n8n/packages/nodes-base/nodes/HttpRequest.node.ts
2020-04-13 22:17:23 +02:00

895 lines
22 KiB
TypeScript

import {
BINARY_ENCODING,
IExecuteFunctions,
} from 'n8n-core';
import {
IDataObject,
INodeExecutionData,
INodeType,
INodeTypeDescription,
IBinaryData,
} from 'n8n-workflow';
import { OptionsWithUri } from 'request';
interface OptionData {
name: string;
displayName: string;
}
interface OptionDataParamters {
[key: string]: OptionData;
}
export class HttpRequest implements INodeType {
description: INodeTypeDescription = {
displayName: 'HTTP Request',
name: 'httpRequest',
icon: 'fa:at',
group: ['input'],
version: 1,
subtitle: '={{$parameter["requestMethod"] + ": " + $parameter["url"]}}',
description: 'Makes a HTTP request and returns the received data',
defaults: {
name: 'HTTP Request',
color: '#2200DD',
},
inputs: ['main'],
outputs: ['main'],
credentials: [
{
name: 'httpBasicAuth',
required: true,
displayOptions: {
show: {
authentication: [
'basicAuth',
],
},
},
},
{
name: 'httpDigestAuth',
required: true,
displayOptions: {
show: {
authentication: [
'digestAuth',
],
},
},
},
{
name: 'httpHeaderAuth',
required: true,
displayOptions: {
show: {
authentication: [
'headerAuth',
],
},
},
},
],
properties: [
{
displayName: 'Authentication',
name: 'authentication',
type: 'options',
options: [
{
name: 'Basic Auth',
value: 'basicAuth'
},
{
name: 'Digest Auth',
value: 'digestAuth'
},
{
name: 'Header Auth',
value: 'headerAuth'
},
{
name: 'None',
value: 'none'
},
],
default: 'none',
description: 'The way to authenticate.',
},
{
displayName: 'Request Method',
name: 'requestMethod',
type: 'options',
options: [
{
name: 'DELETE',
value: 'DELETE'
},
{
name: 'GET',
value: 'GET'
},
{
name: 'HEAD',
value: 'HEAD'
},
{
name: 'PATCH',
value: 'PATCH'
},
{
name: 'POST',
value: 'POST'
},
{
name: 'PUT',
value: 'PUT'
},
],
default: 'GET',
description: 'The request method to use.',
},
{
displayName: 'URL',
name: 'url',
type: 'string',
default: '',
placeholder: 'http://example.com/index.html',
description: 'The URL to make the request to.',
required: true,
},
{
displayName: 'Ignore SSL Issues',
name: 'allowUnauthorizedCerts',
type: 'boolean',
default: false,
description: 'Still download the response even if SSL certificate validation is not possible.',
},
{
displayName: 'Response Format',
name: 'responseFormat',
type: 'options',
options: [
{
name: 'File',
value: 'file'
},
{
name: 'JSON',
value: 'json'
},
{
name: 'String',
value: 'string'
},
],
default: 'json',
description: 'The format in which the data gets returned from the URL.',
},
{
displayName: 'Property Name',
name: 'dataPropertyName',
type: 'string',
default: 'data',
required: true,
displayOptions: {
show: {
responseFormat: [
'string',
],
},
},
description: 'Name of the property to which to write the response data.',
},
{
displayName: 'Binary Property',
name: 'dataPropertyName',
type: 'string',
default: 'data',
required: true,
displayOptions: {
show: {
responseFormat: [
'file',
],
},
},
description: 'Name of the binary property to which to<br />write the data of the read file.',
},
{
displayName: 'JSON/RAW Parameters',
name: 'jsonParameters',
type: 'boolean',
default: false,
description: 'If the query and/or body parameter should be set via the value-key pair UI or JSON/RAW.',
},
{
displayName: 'Options',
name: 'options',
type: 'collection',
placeholder: 'Add Option',
default: {},
options: [
{
displayName: 'Body Content Type',
name: 'bodyContentType',
type: 'options',
displayOptions: {
show: {
'/requestMethod': [
'PATCH',
'POST',
'PUT',
],
},
},
options: [
{
name: 'JSON',
value: 'json'
},
{
name: 'RAW/Custom',
value: 'raw'
},
{
name: 'Form-Data Multipart',
value: 'multipart-form-data'
},
{
name: 'Form Urlencoded',
value: 'form-urlencoded'
},
],
default: 'json',
