install_lambda.txt

{
    "Description": "CloudFormation template to deploy lambda function",
    "Parameters": {
        "s3Bucket": {
            "Default": "datameetgeo",  
            "Description": "s3 bucket name of the lambda",
            "Type": "String"
        },
        "s3Key": {
            "Default": "lambda_function.zip",
            "Description": "s3 bucket key of the lambda",
            "Type": "String"
        }
    },
    "Resources": {
        "TerminateEMRLambdaFunction": {
            "Properties": {
                "Code": {
                    "S3Bucket": {
                        "Ref": "s3Bucket"
                    },
                    "S3Key": {
                        "Ref": "s3Key"
                    }
                },
                "FunctionName": "dailyCost",
                "Handler": "lambda_function.lambda_handler",
                "MemorySize": 128,
                "Role": {
                    "Fn::GetAtt": [
                        "GetCost",
                        "Arn"
                    ]
                },
                "Runtime": "python2.7",
                "Timeout": "60"
            },
            "Type": "AWS::Lambda::Function"
        },
        "GetCost": {
            "Properties": {
                "AssumeRolePolicyDocument": {
                    "Statement": [
                        {
                            "Action": [
                                "sts:AssumeRole"
                            ],
                            "Effect": "Allow",
                            "Principal": {
                                "Service": "lambda.amazonaws.com"
                            }
                        }
                    ]
                },
                "Policies": [
                    {
                        "PolicyDocument": {
                            "Statement": [
                                {
                                    "Action": "*",
                                    "Effect": "Allow",
                                    "Resource": "*",
                                    "Sid":"GenericAccess"
                                }
                            ],
                            "Version": "2012-10-17"
                        },
                        "PolicyName": "DailyCostPolicy"
                    }
                ],
                "RoleName": "DailyCostRole"
            },
            "Type": "AWS::IAM::Role"
        },
        "TerminateEMRSNSTopic": {
            "Properties": {
                "DisplayName": "Kill Idle EMR",
                "Subscription": [
                    {
                        "Endpoint": {
                            "Fn::GetAtt": [
                                "TerminateEMRLambdaFunction",
                                "Arn"
                            ]
                        },
                        "Protocol": "lambda"
                    }
                ],
                "TopicName": "TerminateEMRSNSTopic"
            },
            "Type": "AWS::SNS::Topic"
        },
        "LambdaInvokePermission":{
            "Properties": {
                "Action": "lambda:InvokeFunction",
                "Principal": "sns.amazonaws.com",
                "SourceArn": { "Ref": "TerminateEMRSNSTopic" },
                "FunctionName": {
                    "Fn::GetAtt": [ "TerminateEMRLambdaFunction", "Arn" ]
                }
            },
            "Type": "AWS::Lambda::Permission"
        }
    }
}