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| 1 | <?php |
| 2 | |
| 3 | namespace MediaWiki\Extension\MediaUploader\Config; |
| 4 | |
| 5 | use WANObjectCache; |
| 6 | |
| 7 | /** |
| 8 | * A relatively lightweight class intended for use when the config cache has to be |
| 9 | * explicitly invalidated. |
| 10 | */ |
| 11 | class ConfigCacheInvalidator { |
| 12 | |
| 13 | /** @var WANObjectCache */ |
| 14 | private $cache; |
| 15 | |
| 16 | /** |
| 17 | * @param WANObjectCache $cache |
| 18 | */ |
| 19 | public function __construct( WANObjectCache $cache ) { |
| 20 | $this->cache = $cache; |
| 21 | } |
| 22 | |
| 23 | /** |
| 24 | * Returns the key used to store the last time the config cache was invalidated. |
| 25 | * |
| 26 | * @param string ...$additionalComponents Additional cache key components |
| 27 | * |
| 28 | * @return string |
| 29 | */ |
| 30 | public function makeInvalidateTimestampKey( string ...$additionalComponents ): string { |
| 31 | return $this->cache->makeKey( |
| 32 | 'mediauploader', |
| 33 | 'parsed-config', |
| 34 | 'invalidate', |
| 35 | ...$additionalComponents |
| 36 | ); |
| 37 | } |
| 38 | |
| 39 | /** |
| 40 | * Invalidate the cache for the corresponding config, in all languages and genders. |
| 41 | * |
| 42 | * Does so by simply writing a new invalidate timestamp to cache. |
| 43 | * Since this invalidate timestamp is checked on every read, the cached entries |
| 44 | * for the config will be regenerated the next time there is a read. |
| 45 | * |
| 46 | * @param string ...$additionalComponents |
| 47 | */ |
| 48 | public function invalidate( string ...$additionalComponents ): void { |
| 49 | $this->cache->touchCheckKey( |
| 50 | $this->makeInvalidateTimestampKey( ...$additionalComponents ) |
| 51 | ); |
| 52 | } |
| 53 | } |