AWS Lambda
Developer Guide

Using AWS Lambda with Amazon RDS

You can use AWS Lambda to process event notifications from an Amazon Relational Database Service (Amazon RDS) database. Amazon RDS sends notifications to an Amazon Simple Notification Service (Amazon SNS) topic, which you can configure to invoke a Lambda function. Amazon SNS wraps the message from Amazon RDS in its own event document and sends it to your function.

Example Amazon RDS Message in an Amazon SNS Event

{ "Records": [ { "EventVersion": "1.0", "EventSubscriptionArn": "arn:aws:sns:us-east-2:123456789012:rds-lambda:21be56ed-a058-49f5-8c98-aedd2564c486", "EventSource": "aws:sns", "Sns": { "SignatureVersion": "1", "Timestamp": "2019-01-02T12:45:07.000Z", "Signature": "tcc6faL2yUC6dgZdmrwh1Y4cGa/ebXEkAi6RibDsvpi+tE/1+82j...65r==", "SigningCertUrl": "https://sns.us-east-2.amazonaws.com/SimpleNotificationService-ac565b8b1a6c5d002d285f9598aa1d9b.pem", "MessageId": "95df01b4-ee98-5cb9-9903-4c221d41eb5e", "Message": "{\"Event Source\":\"db-instance\",\"Event Time\":\"2019-01-02 12:45:06.000\",\"Identifier Link\":\"https://console.aws.amazon.com/rds/home?region=eu-west-1#dbinstance:id=dbinstanceid\",\"Source ID\":\"dbinstanceid\",\"Event ID\":\"http://docs.amazonwebservices.com/AmazonRDS/latest/UserGuide/USER_Events.html#RDS-EVENT-0002\",\"Event Message\":\"Finished DB Instance backup\"}", "MessageAttributes": {}, "Type": "Notification", "UnsubscribeUrl": "https://sns.us-east-2.amazonaws.com/?Action=Unsubscribe&SubscriptionArn=arn:aws:sns:us-east-2:123456789012:test-lambda:21be56ed-a058-49f5-8c98-aedd2564c486", "TopicArn":"arn:aws:sns:us-east-2:123456789012:sns-lambda", "Subject": "RDS Notification Message" } } ] }

For instructions on configuring an Amazon RDS database to send notifications, see Using Amazon RDS Event Notification in the Amazon Relational Database Service User Guide.

For details on using Amazon SNS as trigger, see Using AWS Lambda with Amazon SNS.