feat(core): Offload manual executions to workers (#11284)

packages/@n8n/config/src/configs/logging.config.ts

@@ -9,6 +9,7 @@ export const LOG_SCOPES = [
 	'multi-main-setup',
 	'pruning',
 	'pubsub',
+	'push',
 	'redis',
 	'scaling',
 	'waiting-executions',
@@ -70,10 +71,13 @@ export class LoggingConfig {
 	 * - `external-secrets`
 	 * - `license`
 	 * - `multi-main-setup`
+	 * - `pruning`
 	 * - `pubsub`
+	 * - `push`
 	 * - `redis`
 	 * - `scaling`
 	 * - `waiting-executions`
+	 * - `task-runner`
 	 *
 	 * @example
 	 * `N8N_LOG_SCOPES=license`

packages/cli/src/constants.ts

@@ -1,6 +1,7 @@
 import { readFileSync } from 'fs';
 import type { n8n } from 'n8n-core';
-import { jsonParse } from 'n8n-workflow';
+import type { ITaskDataConnections } from 'n8n-workflow';
+import { jsonParse, TRIMMED_TASK_DATA_CONNECTIONS_KEY } from 'n8n-workflow';
 import { resolve, join, dirname } from 'path';
 
 const { NODE_ENV, E2E_TESTS } = process.env;
@@ -161,6 +162,22 @@ export const ARTIFICIAL_TASK_DATA = {
 	],
 };
 
+/**
+ * Connections for an item standing in for a manual execution data item too
+ * large to be sent live via pubsub. This signals to the client to direct the
+ * user to the execution history.
+ */
+export const TRIMMED_TASK_DATA_CONNECTIONS: ITaskDataConnections = {
+	main: [
+		[
+			{
+				json: { [TRIMMED_TASK_DATA_CONNECTIONS_KEY]: true },
+				pairedItem: undefined,
+			},
+		],
+	],
+};
+
 /** Lowest priority, meaning shut down happens after other groups */
 export const LOWEST_SHUTDOWN_PRIORITY = 0;
 export const DEFAULT_SHUTDOWN_PRIORITY = 100;

packages/cli/src/executions/__tests__/execution.service.test.ts

@@ -183,7 +183,7 @@ describe('ExecutionService', () => {
 
 		describe('scaling mode', () => {
 			describe('manual execution', () => {
-				it('should delegate to regular mode in scaling mode', async () => {
+				it('should stop a `running` execution in scaling mode', async () => {
 					/**
 					 * Arrange
 					 */
@@ -197,6 +197,8 @@ describe('ExecutionService', () => {
 					concurrencyControl.has.mockReturnValue(false);
 					activeExecutions.has.mockReturnValue(true);
 					waitTracker.has.mockReturnValue(false);
+					const job = mock<Job>({ data: { executionId: '123' } });
+					scalingService.findJobsByStatus.mockResolvedValue([job]);
 					executionRepository.stopDuringRun.mockResolvedValue(mock<IExecutionResponse>());
 					// @ts-expect-error Private method
 					const stopInRegularModeSpy = jest.spyOn(executionService, 'stopInRegularMode');
@@ -209,7 +211,7 @@ describe('ExecutionService', () => {
 					/**
 					 * Assert
 					 */
-					expect(stopInRegularModeSpy).toHaveBeenCalledWith(execution);
+					expect(stopInRegularModeSpy).not.toHaveBeenCalled();
 					expect(activeExecutions.stopExecution).toHaveBeenCalledWith(execution.id);
 					expect(executionRepository.stopDuringRun).toHaveBeenCalledWith(execution);
 

packages/cli/src/executions/execution.service.ts

@@ -464,11 +464,6 @@ export class ExecutionService {
 	}
 
 	private async stopInScalingMode(execution: IExecutionResponse) {
-		if (execution.mode === 'manual') {
-			// manual executions in scaling mode are processed by main
-			return await this.stopInRegularMode(execution);
-		}
-
 		if (this.activeExecutions.has(execution.id)) {
 			this.activeExecutions.stopExecution(execution.id);
 		}

