Lamda function for taking manual RDS snapshot with email alerts.

lamda-rds-snapshot-with-sns.js

var AWS = require('aws-sdk');

const awsConf = {
    accessKeyId: process.env.ACCESS_KEY,
    secretAccessKey: process.env.SECRET_KEY,
    region: process.env.REGION
}

const rdsConfig = {
    apiVersion: '2014-10-31',
    ... awsConf
}

const snsConfig = {
    apiVersion: '2010-03-31',
    ... awsConf
}
var rds = new AWS.RDS(rdsConfig);
var sns = new AWS.SNS(snsConfig);

function notifyUser(data, callback){
    const params = {
      Message: data.message, 
      Subject: data.subject,
      TopicArn: process.env.SNS_TOPIC_ARN
    };
    sns.publish(params, callback);
}

exports.handler = (event, context, callback) => {

const currentDate = new Date();

const params = {
    DBInstanceIdentifier: 'my-db', /* required */
    DBSnapshotIdentifier: `my-db-${currentDate.toDateString().replace(/\s+/g, '-').toLowerCase()}-snapshot-manual-by-lamda`, /* DB Snapshot name */
  };

rds.createDBSnapshot(params, function(err, data) {
    if (err) {
        console.log(err, err.stack); // an error occurred
        notifyUser({
            subject: "[AWS] RDS Manual Snapshot Failed",
            message: `
                    DB Instance     : ${params.DBInstanceIdentifier}
                    Region          : ${awsConf.region}
                    Error           : ${err.stack}
            ` 
        }, callback)
    }
    else {
         notifyUser({
            subject: "[AWS] RDS Manual Snapshot Started",
            message: `
                    DB Instance         : ${params.DBInstanceIdentifier}
                    Region              : ${awsConf.region}
                    Latest Snapshot     : ${params.DBSnapshotIdentifier}
            ` 
        }, callback)
    } // successful response
  });
}