ansible-freebsd-jailhost-tools/tasks/jail/update.yml

- name: Looking up if the {{ jail_name }} jail needs to be replaced, setting up variables
  set_fact:
    jail_{{ jail_name }}_must_replace: >-
      {{
        lookup(
          'pipe', '/usr/sbin/chroot ' +
          dynamic_jails_path + '/' +
          vars['jail_' + jail_name +  '_existing_dirs'][0] +
          ' /bin/freebsd-version -u'
        ) != latest_snapshot
      }}
    jail_{{ jail_name }}_newest_id: >-
      {{
        vars['jail_' + jail_name + '_existing_dirs'][0]
      }}

# ---
# UPDATING the existing jail when the base system is not outdated
# ---
- block:

  - name: Check if packages have to be upgraded
    command:
      /usr/sbin/pkg
      -j {{ vars['jail_' + jail_name + '_newest_id'] }}
      upgrade --dry-run -y
    register: jail_pkgs
    ignore_errors: true
    changed_when: jail_pkgs.rc != 0

  - name: Namespacing task return value
    set_fact:
      jail_{{ jail_name }}_pkgs: '{{ jail_pkgs }}'

  - name: Upgrade packages when necessary
    command:
      /usr/sbin/pkg
      -j {{ vars['jail_' + jail_name + '_newest_id'] }}
      upgrade -y
    when: '{{ vars["jail_" + jail_name + "_pkgs"] | changed }}'

  when: '{{ not vars["jail_" + jail_name + "_must_replace"] }}'



# ---
# CREATING a new jail when the base system is outdated
# ---
- block:

  - include: '{{ vars["jail_" + jail_name + "_include_update_precreate"] | default(jail_include_noop) }}'
    vars:
      include_type: '{{ "jail_" + jail_name + "_include_update_precreate" }}'

  - name: Creating a new {{ jail_name }} jail
    include: '{{ ansible_roles_path }}/karolyi.ansible-freebsd-jailhost-tools/tasks/jail/create.yml'

  - include: '{{ vars["jail_" + jail_name + "_include_update_prestart"] | default(jail_include_noop) }}'
    vars:
      include_type: '{{ "jail_" + jail_name + "_include_update_prestart" }}'

  - name: Starting the new {{ jail_name }} jail
    include: '{{ ansible_roles_path }}/karolyi.ansible-freebsd-jailhost-tools/tasks/jail/start.yml'

  - include: '{{ vars["jail_" + jail_name + "_include_update_poststart"] | default(jail_include_noop) }}'
    vars:
      include_type: '{{ "jail_" + jail_name + "_include_update_poststart" }}'

  when: '{{ vars["jail_" + jail_name + "_must_replace"] }}'