[Maps] Add table source for choropleth mapping

[thomasneirynck]

Summary

This adds a new source TABLE_SOURCE that can be used in descriptors to inject custom tabular data to use in a term join.

Intended for users of the MapsEmbeddable, so they can do choropleth mapping with custom data (e.g. mash up an EMS layer with a custom table).

This is a follow-on to the ML work here: #88416. It would allow ML to map anomalies by state/country.

Example:

const choroplethLayer = {
  joins: [
    {
      leftField: 'iso2',
      right: {
        id: 'foobar',
        type: SOURCE_TYPES.TABLE_SOURCE,
        __rows: 
          [
            {
             population: 300000000,
             iso2_right: 'US'
            },
           {
           population: 1000000000,
           iso2_right: 'CN'
          }
        ],
        __columns: [
          {
            name: 'iso2_right',
            type: 'string',
          },
          {
            name: 'population',
            type: 'number',
          },
        ],
        term: 'iso2_right',
        metrics: [],
      },
    },
  ],
  sourceDescriptor: {
    type: 'EMS_FILE',
    id: 'world_countries',
  },
  style: {
    type: 'VECTOR',
    properties: {
      icon: { type: STYLE_TYPE.STATIC, options: { value: 'marker' } },
      fillColor: {
        type: STYLE_TYPE.DYNAMIC,
        options: {
          customColorRamp: [
            {
              stop: 0,
              color: '#FF0000',
            },
            {
              stop: 1,
              color: '#00FF00',
            },
          ],
          field: {
            name: 'population',
            origin: FIELD_ORIGIN.JOIN,
          },
          useCustomColorRamp: true,
        },
      },
      lineColor: {
        type: STYLE_TYPE.DYNAMIC,
        options: { color: '#3d3d3d', fieldMetaOptions: { isEnabled: true } },
      },
      lineWidth: { type: STYLE_TYPE.STATIC, options: { size: 1 } },
      iconSize: { type: STYLE_TYPE.STATIC, options: { size: 6 } },
      iconOrientation: {
        type: STYLE_TYPE.STATIC,
        options: { orientation: 0 },
      },
      labelText: { type: STYLE_TYPE.STATIC, options: { value: '' } },
      labelColor: {
        type: STYLE_TYPE.STATIC,
        options: { color: '#000000' },
      },
      labelSize: { type: STYLE_TYPE.STATIC, options: { size: 14 } },
      labelBorderColor: {
        type: STYLE_TYPE.STATIC,
        options: { color: '#FFFFFF' },
      },
      symbolizeAs: { options: { value: SYMBOLIZE_AS_TYPES.CIRCLE } },
      labelBorderSize: { options: { size: LABEL_BORDER_SIZES.SMALL } },
    },
    isTimeAware: true,
  },
  id: 'e8d1d974-eed8-462f-be2c-f0004b7619b2',
  label: null,
  minZoom: 0,
  maxZoom: 24,
  alpha: 0.75,
  visible: true,
  type: 'VECTOR',
};

[nreese]

Should getSource method return T instead of IVectorSource?

[thomasneirynck]

I don't think that's necessary. IVectorSource is the more generic return-type and none of the other IFields substitute this type for amore specific instance either. getSource is also the method that we want to remove from IField.

[elasticmachine]

Pinging @elastic/kibana-gis (Team:Geo)

[elasticmachine]

Pinging @elastic/uptime (Team:uptime)

[elasticmachine]

Pinging @elastic/apm-ui (Team:apm)

[nreese]

LGTM
code review

[justinkambic]

LGTM, UX app working fine with this patch.

[thomasneirynck]

@elasticmachine merge upstream

[kibanamachine]

💚 Build Succeeded

• continuous-integration/kibana-ci/pull-request
• Commit: 49b6a96

Metrics [docs]

Module Count

Fewer modules leads to a faster build time

id	before	after	diff
maps	685	689	+4

Async chunks

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

id	before	after	diff
apm	5.2MB	5.2MB	+50.0B
maps	2.6MB	2.6MB	+5.3KB
total			+5.4KB

Page load bundle

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

id	before	after	diff
maps	138.4KB	138.4KB	+44.0B

History

• 💚 Build #102386 succeeded 311d4ce
• 💔 Build #102241 failed 9510adc
• 💔 Build #102229 failed 21af7c8
• 💔 Build #101938 failed f12f0dc
• 💚 Build #101795 succeeded 95f658d

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@elasticmachine merge upstream