okd/roles/openshift_logging_mux/tasks/determine_version.yaml

---
# debating making this a module instead?
- fail:
    msg: Missing version to install provided by 'openshift_logging_image_version'
  when: not openshift_logging_image_version or openshift_logging_image_version == ''

- set_fact:
    mux_version: "{{ __latest_mux_version }}"
  when: openshift_logging_image_version == 'latest'

# should we just assume that we will have the correct major version?
- set_fact: mux_version="{{ openshift_logging_image_version | regex_replace('^v?(?P<major>\d)\.(?P<minor>\d).*$', '3_\\g<minor>') }}"
  when: openshift_logging_image_version != 'latest'

- fail:
    msg: Invalid version specified for mux
  when: mux_version not in __allowed_mux_versions