packages/cli/src/push/__tests__/index.test.ts

@@ -20,7 +20,7 @@ describe('Push', () => {
 
 	test('should validate pushRef on requests for websocket backend', () => {
 		config.set('push.backend', 'websocket');
-		const push = new Push(mock(), mock());
+		const push = new Push(mock(), mock(), mock());
 		const ws = mock<WebSocket>();
 		const request = mock<WebSocketPushRequest>({ user, ws });
 		request.query = { pushRef: '' };
@@ -33,7 +33,7 @@ describe('Push', () => {
 
 	test('should validate pushRef on requests for SSE backend', () => {
 		config.set('push.backend', 'sse');
-		const push = new Push(mock(), mock());
+		const push = new Push(mock(), mock(), mock());
 		const request = mock<SSEPushRequest>({ user, ws: undefined });
 		request.query = { pushRef: '' };
 		expect(() => push.handleRequest(request, mock())).toThrow(BadRequestError);

packages/cli/src/push/index.ts

@@ -2,7 +2,8 @@ import type { PushMessage } from '@n8n/api-types';
 import type { Application } from 'express';
 import { ServerResponse } from 'http';
 import type { Server } from 'http';
-import { InstanceSettings } from 'n8n-core';
+import { InstanceSettings, Logger } from 'n8n-core';
+import { deepCopy } from 'n8n-workflow';
 import type { Socket } from 'net';
 import { Container, Service } from 'typedi';
 import { parse as parseUrl } from 'url';
@@ -10,6 +11,7 @@ import { Server as WSServer } from 'ws';
 
 import { AuthService } from '@/auth/auth.service';
 import config from '@/config';
+import { TRIMMED_TASK_DATA_CONNECTIONS } from '@/constants';
 import type { User } from '@/databases/entities/user';
 import { OnShutdown } from '@/decorators/on-shutdown';
 import { BadRequestError } from '@/errors/response-errors/bad-request.error';
@@ -27,6 +29,12 @@ type PushEvents = {
 
 const useWebSockets = config.getEnv('push.backend') === 'websocket';
 
+/**
+ * Max allowed size of a push message in bytes. Events going through the pubsub
+ * channel are trimmed if exceeding this size.
+ */
+const MAX_PAYLOAD_SIZE_BYTES = 5 * 1024 * 1024; // 5 MiB
+
 /**
  * Push service for uni- or bi-directional communication with frontend clients.
  * Uses either server-sent events (SSE, unidirectional from backend --> frontend)
@@ -43,8 +51,10 @@ export class Push extends TypedEmitter<PushEvents> {
 	constructor(
 		private readonly instanceSettings: InstanceSettings,
 		private readonly publisher: Publisher,
+		private readonly logger: Logger,
 	) {
 		super();
+		this.logger = this.logger.scoped('push');
 
 		if (useWebSockets) this.backend.on('message', (msg) => this.emit('message', msg));
 	}
@@ -85,18 +95,14 @@ export class Push extends TypedEmitter<PushEvents> {
 		this.backend.sendToAll(pushMsg);
 	}
 
+	/** Returns whether a given push ref is registered. */
+	hasPushRef(pushRef: string) {
+		return this.backend.hasPushRef(pushRef);
+	}
+
 	send(pushMsg: PushMessage, pushRef: string) {
-		/**
+		if (this.shouldRelayViaPubSub(pushRef)) {
-		 * Multi-main setup: In a manual webhook execution, the main process that
+			this.relayViaPubSub(pushMsg, pushRef);
-		 * handles a webhook might not be the same as the main process that created
-		 * the webhook. If so, the handler process commands the creator process to
-		 * relay the former's execution lifecycle events to the creator's frontend.
-		 */
-		if (this.instanceSettings.isMultiMain && !this.backend.hasPushRef(pushRef)) {
-			void this.publisher.publishCommand({
-				command: 'relay-execution-lifecycle-event',
-				payload: { ...pushMsg, pushRef },
-			});
 			return;
 		}
 
