feat(Webhook Node): Setting to enable multiple outputs/methods (#9086)

Co-authored-by: Giulio Andreini <andreini@netseven.it>

packages/cli/src/TestWebhooks.ts

@@ -238,13 +238,20 @@ export class TestWebhooks implements IWebhookManager {
 
 		for (const webhook of webhooks) {
 			const key = this.registrations.toKey(webhook);
-			const isAlreadyRegistered = await this.registrations.get(key);
+			const registrationByKey = await this.registrations.get(key);
 
 			if (runData && webhook.node in runData) {
 				return false;
 			}
 
-			if (isAlreadyRegistered && !webhook.webhookId) {
+			// if registration already exists and is not a test webhook created by this user in this workflow throw an error
+			if (
+				registrationByKey &&
+				!webhook.webhookId &&
+				!registrationByKey.webhook.isTest &&
+				registrationByKey.webhook.userId !== userId &&
+				registrationByKey.webhook.workflowId !== workflow.id
+			) {
 				throw new WebhookPathTakenError(webhook.node);
 			}
 

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

@@ -28,9 +28,7 @@
 				>
 					<div v-if="isWebhookMethodVisible(webhook)" class="webhook-wrapper">
 						<div class="http-field">
-							<div class="http-method">
-								{{ workflowHelpers.getWebhookExpressionValue(webhook, 'httpMethod') }}<br />
-							</div>
+							<div class="http-method">{{ getWebhookHttpMethod(webhook) }}<br /></div>
 						</div>
 						<div class="url-field">
 							<div class="webhook-url left-ellipsis clickable" @click="copyWebhookUrl(webhook)">
@@ -195,12 +193,27 @@ export default defineComponent({
 			return '';
 		},
 		isWebhookMethodVisible(webhook: IWebhookDescription): boolean {
+			try {
+				const method = this.workflowHelpers.getWebhookExpressionValue(webhook, 'httpMethod', false);
+				if (Array.isArray(method) && method.length !== 1) {
+					return false;
+				}
+			} catch (error) {}
+
 			if (typeof webhook.ndvHideMethod === 'string') {
 				return !this.workflowHelpers.getWebhookExpressionValue(webhook, 'ndvHideMethod');
 			}
 
 			return !webhook.ndvHideMethod;
 		},
+
+		getWebhookHttpMethod(webhook: IWebhookDescription): string {
+			const method = this.workflowHelpers.getWebhookExpressionValue(webhook, 'httpMethod', false);
+			if (Array.isArray(method)) {
+				return method[0];
+			}
+			return method;
+		},
 	},
 });
 </script>

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

@@ -225,10 +225,17 @@ export default defineComponent({
 				return undefined;
 			}
 
-			return this.workflowHelpers.getWebhookExpressionValue(
+			const httpMethod = this.workflowHelpers.getWebhookExpressionValue(
 				this.nodeType.webhooks[0],
 				'httpMethod',
+				false,
 			);
+
+			if (Array.isArray(httpMethod)) {
+				return httpMethod.join(', ');
+			}
+
+			return httpMethod;
 		},
 		webhookTestUrl(): string | undefined {
 			if (!this.node || !this.nodeType?.webhooks?.length) {

packages/editor-ui/src/composables/useWorkflowHelpers.ts

@@ -738,12 +738,21 @@ export function useWorkflowHelpers(options: { router: ReturnType<typeof useRoute
 		return nodeData;
 	}
 
-	function getWebhookExpressionValue(webhookData: IWebhookDescription, key: string): string {
+	function getWebhookExpressionValue(
+		webhookData: IWebhookDescription,
+		key: string,
+		stringify = true,
+	): string {
 		if (webhookData[key] === undefined) {
 			return 'empty';
 		}
 		try {
-			return resolveExpression(webhookData[key] as string) as string;
+			return resolveExpression(
+				webhookData[key] as string,
+				undefined,
+				undefined,
+				stringify,
+			) as string;
 		} catch (e) {
 			return i18n.baseText('nodeWebhooks.invalidExpression');
 		}
@@ -785,6 +794,7 @@ export function useWorkflowHelpers(options: { router: ReturnType<typeof useRoute
 			c?: number;
 			additionalKeys?: IWorkflowDataProxyAdditionalKeys;
 		} = {},
+		stringifyObject = true,
 	) {
 		const parameters = {
 			__xxxxxxx__: expression,
@@ -796,7 +806,7 @@ export function useWorkflowHelpers(options: { router: ReturnType<typeof useRoute
 		}
 
 		const obj = returnData.__xxxxxxx__;
-		if (typeof obj === 'object') {
+		if (typeof obj === 'object' && stringifyObject) {
 			const proxy = obj as { isProxy: boolean; toJSON?: () => unknown } | null;
 			if (proxy?.isProxy && proxy.toJSON) return JSON.stringify(proxy.toJSON());
 			const workflow = getCurrentWorkflow();

