X-Git-Url: https://git.mxchange.org/?a=blobdiff_plain;f=src%2FCore%2FCache%2FRedisCacheDriver.php;h=ea4eb4390a629c9c2a9b42fef9baeddcc659df2b;hb=dc0978141c444f452071f076c2309fcf67546b57;hp=fa98842da0e686f39ad4b862a50898fd873bfadb;hpb=93daf7883e98d797759fb81dbf12e9e368debf61;p=friendica.git

diff --git a/src/Core/Cache/RedisCacheDriver.php b/src/Core/Cache/RedisCacheDriver.php
index fa98842da0..ea4eb4390a 100644
--- a/src/Core/Cache/RedisCacheDriver.php
+++ b/src/Core/Cache/RedisCacheDriver.php
@@ -2,48 +2,81 @@
 
 namespace Friendica\Core\Cache;
 
-use Friendica\BaseObject;
+use Exception;
 use Friendica\Core\Cache;
+use Redis;
 
 /**
  * Redis Cache Driver. This driver is based on Memcache driver
  *
- * @author Hypolite Petovan <mrpetovan@gmail.com>
+ * @author Hypolite Petovan <hypolite@mrpetovan.com>
  * @author Roland Haeder <roland@mxchange.org>
  */
-class RedisCacheDriver extends BaseObject implements ICacheDriver
+class RedisCacheDriver extends AbstractCacheDriver implements IMemoryCacheDriver
 {
 	/**
 	 * @var Redis
 	 */
 	private $redis;
 
-	public function __construct($redis_host, $redis_port)
+	/**
+	 * @param string  $redis_host
+	 * @param int     $redis_port
+	 * @param int     $redis_db (Default = 0, maximum is 15)
+	 * @param string? $redis_pw
+	 * @throws Exception
+	 */
+	public function __construct($redis_host, $redis_port, $redis_db = 0, $redis_pw = null)
 	{
 		if (!class_exists('Redis', false)) {
-			throw new \Exception('Redis class isn\'t available');
+			throw new Exception('Redis class isn\'t available');
 		}
 
-		$this->redis = new \Redis();
+		$this->redis = new Redis();
 
 		if (!$this->redis->connect($redis_host, $redis_port)) {
-			throw new \Exception('Expected Redis server at ' . $redis_host . ':' . $redis_port . ' isn\'t available');
+			throw new Exception('Expected Redis server at ' . $redis_host . ':' . $redis_port . ' isn\'t available');
+		}
+
+		if (isset($redis_pw) && !$this->redis->auth($redis_pw)) {
+			throw new Exception('Cannot authenticate redis server at ' . $redis_host . ':' . $redis_port);
+		}
+
+		if ($redis_db !== 0 && !$this->redis->select($redis_db)) {
+			throw new Exception('Cannot switch to redis db ' . $redis_db . ' at ' . $redis_host . ':' . $redis_port);
+		}
+	}
+
+	/**
+	 * (@inheritdoc)
+	 */
+	public function getAllKeys($prefix = null)
+	{
+		if (empty($prefix)) {
+			$search = '*';
+		} else {
+			$search = $prefix . '*';
 		}
+
+		$list = $this->redis->keys($this->getCacheKey($search));
+
+		return $this->getOriginalKeys($list);
 	}
 
+	/**
+	 * (@inheritdoc)
+	 */
 	public function get($key)
 	{
 		$return = null;
+		$cachekey = $this->getCacheKey($key);
 
-		// We fetch with the hostname as key to avoid problems with other applications
-		$cached = $this->redis->get(self::getApp()->get_hostname() . ':' . $key);
-
-		// @see http://php.net/manual/en/redis.get.php#84275
-		if (is_bool($cached) || is_double($cached) || is_long($cached)) {
-			return $return;
+		$cached = $this->redis->get($cachekey);
+		if ($cached === false && !$this->redis->exists($cachekey)) {
+			return null;
 		}
 
-		$value = @unserialize($cached);
+		$value = unserialize($cached);
 
 		// Only return a value if the serialized value is valid.
 		// We also check if the db entry is a serialized
@@ -55,23 +88,104 @@ class RedisCacheDriver extends BaseObject implements ICacheDriver
 		return $return;
 	}
 
-	public function set($key, $value, $duration = Cache::MONTH)
+	/**
+	 * (@inheritdoc)
+	 */
+	public function set($key, $value, $ttl = Cache::FIVE_MINUTES)
 	{
-		// We store with the hostname as key to avoid problems with other applications
-		return $this->redis->set(
-			self::getApp()->get_hostname() . ":" . $key,
-			serialize($value),
-			time() + $duration
-		);
+		$cachekey = $this->getCacheKey($key);
+
+		$cached = serialize($value);
+
+		if ($ttl > 0) {
+			return $this->redis->setex(
+				$cachekey,
+				$ttl,
+				$cached
+			);
+		} else {
+			return $this->redis->set(
+				$cachekey,
+				$cached
+			);
+		}
 	}
 
+	/**
+	 * (@inheritdoc)
+	 */
 	public function delete($key)
 	{
-		return $this->redis->delete($key);
+		$cachekey = $this->getCacheKey($key);
+		return ($this->redis->delete($cachekey) > 0);
 	}
 
-	public function clear()
+	/**
+	 * (@inheritdoc)
+	 */
+	public function clear($outdated = true)
+	{
+		if ($outdated) {
+			return true;
+		} else {
+			return $this->redis->flushAll();
+		}
+	}
+
+	/**
+	 * (@inheritdoc)
+	 */
+	public function add($key, $value, $ttl = Cache::FIVE_MINUTES)
+	{
+		$cachekey = $this->getCacheKey($key);
+		$cached = serialize($value);
+
+		return $this->redis->setnx($cachekey, $cached);
+	}
+
+	/**
+	 * (@inheritdoc)
+	 */
+	public function compareSet($key, $oldValue, $newValue, $ttl = Cache::FIVE_MINUTES)
+	{
+		$cachekey = $this->getCacheKey($key);
+
+		$newCached = serialize($newValue);
+
+		$this->redis->watch($cachekey);
+		// If the old value isn't what we expected, somebody else changed the key meanwhile
+		if ($this->get($key) === $oldValue) {
+			if ($ttl > 0) {
+				$result = $this->redis->multi()
+					->setex($cachekey, $ttl, $newCached)
+					->exec();
+			} else {
+				$result = $this->redis->multi()
+					->set($cachekey, $newCached)
+					->exec();
+			}
+			return $result !== false;
+		}
+		$this->redis->unwatch();
+		return false;
+	}
+
+	/**
+	 * (@inheritdoc)
+	 */
+	public function compareDelete($key, $value)
 	{
-		return true;
+		$cachekey = $this->getCacheKey($key);
+
+		$this->redis->watch($cachekey);
+		// If the old value isn't what we expected, somebody else changed the key meanwhile
+		if ($this->get($key) === $value) {
+			$result = $this->redis->multi()
+				->del($cachekey)
+				->exec();
+			return $result !== false;
+		}
+		$this->redis->unwatch();
+		return false;
 	}
 }