MetricRegistryInterface.php

<?php

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

use OpenTelemetry\SDK\Metrics\Instrument;
use OpenTelemetry\SDK\Metrics\Stream\MetricAggregatorFactoryInterface;
use OpenTelemetry\SDK\Metrics\Stream\MetricAggregatorInterface;
use OpenTelemetry\SDK\Metrics\Stream\MetricStreamInterface;

/**
 * @internal
 */
interface MetricRegistryInterface extends MetricCollectorInterface {
    public function registerSynchronousStream(Instrument $instrument, MetricStreamInterface $stream, MetricAggregatorInterface $aggregator) : int;
    public function registerAsynchronousStream(Instrument $instrument, MetricStreamInterface $stream, MetricAggregatorFactoryInterface $aggregatorFactory) : int;
    public function unregisterStreams(Instrument $instrument) : array;

}