import { IExecuteFunctions } from 'n8n-core'; import { IDataObject, INodeExecutionData, INodeType, INodeTypeDescription, } 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, 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: '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
write the data of the read file.', }, { displayName: 'JSON Parameters', name: 'jsonParameters', type: 'boolean', default: false, description: 'If the query and/or body parameter should be set via the UI or raw as JSON', }, { displayName: 'Options', name: 'options', type: 'collection', placeholder: 'Add Option', default: {}, options: [ { 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.', }, ], }, // Header Parameters { displayName: 'Headers', name: 'headerParametersJson', type: 'json', displayOptions: { show: { jsonParameters: [ true, ], }, }, default: '', description: 'Header parameters as JSON (flat object).', }, { 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.', }, ] }, ], }, // Body Parameter { displayName: 'Body Parameters', name: 'bodyParametersJson', type: 'json', displayOptions: { show: { jsonParameters: [ true, ], requestMethod: [ 'POST', 'PUT', ], }, }, default: '', description: 'Body parameters as JSON.', }, { displayName: 'Body Parameters', name: 'bodyParametersUi', placeholder: 'Add Parameter', type: 'fixedCollection', typeOptions: { multipleValues: true, }, displayOptions: { show: { jsonParameters: [ false, ], requestMethod: [ '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.', }, ] }, ], }, // 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 { 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', }, }; const returnItems: INodeExecutionData[] = []; for (let itemIndex = 0; itemIndex < items.length; itemIndex++) { const options = this.getNodeParameter('options', 0, {}) as IDataObject; const url = this.getNodeParameter('url', itemIndex) as string; const fullResponse = !!options.fullResponse as boolean; requestOptions = { headers: {}, method: requestMethod, uri: url, 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; } // @ts-ignore requestOptions[optionData.name] = tempValue; // @ts-ignore if (typeof requestOptions[optionData.name] !== 'object') { // If it is not an object 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.`); } } } } 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; } } } } // 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 === 'file') { requestOptions.encoding = null; } else { requestOptions.json = true; } // Now that the options are all set make the actual http request const response = await this.helpers.request(requestOptions); 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 (typeof returnItem.body === 'string') { throw new Error('Response body is not valid JSON. Change "Response Format" to "String"'); } returnItems.push({ json: returnItem }); } else { if (typeof response === 'string') { 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); } } }