[ML] Single Metric Viewer: Enable cross-filtering for 'by', 'over' and 'partition' field values

x-pack/plugins/ml/common/types/storage.ts

@@ -35,6 +35,10 @@ export type PartitionFieldConfig =
         by: 'anomaly_score' | 'name';
         order: 'asc' | 'desc';
       };
+      filterBy?: {
+        field: `${MlEntityFieldType}_value`;
+        query: string;
+      };
     }
   | undefined;
 

x-pack/plugins/ml/public/application/timeseriesexplorer/components/series_controls/series_controls.tsx

@@ -24,7 +24,7 @@ import type {
 } from '../../../../../common/types/anomaly_detection_jobs';
 import { useMlKibana } from '../../../contexts/kibana';
 import { APP_STATE_ACTION } from '../../timeseriesexplorer_constants';
-import type { ComboBoxOption, EntityControlProps } from '../entity_control/entity_control';
+import type { ComboBoxOption, Entity, EntityControlProps } from '../entity_control/entity_control';
 import { EMPTY_FIELD_VALUE_LABEL } from '../entity_control/entity_control';
 import { getControlsForDetector } from '../../get_controls_for_detector';
 import {
@@ -53,19 +53,36 @@ export type UiPartitionFieldsConfig = Exclude<PartitionFieldsConfig, undefined>;
 
 export type UiPartitionFieldConfig = Exclude<PartitionFieldConfig, undefined>;
 
+/**
+ * Returns a filterBy object based on the partition_field value.
+ */
+const getFilterBy = (entities: Entity[]): Pick<UiPartitionFieldConfig, 'filterBy'> | null => {
+  const query = entities.find((e) => e.fieldType === 'partition_field')?.fieldValue;
+
+  if (!query) return null;
+
+  return {
+    filterBy: {
+      field: 'partition_field_value',
+      query,
+    },
+  };
+};
+
 /**
  * Provides default fields configuration.
  */
 const getDefaultFieldConfig = (
-  fieldTypes: MlEntityFieldType[],
+  entities: Entity[],
   isAnomalousOnly: boolean,
   applyTimeRange: boolean
 ): UiPartitionFieldsConfig => {
-  return fieldTypes.reduce((acc, f) => {
-    acc[f] = {
+  return entities.reduce((acc, f) => {
+    acc[f.fieldType] = {
       applyTimeRange,
       anomalousOnly: isAnomalousOnly,
       sort: { by: 'anomaly_score', order: 'desc' },
+      ...(f.fieldType === 'by_field' ? getFilterBy(entities) : {}),
     };
     return acc;
   }, {} as UiPartitionFieldsConfig);
@@ -143,7 +160,7 @@ export const SeriesControls: FC<PropsWithChildren<SeriesControlsProps>> = ({
   const resultFieldsConfig = useMemo(() => {
     return {
       ...getDefaultFieldConfig(
-        entityControls.map((v) => v.fieldType),
+        entityControls,
         !storageFieldsConfig
           ? true
           : Object.values(storageFieldsConfig).some((v) => !!v?.anomalousOnly),

x-pack/plugins/ml/server/models/results_service/get_partition_fields_values.ts

@@ -77,6 +77,17 @@ function getFieldAgg(
                   },
                 ]
               : []),
+            ...(fieldConfig?.filterBy
+              ? [
+                  {
+                    term: {
+                      [fieldConfig.filterBy.field]: {
+                        value: fieldConfig.filterBy.query,
+                      },
+                    },
+                  },
+                ]
+              : []),
           ],
         },
       },

x-pack/plugins/ml/server/routes/schemas/results_service_schema.ts

@@ -61,6 +61,12 @@ const fieldConfig = schema.maybe(
       by: schema.string(),
       order: schema.maybe(schema.string()),
     }),
+    filterBy: schema.maybe(
+      schema.object({
+        field: schema.string(),
+        query: schema.string(),
+      })
+    ),
   })
 );