template.yml

AWSTemplateFormatVersion: '2010-09-09'
Transform: AWS::Serverless-2016-10-31
Parameters:
  TargetEmail:
    Type: String
Resources:
  SourceBucket:
    Type: AWS::S3::Bucket
    DeletionPolicy: Retain    
    Properties:
      BucketName: !Sub "demo-ci-cd-source-bucket"
  TargetTopic:
    Type: AWS::SNS::Topic
    Properties:
      TopicName: demo-ci-cd-target-topic
      Subscription:
        - Endpoint: !Sub "${TargetEmail}"
          Protocol: email
  S3ToSNSFunction:
    Type: AWS::Serverless::Function
    Properties:
      FunctionName: demo-ci-cd-lambda-function
      Handler: demo.S3ToSnsHandler::handleRequest
      Runtime: java11
      CodeUri: build/distributions/demo-ci-cd-lambda-function.zip
      Environment:
        Variables:
          Region: !Sub "${AWS::Region}"
          TopicARN: !Sub "arn:aws:sns:${AWS::Region}:${AWS::AccountId}:demo-ci-cd-target-topic"
      AutoPublishAlias: live
      DeploymentPreference:
        Type: AllAtOnce
      Timeout: 60
      MemorySize: 512
      Policies:
        - LambdaInvokePolicy:
            FunctionName: demo-ci-cd-lambda-function
        - S3ReadPolicy:
            BucketName: !Sub "demo-ci-cd-source-bucket"
        - SNSPublishMessagePolicy:
            TopicName: demo-ci-cd-target-topic
      Events:
        S3ObjectCreated:
          Type: S3
          Properties:
            Bucket: !Ref SourceBucket
            Events: s3:ObjectCreated:*
        S3ObjectRemoved:
          Type: S3
          Properties:
            Bucket: !Ref SourceBucket
            Events: s3:ObjectRemoved:*