* @ingroup FileRepo
*/
class RepoGroup {
- /**
- * @var LocalRepo
- */
- var $localRepo;
+ /** @var LocalRepo */
+ protected $localRepo;
- var $foreignRepos, $reposInitialised = false;
- var $localInfo, $foreignInfo;
- var $cache;
+ /** @var FileRepo[] */
+ protected $foreignRepos;
- /**
- * @var RepoGroup
- */
+ /** @var bool */
+ protected $reposInitialised = false;
+
+ /** @var array */
+ protected $localInfo;
+
+ /** @var array */
+ protected $foreignInfo;
+
+ /** @var ProcessCacheLRU */
+ protected $cache;
+
+ /** @var RepoGroup */
protected static $instance;
+
+ /** Maximum number of cache items */
const MAX_CACHE_SIZE = 500;
/**
* It's not enough to just create a superclass ... you have
* to get people to call into it even though all they know is RepoGroup::singleton()
*
- * @param $instance RepoGroup
+ * @param RepoGroup $instance
*/
static function setSingleton( $instance ) {
self::$instance = $instance;
*
* @param array $localInfo Associative array for local repo's info
* @param array $foreignInfo of repository info arrays.
- * Each info array is an associative array with the 'class' member
- * giving the class name. The entire array is passed to the repository
- * constructor as the first parameter.
+ * Each info array is an associative array with the 'class' member
+ * giving the class name. The entire array is passed to the repository
+ * constructor as the first parameter.
*/
function __construct( $localInfo, $foreignInfo ) {
$this->localInfo = $localInfo;
$this->foreignInfo = $foreignInfo;
- $this->cache = array();
+ $this->cache = new ProcessCacheLRU( self::MAX_CACHE_SIZE );
}
/**
*
* @param $title Title|string Title object or string
* @param array $options Associative array of options:
- * time: requested time for an archived image, or false for the
- * current version. An image object will be returned which was
- * created at the specified time.
- *
- * ignoreRedirect: If true, do not follow file redirects
- *
- * private: If true, return restricted (deleted) files if the current
- * user is allowed to view them. Otherwise, such files will not
- * be found.
- *
- * bypassCache: If true, do not use the process-local cache of File objects
- * @return File object or false if it is not found
+ * time: requested time for an archived image, or false for the
+ * current version. An image object will be returned which was
+ * created at the specified time.
+ * ignoreRedirect: If true, do not follow file redirects
+ * private: If true, return restricted (deleted) files if the current
+ * user is allowed to view them. Otherwise, such files will not
+ * be found.
+ * bypassCache: If true, do not use the process-local cache of File objects
+ * @return File|bool False if title is not found
*/
function findFile( $title, $options = array() ) {
if ( !is_array( $options ) ) {
) {
$time = isset( $options['time'] ) ? $options['time'] : '';
$dbkey = $title->getDBkey();
- if ( isset( $this->cache[$dbkey][$time] ) ) {
- wfDebug( __METHOD__ . ": got File:$dbkey from process cache\n" );
- # Move it to the end of the list so that we can delete the LRU entry later
- $this->pingCache( $dbkey );
-
- # Return the entry
- return $this->cache[$dbkey][$time];
+ if ( $this->cache->has( $dbkey, $time, 60 ) ) {
+ return $this->cache->get( $dbkey, $time );
}
$useCache = true;
} else {
$image = $image ? $image : false; // type sanity
# Cache file existence or non-existence
if ( $useCache && ( !$image || $image->isCacheable() ) ) {
- $this->trimCache();
- $this->cache[$dbkey][$time] = $image;
+ $this->cache->set( $dbkey, $time, $image );
}
return $image;
}
/**
- * @param $inputItems array
+ * Search repositories for many files at once.
