Maintenance script that moves blobs indexed by trackBlobs.php to a specified list of destination clusters, and recompresses them in the process. More...

Public Member Functions
	__construct ($options)

	checkTrackingTable ()
	Make sure the tracking table exists and isn't empty. More...

	critical ($msg)

	debug ($msg)

	dispatch ()
	Dispatch a command to the next available slave. More...

	dispatchToSlave ($slaveId, $args)
	Dispatch a command to a specified slave. More...

	doAllOrphans ()
	Move all orphan text to the new clusters. More...

	doAllPages ()
	Move all tracked pages to the new clusters. More...

	doOrphanList ($textIds)
	Move an orphan text_id to the new cluster. More...

	doPage ($pageId)
	Move tracked text in a given page. More...

	execute ()
	Execute parent or child depending on the isChild option. More...

	executeChild ()
	Main entry point for worker processes. More...

	executeParent ()
	Execute the parent process. More...

	finishIncompleteMoves ($conds)
	Moves are done in two phases: bt_new_url and then bt_moved. More...

	getExtDB ($cluster)
	Gets a DB master connection for the given external cluster name. More...

	getTargetCluster ()
	Returns the name of the next target cluster. More...

	info ($msg)

	killSlaveProcs ()
	Gracefully terminate the child processes. More...

	logToFile ($msg, $file)

	moveTextRow ($textId, $url)
	Atomic move operation. More...

	report ($label, $current, $end)
	Display a progress report. More...

	startSlaveProcs ()
	Start the worker processes. More...

	syncDBs ()
	Wait until the selected slave has caught up to the master. More...

Static Public Member Functions
static static	getOptionsWithArgs ()

static	newFromCommandLine ($args, $options)

Public Attributes
	$batchSize = 1000

	$copyOnly = false

	$criticalLog

	$debugLog

	$destClusters

	$infoLog

	$isChild = false

	$noCount = false

	$numBatches = 0

	$numProcs = 1

	$orphanBatchSize = 1000

	$orphanBlobClass

	$pageBlobClass

	$prevSlaveId

	$reportingInterval = 10

	$slaveId = false

	$slavePipes

	$slaveProcs

	$store

	$useDiff

Static Private Attributes
static	$cmdLineOptionMap

static	$optionsWithArgs

Detailed Description

Maintenance script that moves blobs indexed by trackBlobs.php to a specified list of destination clusters, and recompresses them in the process.

Definition at line 55 of file recompressTracked.php.

Constructor & Destructor Documentation

RecompressTracked::__construct ( $options )

Definition at line 105 of file recompressTracked.php.

References $GLOBALS, $name, $options, $value, as, and store.

Member Function Documentation

RecompressTracked::checkTrackingTable ( )

Make sure the tracking table exists and isn't empty.

Returns: bool

Definition at line 192 of file recompressTracked.php.

References $dbr, critical(), DB_SLAVE, info(), and wfGetDB().

Referenced by executeParent().

RecompressTracked::critical ( $msg )

Definition at line 134 of file recompressTracked.php.

References logToFile().

Referenced by checkTrackingTable(), dispatch(), doOrphanList(), doPage(), killSlaveProcs(), moveTextRow(), and startSlaveProcs().

RecompressTracked::debug ( $msg )

Definition at line 120 of file recompressTracked.php.

References logToFile(), and wfDebug().

Referenced by doOrphanList(), doPage(), executeChild(), and finishIncompleteMoves().

RecompressTracked::dispatch ( )

Dispatch a command to the next available slave.

This may block until a slave finishes its work and becomes available.

Definition at line 272 of file recompressTracked.php.

References $args, $numProcs, $slaveId, $slavePipes, critical(), and dispatchToSlave().

Referenced by doAllPages().

RecompressTracked::dispatchToSlave	(	$slaveId,
		$args
	)

Dispatch a command to a specified slave.

Parameters

int	$slaveId
array \| string	$args

Definition at line 298 of file recompressTracked.php.

References $args, $slaveId, and array().

Referenced by dispatch(), and killSlaveProcs().

