---
plugin: reconstructed
instructions:

  # Check whether that host is managed
  - action: set_fact
    name: inv__managed
    value: >-
      {{ inv__data is defined
         and inv__data.network is defined
         and inv__data.service is defined
         and inv__data.instance is defined }}
  - when: not inv__managed
    action: stop

  # Fail when the host name starts with "evil".
  - action: block
    block:
      - when: inventory_hostname.startswith( 'evil' )
        action: fail
        msg: '{{ inventory_hostname }} is obviously evil, skipping.'
    rescue:
      # Do not crash on redeemably evil VMs, but still skip them.
      - when: inv__data.unredeemable is defined
        action: fail
        msg: '{{ reconstructed_error }}'
      - action: create_group
        group: reedmably_evil
        add_host: true
      - action: stop

  # Only create the managed groups if we *have* managed hosts
  - action: block
    run_once: true
    block:
      - action: create_group
        group: managed
      - loop: [ by_environment, by_network, by_failover_stack, by_service ]
        action: create_group
        group: '{{ item }}'
        parent: managed

  # Copy inv__data fields to separate inv__ variables
  - loop:
      - component
      - description
      - fostack
      - instance
      - network
      - service
      - subcomponent
    when: inv__data[item] is defined
    action: set_fact
    name: inv__{{ item }}
    value: '{{ inv__data[ item ] }}'

  # Environment variable and groups
  - action: set_fact
    name: inv__environment
    value: >-
      {{
        inv__data.environment | default(
          ( inv__instance == "prod" ) | ternary( "prod", "dev" )
        )
      }}
  - action: create_group
    group: env_{{ inv__environment }}
    parent: by_environment
    add_host: true

  # Failover stack group
  - action: create_group
    group: >-
      {{
        ( inv__fostack is defined )
        | ternary( "fostack_" ~ inv__fostack | default("") , "no_failover" )
      }}
    parent: by_failover_stack
    add_host: true

  # Network group
  - action: create_group
    group: net_{{ inv__network }}
    parent: by_network
    add_host: true

  # Service group
  - action: set_var
    name: service_group
    value: svc_{{ inv__service }}
  - action: create_group
    group: '{{ service_group }}'
    parent: by_service

  # Component group. We add the host directly if there is no subcomponent.
  - when: inv__component is defined
    action: block
    vars:
      comp_group: svcm_{{ inv__service }}_{{ inv__component }}
    block:
      - action: create_group
        group: '{{ comp_group }}'
        parent: '{{ service_group }}'
      # Subcomponent group, or lack thereof.
      - when: inv__subcomponent is not defined
        action: add_host
        group: '{{ comp_group }}'
      - when: inv__subcomponent is defined
        action: create_group
        group: svcm_{{ inv__service }}_{{ inv__subcomponent }}
        parent: '{{ comp_group }}'
        add_host: true