---
version: 2.0

clone_vm:
  type: direct
  description: Create a virtual machine by cloning an existing one.                                                                                                                   1.clone system volume                                                                                                                                                         2.set the system volume to bootable                                                                                                                                           3.create a new instance from the new bootable system volume                                                                                                                   4.clone user volumes                                                                                                                                                          5.attach user volumes to the new instance

  input:
    - vm_name       #name of the new instance
    - flavor_ref    #flavor of the new instance
    - source_root_vol_id    #root volume id of the source instance
    - root_vol_name  #root volume name of the new instance
    - root_vol_size  #root volume size of the new instance
    - additional_volumes:
        - vol_name #volume name of the new instance
        - vol_size #volume size of the new instance
        - source_vol_id   #source volume id of the source instance

  tasks:
    clone_root_volume:
      description: Create a new volume from root volume of source vm.
      workflow: clone_volume
      input:
        size: <% $.root_vol_size %>
        source_volid: <% $.source_root_vol_id %>
        name: <% $.root_vol_name %>
      publish:
        new_root_vol_id: <% task(clone_root_volume).result.vol_id %>
      on-success:
        - set_volume_bootable

    set_volume_bootable:
      action: cinder.volumes_set_bootable volume=<% $.new_root_vol_id %> flag=true
      on-success:
        - create_new_vm

    create_new_vm:
      description: Boot a new instance from new bootable volume
      workflow: boot_vm_from_volume
      input:
        image: ""
        vm_name: <% $.vm_name %>
        flavor_ref: <% $.flavor_ref %>
        block_device_mapping_v2:
          - source_type: "volume"
            destination_type: "volume"
            delete_on_termination: "FALSE"
            boot_index: "0"
            uuid: <% $.new_root_vol_id %>
      publish:
        new_vm_id: <% task(create_new_vm).result.vm_id %>
      on-success:
        - clone_additional_volumes

    clone_additional_volumes:
      description: Create new volumes from existed ones one by one
      with-items: volume in <% $.additional_volumes %>
      workflow: clone_volume
      input:
        source_volid: <% ($.volume).source_vol_id %>
        size: <% ($.volume).vol_size %>
        name: <% ($.volume).vol_name %>
      publish:
        additional_vol_ids: <% task(clone_additional_volumes).result.vol_id %>
      on-success:
        - attach_volume

    attach_volume:
      description: Attach additional volumes to the instance
      with-items: vol_id in <% $.additional_vol_ids %>
      action: nova.volumes_create_server_volume
      input:
        server_id: <% $.new_vm_id %>
        volume_id: <% $.vol_id %>
        device: null