mirror of
https://github.com/n8n-io/n8n.git
synced 2024-11-10 22:54:05 -08:00
874 lines
22 KiB
TypeScript
874 lines
22 KiB
TypeScript
import { BINARY_ENCODING, IExecuteFunctions, WAIT_TIME_UNLIMITED } from 'n8n-core';
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import {
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ICredentialDataDecryptedObject,
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IDataObject,
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INodeExecutionData,
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INodeType,
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INodeTypeDescription,
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IWebhookFunctions,
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IWebhookResponseData,
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NodeOperationError,
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} from 'n8n-workflow';
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import fs from 'fs';
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import stream from 'stream';
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import { promisify } from 'util';
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import basicAuth from 'basic-auth';
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import type { Response } from 'express';
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import formidable from 'formidable';
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import isbot from 'isbot';
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import { file as tmpFile } from 'tmp-promise';
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const pipeline = promisify(stream.pipeline);
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function authorizationError(resp: Response, realm: string, responseCode: number, message?: string) {
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if (message === undefined) {
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message = 'Authorization problem!';
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if (responseCode === 401) {
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message = 'Authorization is required!';
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} else if (responseCode === 403) {
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message = 'Authorization data is wrong!';
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}
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}
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resp.writeHead(responseCode, { 'WWW-Authenticate': `Basic realm="${realm}"` });
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resp.end(message);
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return {
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noWebhookResponse: true,
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};
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}
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export class Wait implements INodeType {
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description: INodeTypeDescription = {
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displayName: 'Wait',
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name: 'wait',
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icon: 'fa:pause-circle',
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group: ['organization'],
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version: 1,
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description: 'Wait before continue with execution',
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defaults: {
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name: 'Wait',
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color: '#804050',
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},
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inputs: ['main'],
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outputs: ['main'],
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credentials: [
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{
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name: 'httpBasicAuth',
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required: true,
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displayOptions: {
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show: {
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incomingAuthentication: ['basicAuth'],
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},
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},
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},
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{
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name: 'httpHeaderAuth',
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required: true,
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displayOptions: {
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show: {
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incomingAuthentication: ['headerAuth'],
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},
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},
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},
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],
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webhooks: [
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{
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name: 'default',
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httpMethod: '={{$parameter["httpMethod"]}}',
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isFullPath: true,
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responseCode: '={{$parameter["responseCode"]}}',
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responseMode: '={{$parameter["responseMode"]}}',
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responseData: '={{$parameter["responseData"]}}',
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responseBinaryPropertyName: '={{$parameter["responseBinaryPropertyName"]}}',
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responseContentType: '={{$parameter["options"]["responseContentType"]}}',
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responsePropertyName: '={{$parameter["options"]["responsePropertyName"]}}',
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responseHeaders: '={{$parameter["options"]["responseHeaders"]}}',
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path: '={{$parameter["options"]["webhookSuffix"] || ""}}',
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restartWebhook: true,
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},
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],
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properties: [
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{
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displayName: 'Webhook Authentication',
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name: 'incomingAuthentication',
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type: 'options',
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displayOptions: {
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show: {
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resume: ['webhook'],
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},
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},
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options: [
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{
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name: 'Basic Auth',
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value: 'basicAuth',
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},
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{
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name: 'Header Auth',
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value: 'headerAuth',
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},
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{
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name: 'None',
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value: 'none',
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},
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],
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default: 'none',
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description:
