Update or deprecate Datadog tracer

[moderation]

Title: Update or deprecate Datadog tracer

Description:
The current Datadog tracer is at version 1.2.1 (link) while the latest version is at 1.3.2 (link). OpenTracing is deprecated in favor of OpenTelemetry.

Do we upgrade the Envoy Proxy integration or remove the extension based on deprecation of underlying projects?

Relevant Links:
https://datadoghq.slack.com/archives/C3ZGCF88Z/p1651209631831539

[wbpcode]

cc @cgilmour

[phlax]

related #18476

[alyssawilk]

cc @cgilmour @palazzem

[cgilmour]

Thanks for cc-ing me on this. Yup, the version of the datadog tracer hasn't been updated in a while, mostly because of a switch to opentracing v1.6.x, whereas envoy is using opentracing v1.5.x. We didn't want to introduce a disruptive change in envoy.

I suspect updating the version of opentracing isn't a viable approach for a few reasons:

• it's deprecated
• an opentelemetry tracer is being worked on
• it forces the continued use of outdated dependencies, including the datadog tracer's use of msgpack

It's an important integration for us in its direct use in envoy and indirect use in service meshes like istio and appmesh. And as always, we're happy to put in the work to keep this feature as an option for our users.

So, let us know what approach you'd prefer moving forward and we can start making changes to achieve that.
Thanks!

[moderation]

Thanks for the update @cgilmour . When #20281 is merged, will that replace the need for the existing DD tracer allowing us to deprecate / remove it? Or do you think you'll need a DD specific Otel tracer? From the blogs and docs at https://www.datadoghq.com/search/?s=opentelemetry it looks like a vanilla Otel tracer will work

[github-actions]

This issue has been automatically marked as stale because it has not had activity in the last 30 days. It will be closed in the next 7 days unless it is tagged "help wanted" or "no stalebot" or other activity occurs. Thank you for your contributions.

[moderation]

not stale

[github-actions]

This issue has been automatically marked as stale because it has not had activity in the last 30 days. It will be closed in the next 7 days unless it is tagged "help wanted" or "no stalebot" or other activity occurs. Thank you for your contributions.

[github-actions]

This issue has been automatically closed because it has not had activity in the last 37 days. If this issue is still valid, please ping a maintainer and ask them to label it as "help wanted" or "no stalebot". Thank you for your contributions.