Merge branch 'main' into feature-discover-focus-h1

.github/CODEOWNERS

@@ -255,6 +255,10 @@
 #CC# /packages/kbn-expect/ @elastic/kibana-operations
 /.buildkite/ @elastic/kibana-operations
 
+# Scalability testing
+/packages/kbn-performance-testing-dataset-extractor/  @elastic/kibana-scalability-testing
+/packages/kbn-scalability-simulation-generator/  @elastic/kibana-scalability-testing
+
 # Quality Assurance
 /src/dev/code_coverage @elastic/kibana-qa
 /vars/*Coverage.groovy @elastic/kibana-qa
@@ -276,6 +280,7 @@
 /x-pack/plugins/saved_objects_tagging/ @elastic/kibana-core
 /x-pack/test/saved_objects_field_count/ @elastic/kibana-core
 /x-pack/test/saved_object_tagging/ @elastic/kibana-core
+/packages/core/  @elastic/kibana-core
 /packages/analytics/ @elastic/kibana-core
 /packages/kbn-config-schema/ @elastic/kibana-core
 /packages/kbn-std/ @elastic/kibana-core

docs/apm/tab-widgets/apm-app-reader/widget.asciidoc

@@ -4,22 +4,21 @@
     <button role="tab"
           aria-selected="true"
           aria-controls="data-streams-tab"
-          id="data-streams"
-          tabindex="-1">
+          id="data-streams">
       Data streams
     </button>
     <button role="tab"
             aria-selected="false"
             aria-controls="classic-indices-tab"
-            id="classic-indices">
+            id="classic-indices"
+            tabindex="-1">
       Classic APM indices
     </button>
   </div>
   <div tabindex="0"
        role="tabpanel"
        id="data-streams-tab"
-       aria-labelledby="data-streams"
-       hidden="">
+       aria-labelledby="data-streams">
 ++++
 
 include::content.asciidoc[tag=data-streams]
@@ -29,7 +28,8 @@ include::content.asciidoc[tag=data-streams]
   <div tabindex="0"
        role="tabpanel"
        id="classic-indices-tab"
-       aria-labelledby="classic-indices">
+       aria-labelledby="classic-indices"
+       hidden="">
 ++++
 
 include::content.asciidoc[tag=classic-indices]

docs/apm/tab-widgets/central-config-users/widget.asciidoc

@@ -4,22 +4,21 @@
     <button role="tab"
           aria-selected="true"
           aria-controls="data-streams-tab"
-          id="data-streams"
-          tabindex="-1">
+          id="data-streams">
       Data streams
     </button>
     <button role="tab"
             aria-selected="false"
             aria-controls="classic-indices-tab"
-            id="classic-indices">
+            id="classic-indices"
+            tabindex="-1">
       Classic APM indices
     </button>
   </div>
   <div tabindex="0"
        role="tabpanel"
        id="data-streams-tab"
-       aria-labelledby="data-streams"
-       hidden="">
+       aria-labelledby="data-streams">
 ++++
 
 include::content.asciidoc[tag=data-streams]
@@ -29,7 +28,8 @@ include::content.asciidoc[tag=data-streams]
   <div tabindex="0"
        role="tabpanel"
        id="classic-indices-tab"
-       aria-labelledby="classic-indices">
+       aria-labelledby="classic-indices"
+       hidden="">
 ++++
 
 include::content.asciidoc[tag=classic-indices]

