Allow sorting by median

[flash1293]

Fixes #79836

This PR makes it possible to sort by median by prefixing the bucket path in the terms agg with .50. This is necessary because median uses percentiles under the hood which is a multi metric, so it's necessary to point to the specific value within the multi metric.

To handle this, I introduced a new property getValueBucketPath on the agg config which is passed in from the agg type. The default implementation just takes the id, for the median type it's implemented by adding the .50 suffix.

[elasticmachine]

Pinging @elastic/kibana-app (Team:KibanaApp)

[elasticmachine]

Pinging @elastic/kibana-app-arch (Team:AppArch)

[wylieconlon]

Tested and LGTM!

[flash1293]

@elasticmachine merge upstream

[flash1293]

@elasticmachine merge upstream

[lukeelmers]

I think the implementation here makes sense, but would be great if we could add a few unit tests, perhaps on terms agg and/or median agg type.

Tested Chrome (macOS), looks good!

[kibanamachine]

💚 Build Succeeded

• continuous-integration/kibana-ci/pull-request
• Commit: 0cda119

Metrics [docs]

page load bundle size

id	before	after	diff
data	1.1MB	1.1MB	+339.0B

History

• 💚 Build #81253 succeeded 22ea278
• 💛 Build #80999 was flaky 0fceaab
• 💚 Build #80476 succeeded d53c0ff
• 💔 Build #80458 failed 10e8338
• 💔 Build #80453 failed f0417f9

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@elasticmachine merge upstream