http server semconv 1.23 updates (#208)

* update http server span names to match spec ("GET" or "GET <route>"), per https://github.com/open-telemetry/semantic-conventions/blob/v1.23.0/docs/http/http-spans.md#name
* adding http client/server span attributes
* do not normalize hyphen to underscore for http request/response header key, per https://opentelemetry.io/blog/2023/http-conventions-declared-stable/#common-attributes-across-http-client-and-server-spans

Author: brettmc

src/HttpClientInstrumentation.php

@@ -36,7 +36,7 @@ public static function register(): void
                 /** @psalm-suppress ArgumentTypeCoercion */
                 $builder = $instrumentation
                     ->tracer()
-                    ->spanBuilder(\sprintf('HTTP %s', $params[0]))
+                    ->spanBuilder(\sprintf('%s', $params[0]))
                     ->setSpanKind(SpanKind::KIND_CLIENT)
                     ->setAttribute(TraceAttributes::URL_FULL, (string) $params[1])
                     ->setAttribute(TraceAttributes::HTTP_REQUEST_METHOD, $params[0])

src/SymfonyInstrumentation.php

@@ -40,7 +40,7 @@ public static function register(): void
                 /** @psalm-suppress ArgumentTypeCoercion */
                 $builder = $instrumentation
                     ->tracer()
-                    ->spanBuilder(\sprintf('HTTP %s', $request?->getMethod() ?? 'unknown'))
+                    ->spanBuilder(\sprintf('%s', $request?->getMethod() ?? 'unknown'))
                     ->setSpanKind(SpanKind::KIND_SERVER)
                     ->setAttribute(TraceAttributes::CODE_FUNCTION, $function)
                     ->setAttribute(TraceAttributes::CODE_NAMESPACE, $class)
@@ -56,6 +56,7 @@ public static function register(): void
                         ->setAttribute(TraceAttributes::HTTP_REQUEST_METHOD, $request->getMethod())
                         ->setAttribute(TraceAttributes::HTTP_REQUEST_BODY_SIZE, $request->headers->get('Content-Length'))
                         ->setAttribute(TraceAttributes::URL_SCHEME, $request->getScheme())
+                        ->setAttribute(TraceAttributes::URL_PATH, $request->getPathInfo())
                         ->startSpan();
                     $request->attributes->set(SpanInterface::class, $span);
                 } else {