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<?php
declare(strict_types=1);
namespace OpenTelemetry\SDK;
use InvalidArgumentException;
use OpenTelemetry\API\Globals;
use OpenTelemetry\API\Instrumentation\Configurator;
use OpenTelemetry\SDK\Common\Configuration\Configuration;
use OpenTelemetry\SDK\Common\Configuration\Variables;
use OpenTelemetry\SDK\Common\Util\ShutdownHandler;
use OpenTelemetry\SDK\Logs\LoggerProviderFactory;
use OpenTelemetry\SDK\Metrics\MeterProviderFactory;
use OpenTelemetry\SDK\Propagation\PropagatorFactory;
use OpenTelemetry\SDK\Trace\ExporterFactory;
use OpenTelemetry\SDK\Trace\SamplerFactory;
use OpenTelemetry\SDK\Trace\SpanProcessorFactory;
use OpenTelemetry\SDK\Trace\TracerProviderBuilder;
class SdkAutoloader
{
private static ?bool $enabled = null;
public static function autoload(): bool
{
try {
self::$enabled ??= Configuration::getBoolean(Variables::OTEL_PHP_AUTOLOAD_ENABLED);
} catch (InvalidArgumentException $e) {
//invalid setting, assume false
self::$enabled = false;
}
if (!self::$enabled) {
return false;
}
Globals::registerInitializer(function (Configurator $configurator) {
$propagator = (new PropagatorFactory())->create();
if (Sdk::isDisabled()) {
//@see https://github.com/open-telemetry/opentelemetry-specification/blob/main/specification/configuration/sdk-environment-variables.md#general-sdk-configuration
return $configurator->withPropagator($propagator);
}
$emitMetrics = Configuration::getBoolean(Variables::OTEL_PHP_INTERNAL_METRICS_ENABLED);
$exporter = (new ExporterFactory())->create();
$meterProvider = (new MeterProviderFactory())->create();
$spanProcessor = (new SpanProcessorFactory())->create($exporter, $emitMetrics ? $meterProvider : null);
$tracerProvider = (new TracerProviderBuilder())
->addSpanProcessor($spanProcessor)
->setSampler((new SamplerFactory())->create())
->build();
$loggerProvider = (new LoggerProviderFactory())->create($emitMetrics ? $meterProvider : null);
ShutdownHandler::register([$tracerProvider, 'shutdown']);
ShutdownHandler::register([$meterProvider, 'shutdown']);
ShutdownHandler::register([$loggerProvider, 'shutdown']);
return $configurator
->withTracerProvider($tracerProvider)
->withMeterProvider($meterProvider)
->withLoggerProvider($loggerProvider)
->withPropagator($propagator)
;
});
return true;
}
/**
* @internal
*/
public static function reset(): void
{
self::$enabled = null;
}
}
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