Adds find by value embeddables helper (#89629)

Co-authored-by: Kibana Machine <42973632+kibanamachine@users.noreply.github.com>

src/plugins/dashboard/server/index.ts

@@ -25,3 +25,4 @@ export function plugin(initializerContext: PluginInitializerContext) {
 }
 
 export { DashboardPluginSetup, DashboardPluginStart } from './types';
+export { findByValueEmbeddables } from './usage/find_by_value_embeddables';

src/plugins/dashboard/server/usage/find_by_value_embeddables.test.ts

@@ -0,0 +1,60 @@
+/*
+ * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
+ * or more contributor license agreements. Licensed under the Elastic License
+ * and the Server Side Public License, v 1; you may not use this file except in
+ * compliance with, at your election, the Elastic License or the Server Side
+ * Public License, v 1.
+ */
+
+import { SavedDashboardPanel730ToLatest } from '../../common';
+import { findByValueEmbeddables } from './find_by_value_embeddables';
+
+const visualizationByValue = ({
+  embeddableConfig: {
+    value: 'visualization-by-value',
+  },
+  type: 'visualization',
+} as unknown) as SavedDashboardPanel730ToLatest;
+
+const mapByValue = ({
+  embeddableConfig: {
+    value: 'map-by-value',
+  },
+  type: 'map',
+} as unknown) as SavedDashboardPanel730ToLatest;
+
+const embeddableByRef = ({
+  panelRefName: 'panel_ref_1',
+} as unknown) as SavedDashboardPanel730ToLatest;
+
+describe('findByValueEmbeddables', () => {
+  it('finds the by value embeddables for the given type', async () => {
+    const savedObjectsResult = {
+      saved_objects: [
+        {
+          attributes: {
+            panelsJSON: JSON.stringify([visualizationByValue, mapByValue, embeddableByRef]),
+          },
+        },
+        {
+          attributes: {
+            panelsJSON: JSON.stringify([embeddableByRef, mapByValue, visualizationByValue]),
+          },
+        },
+      ],
+    };
+    const savedObjectClient = { find: jest.fn().mockResolvedValue(savedObjectsResult) };
+
+    const maps = await findByValueEmbeddables(savedObjectClient, 'map');
+
+    expect(maps.length).toBe(2);
+    expect(maps[0]).toEqual(mapByValue.embeddableConfig);
+    expect(maps[1]).toEqual(mapByValue.embeddableConfig);
+
+    const visualizations = await findByValueEmbeddables(savedObjectClient, 'visualization');
+
+    expect(visualizations.length).toBe(2);
+    expect(visualizations[0]).toEqual(visualizationByValue.embeddableConfig);
+    expect(visualizations[1]).toEqual(visualizationByValue.embeddableConfig);
+  });
+});

src/plugins/dashboard/server/usage/find_by_value_embeddables.ts

@@ -0,0 +1,34 @@
+/*
+ * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
+ * or more contributor license agreements. Licensed under the Elastic License
+ * and the Server Side Public License, v 1; you may not use this file except in
+ * compliance with, at your election, the Elastic License or the Server Side
+ * Public License, v 1.
+ */
+
+import { ISavedObjectsRepository, SavedObjectAttributes } from 'kibana/server';
+import { SavedDashboardPanel730ToLatest } from '../../common';
+
+export const findByValueEmbeddables = async (
+  savedObjectClient: Pick<ISavedObjectsRepository, 'find'>,
+  embeddableType: string
+) => {
+  const dashboards = await savedObjectClient.find<SavedObjectAttributes>({
+    type: 'dashboard',
+  });
+
+  return dashboards.saved_objects
+    .map((dashboard) => {
+      try {
+        return (JSON.parse(
+          dashboard.attributes.panelsJSON as string
+        ) as unknown) as SavedDashboardPanel730ToLatest[];
+      } catch (exception) {
+        return [];
+      }
+    })
+    .flat()
+    .filter((panel) => (panel as Record<string, any>).panelRefName === undefined)
+    .filter((panel) => panel.type === embeddableType)
+    .map((panel) => panel.embeddableConfig);
+};