X-Git-Url: https://git.heureux-cyclage.org/?a=blobdiff_plain;f=includes%2Finterwiki%2FInterwiki.php;h=558e32c11ecf8c77cb608826776d81738063751d;hb=925f65c1400a3f5ec22ea9edc3c07f1d06fa368d;hp=5a0dd36fa8009769c922a291e86de1ca499ea143;hpb=20b4f9d311ba743b88e277907293e5f8f2bb6ee1;p=lhc%2Fweb%2Fwiklou.git

diff --git a/includes/interwiki/Interwiki.php b/includes/interwiki/Interwiki.php
index 5a0dd36fa8..558e32c11e 100644
--- a/includes/interwiki/Interwiki.php
+++ b/includes/interwiki/Interwiki.php
@@ -19,19 +19,12 @@
  *
  * @file
  */
-use \Cdb\Exception as CdbException;
-use \Cdb\Reader as CdbReader;
+use MediaWiki\MediaWikiServices;
 
 /**
- * The interwiki class
- * All information is loaded on creation when called by Interwiki::fetch( $prefix ).
- * All work is done on slave, because this should *never* change (except during
- * schema updates etc, which aren't wiki-related)
+ * Value object for representing interwiki records.
  */
 class Interwiki {
-	// Cache - removes oldest entry when it hits limit
-	protected static $smCache = [];
-	const CACHE_LIMIT = 100; // 0 means unlimited, any other value is max number of entries.
 
 	/** @var string The interwiki prefix, (e.g. "Meatball", or the language prefix "de") */
 	protected $mPrefix;
@@ -67,335 +60,48 @@ class Interwiki {
 	/**
 	 * Check whether an interwiki prefix exists
 	 *
+	 * @deprecated since 1.28, use InterwikiLookup instead
+	 *
 	 * @param string $prefix Interwiki prefix to use
 	 * @return bool Whether it exists
 	 */
 	public static function isValidInterwiki( $prefix ) {
-		$result = self::fetch( $prefix );
-
-		return (bool)$result;
+		return MediaWikiServices::getInstance()->getInterwikiLookup()->isValidInterwiki( $prefix );
 	}
 
 	/**
 	 * Fetch an Interwiki object
 	 *
+	 * @deprecated since 1.28, use InterwikiLookup instead
+	 *
 	 * @param string $prefix Interwiki prefix to use
 	 * @return Interwiki|null|bool
 	 */
 	public static function fetch( $prefix ) {
-		global $wgContLang;
-
-		if ( $prefix == '' ) {
-			return null;
-		}
-
-		$prefix = $wgContLang->lc( $prefix );
-		if ( isset( self::$smCache[$prefix] ) ) {
-			return self::$smCache[$prefix];
-		}
-
-		global $wgInterwikiCache;
-		if ( $wgInterwikiCache ) {
-			$iw = Interwiki::getInterwikiCached( $prefix );
-		} else {
-			$iw = Interwiki::load( $prefix );
-			if ( !$iw ) {
-				$iw = false;
-			}
-		}
-
-		if ( self::CACHE_LIMIT && count( self::$smCache ) >= self::CACHE_LIMIT ) {
-			reset( self::$smCache );
-			unset( self::$smCache[key( self::$smCache )] );
-		}
-
-		self::$smCache[$prefix] = $iw;
-
-		return $iw;
-	}
-
-	/**
-	 * Resets locally cached Interwiki objects. This is intended for use during testing only.
-	 * This does not invalidate entries in the persistent cache, as invalidateCache() does.
-	 * @since 1.27
-	 */
-	public static function resetLocalCache() {
-		static::$smCache = [];
+		return MediaWikiServices::getInstance()->getInterwikiLookup()->fetch( $prefix );
 	}
 
