cloudformation.template

{
  "AWSTemplateFormatVersion" : "2010-09-09",
  "Description" : "AWS CloudFormation sample template that contains a single Lambda function that will be updated by the build scripts",

  "Resources" : {

    "GreetingLambda": {
      "Type" : "AWS::Lambda::Function",
      "Properties": {
        "Code": {
          "ZipFile": { "Fn::Join": ["\n", [
            "'use strict';",
            "",
            "// Initial Echo Lambda",
            "exports.handler = (event, context) => {",
            "  console.log('Event:', JSON.stringify(event));",
            "  context.succeed(event);",
            "};"
          ]]}
        },
        "Description": "A greeting function",
        "FunctionName": "GreetingLambda",
        "Handler": "index.handler",
        "Role": { "Fn::GetAtt": ["LambdaExecutionRole", "Arn"]},
        "Runtime": "nodejs4.3"
      }
    },

    "LambdaExecutionRole": {
      "Type": "AWS::IAM::Role",
      "Properties": {
        "AssumeRolePolicyDocument": {
          "Version": "2012-10-17",
          "Statement": [{
            "Effect": "Allow",
            "Principal": { "Service": ["lambda.amazonaws.com"] },
            "Action": ["sts:AssumeRole"]
          }]
        },
        "ManagedPolicyArns": ["arn:aws:iam::aws:policy/service-role/AWSLambdaBasicExecutionRole"]
      }
    }
  }
}