import { IExecuteFunctions } from 'n8n-core'; import { IDataObject, ILoadOptionsFunctions, INodeExecutionData, INodePropertyOptions, INodeType, INodeTypeDescription, } from 'n8n-workflow'; import { awsApiRequestREST } from './GenericFunctions'; export class AwsLambda implements INodeType { description: INodeTypeDescription = { displayName: 'AWS Lambda', name: 'awsLambda', icon: 'file:lambda.png', group: ['output'], version: 1, subtitle: '={{$parameter["function"]}}', description: 'Invoke functions on AWS Lambda', defaults: { name: 'AWS Lambda', color: '#FF9900', }, inputs: ['main'], outputs: ['main'], credentials: [ { name: 'aws', required: true, } ], properties: [ { displayName: 'Operation', name: 'operation', type: 'options', options: [ { name: 'Invoke', value: 'invoke', description: 'Invoke a function', }, ], default: 'invoke', description: 'The operation to perform.', }, { displayName: 'Function', name: 'function', type: 'options', typeOptions: { loadOptionsMethod: 'getFunctions', }, displayOptions: { show: { operation: [ 'invoke', ], }, }, options: [], default: '', required: true, description: 'The function you want to invoke', }, { displayName: 'Qualifier', name: 'qualifier', type: 'string', displayOptions: { show: { operation: [ 'invoke', ], }, }, required: true, default: '$LATEST', description: 'Specify a version or alias to invoke a published version of the function', }, { displayName: 'Invocation Type', name: 'invocationType', type: 'options', options: [ { name: 'Wait for results', value: 'RequestResponse', description: 'Invoke the function synchronously and wait for the response', }, { name: 'Continue workflow', value: 'Event', description: 'Invoke the function and immediately continue the workflow', }, ], displayOptions: { show: { operation: [ 'invoke', ], }, }, default: 'RequestResponse', description: 'Specify if the workflow should wait for the function to return the results', }, { displayName: 'JSON Input', name: 'payload', type: 'string', displayOptions: { show: { operation: [ 'invoke', ], }, }, default: '', description: 'The JSON that you want to provide to your Lambda function as input', typeOptions: { alwaysOpenEditWindow: true, }, }, ], }; methods = { loadOptions: { async getFunctions(this: ILoadOptionsFunctions): Promise { const returnData: INodePropertyOptions[] = []; let data; try { data = await awsApiRequestREST.call(this, 'lambda', 'GET', '/2015-03-31/functions/'); } catch (err) { throw new Error(`AWS Error: ${err}`); } for (const func of data.Functions!) { returnData.push({ name: func.FunctionName as string, value: func.FunctionArn as string, }); } return returnData; } }, }; async execute(this: IExecuteFunctions): Promise { const items = this.getInputData(); const returnData: IDataObject[] = []; for (let i = 0; i < items.length; i++) { const params = { FunctionName: this.getNodeParameter('function', i) as string, InvocationType: this.getNodeParameter('invocationType', i) as string, Payload: this.getNodeParameter('payload', i) as string, Qualifier: this.getNodeParameter('qualifier', i) as string, }; let responseData; try { responseData = await awsApiRequestREST.call( this, 'lambda', 'POST', `/2015-03-31/functions/${params.FunctionName}/invocations?Qualifier=${params.Qualifier}`, params.Payload, { 'X-Amz-Invocation-Type': params.InvocationType, 'Content-Type': 'application/x-amz-json-1.0', }, ); } catch (err) { throw new Error(`AWS Error: ${err}`); } if (responseData !== null && responseData.errorMessage !== undefined) { let errorMessage = responseData.errorMessage; if (responseData.stackTrace) { errorMessage += `\n\nStack trace:\n${responseData.stackTrace}`; } throw new Error(errorMessage); } else { returnData.push({ result: responseData, } as IDataObject); } } return [this.helpers.returnJsonArray(returnData)]; } }