wikimedia / mediawiki

			$params['channels'][$action] = $channel;

		}

		$params['cache'] = self::newFromParams( $params['store'] );

		if ( isset( $params['loggroup'] ) ) {

			$params['logger'] = LoggerFactory::getInstance( $params['loggroup'] );

		} else {

			$params['logger'] = LoggerFactory::getInstance( 'objectcache' );

		}

		$class = $params['class'];

		return new $class( $params );

	 * @throws InvalidArgumentException

	 */

	public static function newFromParams( $params ) {

		if ( isset( $params['loggroup'] ) ) {

			$params['logger'] = LoggerFactory::getInstance( $params['loggroup'] );

		} else {

			$params['logger'] = LoggerFactory::getInstance( 'objectcache' );

		}

		if ( !isset( $params['keyspace'] ) ) {

			$params['keyspace'] = self::getDefaultKeyspace();

		}