6cba5762b7
* Don't connect to the commons DB on cache hits, in order to determine the cache key name. Removed remnants of that bright idea from GlobalFunctions.php. * Fixed total failure of negative caching in checkRedirect() due to memcached stripping trailing spaces from string values. Probably never worked. Also: * Respect hasSharedCache in foreign repos. Recently-added code was apparently ignorant of this setting. * Renamed getMemcKey() to getSharedCacheKey() to make its function more clear, introduced getLocalCacheKey() to do the other thing. Fixed its parameters to be like wfMemcKey() and used it in more places. * Used getLocalCacheKey() in various places instead of wfMemc(), to avoid having multiple repositories overwrite each others' caches. * Fixed the BagOStuff bug that the FIXME in LocalRepo::checkRedirect() appears to refer to. * Removed getMasterDB() and getSlaveDB() from FileRepo, it's incorrect to assume that a repo other than a LocalRepo has an associated database. * Made FileRepo::invalidateImageRedirect() a stub, to match FileRepo::checkRedirect(). Moved the functionality to LocalRepo where checkRedirect() is concretely implemented.
54 lines
1.6 KiB
PHP
54 lines
1.6 KiB
PHP
<?php
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/**
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* A foreign repository with a MediaWiki database accessible via the configured LBFactory
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* @ingroup FileRepo
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*/
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class ForeignDBViaLBRepo extends LocalRepo {
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var $wiki, $dbName, $tablePrefix;
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var $fileFactory = array( 'ForeignDBFile', 'newFromTitle' );
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var $fileFromRowFactory = array( 'ForeignDBFile', 'newFromRow' );
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function __construct( $info ) {
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parent::__construct( $info );
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$this->wiki = $info['wiki'];
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list( $this->dbName, $this->tablePrefix ) = wfSplitWikiID( $this->wiki );
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$this->hasSharedCache = $info['hasSharedCache'];
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}
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function getMasterDB() {
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return wfGetDB( DB_MASTER, array(), $this->wiki );
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}
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function getSlaveDB() {
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return wfGetDB( DB_SLAVE, array(), $this->wiki );
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}
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function hasSharedCache() {
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return $this->hasSharedCache;
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}
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/**
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* Get a key on the primary cache for this repository.
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* Returns false if the repository's cache is not accessible at this site.
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* The parameters are the parts of the key, as for wfMemcKey().
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*/
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function getSharedCacheKey( /*...*/ ) {
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if ( $this->hasSharedCache() ) {
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$args = func_get_args();
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array_unshift( $args, $this->wiki );
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return implode( ':', $args );
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} else {
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return false;
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}
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}
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function store( $srcPath, $dstZone, $dstRel, $flags = 0 ) {
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throw new MWException( get_class($this) . ': write operations are not supported' );
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}
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function publish( $srcPath, $dstRel, $archiveRel, $flags = 0 ) {
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throw new MWException( get_class($this) . ': write operations are not supported' );
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}
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function deleteBatch( $fileMap ) {
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throw new MWException( get_class($this) . ': write operations are not supported' );
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}
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}
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