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<?php
declare(strict_types=1);
namespace OpenTelemetry\SDK\Trace;
use InvalidArgumentException;
use OpenTelemetry\SDK\Common\Configuration\Configuration;
use OpenTelemetry\SDK\Common\Configuration\Variables;
use OpenTelemetry\SDK\Registry;
use RuntimeException;
class ExporterFactory
{
/**
* @throws RuntimeException
*/
public function create(): ?SpanExporterInterface
{
$exporters = Configuration::getList(Variables::OTEL_TRACES_EXPORTER);
if (1 !== count($exporters)) {
throw new InvalidArgumentException(sprintf('Configuration %s requires exactly 1 exporter', Variables::OTEL_TRACES_EXPORTER));
}
$exporter = $exporters[0];
if ($exporter === 'none') {
return null;
}
$factory = Registry::spanExporterFactory($exporter);
return $factory->create();
}
}
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