OpenTelemetry distributed tracing not working for Elastic APM

Fixed, please review

Looks good, but maybe we need to set the span kind not only for the root and request spans, but for all children spans too? If so, maybe it's good to create a wrapper that creates spans with the required spans.

And maybe it's possible to configure the default span kind via ENV variables or any other way, to not set it explicitly on each new span?

Unfortunately SDK doesn't provide any ENV variable for SpanKind. By default span uses INTERNAL spankind.
see https://github.com/opentelemetry-php/sdk/blob/main/Trace/SpanBuilder.php...

I have added KIND_CLIENT for database span and KIND_SERVER for span of config form.
For exception span we can use default KIND_INTERNAL

Available SpanKinds:
https://opentelemetry.io/docs/specs/otel/trace/api/#spankind

Replaced deprecated trace attributes
see https://github.com/opentelemetry-php/sem-conv/blob/1.24.0/TraceAttribute...

Regarding the documentation, seems the root span should be with SpanKind=KIND_INTERNAL, cuz it covers the Drupal kernel initialization and finalization, so we need to set SpanKind=KIND_SERVER only for the Request span. @gaurav, what do you think?

i'l check and update if needed.

We can set internal for root span, il update MR

Now looks good, merged. Thanks!

Great, thanks

Automatically closed - issue fixed for 2 weeks with no activity.