Disable creating alert client instances when ESO plugin is using an ephemeral encryption key

x-pack/legacy/plugins/alerting/server/index.ts

@@ -4,7 +4,10 @@
  * you may not use this file except in compliance with the Elastic License.
  */
 
+import { AlertsClient as AlertsClientClass } from './alerts_client';
+
+export type AlertsClient = PublicMethodsOf<AlertsClientClass>;
+
 export { init } from './init';
 export { AlertType, AlertingPlugin, AlertExecutorOptions } from './types';
-export { AlertsClient } from './alerts_client';
 export { PluginSetupContract, PluginStartContract } from './plugin';

x-pack/legacy/plugins/alerting/server/plugin.test.ts

@@ -0,0 +1,113 @@
+/*
+ * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
+ * or more contributor license agreements. Licensed under the Elastic License;
+ * you may not use this file except in compliance with the Elastic License.
+ */
+
+import { Plugin } from './plugin';
+import { coreMock } from '../../../../../src/core/server/mocks';
+import { licensingMock } from '../../../../plugins/licensing/server/mocks';
+import { encryptedSavedObjectsMock } from '../../../../plugins/encrypted_saved_objects/server/mocks';
+
+describe('Alerting Plugin', () => {
+  describe('start()', () => {
+    /**
+     * HACK: This test has put together to ensuire the function "getAlertsClientWithRequest"
+     * throws when needed. There's a lot of blockers for writing a proper test like
+     * misisng plugin start/setup mocks for taskManager and actions plugin, core.http.route
+     * is actually not a function in Kibana Platform, etc. This test contains what is needed
+     * to get to the necessary function within start().
+     */
+    describe('getAlertsClientWithRequest()', () => {
+      it('throws error when encryptedSavedObjects plugin has usingEphemeralEncryptionKey set to true', async () => {
+        const context = coreMock.createPluginInitializerContext();
+        const plugin = new Plugin(context);
+
+        const coreSetup = coreMock.createSetup();
+        const encryptedSavedObjectsSetup = encryptedSavedObjectsMock.createSetup();
+        await plugin.setup(
+          {
+            ...coreSetup,
+            http: {
+              ...coreSetup.http,
+              route: jest.fn(),
+            },
+          } as any,
+          {
+            licensing: licensingMock.createSetup(),
+            encryptedSavedObjects: encryptedSavedObjectsSetup,
+          } as any
+        );
+
+        const startContract = plugin.start(
+          coreMock.createStart() as any,
+          {
+            actions: {
+              execute: jest.fn(),
+              getActionsClientWithRequest: jest.fn(),
+            },
+          } as any
+        );
+
+        expect(encryptedSavedObjectsSetup.usingEphemeralEncryptionKey).toEqual(true);
+        expect(() =>
+          startContract.getAlertsClientWithRequest({} as any)
+        ).toThrowErrorMatchingInlineSnapshot(
+          `"Unable to create alerts client due to the Encrypted Saved Objects plugin using an ephemeral encryption key. Please set xpack.encryptedSavedObjects.encryptionKey in kibana.yml"`
+        );
+      });
+
+      it(`doesn't throw error when encryptedSavedObjects plugin has usingEphemeralEncryptionKey set to false`, async () => {
+        const context = coreMock.createPluginInitializerContext();
+        const plugin = new Plugin(context);
+
+        const coreSetup = coreMock.createSetup();
+        const encryptedSavedObjectsSetup = {
+          ...encryptedSavedObjectsMock.createSetup(),
+          usingEphemeralEncryptionKey: false,
+        };
+        await plugin.setup(
+          {
+            ...coreSetup,
+            http: {
+              ...coreSetup.http,
+              route: jest.fn(),
+            },
+          } as any,
+          {
+            licensing: licensingMock.createSetup(),
+            encryptedSavedObjects: encryptedSavedObjectsSetup,
+          } as any
+        );
+
+        const startContract = plugin.start(
+          coreMock.createStart() as any,
+          {
+            actions: {
+              execute: jest.fn(),
+              getActionsClientWithRequest: jest.fn(),
+            },
+            spaces: () => null,
+          } as any
+        );
+
+        const fakeRequest = {
+          headers: {},
+          getBasePath: () => '',
+          path: '/',
+          route: { settings: {} },
+          url: {
+            href: '/',
+          },
+          raw: {
+            req: {
+              url: '/',
+            },
+          },
+          getSavedObjectsClient: jest.fn(),
+        };
+        await startContract.getAlertsClientWithRequest(fakeRequest as any);
+      });
+    });
+  });
+});

