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QueueMiddleware.php
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73 lines (62 loc) · 1.53 KB
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<?php
namespace Equip\Queue;
use Exception;
use League\Tactician\Middleware;
class QueueMiddleware implements Middleware
{
/**
* @var Queue
*/
private $queue;
/**
* @var array
*/
private $queue_map;
/**
* @param Queue $queue
* @param array $queue_map
*/
public function __construct(Queue $queue, array $queue_map = [])
{
$this->queue = $queue;
$this->queue_map = $queue_map;
}
/**
* @inheritdoc
*/
public function execute($command, callable $next)
{
if ($command instanceof QueueableCommand) {
$queue = $this->getQueue(get_class($command));
return $this->queue->add(
$queue,
// Wraps the command so it isn't requeued
new QueuedCommand($command)
);
}
if ($command instanceof QueuedCommand) {
$command = $command->command();
}
return $next($command);
}
/**
* Gets the specific queue for the command
*
* @param string $command_name
*
* @return string
*
* @throws \Exception If the command isn't assigned to a pipe
*/
private function getQueue($command_name)
{
foreach ($this->queue_map as $queue => $commands) {
if (in_array($command_name, $commands)) {
return $queue;
}
}
throw new Exception(
sprintf('No queue has been set for the `%s` command', $command_name)
);
}
}