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- <?php
- namespace Doctrine\Common\Cache;
- use Redis;
- use function array_combine;
- use function defined;
- use function extension_loaded;
- use function is_bool;
- /**
- * Redis cache provider.
- *
- * @link www.doctrine-project.org
- */
- class RedisCache extends CacheProvider
- {
- /** @var Redis|null */
- private $redis;
- /**
- * Sets the redis instance to use.
- *
- * @return void
- */
- public function setRedis(Redis $redis)
- {
- $redis->setOption(Redis::OPT_SERIALIZER, $this->getSerializerValue());
- $this->redis = $redis;
- }
- /**
- * Gets the redis instance used by the cache.
- *
- * @return Redis|null
- */
- public function getRedis()
- {
- return $this->redis;
- }
- /**
- * {@inheritdoc}
- */
- protected function doFetch($id)
- {
- return $this->redis->get($id);
- }
- /**
- * {@inheritdoc}
- */
- protected function doFetchMultiple(array $keys)
- {
- $fetchedItems = array_combine($keys, $this->redis->mget($keys));
- // Redis mget returns false for keys that do not exist. So we need to filter those out unless it's the real data.
- $foundItems = [];
- foreach ($fetchedItems as $key => $value) {
- if ($value === false && ! $this->redis->exists($key)) {
- continue;
- }
- $foundItems[$key] = $value;
- }
- return $foundItems;
- }
- /**
- * {@inheritdoc}
- */
- protected function doSaveMultiple(array $keysAndValues, $lifetime = 0)
- {
- if ($lifetime) {
- $success = true;
- // Keys have lifetime, use SETEX for each of them
- foreach ($keysAndValues as $key => $value) {
- if ($this->redis->setex($key, $lifetime, $value)) {
- continue;
- }
- $success = false;
- }
- return $success;
- }
- // No lifetime, use MSET
- return (bool) $this->redis->mset($keysAndValues);
- }
- /**
- * {@inheritdoc}
- */
- protected function doContains($id)
- {
- $exists = $this->redis->exists($id);
- if (is_bool($exists)) {
- return $exists;
- }
- return $exists > 0;
- }
- /**
- * {@inheritdoc}
- */
- protected function doSave($id, $data, $lifeTime = 0)
- {
- if ($lifeTime > 0) {
- return $this->redis->setex($id, $lifeTime, $data);
- }
- return $this->redis->set($id, $data);
- }
- /**
- * {@inheritdoc}
- */
- protected function doDelete($id)
- {
- return $this->redis->delete($id) >= 0;
- }
- /**
- * {@inheritdoc}
- */
- protected function doDeleteMultiple(array $keys)
- {
- return $this->redis->delete($keys) >= 0;
- }
- /**
- * {@inheritdoc}
- */
- protected function doFlush()
- {
- return $this->redis->flushDB();
- }
- /**
- * {@inheritdoc}
- */
- protected function doGetStats()
- {
- $info = $this->redis->info();
- return [
- Cache::STATS_HITS => $info['keyspace_hits'],
- Cache::STATS_MISSES => $info['keyspace_misses'],
- Cache::STATS_UPTIME => $info['uptime_in_seconds'],
- Cache::STATS_MEMORY_USAGE => $info['used_memory'],
- Cache::STATS_MEMORY_AVAILABLE => false,
- ];
- }
- /**
- * Returns the serializer constant to use. If Redis is compiled with
- * igbinary support, that is used. Otherwise the default PHP serializer is
- * used.
- *
- * @return int One of the Redis::SERIALIZER_* constants
- */
- protected function getSerializerValue()
- {
- if (defined('Redis::SERIALIZER_IGBINARY') && extension_loaded('igbinary')) {
- return Redis::SERIALIZER_IGBINARY;
- }
- return Redis::SERIALIZER_PHP;
- }
- }
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