1 files changed, 96 insertions, 0 deletions
diff --git a/vendor/open-telemetry/exporter-otlp/SpanExporterFactory.php b/vendor/open-telemetry/exporter-otlp/SpanExporterFactory.php
new file mode 100644
index 000000000..ce0550735
--- /dev/null
+++ b/vendor/open-telemetry/exporter-otlp/SpanExporterFactory.php
@@ -0,0 +1,96 @@
+<?php
+
+declare(strict_types=1);
+
+namespace OpenTelemetry\Contrib\Otlp;
+
+use OpenTelemetry\API\Behavior\LogsMessagesTrait;
+use OpenTelemetry\API\Signals;
+use OpenTelemetry\SDK\Common\Configuration\Configuration;
+use OpenTelemetry\SDK\Common\Configuration\Defaults;
+use OpenTelemetry\SDK\Common\Configuration\Variables;
+use OpenTelemetry\SDK\Common\Export\TransportFactoryInterface;
+use OpenTelemetry\SDK\Common\Export\TransportInterface;
+use OpenTelemetry\SDK\Registry;
+use OpenTelemetry\SDK\Trace\SpanExporter\SpanExporterFactoryInterface;
+use OpenTelemetry\SDK\Trace\SpanExporterInterface;
+
+class SpanExporterFactory implements SpanExporterFactoryInterface
+{
+    use LogsMessagesTrait;
+
+    private ?TransportFactoryInterface $transportFactory;
+
+    private const DEFAULT_COMPRESSION = 'none';
+
+    public function __construct(?TransportFactoryInterface $transportFactory = null)
+    {
+        $this->transportFactory = $transportFactory;
+    }
+
+    /**
+     * @psalm-suppress ArgumentTypeCoercion
+     */
+    public function create(): SpanExporterInterface
+    {
+        $transport = $this->buildTransport();
+
+        return new SpanExporter($transport);
+    }
+
+    /**
+     * @psalm-suppress ArgumentTypeCoercion
+     * @psalm-suppress UndefinedClass
+     */
+    private function buildTransport(): TransportInterface
+    {
+        $protocol = $this->getProtocol();
+        $contentType = Protocols::contentType($protocol);
+        $endpoint = $this->getEndpoint($protocol);
+        $headers = $this->getHeaders();
+        $compression = $this->getCompression();
+
+        $factoryClass = Registry::transportFactory($protocol);
+        $factory = $this->transportFactory ?: new $factoryClass();
+
+        return $factory->create($endpoint, $contentType, $headers, $compression);
+    }
+
+    private function getProtocol(): string
+    {
+        return Configuration::has(Variables::OTEL_EXPORTER_OTLP_TRACES_PROTOCOL) ?
+            Configuration::getEnum(Variables::OTEL_EXPORTER_OTLP_TRACES_PROTOCOL) :
+            Configuration::getEnum(Variables::OTEL_EXPORTER_OTLP_PROTOCOL);
+    }
+
+    private function getEndpoint(string $protocol): string
+    {
+        if (Configuration::has(Variables::OTEL_EXPORTER_OTLP_TRACES_ENDPOINT)) {
+            return Configuration::getString(Variables::OTEL_EXPORTER_OTLP_TRACES_ENDPOINT);
+        }
+        $endpoint = Configuration::has(Variables::OTEL_EXPORTER_OTLP_ENDPOINT)
+            ? Configuration::getString(Variables::OTEL_EXPORTER_OTLP_ENDPOINT)
+            : Defaults::OTEL_EXPORTER_OTLP_ENDPOINT;
+        if ($protocol === Protocols::GRPC) {
+            return $endpoint . OtlpUtil::method(Signals::TRACE);
+        }
+
+        return HttpEndpointResolver::create()->resolveToString($endpoint, Signals::TRACE);
+    }
+
+    private function getHeaders(): array
+    {
+        $headers = Configuration::has(Variables::OTEL_EXPORTER_OTLP_TRACES_HEADERS) ?
+            Configuration::getMap(Variables::OTEL_EXPORTER_OTLP_TRACES_HEADERS) :
+            Configuration::getMap(Variables::OTEL_EXPORTER_OTLP_HEADERS);
+
+        return $headers + OtlpUtil::getUserAgentHeader();
+    }
+
+    private function getCompression(): string
+    {
+        return Configuration::has(Variables::OTEL_EXPORTER_OTLP_TRACES_COMPRESSION) ?
+            Configuration::getEnum(Variables::OTEL_EXPORTER_OTLP_TRACES_COMPRESSION) :
+            Configuration::getEnum(Variables::OTEL_EXPORTER_OTLP_COMPRESSION, self::DEFAULT_COMPRESSION);
+    }
+}