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<?php declare(strict_types=1); namespace OpenTelemetry\API\Instrumentation; use OpenTelemetry\API\Logs\LoggerProviderInterface; use OpenTelemetry\API\Metrics\MeterProviderInterface; use OpenTelemetry\API\Trace\TracerProviderInterface; use OpenTelemetry\Context\Context; use OpenTelemetry\Context\ContextKeyInterface; use OpenTelemetry\Context\Propagation\TextMapPropagatorInterface; /** * @internal */ final class ContextKeys { /** * @return ContextKeyInterface<TracerProviderInterface> */ public static function tracerProvider(): ContextKeyInterface { static $instance; return $instance ??= Context::createKey(TracerProviderInterface::class); } /** * @return ContextKeyInterface<MeterProviderInterface> */ public static function meterProvider(): ContextKeyInterface { static $instance; return $instance ??= Context::createKey(MeterProviderInterface::class); } /** * @return ContextKeyInterface<TextMapPropagatorInterface> */ public static function propagator(): ContextKeyInterface { static $instance; return $instance ??= Context::createKey(TextMapPropagatorInterface::class); } /** * @return ContextKeyInterface<LoggerProviderInterface> */ public static function loggerProvider(): ContextKeyInterface { static $instance; return $instance ??= Context::createKey(LoggerProviderInterface::class); } }
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