LocalSerialProvider.php
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LocalSerialProvider.php
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	<?php

	namespace MediaWiki\User\TempUser;

	use Wikimedia\Rdbms\ILoadBalancer;

	/**
	* A serial provider which allocates IDs from the local database, or from a
	* shared database if $wgSharedDB is used. It is "local" in the sense that it
	* uses the same DB connection as the local wiki.
	*
	* @since 1.39
	*/
	class LocalSerialProvider extends DBSerialProvider {
	private ILoadBalancer $lb;

	/**
	* @param array $config
	* - numShards (int, default 1): A small integer. This can be set to a
	* value greater than 1 to avoid acquiring a global lock when
	* allocating IDs, at the expense of making the IDs be non-monotonic.
	* @param ILoadBalancer $lb
	*/
	public function __construct( $config, ILoadBalancer $lb ) {
	parent::__construct( $config );
	$this->lb = $lb;
	}

	protected function getDB() {
	return $this->lb->getConnection(
	DB_PRIMARY,
	[],
	false,
	// So that startAtomic() will start a commit, reducing lock time.
	// Without this flag, the transaction will be open until the start
	// of request shutdown. This could be omitted to reduce the
	// connection overhead, with numShards tuned upwards to compensate.
	ILoadBalancer::CONN_TRX_AUTOCOMMIT
	);
	}

	protected function getTableName() {
	return 'user_autocreate_serial';
	}
	}