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vendor/doctrine/cache/lib/Doctrine/Common/Cache/RedisCache.php

@@ -0,0 +1,175 @@
+<?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;
+    }
+}