Cacher is the code snippet organizer for pro developers

var AWS = require("aws-sdk");
 
exports.handler = function(event, context) {
    var sns = new AWS.SNS();
    var ec2 = new AWS.EC2();
    var message = "The following Elastic IPs are not associated:\n\n";
    var params = {};
    ec2.describeAddresses(params, function(err, data) {
        if (err) {
            console.log(err, err.stack); 
        }
        else {
            var unassociatedAddresses = 0;
            for (var i = 0; i < data.Addresses.length; i++){
                if (!data.Addresses[i].hasOwnProperty("InstanceId")){
                    console.log(data.Addresses[i].PublicIp);
                    unassociatedAddresses++;
                    message += " " + data.Addresses[i].PublicIp + "\n";
                }
            }
            if (unassociatedAddresses > 0){
                var publishParams = {
                    Message: message, 
                    Subject: "Elastic IP Addresses Unassociated",
                    TopicArn: "Your Topic ARN"
                };
                sns.publish(publishParams, context.done);
            }
        }
    });
};

{
    "Version": "2012-10-17",
    "Statement": [
        {
            "Effect": "Allow",
            "Action": [
                "sns:Publish",
                "sns:Subscribe"
            ],
            "Resource": [
                "Your Topic ARN"
            ]
        },
        {
            "Effect": "Allow",
            "Action": [
                "ec2:DescribeAddresses"
            ],
            "Resource": [
                "*"
            ]
        }
    ]
}