[Security Solutions] Removes POC transforms

[FrankHassanabad]

Summary

Removes the metrics_entities plugin and POC. As a different direction will be taken and people can look back at the git history for it as they see fit if they need to refer to it. Once it's re-added it it will be through an RFC process and re-discussed.

Earlier PR's which added the POC:

#96446
#104559

Checklist

• Unit or functional tests were updated or added to match the most common scenarios

[dhurley14]

I probably have not been involved in some conversations but I'm wondering why not just amend the code as we flesh out features for this rather than pull it all out now? Is there detriment in keeping it in the code base for now? If there have been conversations around just re-building from the ground up and this is the approach I think that is fair but I was just wondering if there are any discussions I missed around pulling this out of the codebase now?

[FrankHassanabad]

@dhurley14, It's been in the codebase for almost a year with no traction. Since I'm departing, I don't think I should leave behind code that would be difficult for another engineer to remove at this point vs. the other way which is an engineer can re-invent the code or copy the code back if need be.

This feature requires a RFC and probably a re-think and renewed ownership. The code can be found in the git history if needed. It would de-activate in several instances and is hard to explain to people how metrics and entities work generally. Looking at our roadmap this performance improvement honestly doesn't look like it is ever going to be a priority vs. other features? I'm just pointing out that maybe the business is ok with the performance of the application as it is today. If this is not going to be a priority for another year or ever and probably never worked on again why keep it in the codebase was my thinking.

I mean, at this point it's up to you, @yctercero, and @peluja1012 if you want to keep it in here or not.

[FrankHassanabad]

@elasticmachine merge upstream

[kibana-ci]

💚 Build Succeeded

• Buildkite Build
• Commit: d50cbae
• Storybooks Preview
• Webpack Bundle Analyzer

Metrics [docs]

Module Count

Fewer modules leads to a faster build time

id	before	after	diff
securitySolution	2782	2765	-17

Public APIs missing comments

Total count of every public API that lacks a comment. Target amount is 0. Run node scripts/build_api_docs --plugin [yourplugin] --stats comments for more detailed information.

id	before	after	diff
metricsEntities	4	-	-4

Async chunks

Total size of all lazy-loaded chunks that will be downloaded as the user navigates the app

id	before	after	diff
securitySolution	4.8MB	4.8MB	-8.2KB

Public APIs missing exports

Total count of every type that is part of your API that should be exported but is not. This will cause broken links in the API documentation system. Target amount is 0. Run node scripts/build_api_docs --plugin [yourplugin] --stats exports for more detailed information.

id	before	after	diff
metricsEntities	1	-	-1

Page load bundle

Size of the bundles that are downloaded on every page load. Target size is below 100kb

id	before	after	diff
securitySolution	251.8KB	250.3KB	-1.4KB

Unknown metric groups

API count

id	before	after	diff
metricsEntities	4	-	-4

ESLint disabled line counts

id	before	after	diff
metricsEntities	1	-	-1
securitySolution	446	445	-1
total			-2

Total ESLint disabled count

id	before	after	diff
metricsEntities	1	-	-1
securitySolution	515	514	-1
total			-2

History

• 💔 Build #37286 failed ce48502
• 💛 Build #36870 was flaky fc80a18
• 💚 Build #36675 succeeded 6bb8142

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

cc @FrankHassanabad

[dhurley14]

Discussed with everyone and agreed on general direction of relying on git history when the time comes to implementing metrics entities etc. LGTM.

[elasticmachine]

Pinging @elastic/security-solution (Team: SecuritySolution)