Url service locators

src/plugins/discover/public/url_generator.ts

@@ -6,16 +6,10 @@
  * Side Public License, v 1.
  */
 
-import {
-  TimeRange,
-  Filter,
-  Query,
-  esFilters,
-  QueryState,
-  RefreshInterval,
-} from '../../data/public';
+import type { UrlGeneratorsDefinition } from '../../share/public';
+import type { TimeRange, Filter, Query, QueryState, RefreshInterval } from '../../data/public';
+import { esFilters } from '../../data/public';
 import { setStateToKbnUrl } from '../../kibana_utils/public';
-import { UrlGeneratorsDefinition } from '../../share/public';
 
 export const DISCOVER_APP_URL_GENERATOR = 'DISCOVER_APP_URL_GENERATOR';
 
@@ -71,10 +65,12 @@ export interface DiscoverUrlGeneratorState {
    * Used interval of the histogram
    */
   interval?: string;
+
   /**
    * Array of the used sorting [[field,direction],...]
    */
   sort?: string[][];
+
   /**
    * id of the used saved query
    */

src/plugins/share/common/url_service/__tests__/locators.test.ts

@@ -0,0 +1,165 @@
+/*
+ * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
+ * or more contributor license agreements. Licensed under the Elastic License
+ * 2.0 and the Server Side Public License, v 1; you may not use this file except
+ * in compliance with, at your election, the Elastic License 2.0 or the Server
+ * Side Public License, v 1.
+ */
+
+import { of } from 'src/plugins/kibana_utils/common';
+import { testLocator, TestLocatorState, urlServiceTestSetup } from './setup';
+
+describe('locators', () => {
+  test('can start locators service', () => {
+    const {
+      service: { locators },
+    } = urlServiceTestSetup();
+
+    expect(typeof locators).toBe('object');
+    expect(typeof locators.create).toBe('function');
+    expect(typeof locators.get).toBe('function');
+  });
+
+  test('returns "undefined" for unregistered locator', () => {
+    const {
+      service: { locators },
+    } = urlServiceTestSetup();
+
+    expect(locators.get(testLocator.id)).toBe(undefined);
+  });
+
+  test('can register a locator', () => {
+    const {
+      service: { locators },
+    } = urlServiceTestSetup();
+
+    locators.create(testLocator);
+    expect(typeof locators.get(testLocator.id)).toBe('object');
+  });
+
+  test('getLocation() returns KibanaLocation generated by the locator', async () => {
+    const {
+      service: { locators },
+    } = urlServiceTestSetup();
+
+    locators.create(testLocator);
+
+    const locator = locators.get<TestLocatorState>(testLocator.id);
+    const location = await locator?.getLocation({
+      savedObjectId: 'xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx',
+      pageNumber: 21,
+      showFlyout: true,
+    });
+
+    expect(location).toEqual({
+      app: 'test_app',
+      route: '/my-object/xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx?page=21',
+      state: { isFlyoutOpen: true },
+    });
+  });
+
+  describe('.navigate()', () => {
+    test('throws if navigation method is not implemented', async () => {
+      const {
+        service: { locators },
+      } = urlServiceTestSetup();
+      const locator = locators.create(testLocator);
+      const [, error] = await of(
+        locator.navigate({
+          pageNumber: 1,
+          savedObjectId: 'xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx',
+          showFlyout: false,
+        })
+      );
+
+      expect(error).toBeInstanceOf(Error);
+      expect(error.message).toBe('not implemented');
+    });
+
+    test('navigates user when .navigate() method is called', async () => {
+      const {
+        service: { locators },
+        deps,
+      } = urlServiceTestSetup({
+        navigate: jest.fn(async () => {}),
+      });
+      const locator = locators.create(testLocator);
+      const [, error] = await of(
+        locator.navigate({
+          pageNumber: 1,
+          savedObjectId: 'xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx',
+          showFlyout: false,
+        })
+      );
+
+      expect(error).toBe(undefined);
+      expect(deps.navigate).toHaveBeenCalledTimes(1);
+      expect(deps.navigate).toHaveBeenCalledWith(
+        {
+          app: 'test_app',
+          route: '/my-object/xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx?page=1',
+          state: {
+            isFlyoutOpen: false,
+          },
+        },
+        { replace: false }
+      );
+    });
+
+    test('can specify "replace" navigation parameter', async () => {
+      const {
+        service: { locators },
+        deps,
+      } = urlServiceTestSetup({
+        navigate: jest.fn(async () => {}),
+      });
+      const locator = locators.create(testLocator);
+
+      await locator.navigate(
+        {
+          pageNumber: 1,
+          savedObjectId: 'xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx',
+          showFlyout: false,
+        },
+        {
+          replace: false,
+        }
+      );
+
+      expect(deps.navigate).toHaveBeenCalledTimes(1);
+      expect(deps.navigate).toHaveBeenCalledWith(
+        {
+          app: 'test_app',
+          route: '/my-object/xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx?page=1',
+          state: {
+            isFlyoutOpen: false,
+          },
+        },
+        { replace: false }
+      );
+
+      await locator.navigate(
+        {
+          pageNumber: 2,
+          savedObjectId: 'xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx',
+          showFlyout: false,
+        },
+        {
+          replace: true,
+        }
+      );
+
+      expect(deps.navigate).toHaveBeenCalledTimes(2);
+      expect(deps.navigate).toHaveBeenCalledWith(
+        {
+          app: 'test_app',
+          route: '/my-object/xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx?page=2',
+          state: {
+            isFlyoutOpen: false,
+          },
+        },
+        { replace: true }
+      );
+    });
+  });
+});