+ *
+ * @param array $items An array of titles, or an array of findFile() options with
+ * the "title" option giving the title. Example:
+ *
+ * $findItem = array( 'title' => $title, 'private' => true );
+ * $findBatch = array( $findItem );
+ * $repo->findFiles( $findBatch );
+ *
+ * No title should appear in $items twice, as the result use titles as keys
+ * @param int $flags Supports:
+ * - FileRepo::NAME_AND_TIME_ONLY : return a (search title => (title,timestamp)) map.
+ * The search title uses the input titles; the other is the final post-redirect title.
+ * All titles are returned as string DB keys and the inner array is associative.
+ * @return array Map of (file name => File objects) for matches
+ *
+ * @param array $inputItems
+ * @param integer $flags
* @return array
*/
- function findFiles( $inputItems ) {
+ function findFiles( array $inputItems, $flags = 0 ) {
if ( !$this->reposInitialised ) {
$this->initialiseRepos();
}
}
}
- $images = $this->localRepo->findFiles( $items );
+ $images = $this->localRepo->findFiles( $items, $flags );
foreach ( $this->foreignRepos as $repo ) {
// Remove found files from $items
unset( $items[$name] );
}
- $images = array_merge( $images, $repo->findFiles( $items ) );
+ $images = array_merge( $images, $repo->findFiles( $items, $flags ) );
}
return $images;
if ( $redir ) {
return $redir;
}
+
foreach ( $this->foreignRepos as $repo ) {
$redir = $repo->checkRedirect( $title );
if ( $redir ) {
* Find all instances of files with this keys
*
* @param array $hashes base 36 SHA-1 hashes
- * @return Array of array of File objects
+ * @return array of array of File objects
*/
function findBySha1s( array $hashes ) {
if ( !$this->reposInitialised ) {
/**
* Get the repo instance with a given key.
- * @param $index string|int
+ * @param string|int $index
* @return bool|LocalRepo
*/
function getRepo( $index ) {
/**
* Get the repo instance by its name
- * @param $name string
+ * @param string $name
* @return bool
*/
function getRepoByName( $name ) {
* Call a function for each foreign repo, with the repo object as the
* first parameter.
*
- * @param $callback Callback: the function to call
- * @param array $params optional additional parameters to pass to the function
+ * @param callable $callback The function to call
+ * @param array $params Optional additional parameters to pass to the function
* @return bool
*/
function forEachForeignRepo( $callback, $params = array() ) {
/**
* Does the installation have any foreign repos set up?
- * @return Boolean
+ * @return bool
*/
function hasForeignRepos() {
return (bool)$this->foreignRepos;
/**
* Split a virtual URL into repo, zone and rel parts
- * @param $url string
+ * @param string $url
* @throws MWException
* @return array containing repo, zone and rel
*/
}
/**
- * @param $fileName string
+ * @param string $fileName
* @return array
*/
function getFileProps( $fileName ) {
}
}
- /**
- * Move a cache entry to the top (such as when accessed)
- */
- protected function pingCache( $key ) {
- if ( isset( $this->cache[$key] ) ) {
- $tmp = $this->cache[$key];
- unset( $this->cache[$key] );
- $this->cache[$key] = $tmp;
- }
- }
-
- /**
- * Limit cache memory
- */
- protected function trimCache() {
- while ( count( $this->cache ) >= self::MAX_CACHE_SIZE ) {
- reset( $this->cache );
- $key = key( $this->cache );
- wfDebug( __METHOD__ . ": evicting $key\n" );
- unset( $this->cache[$key] );
- }
- }
-
/**
* Clear RepoGroup process cache used for finding a file
- * @param $title Title|null Title of the file or null to clear all files
+ * @param Title|null $title Title of the file or null to clear all files
*/
public function clearCache( Title $title = null ) {
if ( $title == null ) {
- $this->cache = array();
+ $this->cache->clear();
} else {
- $dbKey = $title->getDBkey();
- if ( isset( $this->cache[$dbKey] ) ) {
- unset( $this->cache[$dbKey] );
- }
+ $this->cache->clear( $title->getDBkey() );
}
}
}
dépôts / lhc / web / wiklou.git / blobdiff