Otel: set db.operation.name and db.system.name at span build time (#1091) (#1092)

* set db.operation.name and db.system.name at span build time

* clean

Co-authored-by: Laura Trotta <153528055+l-trotta@users.noreply.github.com>

Author: github-actions[bot]

java-client/src/main/java/co/elastic/clients/transport/instrumentation/OpenTelemetryForElasticsearch.java

@@ -185,10 +185,13 @@ <TRequest> OTelContext(TRequest request, Endpoint<TRequest, ?, ?> endpoint) {
                 }
                 this.endpointId = endpointId;
 
-                span = tracer.spanBuilder(endpointId).setSpanKind(SpanKind.CLIENT).startSpan();
+                span = tracer.spanBuilder(endpointId).setSpanKind(SpanKind.CLIENT)
+                    .setAttribute(ATTR_DB_SYSTEM, "elasticsearch")
+                    .setAttribute(ATTR_DB_OPERATION, endpointId)
+                    .startSpan();
+
                 if (span.isRecording()) {
-                    span.setAttribute(ATTR_DB_SYSTEM, "elasticsearch");
-                    span.setAttribute(ATTR_DB_OPERATION, endpointId);
+
                     span.setAttribute(ATTR_HTTP_REQUEST_METHOD, endpoint.method(request));
 
                     for (Map.Entry<String, String> pathParamEntry : endpoint.pathParameters(request).entrySet()) {