1<?php
2
3/**
4 * Deferrable update that must run outside of any explicit LBFactory transaction round
5 *
6 * @since 1.31
7 */
8class TransactionRoundDefiningUpdate
9	implements DeferrableUpdate, DeferrableCallback, TransactionRoundAwareUpdate
10{
11	/** @var callable|null */
12	private $callback;
13	/** @var string */
14	private $fname;
15
16	/**
17	 * @param callable $callback
18	 * @param string $fname Calling method
19	 */
20	public function __construct( callable $callback, $fname = 'unknown' ) {
21		$this->callback = $callback;
22		$this->fname = $fname;
23	}
24
25	public function doUpdate() {
26		call_user_func( $this->callback );
27	}
28
29	public function getOrigin() {
30		return $this->fname;
31	}
32
33	/**
34	 * @return int One of the class TRX_ROUND_* constants
35	 * @since 1.34
36	 */
37	final public function getTransactionRoundRequirement() {
38		return self::TRX_ROUND_ABSENT;
39	}
40}
41