[Actions] Fixed ad-hoc actions tasks remain as "running" when they timeout by adding cancellation support

x-pack/plugins/actions/server/lib/task_runner_factory.test.ts

@@ -236,6 +236,17 @@ test('cleans up action_task_params object', async () => {
   expect(services.savedObjectsClient.delete).toHaveBeenCalledWith('action_task_params', '3');
 });
 
+test('task runner should implement CancellableTask cancel method with logging warning message', async () => {
+  const taskRunner = taskRunnerFactory.create({
+    taskInstance: mockedTaskInstance,
+  });
+
+  await taskRunner.cancel();
+  expect(taskRunnerFactoryInitializerParams.logger.warn).toHaveBeenCalledWith(
+    `Action task with params '{"actionTaskParamsId":"3","spaceId":"test"}' was cancelled due to the timeout.`
+  );
+});
+
 test('runs successfully when cleanup fails and logs the error', async () => {
   const taskRunner = taskRunnerFactory.create({
     taskInstance: mockedTaskInstance,

x-pack/plugins/actions/server/lib/task_runner_factory.ts

@@ -9,6 +9,7 @@ import { pick } from 'lodash';
 import type { Request } from '@hapi/hapi';
 import { pipe } from 'fp-ts/lib/pipeable';
 import { map, fromNullable, getOrElse } from 'fp-ts/lib/Option';
+import stringify from 'json-stable-stringify';
 import { addSpaceIdToPath } from '../../../spaces/server';
 import {
   Logger,
@@ -193,6 +194,14 @@ export class TaskRunnerFactory {
           }
         }
       },
+      cancel: async () => {
+        logger.warn(
+          `Action task with params '${stringify(
+            taskInstance.params as ActionTaskExecutorParams
+          )}' was cancelled due to the timeout.`
+        );
+        return { state: {} };
+      },
     };
   }
 }