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'If and how incoming resume-webhook-requests to $execution.resumeUrl should be authenticated for additional security',
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},
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{
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displayName: 'Resume',
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name: 'resume',
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type: 'options',
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options: [
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{
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name: 'After Time Interval',
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value: 'timeInterval',
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description: 'Waits for a certain amount of time',
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},
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{
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name: 'At Specified Time',
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value: 'specificTime',
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description: 'Waits until a specific date and time to continue',
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},
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{
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name: 'On Webhook Call',
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value: 'webhook',
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description: 'Waits for a webhook call before continuing',
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},
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],
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default: 'timeInterval',
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description: 'Determines the waiting mode to use before the workflow continues',
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},
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// ----------------------------------
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// resume:specificTime
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// ----------------------------------
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{
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displayName: 'Date and Time',
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name: 'dateTime',
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type: 'dateTime',
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displayOptions: {
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show: {
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resume: ['specificTime'],
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},
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},
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default: '',
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description: 'The date and time to wait for before continuing',
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},
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// ----------------------------------
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// resume:timeInterval
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// ----------------------------------
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{
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displayName: 'Wait Amount',
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name: 'amount',
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type: 'number',
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displayOptions: {
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show: {
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resume: ['timeInterval'],
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},
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},
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typeOptions: {
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minValue: 0,
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numberPrecision: 2,
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},
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default: 1,
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description: 'The time to wait',
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},
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{
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displayName: 'Wait Unit',
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name: 'unit',
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type: 'options',
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displayOptions: {
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show: {
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resume: ['timeInterval'],
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},
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},
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options: [
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{
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name: 'Seconds',
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value: 'seconds',
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},
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{
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name: 'Minutes',
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value: 'minutes',
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},
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{
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name: 'Hours',
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value: 'hours',
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},
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{
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name: 'Days',
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value: 'days',
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},
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],
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default: 'hours',
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description: 'The time unit of the Wait Amount value',
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},
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// ----------------------------------
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// resume:webhook
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// ----------------------------------
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{
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displayName:
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'The webhook URL will be generated at run time. It can be referenced with the <strong>$execution.resumeUrl</strong> variable. Send it somewhere before getting to this node. <a href="https://docs.n8n.io/integrations/builtin/core-nodes/n8n-nodes-base.wait/?utm_source=n8n_app&utm_medium=node_settings_modal-credential_link&utm_campaign=n8n-nodes-base.wait" target="_blank">More info</a>',
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name: 'webhookNotice',
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type: 'notice',
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displayOptions: {
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show: {
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resume: ['webhook'],
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},
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},
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default: '',
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},
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{
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displayName: 'HTTP Method',
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name: 'httpMethod',
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type: 'options',
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displayOptions: {
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show: {
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resume: ['webhook'],
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},
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},
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options: [
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{
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name: 'DELETE',
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value: 'DELETE',
