* Returns static::DENY if any of the rules evaluated to static::DENY
* Otherwise returns NULL
*
*/
class ChainResponsePolicy implements ChainResponsePolicyInterface {
/**
* A list of policy rules to apply when this policy is checked.
*
* @var \Drupal\Core\PageCache\ResponsePolicyInterface[]
*/
protected $rules = [];
/**
* {@inheritdoc}
*/
public function check(Response $response, Request $request) {
foreach ($this->rules as $rule) {
$result = $rule->check($response, $request);
if ($result === static::DENY) {
return $result;
}
elseif (isset($result)) {
throw new \UnexpectedValueException('Return value of ResponsePolicyInterface::check() must be one of ResponsePolicyInterface::DENY or NULL');
}
}
}
/**
* {@inheritdoc}
*/
public function addPolicy(ResponsePolicyInterface $policy) {
$this->rules[] = $policy;
return $this;
}
}