/**
* Fetches a channel object identified by the numeric channel_id, or
* create that object if it doesn't already exist.
*
* @param int $channel_id
* @return AMQPChannel
*/
public function channel(int $channel_id = null)
{
// garbage collect channels
foreach ($this->channels as $i => $channel) {
if ($channel->isClosed()) {
unset($this->channels[$i]);
}
}
//
if (isset($this->channels[$channel_id])) {
(yield $this->channels[$channel_id]);
} else {
$channel_id = $channel_id ? $channel_id : $this->getFreeChannelID();
$ch = new AMQPChannel($this, $channel_id);
$this->channels[$channel_id] = $ch;
(yield $ch->open());
(yield $ch);
}
}