@@ -111,6 +117,66 @@ export class Push extends TypedEmitter<PushEvents> {
 	onShutdown() {
 		this.backend.closeAllConnections();
 	}
+
+	/**
+	 * Whether to relay a push message via pubsub channel to other instances,
+	 * instead of pushing the message directly to the frontend.
+	 *
+	 * This is needed in two scenarios:
+	 *
+	 * In scaling mode, in single- or multi-main setup, in a manual execution, a
+	 * worker has no connection to a frontend and so relays to all mains lifecycle
+	 * events for manual executions. Only the main who holds the session for the
+	 * execution will push to the frontend who commissioned the execution.
+	 *
+	 * In scaling mode, in multi-main setup, in a manual webhook execution, if
+	 * the main who handles a webhook is not the main who created the webhook,
+	 * the handler main relays execution lifecycle events to all mains. Only
+	 * the main who holds the session for the execution will push events to
+	 * the frontend who commissioned the execution.
+	 */
+	private shouldRelayViaPubSub(pushRef: string) {
+		const { isWorker, isMultiMain } = this.instanceSettings;
+
+		return isWorker || (isMultiMain && !this.hasPushRef(pushRef));
+	}
+
+	/**
+	 * Relay a push message via the `n8n.commands` pubsub channel,
+	 * reducing the payload size if too large.
+	 *
+	 * See {@link shouldRelayViaPubSub} for more details.
+	 */
+	private relayViaPubSub(pushMsg: PushMessage, pushRef: string) {
+		const eventSizeBytes = new TextEncoder().encode(JSON.stringify(pushMsg.data)).length;
+
+		if (eventSizeBytes <= MAX_PAYLOAD_SIZE_BYTES) {
+			void this.publisher.publishCommand({
+				command: 'relay-execution-lifecycle-event',
+				payload: { ...pushMsg, pushRef },
+			});
+			return;
+		}
+
+		// too large for pubsub channel, trim it
+
+		const pushMsgCopy = deepCopy(pushMsg);
+
+		const toMb = (bytes: number) => (bytes / (1024 * 1024)).toFixed(0);
+		const eventMb = toMb(eventSizeBytes);
+		const maxMb = toMb(MAX_PAYLOAD_SIZE_BYTES);
+		const { type } = pushMsgCopy;
+
+		this.logger.warn(`Size of "${type}" (${eventMb} MB) exceeds max size ${maxMb} MB. Trimming...`);
+
+		if (type === 'nodeExecuteAfter') pushMsgCopy.data.data.data = TRIMMED_TASK_DATA_CONNECTIONS;
+		else if (type === 'executionFinished') pushMsgCopy.data.rawData = ''; // prompt client to fetch from DB
+
+		void this.publisher.publishCommand({
+			command: 'relay-execution-lifecycle-event',
+			payload: { ...pushMsgCopy, pushRef },
+		});
+	}
 }
 
 export const setupPushServer = (restEndpoint: string, server: Server, app: Application) => {

packages/cli/src/scaling/__tests__/job-processor.service.test.ts

@@ -19,6 +19,7 @@ describe('JobProcessor', () => {
 			mock(),
 			mock(),
 			mock(),
+			mock(),
 		);
 
 		const result = await jobProcessor.processJob(mock<Job>());

packages/cli/src/scaling/__tests__/pubsub-handler.test.ts

@@ -11,7 +11,6 @@ import type { ExternalSecretsManager } from '@/external-secrets.ee/external-secr
 import type { IWorkflowDb } from '@/interfaces';
 import type { License } from '@/license';
 import type { Push } from '@/push';
-import type { WebSocketPush } from '@/push/websocket.push';
 import type { CommunityPackagesService } from '@/services/community-packages.service';
 import type { TestWebhooks } from '@/webhooks/test-webhooks';
 
@@ -829,9 +828,7 @@ describe('PubSubHandler', () => {
 					flattedRunData: '[]',
 				};
 
-				push.getBackend.mockReturnValue(
+				push.hasPushRef.mockReturnValue(true);
-					mock<WebSocketPush>({ hasPushRef: jest.fn().mockReturnValue(true) }),
-				);
 
 				eventService.emit('relay-execution-lifecycle-event', { type, data, pushRef });
 
