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 2.02
1<?php
2/**
3 * WikiLambda ZObject secondary data remover for when ZObjects are deleted
4 *
5 * @file
6 * @ingroup Extensions
7 * @copyright 2020– Abstract Wikipedia team; see AUTHORS.txt
8 * @license MIT
9 */
10
11namespace MediaWiki\Extension\WikiLambda\ZObjectContent;
12
13use MediaWiki\Deferred\DataUpdate;
14use MediaWiki\Extension\WikiLambda\Cache\MemcachedWrapper;
15use MediaWiki\Extension\WikiLambda\Registry\ZObjectRegistry;
16use MediaWiki\Extension\WikiLambda\ZObjectStore;
17use MediaWiki\Logger\LoggerFactory;
18use MediaWiki\Title\Title;
19use Psr\Log\LoggerInterface;
20
21class ZObjectSecondaryDataRemoval extends DataUpdate {
22
23    private LoggerInterface $logger;
24
25    /**
26     * @param Title $title
27     * @param ZObjectStore $zObjectStore
28     * @param MemcachedWrapper $zObjectCache
29     */
30    public function __construct(
31        private readonly Title $title,
32        private readonly ZObjectStore $zObjectStore,
33        private readonly MemcachedWrapper $zObjectCache
34    ) {
35        // Non-injected items
36        $this->logger = LoggerFactory::getInstance( 'WikiLambda' );
37    }
38
39    /**
40     * Main entry point for removing all secondary data related to a ZObject.
41     *
42     * @return void
43     */
44    public function doUpdate() {
45        $zid = $this->title->getDBkey();
46
47        $this->logger->info(
48            __METHOD__ . ': Removing secondary data for {zid}',
49            [ 'zid' => $zid ]
50        );
51
52        // Remove all secondary store data for the given ZID.
53        $this->zObjectStore->deleteZObjectLabelsByZid( $zid );
54        $this->zObjectStore->deleteZObjectLabelConflictsByZid( $zid );
55        $this->zObjectStore->deleteZFunctionReference( $zid );
56        $this->zObjectStore->deleteRelatedZObjects( $zid );
57        $this->zObjectStore->deleteZLanguageFromLanguagesCache( $zid );
58
59        // If the ZObject is an implementation or tester, remove its reference from the function.
60        $this->zObjectStore->removeFunctionReferenceIfImplementationOrTester( $zid );
61
62        // Remove all rows where the deleted ZObject is the related_zobject.
63        $this->zObjectStore->deleteRelatedZObjects( null, null, null, $zid );
64
65        // Clear tester result caches for this ZID.
66        $this->zObjectStore->deleteZFunctionFromZTesterResultsCache( $zid );
67        $this->zObjectStore->deleteZImplementationFromZTesterResultsCache( $zid );
68        $this->zObjectStore->deleteZTesterFromZTesterResultsCache( $zid );
69
70        // Unregister the ZID from caches and clear object cache.
71        ZObjectRegistry::unregisterZid( $zid );
72        $cacheKey = $this->zObjectCache->makeKey( ZObjectStore::ZOBJECT_CACHE_KEY_PREFIX, $zid );
73        $cacheResult = $this->zObjectCache->delete( $cacheKey );
74        if ( !$cacheResult ) {
75            $this->logger->warning(
76                __METHOD__ . ': Failed to delete object cache for {zid}',
77                [ 'zid' => $zid ]
78            );
79        }
80    }
81}