AWSTemplateFormatVersion: 2010-09-09
Transform: AWS::Serverless-2016-10-31
Description: aws-lambda-sns-sqs-lambda

Globals:
  Function:
    Runtime: java11
    MemorySize: 512
    Timeout: 25

Resources:
  OrderProducer:
    Type: AWS::Serverless::Function
    Properties:
      FunctionName: OrderProducer
      Handler: com.example.producer.OrderProducer::handleRequest
      CodeUri: target/sourceCode.zip
      Policies:
        - Statement:
            - Effect: Allow
              Action:
                - sns:ListTopics
              Resource: arn:aws:sns:*:*:*
            - Effect: Allow
              Action:
                - sns:Publish
              Resource: "*"

  OrderConsumer:
    Type: AWS::Serverless::Function
    Properties:
      FunctionName: OrderConsumer
      Handler: com.example.consumer.OrderConsumer::handleRequest
      CodeUri: target/sourceCode.zip
      Events:
        MySQSEvent:
          Type: SQS
          Properties:
            Queue: !GetAtt OrdersSqsQueue.Arn
      Policies:
        - CloudWatchPutMetricPolicy: { }

  OrderSNSTopic:
    Type: AWS::SNS::Topic
    Properties:
      TopicName: Orders
      Subscription:
        - Protocol: sqs
          Endpoint: !GetAtt OrdersSqsQueue.Arn

  OrdersSqsQueue:
    Type: AWS::SQS::Queue
    Properties:
      QueueName: Orders

  SnsToSqsPolicy:
    Type: AWS::SQS::QueuePolicy
    Properties:
      PolicyDocument:
        Version: "2012-10-17"
        Statement:
          - Sid: "Allow SNS publish to SQS"
            Effect: Allow
            Principal:
              Service: "sns.amazonaws.com"
            Resource: !GetAtt OrdersSqsQueue.Arn
            Action: SQS:SendMessage
            Condition:
              ArnEquals:
                aws:SourceArn: !Ref OrderSNSTopic
      Queues:
        - Ref: OrdersSqsQueue