description: 'Content-Type to use to send body parameters.',
},
{
displayName: 'MIME Type',
name: 'bodyContentCustomMimeType',
type: 'string',
default: '',
placeholder: 'text/xml',
description: 'Specify the mime type for raw/custom body type.',
required: false,
displayOptions: {
show: {
'/requestMethod': [
'PATCH',
'POST',
'PUT',
],
},
},
},
{
displayName: 'Full Response',
name: 'fullResponse',
type: 'boolean',
default: false,
description: 'Returns the full reponse data instead of only the body.',
},
{
displayName: 'Follow Redirect',
name: 'followRedirect',
type: 'boolean',
default: true,
description: 'Follow HTTP 3xx redirects.',
},
{
displayName: 'Ignore Response Code',
name: 'ignoreResponseCode',
type: 'boolean',
default: false,
description: 'Succeeds also when status code is not 2xx.',
},
{
displayName: 'Proxy',
name: 'proxy',
type: 'string',
default: '',
placeholder: 'http://myproxy:3128',
description: 'HTTP proxy to use.',
},
{
displayName: 'Timeout',
name: 'timeout',
type: 'number',
typeOptions: {
minValue: 1,
},
default: 10000,
description: 'Time in ms to wait for the server to send response headers (and start the response body) before aborting the request.',
},
],
},
// Body Parameter
{
displayName: 'Send Binary Data',
name: 'sendBinaryData',
type: 'boolean',
displayOptions: {
show: {
// TODO: Make it possible to use dot-notation
// 'options.bodyContentType': [
// 'raw',
// ],
jsonParameters: [
true,
],
requestMethod: [
'PATCH',
'POST',
'PUT',
],
},
},
default: false,
description: 'If binary data should be send as body.',
},
{
displayName: 'Binary Property',
name: 'binaryPropertyName',
type: 'string',
required: true,
default: 'data',
displayOptions: {
hide: {
sendBinaryData: [
false,
],
},
show: {
jsonParameters: [
true,
],
requestMethod: [
'PATCH',
'POST',
'PUT',
],
},
},
description: `Name of the binary property which contains the data for the file to be uploaded.<br />
For Form-Data Multipart, multiple can be provided in the format:<br />
"sendKey1:binaryProperty1,sendKey2:binaryProperty2`,
},
{
displayName: 'Body Parameters',
name: 'bodyParametersJson',
type: 'json',
displayOptions: {
hide: {
sendBinaryData: [
true,
],
},
show: {
jsonParameters: [
true,
],
requestMethod: [
'PATCH',
'POST',
'PUT',
],
},
},
default: '',
description: 'Body parameters as JSON or RAW.',
},
{
displayName: 'Body Parameters',
name: 'bodyParametersUi',
placeholder: 'Add Parameter',
type: 'fixedCollection',
typeOptions: {
multipleValues: true,
},
displayOptions: {
show: {
jsonParameters: [
false,
],
requestMethod: [
'PATCH',
'POST',
'PUT',
],
},
},
description: 'The body parameter to send.',
default: {},
options: [
{
name: 'parameter',
displayName: 'Parameter',
values: [
{
displayName: 'Name',
name: 'name',
type: 'string',
default: '',
description: 'Name of the parameter.',
},
{
displayName: 'Value',
name: 'value',
type: 'string',
default: '',
description: 'Value of the parameter.',
},
]
},
],
},
// Header Parameters
{
displayName: 'Headers',
name: 'headerParametersJson',
type: 'json',
displayOptions: {
show: {
jsonParameters: [
true,
],
},
},
default: '',
description: 'Header parameters as JSON or RAW.',
},
{
displayName: 'Headers',
name: 'headerParametersUi',
placeholder: 'Add Header',
type: 'fixedCollection',
typeOptions: {
multipleValues: true,
},
displayOptions: {
show: {
jsonParameters: [
false,
],
},
},
description: 'The headers to send.',
default: {},
options: [
{
name: 'parameter',
displayName: 'Header',
values: [
{
displayName: 'Name',
name: 'name',
type: 'string',
default: '',
description: 'Name of the header.',
},
{
displayName: 'Value',
name: 'value',
type: 'string',
default: '',
description: 'Value to set for the header.',
},
]
},
],
},
// Query Parameter
{
displayName: 'Query Parameters',
