Backport WikiMap/JobQueueGroup logic to handle hyphenated DB names

[lhc/web/wiklou.git] / includes / WikiMap.php

diff --git a/includes/WikiMap.php b/includes/WikiMap.php
index a03bc19..9cc308d 100644 (file)
--- a/includes/WikiMap.php
+++ b/includes/WikiMap.php
@@ -20,8 +20,11 @@
  * @file
  */
 
+use MediaWiki\MediaWikiServices;
+use Wikimedia\Rdbms\DatabaseDomain;
+
 /**
- * Helper tools for dealing with other wikis.
+ * Helper tools for dealing with other locally-hosted wikis.
  */
 class WikiMap {
 
@@ -81,7 +84,7 @@ class WikiMap {
         * @return WikiReference|null WikiReference object or null if the wiki was not found
         */
        private static function getWikiWikiReferenceFromSites( $wikiID ) {
-               $siteLookup = \MediaWiki\MediaWikiServices::getInstance()->getSiteLookup();
+               $siteLookup = MediaWikiServices::getInstance()->getSiteLookup();
                $site = $siteLookup->getSite( $wikiID );
 
                if ( !$site instanceof MediaWikiSite ) {
@@ -115,7 +118,7 @@ class WikiMap {
         * @return string|int Wiki's name or $wiki_id if the wiki was not found
         */
        public static function getWikiName( $wikiID ) {
-               $wiki = WikiMap::getWiki( $wikiID );
+               $wiki = self::getWiki( $wikiID );
 
                if ( $wiki ) {
                        return $wiki->getDisplayName();
@@ -166,7 +169,7 @@ class WikiMap {
         * @return string|bool URL or false if the wiki was not found
         */
        public static function getForeignURL( $wikiID, $page, $fragmentId = null ) {
-               $wiki = WikiMap::getWiki( $wikiID );
+               $wiki = self::getWiki( $wikiID );
 
                if ( $wiki ) {
                        return $wiki->getFullUrl( $page, $fragmentId );
@@ -174,4 +177,118 @@ class WikiMap {
 
                return false;
        }
+
+       /**
+        * Get canonical server info for all local wikis in the map that have one
+        *
+        * @return array Map of (local wiki ID => map of (url,parts))
+        * @since 1.30
+        */
+       public static function getCanonicalServerInfoForAllWikis() {
+               $cache = MediaWikiServices::getInstance()->getLocalServerObjectCache();
+
+               return $cache->getWithSetCallback(
+                       $cache->makeGlobalKey( 'wikimap', 'canonical-urls' ),
+                       $cache::TTL_DAY,
+                       function () {
+                               global $wgLocalDatabases, $wgCanonicalServer;
+
+                               $infoMap = [];
+                               // Make sure at least the current wiki is set, for simple configurations.
+                               // This also makes it the first in the map, which is useful for common cases.
+                               $infoMap[wfWikiID()] = [
+                                       'url' => $wgCanonicalServer,
+                                       'parts' => wfParseUrl( $wgCanonicalServer )
+                               ];
+
+                               foreach ( $wgLocalDatabases as $wikiId ) {
+                                       $wikiReference = self::getWiki( $wikiId );
+                                       if ( $wikiReference ) {
+                                               $url = $wikiReference->getCanonicalServer();
+                                               $infoMap[$wikiId] = [ 'url' => $url, 'parts' => wfParseUrl( $url ) ];
+                                       }
+                               }
+
+                               return $infoMap;
+                       }
+               );
+       }
+
+       /**
+        * @param string $url
+        * @return bool|string Wiki ID or false
+        * @since 1.30
+        */
+       public static function getWikiFromUrl( $url ) {
+               $urlPartsCheck = wfParseUrl( $url );
+               if ( $urlPartsCheck === false ) {
+                       return false;
+               }
+
+               $urlPartsCheck = array_intersect_key( $urlPartsCheck, [ 'host' => 1, 'port' => 1 ] );
+               foreach ( self::getCanonicalServerInfoForAllWikis() as $wikiId => $info ) {
+                       $urlParts = $info['parts'];
+                       if ( $urlParts === false ) {
+                               continue; // sanity
+                       }
+
+                       $urlParts = array_intersect_key( $urlParts, [ 'host' => 1, 'port' => 1 ] );
+                       if ( $urlParts == $urlPartsCheck ) {
+                               return $wikiId;
+                       }
+               }
+
+               return false;
+       }
+
+       /**
+        * Get the wiki ID of a database domain
+        *
+        * This is like DatabaseDomain::getId() without encoding (for legacy reasons)
+        *
+        * @param string|DatabaseDomain $domain
+        * @return string
+        */
+       public static function getWikiIdFromDomain( $domain ) {
+               if ( !( $domain instanceof DatabaseDomain ) ) {
+                       $domain = DatabaseDomain::newFromId( $domain );
+               }
+
+               return strlen( $domain->getTablePrefix() )
+                       ? "{$domain->getDatabase()}-{$domain->getTablePrefix()}"
+                       : $domain->getDatabase();
+       }
+
+       /**
+        * @param DatabaseDomain|string $domain
+        * @return bool Whether $domain has the same DB/prefix as the current wiki
+        * @since 1.33
+        */
+       public static function isCurrentWikiDbDomain( $domain ) {
+               $domain = DatabaseDomain::newFromId( $domain );
+               $curDomain = self::getCurrentWikiDbDomain();
+
+               if ( !in_array( $curDomain->getSchema(), [ null, 'mediawiki' ], true ) ) {
+                       // Include the schema if it is set and is not the default placeholder.
+                       // This means a site admin may have specifically taylored the schemas.
+                       // Domain IDs might use the form <DB>-<project>-<language>, meaning that
+                       // the schema portion must be accounted for to disambiguate wikis.
+                       return $curDomain->equals( $domain );
+               }
+
+               return (
+                       $curDomain->getDatabase() === $domain->getDatabase() &&
+                       $curDomain->getTablePrefix() === $domain->getTablePrefix()
+               );
+       }
+
+       /**
+        * @return DatabaseDomain Database domain of the current wiki
+        * @since 1.33
+        */
+       public static function getCurrentWikiDbDomain() {
+               global $wgDBname, $wgDBmwschema, $wgDBprefix;
+               // Avoid invoking LBFactory to avoid any chance of recursion
+               return new DatabaseDomain( $wgDBname, $wgDBmwschema, (string)$wgDBprefix );
+       }
 }