AWS SAM for SES event pipeline

template.yaml

EventsSNS:
  Type: AWS::SNS::Topic
  Properties:
    TopicName: sam-pigeon-events
    Subscription:
      - Endpoint: !GetAtt EventsQueue.Arn
        Protocol: sqs

EventsQueue:
  Type: AWS::SQS::Queue
  Properties:
    QueueName: sam-pigeon-events

EventsQueuePolicy:
  Type: AWS::SQS::QueuePolicy
  Properties:
    Queues:
      - !Ref EventsQueue
    PolicyDocument:
      Version: '2012-10-17'
      Statement:
        - Effect: Allow
          Action:
            - sqs:SendMessage
          Resource: !GetAtt EventsQueue.Arn
          Principal: '*'
          Condition:
            ArnEquals:
              aws:SourceArn: !Ref EventsSNS

IngestEventLambda:
  Type: AWS::Serverless::Function
  Properties:
    CodeUri: src/ingest-event/
    Description: Polls SQS, forwards event
    Policies:
      - SQSPollerPolicy:
          QueueName: !GetAtt EventsQueue.QueueName
    Events:
      SQSEvent:
        Type: SQS
        Properties:
          BatchSize: 10
          Queue: !GetAtt EventsQueue.Arn
    Environment:
      Variables:
        STAGE: !Ref Stage