docs/development/core/public/kibana-plugin-core-public.appmountparameters.md

@@ -20,5 +20,5 @@ export interface AppMountParameters<HistoryLocationState = unknown>
 |  [history](./kibana-plugin-core-public.appmountparameters.history.md) | ScopedHistory&lt;HistoryLocationState&gt; | A scoped history instance for your application. Should be used to wire up your applications Router. |
 |  [onAppLeave](./kibana-plugin-core-public.appmountparameters.onappleave.md) | (handler: AppLeaveHandler) =&gt; void | A function that can be used to register a handler that will be called when the user is leaving the current application, allowing to prompt a confirmation message before actually changing the page.<!-- -->This will be called either when the user goes to another application, or when trying to close the tab or manually changing the url. |
 |  [setHeaderActionMenu](./kibana-plugin-core-public.appmountparameters.setheaderactionmenu.md) | (menuMount: MountPoint \| undefined) =&gt; void | A function that can be used to set the mount point used to populate the application action container in the chrome header.<!-- -->Calling the handler multiple time will erase the current content of the action menu with the mount from the latest call. Calling the handler with <code>undefined</code> will unmount the current mount point. Calling the handler after the application has been unmounted will have no effect. |
-|  [theme$](./kibana-plugin-core-public.appmountparameters.theme_.md) | Observable&lt;CoreTheme&gt; | An observable emitting [Core's theme](./kibana-plugin-core-public.coretheme.md)<!-- -->. Should be used when mounting the application to include theme information. |
+|  [theme$](./kibana-plugin-core-public.appmountparameters.theme_.md) | Observable&lt;CoreTheme&gt; | An observable emitting . Should be used when mounting the application to include theme information. |
 

docs/development/core/public/kibana-plugin-core-public.appmountparameters.theme_.md

@@ -4,7 +4,7 @@
 
 ## AppMountParameters.theme$ property
 
-An observable emitting [Core's theme](./kibana-plugin-core-public.coretheme.md)<!-- -->. Should be used when mounting the application to include theme information.
+An observable emitting . Should be used when mounting the application to include theme information.
 
 <b>Signature:</b>
 

docs/development/core/public/kibana-plugin-core-public.coresetup.md

@@ -24,6 +24,6 @@ export interface CoreSetup<TPluginsStart extends object = object, TStart = unkno
 |  [http](./kibana-plugin-core-public.coresetup.http.md) | HttpSetup | [HttpSetup](./kibana-plugin-core-public.httpsetup.md) |
 |  [injectedMetadata](./kibana-plugin-core-public.coresetup.injectedmetadata.md) | InjectedMetadataSetup |  |
 |  [notifications](./kibana-plugin-core-public.coresetup.notifications.md) | NotificationsSetup | [NotificationsSetup](./kibana-plugin-core-public.notificationssetup.md) |
-|  [theme](./kibana-plugin-core-public.coresetup.theme.md) | ThemeServiceSetup | [ThemeServiceSetup](./kibana-plugin-core-public.themeservicesetup.md) |
+|  [theme](./kibana-plugin-core-public.coresetup.theme.md) | ThemeServiceSetup |  |
 |  [uiSettings](./kibana-plugin-core-public.coresetup.uisettings.md) | IUiSettingsClient | [IUiSettingsClient](./kibana-plugin-core-public.iuisettingsclient.md) |
 

docs/development/core/public/kibana-plugin-core-public.coresetup.theme.md

@@ -4,7 +4,6 @@
 
 ## CoreSetup.theme property
 
-[ThemeServiceSetup](./kibana-plugin-core-public.themeservicesetup.md)
 
 <b>Signature:</b>
 

docs/development/core/public/kibana-plugin-core-public.corestart.md

@@ -29,6 +29,6 @@ export interface CoreStart
 |  [notifications](./kibana-plugin-core-public.corestart.notifications.md) | NotificationsStart | [NotificationsStart](./kibana-plugin-core-public.notificationsstart.md) |
 |  [overlays](./kibana-plugin-core-public.corestart.overlays.md) | OverlayStart | [OverlayStart](./kibana-plugin-core-public.overlaystart.md) |
 |  [savedObjects](./kibana-plugin-core-public.corestart.savedobjects.md) | SavedObjectsStart | [SavedObjectsStart](./kibana-plugin-core-public.savedobjectsstart.md) |
-|  [theme](./kibana-plugin-core-public.corestart.theme.md) | ThemeServiceStart | [ThemeServiceStart](./kibana-plugin-core-public.themeservicestart.md) |
+|  [theme](./kibana-plugin-core-public.corestart.theme.md) | ThemeServiceStart |  |
 |  [uiSettings](./kibana-plugin-core-public.corestart.uisettings.md) | IUiSettingsClient | [IUiSettingsClient](./kibana-plugin-core-public.iuisettingsclient.md) |
 