@@ -858,9 +855,7 @@ describe('PubSubHandler', () => {
 				const workflowEntity = mock<IWorkflowDb>({ id: 'test-workflow-id' });
 				const pushRef = 'test-push-ref';
 
-				push.getBackend.mockReturnValue(
+				push.hasPushRef.mockReturnValue(true);
-					mock<WebSocketPush>({ hasPushRef: jest.fn().mockReturnValue(true) }),
-				);
 				testWebhooks.toWorkflow.mockReturnValue(mock<Workflow>({ id: 'test-workflow-id' }));
 
 				eventService.emit('clear-test-webhooks', { webhookKey, workflowEntity, pushRef });

packages/cli/src/scaling/job-processor.ts

@@ -1,6 +1,11 @@
 import type { RunningJobSummary } from '@n8n/api-types';
-import { ErrorReporter, InstanceSettings, WorkflowExecute, Logger } from 'n8n-core';
+import { InstanceSettings, WorkflowExecute, ErrorReporter, Logger } from 'n8n-core';
-import type { ExecutionStatus, IExecuteResponsePromiseData, IRun } from 'n8n-workflow';
+import type {
+	ExecutionStatus,
+	IExecuteResponsePromiseData,
+	IRun,
+	IWorkflowExecutionDataProcess,
+} from 'n8n-workflow';
 import { BINARY_ENCODING, ApplicationError, Workflow } from 'n8n-workflow';
 import type PCancelable from 'p-cancelable';
 import { Service } from 'typedi';
@@ -8,6 +13,7 @@ import { Service } from 'typedi';
 import config from '@/config';
 import { ExecutionRepository } from '@/databases/repositories/execution.repository';
 import { WorkflowRepository } from '@/databases/repositories/workflow.repository';
+import { ManualExecutionService } from '@/manual-execution.service';
 import { NodeTypes } from '@/node-types';
 import * as WorkflowExecuteAdditionalData from '@/workflow-execute-additional-data';
 
@@ -34,6 +40,7 @@ export class JobProcessor {
 		private readonly workflowRepository: WorkflowRepository,
 		private readonly nodeTypes: NodeTypes,
 		private readonly instanceSettings: InstanceSettings,
+		private readonly manualExecutionService: ManualExecutionService,
 	) {
 		this.logger = this.logger.scoped('scaling');
 	}
@@ -115,13 +122,20 @@ export class JobProcessor {
 			executionTimeoutTimestamp,
 		);
 
+		const { pushRef } = job.data;
+
 		additionalData.hooks = WorkflowExecuteAdditionalData.getWorkflowHooksWorkerExecuter(
 			execution.mode,
 			job.data.executionId,
 			execution.workflowData,
-			{ retryOf: execution.retryOf as string },
+			{ retryOf: execution.retryOf as string, pushRef },
 		);
 
+		if (pushRef) {
+			// eslint-disable-next-line @typescript-eslint/no-unsafe-assignment
+			additionalData.sendDataToUI = WorkflowExecuteAdditionalData.sendDataToUI.bind({ pushRef });
+		}
+
 		additionalData.hooks.hookFunctions.sendResponse = [
 			async (response: IExecuteResponsePromiseData): Promise<void> => {
 				const msg: RespondToWebhookMessage = {
@@ -146,7 +160,31 @@ export class JobProcessor {
 
 		let workflowExecute: WorkflowExecute;
 		let workflowRun: PCancelable<IRun>;
-		if (execution.data !== undefined) {
+
+		const { startData, resultData, manualData, isTestWebhook } = execution.data;
+
+		if (execution.mode === 'manual' && !isTestWebhook) {
+			const data: IWorkflowExecutionDataProcess = {
+				executionMode: execution.mode,
+				workflowData: execution.workflowData,
+				destinationNode: startData?.destinationNode,
+				startNodes: startData?.startNodes,
+				runData: resultData.runData,
+				pinData: resultData.pinData,
+				partialExecutionVersion: manualData?.partialExecutionVersion,
+				dirtyNodeNames: manualData?.dirtyNodeNames,
+				triggerToStartFrom: manualData?.triggerToStartFrom,
+				userId: manualData?.userId,
+			};
+
+			workflowRun = this.manualExecutionService.runManually(
+				data,
+				workflow,
+				additionalData,
+				executionId,
+				resultData.pinData,
+			);
+		} else if (execution.data !== undefined) {
 			workflowExecute = new WorkflowExecute(additionalData, execution.mode, execution.data);
 			workflowRun = workflowExecute.processRunExecutionData(workflow);
 		} else {

