Maintenance script that sends purge requests for pages edited in a date range to squid/varnish. More...

Inheritance diagram for PurgeChangedPages:

Collaboration diagram for PurgeChangedPages:

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Public Member Functions
	__construct ()
	Default constructor.

	execute ()
	Do the actual work.

Public Member Functions inherited from Maintenance
	checkRequiredExtensions ()
	Verify that the required extensions are installed.

	cleanupChanneled ()
	Clean up channeled output.

	clearParamsAndArgs ()
	Clear all params and arguments.

	finalSetup ()
	Handle some last-minute setup here.

	getConfig ()

	getDbType ()
	Does the script need different DB access? By default, we give Maintenance scripts normal rights to the DB.

	getName ()
	Get the script's name.

	globals ()
	Potentially debug globals.

	isQuiet ()

	loadParamsAndArgs ( $self=null, $opts=null, $args=null)
	Process command line arguments $mOptions becomes an array with keys set to the option names $mArgs becomes a zero-based array containing the non-option arguments.

	loadSettings ()
	Generic setup for most installs.

	loadWithArgv ( $argv)
	Load params and arguments from a given array of command-line arguments.

	memoryLimit ()
	Normally we disable the memory_limit when running admin scripts.

	outputChanneled ( $msg, $channel=null)
	Message outputter with channeled message support.

	purgeRedundantText ( $delete=true)
	Support function for cleaning up redundant text records.

	runChild ( $maintClass, $classFile=null)
	Run a child maintenance script.

	setAgentAndTriggers ()
	Set triggers like when to try to run deferred updates.

	setConfig (Config $config)

	setDB (IMaintainableDatabase $db)
	Sets database object to be returned by getDB().

	setup ()
	Do some sanity checking and basic setup.

	updateSearchIndex ( $maxLockTime, $callback, $dbw, $results)
	Perform a search index update with locking.

	updateSearchIndexForPage (int $pageId)
	Update the searchindex table for a given pageid.

	validateParamsAndArgs ()
	Run some validation checks on the params, etc Stable for overriding.

Protected Member Functions
	pageableSortedRows (IResultWrapper $res, $column, $limit)
	Remove all the rows in a result set with the highest value for column $column unless the number of rows is less $limit.

Protected Member Functions inherited from Maintenance
	activateProfiler ()
	Activate the profiler (assuming $wgProfiler is set)

	addArg ( $arg, $description, $required=true)
	Add some args that are needed.

	addDefaultParams ()
	Add the default parameters to the scripts.

	addDescription ( $text)
	Set the description text.

	addOption ( $name, $description, $required=false, $withArg=false, $shortName=false, $multiOccurrence=false)
	Add a parameter to the script.

	adjustMemoryLimit ()
	Adjusts PHP's memory limit to better suit our needs, if needed.

	afterFinalSetup ()
	Execute a callback function at the end of initialisation Stable for overriding.

	beginTransaction (IDatabase $dbw, $fname)
	Begin a transcation on a DB.

	commitTransaction (IDatabase $dbw, $fname)
	Commit the transcation on a DB handle and wait for replica DBs to catch up.

	countDown ( $seconds)
	Count down from $seconds to zero on the terminal, with a one-second pause between showing each number.

	deleteOption ( $name)
	Remove an option.

	error ( $err, $die=0)
	Throw an error to the user.

	fatalError ( $msg, $exitCode=1)
	Output a message and terminate the current script.

	getArg ( $argId=0, $default=null)
	Get an argument.

	getBatchSize ()
	Returns batch size.

	getDB ( $db, $groups=[], $dbDomain=false)
	Returns a database to be used by current maintenance script.

	getDir ()
	Get the maintenance directory.

	getHookContainer ()
	Get a HookContainer, for running extension hooks or for hook metadata.

	getHookRunner ()
	Get a HookRunner for running core hooks.

	getOption ( $name, $default=null)
	Get an option, or return the default.

	getStdin ( $len=null)
	Return input from stdin.

	hasArg ( $argId=0)
	Does a given argument exist?

	hasOption ( $name)
	Checks to see if a particular option was set.

	loadSpecialVars ()
	Handle the special variables that are global to all scripts Stable for overriding.

	maybeHelp ( $force=false)
	Maybe show the help.

	output ( $out, $channel=null)
	Throw some output to the user.

