serverless.yml

service: sls-cake-ordering-system

frameworkVersion: '2'

configValidationMode: error

plugins:
  - serverless-pseudo-parameters

provider:
  name: aws
  runtime: nodejs12.x
  lambdaHashingVersion: 20201221

  iam:
    role:
      statements:
        - Effect: 'Allow'
          Action:
            - dynamodb:PutItem
            - dynamodb:UpdateItem
            - dynamodb:GetItem
          Resource: arn:aws:dynamodb:#{AWS::Region}:#{AWS::AccountId}:table/ordersTable
        - Effect: 'Allow'
          Action:
            - kinesis:PutRecord
          Resource: arn:aws:kinesis:#{AWS::Region}:#{AWS::AccountId}:stream/order-events
        - Effect: 'Allow'
          Action:
            - ses:SendEmail
          Resource: "*"
          Condition:
            StringEquals:
              ses:FromAddress:
                - slscakeordersystem@grr.la
        - Effect: 'Allow'
          Action:
            - sqs:SendMessage
          Resource: 
            - arn:aws:sqs:#{AWS::Region}:#{AWS::AccountId}:deliveryServiceQueue
            - arn:aws:sqs:#{AWS::Region}:#{AWS::AccountId}:customerServiceQueue

functions:
  createOrder:
    handler: handler.createOrder
    events:
      - http:
          path: /order
          method: post
    environment:
      orderTableName: ordersTable
      orderStreamName: order-events
  fulfillOrder:
    handler: handler.fulfillOrder
    events:
      - http:
          path: /order/fulfill
          method: post
    environment:
      orderTableName: ordersTable
      orderStreamName: order-events
  sendOrderNotifications:
    handler: handler.sendOrderNotifications
    events:
      - stream:
          arn: arn:aws:kinesis:#{AWS::Region}:#{AWS::AccountId}:stream/order-events
    environment:
      region: 
        Ref: AWS::Region
      cakeProducerMail: slscakeproducer@grr.la
      orderSystemMail: slscakeordersystem@grr.la
      deliveryServiceQueue: 
        Ref: deliveryServiceQueue
      orderTableName: ordersTable
  deliveryCompanyNotifications:
    handler: handler.deliveryCompanyNotifications
    events:
      - sqs:
          arn: 
            Fn::GetAtt:
              - deliveryServiceQueue
              - Arn
          batchSize: 1
  completeOrder:
    handler: handler.completeOrder
    events:
      - http:
          path: /order/delivered
          method: post
    environment:
      region: 
        Ref: AWS::Region
      orderTableName: ordersTable
      customerServiceQueue: 
        Ref: customerServiceQueue
  customerReviewNotifications:
    handler: handler.customerReviewNotifications
    events:
      - sqs:
          arn: 
            Fn::GetAtt:
              - customerServiceQueue
              - Arn
          batchSize: 1

resources:
  Resources:
    orderEventsStream:
      Type: AWS::Kinesis::Stream
      Properties:
        Name: order-events
        ShardCount: 1 
    orderTable:
      Type: AWS::DynamoDB::Table
      Properties:
        TableName: ordersTable
        AttributeDefinitions:
          - AttributeName: "orderId"
            AttributeType: "S"
        KeySchema:
          - AttributeName: "orderId"
            KeyType: "HASH"
        BillingMode: PAY_PER_REQUEST
    deliveryServiceQueue:
      Type: AWS::SQS::Queue
      Properties:
        QueueName: deliveryServiceQueue
    customerServiceQueue:
      Type: AWS::SQS::Queue
      Properties:
        QueueName: customerServiceQueue