matrix-docker-ansible-deploy/roles/matrix-base/tasks/sanity_check.yml

---

- set_fact:
    matrix_ansible_outdated_fail_msg: "You are running on Ansible {{ ansible_version.string }}, which is not supported. See our guide about Ansible: https://github.com/spantaleev/matrix-docker-ansible-deploy/blob/master/docs/ansible.md"

- name: Fail if running on Ansible < 2.4
  fail:
    msg: "{{ matrix_ansible_outdated_fail_msg }}"
  when: "ansible_version.major <= 2 and ansible_version.minor < 4"

# Ansible 2.5.0 and 2.5.1 are known to have a bug with `include_tasks` + `with_items`.
# The bug has been fixed in Ansible 2.5.2.
- name: Fail if running on Ansible 2.5.x (lower than 2.5.2)
  fail:
    msg: "{{ matrix_ansible_outdated_fail_msg }}"
  when: "ansible_version.major == 2 and ansible_version.minor == 5 and ansible_version.revision < 2"

# This sanity check is only used to detect uppercase when people override these specific variables.
#
# If people set `host_specific_hostname_identity` without overriding other variables (the general use-case),
# we take care to lower-case it automatically and it won't cause trouble anyway.
- name: Fail if uppercase domain used
  fail:
    msg: "Detected that you're using an uppercase domain name - `{{ item }}`. This will cause trouble. Please use all-lowercase!"
  when: "item != item|lower"
  with_items:
    - "{{ hostname_identity }}"
    - "{{ hostname_matrix }}"
    - "{{ hostname_riot }}"