Expose metrics in node.js function runtime

[kwiatekus]

Description

Nodejs (v16 and v18) functions should expose /metrics endpoint containing the following auto-instrumented metrics:

• histogram for function execution duration : function_duration_seconds
• total number of calls in total: function_calls_total
• total number of exceptions in total: function_failures_total

AC

• use OpenTelemtry SDK as a industry standard

Reasons
Our new Nodejs based runtimes no longer support the /metrics endpoint that was provided ootb by kubeless

Attachments

OTEL SDK for metrics

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[kyma-bot]

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/close

[kyma-bot]

@kyma-bot: Closing this issue.

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This issue or PR has been automatically closed due to the lack of activity.
Thank you for your contributions.

This bot triages issues and PRs according to the following rules:

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[kyma-bot]

This issue or PR has been automatically marked as stale due to the lack of recent activity.
Thank you for your contributions.

This bot triages issues and PRs according to the following rules:

• After 60d of inactivity, lifecycle/stale is applied
• After 7d of inactivity since lifecycle/stale was applied, the issue is closed

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/lifecycle stale