Add updated_at column to objects' tables

src/core/public/saved_objects/saved_objects_client.test.ts

@@ -33,11 +33,13 @@ import { SimpleSavedObject } from './simple_saved_object';
 import { httpServiceMock } from '../http/http_service.mock';
 
 describe('SavedObjectsClient', () => {
+  const updatedAt = new Date().toISOString();
   const doc = {
     id: 'AVwSwFxtcMV38qjDZoQg',
     type: 'config',
     attributes: { title: 'Example title' },
     version: 'foo',
+    updated_at: updatedAt,
   };
 
   const http = httpServiceMock.createStartContract();
@@ -356,7 +358,7 @@ describe('SavedObjectsClient', () => {
           Array [
             "/api/saved_objects/_bulk_create",
             Object {
-              "body": "[{\\"id\\":\\"AVwSwFxtcMV38qjDZoQg\\",\\"type\\":\\"config\\",\\"attributes\\":{\\"title\\":\\"Example title\\"},\\"version\\":\\"foo\\"}]",
+              "body": "[{\\"id\\":\\"AVwSwFxtcMV38qjDZoQg\\",\\"type\\":\\"config\\",\\"attributes\\":{\\"title\\":\\"Example title\\"},\\"version\\":\\"foo\\",\\"updated_at\\":\\"${updatedAt}\\"}]",
               "method": "POST",
               "query": Object {
                 "overwrite": false,
@@ -374,7 +376,7 @@ describe('SavedObjectsClient', () => {
           Array [
             "/api/saved_objects/_bulk_create",
             Object {
-              "body": "[{\\"id\\":\\"AVwSwFxtcMV38qjDZoQg\\",\\"type\\":\\"config\\",\\"attributes\\":{\\"title\\":\\"Example title\\"},\\"version\\":\\"foo\\"}]",
+              "body": "[{\\"id\\":\\"AVwSwFxtcMV38qjDZoQg\\",\\"type\\":\\"config\\",\\"attributes\\":{\\"title\\":\\"Example title\\"},\\"version\\":\\"foo\\",\\"updated_at\\":\\"${updatedAt}\\"}]",
               "method": "POST",
               "query": Object {
                 "overwrite": true,

src/core/public/saved_objects/simple_saved_object.test.ts

@@ -67,4 +67,11 @@ describe('SimpleSavedObject', () => {
     const savedObject = new SimpleSavedObject(client, { version } as SavedObject);
     expect(savedObject._version).toEqual(version);
   });
+
+  it('persists updated_at', () => {
+    const updatedAt = new Date().toString();
+
+    const savedObject = new SimpleSavedObject(client, { updated_at: updatedAt } as SavedObject);
+    expect(savedObject.updated_at).toEqual(updatedAt);
+  });
 });

src/core/public/saved_objects/simple_saved_object.ts

@@ -51,17 +51,29 @@ export class SimpleSavedObject<T = unknown> {
   public migrationVersion: SavedObjectType<T>['migrationVersion'];
   public error: SavedObjectType<T>['error'];
   public references: SavedObjectType<T>['references'];
+  public updated_at: SavedObjectType<T>['updated_at'];
 
   constructor(
     private client: SavedObjectsClientContract,
-    { id, type, version, attributes, error, references, migrationVersion }: SavedObjectType<T>
+    {
+      id,
+      type,
+      version,
+      attributes,
+      error,
+      references,
+      migrationVersion,
+      // eslint-disable-next-line @typescript-eslint/naming-convention
+      updated_at,
+    }: SavedObjectType<T>
   ) {
     this.id = id;
     this.type = type;
     this.attributes = attributes || ({} as T);
     this.references = references || [];
     this._version = version;
     this.migrationVersion = migrationVersion;
+    this.updated_at = updated_at;
     if (error) {
       this.error = error;
     }

src/plugins/dashboard/public/application/listing/dashboard_listing.js

@@ -30,6 +30,7 @@
 
 import React, { Fragment } from 'react';
 import PropTypes from 'prop-types';
+import moment from 'moment';
 
 import { FormattedMessage, I18nProvider } from '@osd/i18n/react';
 import { i18n } from '@osd/i18n';
@@ -161,6 +162,7 @@ export class DashboardListing extends React.Component {
   }
 
   getTableColumns() {
+    const dateFormat = this.props.core.uiSettings.get('dateFormat');
     const tableColumns = [
       {
         field: 'title',
@@ -185,6 +187,19 @@ export class DashboardListing extends React.Component {
         dataType: 'string',
         sortable: true,
       },
+      {
+        field: `updated_at`,
+        name: i18n.translate('dashboard.listing.table.columnUpdatedAtName', {
+          defaultMessage: 'Last updated',
+        }),
+        dataType: 'date',
+        sortable: true,
+        description: i18n.translate('dashboard.listing.table.columnUpdatedAtDescription', {
+          defaultMessage: 'Last update of the saved object',
+        }),
+        ['data-test-subj']: 'updated-at',
+        render: (updatedAt) => updatedAt && moment(updatedAt).format(dateFormat),
+      },
     ];
     return tableColumns;
   }

src/plugins/saved_objects/public/saved_object/saved_object_loader.test.ts

@@ -0,0 +1,61 @@
+/*
+ * Copyright OpenSearch Contributors
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+import { SavedObjectsClientContract } from 'opensearch-dashboards/public';
+import { SavedObjectLoader } from './saved_object_loader';
+
+describe('SimpleSavedObjectLoader', () => {
+  const createLoader = (updatedAt?: any) => {
+    const id = 'logstash-*';
+    const type = 'index-pattern';
+
+    const savedObject = {
+      attributes: {},
+      id,
+      type,
+      updated_at: updatedAt as any,
+    };
+
+    client = {
+      ...client,
+      find: jest.fn(() =>
+        Promise.resolve({
+          total: 1,
+          savedObjects: [savedObject],
+        })
+      ),
+    } as any;
+
+    return new SavedObjectLoader(savedObject, client);
+  };
+
+  let client: SavedObjectsClientContract;
+  let loader: SavedObjectLoader;
+  beforeEach(() => {
+    client = {
+      update: jest.fn(),
+      create: jest.fn(),
+      delete: jest.fn(),
+    } as any;
+  });
+
+  afterEach(async () => {
+    const savedObjects = await loader.findAll();
+
+    expect(savedObjects.hits[0].updated_at).toEqual(undefined);
+  });
+
+  it('set updated_at as undefined if undefined', async () => {
+    loader = createLoader(undefined);
+  });
+
+  it("set updated_at as undefined if doesn't exist", async () => {
+    loader = createLoader();
+  });
+
+  it('set updated_at as undefined if null', async () => {
+    loader = createLoader(null);
+  });
+});