packages/cli/src/scaling/pubsub/pubsub-handler.ts

@@ -160,12 +160,12 @@ export class PubSubHandler {
 		'display-workflow-activation-error': async ({ workflowId, errorMessage }) =>
 			this.push.broadcast({ type: 'workflowFailedToActivate', data: { workflowId, errorMessage } }),
 		'relay-execution-lifecycle-event': async ({ pushRef, ...pushMsg }) => {
-			if (!this.push.getBackend().hasPushRef(pushRef)) return;
+			if (!this.push.hasPushRef(pushRef)) return;
 
 			this.push.send(pushMsg, pushRef);
 		},
 		'clear-test-webhooks': async ({ webhookKey, workflowEntity, pushRef }) => {
-			if (!this.push.getBackend().hasPushRef(pushRef)) return;
+			if (!this.push.hasPushRef(pushRef)) return;
 
 			this.testWebhooks.clearTimeout(webhookKey);
 

packages/cli/src/scaling/scaling.types.ts

@@ -12,6 +12,7 @@ export type JobId = Job['id'];
 export type JobData = {
 	executionId: string;
 	loadStaticData: boolean;
+	pushRef?: string;
 };
 
 export type JobResult = {

packages/cli/src/webhooks/test-webhooks.ts

@@ -154,11 +154,7 @@ export class TestWebhooks implements IWebhookManager {
 			 * the webhook. If so, after the test webhook has been successfully executed,
 			 * the handler process commands the creator process to clear its test webhooks.
 			 */
-			if (
+			if (this.instanceSettings.isMultiMain && pushRef && !this.push.hasPushRef(pushRef)) {
-				this.instanceSettings.isMultiMain &&
-				pushRef &&
-				!this.push.getBackend().hasPushRef(pushRef)
-			) {
 				void this.publisher.publishCommand({
 					command: 'clear-test-webhooks',
 					payload: { webhookKey: key, workflowEntity, pushRef },

packages/cli/src/webhooks/webhook-helpers.ts

@@ -37,10 +37,12 @@ import {
 	FORM_NODE_TYPE,
 	NodeOperationError,
 } from 'n8n-workflow';
+import assert from 'node:assert';
 import { finished } from 'stream/promises';
 import { Container } from 'typedi';
 
 import { ActiveExecutions } from '@/active-executions';
+import config from '@/config';
 import type { Project } from '@/databases/entities/project';
 import { InternalServerError } from '@/errors/response-errors/internal-server.error';
 import { NotFoundError } from '@/errors/response-errors/not-found.error';
@@ -531,6 +533,15 @@ export async function executeWebhook(
 				});
 		}
 
+		if (
+			config.getEnv('executions.mode') === 'queue' &&
+			process.env.OFFLOAD_MANUAL_EXECUTIONS_TO_WORKERS === 'true' &&
+			runData.executionMode === 'manual'
+		) {
+			assert(runData.executionData);
+			runData.executionData.isTestWebhook = true;
+		}
+
 		// Start now to run the workflow
 		executionId = await Container.get(WorkflowRunner).run(
 			runData,

packages/cli/src/workflow-execute-additional-data.ts

@@ -5,7 +5,13 @@
 import type { PushMessage, PushType } from '@n8n/api-types';
 import { GlobalConfig } from '@n8n/config';
 import { stringify } from 'flatted';
-import { ErrorReporter, Logger, WorkflowExecute, isObjectLiteral } from 'n8n-core';
+import {
+	ErrorReporter,
+	Logger,
+	InstanceSettings,
+	WorkflowExecute,
+	isObjectLiteral,
+} from 'n8n-core';
 import { ApplicationError, NodeOperationError, Workflow, WorkflowHooks } from 'n8n-workflow';
 import type {
 	IDataObject,
@@ -1076,8 +1082,7 @@ function getWorkflowHooksIntegrated(
 }
 
