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<?php |
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/******************************************************************************* |
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* This file is part of the GraphQL Bundle package. |
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* |
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* (c) YnloUltratech <[email protected]> |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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******************************************************************************/ |
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namespace Ynlo\GraphQLBundle\Subscription\PubSub; |
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class RedisPubSubHandler implements PubSubHandlerInterface |
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{ |
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/** |
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* @var \Redis |
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*/ |
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protected $client; |
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/** |
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* @var \Redis |
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*/ |
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protected $consumer; |
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/** |
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* @var string |
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*/ |
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protected $prefix; |
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/** |
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* RedisPubSubHandler constructor. |
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* |
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* @param array $config |
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*/ |
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public function __construct(array $config) |
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{ |
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// solution to fix phpredis connection error bug: https://github.com/phpredis/phpredis/issues/70 |
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ini_set('default_socket_timeout', -1); |
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$host = $config['host'] ?? 'localhost'; |
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$port = $config['port'] ?? 6379; |
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$this->prefix = $config['prefix'] ?? 'GraphQLSubscription:'; |
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$this->client = new \Redis(); |
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$this->client->connect($host, $port); |
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$this->client->setOption(\Redis::OPT_PREFIX, $this->prefix); |
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$this->consumer = new \Redis(); |
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$this->consumer->connect($host, $port); |
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$this->consumer->setOption(\Redis::OPT_PREFIX, $this->prefix); |
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} |
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/** |
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* @inheritDoc |
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*/ |
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public function sub(string $channel, string $id, array $meta, \DateTime $expireAt = null): void |
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{ |
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$key = sprintf('%s:%s', $channel, $id); |
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$alreadyExists = $this->exists($id); |
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$ttl = $this->client->ttl($key); |
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$this->client->set($key, serialize($meta)); |
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if ($alreadyExists) { |
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if ($expireAt && $expireAt->getTimestamp() - $ttl > time()) { |
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$this->client->expireAt($key, $expireAt->format('U')); |
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} else { |
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$this->client->setTimeout($key, $ttl); |
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} |
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} elseif ($expireAt) { |
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$this->client->expireAt($key, $expireAt->format('U')); |
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} |
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$iterator = null; |
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} |
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/** |
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* @inheritDoc |
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*/ |
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public function pub(string $channel, array $filters = [], array $data = []): void |
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{ |
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$this->client->publish($channel, serialize([$filters, $data])); |
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} |
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/** |
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* @inheritDoc |
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*/ |
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public function touch(string $id, \DateTime $expireAt): void |
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{ |
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$iterator = null; |
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while ($iterator !== 0) { |
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while ($keys = $this->client->scan($iterator, "*:$id*")) { |
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foreach ($keys as $key) { |
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$key = $this->unprefix($key); |
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$this->client->expireAt($key, $expireAt->format('U')); |
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} |
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} |
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} |
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} |
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/** |
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* @inheritDoc |
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*/ |
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public function del(string $id): void |
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{ |
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$iterator = null; |
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while ($iterator !== 0) { |
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while ($keys = $this->client->scan($iterator, "*:$id*")) { |
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$this->client->del($keys); |
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} |
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} |
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} |
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/** |
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* @inheritDoc |
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*/ |
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public function exists(string $id): bool |
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{ |
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$iterator = null; |
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while ($iterator !== 0) { |
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$keys = $this->client->scan($iterator, "*:$id*"); |
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if (!empty($keys)) { |
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return true; |
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} |
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} |
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return false; |
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} |
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/** |
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* @inheritDoc |
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*/ |
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public function consume(array $channels, callable $dispatch): void |
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{ |
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$this->consumer->subscribe( |
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$channels, |
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function (\Redis $redis, $chan, $event) use ($dispatch) { |
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$iterator = null; |
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while ($iterator !== 0) { |
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while ($keys = $this->client->scan($iterator, "*$chan:*", 100)) { |
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[$filters, $data] = unserialize($event, [true]); |
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foreach ($keys as $key) { |
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$key = $this->unprefix($key); |
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$chan = $this->unprefix($chan); |
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$meta = $this->client->get($key); |
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preg_match("/$chan:(.+)/", $key, $matches); |
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if ($matches) { |
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$message = new SubscriptionMessage( |
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$chan, |
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$matches[1], |
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$data, |
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$filters, |
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unserialize($meta, [true]) |
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); |
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$dispatch($message); |
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} |
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} |
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} |
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} |
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} |
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); |
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} |
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/** |
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* Helper to remove prefix |
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* |
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* @param string $key |
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* |
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* @return string |
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*/ |
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private function unprefix($key): string |
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{ |
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return str_replace($this->prefix, null, $key); |
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} |
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} |
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ynloultratech /
graphql-bundle
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