MetricWriterInterface.php

<?php

declare (strict_types=1);
namespace OpenTelemetry\SDK\Metrics\MetricRegistry;

use Closure;
use OpenTelemetry\SDK\Metrics\Instrument;

/**
 * @internal
 */
interface MetricWriterInterface {
    public function record(Instrument $instrument, $value, iterable $attributes = [], $context = null) : void;
    public function registerCallback(Closure $callback, Instrument $instrument, Instrument ...$instruments) : int;
    public function unregisterCallback(int $callbackId) : void;
    public function enabled(Instrument $instrument) : bool;

}