Namespaces:
  =: io.murano.resources
  sys: io.murano.system


Name: Instance


Properties:
  name:
    Contract: $.string().notNull()
  flavor:
    Contract: $.string().notNull()
  image:
    Contract: $.string().notNull()

  agent:
    Contract: $.class(sys:Agent)
    Type: Runtime


Workflow:
  initialize:
    Body:
      - $.environment: $.find(Environment).require()
      - $.agent: new(sys:Agent, host => $)
      - $.resources: new(sys:Resources)

  deploy:
    Body:
      - $userData: $.prepareUserData()
      - $template:
          Resources:
            $.name:
              Type: 'AWS::EC2::Instance'
              Properties:
                InstanceType: $.flavor
                ImageId: $.image
                UserData: $userData
      - $.environment.stack.updateTemplate($template)
      - $.environment.stack.push()
      - $.environment.instanceNotifier.trackApplication($this)

  destroy:
    Body:
      - $template: $.environment.stack.current()
      - $patchBlock:
          op: remove,
          path: format('/Resources/{0}', $.name)
      - $template: patch($template, $patchBlock)
      - $.environment.stack.setTemplate($template)
      - $.environment.stack.push()
      - $.environment.instanceNotifier.untrackApplication($this)

  prepareUserData:
    Body:
      - If: !yaql "'w' in toLower($.image)"
        Then:
          - $configFile: $.resources.string('Agent-v1.template')
          - $initScript: $.resources.string('windows-init.ps1')
        Else:
          - $configFile: $.resources.string('Agent-v2.template')
          - $initScript: $.resources.string('linux-init.sh')

      - $configReplacements:
          "%RABBITMQ_HOST%": config(rabbitmq, host)
          "%RABBITMQ_PORT%": config(rabbitmq, port)
          "%RABBITMQ_USER%": config(rabbitmq, login)
          "%RABBITMQ_PASSWORD%": config(rabbitmq, password)
          "%RABBITMQ_VHOST%": config(rabbitmq, virtual_host)
          "%RABBITMQ_SSL%": str(config(rabbitmq, ssl)).toLower()
          "%RABBITMQ_INPUT_QUEUE%": $.agent.queueName()
          "%RESULT_QUEUE%": $.environment.agentListener.queueName()

      - $scriptReplacements:
          "%AGENT_CONFIG_BASE64%": base64encode($configFile.replace($configReplacements))
          "%INTERNAL_HOSTNAME%": $.name
          "%MURANO_SERVER_ADDRESS%": coalesce(config(file_server), config(rabbitmq, host))
          "%CA_ROOT_CERT_BASE64%": ""

      - Return: $initScript.replace($scriptReplacements)