[Discover] Lens poc

[kertal]

Summary

This is an experimental PR integrating Lens in Discover to replace its histogram.

Checklist

Delete any items that are not applicable to this PR.

• Any text added follows EUI's writing guidelines, uses sentence case text and includes i18n support
• Documentation was added for features that require explanation or tutorials
• Unit or functional tests were updated or added to match the most common scenarios
• Any UI touched in this PR is usable by keyboard only (learn more about keyboard accessibility)
• Any UI touched in this PR does not create any new axe failures (run axe in browser: FF, Chrome)
• If a plugin configuration key changed, check if it needs to be allowlisted in the cloud and added to the docker list
• This renders correctly on smaller devices using a responsive layout. (You can test this in your browser)
• This was checked for cross-browser compatibility

Risk Matrix

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Before closing this PR, invite QA, stakeholders, and other developers to identify risks that should be tested prior to the change/feature release.

When forming the risk matrix, consider some of the following examples and how they may potentially impact the change:

Risk	Probability	Severity	Mitigation/Notes
Multiple Spaces—unexpected behavior in non-default Kibana Space.	Low	High	Integration tests will verify that all features are still supported in non-default Kibana Space and when user switches between spaces.
Multiple nodes—Elasticsearch polling might have race conditions when multiple Kibana nodes are polling for the same tasks.	High	Low	Tasks are idempotent, so executing them multiple times will not result in logical error, but will degrade performance. To test for this case we add plenty of unit tests around this logic and document manual testing procedure.
Code should gracefully handle cases when feature X or plugin Y are disabled.	Medium	High	Unit tests will verify that any feature flag or plugin combination still results in our service operational.
See more potential risk examples

For maintainers

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

[kibana-ci]

💔 Build Failed

• Buildkite Build
• Commit: 98035fd
• Interpreting CI Failures

Failed CI Steps

• Jest Tests #2
• Jest Tests #4
• x-pack/test/detection_engine_api_integration/security_and_spaces/group1/config.ts
• x-pack/test/detection_engine_api_integration/security_and_spaces/group1/config.ts
• FTR Configs #2
• FTR Configs #2
• FTR Configs #9
• FTR Configs #9
• FTR Configs #12
• FTR Configs #12
• FTR Configs #16
• FTR Configs #16
• FTR Configs #18
• FTR Configs #18
• FTR Configs #27
• FTR Configs #27
• FTR Configs #28
• FTR Configs #28
• FTR Configs #38
• FTR Configs #38
• Linting
• Checks
• Check Types

