/**
* @throws Behance\NBD\Cache\Exceptions\SystemRequirementException when memcache extension is not loaded
*
* @param Symfony\Component\EventDispatcher\EventDispatcherInterface $event_dispatcher
* @param Memcache $instance
*/
public function __construct(EventDispatcherInterface $event_dispatcher = null, \Memcache $instance = null)
{
$this->_connection = $instance ?: new \Memcache();
// Really unfortunate to have to do this
$this->_memcache_get_requires_filler = (new \ReflectionMethod('Memcache', 'get'))->getNumberOfParameters() > 1;
parent::__construct($event_dispatcher);
}
/**
* {@inheritDoc}
*/
protected function _execute(\Closure $action, $operation, $key_or_keys, $mutable = false, $value = null)
{
$result = parent::_execute($action, $operation, $key_or_keys, $mutable, $value);
// Adapter connection itself will only report correctly when not currently buffering results
if (!$this->isBuffering()) {
$code = $this->_connection->getResultCode();
if ($code !== \Memcached::RES_SUCCESS) {
$this->_handleFailure($this->_connection->getResultMessage(), null, null, $code);
}
}
// if !isBuffering
return $result;
}
/**
* {@inheritDoc}
*
* @link https://github.com/phpredis/phpredis#class-redisexception
*/
protected function _execute(\Closure $action, $operation, $key_or_keys, $mutable = false, $value = null)
{
// Redis may throw an exception for any connectivity error, unlike memcache and memcached. Suppress exception, log, and return false
$protected_action = function () use($action) {
try {
return $action();
} catch (\RedisException $e) {
$this->_handleFailure($e->getMessage(), null, null, $e->getCode());
return false;
}
};
// protected_action
return parent::_execute($protected_action, $operation, $key_or_keys, $mutable, $value);
}