[ML] Anomaly detection: Fixes creating new jobs from Discover sessions with no data view

x-pack/platform/plugins/shared/ml/public/application/routing/routes/data_frame_analytics/analytics_job_creation.tsx

@@ -56,6 +56,7 @@ const PageWrapper: FC<PageProps> = ({ location }) => {
     services: {
       data: { dataViews: dataViewsService },
       savedSearch: savedSearchService,
+      notifications,
     },
   } = useMlKibana();
   const mlApi = useMlApi();
@@ -72,7 +73,8 @@ const PageWrapper: FC<PageProps> = ({ location }) => {
           mlApi,
           dataViewsService,
           savedSearchService,
-          DATA_FRAME_ANALYTICS
+          DATA_FRAME_ANALYTICS,
+          notifications
         ),
     }
   );

x-pack/platform/plugins/shared/ml/public/application/routing/routes/new_job/wizard.tsx

@@ -198,6 +198,7 @@ const PageWrapper: FC<WizardPageProps> = ({ location, jobType }) => {
       data: { dataViews: dataViewsService },
       savedSearch: savedSearchService,
       mlServices: { mlApi },
+      notifications,
     },
   } = useMlKibana();
   const { context, results } = useRouteResolver('full', ['canGetJobs', 'canCreateJob'], {
@@ -211,7 +212,8 @@ const PageWrapper: FC<WizardPageProps> = ({ location, jobType }) => {
         mlApi,
         dataViewsService,
         savedSearchService,
-        ANOMALY_DETECTOR
+        ANOMALY_DETECTOR,
+        notifications
       ),
     existingJobsAndGroups: () => mlApi.jobs.getAllJobAndGroupIds(),
   });

x-pack/platform/plugins/shared/ml/public/application/services/new_job_capabilities/load_new_job_capabilities.ts

@@ -7,11 +7,14 @@
 
 import type { DataView, DataViewsContract } from '@kbn/data-views-plugin/public';
 import type { SavedSearchPublicPluginStart } from '@kbn/saved-search-plugin/public';
+import type { NotificationsStart } from '@kbn/core/public';
+import { i18n } from '@kbn/i18n';
 import { getDataViewAndSavedSearchCallback } from '../../util/index_utils';
 import type { JobType } from '../../../../common/types/saved_objects';
 import type { MlApi } from '../ml_api_service';
 import { mlJobCapsServiceAnalyticsFactory } from './new_job_capabilities_service_analytics';
 import { mlJobCapsServiceFactory } from './new_job_capabilities_service';
+import { toastNotificationServiceProvider } from '../toast_notification_service/toast_notification_service';
 
 export const ANOMALY_DETECTOR = 'anomaly-detector';
 export const DATA_FRAME_ANALYTICS = 'data-frame-analytics';
@@ -24,7 +27,8 @@ export function loadNewJobCapabilities(
   mlApi: MlApi,
   dataViewsService: DataViewsContract,
   savedSearchService: SavedSearchPublicPluginStart,
-  jobType: JobType
+  jobType: JobType,
+  notifications: NotificationsStart
 ) {
   return new Promise(async (resolve, reject) => {
     try {
@@ -58,6 +62,12 @@ export function loadNewJobCapabilities(
         reject();
       }
     } catch (error) {
+      toastNotificationServiceProvider(notifications.toasts).displayErrorToast(
+        error,
+        i18n.translate('xpack.ml.newJob.capabilities.loadErrorTitle', {
+          defaultMessage: 'Failed to load job capabilities',
+        })
+      );
       reject(error);
     }
   });

x-pack/platform/plugins/shared/ml/public/application/util/index_utils.ts

@@ -9,6 +9,7 @@ import type { SavedSearch, SavedSearchPublicPluginStart } from '@kbn/saved-searc
 import { isCCSRemoteIndexName } from '@kbn/es-query';
 import type { Query, Filter } from '@kbn/es-query';
 import type { DataView, DataViewField, DataViewsContract } from '@kbn/data-views-plugin/common';
+import type { SearchSourceFields } from '@kbn/data-plugin/public';
 
 export interface DataViewAndSavedSearch {
   savedSearch: SavedSearch | null;
@@ -35,7 +36,28 @@ export const getDataViewAndSavedSearchCallback =
       return resp;
     }
     const dataViewId = ss.references?.find((r) => r.type === 'index-pattern')?.id;
-    resp.dataView = await deps.dataViewsService.get(dataViewId!);
+    if (dataViewId) {
+      resp.dataView = await deps.dataViewsService.get(dataViewId);
+    } else {
+      try {
+        const json: SearchSourceFields = JSON.parse(
+          ss.tabs![0].attributes.kibanaSavedObjectMeta.searchSourceJSON
+        );
+        if (!json.index) {
+          throw new Error('No data view found in Discover session');
+        }
+        resp.dataView = await deps.dataViewsService.create({
+          id: undefined,
+          title: json.index.title,
+          name: json.index.name,
+          timeFieldName: json.index.timeFieldName,
+        });
+      } catch (error) {
+        // eslint-disable-next-line no-console
+        console.error('No data view found in Discover session', error);
+        throw new Error('No data view found in Discover session');
+      }
+    }
     resp.savedSearch = ss;
     return resp;
   };