AWS Lambda
Developer Guide

Using AWS Lambda with Amazon Kinesis Data Firehose

Amazon Kinesis Data Firehose captures, transforms, and loads streaming data into downstream services such as Kinesis Data Analytics or Amazon S3. You can write Lambda functions to request additional, customized processing of the data before it is sent downstream.

Example Amazon Kinesis Data Firehose Message Event

{ "invocationId": "invoked123", "deliveryStreamArn": "aws:lambda:events", "region": "us-west-2", "records": [ { "data": "SGVsbG8gV29ybGQ=", "recordId": "record1", "approximateArrivalTimestamp": 1510772160000, "kinesisRecordMetadata": { "shardId": "shardId-000000000000", "partitionKey": "4d1ad2b9-24f8-4b9d-a088-76e9947c317a", "approximateArrivalTimestamp": "2012-04-23T18:25:43.511Z", "sequenceNumber": "49546986683135544286507457936321625675700192471156785154", "subsequenceNumber": "" } }, { "data": "SGVsbG8gV29ybGQ=", "recordId": "record2", "approximateArrivalTimestamp": 151077216000, "kinesisRecordMetadata": { "shardId": "shardId-000000000001", "partitionKey": "4d1ad2b9-24f8-4b9d-a088-76e9947c318a", "approximateArrivalTimestamp": "2012-04-23T19:25:43.511Z", "sequenceNumber": "49546986683135544286507457936321625675700192471156785155", "subsequenceNumber": "" } } ] }

For more information, see Amazon Kinesis Data Firehose Data Transformation in the Kinesis Data Firehose Developer Guide.