RecompressTracked::doAllOrphans ( )

Move all orphan text to the new clusters.

Definition at line 376 of file recompressTracked.php.

References $args, $batchSize, $dbr, $orphanBatchSize, $res, as, DB_SLAVE, info(), report(), and wfGetDB().

Referenced by executeParent().

RecompressTracked::doAllPages ( )

Move all tracked pages to the new clusters.

Definition at line 307 of file recompressTracked.php.

References $batchSize, $dbr, $res, as, DB_SLAVE, dispatch(), info(), is(), query, report(), so, that, the, and wfGetDB().

Referenced by executeParent().

RecompressTracked::doOrphanList ( $textIds )

Move an orphan text_id to the new cluster.

Parameters

array $textIds

Definition at line 653 of file recompressTracked.php.

References $res, as, critical(), DB_SLAVE, debug(), finishIncompleteMoves(), Revision\getRevisionText(), syncDBs(), wfGetDB(), and wfWaitForSlaves().

Referenced by executeChild().

RecompressTracked::doPage ( $pageId )

Move tracked text in a given page.

Parameters

int $pageId

Definition at line 476 of file recompressTracked.php.

References $batchSize, $dbr, $res, $title, as, critical(), DB_SLAVE, debug(), finishIncompleteMoves(), Revision\getRevisionText(), Title\newFromID(), syncDBs(), wfGetDB(), and wfWaitForSlaves().

Referenced by executeChild().

RecompressTracked::execute ( )

Execute parent or child depending on the isChild option.

Definition at line 165 of file recompressTracked.php.

References executeChild(), and executeParent().

RecompressTracked::executeChild ( )

Main entry point for worker processes.

Definition at line 445 of file recompressTracked.php.

References $args, $line, debug(), doOrphanList(), doPage(), syncDBs(), and wfWaitForSlaves().

Referenced by execute().

RecompressTracked::executeParent ( )

Execute the parent process.

Definition at line 176 of file recompressTracked.php.

References checkTrackingTable(), doAllOrphans(), doAllPages(), killSlaveProcs(), startSlaveProcs(), and syncDBs().

Referenced by execute().

RecompressTracked::finishIncompleteMoves ( $conds )

Moves are done in two phases: bt_new_url and then bt_moved.

bt_new_url indicates that the text has been copied to the new cluster.
bt_moved indicates that the text table has been updated.

This function completes any moves that only have done bt_new_url. This can happen when the script is interrupted, or when –copy-only is used.

Parameters

array $conds

Definition at line 592 of file recompressTracked.php.

References $dbr, $res, as, DB_SLAVE, debug(), moveTextRow(), wfGetDB(), and wfWaitForSlaves().

Referenced by doOrphanList(), and doPage().

RecompressTracked::getExtDB ( $cluster )

Gets a DB master connection for the given external cluster name.

Parameters

string $cluster

Returns: DatabaseBase

Definition at line 642 of file recompressTracked.php.

References DB_MASTER, and wfGetLBFactory().

static static RecompressTracked::getOptionsWithArgs ( )

static

Definition at line 90 of file recompressTracked.php.

References $optionsWithArgs.

RecompressTracked::getTargetCluster ( )

Returns the name of the next target cluster.

Returns: string

Definition at line 628 of file recompressTracked.php.

RecompressTracked::info ( $msg )

Definition at line 127 of file recompressTracked.php.

References logToFile().

Referenced by checkTrackingTable(), doAllOrphans(), doAllPages(), killSlaveProcs(), and report().

RecompressTracked::killSlaveProcs ( )

Gracefully terminate the child processes.

Definition at line 254 of file recompressTracked.php.

References $numProcs, $status, critical(), dispatchToSlave(), and info().

Referenced by executeParent().

RecompressTracked::logToFile	(	$msg,
		$file
	)

Definition at line 141 of file recompressTracked.php.

References wfHostname(), and wfWikiID().

Referenced by critical(), debug(), and info().

RecompressTracked::moveTextRow	(	$textId,
		$url
	)

Atomic move operation.

Write the new URL to the text table and set the bt_moved flag.

This is done in a single transaction to provide restartable behavior without data loss.

