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<?php |
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namespace BenTools\MercurePHP\Storage\PHP; |
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use BenTools\MercurePHP\Model\Message; |
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use BenTools\MercurePHP\Model\Subscription; |
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use BenTools\MercurePHP\Security\TopicMatcher; |
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use BenTools\MercurePHP\Storage\StorageInterface; |
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use React\Promise\PromiseInterface; |
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use function React\Promise\resolve; |
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final class PHPStorage implements StorageInterface |
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{ |
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private int $messagesMaxSize; |
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private int $currentMessagesSize = 0; |
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private array $messages = []; |
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/** |
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* @var Subscription[] |
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*/ |
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private array $subscriptions = []; |
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private ?string $lastEventID = null; |
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public function __construct(int $size) |
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{ |
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$this->messagesMaxSize = $size; |
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} |
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public function getLastEventID(): PromiseInterface |
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{ |
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return resolve($this->lastEventID); |
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} |
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public function retrieveMessagesAfterID(string $id, array $subscribedTopics): PromiseInterface |
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{ |
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if (self::EARLIEST === $id) { |
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return resolve($this->getAllMessages($subscribedTopics)); |
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} |
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return resolve($this->getMessagesAfterId($id, $subscribedTopics)); |
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} |
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public function storeMessage(string $topic, Message $message): PromiseInterface |
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{ |
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if (0 === $this->messagesMaxSize) { |
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return resolve(true); |
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} |
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if ($this->currentMessagesSize >= $this->messagesMaxSize) { |
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\array_shift($this->messages); |
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} |
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$this->messages[] = [$topic, $message]; |
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$this->currentMessagesSize++; |
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$this->lastEventID = $message->getId(); |
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return resolve(true); |
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} |
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public function storeSubscriptions(array $subscriptions): PromiseInterface |
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{ |
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foreach ($subscriptions as $subscription) { |
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$this->subscriptions[] = $subscription; |
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} |
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return resolve(); |
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} |
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public function removeSubscriptions(iterable $subscriptions): PromiseInterface |
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{ |
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$subscriptions = \iterable_to_array($subscriptions); |
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foreach ($subscriptions as $subscription) { |
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foreach ($this->subscriptions as $key => $_subscription) { |
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if ($_subscription->getId() === $subscription->getId()) { |
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unset($this->subscriptions[$key]); |
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} |
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} |
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} |
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return resolve(); |
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} |
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public function findSubscriptions(?string $topic = null, ?string $subscriber = null): PromiseInterface |
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{ |
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return resolve($this->filterSubscriptions($topic, $subscriber)); |
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} |
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private function filterSubscriptions(?string $topic, ?string $subscriber): iterable |
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{ |
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foreach ($this->subscriptions as $subscription) { |
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$matchSubscriberPattern = TopicMatcher::matchesTopicSelectors( |
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$subscription->getSubscriber(), |
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[$subscriber ?? '{subscriber}'] |
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); |
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$matchSubscriber = (null === $subscriber || $matchSubscriberPattern); |
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$matchTopicPattern = TopicMatcher::matchesTopicSelectors( |
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$subscription->getTopic(), |
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[$topic ?? '{topic}'] |
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); |
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$matchTopic = (null === $topic || $matchTopicPattern); |
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if ($matchSubscriber && $matchTopic) { |
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yield $subscription; |
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} |
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} |
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} |
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private function getMessagesAfterId(string $id, array $subscribedTopics): iterable |
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{ |
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$ignore = true; |
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foreach ($this->messages as [$topic, $message]) { |
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if ($message->getId() === $id) { |
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$ignore = false; |
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continue; |
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} |
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if ($ignore || !TopicMatcher::matchesTopicSelectors($topic, $subscribedTopics)) { |
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continue; |
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} |
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yield $topic => $message; |
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} |
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} |
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private function getAllMessages(array $subscribedTopics): iterable |
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{ |
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foreach ($this->messages as [$topic, $message]) { |
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if (!TopicMatcher::matchesTopicSelectors($topic, $subscribedTopics)) { |
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continue; |
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} |
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yield $topic => $message; |
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} |
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} |
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} |
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bpolaszek /
mercure-php-hub
