This is a class for holding configuration settings, particularly for multi-wiki sites. More...

Collaboration diagram for SiteConfiguration:

Public Member Functions
	doReplace ($from, $to, $in)
	Type-safe string replace; won't do replacements on non-strings private?
	extractAllGlobals ($wiki, $suffix=null, $params=array(), $wikiTags=array())
	Retrieves the values of all settings, and places them in their corresponding global variables.
	extractGlobal ($setting, $wiki, $suffix=null, $params=array(), $wikiTags=array())
	Retrieves the value of a given setting, and places it in its corresponding global variable.
	extractGlobalSetting ($setting, $wiki, $params)
	extractVar ($setting, $wiki, $suffix, &$var, $params=array(), $wikiTags=array())
	Retrieves the value of a given setting, and places it in a variable passed by reference.
	get ($settingName, $wiki, $suffix=null, $params=array(), $wikiTags=array())
	Retrieves a configuration setting for a given wiki.
	getAll ($wiki, $suffix=null, $params=array(), $wikiTags=array())
	Gets all settings for a wiki.
	getBool ($setting, $wiki, $suffix=null, $wikiTags=array())
	Retrieves a configuration setting for a given wiki, forced to a boolean.
	getConfig ($wiki, $settings)
	Get the resolved (post-setup) configuration of a potentially foreign wiki.
&	getLocalDatabases ()
	Retrieves an array of local databases.
	isLocalVHost ($vhost)
	Returns true if the given vhost is handled locally.
	loadFullData ()
	siteFromDB ($db)
	Work out the site and language name from a database name.
Static Public Member Functions
static	arrayMerge ($array1)
	Merge multiple arrays together.
Public Attributes
string array	$fullLoadCallback = null
	Optional callback to load full configuration data.
	$fullLoadDone = false
	Whether or not all data has been loaded.
	$localVHosts = array()
	Array of domains that are local and can be handled by the same server.
	$settings = array()
	The whole array of settings.
string array	$siteParamsCallback = null
	A callback function that returns an array with the following keys (all optional):
	$suffixes = array()
	Array of suffixes, for self::siteFromDB()
	$wikis = array()
	Array of wikis, should be the same as $wgLocalDatabases.
Protected Member Functions
	getSetting ($settingName, $wiki, $params)
	Really retrieves a configuration setting for a given wiki.
	getWikiParams ($wiki)
	Return specific settings for $wiki See the documentation of self::$siteParamsCallback for more in-depth documentation about this function.
	mergeParams ($wiki, $suffix, $params, $wikiTags)
	Merge params between the ones passed to the function and the ones given by self::$siteParamsCallback for backward compatibility Values returned by self::getWikiParams() have the priority.
Protected Attributes
array	$cfgCache = array()
	Configuration cache for getConfig()

Detailed Description

This is a class for holding configuration settings, particularly for multi-wiki sites.

A basic synopsis:

Consider a wikifarm having three sites: two production sites, one in English and one in German, and one testing site. You can assign them easy-to-remember identifiers - ISO 639 codes 'en' and 'de' for language wikis, and 'beta' for the testing wiki.

You would thus initialize the site configuration by specifying the wiki identifiers:

 $conf = new SiteConfiguration;
 $conf->wikis = array( 'de', 'en', 'beta' );

When configuring the MediaWiki global settings (the $wg variables), the identifiers will be available to specify settings on a per wiki basis.

 $conf->settings = array(
    'wgSomeSetting' => array(

        # production:
        'de'     => false,
        'en'     => false,

        # test:
        'beta    => true,
    ),
 );

With three wikis, that is easy to manage. But what about a farm with hundreds of wikis? Site configuration provides a special keyword named 'default' which is the value used when a wiki is not found. Hence the above code could be written:

 $conf->settings = array(
    'wgSomeSetting' => array(

        'default' => false,

        # Enable feature on test
        'beta'    => true,
    ),
 );

Since settings can contain arrays, site configuration provides a way to merge an array with the default. This is very useful to avoid repeating settings again and again while still maintaining specific changes on a per wiki basis.

 $conf->settings = array(
    'wgMergeSetting' = array(
        # Value that will be shared among all wikis:
        'default' => array( NS_USER => true ),

        # Leading '+' means merging the array of value with the defaults
        '+beta' => array( NS_HELP => true ),
    ),
 );

 # Get configuration for the German site:
 $conf->get( 'wgMergeSetting', 'de' );
 // --> array( NS_USER => true );

 # Get configuration for the testing site:
 $conf->get( 'wgMergeSetting', 'beta' );
 // --> array( NS_USER => true, NS_HELP => true );

Finally, to load all configuration settings, extract them in global context:

 # Name / identifier of the wiki as set in $conf->wikis
 $wikiID = 'beta';
 $globals = $conf->getAll( $wikiID );
 extract( $globals );

TODO: give examples for, suffixes: $conf->suffixes = array( 'wiki' ); localVHosts callbacks!

