mirror of
https://github.com/n8n-io/n8n.git
synced 2024-12-26 05:04:05 -08:00
445 lines
9.5 KiB
TypeScript
445 lines
9.5 KiB
TypeScript
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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} from 'n8n-workflow';
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import { OptionsWithUri } from 'request';
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interface OptionData {
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name: string;
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displayName: string;
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}
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interface OptionDataParamters {
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[key: string]: OptionData;
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}
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export class HttpRequest implements INodeType {
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description: INodeTypeDescription = {
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displayName: 'HTTP Request',
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name: 'httpRequest',
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icon: 'fa:at',
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group: ['input'],
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version: 1,
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description: 'Makes a HTTP request and returns the received data',
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defaults: {
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name: 'Http Request',
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color: '#2200DD',
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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: [
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'basicAuth',
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],
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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: [
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'headerAuth',
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],
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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: '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: 'The way to authenticate.',
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},
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{
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displayName: '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: '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: '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 request method to use.',
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},
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{
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displayName: 'URL',
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name: 'url',
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type: 'string',
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default: '',
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placeholder: 'http://example.com/index.html',
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description: 'The URL to make the request to.',
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required: true,
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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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name: 'XML (not implemented)',
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value: 'xml'
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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: 'JSON Parameters',
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name: 'jsonParameters',
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type: 'boolean',
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default: false,
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description: 'If the query and/or body parameter should be set via the UI or raw as JSON',
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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: 'headerParametersJson',
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type: 'json',
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displayOptions: {
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show: {
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jsonParameters: [
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true,
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],
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},
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},
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default: '',
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description: 'Header parameters as JSON (flat object).',
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},
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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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displayOptions: {
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show: {
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jsonParameters: [
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false,
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],
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},
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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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// Body Parameter
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{
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displayName: 'Body Parameters',
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name: 'bodyParametersJson',
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type: 'json',
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displayOptions: {
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show: {
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jsonParameters: [
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true,
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],
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requestMethod: [
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'POST',
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],
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},
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},
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default: '',
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description: 'Body parameters as JSON.',
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},
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{
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displayName: 'Body Parameters',
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name: 'bodyParametersUi',
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placeholder: 'Add Parameter',
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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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displayOptions: {
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show: {
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jsonParameters: [
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false,
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],
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requestMethod: [
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'POST',
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],
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},
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},
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description: 'The body parameter 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: 'Parameter',
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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 parameter.',
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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 parameter.',
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},
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]
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},
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],
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},
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// Query Parameter
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{
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displayName: 'Query Parameters',
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name: 'queryParametersJson',
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type: 'json',
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displayOptions: {
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show: {
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jsonParameters: [
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true,
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],
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},
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},
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default: '',
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description: 'Query parameters as JSON (flat object).',
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},
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{
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displayName: 'Query Parameters',
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name: 'queryParametersUi',
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placeholder: 'Add Parameter',
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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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displayOptions: {
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show: {
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jsonParameters: [
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false,
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],
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},
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},
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description: 'The query parameter 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: 'Parameter',
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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 parameter.',
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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 parameter.',
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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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if (items.length === 0) {
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items.push({json: {}});
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}
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// TODO: Should have a setting which makes clear that this parameter can not change for each item
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const requestMethod = this.getNodeParameter('requestMethod', 0) as string;
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const parametersAreJson = this.getNodeParameter('jsonParameters', 0) as boolean;
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const httpBasicAuth = this.getCredentials('httpBasicAuth');
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const httpHeaderAuth = this.getCredentials('httpHeaderAuth');
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let item: INodeExecutionData;
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let url: string, responseFormat: string;
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let requestOptions: OptionsWithUri;
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let setUiParameter: IDataObject;
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const uiParameters: IDataObject = {
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bodyParametersUi: 'body',
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headerParametersUi: 'headers',
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queryParametersUi: 'qs',
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};
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const jsonParameters: OptionDataParamters = {
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bodyParametersJson: {
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name: 'body',
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displayName: 'Body Parameters',
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},
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headerParametersJson: {
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name: 'headers',
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displayName: 'Headers',
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},
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queryParametersJson: {
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name: 'qs',
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displayName: 'Query Paramters',
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},
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};
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for (let itemIndex = 0; itemIndex < items.length; itemIndex++) {
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item = items[itemIndex];
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url = this.getNodeParameter('url', itemIndex) as string;
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responseFormat = this.getNodeParameter('responseFormat', itemIndex) as string;
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requestOptions = {
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headers: {},
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method: requestMethod,
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uri: url,
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};
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if (parametersAreJson === true) {
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// Parameters are defined as JSON
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let optionData: OptionData;
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for (const parameterName of Object.keys(jsonParameters)) {
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optionData = jsonParameters[parameterName] as OptionData;
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const tempValue = this.getNodeParameter(parameterName, itemIndex, {}) as string | object;
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if (tempValue === '') {
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// Paramter is empty so skip it
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continue;
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}
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// @ts-ignore
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requestOptions[optionData.name] = tempValue;
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// @ts-ignore
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if (typeof requestOptions[optionData.name] !== 'object') {
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// If it is not an object it must be JSON so parse it
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try {
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// @ts-ignore
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requestOptions[optionData.name] = JSON.parse(requestOptions[optionData.name]);
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} catch (e) {
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throw new Error(`The data in "${optionData.displayName}" is no valid JSON.`);
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}
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}
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}
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} else {
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// Paramters are defined in UI
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let optionName: string;
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for (const parameterName of Object.keys(uiParameters)) {
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setUiParameter = this.getNodeParameter(parameterName, itemIndex, {}) as IDataObject;
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optionName = uiParameters[parameterName] as string;
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if (setUiParameter.parameter !== undefined) {
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// @ts-ignore
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requestOptions[optionName] = {};
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for (const parameterData of setUiParameter!.parameter as IDataObject[]) {
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// @ts-ignore
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requestOptions[optionName][parameterData!.name as string] = parameterData!.value;
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}
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}
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}
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}
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requestOptions.json = true;
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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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// Now that the options are all set make the actual http request
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const response = await this.helpers.request(requestOptions);
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if (responseFormat === 'json') {
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item.json = response;
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} else if (responseFormat === 'xml') {
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// TODO: Not implemented yet
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} else {
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item.json.reponse = response;
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}
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}
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return this.prepareOutputData(items);
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}
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}
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