45 lines
1.3 KiB
PHP
45 lines
1.3 KiB
PHP
<?php
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namespace MediaWiki\User\TempUser;
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use Wikimedia\Rdbms\ILoadBalancer;
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/**
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* A serial provider which allocates IDs from the local database, or from a
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* shared database if $wgSharedDB is used. It is "local" in the sense that it
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* uses the same DB connection as the local wiki.
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*
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* @since 1.39
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*/
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class LocalSerialProvider extends DBSerialProvider {
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private ILoadBalancer $lb;
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/**
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* @param array $config
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* - numShards (int, default 1): A small integer. This can be set to a
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* value greater than 1 to avoid acquiring a global lock when
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* allocating IDs, at the expense of making the IDs be non-monotonic.
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* @param ILoadBalancer $lb
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*/
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public function __construct( $config, ILoadBalancer $lb ) {
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parent::__construct( $config );
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$this->lb = $lb;
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}
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protected function getDB() {
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return $this->lb->getConnection(
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DB_PRIMARY,
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[],
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false,
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// So that startAtomic() will start a commit, reducing lock time.
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// Without this flag, the transaction will be open until the start
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// of request shutdown. This could be omitted to reduce the
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// connection overhead, with numShards tuned upwards to compensate.
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ILoadBalancer::CONN_TRX_AUTOCOMMIT
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);
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}
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protected function getTableName() {
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return 'user_autocreate_serial';
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}
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}
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