refactor(core): Extract webhook context out of NodeExecutionFunctions (no-changelog) (#11455)

packages/core/src/NodeExecuteFunctions.ts

@@ -23,12 +23,11 @@ import type {
 } from 'axios';
 import axios from 'axios';
 import crypto, { createHmac } from 'crypto';
-import type { Request, Response } from 'express';
 import FileType from 'file-type';
 import FormData from 'form-data';
 import { createReadStream } from 'fs';
 import { access as fsAccess, writeFile as fsWriteFile } from 'fs/promises';
-import { IncomingMessage, type IncomingHttpHeaders } from 'http';
+import { IncomingMessage } from 'http';
 import { Agent, type AgentOptions } from 'https';
 import get from 'lodash/get';
 import isEmpty from 'lodash/isEmpty';
@@ -167,7 +166,7 @@ import { extractValue } from './ExtractValue';
 import { InstanceSettings } from './InstanceSettings';
 import type { ExtendedValidationResult, IResponseError } from './Interfaces';
 // eslint-disable-next-line import/no-cycle
-import { PollContext, TriggerContext } from './node-execution-context';
+import { PollContext, TriggerContext, WebhookContext } from './node-execution-context';
 import { getSecretsProxy } from './Secrets';
 import { SSHClientsManager } from './SSHClientsManager';
 
@@ -2800,7 +2799,7 @@ const addExecutionDataFunctions = async (
 	}
 };
 