 	/**
 	 * Purge the cache (local and persistent) for an interwiki prefix.
+	 *
 	 * @param string $prefix
 	 * @since 1.26
 	 */
 	public static function invalidateCache( $prefix ) {
-		$cache = ObjectCache::getMainWANInstance();
-		$key = wfMemcKey( 'interwiki', $prefix );
-		$cache->delete( $key );
-		unset( static::$smCache[$prefix] );
-	}
-
-	/**
-	 * Fetch interwiki prefix data from local cache in constant database.
-	 *
-	 * @note More logic is explained in DefaultSettings.
-	 *
-	 * @param string $prefix Interwiki prefix
-	 * @return Interwiki
-	 */
-	protected static function getInterwikiCached( $prefix ) {
-		$value = self::getInterwikiCacheEntry( $prefix );
-
-		$s = new Interwiki( $prefix );
-		if ( $value ) {
-			// Split values
-			list( $local, $url ) = explode( ' ', $value, 2 );
-			$s->mURL = $url;
-			$s->mLocal = (bool)$local;
-		} else {
-			$s = false;
-		}
-
-		return $s;
-	}
-
-	/**
-	 * Get entry from interwiki cache
-	 *
-	 * @note More logic is explained in DefaultSettings.
-	 *
-	 * @param string $prefix Database key
-	 * @return bool|string The interwiki entry or false if not found
-	 */
-	protected static function getInterwikiCacheEntry( $prefix ) {
-		global $wgInterwikiScopes, $wgInterwikiFallbackSite;
-		static $site;
-
-		$value = false;
-		try {
-			// Resolve site name
-			if ( $wgInterwikiScopes >= 3 && !$site ) {
-				$site = self::getCacheValue( '__sites:' . wfWikiID() );
-				if ( $site == '' ) {
-					$site = $wgInterwikiFallbackSite;
-				}
-			}
-
-			$value = self::getCacheValue( wfMemcKey( $prefix ) );
-			// Site level
-			if ( $value == '' && $wgInterwikiScopes >= 3 ) {
-				$value = self::getCacheValue( "_{$site}:{$prefix}" );
-			}
-			// Global Level
-			if ( $value == '' && $wgInterwikiScopes >= 2 ) {
-				$value = self::getCacheValue( "__global:{$prefix}" );
-			}
-			if ( $value == 'undef' ) {
-				$value = '';
-			}
-		} catch ( CdbException $e ) {
-			wfDebug( __METHOD__ . ": CdbException caught, error message was "
-				. $e->getMessage() );
-		}
-
-		return $value;
-	}
-
-	private static function getCacheValue( $key ) {
-		global $wgInterwikiCache;
-		static $reader;
-		if ( $reader === null ) {
-			$reader = is_array( $wgInterwikiCache ) ? false : CdbReader::open( $wgInterwikiCache );
-		}
-		if ( $reader ) {
-			return $reader->get( $key );
-		} else {
-			return isset( $wgInterwikiCache[$key] ) ? $wgInterwikiCache[$key] : false;
-		}
-	}
-
-	/**
-	 * Load the interwiki, trying first memcached then the DB
-	 *
-	 * @param string $prefix The interwiki prefix
-	 * @return Interwiki|bool Interwiki if $prefix is valid, otherwise false
-	 */
-	protected static function load( $prefix ) {
-		global $wgInterwikiExpiry;
-
-		$iwData = [];
-		if ( !Hooks::run( 'InterwikiLoadPrefix', [ $prefix, &$iwData ] ) ) {
-			return Interwiki::loadFromArray( $iwData );
-		}
-
-		if ( is_array( $iwData ) ) {
-			$iw = Interwiki::loadFromArray( $iwData );
-			if ( $iw ) {
-				return $iw; // handled by hook
-			}
-		}
-
-		$iwData = ObjectCache::getMainWANInstance()->getWithSetCallback(
-			wfMemcKey( 'interwiki', $prefix ),
-			$wgInterwikiExpiry,
-			function ( $oldValue, &$ttl, array &$setOpts ) use ( $prefix ) {
-				$dbr = wfGetDB( DB_SLAVE );
-
-				$setOpts += Database::getCacheSetOptions( $dbr );
-
-				$row = $dbr->selectRow(
-					'interwiki',
-					Interwiki::selectFields(),
-					[ 'iw_prefix' => $prefix ],
-					__METHOD__
-				);
-
-				return $row ? (array)$row : '!NONEXISTENT';
-			}
-		);
-
-		if ( is_array( $iwData ) ) {
-			return Interwiki::loadFromArray( $iwData ) ?: false;
-		}
-
-		return false;
-	}
-
-	/**
-	 * Fill in member variables from an array (e.g. memcached result, Database::fetchRow, etc)
-	 *
-	 * @param array $mc Associative array: row from the interwiki table
-	 * @return Interwiki|bool Interwiki object or false if $mc['iw_url'] is not set
