- name: Register storage backend type
  environment:
    KUBECONFIG: "{{ cifmw_openshift_kubeconfig }}"
    PATH: "{{ cifmw_path | default(ansible_env.PATH) }}"
  ansible.builtin.shell: >-
    set -o pipefail;
    {{ cifmw_update_openstack_cmd }} volume service list -f json |
      jq -r -c '.[] | select(.Binary | contains("cinder-volume")) | .Host'
  register: storage_backend
  changed_when: false

- name: Get the list of OpenStack hypervisors
  environment:
    KUBECONFIG: "{{ cifmw_openshift_kubeconfig }}"
    PATH: "{{ cifmw_path | default(ansible_env.PATH) }}"
  ansible.builtin.shell: |
    {{ cifmw_update_openstack_cmd }} hypervisor list -f json
  register: hypervisor_list
  changed_when: false

- name: Parse the hypervisor list to extract hostnames
  ansible.builtin.set_fact:
    hypervisor_hostnames: "{{ hypervisor_list.stdout | from_json | map(attribute='Hypervisor Hostname') | list }}"

- name: Create a reboot monitor servers script
  ansible.builtin.template:
    src: "monitor_servers.sh.j2"
    dest: "{{ cifmw_update_artifacts_basedir }}/monitor_servers.sh"
    mode: "0775"

- name: Start the monitor servers script
  ansible.builtin.shell: |
    nohup {{ cifmw_update_artifacts_basedir }}/monitor_servers.sh &> /dev/null &
    echo $!
  register: monitor_servers_job

- name: Create a monitor placement monitor script
  ansible.builtin.template:
    src: "monitor_vm_placement.sh.j2"
    dest: "{{ cifmw_update_artifacts_basedir }}/monitor_vm_placement.sh"
    mode: "0775"

- name: Start the monitor placement script
  ansible.builtin.shell: |
    nohup {{ cifmw_update_artifacts_basedir }}/monitor_vm_placement.sh &> /dev/null &
    echo $!
  register: monitor_placement_job

- name: Iterate over each hypervisor for the reboot sequence
  ansible.builtin.include_tasks: reboot_hypervisor.yml
  loop: "{{ hypervisor_hostnames }}"
  loop_control:
    loop_var: hypervisor

- name: Stop the monitor servers script if running
  ansible.builtin.shell: |
    if kill -0 {{ monitor_servers_job.stdout }} &>/dev/null; then
      kill {{ monitor_servers_job.stdout }}
    fi
  register: kill_result
  failed_when: kill_result.rc not in [0, 1] # We can still have a race
                                            # between kill -0 and
                                            # kill, even if unlikely.

- name: Stop the monitor placement script if running
  ansible.builtin.shell: |
    if kill -0 {{ monitor_placement_job.stdout }} &>/dev/null; then
      kill {{ monitor_placement_job.stdout }}
    fi
  register: kill_result
  failed_when: kill_result.rc not in [0, 1]