-async function getInputConnectionData(
+export async function getInputConnectionData(
 	this: IAllExecuteFunctions,
 	workflow: Workflow,
 	runExecutionData: IRunExecutionData,
@@ -4491,170 +4490,13 @@ export function getExecuteWebhookFunctions(
 	closeFunctions: CloseFunction[],
 	runExecutionData: IRunExecutionData | null,
 ): IWebhookFunctions {
-	return ((workflow: Workflow, node: INode, runExecutionData: IRunExecutionData | null) => {
-		return {
-			...getCommonWorkflowFunctions(workflow, node, additionalData),
-			getBodyData(): IDataObject {
-				if (additionalData.httpRequest === undefined) {
-					throw new ApplicationError('Request is missing');
-				}
-				return additionalData.httpRequest.body;
-			},
-			getCredentials: async (type) =>
-				await getCredentials(workflow, node, type, additionalData, mode),
-			getHeaderData(): IncomingHttpHeaders {
-				if (additionalData.httpRequest === undefined) {
-					throw new ApplicationError('Request is missing');
-				}
-				return additionalData.httpRequest.headers;
-			},
-			async getInputConnectionData(
-				inputName: NodeConnectionType,
-				itemIndex: number,
-			): Promise<unknown> {
-				// To be able to use expressions like "$json.sessionId" set the
-				// body data the webhook received to what is normally used for
-				// incoming node data.
-				const connectionInputData: INodeExecutionData[] = [
-					{ json: additionalData.httpRequest?.body || {} },
-				];
-				const runExecutionData: IRunExecutionData = {
-					resultData: {
-						runData: {},
-					},
-				};
-				const executeData: IExecuteData = {
-					data: {
-						main: [connectionInputData],
-					},
-					node,
-					source: null,
-				};
-				const runIndex = 0;
-
-				return await getInputConnectionData.call(
-					this,
+	return new WebhookContext(
 		workflow,
-					runExecutionData,
-					runIndex,
-					connectionInputData,
-					{} as ITaskDataConnections,
+		node,
 		additionalData,
-					executeData,
 		mode,
+		webhookData,
 		closeFunctions,
-					inputName,
-					itemIndex,
-				);
-			},
-			getMode: () => mode,
-			evaluateExpression: (expression: string, evaluateItemIndex?: number) => {
-				const itemIndex = evaluateItemIndex === undefined ? 0 : evaluateItemIndex;
-				const runIndex = 0;
-
-				let connectionInputData: INodeExecutionData[] = [];
-				let executionData: IExecuteData | undefined;
-
-				if (runExecutionData?.executionData !== undefined) {
-					executionData = runExecutionData.executionData.nodeExecutionStack[0];
-
-					if (executionData !== undefined) {
-						connectionInputData = executionData.data.main[0]!;
-					}
-				}
-
-				const additionalKeys = getAdditionalKeys(additionalData, mode, runExecutionData);
-
-				return workflow.expression.resolveSimpleParameterValue(
-					`=${expression}`,
-					{},
 		runExecutionData,
-					runIndex,
-					itemIndex,
-					node.name,
-					connectionInputData,
-					mode,
-					additionalKeys,
-					executionData,
 	);
-			},
-			getNodeParameter: (
-				parameterName: string,
-				fallbackValue?: any,
-				options?: IGetNodeParameterOptions,
-			): NodeParameterValueType | object => {
-				const itemIndex = 0;
-				const runIndex = 0;
-
-				let connectionInputData: INodeExecutionData[] = [];
-				let executionData: IExecuteData | undefined;
-
-				if (runExecutionData?.executionData !== undefined) {
-					executionData = runExecutionData.executionData.nodeExecutionStack[0];
-
-					if (executionData !== undefined) {
-						connectionInputData = executionData.data.main[0]!;
-					}
-				}
-
-				const additionalKeys = getAdditionalKeys(additionalData, mode, runExecutionData);
-
-				return getNodeParameter(
-					workflow,
-					runExecutionData,
-					runIndex,
-					connectionInputData,
-					node,
-					parameterName,
-					itemIndex,
-					mode,
-					additionalKeys,
-					executionData,
-					fallbackValue,
-					options,
-				);
-			},
-			getParamsData(): object {
-				if (additionalData.httpRequest === undefined) {
-					throw new ApplicationError('Request is missing');
-				}
-				return additionalData.httpRequest.params;
-			},
-			getQueryData(): object {
-				if (additionalData.httpRequest === undefined) {
-					throw new ApplicationError('Request is missing');
-				}
-				return additionalData.httpRequest.query;
-			},
-			getRequestObject(): Request {
-				if (additionalData.httpRequest === undefined) {
-					throw new ApplicationError('Request is missing');
-				}
-				return additionalData.httpRequest;
-			},
-			getResponseObject(): Response {
-				if (additionalData.httpResponse === undefined) {
-					throw new ApplicationError('Response is missing');
-				}
-				return additionalData.httpResponse;
-			},
-			getNodeWebhookUrl: (name: string): string | undefined =>
-				getNodeWebhookUrl(
-					name,
-					workflow,
-					node,
-					additionalData,
-					mode,
-					getAdditionalKeys(additionalData, mode, null),
-				),
-			getWebhookName: () => webhookData.webhookDescription.name,
-			helpers: {
-				createDeferredPromise,
-				...getRequestHelperFunctions(workflow, node, additionalData),
-				...getBinaryHelperFunctions(additionalData, workflow.id),
-				returnJsonArray,
-			},
-			nodeHelpers: getNodeHelperFunctions(additionalData, workflow.id),
-		};
-	})(workflow, node, runExecutionData);
 }

