MediaWiki  1.23.0
PurgeChangedPages Class Reference

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:

Public Member Functions

 __construct ()
 Default constructor. More...
 
 execute ()
 Do the actual work. More...
 
- Public Member Functions inherited from Maintenance
 cleanupChanneled ()
 Clean up channeled output. More...
 
 clearParamsAndArgs ()
 Clear all params and arguments. More...
 
 finalSetup ()
 Handle some last-minute setup here. More...
 
 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...
 
 globals ()
 Potentially debug globals. More...
 
 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. More...
 
 loadSettings ()
 Generic setup for most installs. 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...
 
 setDB (&$db)
 Sets database object to be returned by getDB(). More...
 
 setup ()
 Do some sanity checking and basic setup. More...
 
 updateSearchIndex ( $maxLockTime, $callback, $dbw, $results)
 Perform a search index update with locking. More...
 
 updateSearchIndexForPage ( $dbw, $pageId)
 Update the searchindex table for a given pageid. More...
 

Protected Member Functions

 pageableSortedRows (ResultWrapper $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. More...
 
- Protected Member Functions inherited from Maintenance
 addArg ( $arg, $description, $required=true)
 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)
 Add a parameter to the script. More...
 
 adjustMemoryLimit ()
 Adjusts PHP's memory limit to better suit our needs, if needed. More...
 
 afterFinalSetup ()
 Execute a callback function at the end of initialisation. More...
 
 deleteOption ( $name)
 Remove an option. More...
 
 error ( $err, $die=0)
 Throw an error to the user. More...
 
 getArg ( $argId=0, $default=null)
 Get an argument. More...
 
getDB ( $db, $groups=array(), $wiki=false)
 Returns a database to be used by current maintenance script. More...
 
 getDir ()
 Get the maintenance directory. 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 param exists. More...
 
 loadSpecialVars ()
 Handle the special variables that are global to all scripts. More...
 
 maybeHelp ( $force=false)
 Maybe show the help. More...
 
 output ( $out, $channel=null)
 Throw some output to the user. More...
 
 setBatchSize ( $s=0)
 Set the batch size. More...
 
 validateParamsAndArgs ()
 Run some validation checks on the params, etc. More...
 

Additional Inherited Members

- Static Public Member Functions inherited from Maintenance
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 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) More...
 
- Public Attributes inherited from Maintenance
resource $fileHandle
 Used when creating separate schema files. More...
 
 $mDbPass
 
const DB_ADMIN = 2
 
const DB_NONE = 0
 Constants for DB access type. More...
 
const DB_STD = 1
 
const STDIN_ALL = 'all'
 
- Protected Attributes inherited from Maintenance
 $mArgList = array()
 
 $mArgs = array()
 
int $mBatchSize = null
 Batch size. More...
 
 $mDbUser
 
 $mDescription = ''
 
 $mInputLoaded = false
 
 $mOptions = array()
 
 $mParams = array()
 
 $mQuiet = false
 
 $mSelf
 
 $mShortParamsMap = array()
 

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 36 of file purgeChangedPages.php.

Constructor & Destructor Documentation

◆ __construct()

PurgeChangedPages::__construct ( )

Default constructor.

Children should call this first if implementing their own constructors

Reimplemented from Maintenance.

Definition at line 38 of file purgeChangedPages.php.

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

Member Function Documentation

◆ execute()

PurgeChangedPages::execute ( )

◆ pageableSortedRows()

PurgeChangedPages::pageableSortedRows ( ResultWrapper  $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
ResultWrapper$resQuery result sorted by $column (ascending)
string$column
Returns
array (array of rows, string column value)

Definition at line 169 of file purgeChangedPages.php.

References $count, $limit, $res, and array().

Referenced by execute().


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