Plugins: Share the plugin context with apps and ui-extensions (#77933)

* feat: share the plugin context with app plugins

* feat: share the plugin context ui-extension modals

* feat: pre-fetch the app plugin settings

* feat: expose more utility hooks for plugins

* fix: use `location.pathname` directly

Previously it was referenced by `pluginRoot.props.path`, which stops
working in case the `pluginRoot` element is wrapped with anything.

packages/grafana-data/src/context/plugins/usePluginContext.tsx

@@ -1,5 +1,7 @@
 import { useContext } from 'react';
 
+import { PluginMeta } from '../../types';
+
 import { Context, PluginContextType } from './PluginContext';
 
 export function usePluginContext(): PluginContextType {
@@ -9,3 +11,21 @@ export function usePluginContext(): PluginContextType {
   }
   return context;
 }
+
+export function usePluginMeta(): PluginMeta {
+  const context = usePluginContext();
+
+  return context.meta;
+}
+
+export function usePluginJsonData() {
+  const context = usePluginContext();
+
+  return context.meta.jsonData;
+}
+
+export function usePluginVersion() {
+  const context = usePluginContext();
+
+  return context.meta.info.version;
+}

public/app/features/plugins/components/AppRootPage.tsx

@@ -3,7 +3,16 @@ import { AnyAction, createSlice, PayloadAction } from '@reduxjs/toolkit';
 import React, { useCallback, useEffect, useMemo, useReducer } from 'react';
 import { useLocation, useRouteMatch } from 'react-router-dom';
 
-import { AppEvents, AppPlugin, AppPluginMeta, NavModel, NavModelItem, OrgRole, PluginType } from '@grafana/data';
+import {
+  AppEvents,
+  AppPlugin,
+  AppPluginMeta,
+  NavModel,
+  NavModelItem,
+  OrgRole,
+  PluginType,
+  PluginContextProvider,
+} from '@grafana/data';
 import { config, locationSearchToObject } from '@grafana/runtime';
 import { Alert } from '@grafana/ui';
 import { Page } from 'app/core/components/Page/Page';
@@ -76,13 +85,15 @@ export function AppRootPage({ pluginId, pluginNavSection }: Props) {
   }
 
   const pluginRoot = plugin.root && (
-    <plugin.root
-      meta={plugin.meta}
-      basename={match.url}
-      onNavChanged={onNavChanged}
-      query={queryParams}
-      path={location.pathname}
-    />
+    <PluginContextProvider meta={plugin.meta}>
+      <plugin.root
+        meta={plugin.meta}
+        basename={match.url}
+        onNavChanged={onNavChanged}
+        query={queryParams}
+        path={location.pathname}
+      />
+    </PluginContextProvider>
   );
 
   // Because of the fallback at plugin routes, we need to check
@@ -93,7 +104,7 @@ export function AppRootPage({ pluginId, pluginNavSection }: Props) {
       return true;
     }
 
-    const pluginInclude = plugin.meta?.includes.find((include) => include.path === pluginRoot.props.path);
+    const pluginInclude = plugin.meta?.includes.find((include) => include.path === location.pathname);
     // Check if include configuration contains current path
     if (!pluginInclude) {
       return true;

public/app/features/plugins/extensions/getPluginExtensions.ts

@@ -189,7 +189,7 @@ function getLinkExtensionOnClick(
         category: config.category,
       });
 
-      const result = onClick(event, getEventHelpers(context));
+      const result = onClick(event, getEventHelpers(pluginId, context));
 
       if (isPromise(result)) {
         result.catch((e) => {

public/app/features/plugins/extensions/utils.test.tsx

@@ -2,12 +2,17 @@ import { render, screen } from '@testing-library/react';
 import React from 'react';
 import { type Unsubscribable } from 'rxjs';
 
-import { type PluginExtensionLinkConfig, PluginExtensionTypes, dateTime } from '@grafana/data';
+import { type PluginExtensionLinkConfig, PluginExtensionTypes, dateTime, usePluginContext } from '@grafana/data';
 import appEvents from 'app/core/app_events';
 import { ShowModalReactEvent } from 'app/types/events';
 
 import { deepFreeze, isPluginExtensionLinkConfig, handleErrorsInFn, getReadOnlyProxy, getEventHelpers } from './utils';
 
+jest.mock('app/features/plugins/pluginSettings', () => ({
+  ...jest.requireActual('app/features/plugins/pluginSettings'),
+  getPluginSettings: () => Promise.resolve({ info: { version: '1.0.0' } }),
+}));
+
 describe('Plugin Extensions / Utils', () => {
   describe('deepFreeze()', () => {
     test('should not fail when called with primitive values', () => {
@@ -341,27 +346,29 @@ describe('Plugin Extensions / Utils', () => {
       });
 
       it('should open modal with provided title and body', async () => {
-        const { openModal } = getEventHelpers();
+        const pluginId = 'grafana-worldmap-panel';
+        const { openModal } = getEventHelpers(pluginId);
 
         openModal({
           title: 'Title in modal',
           body: () => <div>Text in body</div>,
         });
 
-        expect(screen.getByRole('dialog')).toBeVisible();
+        expect(await screen.findByRole('dialog')).toBeVisible();
         expect(screen.getByRole('heading')).toHaveTextContent('Title in modal');
         expect(screen.getByText('Text in body')).toBeVisible();
       });
 
       it('should open modal with default width if not specified', async () => {
-        const { openModal } = getEventHelpers();
+        const pluginId = 'grafana-worldmap-panel';
+        const { openModal } = getEventHelpers(pluginId);
 
         openModal({
           title: 'Title in modal',
           body: () => <div>Text in body</div>,
         });
 
