DemoCluster.scala

 private val vpc = Vpc("demo-vpc", "172.101.0.0/16")

  private val subnet = Subnet("demo-subnet", "172.101.0.0/24", vpc)

  private val sshPermission = new IpPermission()
    .withIpv4Ranges(new IpRange().withCidrIp("0.0.0.0/32"))
    .withIpProtocol("tcp")
    .withFromPort(22)
    .withToPort(22)

  private val key = Key("demo-key")

  private val securityGroup =
    SecurityGroup("demo-instance-sg",
                  "demo-instance-sg",
                  vpc,
                  Seq(sshPermission))

  private val debianStretchImageId = "ami-0bd9223868b4778d7"

  private val demoHost =
    EC2LinuxInstance("demo-instance",
                     InstanceType.T3Micro,
                     Regions.US_EAST_1,
                     debianStretchImageId,
                     securityGroup,
                     subnet,
                     key)

  private val h2Cluster = H2Cluster(H2ServerHost("demo-h2-1", demoHost))

  private val cassandraCluster = CassandraCluster(
    CassandraHost("demo-cassandra-1", demoHost))

  private val receiver =
    Receiver(ReceiverHost("demo-receiver-1", demoHost),
             h2Cluster,
             cassandraCluster)

  private val webApp =
    WebApp(WebAppHost("demo-webapp-1", demoHost), h2Cluster, cassandraCluster)

  private val cluster = ObservatoryCluster("demo", receiver, webApp)

  deploy(cluster)