packages/core/src/node-execution-context/__tests__/webhook-context.test.ts

@@ -0,0 +1,161 @@
+import type { Request, Response } from 'express';
+import { mock } from 'jest-mock-extended';
+import type {
+	Expression,
+	ICredentialDataDecryptedObject,
+	ICredentialsHelper,
+	INode,
+	INodeType,
+	INodeTypes,
+	IWebhookData,
+	IWorkflowExecuteAdditionalData,
+	Workflow,
+	WorkflowExecuteMode,
+} from 'n8n-workflow';
+
+import { WebhookContext } from '../webhook-context';
+
+describe('WebhookContext', () => {
+	const testCredentialType = 'testCredential';
+	const nodeType = mock<INodeType>({
+		description: {
+			credentials: [
+				{
+					name: testCredentialType,
+					required: true,
+				},
+			],
+			properties: [
+				{
+					name: 'testParameter',
+					required: true,
+				},
+			],
+		},
+	});
+	const nodeTypes = mock<INodeTypes>();
+	const expression = mock<Expression>();
+	const workflow = mock<Workflow>({ expression, nodeTypes });
+	const node = mock<INode>({
+		credentials: {
+			[testCredentialType]: {
+				id: 'testCredentialId',
+			},
+		},
+	});
+	node.parameters = {
+		testParameter: 'testValue',
+	};
+	const credentialsHelper = mock<ICredentialsHelper>();
+	const additionalData = mock<IWorkflowExecuteAdditionalData>({
+		credentialsHelper,
+	});
+	additionalData.httpRequest = {
+		body: { test: 'body' },
+		headers: { test: 'header' },
+		params: { test: 'param' },
+		query: { test: 'query' },
+	} as unknown as Request;
+	additionalData.httpResponse = mock<Response>();
+	const mode: WorkflowExecuteMode = 'manual';
+	const webhookData = mock<IWebhookData>({
+		webhookDescription: {
+			name: 'default',
+		},
+	});
+	const runExecutionData = null;
+
+	const webhookContext = new WebhookContext(
+		workflow,
+		node,
+		additionalData,
+		mode,
+		webhookData,
+		[],
+		runExecutionData,
+	);
+
+	beforeEach(() => {
+		jest.clearAllMocks();
+	});
+
+	describe('getCredentials', () => {
+		it('should get decrypted credentials', async () => {
+			nodeTypes.getByNameAndVersion.mockReturnValue(nodeType);
+			credentialsHelper.getDecrypted.mockResolvedValue({ secret: 'token' });
+
+			const credentials =
+				await webhookContext.getCredentials<ICredentialDataDecryptedObject>(testCredentialType);
+
+			expect(credentials).toEqual({ secret: 'token' });
+		});
+	});
+
+	describe('getBodyData', () => {
+		it('should return the body data of the request', () => {
+			const bodyData = webhookContext.getBodyData();
+			expect(bodyData).toEqual({ test: 'body' });
+		});
+	});
+
+	describe('getHeaderData', () => {
+		it('should return the header data of the request', () => {
+			const headerData = webhookContext.getHeaderData();
+			expect(headerData).toEqual({ test: 'header' });
+		});
+	});
+
+	describe('getParamsData', () => {
+		it('should return the params data of the request', () => {
+			const paramsData = webhookContext.getParamsData();
+			expect(paramsData).toEqual({ test: 'param' });
+		});
+	});
+
+	describe('getQueryData', () => {
+		it('should return the query data of the request', () => {
+			const queryData = webhookContext.getQueryData();
+			expect(queryData).toEqual({ test: 'query' });
+		});
+	});
+
+	describe('getRequestObject', () => {
+		it('should return the request object', () => {
+			const request = webhookContext.getRequestObject();
+			expect(request).toBe(additionalData.httpRequest);
+		});
+	});
+
+	describe('getResponseObject', () => {
+		it('should return the response object', () => {
+			const response = webhookContext.getResponseObject();
+			expect(response).toBe(additionalData.httpResponse);
+		});
+	});
+
+	describe('getWebhookName', () => {
+		it('should return the name of the webhook', () => {
+			const webhookName = webhookContext.getWebhookName();
+			expect(webhookName).toBe('default');
+		});
+	});
+
+	describe('getNodeParameter', () => {
+		beforeEach(() => {
+			nodeTypes.getByNameAndVersion.mockReturnValue(nodeType);
+			expression.getParameterValue.mockImplementation((value) => value);
+		});
+
+		it('should return parameter value when it exists', () => {
+			const parameter = webhookContext.getNodeParameter('testParameter');
+
+			expect(parameter).toBe('testValue');
+		});
+
+		it('should return the fallback value when the parameter does not exist', () => {
+			const parameter = webhookContext.getNodeParameter('otherParameter', 'fallback');
+
+			expect(parameter).toBe('fallback');
+		});
+	});
+});

packages/core/src/node-execution-context/index.ts

@@ -1,3 +1,4 @@
 // eslint-disable-next-line import/no-cycle
 export { PollContext } from './poll-context';
 export { TriggerContext } from './trigger-context';
+export { WebhookContext } from './webhook-context';

packages/core/src/node-execution-context/webhook-context.ts

@@ -0,0 +1,239 @@
+import type { Request, Response } from 'express';
+import type {
+	CloseFunction,
+	ICredentialDataDecryptedObject,
+	IDataObject,
+	IExecuteData,
+	IGetNodeParameterOptions,
+	INode,
+	INodeExecutionData,
+	IRunExecutionData,
+	ITaskDataConnections,
+	IWebhookData,
+	IWebhookFunctions,
+	IWorkflowExecuteAdditionalData,
+	NodeConnectionType,
+	NodeParameterValueType,
+	Workflow,
+	WorkflowExecuteMode,
+} from 'n8n-workflow';
+import { ApplicationError, createDeferredPromise } from 'n8n-workflow';
+
+// eslint-disable-next-line import/no-cycle
+import {
+	copyBinaryFile,
+	getAdditionalKeys,
+	getCredentials,
+	getInputConnectionData,
+	getNodeParameter,
+	getNodeWebhookUrl,
+	returnJsonArray,
+} from '@/NodeExecuteFunctions';
+
+import { BinaryHelpers } from './helpers/binary-helpers';
+import { RequestHelpers } from './helpers/request-helpers';
+import { NodeExecutionContext } from './node-execution-context';
+
+export class WebhookContext extends NodeExecutionContext implements IWebhookFunctions {
+	readonly helpers: IWebhookFunctions['helpers'];
+
+	readonly nodeHelpers: IWebhookFunctions['nodeHelpers'];
+
+	constructor(
+		workflow: Workflow,
+		node: INode,
+		additionalData: IWorkflowExecuteAdditionalData,
+		mode: WorkflowExecuteMode,
+		private readonly webhookData: IWebhookData,
+		private readonly closeFunctions: CloseFunction[],
+		private readonly runExecutionData: IRunExecutionData | null,
+	) {
+		super(workflow, node, additionalData, mode);
+
+		this.helpers = {
+			createDeferredPromise,
+			returnJsonArray,
+			...new BinaryHelpers(workflow, additionalData).exported,
+			...new RequestHelpers(this, workflow, node, additionalData).exported,
+		};
+
+		this.nodeHelpers = {
+			copyBinaryFile: async (filePath, fileName, mimeType) =>
+				await copyBinaryFile(
+					this.workflow.id,
+					this.additionalData.executionId!,
+					filePath,
+					fileName,
+					mimeType,
+				),
+		};
+	}
+
+	async getCredentials<T extends object = ICredentialDataDecryptedObject>(type: string) {
+		return await getCredentials<T>(this.workflow, this.node, type, this.additionalData, this.mode);
+	}
+
+	getBodyData() {
+		if (this.additionalData.httpRequest === undefined) {
+			throw new ApplicationError('Request is missing');
+		}
+		return this.additionalData.httpRequest.body as IDataObject;
+	}
+
+	getHeaderData() {
+		if (this.additionalData.httpRequest === undefined) {
+			throw new ApplicationError('Request is missing');
+		}
+		return this.additionalData.httpRequest.headers;
+	}
+
+	getParamsData(): object {
+		if (this.additionalData.httpRequest === undefined) {
+			throw new ApplicationError('Request is missing');
+		}
+		return this.additionalData.httpRequest.params;
+	}
+
+	getQueryData(): object {
+		if (this.additionalData.httpRequest === undefined) {
+			throw new ApplicationError('Request is missing');
+		}
+		return this.additionalData.httpRequest.query;
+	}
+
+	getRequestObject(): Request {
+		if (this.additionalData.httpRequest === undefined) {
+			throw new ApplicationError('Request is missing');
+		}
