template.yml

AWSTemplateFormatVersion: 2010-09-09
Transform:
- AWS::Serverless-2016-10-31

Resources:
#region CreateOrder function
  CreateOrderFunction:
    Type: AWS::Serverless::Function
    Properties:
      FunctionName: CreateOrder
      Handler: orders/src/create-order-lambda.handler
      Runtime: nodejs12.x
      Environment:
        Variables:
          QUEUE_URL: !Ref OrdersQueue
      Role:
        Fn::GetAtt:
        - CreateOrderFunctionRole
        - Arn

  CreateOrderFunctionRole:
    Type: AWS::IAM::Role
    Properties:
      RoleName: CreateOrderFunctionRole
      AssumeRolePolicyDocument:
        Statement:
        - Effect: Allow
          Principal:
            Service: [lambda.amazonaws.com]
          Action: sts:AssumeRole
      Path: /
      ManagedPolicyArns:
        - !Sub 'arn:${AWS::Partition}:iam::aws:policy/service-role/AWSLambdaBasicExecutionRole'
      Policies:
      - PolicyName: CreateOrder
        PolicyDocument:
          Version: '2012-10-17'
          Statement:
            - Effect: Allow
              Action:
                - 'sqs:SendMessage'
              Resource: 
                - Fn::GetAtt: 
                  - "OrdersQueue"
                  - "Arn"
#endregion

#region AddOrder function
  AddOrderFunction:
    Type: AWS::Serverless::Function
    Properties:
      FunctionName: AddOrder
      Handler: list-of-orders/src/add-order-lambda.handler
      Runtime: nodejs12.x
      Role:
        Fn::GetAtt:
        - AddOrderFunctionRole
        - Arn
      Events:
        Mapping:
          Type: SQS
          Properties:
            BatchSize: 1
            Queue: 
              Fn::GetAtt: 
              - "OrdersQueue"
              - "Arn"

  AddOrderFunctionRole:
    Type: AWS::IAM::Role
    Properties:
      RoleName: AddOrderFunctionRole
      AssumeRolePolicyDocument:
        Statement:
        - Effect: Allow
          Principal:
            Service: [lambda.amazonaws.com]
          Action: sts:AssumeRole
      Path: /
      ManagedPolicyArns:
        - !Sub 'arn:${AWS::Partition}:iam::aws:policy/service-role/AWSLambdaBasicExecutionRole'
      Policies:
      - PolicyName: AddOrder
        PolicyDocument:
          Version: '2012-10-17'
          Statement:
            - Effect: Allow
              Action:
                - 'sqs:ReceiveMessage'
                - 'sqs:DeleteMessage'
                - 'sqs:GetQueueAttributes'
              Resource: 
                - Fn::GetAtt: 
                  - "OrdersQueue"
                  - "Arn"
#endregion

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