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<?php |
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namespace Doctrine\Common\Cache; |
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use Predis\ClientInterface; |
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use function array_combine; |
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use function array_filter; |
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use function array_map; |
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use function call_user_func_array; |
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use function serialize; |
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use function unserialize; |
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/** |
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* Predis cache provider. |
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*/ |
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class PredisCache extends CacheProvider |
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{ |
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/** @var ClientInterface */ |
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private $client; |
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public function __construct(ClientInterface $client) |
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{ |
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$this->client = $client; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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protected function doFetch($id) |
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{ |
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$result = $this->client->get($id); |
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if ($result === null) { |
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return false; |
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} |
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return unserialize($result); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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protected function doFetchMultiple(array $keys) |
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{ |
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$fetchedItems = call_user_func_array([$this->client, 'mget'], $keys); |
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return array_map('unserialize', array_filter(array_combine($keys, $fetchedItems))); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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protected function doSaveMultiple(array $keysAndValues, $lifetime = 0) |
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{ |
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if ($lifetime) { |
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$success = true; |
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// Keys have lifetime, use SETEX for each of them |
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foreach ($keysAndValues as $key => $value) { |
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$response = (string) $this->client->setex($key, $lifetime, serialize($value)); |
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if ($response == 'OK') { |
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continue; |
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} |
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$success = false; |
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} |
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return $success; |
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} |
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// No lifetime, use MSET |
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$response = $this->client->mset(array_map(function ($value) { |
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return serialize($value); |
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}, $keysAndValues)); |
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return (string) $response == 'OK'; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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protected function doContains($id) |
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{ |
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return (bool) $this->client->exists($id); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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protected function doSave($id, $data, $lifeTime = 0) |
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{ |
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$data = serialize($data); |
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if ($lifeTime > 0) { |
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$response = $this->client->setex($id, $lifeTime, $data); |
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} else { |
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$response = $this->client->set($id, $data); |
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} |
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return $response === true || $response == 'OK'; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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protected function doDelete($id) |
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{ |
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return $this->client->del($id) >= 0; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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protected function doDeleteMultiple(array $keys) |
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{ |
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return $this->client->del($keys) >= 0; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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protected function doFlush() |
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{ |
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$response = $this->client->flushdb(); |
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return $response === true || $response == 'OK'; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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protected function doGetStats() |
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{ |
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$info = $this->client->info(); |
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return [ |
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Cache::STATS_HITS => $info['Stats']['keyspace_hits'], |
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Cache::STATS_MISSES => $info['Stats']['keyspace_misses'], |
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Cache::STATS_UPTIME => $info['Server']['uptime_in_seconds'], |
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Cache::STATS_MEMORY_USAGE => $info['Memory']['used_memory'], |
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Cache::STATS_MEMORY_AVAILABLE => false, |
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]; |
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} |
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} |
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