fd)
 Wrapper for posix_isatty() We default as considering stdin a tty (for nice readline methods) but treating stout as not a tty to avoid color codes. More...
static readconsole ( $prompt='> ')
 Prompt the console for input. More...
static requireTestsAutoloader ()
 Call this to set up the autoloader to allow classes to be used from the tests directory. More...
static shouldExecute ()
- Public Attributes inherited from Maintenance
resource null $fileHandle
 Used when creating separate schema files. More...
array $orderedOptions = []
 Used to read the options in the order they were passed. More...
const DB_ADMIN = 2
const DB_NONE = 0
 Constants for DB access type. More...
const DB_STD = 1
const GENERIC_MAINTENANCE_PARAMETERS = 'Script runner options'
const SCRIPT_DEPENDENT_PARAMETERS = 'Common options'
const STDIN_ALL = -1

Detailed Description

Copy all files in one container of one backend to another.

This can also be used to re-shard the files for one backend using the config of second backend. The second backend should have the same config as the first, except for it having a different name and different sharding configuration. The backend should be made read-only while this runs. After this script finishes, the old files in the containers can be deleted.

Definition at line 39 of file copyFileBackend.php.

Constructor & Destructor Documentation

◆ __construct()

CopyFileBackend::__construct ( )

Default constructor.

Children should call this first if implementing their own constructors

Stability: stable
to call

Reimplemented from Maintenance.

Definition at line 43 of file copyFileBackend.php.

References Maintenance\addDescription(), Maintenance\addOption(), and Maintenance\setBatchSize().

Member Function Documentation

◆ copyFileBatch()

◆ delFileBatch()

CopyFileBackend::delFileBatch ( array  $dstPathsRel,
FileBackend  $dst 

Definition at line 297 of file copyFileBackend.php.

References FileBackend\doQuickOperations(), Maintenance\error(), Maintenance\fatalError(), FileBackend\getDomainId(), FileBackend\getRootStoragePath(), Maintenance\output(), and Status\wrap().

Referenced by execute().

◆ execute()

CopyFileBackend::execute ( )

Do the actual work.

All child classes will need to implement this

bool|null|void True for success, false for failure. Not returning a value, or returning null, is also interpreted as success. Returning false for failure will cause doMaintenance.php to exit the process with a non-zero exit status.

Reimplemented from Maintenance.

Definition at line 59 of file copyFileBackend.php.

References $path, copyFileBatch(), delFileBatch(), Maintenance\fatalError(), Maintenance\getBatchSize(), getListingDiffRel(), Maintenance\getOption(), Maintenance\hasOption(), Maintenance\output(), and Maintenance\setBatchSize().

◆ filesAreSame()

CopyFileBackend::filesAreSame ( FileBackend  $src,
FileBackend  $dst,

Definition at line 335 of file copyFileBackend.php.

References FileBackend\getFileSha1Base36(), FileBackend\getFileStat(), and Maintenance\hasOption().

Referenced by copyFileBatch().

◆ getListingDiffRel()

CopyFileBackend::getListingDiffRel ( FileBackend  $src,
FileBackend  $dst,
string[] (rel paths in $src minus those in $dst)

Definition at line 174 of file copyFileBackend.php.

References Maintenance\fatalError(), FileBackend\getFileList(), and FileBackend\getRootStoragePath().

Referenced by execute().

Member Data Documentation

◆ $statCache

array null CopyFileBackend::$statCache = null

(path sha1 => stat) Pre-computed dst stat entries from listings

Definition at line 41 of file copyFileBackend.php.

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