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<?php |
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namespace Tomaj\Hermes\Driver; |
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use Exception; |
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use Tomaj\Hermes\MessageInterface; |
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use Closure; |
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use Tomaj\Hermes\MessageSerializer; |
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use InvalidArgumentException; |
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class RedisSetDriver implements DriverInterface |
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{ |
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use MaxItemsTrait; |
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use SerializerAwareTrait; |
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/** |
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* @var string |
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*/ |
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private $key; |
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/** |
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* @var string |
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*/ |
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private $scheduleKey; |
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/** |
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* @var Redis|Predis\Client |
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*/ |
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private $redis; |
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/** |
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* @var integer |
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*/ |
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private $refreshInterval; |
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/** |
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* Create new RedisSetDriver |
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* |
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* This driver is using redis set. With send message it add new item to set |
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* and in wait() command it is reading new items in this set. |
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* This driver doesn't use redis pubsub functionality, only redis sets. |
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* |
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* Managing connection to redis is up to you and you have to create it outsite |
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* of this class. You can use native Redis php extension or Predis extension. |
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* |
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* @see examples/redis |
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* |
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* @param Redis\Predis\Client $redis |
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* @param string $key |
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* @param integer $refreshInterval |
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* @param string $scheduleKey |
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*/ |
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public function __construct($redis, string $key = 'hermes', int $refreshInterval = 1, string $scheduleKey = 'hermes_schedule') |
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{ |
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if (!(($redis instanceof \Predis\Client) || ($redis instanceof \Redis))) { |
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throw new InvalidArgumentException('Predis\Client or Redis instance required'); |
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} |
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$this->key = $key; |
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$this->scheduleKey = $scheduleKey; |
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$this->redis = $redis; |
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$this->refreshInterval = $refreshInterval; |
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$this->serializer = new MessageSerializer(); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function send(MessageInterface $message): bool |
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{ |
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if ($message->getExecuteAt() && $message->getExecuteAt() > microtime(true)) { |
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$this->redis->zadd($this->scheduleKey, $message->getExecuteAt(), $this->serializer->serialize($message)); |
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} else { |
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$this->redis->sadd($this->key, $this->serializer->serialize($message)); |
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} |
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return true; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function wait(Closure $callback): void |
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{ |
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while (true) { |
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if (!$this->shouldProcessNext()) { |
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break; |
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} |
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// check schedule |
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$messagesString = []; |
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if ($this->redis instanceof \Predis\Client) { |
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$messagesString = $this->redis->zrangebyscore($this->scheduleKey, '-inf', microtime(true), 'LIMIT', 0, 1); |
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if (count($messagesString)) { |
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foreach ($messagesString as $messageString) { |
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$this->redis->zrem($this->scheduleKey, $messageString); |
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} |
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} |
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} |
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if ($this->redis instanceof \Redis) { |
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$messagesString = $this->redis->zRangeByScore($this->scheduleKey, '-inf', microtime(true), ['limit' => [0, 1]]); |
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if (count($messagesString)) { |
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foreach ($messagesString as $messageString) { |
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$this->redis->zRem($this->scheduleKey, $messageString); |
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} |
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} |
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} |
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if (count($messagesString)) { |
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foreach ($messagesString as $messageString) { |
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$this->send($this->serializer->unserialize($messageString)); |
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} |
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} |
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$messageString = false; |
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if ($this->redis instanceof \Predis\Client) { |
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$messageString = $this->redis->spop($this->key); |
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} |
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if ($this->redis instanceof \Redis) { |
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$messageString = $this->redis->sPop($this->key); |
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} |
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if (!$messageString) { |
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if ($this->refreshInterval) { |
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sleep($this->refreshInterval); |
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continue; |
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} |
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} |
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$callback($this->serializer->unserialize($messageString)); |
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$this->incrementProcessedItems(); |
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} |
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} |
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} |
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tomaj /
hermes
