1 files changed, 76 insertions, 0 deletions
diff --git a/vendor/open-telemetry/sdk/SdkAutoloader.php b/vendor/open-telemetry/sdk/SdkAutoloader.php
new file mode 100644
index 000000000..c08195e19
--- /dev/null
+++ b/vendor/open-telemetry/sdk/SdkAutoloader.php
@@ -0,0 +1,76 @@
+<?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;
+    }
+}