src/plugins/share/common/url_service/__tests__/setup.ts

@@ -0,0 +1,42 @@
+/*
+ * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
+ * or more contributor license agreements. Licensed under the Elastic License
+ * 2.0 and the Server Side Public License, v 1; you may not use this file except
+ * in compliance with, at your election, the Elastic License 2.0 or the Server
+ * Side Public License, v 1.
+ */
+
+import type { SerializableState } from 'src/plugins/kibana_utils/common';
+import { LocatorDefinition } from '../locators';
+import { UrlService, UrlServiceDependencies } from '../url_service';
+
+export interface TestLocatorState extends SerializableState {
+  savedObjectId: string;
+  showFlyout: boolean;
+  pageNumber: number;
+}
+
+export const testLocator: LocatorDefinition<TestLocatorState> = {
+  id: 'TEST_LOCATOR',
+  getLocation: async ({ savedObjectId, pageNumber, showFlyout }) => {
+    return {
+      app: 'test_app',
+      route: `/my-object/${savedObjectId}?page=${pageNumber}`,
+      state: {
+        isFlyoutOpen: showFlyout,
+      },
+    };
+  },
+};
+
+export const urlServiceTestSetup = (partialDeps: Partial<UrlServiceDependencies> = {}) => {
+  const deps: UrlServiceDependencies = {
+    navigate: async () => {
+      throw new Error('not implemented');
+    },
+    ...partialDeps,
+  };
+  const service = new UrlService(deps);
+
+  return { service, deps };
+};

src/plugins/share/common/url_service/index.ts

@@ -0,0 +1,10 @@
+/*
+ * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
+ * or more contributor license agreements. Licensed under the Elastic License
+ * 2.0 and the Server Side Public License, v 1; you may not use this file except
+ * in compliance with, at your election, the Elastic License 2.0 or the Server
+ * Side Public License, v 1.
+ */
+
+export * from './url_service';
+export * from './locators';

src/plugins/share/common/url_service/locators/index.ts

@@ -0,0 +1,11 @@
+/*
+ * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
+ * or more contributor license agreements. Licensed under the Elastic License
+ * 2.0 and the Server Side Public License, v 1; you may not use this file except
+ * in compliance with, at your election, the Elastic License 2.0 or the Server
+ * Side Public License, v 1.
+ */
+
+export * from './types';
+export * from './locator';
+export * from './locator_client';

