okd/roles/openshift_logging_fluentd/tasks/determine_version.yaml

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

- set_fact:
    fluentd_version: "{{ __latest_fluentd_version }}"
  when: openshift_logging_fluentd_image_version == 'latest'

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

- fail:
    msg: Invalid version specified for Fluentd
  when: fluentd_version not in __allowed_fluentd_versions