* @since 1.21
*/
class ExternalStoreMwstore extends ExternalStoreMedium {
+ /** @var FileBackendGroup */
+ private $fbGroup;
+
+ /**
+ * @see ExternalStoreMedium::__construct()
+ * @param array $params Additional parameters include:
+ * - fbGroup: a FileBackendGroup instance
+ */
+ public function __construct( array $params ) {
+ parent::__construct( $params );
+ if ( !isset( $params['fbGroup'] ) || !( $params['fbGroup'] instanceof FileBackendGroup ) ) {
+ throw new InvalidArgumentException( "FileBackendGroup required in 'fbGroup' field." );
+ }
+ $this->fbGroup = $params['fbGroup'];
+ }
+
/**
* The URL returned is of the form of the form mwstore://backend/container/wiki/id
*
* @return bool
*/
public function fetchFromURL( $url ) {
- $be = FileBackendGroup::singleton()->backendFromPath( $url );
+ $be = $this->fbGroup->backendFromPath( $url );
if ( $be instanceof FileBackend ) {
// We don't need "latest" since objects are immutable and
// backends should at least have "read-after-create" consistency.
public function batchFetchFromURLs( array $urls ) {
$pathsByBackend = [];
foreach ( $urls as $url ) {
- $be = FileBackendGroup::singleton()->backendFromPath( $url );
+ $be = $this->fbGroup->backendFromPath( $url );
if ( $be instanceof FileBackend ) {
$pathsByBackend[$be->getName()][] = $url;
}
}
$blobs = [];
foreach ( $pathsByBackend as $backendName => $paths ) {
- $be = FileBackendGroup::singleton()->get( $backendName );
+ $be = $this->fbGroup->get( $backendName );
$blobs += $be->getFileContentsMulti( [ 'srcs' => $paths ] );
}
return $blobs;
}
+ /**
+ * @inheritDoc
+ */
public function store( $backend, $data ) {
- $be = FileBackendGroup::singleton()->get( $backend );
- if ( $be instanceof FileBackend ) {
- // Get three random base 36 characters to act as shard directories
- $rand = Wikimedia\base_convert( mt_rand( 0, 46655 ), 10, 36, 3 );
- // Make sure ID is roughly lexicographically increasing for performance
- $id = str_pad( UIDGenerator::newTimestampedUID128( 32 ), 26, '0', STR_PAD_LEFT );
- // Segregate items by wiki ID for the sake of bookkeeping
- // @FIXME: this does not include the domain for b/c but it ideally should
- $wiki = $this->params['wiki'] ?? wfWikiID();
+ $be = $this->fbGroup->get( $backend );
+ // Get three random base 36 characters to act as shard directories
+ $rand = Wikimedia\base_convert( mt_rand( 0, 46655 ), 10, 36, 3 );
+ // Make sure ID is roughly lexicographically increasing for performance
+ $id = str_pad( UIDGenerator::newTimestampedUID128( 32 ), 26, '0', STR_PAD_LEFT );
+ // Segregate items by DB domain ID for the sake of bookkeeping
+ $domain = $this->isDbDomainExplicit
+ ? $this->dbDomain
+ // @FIXME: this does not include the schema for b/c but it ideally should
+ : WikiMap::getWikiIdFromDbDomain( $this->dbDomain );
+ $url = $be->getContainerStoragePath( 'data' ) . '/' . rawurlencode( $domain );
+ // Use directory/container sharding
+ $url .= ( $be instanceof FSFileBackend )
+ ? "/{$rand[0]}/{$rand[1]}/{$rand[2]}/{$id}" // keep directories small
+ : "/{$rand[0]}/{$rand[1]}/{$id}"; // container sharding is only 2-levels
- $url = $be->getContainerStoragePath( 'data' ) . '/' . rawurlencode( $wiki );
- $url .= ( $be instanceof FSFileBackend )
- ? "/{$rand[0]}/{$rand[1]}/{$rand[2]}/{$id}" // keep directories small
- : "/{$rand[0]}/{$rand[1]}/{$id}"; // container sharding is only 2-levels
+ $be->prepare( [ 'dir' => dirname( $url ), 'noAccess' => 1, 'noListing' => 1 ] );
+ $status = $be->create( [ 'dst' => $url, 'content' => $data ] );
- $be->prepare( [ 'dir' => dirname( $url ), 'noAccess' => 1, 'noListing' => 1 ] );
- if ( $be->create( [ 'dst' => $url, 'content' => $data ] )->isOK() ) {
- return $url;
- }
+ if ( $status->isOK() ) {
+ return $url;
}
- return false;
+ throw new MWException( __METHOD__ . ": operation failed: $status" );
}
public function isReadOnly( $backend ) {
- $be = FileBackendGroup::singleton()->get( $backend );
+ if ( parent::isReadOnly( $backend ) ) {
+ return true;
+ }
+
+ $be = $this->fbGroup->get( $backend );
return $be ? $be->isReadOnly() : false;
}