Add agent self-observability

[CodePrometheus]

[wu-sheng]

FYI, we plan to release 10.2 in two weeks, waiting for the banyandb 0.8 ready. So, if you want 10.2 including this, let me know.

[mrproliu]

Do we have ability to disabled the so11y? If user wants more good performance, they can disable it.

[CodePrometheus]

Do we have ability to disabled the so11y? If user wants more good performance, they can disable it.

Perhaps we can add a global switch to control whether the agent reports metrics, or just control so11y this time? If we want to control so11y, should we completely ban so11y-related collection?

[wu-sheng]

Is Java agent providing this disable feature?

[CodePrometheus]

Is Java agent providing this disable feature?

No, javaagent only uses Config.Meter.ACTIVE to control whether metrics are reported to the OAP, but the collection process continues to run.

[wu-sheng]

Then I think we should be good for now. @mrproliu Is there any code impacting the performance/throughput significantly?

[mrproliu]

Then I think we should be good for now. @mrproliu Is there any code impacting the performance/throughput significantly?

Currently, the main finding is that some of the data may be inaccurate (asynchronous registration), but this can be fixed at the code level.

[mrproliu]

After update the multi go version check in plugin test, its looks good to me.

[wu-sheng]

@CodePrometheus When you submit PR for the backend, please make sure e2e added and document 0.6 go-agent required.

[CodePrometheus]

@CodePrometheus When you submit PR for the backend, please make sure e2e added and document 0.6 go-agent required.

OK, I'll submit it in the coming days.