<?php
/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4 foldmethod=marker: */
// +---------------------------------------------------------------------------
// | SWAN [ $_SWANBR_SLOGAN_$ ]
// +---------------------------------------------------------------------------
// | Copyright $_SWANBR_COPYRIGHT_$
// +---------------------------------------------------------------------------
// | Version  $_SWANBR_VERSION_$
// +---------------------------------------------------------------------------
// | Licensed ( $_SWANBR_LICENSED_URL_$ )
// +---------------------------------------------------------------------------
// | $_SWANBR_WEB_DOMAIN_$
// +---------------------------------------------------------------------------

namespace Kafka;

use function Amp\run;

/**
 * +------------------------------------------------------------------------------
 * Kafka protocol since Kafka v0.8
 * +------------------------------------------------------------------------------
 *
 * @package
 * @version $_SWANBR_VERSION_$
 * @copyright Copyleft
 * @author $_SWANBR_AUTHOR_$
 * +------------------------------------------------------------------------------
 */
class Consumer
{
	use \Psr\Log\LoggerAwareTrait;
	use \Kafka\LoggerTrait;

	private $isRunning = false;


	/**
	 * __construct
	 *
	 * @access public
	 */
	public function __construct()
	{
	}

	/**
	 * start consumer
	 *
	 * @access public
	 * @param \Closure|null $consumer
	 * @param bool $isBlock
	 * @return void
	 */
	public function start(\Closure $consumer = null, $isBlock = true)
	{
		if ($this->isRunning) {
			$this->error('Has start consumer');
			return;
		}
		$process = new \Kafka\Consumer\Process($consumer);
		if ($this->logger) {
			$process->setLogger($this->logger);
		}
		$process->start();
		$this->isRunning = true;
		if ($isBlock) {
			run();
		}
	}
}