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<?php
declare(strict_types=1);
namespace OpenTelemetry\API;
use function assert;
use Closure;
use const E_USER_WARNING;
use OpenTelemetry\API\Instrumentation\Configurator;
use OpenTelemetry\API\Instrumentation\ContextKeys;
use OpenTelemetry\API\Logs\LoggerProviderInterface;
use OpenTelemetry\API\Metrics\MeterProviderInterface;
use OpenTelemetry\API\Trace\TracerProviderInterface;
use OpenTelemetry\Context\Context;
use OpenTelemetry\Context\Propagation\TextMapPropagatorInterface;
use function sprintf;
use Throwable;
use function trigger_error;
/**
* Provides access to the globally configured instrumentation instances.
*/
final class Globals
{
/** @var Closure[] */
private static array $initializers = [];
private static ?self $globals = null;
private TracerProviderInterface $tracerProvider;
private MeterProviderInterface $meterProvider;
private TextMapPropagatorInterface $propagator;
private LoggerProviderInterface $loggerProvider;
public function __construct(
TracerProviderInterface $tracerProvider,
MeterProviderInterface $meterProvider,
LoggerProviderInterface $loggerProvider,
TextMapPropagatorInterface $propagator
) {
$this->tracerProvider = $tracerProvider;
$this->meterProvider = $meterProvider;
$this->loggerProvider = $loggerProvider;
$this->propagator = $propagator;
}
public static function tracerProvider(): TracerProviderInterface
{
return Context::getCurrent()->get(ContextKeys::tracerProvider()) ?? self::globals()->tracerProvider;
}
public static function meterProvider(): MeterProviderInterface
{
return Context::getCurrent()->get(ContextKeys::meterProvider()) ?? self::globals()->meterProvider;
}
public static function propagator(): TextMapPropagatorInterface
{
return Context::getCurrent()->get(ContextKeys::propagator()) ?? self::globals()->propagator;
}
public static function loggerProvider(): LoggerProviderInterface
{
return Context::getCurrent()->get(ContextKeys::loggerProvider()) ?? self::globals()->loggerProvider;
}
/**
* @param Closure(Configurator): Configurator $initializer
*
* @interal
* @psalm-internal OpenTelemetry
*/
public static function registerInitializer(Closure $initializer): void
{
self::$initializers[] = $initializer;
}
/**
* @phan-suppress PhanTypeMismatchReturnNullable
*/
private static function globals(): self
{
if (self::$globals !== null) {
return self::$globals;
}
$configurator = Configurator::createNoop();
$scope = $configurator->activate();
try {
foreach (self::$initializers as $initializer) {
try {
$configurator = $initializer($configurator);
} catch (Throwable $e) {
trigger_error(sprintf("Error during opentelemetry initialization: %s\n%s", $e->getMessage(), $e->getTraceAsString()), E_USER_WARNING);
}
}
} finally {
$scope->detach();
}
$context = $configurator->storeInContext();
$tracerProvider = $context->get(ContextKeys::tracerProvider());
$meterProvider = $context->get(ContextKeys::meterProvider());
$propagator = $context->get(ContextKeys::propagator());
$loggerProvider = $context->get(ContextKeys::loggerProvider());
assert(isset($tracerProvider, $meterProvider, $loggerProvider, $propagator));
return self::$globals = new self($tracerProvider, $meterProvider, $loggerProvider, $propagator);
}
/**
* @internal
*/
public static function reset(): void
{
self::$globals = null;
self::$initializers = [];
}
}
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