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[Steve Baker <sbaker@xxxxxxxxxx>]

** Also affects: horizon
   Importance: Undecided
       Status: New

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https://bugs.launchpad.net/bugs/1337172

Title:
  Topology for the stacks created from a nested template, template with
  ResourceGroup resource and provider resource in the template doesn't
  show the actual topology

Status in Orchestration API (Heat):
  Triaged
Status in OpenStack Dashboard (Horizon):
  New

Bug description:
  Create stacks as mentioned below

  1. Nested template
  template 1 has server, volume and volume_attachment resources.
  template 2 just has one resource of type "template 1". That is, template 2 is a nested template.
  create a stack using the template 2

  This kind of template can be found at 
  https://github.com/hardys/demo_templates/tree/master/juno_summit_intro_to_heat/example2_server_with_volume_nested

  2. provider resource in the template
    template 1 has server, volume and volume_attachment resources.
    template 2 defines the provider resource as follows 
    
    resource_registry:
    My::Server::WithVolume: template 1
    
    template 3 has only one resource of type "My::Server::WithVolume" (as defined in resource_registry)
    
    Create a stack using the template 3

  This kind of template can be found at
  https://github.com/hardys/demo_templates/tree/master/juno_summit_intro_to_heat/example4_provider_environment

  3. ResourceGroup resource in the template
    template 1 has server, volume and volume_attachment resources.
    template 2 has resource group resource of type: OS::Heat::ResourceGroup and points to the template 1 and define count > 1
    
    Create a stack using template 2
    
      This kind of template can be found at
  https://github.com/hardys/demo_templates/tree/master/juno_summit_intro_to_heat/example3_server_with_volume_group

  After the stacks are created, navigate to view the topology of the stacks.
  In the topology of the each stack, we can see only one resource that is defined in the template that is used to create the stack. 

  This is correct literally but doesn't make any sense.

  Find the screen shot of the topologies attached to this bug.

  
  For a nested template, shouldn't the resources from the template that is being referred also needs to be displayed in the topology?

  Same case for provider resource in the template and ResourceGroup
  resource in the template

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