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},
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{
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name: 'GET',
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value: 'GET',
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},
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{
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name: 'HEAD',
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value: 'HEAD',
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},
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{
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name: 'PATCH',
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value: 'PATCH',
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},
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{
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name: 'POST',
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value: 'POST',
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},
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{
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name: 'PUT',
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value: 'PUT',
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},
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],
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default: 'GET',
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description: 'The HTTP method of the Webhook call',
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},
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{
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displayName: 'Response Code',
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name: 'responseCode',
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type: 'number',
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displayOptions: {
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show: {
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resume: ['webhook'],
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},
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},
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typeOptions: {
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minValue: 100,
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maxValue: 599,
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},
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default: 200,
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description: 'The HTTP Response code to return',
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},
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{
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displayName: 'Respond',
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name: 'responseMode',
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type: 'options',
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displayOptions: {
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show: {
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resume: ['webhook'],
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},
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},
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options: [
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{
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name: 'Immediately',
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value: 'onReceived',
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description: 'As soon as this node executes',
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},
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{
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name: 'When Last Node Finishes',
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value: 'lastNode',
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description: 'Returns data of the last-executed node',
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},
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{
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name: "Using 'Respond to Webhook' Node",
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value: 'responseNode',
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description: 'Response defined in that node',
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},
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],
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default: 'onReceived',
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description: 'When and how to respond to the webhook',
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},
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{
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displayName: 'Response Data',
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name: 'responseData',
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type: 'options',
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displayOptions: {
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show: {
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resume: ['webhook'],
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responseMode: ['lastNode'],
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},
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},
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options: [
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{
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name: 'All Entries',
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value: 'allEntries',
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description: 'Returns all the entries of the last node. Always returns an array.',
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},
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{
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name: 'First Entry JSON',
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value: 'firstEntryJson',
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description:
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'Returns the JSON data of the first entry of the last node. Always returns a JSON object.',
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},
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{
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name: 'First Entry Binary',
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value: 'firstEntryBinary',
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description:
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'Returns the binary data of the first entry of the last node. Always returns a binary file.',
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},
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],
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default: 'firstEntryJson',
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description:
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'What data should be returned. If it should return all the items as array or only the first item as object.',
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},
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{
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displayName: 'Property Name',
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name: 'responseBinaryPropertyName',
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type: 'string',
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required: true,
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default: 'data',
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displayOptions: {
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show: {
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resume: ['webhook'],
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responseData: ['firstEntryBinary'],
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},
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},
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description: 'Name of the binary property to return',
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},
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{
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displayName: 'Limit Wait Time',
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name: 'limitWaitTime',
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type: 'boolean',
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default: false,
