fix(Webhook Node): Fix URL params for webhooks (#6986)

Fixes:

https://community.n8n.io/t/empty-params-variables-in-webhook-node-after-upgrading-to-n8n-1-3-1/29624

packages/cli/src/ActiveWorkflowRunner.ts

@@ -194,6 +194,9 @@ export class ActiveWorkflowRunner implements IWebhookManager {
 
 		Logger.debug(`Received webhook "${httpMethod}" for path "${path}"`);
 
+		// Reset request parameters
+		request.params = {} as WebhookRequest['params'];
+
 		// Remove trailing slash
 		if (path.endsWith('/')) {
 			path = path.slice(0, -1);

packages/cli/src/TestWebhooks.ts

@@ -56,6 +56,9 @@ export class TestWebhooks implements IWebhookManager {
 		const httpMethod = request.method;
 		let path = request.params.path;
 
+		// Reset request parameters
+		request.params = {} as WebhookRequest['params'];
+
 		// Remove trailing slash
 		if (path.endsWith('/')) {
 			path = path.slice(0, -1);

packages/cli/src/WaitingWebhooks.ts

@@ -32,6 +32,9 @@ export class WaitingWebhooks implements IWebhookManager {
 		const { path: executionId, suffix } = req.params;
 		Logger.debug(`Received waiting-webhook "${req.method}" for execution "${executionId}"`);
 
+		// Reset request parameters
+		req.params = {} as WaitingWebhookRequest['params'];
+
 		const execution = await this.executionRepository.findSingleExecution(executionId, {
 			includeData: true,
 			unflattenData: true,

packages/cli/test/integration/webhooks.api.test.ts

@@ -10,6 +10,7 @@ import { InternalHooks } from '@/InternalHooks';
 import { getLogger } from '@/Logger';
 import { NodeTypes } from '@/NodeTypes';
 import { Push } from '@/push';
+import type { WorkflowEntity } from '@db/entities/WorkflowEntity';
 
 import { mockInstance, initActiveWorkflowRunner } from './shared/utils';
 import * as testDb from './shared/testDb';
@@ -22,47 +23,43 @@ describe('Webhook API', () => {
 
 	let agent: SuperAgentTest;
 
+	beforeAll(async () => {
+		await testDb.init();
+	});
+
+	afterAll(async () => {
+		await testDb.terminate();
+	});
+
 	describe('Content-Type support', () => {
 		beforeAll(async () => {
-			await testDb.init();
-
 			const node = new WebhookTestingNode();
 			const user = await testDb.createUser();
-			await testDb.createWorkflow(
-				{
-					active: true,
-					nodes: [
-						{
-							name: 'Webhook',
-							type: node.description.name,
-							typeVersion: 1,
-							parameters: {
-								httpMethod: 'POST',
-								path: 'abcd',
-							},
-							id: '74786112-fb73-4d80-bd9a-43982939b801',
-							webhookId: '5ccef736-be16-4d10-b7fb-feed7a61ff22',
-							position: [740, 420],
-						},
-					],
-				},
-				user,
-			);
+			await testDb.createWorkflow(createWebhookWorkflow(node), user);
 
 			const nodeTypes = mockInstance(NodeTypes);
 			nodeTypes.getByName.mockReturnValue(node);
 			nodeTypes.getByNameAndVersion.mockReturnValue(node);
 
 			await initActiveWorkflowRunner();
+
 			const server = new (class extends AbstractServer {})();
 			await server.start();
 			agent = testAgent(server.app);
 		});
 
+		afterAll(async () => {
+			await testDb.truncate(['Workflow']);
+		});
+
 		test('should handle JSON', async () => {
 			const response = await agent.post('/webhook/abcd').send({ test: true });
 			expect(response.statusCode).toEqual(200);
-			expect(response.body).toEqual({ type: 'application/json', body: { test: true } });
+			expect(response.body).toEqual({
+				type: 'application/json',
+				body: { test: true },
+				params: {},
+			});
 		});
 
 		test('should handle XML', async () => {
@@ -83,6 +80,7 @@ describe('Webhook API', () => {
 						inner: 'value',
 					},
 				},
+				params: {},
 			});
 		});
 
@@ -95,6 +93,7 @@ describe('Webhook API', () => {
 			expect(response.body).toEqual({
 				type: 'application/x-www-form-urlencoded',
 				body: { x: '5', y: 'str', z: 'false' },
+				params: {},
 			});
 		});
 
@@ -107,6 +106,7 @@ describe('Webhook API', () => {
 			expect(response.body).toEqual({
 				type: 'text/plain',
 				body: '{"key": "value"}',
+				params: {},
 			});
 		});
 
@@ -133,6 +133,44 @@ describe('Webhook API', () => {
 		});
 	});
 
+	describe('Params support', () => {
+		beforeAll(async () => {
+			const node = new WebhookTestingNode();
+			const user = await testDb.createUser();
+			await testDb.createWorkflow(createWebhookWorkflow(node, ':variable', 'PATCH'), user);
+
+			const nodeTypes = mockInstance(NodeTypes);
+			nodeTypes.getByName.mockReturnValue(node);
+			nodeTypes.getByNameAndVersion.mockReturnValue(node);
+
+			await initActiveWorkflowRunner();
+
+			const server = new (class extends AbstractServer {})();
+			await server.start();
+			agent = testAgent(server.app);
+		});
+
+		afterAll(async () => {
+			await testDb.truncate(['Workflow']);
+		});
+
+		test('should handle params', async () => {
+			const response = await agent
+				.patch('/webhook/5ccef736-be16-4d10-b7fb-feed7a61ff22/test')
+				.send({ test: true });
+			expect(response.statusCode).toEqual(200);
+			expect(response.body).toEqual({
+				type: 'application/json',
+				body: { test: true },
+				params: {
+					variable: 'test',
+				},
+			});
+
+			await agent.post('/webhook/abcd').send({ test: true }).expect(404);
+		});
+	});
+
 	class WebhookTestingNode implements INodeType {
 		description: INodeTypeDescription = {
 			displayName: 'Webhook Testing Node',
@@ -173,8 +211,28 @@ describe('Webhook API', () => {
 				webhookResponse: {
 					type: req.contentType,
 					body: req.body,
+					params: req.params,
 				},
 			};
 		}
 	}
+
+	const createWebhookWorkflow = (
+		node: WebhookTestingNode,
+		path = 'abcd',
+		httpMethod = 'POST',
+	): Partial<WorkflowEntity> => ({
+		active: true,
+		nodes: [
+			{
+				name: 'Webhook',
+				type: node.description.name,
+				typeVersion: 1,
+				parameters: { httpMethod, path },
+				id: '74786112-fb73-4d80-bd9a-43982939b801',
+				webhookId: '5ccef736-be16-4d10-b7fb-feed7a61ff22',
+				position: [740, 420],
+			},
+		],
+	});
 });

packages/nodes-base/nodes/Webhook/Webhook.node.ts

@@ -127,7 +127,7 @@ export class Webhook extends Node {
 		const response: INodeExecutionData = {
 			json: {
 				headers: req.headers,
-				params: {},
+				params: req.params,
 				query: req.query,
 				body: req.body,
 			},
@@ -207,7 +207,7 @@ export class Webhook extends Node {
 			binary: {},
 			json: {
 				headers: req.headers,
-				params: {},
+				params: req.params,
 				query: req.query,
 				body: data,
 			},
@@ -263,7 +263,7 @@ export class Webhook extends Node {
 				binary: {},
 				json: {
 					headers: req.headers,
-					params: {},
+					params: req.params,
 					query: req.query,
 					body: {},
 				},