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Ticket #1299: resolve-topic-slug-collisions.php

File resolve-topic-slug-collisions.php, 1.3 KB (added by SergeyBiryukov, 10 years ago)

Line
1	<?php
2	/*
3	Plugin Name: Resolve Topic Slug Collisions
4	Description: Resolves long topic slug collisions in Memcached due to the 250 chars key length.
5	Author: wordpressdotorg
6	Author URI: http://wordpress.org/
7	Version: 1.0
8	License: GPLv2
9	License URI: http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
10	*/
11
12	/**
13	* Resolves long topic slug collisions by pre-matching topic slugs to IDs
14	* in order to bypass the 'bb_topic_slug' cache group in get_topic(),
15	* which produces erroneous results for slugs close to 250 chars length
16	* due to Memcached key size limit.
17	*
18	* @param string\|int $topic_slug Requested topic slug or ID.
19	* @return int\|string Topic ID if resolved, topic slug otherwise.
20	*/
21	function wporg_resolve_topic_slug_collisions( $topic_slug ) {
22	if ( is_numeric( $topic_slug ) ) {
23	return $topic_slug;
24	}
25
26	$location = bb_get_location();
27
28	if ( ! in_array( $location, array( 'topic-page', 'topic-edit-page' ) ) ) {
29	return $topic_slug;
30	}
31
32	$topic_id = wp_cache_get( md5( $topic_slug ), 'bb_topic_slug_md5' );
33
34	if ( false === $topic_id ) {
35	$topic_id = bb_get_id_from_slug( 'topic', $topic_slug );
36
37	wp_cache_add( md5( $topic_slug ), $topic_id, 'bb_topic_slug_md5' );
38	}
39
40	return $topic_id;
41	}
42	add_filter( 'bb_repermalink', 'wporg_resolve_topic_slug_collisions' );