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// eslint-disable-next-line n8n-nodes-base/node-param-description-boolean-without-whether
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description:
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'If no webhook call is received, the workflow will automatically resume execution after the specified limit type',
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displayOptions: {
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show: {
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resume: ['webhook'],
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},
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},
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},
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{
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displayName: 'Limit Type',
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name: 'limitType',
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type: 'options',
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default: 'afterTimeInterval',
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description:
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'Sets the condition for the execution to resume. Can be a specified date or after some time.',
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displayOptions: {
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show: {
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limitWaitTime: [true],
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resume: ['webhook'],
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},
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},
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options: [
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{
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name: 'After Time Interval',
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description: 'Waits for a certain amount of time',
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value: 'afterTimeInterval',
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},
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{
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name: 'At Specified Time',
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description: 'Waits until the set date and time to continue',
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value: 'atSpecifiedTime',
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},
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],
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},
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{
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displayName: 'Amount',
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name: 'resumeAmount',
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type: 'number',
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displayOptions: {
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show: {
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limitType: ['afterTimeInterval'],
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limitWaitTime: [true],
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resume: ['webhook'],
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},
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},
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typeOptions: {
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minValue: 0,
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numberPrecision: 2,
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},
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default: 1,
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description: 'The time to wait',
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},
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{
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displayName: 'Unit',
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name: 'resumeUnit',
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type: 'options',
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displayOptions: {
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show: {
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limitType: ['afterTimeInterval'],
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limitWaitTime: [true],
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resume: ['webhook'],
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},
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},
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options: [
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{
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name: 'Seconds',
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value: 'seconds',
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},
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{
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name: 'Minutes',
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value: 'minutes',
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},
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{
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name: 'Hours',
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value: 'hours',
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},
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{
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name: 'Days',
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value: 'days',
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},
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],
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default: 'hours',
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description: 'Unit of the interval value',
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},
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{
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displayName: 'Max Date and Time',
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name: 'maxDateAndTime',
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type: 'dateTime',
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displayOptions: {
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show: {
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limitType: ['atSpecifiedTime'],
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limitWaitTime: [true],
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resume: ['webhook'],
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},
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},
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default: '',
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description: 'Continue execution after the specified date and time',
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},
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{
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displayName: 'Options',
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name: 'options',
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type: 'collection',
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displayOptions: {
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show: {
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resume: ['webhook'],
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},
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},
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placeholder: 'Add Option',
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default: {},
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options: [
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{
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displayName: 'Binary Data',
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name: 'binaryData',
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type: 'boolean',
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displayOptions: {
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show: {
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'/httpMethod': ['PATCH', 'PUT', 'POST'],
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},
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},
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default: false,
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description: 'Whether the webhook will receive binary data',