The transaction is kept short to reduce locking.

Parameters

int	$textId
string	$url

Definition at line 557 of file recompressTracked.php.

References critical(), DB_MASTER, and wfGetDB().

Referenced by finishIncompleteMoves().

static RecompressTracked::newFromCommandLine	(	$args,
		$options
	)

static

Definition at line 94 of file recompressTracked.php.

References $args, $options, and as.

RecompressTracked::report	(	$label,
		$current,
		$end
	)

Display a progress report.

Parameters

string	$label
int	$current
int	$end

Definition at line 364 of file recompressTracked.php.

References info(), and wfWaitForSlaves().

Referenced by doAllOrphans(), and doAllPages().

RecompressTracked::startSlaveProcs ( )

Start the worker processes.

These processes will listen on stdin for commands. This necessary because text recompression is slow: loading, compressing and writing are all slow.

Definition at line 215 of file recompressTracked.php.

References $numProcs, $optionsWithArgs, as, critical(), wfEscapeShellArg(), and wfWikiID().

Referenced by executeParent().

RecompressTracked::syncDBs ( )

Wait until the selected slave has caught up to the master.

This allows us to use the slave for things that were committed in a previous part of this batch process.

Definition at line 155 of file recompressTracked.php.

References $dbr, DB_MASTER, DB_SLAVE, and wfGetDB().

Referenced by doOrphanList(), doPage(), executeChild(), and executeParent().

Member Data Documentation

RecompressTracked::$batchSize = 1000

Definition at line 57 of file recompressTracked.php.

Referenced by doAllOrphans(), doAllPages(), and doPage().

RecompressTracked::$cmdLineOptionMap

staticprivate

Initial value:

= [

'no-count' => 'noCount'

Definition at line 79 of file recompressTracked.php.

RecompressTracked::$copyOnly = false

Definition at line 64 of file recompressTracked.php.

RecompressTracked::$criticalLog

Definition at line 68 of file recompressTracked.php.

RecompressTracked::$debugLog

Definition at line 68 of file recompressTracked.php.

RecompressTracked::$destClusters

Definition at line 56 of file recompressTracked.php.

RecompressTracked::$infoLog

Definition at line 68 of file recompressTracked.php.

RecompressTracked::$isChild = false

Definition at line 65 of file recompressTracked.php.

RecompressTracked::$noCount = false

Definition at line 67 of file recompressTracked.php.

RecompressTracked::$numBatches = 0

Definition at line 61 of file recompressTracked.php.

RecompressTracked::$numProcs = 1

Definition at line 60 of file recompressTracked.php.

Referenced by dispatch(), killSlaveProcs(), and startSlaveProcs().

RecompressTracked::$optionsWithArgs

staticprivate

Initial value:

= [
        'procs',
        'slave-id',
        'debug-log',
        'info-log',
        'critical-log'
    ]

Definition at line 71 of file recompressTracked.php.

RecompressTracked::$orphanBatchSize = 1000

Definition at line 58 of file recompressTracked.php.

Referenced by doAllOrphans().

RecompressTracked::$orphanBlobClass

Definition at line 62 of file recompressTracked.php.

RecompressTracked::$pageBlobClass

Definition at line 62 of file recompressTracked.php.

RecompressTracked::$prevSlaveId

Definition at line 63 of file recompressTracked.php.

RecompressTracked::$reportingInterval = 10

Definition at line 59 of file recompressTracked.php.

RecompressTracked::$slaveId = false

Definition at line 66 of file recompressTracked.php.

Referenced by dispatch(), and dispatchToSlave().

RecompressTracked::$slavePipes

Definition at line 63 of file recompressTracked.php.

Referenced by dispatch().

RecompressTracked::$slaveProcs

Definition at line 63 of file recompressTracked.php.

RecompressTracked::$store

Definition at line 69 of file recompressTracked.php.

RecompressTracked::$useDiff

Definition at line 62 of file recompressTracked.php.

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

maintenance/storage/recompressTracked.php

Public Member Functions

Static Public Member Functions

Public Attributes

Static Private Attributes

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation