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476 lines
11 KiB
TypeScript
476 lines
11 KiB
TypeScript
/* eslint-disable n8n-nodes-base/node-filename-against-convention */
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import { IExecuteFunctions } from 'n8n-core';
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import {
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IDataObject,
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INodeExecutionData,
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INodeType,
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INodeTypeDescription,
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JsonObject,
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NodeApiError,
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NodeOperationError,
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} from 'n8n-workflow';
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import { OptionsWithUri } from 'request';
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import { RequestPromiseOptions } from 'request-promise-native';
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export class GraphQL implements INodeType {
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description: INodeTypeDescription = {
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displayName: 'GraphQL',
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name: 'graphql',
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// eslint-disable-next-line n8n-nodes-base/node-class-description-icon-not-svg
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icon: 'file:graphql.png',
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group: ['input'],
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version: 1,
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description: 'Makes a GraphQL request and returns the received data',
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defaults: {
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name: 'GraphQL',
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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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authentication: ['basicAuth'],
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},
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},
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},
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{
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name: 'httpDigestAuth',
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required: true,
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displayOptions: {
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show: {
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authentication: ['digestAuth'],
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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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authentication: ['headerAuth'],
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},
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},
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},
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{
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name: 'httpQueryAuth',
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required: true,
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displayOptions: {
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show: {
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authentication: ['queryAuth'],
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},
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},
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},
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{
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name: 'oAuth1Api',
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required: true,
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displayOptions: {
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show: {
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authentication: ['oAuth1'],
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},
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},
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},
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{
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name: 'oAuth2Api',
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required: true,
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displayOptions: {
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show: {
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authentication: ['oAuth2'],
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},
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},
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},
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],
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properties: [
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{
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displayName: 'Authentication',
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name: 'authentication',
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type: 'options',
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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: 'Digest Auth',
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value: 'digestAuth',
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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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name: 'OAuth1',
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value: 'oAuth1',
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},
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{
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name: 'OAuth2',
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value: 'oAuth2',
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},
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{
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name: 'Query Auth',
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value: 'queryAuth',
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},
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],
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default: 'none',
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description: 'The way to authenticate',
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},
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{
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displayName: 'HTTP Request Method',
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name: 'requestMethod',
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type: 'options',
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options: [
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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: 'POST',
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value: 'POST',
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},
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],
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default: 'POST',
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description: 'The underlying HTTP request method to use',
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},
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{
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displayName: 'Endpoint',
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name: 'endpoint',
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type: 'string',
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default: '',
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placeholder: 'http://example.com/graphql',
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description: 'The GraphQL endpoint',
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required: true,
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},
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{
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displayName: 'Ignore SSL Issues',
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name: 'allowUnauthorizedCerts',
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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-wrong-for-ignore-ssl-issues
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description:
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'Whether to download the response even if SSL certificate validation is not possible',
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},
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{
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displayName: 'Request Format',
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name: 'requestFormat',
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type: 'options',
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required: true,
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options: [
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{
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name: 'GraphQL (Raw)',
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value: 'graphql',
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},
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{
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name: 'JSON',
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value: 'json',
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},
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],
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displayOptions: {
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show: {
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requestMethod: ['POST'],
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},
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},
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default: 'graphql',
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description: 'The format for the query payload',
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},
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{
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displayName: 'Query',
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name: 'query',
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type: 'json',
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default: '',
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description: 'GraphQL query',
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required: true,
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},
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{
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displayName: 'Variables',
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name: 'variables',
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type: 'json',
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default: '',
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description: 'Query variables',
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displayOptions: {
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show: {
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requestFormat: ['json'],
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requestMethod: ['POST'],
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},
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},
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},
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{
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displayName: 'Operation Name',
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name: 'operationName',
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type: 'string',
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default: '',
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description: 'Name of operation to execute',
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displayOptions: {
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show: {
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requestFormat: ['json'],
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requestMethod: ['POST'],
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},
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},
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},
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{
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displayName: 'Response Format',
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name: 'responseFormat',
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type: 'options',
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options: [
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{
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name: 'JSON',
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value: 'json',
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},
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{
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name: 'String',
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value: 'string',
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},
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],
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default: 'json',
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description: 'The format in which the data gets returned from the URL',
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},
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{
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displayName: 'Response Data Property Name',
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name: 'dataPropertyName',
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type: 'string',
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default: 'data',
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required: true,
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displayOptions: {
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show: {
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responseFormat: ['string'],
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},
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},
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description: 'Name of the property to which to write the response data',
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},
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// Header Parameters
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{
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displayName: 'Headers',
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name: 'headerParametersUi',
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placeholder: 'Add Header',