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},
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{
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displayName: 'Binary Property',
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name: 'binaryPropertyName',
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type: 'string',
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default: 'data',
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displayOptions: {
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show: {
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binaryData: [true],
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},
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},
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description:
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'Name of the binary property to which to write the data of the received file. If the data gets received via "Form-Data Multipart" it will be the prefix and a number starting with 0 will be attached to it.',
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},
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{
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displayName: 'Ignore Bots',
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name: 'ignoreBots',
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type: 'boolean',
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default: false,
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description:
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'Whether to ignore requests from bots like link previewers and web crawlers',
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},
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{
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displayName: 'Response Data',
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name: 'responseData',
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type: 'string',
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displayOptions: {
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show: {
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'/responseMode': ['onReceived'],
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},
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},
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default: '',
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placeholder: 'success',
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description: 'Custom response data to send',
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},
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{
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displayName: 'Response Content-Type',
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name: 'responseContentType',
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type: 'string',
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displayOptions: {
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show: {
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'/responseData': ['firstEntryJson'],
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'/responseMode': ['lastNode'],
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},
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},
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default: '',
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placeholder: 'application/xml',
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// eslint-disable-next-line n8n-nodes-base/node-param-description-miscased-json
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description:
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'Set a custom content-type to return if another one as the "application/json" should be returned',
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},
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{
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displayName: 'Response Headers',
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name: 'responseHeaders',
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placeholder: 'Add Response Header',
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description: 'Add headers to the webhook response',
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type: 'fixedCollection',
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typeOptions: {
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multipleValues: true,
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},
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default: {},
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options: [
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{
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name: 'entries',
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displayName: 'Entries',
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values: [
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{
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displayName: 'Name',
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name: 'name',
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type: 'string',
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default: '',
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description: 'Name of the header',
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},
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{
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displayName: 'Value',
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name: 'value',
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type: 'string',
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default: '',
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description: 'Value of the header',
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},
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],
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},
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],
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},
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{
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displayName: 'Property Name',
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name: 'responsePropertyName',
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type: 'string',
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displayOptions: {
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show: {
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'/responseData': ['firstEntryJson'],
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'/responseMode': ['lastNode'],
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},
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},
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default: 'data',
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description: 'Name of the property to return the data of instead of the whole JSON',
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},
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{
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displayName: 'Webhook Suffix',
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name: 'webhookSuffix',
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type: 'string',
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default: '',
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placeholder: 'webhook',
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description:
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'This suffix path will be appended to the restart URL. Helpful when using multiple wait nodes. Note: Does not support expressions.',
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},
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// {
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// displayName: 'Raw Body',
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// name: 'rawBody',
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// type: 'boolean',
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// displayOptions: {
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// hide: {
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// binaryData: [
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// true,
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// ],
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// },
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// },
