first commit

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

@@ -0,0 +1,143 @@
+<?php
+
+namespace Doctrine\Common\Cache;
+
+use Predis\ClientInterface;
+use function array_combine;
+use function array_filter;
+use function array_map;
+use function call_user_func_array;
+use function serialize;
+use function unserialize;
+
+/**
+ * Predis cache provider.
+ */
+class PredisCache extends CacheProvider
+{
+    /** @var ClientInterface */
+    private $client;
+
+    public function __construct(ClientInterface $client)
+    {
+        $this->client = $client;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function doFetch($id)
+    {
+        $result = $this->client->get($id);
+        if ($result === null) {
+            return false;
+        }
+
+        return unserialize($result);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function doFetchMultiple(array $keys)
+    {
+        $fetchedItems = call_user_func_array([$this->client, 'mget'], $keys);
+
+        return array_map('unserialize', array_filter(array_combine($keys, $fetchedItems)));
+    }
+
+    /**
+     * {@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) {
+                $response = (string) $this->client->setex($key, $lifetime, serialize($value));
+
+                if ($response == 'OK') {
+                    continue;
+                }
+
+                $success = false;
+            }
+
+            return $success;
+        }
+
+        // No lifetime, use MSET
+        $response = $this->client->mset(array_map(static function ($value) {
+            return serialize($value);
+        }, $keysAndValues));
+
+        return (string) $response == 'OK';
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function doContains($id)
+    {
+        return (bool) $this->client->exists($id);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function doSave($id, $data, $lifeTime = 0)
+    {
+        $data = serialize($data);
+        if ($lifeTime > 0) {
+            $response = $this->client->setex($id, $lifeTime, $data);
+        } else {
+            $response = $this->client->set($id, $data);
+        }
+
+        return $response === true || $response == 'OK';
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function doDelete($id)
+    {
+        return $this->client->del($id) >= 0;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function doDeleteMultiple(array $keys)
+    {
+        return $this->client->del($keys) >= 0;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function doFlush()
+    {
+        $response = $this->client->flushdb();
+
+        return $response === true || $response == 'OK';
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function doGetStats()
+    {
+        $info = $this->client->info();
+
+        return [
+            Cache::STATS_HITS              => $info['Stats']['keyspace_hits'],
+            Cache::STATS_MISSES            => $info['Stats']['keyspace_misses'],
+            Cache::STATS_UPTIME            => $info['Server']['uptime_in_seconds'],
+            Cache::STATS_MEMORY_USAGE      => $info['Memory']['used_memory'],
+            Cache::STATS_MEMORY_AVAILABLE  => false,
+        ];
+    }
+}