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<?php
/**
* Spiral Framework.
*
* @license MIT
* @author Anton Titov (Wolfy-J)
*/
declare(strict_types=1);
namespace Spiral\RoadRunner;
use Spiral\RoadRunner\Exception\MetricException;
interface MetricsInterface
{
/**
* Add collector value. Fallback to appropriate method of related collector.
*
* @param string $collector
* @param float $value
* @param mixed[] $labels
*
* @throws MetricException
* @return void
*/
public function add(string $collector, float $value, array $labels = []);
/**
* Subtract the collector value, only for gauge collector.
*
* @param string $collector
* @param float $value
* @param mixed[] $labels
*
* @throws MetricException
* @return void
*/
public function sub(string $collector, float $value, array $labels = []);
/**
* Observe collector value, only for histogram and summary collectors.
*
* @param string $collector
* @param float $value
* @param mixed[] $labels
*
* @throws MetricException
* @return void
*/
public function observe(string $collector, float $value, array $labels = []);
/**
* Set collector value, only for gauge collector.
*
* @param string $collector
* @param float $value
* @param mixed[] $labels
*
* @throws MetricException
* @return void
*/
public function set(string $collector, float $value, array $labels = []);
}
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