	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).

	requireExtension ( $name)
	Indicate that the specified extension must be loaded before the script can run.

	rollbackTransaction (IDatabase $dbw, $fname)
	Rollback the transcation on a DB handle.

	setAllowUnregisteredOptions ( $allow)
	Sets whether to allow unregistered options, which are options passed to a script that do not match an expected parameter.

	setBatchSize ( $s=0)
	Set the batch size.

	showHelp ()
	Definitely show the help.

	supportsOption ( $name)
	Checks to see if a particular option in supported.

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).

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.

static	readconsole ( $prompt='> ')
	Prompt the console for input.

static	requireTestsAutoloader ()
	Call this to set up the autoloader to allow classes to be used from the tests directory.

static	setLBFactoryTriggers (LBFactory $LBFactory, Config $config)

static	shouldExecute ()
	Should we execute the maintenance script, or just allow it to be included as a standalone class? It checks that the call stack only includes this function and "requires" (meaning was called from the file scope)

Public Attributes inherited from Maintenance
resource	$fileHandle
	Used when creating separate schema files.

array	$orderedOptions = []
	Used to read the options in the order they were passed.

const	DB_ADMIN = 2

const	DB_NONE = 0
	Constants for DB access type.

const	DB_STD = 1

const	STDIN_ALL = 'all'

Protected Attributes inherited from Maintenance
	$mAllowUnregisteredOptions = false

	$mArgList = []

	$mArgs = []

int	$mBatchSize = null
	Batch size.

	$mDbPass

	$mDbUser

	$mDescription = ''

	$mInputLoaded = false

	$mOptions = []

array[]	$mParams = []
	Array of desired/allowed params.

	$mQuiet = false

	$mSelf

	$mShortParamsMap = []

Detailed Description

Maintenance script that sends purge requests for pages edited in a date range to squid/varnish.

Can be used to recover from an HTCP message partition or other major cache layer interruption.

Definition at line 38 of file purgeChangedPages.php.

Constructor & Destructor Documentation

◆ __construct()

PurgeChangedPages::__construct ( )

Default constructor.

Children should call this first if implementing their own constructors

Stable for calling

Reimplemented from Maintenance.

Definition at line 40 of file purgeChangedPages.php.

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

Member Function Documentation

◆ execute()

PurgeChangedPages::execute ( )

Do the actual work.

All child classes will need to implement this

Returns: 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 52 of file purgeChangedPages.php.

References $dbr, $res, $title, $wgHTCPRouting, DB_REPLICA, Maintenance\error(), Maintenance\getBatchSize(), getDB(), Maintenance\getOption(), Maintenance\hasOption(), Maintenance\maybeHelp(), Maintenance\output(), and pageableSortedRows().

◆ pageableSortedRows()

PurgeChangedPages::pageableSortedRows	(	IResultWrapper	$res,
			$column,
			$limit
	)

protected

Remove all the rows in a result set with the highest value for column $column unless the number of rows is less $limit.

This returns the new array of rows and the highest value of column $column for the rows left. The ordering of rows is maintained.

This is useful for paging on mostly-unique values that may sometimes have large clumps of identical values. It should be safe to do the next query on items with a value higher than the highest of the rows returned here. If this returns an empty array for a non-empty query result, then all the rows had the same column value and the query should be repeated with a higher LIMIT.

Todo:: move this elsewhere

Parameters

IResultWrapper	$res	Query result sorted by $column (ascending)
string	$column
int	$limit

Returns: array (array of rows, string column value)

Definition at line 172 of file purgeChangedPages.php.

References $res.

Referenced by execute().

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

maintenance/purgeChangedPages.php

Public Member Functions