---

# This snippet determines if docker_upgrade should be set for the host. If it's already
# set via the inventory we will respect it. Otherwise we check if the current version
# is equal to the either the latest, or the requested docker_version, and set
# docker_upgrade accordingly.

- name: Determine available Docker version
  script: ../../../../common/openshift-cluster/upgrades/files/rpm_versions.sh docker
  register: g_docker_version_result

- name: Check if Docker is installed
  command: rpm -q docker
  register: pkg_check
  failed_when: pkg_check.rc > 1
  changed_when: no

- name: Get current version of Docker
  command: "{{ repoquery_cmd }} --installed --qf '%{version}' docker"
  register: curr_docker_version
  changed_when: false

- name: Get latest available version of Docker
  command: >
    {{ repoquery_cmd }} --qf '%{version}' "docker"
  register: avail_docker_version
  failed_when: false
  changed_when: false

- fail:
    msg: This playbook requires access to Docker 1.10 or later
  # Disable the 1.10 requirement if the user set a specific Docker version
  when: avail_docker_version.stdout | version_compare('1.10','<') and docker_version is not defined

# We respect docker_upgrade=False in the inventory, but True is the default and
# if set in inventory, we still flip it to False here and only set to true if
# they're not already running the required version.
- set_fact:
    docker_upgrade: False
  when: docker_upgrade is not defined or docker_upgrade | bool

- name: Flag for upgrade if Docker version does not equal latest
  set_fact:
    docker_upgrade: true
  when: docker_version is not defined and pkg_check.rc == 0 and curr_docker_version.stdout | version_compare(avail_docker_version.stdout,'<')

- name: Flag for upgrade if Docker version does not equal requested version
  set_fact:
    docker_upgrade: true
  when: docker_version is defined and pkg_check.rc == 0 and curr_docker_version.stdout | version_compare(docker_version,'<')