 /**
- * Returns WorkflowHooks instance for running integrated workflows
+ * Returns WorkflowHooks instance for worker in scaling mode.
- * (Workflows which get started inside of another workflow)
  */
 export function getWorkflowHooksWorkerExecuter(
 	mode: WorkflowExecuteMode,
@@ -1093,6 +1098,17 @@ export function getWorkflowHooksWorkerExecuter(
 		hooks.push.apply(hookFunctions[key], preExecuteFunctions[key]);
 	}
 
+	if (mode === 'manual' && Container.get(InstanceSettings).isWorker) {
+		const pushHooks = hookFunctionsPush();
+		for (const key of Object.keys(pushHooks)) {
+			if (hookFunctions[key] === undefined) {
+				hookFunctions[key] = [];
+			}
+			// eslint-disable-next-line prefer-spread
+			hookFunctions[key].push.apply(hookFunctions[key], pushHooks[key]);
+		}
+	}
+
 	return new WorkflowHooks(hookFunctions, mode, executionId, workflowData, optionalParameters);
 }
 

packages/cli/src/workflow-runner.ts

@@ -82,7 +82,7 @@ export class WorkflowRunner {
 		// in queue mode, first do a sanity run for the edge case that the execution was not marked as stalled
 		// by Bull even though it executed successfully, see https://github.com/OptimalBits/bull/issues/1415
 
-		if (isQueueMode && executionMode !== 'manual') {
+		if (isQueueMode) {
 			const executionWithoutData = await this.executionRepository.findSingleExecution(executionId, {
 				includeData: false,
 			});
@@ -153,9 +153,13 @@ export class WorkflowRunner {
 			this.activeExecutions.attachResponsePromise(executionId, responsePromise);
 		}
 
-		if (this.executionsMode === 'queue' && data.executionMode !== 'manual') {
+		// @TODO: Reduce to true branch once feature is stable
-			// Do not run "manual" executions in bull because sending events to the
+		const shouldEnqueue =
-			// frontend would not be possible
+			process.env.OFFLOAD_MANUAL_EXECUTIONS_TO_WORKERS === 'true'
+				? this.executionsMode === 'queue'
+				: this.executionsMode === 'queue' && data.executionMode !== 'manual';
+
+		if (shouldEnqueue) {
 			await this.enqueueExecution(executionId, data, loadStaticData, realtime);
 		} else {
 			await this.runMainProcess(executionId, data, loadStaticData, restartExecutionId);
@@ -349,6 +353,7 @@ export class WorkflowRunner {
 		const jobData: JobData = {
 			executionId,
 			loadStaticData: !!loadStaticData,
+			pushRef: data.pushRef,
 		};
 
 		if (!this.scalingService) {

packages/cli/src/workflows/workflow-execution.service.ts

@@ -15,6 +15,7 @@ import type {
 import { SubworkflowOperationError, Workflow } from 'n8n-workflow';
 import { Service } from 'typedi';
 
+import config from '@/config';
 import type { Project } from '@/databases/entities/project';
 import type { User } from '@/databases/entities/user';
 import { ExecutionRepository } from '@/databases/repositories/execution.repository';
@@ -146,6 +147,35 @@ export class WorkflowExecutionService {
 			triggerToStartFrom,
 		};
 