x-pack/legacy/plugins/alerting/server/plugin.ts

@@ -42,7 +42,7 @@ export interface PluginSetupContract {
 }
 export interface PluginStartContract {
   listTypes: AlertTypeRegistry['list'];
-  getAlertsClientWithRequest(request: Hapi.Request): AlertsClient;
+  getAlertsClientWithRequest(request: Hapi.Request): PublicMethodsOf<AlertsClient>;
 }
 
 export class Plugin {
@@ -52,6 +52,7 @@ export class Plugin {
   private adminClient?: IClusterClient;
   private serverBasePath?: string;
   private licenseState: LicenseState | null = null;
+  private isESOUsingEphemeralEncryptionKey?: boolean;
 
   constructor(initializerContext: AlertingPluginInitializerContext) {
     this.logger = initializerContext.logger.get('plugins', 'alerting');
@@ -63,8 +64,9 @@ export class Plugin {
     plugins: AlertingPluginsSetup
   ): Promise<PluginSetupContract> {
     this.adminClient = core.elasticsearch.adminClient;
-
     this.licenseState = new LicenseState(plugins.licensing.license$);
+    this.isESOUsingEphemeralEncryptionKey =
+      plugins.encryptedSavedObjects.usingEphemeralEncryptionKey;
 
     // Encrypted attributes
     plugins.encryptedSavedObjects.registerType({
@@ -106,7 +108,7 @@ export class Plugin {
   }
 
   public start(core: AlertingCoreStart, plugins: AlertingPluginsStart): PluginStartContract {
-    const { adminClient, serverBasePath } = this;
+    const { adminClient, serverBasePath, isESOUsingEphemeralEncryptionKey } = this;
 
     function spaceIdToNamespace(spaceId?: string): string | undefined {
       const spacesPlugin = plugins.spaces();
@@ -147,8 +149,14 @@ export class Plugin {
 
     return {
       listTypes: this.alertTypeRegistry!.list.bind(this.alertTypeRegistry!),
-      getAlertsClientWithRequest: (request: Hapi.Request) =>
-        alertsClientFactory!.create(KibanaRequest.from(request), request),
+      getAlertsClientWithRequest: (request: Hapi.Request) => {
+        if (isESOUsingEphemeralEncryptionKey === true) {
+          throw new Error(
+            `Unable to create alerts client due to the Encrypted Saved Objects plugin using an ephemeral encryption key. Please set xpack.encryptedSavedObjects.encryptionKey in kibana.yml`
+          );
+        }
+        return alertsClientFactory!.create(KibanaRequest.from(request), request);
+      },
     };
   }
 

x-pack/legacy/plugins/siem/server/lib/detection_engine/rules/types.ts

@@ -14,7 +14,7 @@ import {
   SavedObjectsClientContract,
 } from 'kibana/server';
 import { SIGNALS_ID } from '../../../../common/constants';
-import { AlertsClient } from '../../../../../alerting/server/alerts_client';
+import { AlertsClient } from '../../../../../alerting/server';
 import { ActionsClient } from '../../../../../../../plugins/actions/server';
 import { RuleAlertParams, RuleTypeParams, RuleAlertParamsRest } from '../types';
 import { RequestFacade } from '../../../types';