Test Failures

• [job] [logs] FTR Configs #9 / a11y tests using flights sample data Filter panel a11y test on enable all filters view
• [job] [logs] FTR Configs #27 / apis management index lifecycle management nodes list should return the list of ES node for each custom attributes
• [job] [logs] FTR Configs #27 / apis management index lifecycle management nodes list should return the list of ES node for each custom attributes
• [job] [logs] FTR Configs #9 / cases security and spaces enabled: basic Common assignees assigns a user to a case and retrieves the users profile
• [job] [logs] FTR Configs #9 / cases security and spaces enabled: basic Common assignees assigns a user to a case and retrieves the users profile
• [job] [logs] x-pack/test/detection_engine_api_integration/security_and_spaces/group1/config.ts / detection engine api security and spaces enabled - Group 1 Tests involving runtime fields of source indexes and the signals index "before all" hook in "Tests involving runtime fields of source indexes and the signals index"
• [job] [logs] x-pack/test/detection_engine_api_integration/security_and_spaces/group1/config.ts / detection engine api security and spaces enabled - Group 1 Tests involving runtime fields of source indexes and the signals index "before all" hook in "Tests involving runtime fields of source indexes and the signals index"
• [job] [logs] FTR Configs #2 / Discover alerting Search source Alert should navigate to discover via view in app link
• [job] [logs] FTR Configs #2 / Discover alerting Search source Alert should navigate to discover via view in app link
• [job] [logs] FTR Configs #28 / discover app indexpattern without timefield should adapt sidebar fields when switching
• [job] [logs] FTR Configs #28 / discover app indexpattern without timefield should switch between with and without timefield using the browser back button
• [job] [logs] Jest Tests #4 / Discover chart render with timefield with visualize permissions
• [job] [logs] Jest Tests #4 / Discover chart render with timefield without visualize permissions
• [job] [logs] Jest Tests #4 / Discover chart triggers ui action on click
• [job] [logs] Jest Tests #4 / Discover component selected data view with time field displays chart toggle
• [job] [logs] Jest Tests #4 / Discover component sidebar should be closed if discover:sidebarClosed is true
• [job] [logs] Jest Tests #4 / Discover component sidebar should be opened if discover:sidebarClosed is false
• [job] [logs] Jest Tests #4 / Discover component sidebar should be opened if discover:sidebarClosed was not set
• [job] [logs] Jest Tests #4 / Discover component the saved search title h1 gains focus on navigate
• [job] [logs] FTR Configs #18 / discover discover field visualize button should preserve query in lens
• [job] [logs] FTR Configs #18 / discover Discover Saved Searches should unselect saved search when navigating to a 'new'
• [job] [logs] FTR Configs #12 / discover/group1 discover test query should modify the time range when the histogram is brushed
• [job] [logs] FTR Configs #12 / discover/group1 discover test query should modify the time range when the histogram is brushed
• [job] [logs] Jest Tests #2 / embeddable should call onload after rerender and onData$ call
• [job] [logs] Jest Tests #4 / Histogram renders correctly
• [job] [logs] Jest Tests #4 / Histogram renders error correctly
• [job] [logs] Jest Tests #4 / Histogram renders loading state correctly
• [job] [logs] FTR Configs #16 / lens app - group 2 show underlying data should show the open button for a compatible saved visualization
• [job] [logs] FTR Configs #16 / lens app - group 2 show underlying data should show the open button for a compatible saved visualization
• [job] [logs] Jest Tests #2 / open in discover action compatibility check is incompatible if user cant access Discover app
• [job] [logs] Jest Tests #2 / open in discover action navigates to discover when executed
• [job] [logs] FTR Configs #38 / security APIs - PKI PKI authentication should reject API requests that use untrusted certificate
• [job] [logs] FTR Configs #38 / security APIs - PKI PKI authentication should reject API requests that use untrusted certificate

Metrics [docs]

Module Count

Fewer modules leads to a faster build time

id	before	after	diff
discover	555	548	-7
savedSearch	-	11	+11
total			+4

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
discover	68	73	+5
savedSearch	-	39	+39
total			+44

Async chunks

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

id	before	after	diff
discover	463.3KB	463.3KB	-6.0B
lens	1.2MB	1.2MB	-9.8KB
total			-9.8KB

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
discover	7	5	-2
savedSearch	-	1	+1
total			-1

Page load bundle

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

id	before	after	diff
discover	29.1KB	25.4KB	-3.6KB
lens	34.3KB	33.2KB	-1.1KB
savedSearch	-	4.7KB	+4.7KB
visualizations	46.8KB	46.8KB	+3.0B
total			+34.0B

Unknown metric groups

API count

id	before	after	diff
discover	84	89	+5
savedSearch	-	39	+39
total			+44

async chunk count

id	before	after	diff
lens	14	13	-1

ESLint disabled in files

id	before	after	diff
apm	14	13	-1
discover	2	1	-1
observability	6	5	-1
savedSearch	-	1	+1
total			-2

ESLint disabled line counts

id	before	after	diff
apm	81	78	-3
discover	37	38	+1
enterpriseSearch	13	11	-2
observability	44	43	-1
synthetics	57	51	-6
ux	10	9	-1
total			-12

Total ESLint disabled count

id	before	after	diff
apm	95	91	-4
enterpriseSearch	13	11	-2
observability	50	48	-2
savedSearch	-	1	+1
synthetics	63	57	-6
ux	13	12	-1
total			-14

History

• 💔 Build #64470 failed 98035fd

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

cc @kertal

[kertal]

closing, since no longer relevant