+		/**
+		 * Historically, manual executions in scaling mode ran in the main process,
+		 * so some execution details were never persisted in the database.
+		 *
+		 * Currently, manual executions in scaling mode are offloaded to workers,
+		 * so we persist all details to give workers full access to them.
+		 */
+		if (
+			config.getEnv('executions.mode') === 'queue' &&
+			process.env.OFFLOAD_MANUAL_EXECUTIONS_TO_WORKERS === 'true'
+		) {
+			data.executionData = {
+				startData: {
+					startNodes,
+					destinationNode,
+				},
+				resultData: {
+					pinData,
+					runData,
+				},
+				manualData: {
+					userId: data.userId,
+					partialExecutionVersion: data.partialExecutionVersion,
+					dirtyNodeNames,
+					triggerToStartFrom,
+				},
+			};
+		}
+
 		const hasRunData = (node: INode) => runData !== undefined && !!runData[node.name];
 
 		if (pinnedTrigger && !hasRunData(pinnedTrigger)) {

packages/cli/test/integration/collaboration/collaboration.service.test.ts

@@ -16,7 +16,7 @@ import { createWorkflow, shareWorkflowWithUsers } from '@test-integration/db/wor
 import * as testDb from '@test-integration/test-db';
 
 describe('CollaborationService', () => {
-	mockInstance(Push, new Push(mock(), mock()));
+	mockInstance(Push, new Push(mock(), mock(), mock()));
 	let pushService: Push;
 	let collaborationService: CollaborationService;
 	let owner: User;

packages/core/src/InstanceSettings.ts

@@ -113,6 +113,10 @@ export class InstanceSettings {
 		return !this.isMultiMain;
 	}
 
+	get isWorker() {
+		return this.instanceType === 'worker';
+	}
+
 	get isLeader() {
 		return this.instanceRole === 'leader';
 	}

packages/design-system/src/components/index.ts

@@ -36,6 +36,7 @@ export { default as N8nOption } from './N8nOption';
 export { default as N8nPopover } from './N8nPopover';
 export { default as N8nPulse } from './N8nPulse';
 export { default as N8nRadioButtons } from './N8nRadioButtons';
+export { default as N8nRoute } from './N8nRoute';
 export { default as N8nRecycleScroller } from './N8nRecycleScroller';
 export { default as N8nResizeWrapper } from './N8nResizeWrapper';
 export { default as N8nSelect } from './N8nSelect';

packages/editor-ui/src/components/RunData.vue

@@ -1,18 +1,19 @@
 <script setup lang="ts">
 import { useStorage } from '@/composables/useStorage';
 import { saveAs } from 'file-saver';
-import type {
+import {
-	IBinaryData,
+	type IBinaryData,
-	IConnectedNode,
+	type IConnectedNode,
-	IDataObject,
+	type IDataObject,
-	INodeExecutionData,
+	type INodeExecutionData,
-	INodeOutputConfiguration,
+	type INodeOutputConfiguration,
-	IRunData,
+	type IRunData,
-	IRunExecutionData,
+	type IRunExecutionData,
-	ITaskMetadata,
+	type ITaskMetadata,
-	NodeError,
+	type NodeError,
-	NodeHint,
+	type NodeHint,
-	Workflow,
+	type Workflow,
+	TRIMMED_TASK_DATA_CONNECTIONS_KEY,
 } from 'n8n-workflow';
 import { NodeConnectionType, NodeHelpers } from 'n8n-workflow';
 import { computed, defineAsyncComponent, onBeforeUnmount, onMounted, ref, toRef, watch } from 'vue';
@@ -64,6 +65,7 @@ import { isEqual, isObject } from 'lodash-es';
 import {
 	N8nBlockUi,
 	N8nButton,
+	N8nRoute,
 	N8nCallout,
 	N8nIconButton,
 	N8nInfoTip,
@@ -275,6 +277,10 @@ const isArtificialRecoveredEventItem = computed(
 	() => rawInputData.value?.[0]?.json?.isArtificialRecoveredEventItem,
 );
 
+const isTrimmedManualExecutionDataItem = computed(
+	() => rawInputData.value?.[0]?.json?.[TRIMMED_TASK_DATA_CONNECTIONS_KEY],
+);
+
 const subworkflowExecutionError = computed(() => {
 	if (!node.value) return null;
 	return {
@@ -1245,6 +1251,10 @@ function onSearchClear() {
 	document.dispatchEvent(new KeyboardEvent('keyup', { key: '/' }));
 }
 
