[Telemetry] Swallow errors in opt-in remote notification from the server

[afharo]

Summary

This PR catches any errors when the server tries to notify the remote telemetry service about Opt-In/Opt-Out events but it can't reach it for whatever reason.

We are not awaiting the promise anymore to avoid timing out the Kibana request when the connection to the remote service times out.

Fixes #75637

For maintainers

• This was checked for breaking API changes and was labeled appropriately

[elasticmachine]

Pinging @elastic/kibana-telemetry (Team:KibanaTelemetry)

[TinaHeiligers]

Can we log these somewhere to track how many times we encounter them? I'd prefer us knowing about their frequency rather than blinding swallowing them.

[afharo]

@TinaHeiligers fair point! I've added the log entry.

I've tested it by setting telemetry.optInStatusUrl: https://localhost in the file kibana.yml (to make sure it fails to connect) and I can see this log entry:

server    log   [09:48:40.436] [warning][plugins][telemetry] Failed to notify "https://localhost" from the server about the opt-in selection. Possibly blocked by a firewall? - Error: request to https://localhost failed, reason: connect ECONNREFUSED 127.0.0.1:443

[kibanamachine]

💚 Build Succeeded

• continuous-integration/kibana-ci/pull-request
• Commit: 0bc6b96

Build metrics

✅ unchanged

History

• 💚 Build #69649 succeeded 5d153ae

To update your PR or re-run it, just comment with:
@elasticmachine merge upstream

[TinaHeiligers]

LGTM

[elasticmachine]

Pinging @elastic/kibana-core (Team:Core)