sample-event-source.yaml

MyFunction:
  Type: AWS::Serverless::Function
  Properties:
    Runtime: python3.8
    CodeUri: ./src/my_function
    Handler: index.lambda_handler
    Events:
      TableChanges:
        Type: EventBridgeRule
        Properties:
          EventBusName: !Ref EventBus
          InputPath: $.detail
          Pattern:
            source:
              - my-service.database
            resources:
              - !GetAtt MyTable.Arn
            detail-type:
              - INSERT
              - MODIFY
            detail:
              dynamodb:
                Keys:
                  pk:
                    S: [{ "prefix": "OID#" }]
                  sk:
                    S: [{ "prefix": "UID#" }]