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// default: false,
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// description: 'Raw body (binary)',
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// },
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],
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},
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],
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};
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|
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async webhook(this: IWebhookFunctions): Promise<IWebhookResponseData> {
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|
// INFO: Currently (20.06.2021) 100% identical with Webook-Node
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const incomingAuthentication = this.getNodeParameter('incomingAuthentication') as string;
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const options = this.getNodeParameter('options', {}) as IDataObject;
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const req = this.getRequestObject();
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const resp = this.getResponseObject();
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const headers = this.getHeaderData();
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const realm = 'Webhook';
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|
|
const ignoreBots = options.ignoreBots as boolean;
|
|
if (ignoreBots && isbot((headers as IDataObject)['user-agent'] as string)) {
|
|
return authorizationError(resp, realm, 403);
|
|
}
|
|
|
|
if (incomingAuthentication === 'basicAuth') {
|
|
// Basic authorization is needed to call webhook
|
|
let httpBasicAuth: ICredentialDataDecryptedObject | undefined;
|
|
|
|
try {
|
|
httpBasicAuth = await this.getCredentials('httpBasicAuth');
|
|
} catch (error) {
|
|
// Do nothing
|
|
}
|
|
|
|
if (httpBasicAuth === undefined || !httpBasicAuth.user || !httpBasicAuth.password) {
|
|
// Data is not defined on node so can not authenticate
|
|
return authorizationError(resp, realm, 500, 'No authentication data defined on node!');
|
|
}
|
|
|
|
const basicAuthData = basicAuth(req);
|
|
|
|
if (basicAuthData === undefined) {
|
|
// Authorization data is missing
|
|
return authorizationError(resp, realm, 401);
|
|
}
|
|
|
|
if (
|
|
basicAuthData.name !== httpBasicAuth!.user ||
|
|
basicAuthData.pass !== httpBasicAuth!.password
|
|
) {
|
|
// Provided authentication data is wrong
|
|
return authorizationError(resp, realm, 403);
|
|
}
|
|
} else if (incomingAuthentication === 'headerAuth') {
|
|
// Special header with value is needed to call webhook
|
|
let httpHeaderAuth: ICredentialDataDecryptedObject | undefined;
|
|
|
|
try {
|
|
httpHeaderAuth = await this.getCredentials('httpHeaderAuth');
|
|
} catch (error) {
|
|
// Do nothing
|
|
}
|
|
|
|
if (httpHeaderAuth === undefined || !httpHeaderAuth.name || !httpHeaderAuth.value) {
|
|
// Data is not defined on node so can not authenticate
|
|
return authorizationError(resp, realm, 500, 'No authentication data defined on node!');
|
|
}
|
|
const headerName = (httpHeaderAuth.name as string).toLowerCase();
|
|
const headerValue = httpHeaderAuth.value as string;
|
|
|
|
if (
|
|
!headers.hasOwnProperty(headerName) ||
|
|
(headers as IDataObject)[headerName] !== headerValue
|
|
) {
|
|
// Provided authentication data is wrong
|
|
return authorizationError(resp, realm, 403);
|
|
}
|
|
}
|
|
|
|
const mimeType = headers['content-type'] ?? 'application/json';
|
|
if (mimeType.includes('multipart/form-data')) {
|
|
const form = new formidable.IncomingForm({ multiples: true });
|
|
|
|
return new Promise((resolve, _reject) => {
|
|
form.parse(req, async (err, data, files) => {
|
|
const returnItem: INodeExecutionData = {
|
|
binary: {},
|
|
json: {
|
|
headers,
|
|
params: this.getParamsData(),
|
|
query: this.getQueryData(),
|
|
body: data,
|
|
},
|
|
};
|
|
|
|
let count = 0;
|
|
for (const xfile of Object.keys(files)) {
|
|
const processFiles: formidable.File[] = [];
|
|
let multiFile = false;
|
|
if (Array.isArray(files[xfile])) {
|
|
processFiles.push(...(files[xfile] as formidable.File[]));
|
|
multiFile = true;
|
|
} else {
|
|
processFiles.push(files[xfile] as formidable.File);
|
|
}
|
|
|
|
let fileCount = 0;
|
|
for (const file of processFiles) {
|
|
let binaryPropertyName = xfile;
|
|
if (binaryPropertyName.endsWith('[]')) {
|
|
binaryPropertyName = binaryPropertyName.slice(0, -2);
|
|
}
|
|
if (multiFile === true) {
|
|
binaryPropertyName += fileCount++;
|
|
}
|
|
if (options.binaryPropertyName) {
|
|
binaryPropertyName = `${options.binaryPropertyName}${count}`;
|
|
}
|
|
|
|
const fileJson = file.toJSON();
|
|
returnItem.binary![binaryPropertyName] = await this.helpers.copyBinaryFile(
|
|
file.path,
|
|
fileJson.name || fileJson.filename,
|
|
fileJson.type as string,
|
|
);
|
|
|
|
count += 1;
|
|
}
|
|
}
|
|
resolve({
|
|
workflowData: [[returnItem]],
|
|
});
|
|
});
|
|
});
|
|
}
|
|
|
|
if (options.binaryData === true) {
|
|
const binaryFile = await tmpFile({ prefix: 'n8n-webhook-' });
|
|
|
|
try {
|
|
await pipeline(req, fs.createWriteStream(binaryFile.path));
|
|
|
|
const returnItem: INodeExecutionData = {
|
|
binary: {},
|
|
json: {
|
|
headers,
|
|
params: this.getParamsData(),
|
|
query: this.getQueryData(),
|
|
body: this.getBodyData(),
|
|
},
|
|
};
|
|
|
|
const binaryPropertyName = (options.binaryPropertyName || 'data') as string;
|
|
returnItem.binary![binaryPropertyName] = await this.helpers.copyBinaryFile(
|
|
binaryFile.path,
|
|
mimeType,
|
|
);
|
|
|
|
return {
|
|
workflowData: [[returnItem]],
|
|
};
|
|
} catch (error) {
|
|
throw new NodeOperationError(this.getNode(), error);
|
|
} finally {
|
|
await binaryFile.cleanup();
|
|
}
|
|
}
|
|
|
|
const response: INodeExecutionData = {
|
|
json: {
|
|
headers,
|
|
params: this.getParamsData(),
|
|
query: this.getQueryData(),
|
|
body: this.getBodyData(),
|
|
},
|
|
};
|
|
|
|
if (options.rawBody) {
|
|
response.binary = {
|
|
data: {
|
|
data: req.rawBody.toString(BINARY_ENCODING),
|
|
mimeType,
|
|
},
|
|
};
|
|
}
|
|
|
|
let webhookResponse: string | undefined;
|
|
if (options.responseData) {
|
|
webhookResponse = options.responseData as string;
|
|
}
|
|
|
|
return {
|
|
webhookResponse,
|
|
workflowData: [[response]],
|
|
};
|
|
}
|
|
|
|
async execute(this: IExecuteFunctions): Promise<INodeExecutionData[][]> {
|
|
const resume = this.getNodeParameter('resume', 0) as string;
|
|
|
|
if (resume === 'webhook') {
|
|
let waitTill = new Date(WAIT_TIME_UNLIMITED);
|
|
|
|
const limitWaitTime = this.getNodeParameter('limitWaitTime', 0);
|
|
|
|
if (limitWaitTime === true) {
|
|
const limitType = this.getNodeParameter('limitType', 0);
|
|
if (limitType === 'afterTimeInterval') {
|
|
let waitAmount = this.getNodeParameter('resumeAmount', 0) as number;
|
|
const resumeUnit = this.getNodeParameter('resumeUnit', 0);
|
|
if (resumeUnit === 'minutes') {
|
|
waitAmount *= 60;
|
|
}
|
|
if (resumeUnit === 'hours') {
|
|
waitAmount *= 60 * 60;
|
|
}
|
|
if (resumeUnit === 'days') {
|
|
waitAmount *= 60 * 60 * 24;
|
|
}
|
|
|
|
waitAmount *= 1000;
|
|
|
|
waitTill = new Date(new Date().getTime() + waitAmount);
|
|
} else {
|
|
waitTill = new Date(this.getNodeParameter('maxDateAndTime', 0) as string);
|
|
}
|
|
}
|
|
|
|
await this.putExecutionToWait(waitTill);
|
|
|
|
return [this.getInputData()];
|
|
}
|
|
|
|
let waitTill: Date;
|
|
if (resume === 'timeInterval') {
|
|
const unit = this.getNodeParameter('unit', 0) as string;
|
|
|
|
let waitAmount = this.getNodeParameter('amount', 0) as number;
|
|
if (unit === 'minutes') {
|
|
waitAmount *= 60;
|
|
}
|
|
if (unit === 'hours') {
|
|
waitAmount *= 60 * 60;
|
|
}
|
|
if (unit === 'days') {
|
|
waitAmount *= 60 * 60 * 24;
|
|
}
|
|
|
|
waitAmount *= 1000;
|
|
|
|
waitTill = new Date(new Date().getTime() + waitAmount);
|
|
} else {
|
|
// resume: dateTime
|
|
const dateTime = this.getNodeParameter('dateTime', 0) as string;
|
|
|
|
waitTill = new Date(dateTime);
|
|
}
|
|
|
|
const waitValue = Math.max(waitTill.getTime() - new Date().getTime(), 0);
|
|
|
|
if (waitValue < 65000) {
|
|
// If wait time is shorter than 65 seconds leave execution active because
|
|
// we just check the database every 60 seconds.
|
|
return new Promise((resolve, _reject) => {
|
|
setTimeout(() => {
|
|
resolve([this.getInputData()]);
|
|
}, waitValue);
|
|
});
|
|
}
|
|
|
|
// If longer than 60 seconds put execution to wait
|
|
await this.putExecutionToWait(waitTill);
|
|
|
|
return [this.getInputData()];
|
|
}
|
|
}
|