# tasks file for ansible-role-container-registry
# the tasks will ensure docker is up to date.

- block:
    - name: set package manager to yum
      set_fact:
        registry_pkg_manager: yum
      when:
        - ansible_os_family == 'RedHat'
        - ansible_distribution_major_version|int == 7

    - name: set package manager to dnf
      set_fact:
        registry_pkg_manager: dnf
      when: (ansible_os_family == 'RedHat' and ansible_distribution_major_version|int > 7) or (ansible_distribution == 'Fedora')


    - name: can docker be updated
      shell: "{{ registry_pkg_manager }} check-update docker"
      register: docker_check_update
      failed_when: docker_check_update.rc not in [0, 100]
      changed_when: docker_check_update.rc == 100

    - name: set docker_rpm_needs_update fact
      set_fact: docker_rpm_needs_update={{ docker_check_update.rc == 100 }}

    - name: stop all containers before update
      # xargs is preferable to docker stop $(docker ps -q) as that might generate a
      # a too long command line
      shell: docker ps -q | xargs --no-run-if-empty -n1 docker stop
      when: docker_rpm_needs_update

    - name: ensure docker is installed
      package:
        name: docker
        state: present
      when: docker_rpm_needs_update

    - name: update the docker package (yum)
      yum: name=docker state=latest update_cache=yes # cache for https://bugs.launchpad.net/tripleo/+bug/1703830
      notify: restart docker service
      when:
        - docker_rpm_needs_update
        - registry_pkg_manager == 'yum'

    - name: update the docker package (dnf)
      dnf: name=docker state=latest
      notify: restart docker service
      when:
        - docker_rpm_needs_update
        - registry_pkg_manager == 'dnf'

  # Note(mfedosin): explicitly skip all preceding tasks if we don't need reconfiguration.
  when: not container_registry_skip_reconfiguration