name: 'queryParametersJson',
type: 'json',
displayOptions: {
show: {
jsonParameters: [
true,
],
},
},
default: '',
description: 'Query parameters as JSON (flat object).',
},
{
displayName: 'Query Parameters',
name: 'queryParametersUi',
placeholder: 'Add Parameter',
type: 'fixedCollection',
typeOptions: {
multipleValues: true,
},
displayOptions: {
show: {
jsonParameters: [
false,
],
},
},
description: 'The query parameter to send.',
default: {},
options: [
{
name: 'parameter',
displayName: 'Parameter',
values: [
{
displayName: 'Name',
name: 'name',
type: 'string',
default: '',
description: 'Name of the parameter.',
},
{
displayName: 'Value',
name: 'value',
type: 'string',
default: '',
description: 'Value of the parameter.',
},
]
},
],
},
]
};
async execute(this: IExecuteFunctions): Promise<INodeExecutionData[][]> {
const items = this.getInputData();
const fullReponseProperties = [
'body',
'headers',
'statusCode',
'statusMessage',
];
// TODO: Should have a setting which makes clear that this parameter can not change for each item
const requestMethod = this.getNodeParameter('requestMethod', 0) as string;
const parametersAreJson = this.getNodeParameter('jsonParameters', 0) as boolean;
const responseFormat = this.getNodeParameter('responseFormat', 0) as string;
const httpBasicAuth = this.getCredentials('httpBasicAuth');
const httpDigestAuth = this.getCredentials('httpDigestAuth');
const httpHeaderAuth = this.getCredentials('httpHeaderAuth');
let requestOptions: OptionsWithUri;
let setUiParameter: IDataObject;
const uiParameters: IDataObject = {
bodyParametersUi: 'body',
headerParametersUi: 'headers',
queryParametersUi: 'qs',
};
const jsonParameters: OptionDataParamters = {
bodyParametersJson: {
name: 'body',
displayName: 'Body Parameters',
},
headerParametersJson: {
name: 'headers',
displayName: 'Headers',
},
queryParametersJson: {
name: 'qs',
displayName: 'Query Paramters',
},
};
let response: any; // tslint:disable-line:no-any
const returnItems: INodeExecutionData[] = [];
for (let itemIndex = 0; itemIndex < items.length; itemIndex++) {
const options = this.getNodeParameter('options', itemIndex, {}) as IDataObject;
const url = this.getNodeParameter('url', itemIndex) as string;
const fullResponse = !!options.fullResponse as boolean;
requestOptions = {
headers: {},
method: requestMethod,
uri: url,
gzip: true,
rejectUnauthorized: !this.getNodeParameter('allowUnauthorizedCerts', itemIndex, false) as boolean,
};
if (fullResponse === true) {
// @ts-ignore
requestOptions.resolveWithFullResponse = true;
}
if (options.followRedirect !== undefined) {
requestOptions.followRedirect = options.followRedirect as boolean;
}
if (options.ignoreResponseCode === true) {
// @ts-ignore
requestOptions.simple = false;
}
if (options.proxy !== undefined) {
requestOptions.proxy = options.proxy as string;
}
if (options.timeout !== undefined) {
requestOptions.timeout = options.timeout as number;
}
if (parametersAreJson === true) {
// Parameters are defined as JSON
let optionData: OptionData;
for (const parameterName of Object.keys(jsonParameters)) {
optionData = jsonParameters[parameterName] as OptionData;
const tempValue = this.getNodeParameter(parameterName, itemIndex, {}) as string | object;
if (tempValue === '') {
// Paramter is empty so skip it
continue;
}
const sendBinaryData = this.getNodeParameter('sendBinaryData', itemIndex, false) as boolean;
if (optionData.name === 'body' && parametersAreJson === true) {
if (sendBinaryData === true) {
const contentTypesAllowed = [
'raw',
'multipart-form-data',
];
if (!contentTypesAllowed.includes(options.bodyContentType as string)) {
// As n8n-workflow.NodeHelpers.getParamterResolveOrder can not be changed
// easily to handle parameters in dot.notation simply error for now.
