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DynamoDB Quickstart

Event handler for Amazon DynamoDB Stream Events.

Features

  • Automatically convert DynamoDB JSON dict to standard JSON dict
  • Only run on certain DynamoDB operations; i.e. when items are created, updated or deleted
  • Able to validate DynamoDB record against a JSON Schema
  • Assign Data Classes to records instead of getting DynamoDB JSON dicts

Installation

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$ pip install acai_aws
# pipenv install acai_aws
# poetry add acai_aws

Minimal Setup

After installation, create a handler file and configure the AWS lambda to use that file as its handler.

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from acai_aws.dynamodb.requirements import requirements

@requirements(
    operations=['created', 'deleted']
)
def handle(event):
    for record in event.records:
        print(record)

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functions:
    ddb-handler:
        handler: service/handlers/dynamodb.handle
        memorySize: 512
        timeout: 30
        events:
            - stream:
                type: dynamodb
                arn:
                  Fn::GetAtt: [ SomeDDBTable, StreamArn ]