-	 */
-	protected static function loadFromArray( $mc ) {
-		if ( isset( $mc['iw_url'] ) ) {
-			$iw = new Interwiki();
-			$iw->mURL = $mc['iw_url'];
-			$iw->mLocal = isset( $mc['iw_local'] ) ? (bool)$mc['iw_local'] : false;
-			$iw->mTrans = isset( $mc['iw_trans'] ) ? (bool)$mc['iw_trans'] : false;
-			$iw->mAPI = isset( $mc['iw_api'] ) ? $mc['iw_api'] : '';
-			$iw->mWikiID = isset( $mc['iw_wikiid'] ) ? $mc['iw_wikiid'] : '';
-
-			return $iw;
-		}
-
-		return false;
-	}
-
-	/**
-	 * Fetch all interwiki prefixes from interwiki cache
-	 *
-	 * @param null|string $local If not null, limits output to local/non-local interwikis
-	 * @return array List of prefixes
-	 * @since 1.19
-	 */
-	protected static function getAllPrefixesCached( $local ) {
-		global $wgInterwikiScopes, $wgInterwikiFallbackSite;
-		static $site;
-
-		wfDebug( __METHOD__ . "()\n" );
-		$data = [];
-		try {
-			/* Resolve site name */
-			if ( $wgInterwikiScopes >= 3 && !$site ) {
-				$site = self::getCacheValue( '__sites:' . wfWikiID() );
-
-				if ( $site == '' ) {
-					$site = $wgInterwikiFallbackSite;
-				}
-			}
-
-			// List of interwiki sources
-			$sources = [];
-			// Global Level
-			if ( $wgInterwikiScopes >= 2 ) {
-				$sources[] = '__global';
-			}
-			// Site level
-			if ( $wgInterwikiScopes >= 3 ) {
-				$sources[] = '_' . $site;
-			}
-			$sources[] = wfWikiID();
-
-			foreach ( $sources as $source ) {
-				$list = self::getCacheValue( '__list:' . $source );
-				foreach ( explode( ' ', $list ) as $iw_prefix ) {
-					$row = self::getCacheValue( "{$source}:{$iw_prefix}" );
-					if ( !$row ) {
-						continue;
-					}
-
-					list( $iw_local, $iw_url ) = explode( ' ', $row );
-
-					if ( $local !== null && $local != $iw_local ) {
-						continue;
-					}
-
-					$data[$iw_prefix] = [
-						'iw_prefix' => $iw_prefix,
-						'iw_url' => $iw_url,
-						'iw_local' => $iw_local,
-					];
-				}
-			}
-		} catch ( CdbException $e ) {
-			wfDebug( __METHOD__ . ": CdbException caught, error message was "
-				. $e->getMessage() );
-		}
-
-		ksort( $data );
-
-		return array_values( $data );
-	}
-
-	/**
-	 * Fetch all interwiki prefixes from DB
-	 *
-	 * @param string|null $local If not null, limits output to local/non-local interwikis
-	 * @return array List of prefixes
-	 * @since 1.19
-	 */
-	protected static function getAllPrefixesDB( $local ) {
-		$db = wfGetDB( DB_SLAVE );
-
-		$where = [];
-
-		if ( $local !== null ) {
-			if ( $local == 1 ) {
-				$where['iw_local'] = 1;
-			} elseif ( $local == 0 ) {
-				$where['iw_local'] = 0;
-			}
-		}
-
-		$res = $db->select( 'interwiki',
-			self::selectFields(),
-			$where, __METHOD__, [ 'ORDER BY' => 'iw_prefix' ]
-		);
-
-		$retval = [];
-		foreach ( $res as $row ) {
-			$retval[] = (array)$row;
-		}
-
-		return $retval;
+		return MediaWikiServices::getInstance()->getInterwikiLookup()->invalidateCache( $prefix );
 	}
 
 	/**
 	 * Returns all interwiki prefixes
 	 *
+	 * @deprecated since 1.28, unused. Use InterwikiLookup instead.
+	 *
 	 * @param string|null $local If set, limits output to local/non-local interwikis
 	 * @return array List of prefixes
 	 * @since 1.19
 	 */
 	public static function getAllPrefixes( $local = null ) {
-		global $wgInterwikiCache;
-
-		if ( $wgInterwikiCache ) {
-			return self::getAllPrefixesCached( $local );
-		}
-
-		return self::getAllPrefixesDB( $local );
+		return MediaWikiServices::getInstance()->getInterwikiLookup()->getAllPrefixes( $local );
 	}
 
 	/**
@@ -476,19 +182,4 @@ class Interwiki {
 		return !$msg->exists() ? '' : $msg->text();
 	}
 
-	/**
-	 * Return the list of interwiki fields that should be selected to create
-	 * a new Interwiki object.
-	 * @return string[]
-	 */
-	public static function selectFields() {
-		return [
-			'iw_prefix',
-			'iw_url',
-			'iw_api',
-			'iw_wikiid',
-			'iw_local',
-			'iw_trans'
-		];
-	}
 }