src/plugins/share/common/url_service/locators/locator.ts

@@ -0,0 +1,69 @@
+/*
+ * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
+ * or more contributor license agreements. Licensed under the Elastic License
+ * 2.0 and the Server Side Public License, v 1; you may not use this file except
+ * in compliance with, at your election, the Elastic License 2.0 or the Server
+ * Side Public License, v 1.
+ */
+
+import type { SavedObjectReference } from 'kibana/server';
+import type { PersistableState, SerializableState } from 'src/plugins/kibana_utils/common';
+import type {
+  LocatorDefinition,
+  LocatorPublic,
+  KibanaLocation,
+  LocatorNavigationParams,
+} from './types';
+
+export interface LocatorDependencies {
+  navigate: (location: KibanaLocation, params?: LocatorNavigationParams) => Promise<void>;
+}
+
+export class Locator<P extends SerializableState> implements PersistableState<P>, LocatorPublic<P> {
+  public readonly migrations: PersistableState<P>['migrations'];
+
+  constructor(
+    public readonly definition: LocatorDefinition<P>,
+    protected readonly deps: LocatorDependencies
+  ) {
+    this.migrations = definition.migrations || {};
+  }
+
+  // PersistableState<P> -------------------------------------------------------
+
+  public readonly telemetry: PersistableState<P>['telemetry'] = (
+    state: P,
+    stats: Record<string, any>
+  ): Record<string, any> => {
+    return this.definition.telemetry ? this.definition.telemetry(state, stats) : stats;
+  };
+
+  public readonly inject: PersistableState<P>['inject'] = (
+    state: P,
+    references: SavedObjectReference[]
+  ): P => {
+    return this.definition.inject ? this.definition.inject(state, references) : state;
+  };
+
+  public readonly extract: PersistableState<P>['extract'] = (
+    state: P
+  ): { state: P; references: SavedObjectReference[] } => {
+    return this.definition.extract ? this.definition.extract(state) : { state, references: [] };
+  };
+
+  // LocatorPublic<P> ----------------------------------------------------------
+
+  public async getLocation(params: P): Promise<KibanaLocation> {
+    return await this.definition.getLocation(params);
+  }
+
+  public async navigate(
+    params: P,
+    { replace = false }: LocatorNavigationParams = {}
+  ): Promise<void> {
+    const location = await this.getLocation(params);
+    await this.deps.navigate(location, {
+      replace,
+    });
+  }
+}

src/plugins/share/common/url_service/locators/locator_client.ts

@@ -0,0 +1,47 @@
+/*
+ * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
+ * or more contributor license agreements. Licensed under the Elastic License
+ * 2.0 and the Server Side Public License, v 1; you may not use this file except
+ * in compliance with, at your election, the Elastic License 2.0 or the Server
+ * Side Public License, v 1.
+ */
+
+import type { SerializableState } from 'src/plugins/kibana_utils/common';
+import type { LocatorDependencies } from './locator';
+import type { LocatorDefinition, LocatorPublic, ILocatorClient } from './types';
+import { Locator } from './locator';
+
+export type LocatorClientDependencies = LocatorDependencies;
+
+export class LocatorClient implements ILocatorClient {
+  /**
+   * Collection of registered locators.
+   */
+  protected locators: Map<string, Locator<any>> = new Map();
+
+  constructor(protected readonly deps: LocatorClientDependencies) {}
+
+  /**
+   * Creates and register a URL locator.
+   *
+   * @param definition A definition of URL locator.
+   * @returns A public interface of URL locator.
+   */
+  public create<P extends SerializableState>(definition: LocatorDefinition<P>): LocatorPublic<P> {
+    const locator = new Locator<P>(definition, this.deps);
+
+    this.locators.set(definition.id, locator);
+
+    return locator;
+  }
+
+  /**
+   * Returns a previously registered URL locator.
+   *
+   * @param id ID of a URL locator.
+   * @returns A public interface of a registered URL locator.
+   */
+  public get<P>(id: string): undefined | LocatorPublic<P> {
+    return this.locators.get(id);
+  }
+}