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

@@ -74,7 +74,60 @@ export class Webhook extends Node {
 		credentials: credentialsProperty(this.authPropertyName),
 		webhooks: [defaultWebhookDescription],
 		properties: [
-			httpMethodsProperty,
+			{
+				displayName: 'Allow Multiple HTTP Methods',
+				name: 'multipleMethods',
+				type: 'boolean',
+				default: false,
+				isNodeSetting: true,
+				description: 'Whether to allow the webhook to listen for multiple HTTP methods',
+			},
+			{
+				...httpMethodsProperty,
+				displayOptions: {
+					show: {
+						multipleMethods: [false],
+					},
+				},
+			},
+			{
+				displayName: 'HTTP Methods',
+				name: 'httpMethod',
+				type: 'multiOptions',
+				options: [
+					{
+						name: 'DELETE',
+						value: 'DELETE',
+					},
+					{
+						name: 'GET',
+						value: 'GET',
+					},
+					{
+						name: 'HEAD',
+						value: 'HEAD',
+					},
+					{
+						name: 'PATCH',
+						value: 'PATCH',
+					},
+					{
+						name: 'POST',
+						value: 'POST',
+					},
+					{
+						name: 'PUT',
+						value: 'PUT',
+					},
+				],
+				default: ['GET', 'POST'],
+				description: 'The HTTP methods to listen to',
+				displayOptions: {
+					show: {
+						multipleMethods: [true],
+					},
+				},
+			},
 			{
 				displayName: 'Path',
 				name: 'path',
@@ -144,6 +197,7 @@ export class Webhook extends Node {
 		};
 		const req = context.getRequestObject();
 		const resp = context.getResponseObject();
+		const requestMethod = context.getRequestObject().method;
 
 		if (!isIpWhitelisted(options.ipWhitelist, req.ips, req.ip)) {
 			resp.writeHead(403);
@@ -165,7 +219,7 @@ export class Webhook extends Node {
 			throw error;
 		}
 
-		const prepareOutput = setupOutputConnection(context, {
+		const prepareOutput = setupOutputConnection(context, requestMethod, {
 			jwtPayload: validationData,
 		});
 

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

@@ -50,22 +50,34 @@ export const getResponseData = (parameters: WebhookParameters) => {
 };
 
 export const configuredOutputs = (parameters: WebhookParameters) => {
-	const httpMethod = parameters.httpMethod;
+	const httpMethod = parameters.httpMethod as string | string[];
 
-	return [
-		{
+	if (!Array.isArray(httpMethod))
+		return [
+			{
+				type: `${NodeConnectionType.Main}`,
+				displayName: httpMethod,
+			},
+		];
+
+	const outputs = httpMethod.map((method) => {
+		return {
 			type: `${NodeConnectionType.Main}`,
-			displayName: httpMethod,
-		},
-	];
+			displayName: method,
+		};
+	});
+
+	return outputs;
 };
 
 export const setupOutputConnection = (
 	ctx: IWebhookFunctions,
+	method: string,
 	additionalData: {
 		jwtPayload?: IDataObject;
 	},
 ) => {
+	const httpMethod = ctx.getNodeParameter('httpMethod', []) as string[] | string;
 	let webhookUrl = ctx.getNodeWebhookUrl('default') as string;
 	const executionMode = ctx.getMode() === 'manual' ? 'test' : 'production';
 
@@ -73,13 +85,29 @@ export const setupOutputConnection = (
 		webhookUrl = webhookUrl.replace('/webhook/', '/webhook-test/');
 	}
 
+	// multi methods could be set in settings of node, so we need to check if it's an array
+	if (!Array.isArray(httpMethod)) {
+		return (outputData: INodeExecutionData): INodeExecutionData[][] => {
+			outputData.json.webhookUrl = webhookUrl;
+			outputData.json.executionMode = executionMode;
+			if (additionalData?.jwtPayload) {
+				outputData.json.jwtPayload = additionalData.jwtPayload;
+			}
+			return [[outputData]];
+		};
+	}
+
+	const outputIndex = httpMethod.indexOf(method.toUpperCase());
+	const outputs: INodeExecutionData[][] = httpMethod.map(() => []);
+
 	return (outputData: INodeExecutionData): INodeExecutionData[][] => {
 		outputData.json.webhookUrl = webhookUrl;
 		outputData.json.executionMode = executionMode;
 		if (additionalData?.jwtPayload) {
 			outputData.json.jwtPayload = additionalData.jwtPayload;
 		}
-		return [[outputData]];
+		outputs[outputIndex] = [outputData];
+		return outputs;
 	};
 };
 

packages/workflow/src/NodeHelpers.ts

@@ -996,7 +996,7 @@ export function getNodeWebhooks(
 		) as boolean;
 		const path = getNodeWebhookPath(workflowId, node, nodeWebhookPath, isFullPath, restartWebhook);
 
-		const httpMethod = workflow.expression.getSimpleParameterValue(
+		const webhookMethods = workflow.expression.getSimpleParameterValue(
 			node,
 			webhookDescription.httpMethod,
 			mode,
@@ -1005,7 +1005,7 @@ export function getNodeWebhooks(
 			'GET',
 		);
 
-		if (httpMethod === undefined) {
+		if (webhookMethods === undefined) {
 			// TODO: Use a proper logger
 			console.error(
 				`The webhook "${path}" for node "${node.name}" in workflow "${workflowId}" could not be added because the httpMethod is not defined.`,
@@ -1018,15 +1018,20 @@ export function getNodeWebhooks(
 			webhookId = node.webhookId;
 		}
 
-		returnData.push({
-			httpMethod: httpMethod.toString() as IHttpRequestMethods,
-			node: node.name,
-			path,
-			webhookDescription,
-			workflowId,
-			workflowExecuteAdditionalData: additionalData,
-			webhookId,
-		});
+		String(webhookMethods)
+			.split(',')
+			.forEach((httpMethod) => {
+				if (!httpMethod) return;
+				returnData.push({
+					httpMethod: httpMethod.trim() as IHttpRequestMethods,
+					node: node.name,
+					path,
+					webhookDescription,
+					workflowId,
+					workflowExecuteAdditionalData: additionalData,
+					webhookId,
+				});
+			});
 	}
 
 	return returnData;