throw new Error('Sending binary data is only supported when option "Body Content Type" is set to "RAW/CUSTOM" or "FORM-DATA/MULTIPART"!');
}
const item = items[itemIndex];
if (item.binary === undefined) {
throw new Error('No binary data exists on item!');
}
if (options.bodyContentType === 'raw') {
const binaryPropertyName = this.getNodeParameter('binaryPropertyName', itemIndex) as string;
if (item.binary[binaryPropertyName] === undefined) {
throw new Error(`No binary data property "${binaryPropertyName}" does not exists on item!`);
}
const binaryProperty = item.binary[binaryPropertyName] as IBinaryData;
requestOptions.body = Buffer.from(binaryProperty.data, BINARY_ENCODING);
} else if (options.bodyContentType === 'multipart-form-data') {
requestOptions.body = {};
const binaryPropertyNameFull = this.getNodeParameter('binaryPropertyName', itemIndex) as string;
const binaryPropertyNames = binaryPropertyNameFull.split(',').map(key => key.trim());
for (const propertyData of binaryPropertyNames) {
let propertyName = 'file';
let binaryPropertyName = propertyData;
if (propertyData.includes(':')) {
const propertyDataParts = propertyData.split(':');
propertyName = propertyDataParts[0];
binaryPropertyName = propertyDataParts[1];
} else if (binaryPropertyNames.length > 1) {
throw new Error('If more than one property should be send it is needed to define the in the format: "sendKey1:binaryProperty1,sendKey2:binaryProperty2"');
}
if (item.binary[binaryPropertyName] === undefined) {
throw new Error(`No binary data property "${binaryPropertyName}" does not exists on item!`);
}
const binaryProperty = item.binary[binaryPropertyName] as IBinaryData;
requestOptions.body[propertyName] = {
value: Buffer.from(binaryProperty.data, BINARY_ENCODING),
options: {
filename: binaryProperty.fileName,
contentType: binaryProperty.mimeType,
},
};
}
}
continue;
}
}
// @ts-ignore
requestOptions[optionData.name] = tempValue;
// @ts-ignore
if (typeof requestOptions[optionData.name] !== 'object' && options.bodyContentType !== 'raw') {
// If it is not an object && bodyContentType is not 'raw' it must be JSON so parse it
try {
// @ts-ignore
requestOptions[optionData.name] = JSON.parse(requestOptions[optionData.name]);
} catch (e) {
throw new Error(`The data in "${optionData.displayName}" is no valid JSON. Set Body Content Type to "RAW/Custom" for XML or other types of payloads`);
}
}
}
} else {
// Paramters are defined in UI
let optionName: string;
for (const parameterName of Object.keys(uiParameters)) {
setUiParameter = this.getNodeParameter(parameterName, itemIndex, {}) as IDataObject;
optionName = uiParameters[parameterName] as string;
if (setUiParameter.parameter !== undefined) {
// @ts-ignore
requestOptions[optionName] = {};
for (const parameterData of setUiParameter!.parameter as IDataObject[]) {
// @ts-ignore
requestOptions[optionName][parameterData!.name as string] = parameterData!.value;
}
}
}
}
// Change the way data get send in case a different content-type than JSON got selected
if (['PATCH', 'POST', 'PUT'].includes(requestMethod)) {
if (options.bodyContentType === 'multipart-form-data') {
requestOptions.formData = requestOptions.body;
delete requestOptions.body;
} else if (options.bodyContentType === 'form-urlencoded') {
requestOptions.form = requestOptions.body;
delete requestOptions.body;
}
}
// Add Content Type if any are set
if (options.bodyContentCustomMimeType) {
if(requestOptions.headers === undefined) {
requestOptions.headers = {};
}
requestOptions.headers['Content-Type'] = options.bodyContentCustomMimeType;
}
// Add credentials if any are set
if (httpBasicAuth !== undefined) {
requestOptions.auth = {