-        const modal = screen.getByRole('dialog');
+        const modal = await screen.findByRole('dialog');
         const style = window.getComputedStyle(modal);
 
         expect(style.width).toBe('750px');
@@ -369,7 +376,8 @@ describe('Plugin Extensions / Utils', () => {
       });
 
       it('should open modal with specified width', async () => {
-        const { openModal } = getEventHelpers();
+        const pluginId = 'grafana-worldmap-panel';
+        const { openModal } = getEventHelpers(pluginId);
 
         openModal({
           title: 'Title in modal',
@@ -377,14 +385,15 @@ describe('Plugin Extensions / Utils', () => {
           width: '70%',
         });
 
-        const modal = screen.getByRole('dialog');
+        const modal = await screen.findByRole('dialog');
         const style = window.getComputedStyle(modal);
 
         expect(style.width).toBe('70%');
       });
 
       it('should open modal with specified height', async () => {
-        const { openModal } = getEventHelpers();
+        const pluginId = 'grafana-worldmap-panel';
+        const { openModal } = getEventHelpers(pluginId);
 
         openModal({
           title: 'Title in modal',
@@ -392,17 +401,37 @@ describe('Plugin Extensions / Utils', () => {
           height: 600,
         });
 
-        const modal = screen.getByRole('dialog');
+        const modal = await screen.findByRole('dialog');
         const style = window.getComputedStyle(modal);
 
         expect(style.height).toBe('600px');
       });
+
+      it('should open modal with the plugin context being available', async () => {
+        const pluginId = 'grafana-worldmap-panel';
+        const { openModal } = getEventHelpers(pluginId);
+
+        const ModalContent = () => {
+          const context = usePluginContext();
+
+          return <div>Version: {context.meta.info.version}</div>;
+        };
+
+        openModal({
+          title: 'Title in modal',
+          body: ModalContent,
+        });
+
+        const modal = await screen.findByRole('dialog');
+        expect(modal).toHaveTextContent('Version: 1.0.0');
+      });
     });
 
     describe('context', () => {
       it('should return same object as passed to getEventHelpers', () => {
+        const pluginId = 'grafana-worldmap-panel';
         const source = {};
-        const { context } = getEventHelpers(source);
+        const { context } = getEventHelpers(pluginId, source);
         expect(context).toBe(source);
       });
     });

public/app/features/plugins/extensions/utils.tsx

@@ -11,9 +11,12 @@ import {
   type PluginExtensionOpenModalOptions,
   isDateTime,
   dateTime,
+  PluginContextProvider,
+  PluginMeta,
 } from '@grafana/data';
 import { Modal } from '@grafana/ui';
 import appEvents from 'app/core/app_events';
+import { getPluginSettings } from 'app/features/plugins/pluginSettings';
 import { ShowModalReactEvent } from 'app/types/events';
 
 export function logWarning(message: string) {
@@ -45,13 +48,14 @@ export function handleErrorsInFn(fn: Function, errorMessagePrefix = '') {
 }
 
 // Event helpers are designed to make it easier to trigger "core actions" from an extension event handler, e.g. opening a modal or showing a notification.
-export function getEventHelpers(context?: Readonly<object>): PluginExtensionEventHelpers {
-  const openModal: PluginExtensionEventHelpers['openModal'] = (options) => {
+export function getEventHelpers(pluginId: string, context?: Readonly<object>): PluginExtensionEventHelpers {
+  const openModal: PluginExtensionEventHelpers['openModal'] = async (options) => {
     const { title, body, width, height } = options;
+    const pluginMeta = await getPluginSettings(pluginId);
 
     appEvents.publish(
       new ShowModalReactEvent({
-        component: getModalWrapper({ title, body, width, height }),
+        component: getModalWrapper({ title, body, width, height, pluginMeta }),
       })
     );
   };
@@ -72,14 +76,17 @@ const getModalWrapper = ({
   body: Body,
   width,
   height,
-}: PluginExtensionOpenModalOptions) => {
+  pluginMeta,
+}: { pluginMeta: PluginMeta } & PluginExtensionOpenModalOptions) => {
   const className = css({ width, height });
 
   const ModalWrapper = ({ onDismiss }: ModalWrapperProps) => {
     return (
-      <Modal title={title} className={className} isOpen onDismiss={onDismiss} onClickBackdrop={onDismiss}>
-        <Body onDismiss={onDismiss} />
-      </Modal>
+      <PluginContextProvider meta={pluginMeta}>
+        <Modal title={title} className={className} isOpen onDismiss={onDismiss} onClickBackdrop={onDismiss}>
+          <Body onDismiss={onDismiss} />
+        </Modal>
+      </PluginContextProvider>
     );
   };
 

public/app/features/plugins/pluginPreloader.ts

@@ -1,6 +1,7 @@
 import type { PluginExtensionConfig } from '@grafana/data';
 import type { AppPluginConfig } from '@grafana/runtime';
 import { startMeasure, stopMeasure } from 'app/core/utils/metrics';
+import { getPluginSettings } from 'app/features/plugins/pluginSettings';
 
 import * as pluginLoader from './plugin_loader';
 
@@ -29,6 +30,11 @@ async function preload(config: AppPluginConfig): Promise<PluginPreloadResult> {
       pluginId,
     });
     const { extensionConfigs = [] } = plugin;
+
+    // Fetching meta-information for the preloaded app plugin and caching it for later.
+    // (The function below returns a promise, but it's not awaited for a reason: we don't want to block the preload process, we would only like to cache the result for later.)
+    getPluginSettings(pluginId);
+
     return { pluginId, extensionConfigs };
   } catch (error) {
     console.error(`[Plugins] Failed to preload plugin: ${path} (version: ${version})`, error);