NoopMeterProvider.php

<?php

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

use OpenTelemetry\API\Metrics\MeterInterface;
use OpenTelemetry\API\Metrics\Noop\NoopMeter;
use OpenTelemetry\SDK\Common\InstrumentationScope\Configurator;
class NoopMeterProvider implements MeterProviderInterface {
    public function shutdown() : bool {
        return true;
    }
    public function forceFlush() : bool {
        return true;
    }
    public function getMeter(string $name, ?string $version = null, ?string $schemaUrl = null, iterable $attributes = []) : MeterInterface {
        return new NoopMeter();
    }
    public function updateConfigurator(Configurator $configurator) : void {
        // no-op
    }

}