docs/development/core/public/kibana-plugin-core-public.corestart.theme.md

@@ -4,7 +4,6 @@
 
 ## CoreStart.theme property
 
-[ThemeServiceStart](./kibana-plugin-core-public.themeservicestart.md)
 
 <b>Signature:</b>
 

docs/development/core/public/kibana-plugin-core-public.md

@@ -57,7 +57,6 @@ The plugin integrates with the core system via lifecycle events: `setup`<!-- -->
 |  [ChromeUserBanner](./kibana-plugin-core-public.chromeuserbanner.md) |  |
 |  [CoreSetup](./kibana-plugin-core-public.coresetup.md) | Core services exposed to the <code>Plugin</code> setup lifecycle |
 |  [CoreStart](./kibana-plugin-core-public.corestart.md) | Core services exposed to the <code>Plugin</code> start lifecycle |
-|  [CoreTheme](./kibana-plugin-core-public.coretheme.md) | Contains all the required information to apply Kibana's theme at the various levels it can be used. |
 |  [DeprecationsServiceStart](./kibana-plugin-core-public.deprecationsservicestart.md) | DeprecationsService provides methods to fetch domain deprecation details from the Kibana server. |
 |  [ErrorToastOptions](./kibana-plugin-core-public.errortoastoptions.md) | Options available for [IToasts](./kibana-plugin-core-public.itoasts.md) error APIs. |
 |  [ExecutionContextSetup](./kibana-plugin-core-public.executioncontextsetup.md) | Kibana execution context. Used to provide execution context to Elasticsearch, reporting, performance monitoring, etc. |
@@ -133,8 +132,6 @@ The plugin integrates with the core system via lifecycle events: `setup`<!-- -->
 |  [SavedObjectsResolveResponse](./kibana-plugin-core-public.savedobjectsresolveresponse.md) |  |
 |  [SavedObjectsStart](./kibana-plugin-core-public.savedobjectsstart.md) |  |
 |  [SavedObjectsUpdateOptions](./kibana-plugin-core-public.savedobjectsupdateoptions.md) |  |
-|  [ThemeServiceSetup](./kibana-plugin-core-public.themeservicesetup.md) |  |
-|  [ThemeServiceStart](./kibana-plugin-core-public.themeservicestart.md) |  |
 |  [ToastOptions](./kibana-plugin-core-public.toastoptions.md) | Options available for [IToasts](./kibana-plugin-core-public.itoasts.md) APIs. |
 |  [UiSettingsParams](./kibana-plugin-core-public.uisettingsparams.md) | UiSettings parameters defined by the plugins. |
 |  [UiSettingsState](./kibana-plugin-core-public.uisettingsstate.md) |  |

docs/setup/upgrade/resolving-migration-failures.asciidoc

@@ -85,6 +85,16 @@ DELETE .kibana_7.12.0_001/_doc/marketing_space:dashboard:e3c5fc71-ac71-4805-bcab
 +
 The dashboard with the `e3c5fc71-ac71-4805-bcab-2bcc9cc93275` ID that belongs to the `marketing_space` space **is no longer available**.
 
