[ML] New platform migration

[peteharverson]

Meta issue outlining the work required to migrate the ML plugin to the new platform.

Server Side

• Shim server side ([ML] New Platform Migration - server #38360)
• Switch from Angular to React router
  • Switch to ES and Saved Objects client provided by Request object
• Migrate everything from legacy shim to NP equivalent
  • refactor licensePreRoutingFactory to use the licensing plugin rather than the legacy
    xpackMainPlugin (Melissa) [ML] NP: migrate server #58680
  • replace use of legacy xpackMainPlugin
  • Migrate all server routes to use NP router and ES plugin (related kibana issue https://github.com/elastic/kibana-team/issues/167)
    • dataFrameAnalyticsRoutes
    • annotationRoutes [ML] New Platform server shim: update annotation routes to use new platform router  #57067
    • jobRoutes/anomalyDetector routes [ML] New Platform server shim: update anomaly detectors routes to use new platform router #56717
    • dataFeedRoutes [ML] New Platform server shim: update datafeed routes #57739
    • indicesRoutes
    • jobValidationRoutes [ML] New Platform server shim: update job validation routes  #57644
      • replace legacy route with NP router
      • replace use of legacy elasticsearchPlugin.getCluster('admin') in callWithInternalUserFactory with context.ml.mlClient.callAsInternalUser
    • notificationRoutes [ML] New Platform server shim: update notification routes #57906
    • systemRoutes [ML] New Platform server shim: update system routes #57835
      • replace legacy route with NP router
      • replace use of legacy elasticsearchPlugin.getCluster('admin') in callWithInternalUserFactory with context.ml.mlClient.callAsInternalUser
    • dataRecognizer [ML] New Platform server shim: update recognize modules routes to use new platform router #57206
    • dataVisualizerRoutes [ML] New Platform server shim: update data visualizer routes to use new platform router #56739
    • calendars [ML] New Platform server shim: update calendar routes to use new platform router #56264
    • fieldsService [ML] New Platform server shim: update fields service routes #58060
    • filtersRoutes [ML] New Platform server shim: update filters routes to use new platform router #57597
    • resultsServiceRoutes [ML] New Platform server shim: update results service routes to use new platform router #56886
    • jobServiceRoutes [ML] New Platform server shim: update job service routes to use new platform router #57403
    • jobAuditMessagesRoutes [ML] New Platform server shim: update job audit messages routes #57925
    • fileDataVisualizerRoutes [ML] New Platform server shim: update file data visualizer routes to use new platform router #56972
      • replace legacy route with NP router
      • remove dependency on legacy elasticsearchPlugin.getCluster('admin') in callWithInternalUserFactory [ML] New Platform server shim: update usage collector to use core savedObjects #58058
    • usage collector (makeMlUsageCollector) (Melissa) [ML] New Platform server shim: update usage collector to use core savedObjects #58058
• Migrate to use any external plugin dependencies
• Remove legacy call_with_request_factory and call_with_internal_user_factory once they are no longer used [ML] NP: migrate server #58680
• Delete shim [ML] NP: migrate server #58680
• ensure management page still shows up (remove dependence on xpackInfo)
• server/plugin - unsubscribe from license$ observable in the stop phase.
• expose endpoint functionality for other plugins to use

Browser

• Convert all Angular based components to use React (see [ML] Migrate Angular-based components to React #18374)
• Shim client side
• Remove use of Angular injectables (used in directives, controllers, services)
  • config
  • indexPatterns
  • kbnUrl
  • kbnBaseUrl
  • Private
  • reactDirective
  • savedSearches
  • $route
  • $compile (used in 2 tests, explorer_directive.js, timeseriesexplorer_directive.js)
  • $scope (management page jobs list)
  • $timeout
• Move ui utils not in NP into ML
  • ui/time_buckets ([ML] Combines ui/time_buckets into MlTimeBuckets #46227)
  • ui/url/relative_to_absolute, ui/utils/ordinal_suffix, ui/utils/parse_interval ([ML] Moves URL, interval and ordinal ui utils into ML #47221)
• Migrate ui util imports to NP equivalents
  • ui/autocomplete_providers
  • ui/chrome (management)
  • ui/index_patterns
  • ui/management (management)
  • ui/metadata (management)
  • ui/notify
  • ui/registry/feature_catalogue
  • ui/registry/field_formats
  • ui/resize_checker
  • ui/saved_objects
  • ui/system_api (used in http service for headers)
  • ui/timefilter
  • ui/i18n (management)
  • ui/utils/query_string
  • ui/new_platform
• Convert management plugins from angular
• Move all ui util imports to single Context
• Replace use of AppState and GlobalState ([ML] Fix appState/globalState #52986)
• Replace our http service with Kibana core.http client ([ML] Use Kibana's HttpHandler for HTTP requests #59320)
• Migrate everything from legacy shim to NP equivalent
• Migrate to use any external plugin dependencies
• Delete shim

Plugin

• Move everything to new plugin folder to actually boot up via new platform

[elasticmachine]

Pinging @elastic/ml-ui (:ml)

[peteharverson]

Closing issue as work to migrate ML to the new platform is complete for 7.7.0.