[Log Explorer] Convert log explorer profile into standalone app

[weltenwort]

📝 Summary

This converts the log explorer profile into a stand-alone log explorer component and an observability log explorer app, that uses it.

closes #164197

Release note

The Observability Log Explorer App is made available as a preview in the Observability solution navigation. It offers the usability of Discover, but is optimized for viewing log entries from log data streams.

🛠️ Implementation notes

• This renames the discover_log_explorer plugin into log_explorer.
• Instead of registering a discover profile, log_explorer now exports a component that renders the DiscoverContainer with the previously implemented customizations. This is where integration-level customization will go in the future. For observability-specific customizations this component will have to become a lot more configurable.
• The new plugin observability_log_explorer registers a log explorer application, which renders the aforementioned log explorer component. This is where observability-specific customizations will go in the future.
• The functional tests for both stateful and serverless were renamed and adapted accordingly.
• The functional tests use discover page objects in many places, which is sensible because components are identical. The test utilities for this identical UX should probably be factored out into smaller, specialized page objects as the componentization of Discover progresses.
• The name that the app is labelled with in the UI is still being discussed.
• The search session feature is left in an uninitialized state because this injects a proxy of the search session service, which ignores the enablement call.

🎨 Previews

Stateful /app/observability-log-explorer

Stateless /app/observability-log-explorer

[apmmachine]

🤖 GitHub comments

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Just comment with:

• /oblt-deploy : Deploy a Kibana instance using the Observability test environments.
• /oblt-deploy-serverless : Deploy a serverless Kibana instance using the Observability test environments.
• run elasticsearch-ci/docs : Re-trigger the docs validation. (use unformatted text in the comment!)

[elasticmachine]

Pinging @elastic/infra-monitoring-ui (Team:Infra Monitoring UI)

[jeramysoucy]

Changes in test/plugin_functional/test_suites/core_plugins/rendering.ts LGTM. Just one minor nit/ask.

[jeramysoucy]

@weltenwort Could you add a short comment to explain the any type? I know we don't have them for all of the any-typed items here, but we're trying to be better about this.

[jbudz]

limits.yml, storybook aliases lgtm

[tonyghiani]

The latest changes LGTM and the features still work correctly, thanks for this work 👏

[pheyos]

x-pack/test_serverless/functional/config.base.ts changes LGTM

[kibana-ci]

💚 Build Succeeded

• Buildkite Build
• Commit: b97c53d
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Metrics [docs]

Module Count

Fewer modules leads to a faster build time

id	before	after	diff
discoverLogExplorer	317	-	-317
logExplorer	-	319	+319
observabilityLogExplorer	-	32	+32
total			+34

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
logExplorer	-	3	+3

Async chunks

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

id	before	after	diff
discoverLogExplorer	221.1KB	-	-221.1KB
logExplorer	-	220.7KB	⚠️ +220.7KB
total			-354.0B

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
logExplorer	-	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
discoverLogExplorer	5.9KB	-	-5.9KB
infra	105.8KB	105.9KB	+78.0B
logExplorer	-	5.5KB	+5.5KB
observabilityLogExplorer	-	8.7KB	+8.7KB
serverlessObservability	44.1KB	44.2KB	+12.0B
total			+8.3KB

Unknown metric groups

API count

id	before	after	diff
logExplorer	-	3	+3

async chunk count

id	before	after	diff
discoverLogExplorer	8	-	-8
logExplorer	-	8	+8
total			-0

ESLint disabled in files

id	before	after	diff
discoverLogExplorer	2	-	-2
logExplorer	-	2	+2
total			-0

ESLint disabled line counts

id	before	after	diff
discoverLogExplorer	4	-	-4
logExplorer	-	6	+6
observabilityLogExplorer	-	2	+2
total			+4

Total ESLint disabled count

id	before	after	diff
discoverLogExplorer	6	-	-6
logExplorer	-	8	+8
observabilityLogExplorer	-	2	+2
total			+4

History

• 💚 Build #154790 succeeded d8e572c
• 💛 Build #154617 was flaky 9906a21
• 💔 Build #154614 failed 7cf2129
• 💔 Build #154472 failed 6a5c8d4
• 💔 Build #154155 failed 5d07c88
• 💔 Build #154118 failed a321268

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@elasticmachine merge upstream

cc @weltenwort