+		return this.additionalData.httpRequest;
+	}
+
+	getResponseObject(): Response {
+		if (this.additionalData.httpResponse === undefined) {
+			throw new ApplicationError('Response is missing');
+		}
+		return this.additionalData.httpResponse;
+	}
+
+	getNodeWebhookUrl(name: string): string | undefined {
+		return getNodeWebhookUrl(
+			name,
+			this.workflow,
+			this.node,
+			this.additionalData,
+			this.mode,
+			getAdditionalKeys(this.additionalData, this.mode, null),
+		);
+	}
+
+	getWebhookName() {
+		return this.webhookData.webhookDescription.name;
+	}
+
+	async getInputConnectionData(inputName: NodeConnectionType, itemIndex: number): Promise<unknown> {
+		// To be able to use expressions like "$json.sessionId" set the
+		// body data the webhook received to what is normally used for
+		// incoming node data.
+		const connectionInputData: INodeExecutionData[] = [
+			// eslint-disable-next-line @typescript-eslint/no-unsafe-assignment
+			{ json: this.additionalData.httpRequest?.body || {} },
+		];
+		const runExecutionData: IRunExecutionData = {
+			resultData: {
+				runData: {},
+			},
+		};
+		const executeData: IExecuteData = {
+			data: {
+				main: [connectionInputData],
+			},
+			node: this.node,
+			source: null,
+		};
+		const runIndex = 0;
+
+		return await getInputConnectionData.call(
+			this,
+			this.workflow,
+			runExecutionData,
+			runIndex,
+			connectionInputData,
+			{} as ITaskDataConnections,
+			this.additionalData,
+			executeData,
+			this.mode,
+			this.closeFunctions,
+			inputName,
+			itemIndex,
+		);
+	}
+
+	evaluateExpression(expression: string, evaluateItemIndex?: number) {
+		const itemIndex = evaluateItemIndex ?? 0;
+		const runIndex = 0;
+
+		let connectionInputData: INodeExecutionData[] = [];
+		let executionData: IExecuteData | undefined;
+
+		if (this.runExecutionData?.executionData !== undefined) {
+			executionData = this.runExecutionData.executionData.nodeExecutionStack[0];
+
+			if (executionData !== undefined) {
+				connectionInputData = executionData.data.main[0]!;
+			}
+		}
+
+		const additionalKeys = getAdditionalKeys(this.additionalData, this.mode, this.runExecutionData);
+
+		return this.workflow.expression.resolveSimpleParameterValue(
+			`=${expression}`,
+			{},
+			this.runExecutionData,
+			runIndex,
+			itemIndex,
+			this.node.name,
+			connectionInputData,
+			this.mode,
+			additionalKeys,
+			executionData,
+		);
+	}
+
+	getNodeParameter(
+		parameterName: string,
+		// eslint-disable-next-line @typescript-eslint/no-explicit-any
+		fallbackValue?: any,
+		options?: IGetNodeParameterOptions,
+	): NodeParameterValueType | object {
+		const itemIndex = 0;
+		const runIndex = 0;
+
+		let connectionInputData: INodeExecutionData[] = [];
+		let executionData: IExecuteData | undefined;
+
+		if (this.runExecutionData?.executionData !== undefined) {
+			executionData = this.runExecutionData.executionData.nodeExecutionStack[0];
+
+			if (executionData !== undefined) {
+				connectionInputData = executionData.data.main[0]!;
+			}
+		}
+
+		const additionalKeys = getAdditionalKeys(this.additionalData, this.mode, this.runExecutionData);
+
+		return getNodeParameter(
+			this.workflow,
+			this.runExecutionData,
+			runIndex,
+			connectionInputData,
+			this.node,
+			parameterName,
+			itemIndex,
+			this.mode,
+			additionalKeys,
+			executionData,
+			fallbackValue,
+			options,
+		);
+	}
+}