Code Coverage |
||||||||||
Lines |
Functions and Methods |
Classes and Traits |
||||||||
| Total | |
100.00% |
26 / 26 |
|
100.00% |
4 / 4 |
CRAP | |
100.00% |
1 / 1 |
| EditResultCache | |
100.00% |
26 / 26 |
|
100.00% |
4 / 4 |
7 | |
100.00% |
1 / 1 |
| __construct | |
100.00% |
4 / 4 |
|
100.00% |
1 / 1 |
1 | |||
| set | |
100.00% |
6 / 6 |
|
100.00% |
1 / 1 |
1 | |||
| get | |
100.00% |
15 / 15 |
|
100.00% |
1 / 1 |
4 | |||
| makeKey | |
100.00% |
1 / 1 |
|
100.00% |
1 / 1 |
1 | |||
| 1 | <?php |
| 2 | /** |
| 3 | * @license GPL-2.0-or-later |
| 4 | * @file |
| 5 | */ |
| 6 | |
| 7 | namespace MediaWiki\Storage; |
| 8 | |
| 9 | use MediaWiki\Config\ServiceOptions; |
| 10 | use MediaWiki\Json\FormatJson; |
| 11 | use MediaWiki\MainConfigNames; |
| 12 | use Wikimedia\ObjectCache\BagOStuff; |
| 13 | use Wikimedia\Rdbms\IConnectionProvider; |
| 14 | |
| 15 | /** |
| 16 | * Class allowing easy storage and retrieval of EditResults associated with revisions. |
| 17 | * |
| 18 | * EditResults are stored in the main object stash and (depending on wiki's configuration) |
| 19 | * in revert change tags. This class stores the relevant data in the main stash. When |
| 20 | * asked to retrieve an EditResult for an edit and the requested key is not present in the |
| 21 | * main stash, the class will attempt to retrieve the EditResult from revert tags. |
| 22 | * |
| 23 | * @internal Used by RevertedTagUpdateManager |
| 24 | * @since 1.36 |
| 25 | * @author Ostrzyciel |
| 26 | */ |
| 27 | class EditResultCache { |
| 28 | |
| 29 | public const CONSTRUCTOR_OPTIONS = [ |
| 30 | MainConfigNames::RCMaxAge, |
| 31 | ]; |
| 32 | |
| 33 | private const CACHE_KEY_PREFIX = 'EditResult'; |
| 34 | |
| 35 | /** @var BagOStuff */ |
| 36 | private $mainObjectStash; |
| 37 | |
| 38 | /** @var IConnectionProvider */ |
| 39 | private $dbProvider; |
| 40 | |
| 41 | /** @var ServiceOptions */ |
| 42 | private $options; |
| 43 | |
| 44 | /** |
| 45 | * @param BagOStuff $mainObjectStash Main object stash, see |
| 46 | * MediaWikiServices::getMainObjectStash() |
| 47 | * @param IConnectionProvider $dbProvider |
| 48 | * @param ServiceOptions $options |
| 49 | */ |
| 50 | public function __construct( |
| 51 | BagOStuff $mainObjectStash, |
| 52 | IConnectionProvider $dbProvider, |
| 53 | ServiceOptions $options |
| 54 | ) { |
| 55 | $options->assertRequiredOptions( self::CONSTRUCTOR_OPTIONS ); |
| 56 | |
| 57 | $this->mainObjectStash = $mainObjectStash; |
| 58 | $this->dbProvider = $dbProvider; |
| 59 | $this->options = $options; |
| 60 | } |
| 61 | |
| 62 | /** |
| 63 | * Store the EditResult in the main object stash. |
| 64 | * |
| 65 | * @param int $revisionId |
| 66 | * @param EditResult $editResult |
| 67 | * |
| 68 | * @return bool Success |
| 69 | */ |
| 70 | public function set( int $revisionId, EditResult $editResult ): bool { |
| 71 | return $this->mainObjectStash->set( |
| 72 | $this->makeKey( $revisionId ), |
| 73 | FormatJson::encode( $editResult ), |
| 74 | // Patrol flags are not stored for longer than $wgRCMaxAge |
| 75 | $this->options->get( MainConfigNames::RCMaxAge ), |
| 76 | BagOStuff::WRITE_BACKGROUND |
| 77 | ); |
| 78 | } |
| 79 | |
| 80 | /** |
| 81 | * Get an EditResult for the given revision ID. |
| 82 | * |
| 83 | * Will first attempt to get the EditResult from the main stash. If this fails, it |
| 84 | * will try to retrieve the EditResult from revert change tags of this revision. |
| 85 | * |
| 86 | * @param int $revisionId |
| 87 | * |
| 88 | * @return EditResult|null Returns null on failure |
| 89 | */ |
| 90 | public function get( int $revisionId ): ?EditResult { |
| 91 | $result = $this->mainObjectStash->get( $this->makeKey( $revisionId ) ); |
| 92 | |
| 93 | // not found in stash, try change tags |
| 94 | if ( !$result ) { |
| 95 | $result = $this->dbProvider->getReplicaDatabase()->newSelectQueryBuilder() |
| 96 | ->select( 'ct_params' ) |
| 97 | ->from( 'change_tag' ) |
| 98 | ->join( 'change_tag_def', null, 'ctd_id = ct_tag_id' ) |
| 99 | ->where( [ |
| 100 | 'ct_rev_id' => $revisionId, |
| 101 | 'ctd_name' => [ 'mw-rollback', 'mw-undo', 'mw-manual-revert' ] |
| 102 | ] ) |
| 103 | ->caller( __METHOD__ )->fetchField(); |
| 104 | } |
| 105 | |
| 106 | if ( !$result ) { |
| 107 | return null; |
| 108 | } |
| 109 | |
| 110 | $decoded = FormatJson::decode( $result, true ); |
| 111 | return $decoded ? EditResult::newFromArray( $decoded ) : null; |
| 112 | } |
| 113 | |
| 114 | /** |
| 115 | * Generates a cache key for the given revision ID. |
| 116 | * |
| 117 | * @param int $revisionId |
| 118 | * |
| 119 | * @return string |
| 120 | */ |
| 121 | private function makeKey( int $revisionId ): string { |
| 122 | return $this->mainObjectStash->makeKey( self::CACHE_KEY_PREFIX, $revisionId ); |
| 123 | } |
| 124 | } |