Add ICacheDriver->getAllKeys method
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@ -46,6 +46,29 @@ class Cache extends \Friendica\BaseObject
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return self::$driver;
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}
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/**
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* @brief Returns all the cache keys sorted alphabetically
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*
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* @return array|null Null if the driver doesn't support this feature
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*/
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public static function getAllKeys()
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{
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$time = microtime(true);
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$return = self::getDriver()->getAllKeys();
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// Keys are prefixed with the node hostname, let's remove it
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array_walk($return, function (&$value) {
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$value = preg_replace('/^' . self::getApp()->get_hostname() . ':/', '', $value);
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});
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sort($return);
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self::getApp()->save_timestamp($time, 'cache');
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return $return;
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}
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/**
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* @brief Fetch cached data according to the key
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*
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@ -19,6 +19,14 @@ class ArrayCache extends AbstractCacheDriver implements IMemoryCacheDriver
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/** @var array Array with the cached data */
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protected $cachedData = array();
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/**
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* (@inheritdoc)
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*/
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public function getAllKeys()
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{
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return array_keys($this->cachedData);
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}
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/**
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* (@inheritdoc)
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*/
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@ -13,6 +13,16 @@ use Friendica\Util\DateTimeFormat;
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*/
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class DatabaseCacheDriver extends AbstractCacheDriver implements ICacheDriver
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{
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/**
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* (@inheritdoc)
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*/
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public function getAllKeys()
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{
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$stmt = DBA::select('cache', ['k'], ['`expires` >= ?', DateTimeFormat::utcNow()]);
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return DBA::toArray($stmt);
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}
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/**
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* (@inheritdoc)
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*/
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@ -11,6 +11,13 @@ use Friendica\Core\Cache;
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*/
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interface ICacheDriver
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{
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/**
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* Lists all cache keys
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*
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* @return array|null Null if it isn't supported by the cache driver
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*/
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public function getAllKeys();
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/**
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* Fetches cached data according to the key
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*
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@ -40,6 +40,28 @@ class MemcacheCacheDriver extends AbstractCacheDriver implements IMemoryCacheDri
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}
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}
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/**
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* (@inheritdoc)
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*/
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public function getAllKeys()
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{
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$list = [];
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$allSlabs = $this->memcache->getExtendedStats('slabs');
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foreach($allSlabs as $slabs) {
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foreach(array_keys($slabs) as $slabId) {
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$cachedump = $this->memcache->getExtendedStats('cachedump', (int)$slabId);
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foreach($cachedump as $keys => $arrVal) {
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if (!is_array($arrVal)) {
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continue;
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}
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$list = array_merge($list, array_keys($arrVal));
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}
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}
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}
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return $list;
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}
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/**
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* (@inheritdoc)
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*/
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@ -53,6 +53,14 @@ class MemcachedCacheDriver extends AbstractCacheDriver implements IMemoryCacheDr
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}
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}
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/**
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* (@inheritdoc)
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*/
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public function getAllKeys()
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{
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return $this->memcached->getAllKeys();
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}
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/**
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* (@inheritdoc)
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*/
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@ -38,6 +38,14 @@ class RedisCacheDriver extends AbstractCacheDriver implements IMemoryCacheDriver
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}
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}
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/**
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* (@inheritdoc)
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*/
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public function getAllKeys()
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{
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return null;
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}
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/**
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* (@inheritdoc)
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*/
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