---
- name: Ensure general system requirements are installed
  yum:
    name: "{{ system_requirements }}"
  become: true
  # Don't uninstall requirements during teardown since they may already have
  # been present.
  when: cmd != 'teardown'

- name: Ensure log directory exists
  file:
    path: "{{ log_directory }}"
    state: directory
  become: true
  # Don't remove log directory during teardown to preserve historical logs.
  when: cmd != 'teardown'

- name: Check if ovs-vsctl command is present
  command: ovs-vsctl --version
  register: ovs_vsctl_check
  failed_when: false
  changed_when: false

- block:
    - name: Ensure Open vSwitch package is installed
      yum:
        name: openvswitch
      become: true

    - name: Ensure Open vSwitch is started and enabled
      service:
        name: openvswitch
        state: running
        enabled: true
      become: true
  # Assume a non-zero return code means the command does not exist. Do this
  # check to avoid installing Open vSwitch system-wide if the command already
  # exists as a link to a containerised version of OVS.
  when: ovs_vsctl_check.rc != 0

- name: Configure physical networks
  include_tasks: physical_network.yml
  vars:
    network_name: "{{ pn.key }}"
    tenks_bridge: "{{ bridge_prefix ~ (pn.key | physnet_name_to_index) }}"
    source_interface: "{{ pn.value }}"
    state: "{{ 'absent' if cmd == 'teardown' else 'present' }}"
  loop: "{{ query('dict', physnet_mappings) }}"
  loop_control:
    loop_var: pn