Lambda Event Parser

A simple parse tool to just parses the events triggering your AWS Lambda into a common format, so you don't have to worry.

The standardized event format

{sourceType: 'api',sourceEvent: originalEvent,records: [{userId: 123}]// array of events (with parameters as properties)}

How does it work

API Gateway GET Request Event:

?userId=456&name=someoneUnknown

{httpMethod: 'GET',queryStringParameters: {userId: 456,name: 'someoneUnknown'}}}

will be translated into ->

{sourceType: 'api',sourceEvent: originalEvent,// the complete, unchanged GET request event objetrecords: [{userId: 123,name: 'someoneUnknown'}]// array of events (with parameters as properties)}

Let's take another example, an S3 Event:

S3 Event:

{Records: [{s3: {object: {key: "HappyFace.jpg",size: 1024}}}]}

will be translated into:

{sourceType: 's3',sourceEvent: originalEvent,// the complete, unchanged S3 event objetrecords: [{key: "HappyFace.jpg",size: 1024}]// array of events (with parameters as properties)}

SNS Event:

{"Records": [{"eventID": "7de3041dd709b024af6f29e4fa13d34c","eventName": "INSERT","eventVersion": "1.1","eventSource": "aws:dynamodb","awsRegion": "us-west-2","dynamodb": {"ApproximateCreationDateTime": 1479499740,"Keys": {"Timestamp": {"S": "2016-11-18:12:09:36"},"Username": {"S": "John Doe"}},"NewImage": {"Timestamp": {"S": "2016-11-18:12:09:36"},"Message": {"S": "This is a bark from the Woofer social network"},"Username": {"S": "John Doe"}},"SequenceNumber": "13021600000000001596893679","SizeBytes": 112,"StreamViewType": "NEW_IMAGE"},"eventSourceARN": "arn:aws:dynamodb:us-east-1:123456789012:table/BarkTable/stream/2016-11-16T20:42:48.104"}]}

will be translated into:

{sourceType: 's3',sourceEvent: originalEvent,// the complete, unchanged S3 event objetrecords: [{key: "HappyFace.jpg",size: 1024}]// array of events (with parameters as properties)}

Supported AWS Events (so far)

• SNS
• S3
• API Gateway (GET, POST, PUT, DELETE, PATCH)
• DynamoDB Streams (NEW_IMAGE)
• SQS
• Other AWS Lambda
• CloudWatch
• Kinesis DataFirehose
• Kinesis Data Streams
• SES

License

MIT

Aleksandar Simovic