Implement node for AWS Lambda

packages/nodes-base/nodes/Aws/AwsLambda.node.ts

@@ -0,0 +1,145 @@
+import { IExecuteFunctions } from 'n8n-core';
+import {
+	INodeTypeDescription,
+	INodeExecutionData,
+	INodeType,
+	INodePropertyOptions,
+	ILoadOptionsFunctions,
+	IDataObject
+} from 'n8n-workflow';
+
+import { awsConfigCredentials } from './GenericFunctions';
+
+import { Lambda } from 'aws-sdk';
+
+export class AwsLambda implements INodeType {
+	description: INodeTypeDescription = {
+		displayName: 'AWS Lambda',
+		name: 'awsLambda',
+		icon: 'file:lambda.png',
+		group: ['output'],
+		version: 1,
+		subtitle: '={{$parameter["function"]}}',
+		description: 'Invoke functions on AWS Lambda',
+		defaults: {
+			name: 'AWS Lambda',
+			color: '#FF9900',
+		},
+		inputs: ['main'],
+		outputs: ['main'],
+		credentials: [
+			{
+				name: 'aws',
+				required: true,
+			}
+		],
+		properties: [
+			{
+				displayName: 'Function',
+				name: 'function',
+				type: 'options',
+				typeOptions: {
+					loadOptionsMethod: 'getFunctions',
+				},
+				options: [],
+				default: '',
+				required: true,
+				description: 'The function you want to invoke',
+			},
+            {
+                displayName: 'Qualifier',
+                name: 'qualifier',
+                type: 'string',
+                required: true,
+                default: '$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',
+                    },
+                ],
+                default: 'RequestResponse',
+                description: 'Specify if the workflow should wait for the function to return the results',
+            },
+			{
+				displayName: 'JSON Input',
+				name: 'payload',
+				type: 'string',
+				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<INodePropertyOptions[]> {
+				await awsConfigCredentials.call(this);
+
+				const returnData: INodePropertyOptions[] = [];
+
+				let lambda = new Lambda();
+				try {
+					var data = await lambda.listFunctions({}).promise();
+				} catch (err) {
+					throw new Error(`AWS Error: ${err}`);
+				}
+
+				for (let func of data.Functions!) {
+					returnData.push({
+						name: func.FunctionName as string,
+						value: func.FunctionArn as string,
+					});
+				}
+				return returnData;
+			}
+		},
+	};
+
+
+	async execute(this: IExecuteFunctions): Promise<INodeExecutionData[][]> {
+		const items = this.getInputData();
+		const returnData: IDataObject[] = [];
+
+		await awsConfigCredentials.call(this);
+		const lambda = new Lambda();
+
+		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,
+			};
+
+			try {
+				var responseData = await lambda.invoke(params).promise();
+			} catch (err) {
+				throw new Error(`AWS Error: ${err}`);
+			}
+
+			returnData.push({
+                StatusCode: responseData.StatusCode,
+                Result: responseData.Payload,
+                Error: responseData.FunctionError,
+            } as IDataObject);
+		}
+
+		return [this.helpers.returnJsonArray(returnData)];
+	}
+}