Translation of subnets seems to be not working

I try to add a subnet to virtual network configuration. But I realise that generated ARM template doesn’t contain the subnet. My configuration looks as follows:

let bastionSubnet = subnet {
  name "AzureBastionSubnet"
  prefix "10.1.0.0/27"
}

let virtualNetwork env = vnet {
  name (sprintf "vnet-%s" env)
  add_address_spaces [ "10.0.0.0/16" ]
  add_subnets [ bastionSubnet ]
}

let machine env = vm {
  name (sprintf "machine-%s" env)
  vm_size Vm.Standard_B1s
  operating_system Vm.UbuntuServer_1804LTS
  os_disk 128 Vm.StandardSSD_LRS
  username "heheheheheheh"
  subnet_prefix "10.0.0.0/24"
  depends_on (virtualNetwork env)
}

While generated ARM template looks like this:

    {
      "apiVersion": "2018-11-01",
      "location": "centralus",
      "name": "vnet-test",
      "properties": {
        "addressSpace": {
          "addressPrefixes": [
            "10.0.0.0/16"
          ]
        },
        "subnets": [
          {
            "name": "machine-test-subnet",
            "properties": {
              "addressPrefix": "10.0.0.0/24",
              "delegations": []
            }
          }
        ]
      },
      "tags": {},
      "type": "Microsoft.Network/virtualNetworks"
    }

As you may see the only subnet added to the VirtualNetwork is a machine subnet. When I remove creation of a machine from the script, the template looks as follows:

{
      "apiVersion": "2018-11-01",
      "location": "centralus",
      "name": "vnet-test",
      "properties": {
        "addressSpace": {
          "addressPrefixes": [
            "10.0.0.0/16"
          ]
        },
        "subnets": [
          {
            "name": "AzureBastionSubnet",
            "properties": {
              "addressPrefix": "10.1.0.0/27",
              "delegations": []
            }
          }
        ]
      },
      "tags": {},
      "type": "Microsoft.Network/virtualNetworks"
    }

I think that the problem is here where the Subnets would be overriden(?)

I would appreciate any hint regarding that I’m doing something wrong or where I could take a look to fix the issue and provide a PR : )

[ninjarobot]

You’ll need to use link_to_vnet and subnet_name to specify the vnet and subnet to use, otherwise the implicitly generated vnet will overwrite things.

One other item is that the AzureBastionSubnet is not contained within the vnet address space you defined. To make sure the pieces fit, I suggest using the builder to carve out subnets within the address space:

let privateNet = vnet {
    name "vnet-test"
    build_address_spaces [
        address_space {
            space "10.0.0.0/16"
            subnets [
                build_subnet "vms" 24
                build_subnet "AzureBastionSubnet" 27
            ]
       }
    ]
}

let machine = vm {
  name "machine-1234"
  vm_size Vm.Standard_B1s
  operating_system Vm.UbuntuServer_1804LTS
  os_disk 128 Vm.StandardSSD_LRS
  username "heheheheheheh"
  subnet_name "vms"
  link_to_vnet privateNet.Name
}

let template = arm {
  add_resource privateNet
  add_resource machine
}

[MNie]

@ninjarobot , @isaacabraham thanks to that everything seems to be working as expected. Thank you!