+You can configure {kib} to automatically discard all corrupt objects and transform errors that occur during a migration. When setting the configuration option `migrations.discardCorruptObjects`, {kib} will delete the conflicting objects and proceed with the migration.
+ For instance, for an upgrade to 8.4.0, you can define the following setting in kibana.yml:
+
+[source,yaml]
+--------------------------------------------
+migrations.discardCorruptObjects: "8.4.0"
+--------------------------------------------
+
+**WARNING:** Enabling the flag above will cause the system to discard all corrupt objects, as well as those causing transform errors. Thus, it is HIGHLY recommended that you carefully review the list of conflicting objects in the logs.
+
 [float]
 [[unknown-saved-object-types]]
 ==== Documents for unknown saved objects
@@ -113,12 +123,12 @@ Unable to complete saved object migrations for the [.kibana] index: Migration fa
 To proceed with the migration you can configure Kibana to discard unknown saved objects for this migration.
 --------------------------------------------
 
-To proceed with the migration, re-enable any plugins that previously created these saved objects. Alternatively, carefully review the list of unknown saved objects in the Kibana log entry. If the corresponding disabled plugins and their associated saved objects will no longer be used, they can be deleted by setting the configuration option `migrations.discardUnknownObjects` to the version you are upgrading to.
-For instance, for an upgrade to 8.3.0, you can define the following setting in kibana.yml:
+To proceed with the migration, re-enable any plugins that previously created these saved objects. Alternatively, carefully review the list of unknown saved objects in the {kib} log entry. If the corresponding disabled plugins and their associated saved objects will no longer be used, they can be deleted by setting the configuration option `migrations.discardUnknownObjects` to the version you are upgrading to.
+For instance, for an upgrade to 8.4.0, you can define the following setting in kibana.yml:
 
 [source,yaml]
 --------------------------------------------
-migrations.discardUnknownObjects: "8.3.0"
+migrations.discardUnknownObjects: "8.4.0"
 --------------------------------------------
 
 [float]

package.json

@@ -162,6 +162,9 @@
     "@kbn/core-injected-metadata-browser-internal": "link:bazel-bin/packages/core/injected-metadata/core-injected-metadata-browser-internal",
     "@kbn/core-injected-metadata-browser-mocks": "link:bazel-bin/packages/core/injected-metadata/core-injected-metadata-browser-mocks",
     "@kbn/core-injected-metadata-common-internal": "link:bazel-bin/packages/core/injected-metadata/core-injected-metadata-common-internal",
+    "@kbn/core-theme-browser": "link:bazel-bin/packages/core/theme/core-theme-browser",
+    "@kbn/core-theme-browser-internal": "link:bazel-bin/packages/core/theme/core-theme-browser-internal",
+    "@kbn/core-theme-browser-mocks": "link:bazel-bin/packages/core/theme/core-theme-browser-mocks",
     "@kbn/crypto": "link:bazel-bin/packages/kbn-crypto",
     "@kbn/datemath": "link:bazel-bin/packages/kbn-datemath",
     "@kbn/doc-links": "link:bazel-bin/packages/kbn-doc-links",
@@ -533,6 +536,7 @@
     "@kbn/plugin-generator": "link:bazel-bin/packages/kbn-plugin-generator",
     "@kbn/plugin-helpers": "link:bazel-bin/packages/kbn-plugin-helpers",
     "@kbn/pm": "link:packages/kbn-pm",
+    "@kbn/scalability-simulation-generator": "link:bazel-bin/packages/kbn-scalability-simulation-generator",
     "@kbn/sort-package-json": "link:bazel-bin/packages/kbn-sort-package-json",
     "@kbn/spec-to-console": "link:bazel-bin/packages/kbn-spec-to-console",
     "@kbn/stdio-dev-helpers": "link:bazel-bin/packages/kbn-stdio-dev-helpers",
@@ -675,6 +679,9 @@
     "@types/kbn__core-injected-metadata-common-internal": "link:bazel-bin/packages/core/injected-metadata/core-injected-metadata-common-internal/npm_module_types",
     "@types/kbn__core-public-internal-base": "link:bazel-bin/packages/core/public/internal-base/npm_module_types",
     "@types/kbn__core-server-internal-base": "link:bazel-bin/packages/core/server/internal-base/npm_module_types",
+    "@types/kbn__core-theme-browser": "link:bazel-bin/packages/core/theme/core-theme-browser/npm_module_types",
+    "@types/kbn__core-theme-browser-internal": "link:bazel-bin/packages/core/theme/core-theme-browser-internal/npm_module_types",
+    "@types/kbn__core-theme-browser-mocks": "link:bazel-bin/packages/core/theme/core-theme-browser-mocks/npm_module_types",
     "@types/kbn__crypto": "link:bazel-bin/packages/kbn-crypto/npm_module_types",
     "@types/kbn__datemath": "link:bazel-bin/packages/kbn-datemath/npm_module_types",
     "@types/kbn__dev-cli-errors": "link:bazel-bin/packages/kbn-dev-cli-errors/npm_module_types",
@@ -709,6 +716,7 @@
     "@types/kbn__plugin-helpers": "link:bazel-bin/packages/kbn-plugin-helpers/npm_module_types",
     "@types/kbn__react-field": "link:bazel-bin/packages/kbn-react-field/npm_module_types",
     "@types/kbn__rule-data-utils": "link:bazel-bin/packages/kbn-rule-data-utils/npm_module_types",
+    "@types/kbn__scalability-simulation-generator": "link:bazel-bin/packages/kbn-scalability-simulation-generator/npm_module_types",
     "@types/kbn__securitysolution-autocomplete": "link:bazel-bin/packages/kbn-securitysolution-autocomplete/npm_module_types",
     "@types/kbn__securitysolution-es-utils": "link:bazel-bin/packages/kbn-securitysolution-es-utils/npm_module_types",
     "@types/kbn__securitysolution-hook-utils": "link:bazel-bin/packages/kbn-securitysolution-hook-utils/npm_module_types",