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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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description: 'The headers to send',
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default: {},
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options: [
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{
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name: 'parameter',
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displayName: 'Header',
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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 to set for 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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};
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async execute(this: IExecuteFunctions): Promise<INodeExecutionData[][]> {
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const items = this.getInputData();
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let httpBasicAuth;
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let httpDigestAuth;
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let httpHeaderAuth;
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let httpQueryAuth;
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let oAuth1Api;
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let oAuth2Api;
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try {
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httpBasicAuth = await this.getCredentials('httpBasicAuth');
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} catch (error) {
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// Do nothing
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}
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try {
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httpDigestAuth = await this.getCredentials('httpDigestAuth');
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} catch (error) {
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// Do nothing
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}
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try {
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httpHeaderAuth = await this.getCredentials('httpHeaderAuth');
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} catch (error) {
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// Do nothing
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}
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try {
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httpQueryAuth = await this.getCredentials('httpQueryAuth');
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} catch (error) {
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// Do nothing
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}
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try {
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oAuth1Api = await this.getCredentials('oAuth1Api');
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} catch (error) {
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// Do nothing
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}
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try {
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oAuth2Api = await this.getCredentials('oAuth2Api');
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} catch (error) {
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// Do nothing
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}
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let requestOptions: OptionsWithUri & RequestPromiseOptions;
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const returnItems: INodeExecutionData[] = [];
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for (let itemIndex = 0; itemIndex < items.length; itemIndex++) {
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try {
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const requestMethod = this.getNodeParameter('requestMethod', itemIndex, 'POST') as string;
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const endpoint = this.getNodeParameter('endpoint', itemIndex, '') as string;
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const requestFormat = this.getNodeParameter(
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'requestFormat',
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itemIndex,
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'graphql',
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) as string;
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const responseFormat = this.getNodeParameter('responseFormat', 0) as string;
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const { parameter }: { parameter?: Array<{ name: string; value: string }> } =
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this.getNodeParameter('headerParametersUi', itemIndex, {}) as IDataObject;
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const headerParameters = (parameter || []).reduce(
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(result, item) => ({
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...result,
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[item.name]: item.value,
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}),
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{},
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);
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requestOptions = {
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headers: {
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'content-type': `application/${requestFormat}`,
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...headerParameters,
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},
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method: requestMethod,
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uri: endpoint,
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simple: false,
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rejectUnauthorized: !this.getNodeParameter(
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'allowUnauthorizedCerts',
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itemIndex,
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false,
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) as boolean,
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};
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// Add credentials if any are set
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if (httpBasicAuth !== undefined) {
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requestOptions.auth = {
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user: httpBasicAuth.user as string,
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pass: httpBasicAuth.password as string,
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};
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}
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if (httpHeaderAuth !== undefined) {
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requestOptions.headers![httpHeaderAuth.name as string] = httpHeaderAuth.value;
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}
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if (httpQueryAuth !== undefined) {
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if (!requestOptions.qs) {
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requestOptions.qs = {};
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}
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requestOptions.qs![httpQueryAuth.name as string] = httpQueryAuth.value;
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}
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if (httpDigestAuth !== undefined) {
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requestOptions.auth = {
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user: httpDigestAuth.user as string,
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pass: httpDigestAuth.password as string,
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sendImmediately: false,
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};
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}
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const gqlQuery = this.getNodeParameter('query', itemIndex, '') as string;
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if (requestMethod === 'GET') {
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if (!requestOptions.qs) {
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requestOptions.qs = {};
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}
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requestOptions.qs.query = gqlQuery;
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} else {
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if (requestFormat === 'json') {
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requestOptions.body = {
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query: gqlQuery,
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variables: this.getNodeParameter('variables', itemIndex, {}) as object,
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operationName: this.getNodeParameter('operationName', itemIndex) as string,
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};
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if (typeof requestOptions.body.variables === 'string') {
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try {
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requestOptions.body.variables = JSON.parse(requestOptions.body.variables || '{}');
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} catch (error) {
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throw new NodeOperationError(
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this.getNode(),
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'Using variables failed:\n' +
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requestOptions.body.variables +
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'\n\nWith error message:\n' +
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error,
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{ itemIndex },
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);
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}
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}
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if (requestOptions.body.operationName === '') {
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requestOptions.body.operationName = null;
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}
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requestOptions.json = true;
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} else {
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requestOptions.body = gqlQuery;
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}
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}
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let response;
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// Now that the options are all set make the actual http request
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if (oAuth1Api !== undefined) {
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response = await this.helpers.requestOAuth1.call(this, 'oAuth1Api', requestOptions);
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} else if (oAuth2Api !== undefined) {
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response = await this.helpers.requestOAuth2.call(this, 'oAuth2Api', requestOptions, {
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tokenType: 'Bearer',
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});
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} else {
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response = await this.helpers.request(requestOptions);
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}
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if (responseFormat === 'string') {
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const dataPropertyName = this.getNodeParameter('dataPropertyName', 0) as string;
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returnItems.push({
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json: {
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[dataPropertyName]: response,
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},
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});
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} else {
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if (typeof response === 'string') {
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try {
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response = JSON.parse(response);
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} catch (error) {
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throw new NodeOperationError(
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this.getNode(),
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'Response body is not valid JSON. Change "Response Format" to "String"',
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{ itemIndex },
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);
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}
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}
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if (response.errors) {
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const message =
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response.errors?.map((error: IDataObject) => error.message).join(', ') ||
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'Unexpected error';
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throw new NodeApiError(this.getNode(), response.errors, { message });
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}
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returnItems.push({ json: response });
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}
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} catch (error) {
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if (this.continueOnFail()) {
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returnItems.push({ json: { error: (error as JsonObject).message } });
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continue;
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}
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throw error;
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}
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}
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return this.prepareOutputData(returnItems);
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}
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}
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