Definition at line 117 of file SiteConfiguration.php.

Member Function Documentation

static SiteConfiguration::arrayMerge ( $ array1 ) [static]

Merge multiple arrays together.

On encountering duplicate keys, merge the two, but ONLY if they're arrays. PHP's array_merge_recursive() merges ANY duplicate values into arrays, which is not fun

Parameters:

$array1 array

Returns:: array

Definition at line 572 of file SiteConfiguration.php.

SiteConfiguration::doReplace	(	$	from,
		$	to,
		$	in
	)

Type-safe string replace; won't do replacements on non-strings private?

Parameters:

$from
$to
$in

Returns:: string

Definition at line 265 of file SiteConfiguration.php.

SiteConfiguration::extractAllGlobals	(	$	wiki,
		$	suffix = `null`,
		$	params = `array()`,
		$	wikiTags = `array()`
	)

Retrieves the values of all settings, and places them in their corresponding global variables.

Parameters:

string	$wiki	Wiki ID of the wiki in question.
string	$suffix	The suffix of the wiki in question.
array	$params	List of parameters. $.'key' is replaced by $value in all returned data.
array	$wikiTags	The tags assigned to the wiki.

Definition at line 386 of file SiteConfiguration.php.

SiteConfiguration::extractGlobal	(	$	setting,
		$	wiki,
		$	suffix = `null`,
		$	params = `array()`,
		$	wikiTags = `array()`
	)

Retrieves the value of a given setting, and places it in its corresponding global variable.

Parameters:

string	$setting	ID of the setting name to retrieve
string	$wiki	Wiki ID of the wiki in question.
string	$suffix	The suffix of the wiki in question.
array	$params	List of parameters. $.'key' is replaced by $value in all returned data.
array	$wikiTags	The tags assigned to the wiki.

Definition at line 353 of file SiteConfiguration.php.

SiteConfiguration::extractGlobalSetting	(	$	setting,
		$	wiki,
		$	params
	)

Parameters:

$setting	string
$wiki	string
$params	array

Definition at line 363 of file SiteConfiguration.php.

SiteConfiguration::extractVar	(	$	setting,
		$	wiki,
		$	suffix,
		&$	var,
		$	params = `array()`,
		$	wikiTags = `array()`
	)

Retrieves the value of a given setting, and places it in a variable passed by reference.

Parameters:

string	$setting	ID of the setting name to retrieve
string	$wiki	Wiki ID of the wiki in question.
string	$suffix	The suffix of the wiki in question.
array	$var	Reference The variable to insert the value into.
array	$params	List of parameters. $.'key' is replaced by $value in all returned data.
array	$wikiTags	The tags assigned to the wiki.

Definition at line 338 of file SiteConfiguration.php.

SiteConfiguration::get	(	$	settingName,
		$	wiki,
		$	suffix = `null`,
		$	params = `array()`,
		$	wikiTags = `array()`
	)

Retrieves a configuration setting for a given wiki.

Parameters:

string	$settingName	ID of the setting name to retrieve
string	$wiki	Wiki ID of the wiki in question.
string	$suffix	The suffix of the wiki in question.
array	$params	List of parameters. $.'key' is replaced by $value in all returned data.
array	$wikiTags	The tags assigned to the wiki.

Returns:: Mixed the value of the setting requested.

Definition at line 176 of file SiteConfiguration.php.

SiteConfiguration::getAll	(	$	wiki,
		$	suffix = `null`,
		$	params = `array()`,
		$	wikiTags = `array()`
	)

Gets all settings for a wiki.

Parameters:

string	$wiki	Wiki ID of the wiki in question.
string	$suffix	The suffix of the wiki in question.
array	$params	List of parameters. $.'key' is replaced by $value in all returned data.
array	$wikiTags	The tags assigned to the wiki.

Returns:: Array Array of settings requested.

Definition at line 286 of file SiteConfiguration.php.

SiteConfiguration::getBool	(	$	setting,
		$	wiki,
		$	suffix = `null`,
		$	wikiTags = `array()`
	)

Retrieves a configuration setting for a given wiki, forced to a boolean.

