serverless.yml

service: 'lightsail-containers-autoscaling'
frameworkVersion: '3'

custom:
  tableName: 'ls-containers-autoscaling-${env:NODE_ENV, "development"}'

provider:
  name: aws
  runtime: nodejs16.x
  region: ${env:AWS_DEFAULT_REGION, 'ap-southeast-1'}
  iam:
    role:
      statements:
        - Effect: Allow
          Action:
            - dynamodb:Query
            - dynamodb:Scan
            - dynamodb:GetItem
            - dynamodb:PutItem
            - dynamodb:UpdateItem
            - dynamodb:DeleteItem
          Resource: 'arn:aws:dynamodb:${self:provider.region}:${aws:accountId}:table/${self:custom.tableName}'
        - Effect: Allow
          Action:
            - lightsail:GetContainerServices
            - lightsail:GetContainerServiceMetricData
            - lightsail:UpdateContainerService
          Resource: 'arn:aws:lightsail:${self:provider.region}:${aws:accountId}:*'

functions:
  autoscaling:
    handler: src/index.handler
    events:
      - schedule:
          rate: rate(10 minutes)
          enabled: true
          input: 
            name: lightsail-containers-autoscaler
            rules:
            - enabled: true
              dry_run: false
              scaling_type: dynamic
              nodes: 3
              power: nano
              metric: cpu
              average: 20
              average_operator: gte
              average_duration_minutes: 10
              wait_after_last_deployment_minutes: 10
            - enabled: true
              dry_run: false
              scaling_type: dynamic
              nodes: 1
              power: nano
              metric: cpu
              average: 5
              average_operator: lte
              average_duration_minutes: 15
              wait_after_last_deployment_minutes: 30
            - enabled: true
              dry_run: false
              scaling_type: scheduled
              nodes: 2
              power: micro
              run_at: "* * 21 * * *"
              wait_after_last_deployment_minutes: 30

    environment:
      APP_TABLE_NAME: ${self:custom.tableName}
      APP_REGION: ${env:AWS_DEFAULT_REGION, 'ap-southeast-1'}
      APP_CONTAINER_SVC_NAME: ${env:APP_CONTAINER_SVC_NAME}
          
resources:
  Resources:
    BotDemoTable:
      Type: AWS::DynamoDB::Table
      Properties:
        AttributeDefinitions:
          - AttributeName: pk
            AttributeType: S
          - AttributeName: sk
            AttributeType: S
        KeySchema:
          - AttributeName: pk
            KeyType: HASH
          - AttributeName: sk
            KeyType: RANGE
        BillingMode: PAY_PER_REQUEST
        TableName: ${self:custom.tableName}
        TimeToLiveSpecification:
          AttributeName: ttl
          Enabled: true