user: httpBasicAuth.user as string,
pass: httpBasicAuth.password as string,
};
}
if (httpHeaderAuth !== undefined) {
requestOptions.headers![httpHeaderAuth.name as string] = httpHeaderAuth.value;
}
if (httpDigestAuth !== undefined) {
requestOptions.auth = {
user: httpDigestAuth.user as string,
pass: httpDigestAuth.password as string,
sendImmediately: false,
};
}
if (responseFormat === 'json') {
requestOptions.headers!['accept'] = 'application/json,text/*;q=0.99';
} else if (responseFormat === 'string') {
requestOptions.headers!['accept'] = 'application/json,text/html,application/xhtml+xml,application/xml,text/*;q=0.9, */*;q=0.1';
} else {
requestOptions.headers!['accept'] = 'application/json,text/html,application/xhtml+xml,application/xml,text/*;q=0.9, image/*;q=0.8, */*;q=0.7';
}
if (responseFormat === 'file') {
requestOptions.encoding = null;
} else if(options.bodyContentType === 'raw') {
requestOptions.json = false;
} else {
requestOptions.json = true;
}
try {
// Now that the options are all set make the actual http request
response = await this.helpers.request(requestOptions);
} catch (error) {
if (this.continueOnFail() === true) {
returnItems.push({ json: { error } });
continue;
}
throw error;
}
if (responseFormat === 'file') {
const dataPropertyName = this.getNodeParameter('dataPropertyName', 0) as string;
const newItem: INodeExecutionData = {
json: {},
binary: {},
};
if (items[itemIndex].binary !== undefined) {
// Create a shallow copy of the binary data so that the old
// data references which do not get changed still stay behind
// but the incoming data does not get changed.
Object.assign(newItem.binary, items[itemIndex].binary);
}
const fileName = (url).split('/').pop();
if (fullResponse === true) {
const returnItem: IDataObject = {};
for (const property of fullReponseProperties) {
if (property === 'body') {
continue;
}
returnItem[property] = response[property];
}
newItem.json = returnItem;
newItem.binary![dataPropertyName] = await this.helpers.prepareBinaryData(response.body, fileName);
} else {
newItem.json = items[itemIndex].json;
newItem.binary![dataPropertyName] = await this.helpers.prepareBinaryData(response, fileName);
}
items[itemIndex] = newItem;
} else if (responseFormat === 'string') {
const dataPropertyName = this.getNodeParameter('dataPropertyName', 0) as string;
if (fullResponse === true) {
const returnItem: IDataObject = {};
for (const property of fullReponseProperties) {
if (property === 'body') {
returnItem[dataPropertyName] = response[property];
continue;
}
returnItem[property] = response[property];
}
returnItems.push({ json: returnItem });
} else {
returnItems.push({
json: {
[dataPropertyName]: response,
},
});
}
} else {
// responseFormat: 'json'
if (fullResponse === true) {
const returnItem: IDataObject = {};
for (const property of fullReponseProperties) {
returnItem[property] = response[property];
}
if (responseFormat === 'json' && typeof returnItem.body === 'string') {
try {
returnItem.body = JSON.parse(returnItem.body);
} catch (e) {
throw new Error('Response body is not valid JSON. Change "Response Format" to "String"');
}
}
returnItems.push({ json: returnItem });
} else {
if (responseFormat === 'json' && typeof response === 'string') {
try {
response = JSON.parse(response);
} catch (e) {
throw new Error('Response body is not valid JSON. Change "Response Format" to "String"');
}
}
returnItems.push({ json: response });
}
}
}
if (responseFormat === 'file') {
// For file downloads the files get attached to the existing items
return this.prepareOutputData(items);
} else {
// For all other ones does the output items get replaced
return this.prepareOutputData(returnItems);
}
}
}