+function onExecutionHistoryNavigate() {
+	ndvStore.setActiveNodeName(null);
+}
+
 function getExecutionLinkLabel(task: ITaskMetadata): string | undefined {
 	if (task.parentExecution) {
 		return i18n.baseText('runData.openParentExecution', {
@@ -1310,7 +1320,7 @@ defineExpose({ enterEditMode });
 			<slot name="header"></slot>
 
 			<div
-				v-show="!hasRunError"
+				v-show="!hasRunError && !isTrimmedManualExecutionDataItem"
 				:class="$style.displayModes"
 				data-test-id="run-data-pane-header"
 				@click.stop
@@ -1591,6 +1601,20 @@ defineExpose({ enterEditMode });
 				</N8nText>
 			</div>
 
+			<div v-else-if="isTrimmedManualExecutionDataItem" :class="$style.center">
+				<N8nText bold color="text-dark" size="large">
+					{{ i18n.baseText('runData.trimmedData.title') }}
+				</N8nText>
+				<N8nText>
+					{{ i18n.baseText('runData.trimmedData.message') }}
+				</N8nText>
+				<N8nButton size="small" @click="onExecutionHistoryNavigate">
+					<N8nRoute :to="`/workflow/${workflowsStore.workflowId}/executions`">
+						{{ i18n.baseText('runData.trimmedData.button') }}
+					</N8nRoute>
+				</N8nButton>
+			</div>
+
 			<div v-else-if="hasNodeRun && isArtificialRecoveredEventItem" :class="$style.center">
 				<slot name="recovered-artificial-output-data"></slot>
 			</div>

packages/editor-ui/src/plugins/i18n/locales/en.json

@@ -1662,6 +1662,9 @@
 	"runData.aiContentBlock.tokens": "{count} Tokens",
 	"runData.aiContentBlock.tokens.prompt": "Prompt:",
 	"runData.aiContentBlock.tokens.completion": "Completion:",
+	"runData.trimmedData.title": "Data too large to display",
+	"runData.trimmedData.message": "The data is too large to be shown here. View the full details in 'Executions' tab.",
+	"runData.trimmedData.button": "See execution",
 	"saveButton.save": "@:_reusableBaseText.save",
 	"saveButton.saved": "Saved",
 	"saveWorkflowButton.hint": "Save workflow",

packages/workflow/src/Constants.ts

@@ -88,3 +88,10 @@ export const LANGCHAIN_CUSTOM_TOOLS = [
 export const SEND_AND_WAIT_OPERATION = 'sendAndWait';
 export const AI_TRANSFORM_CODE_GENERATED_FOR_PROMPT = 'codeGeneratedForPrompt';
 export const AI_TRANSFORM_JS_CODE = 'jsCode';
+
+/**
+ * Key for an item standing in for a manual execution data item too large to be
+ * sent live via pubsub. See {@link TRIMMED_TASK_DATA_CONNECTIONS} in constants
+ * in `cli` package.
+ */
+export const TRIMMED_TASK_DATA_CONNECTIONS_KEY = '__isTrimmedManualExecutionDataItem';

packages/workflow/src/Interfaces.ts

@@ -2118,6 +2118,7 @@ export interface IRun {
 // The RunData, ExecuteData and WaitForExecution contain often the same data.
 export interface IRunExecutionData {
 	startData?: {
+		startNodes?: StartNodeData[];
 		destinationNode?: string;
 		runNodeFilter?: string[];
 	};
@@ -2141,6 +2142,15 @@ export interface IRunExecutionData {
 	parentExecution?: RelatedExecution;
 	waitTill?: Date;
 	pushRef?: string;
+
+	/** Whether this execution was started by a test webhook call. */
+	isTestWebhook?: boolean;
+
+	/** Data needed for a worker to run a manual execution. */
+	manualData?: Pick<
+		IWorkflowExecutionDataProcess,
+		'partialExecutionVersion' | 'dirtyNodeNames' | 'triggerToStartFrom' | 'userId'
+	>;
 }
 
 export interface IRunData {