packages/BUILD.bazel

@@ -29,6 +29,9 @@ filegroup(
     "//packages/core/injected-metadata/core-injected-metadata-browser-mocks:build",
     "//packages/core/injected-metadata/core-injected-metadata-browser:build",
     "//packages/core/injected-metadata/core-injected-metadata-common-internal:build",
+    "//packages/core/theme/core-theme-browser-internal:build",
+    "//packages/core/theme/core-theme-browser-mocks:build",
+    "//packages/core/theme/core-theme-browser:build",
     "//packages/elastic-apm-synthtrace:build",
     "//packages/elastic-safer-lodash-set:build",
     "//packages/kbn-ace:build",
@@ -90,6 +93,7 @@ filegroup(
     "//packages/kbn-plugin-helpers:build",
     "//packages/kbn-react-field:build",
     "//packages/kbn-rule-data-utils:build",
+    "//packages/kbn-scalability-simulation-generator:build",
     "//packages/kbn-securitysolution-autocomplete:build",
     "//packages/kbn-securitysolution-es-utils:build",
     "//packages/kbn-securitysolution-hook-utils:build",
@@ -165,6 +169,9 @@ filegroup(
     "//packages/core/injected-metadata/core-injected-metadata-browser-mocks:build_types",
     "//packages/core/injected-metadata/core-injected-metadata-browser:build_types",
     "//packages/core/injected-metadata/core-injected-metadata-common-internal:build_types",
+    "//packages/core/theme/core-theme-browser-internal:build_types",
+    "//packages/core/theme/core-theme-browser-mocks:build_types",
+    "//packages/core/theme/core-theme-browser:build_types",
     "//packages/elastic-apm-synthtrace:build_types",
     "//packages/elastic-safer-lodash-set:build_types",
     "//packages/kbn-ace:build_types",
@@ -217,6 +224,7 @@ filegroup(
     "//packages/kbn-plugin-helpers:build_types",
     "//packages/kbn-react-field:build_types",
     "//packages/kbn-rule-data-utils:build_types",
+    "//packages/kbn-scalability-simulation-generator:build_types",
     "//packages/kbn-securitysolution-autocomplete:build_types",
     "//packages/kbn-securitysolution-es-utils:build_types",
     "//packages/kbn-securitysolution-hook-utils:build_types",