Parameters:

string	$setting	ID of the setting name to retrieve
string	$wiki	Wiki ID of the wiki in question.
string	$suffix	The suffix of the wiki in question.
array	$wikiTags	The tags assigned to the wiki.

Returns:: bool The value of the setting requested.

Definition at line 316 of file SiteConfiguration.php.

SiteConfiguration::getConfig	(	$	wiki,
		$	settings
	)

Get the resolved (post-setup) configuration of a potentially foreign wiki.

For foreign wikis, this is expensive, and only works if maintenance scripts are setup to handle the --wiki parameter such as in wiki farms.

Parameters:

string	$wiki
array \| string	$settings	A setting name or array of setting names

Returns:: Array|mixed Array if $settings is an array, otherwise the value

Exceptions:

MWException

Since:: 1.21

Definition at line 503 of file SiteConfiguration.php.

& SiteConfiguration::getLocalDatabases ( )

Retrieves an array of local databases.

Returns:: array

Definition at line 325 of file SiteConfiguration.php.

SiteConfiguration::getSetting	(	$	settingName,
		$	wiki,
		$	params
	)		`[protected]`

Really retrieves a configuration setting for a given wiki.

Parameters:

string	$settingName	ID of the setting name to retrieve.
string	$wiki	Wiki ID of the wiki in question.
array	$params	array of parameters.

Returns:: Mixed the value of the setting requested.

Definition at line 189 of file SiteConfiguration.php.

SiteConfiguration::getWikiParams ( $ wiki ) [protected]

Return specific settings for $wiki See the documentation of self::$siteParamsCallback for more in-depth documentation about this function.

Parameters:

$wiki String

Returns:: array

Definition at line 401 of file SiteConfiguration.php.

SiteConfiguration::isLocalVHost ( $ vhost )

Returns true if the given vhost is handled locally.

Parameters:

$vhost String

Returns:: bool

Definition at line 558 of file SiteConfiguration.php.

SiteConfiguration::loadFullData ( )

Definition at line 590 of file SiteConfiguration.php.

SiteConfiguration::mergeParams	(	$	wiki,
		$	suffix,
		$	params,
		$	wikiTags
	)		`[protected]`

Merge params between the ones passed to the function and the ones given by self::$siteParamsCallback for backward compatibility Values returned by self::getWikiParams() have the priority.

Parameters:

string	$wiki	Wiki ID of the wiki in question.
string	$suffix	The suffix of the wiki in question.
array	$params	List of parameters. $.'key' is replaced by $value in all returned data.
array	$wikiTags	The tags assigned to the wiki.

Returns:: array

Definition at line 440 of file SiteConfiguration.php.

SiteConfiguration::siteFromDB ( $ db )

Work out the site and language name from a database name.

Parameters:

$db

Returns:: array

Definition at line 468 of file SiteConfiguration.php.

Member Data Documentation

array SiteConfiguration::$cfgCache = array() [protected]

Configuration cache for getConfig()

Definition at line 165 of file SiteConfiguration.php.

string array SiteConfiguration::$fullLoadCallback = null

Optional callback to load full configuration data.

Definition at line 142 of file SiteConfiguration.php.

SiteConfiguration::$fullLoadDone = false

Whether or not all data has been loaded.

Definition at line 145 of file SiteConfiguration.php.

SiteConfiguration::$localVHosts = array()

Array of domains that are local and can be handled by the same server.

Definition at line 137 of file SiteConfiguration.php.

SiteConfiguration::$settings = array()

The whole array of settings.

Definition at line 132 of file SiteConfiguration.php.

string array SiteConfiguration::$siteParamsCallback = null

A callback function that returns an array with the following keys (all optional):

suffix: site's suffix
lang: site's lang
tags: array of wiki tags
params: array of parameters to be replaced The function will receive the SiteConfiguration instance in the first argument and the wiki in the second one. if suffix and lang are passed they will be used for the return value of self::siteFromDB() and self::$suffixes will be ignored

Definition at line 160 of file SiteConfiguration.php.

SiteConfiguration::$suffixes = array()

Array of suffixes, for self::siteFromDB()

Definition at line 122 of file SiteConfiguration.php.

SiteConfiguration::$wikis = array()

Array of wikis, should be the same as $wgLocalDatabases.

Definition at line 127 of file SiteConfiguration.php.

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

includes/SiteConfiguration.php

Public Member Functions

Static Public Member Functions

Public Attributes

Protected Member Functions

Protected Attributes

Detailed Description

Member Function Documentation

Member Data Documentation