- name: Developer Certificate of Origin (DCO) license check
  shell:
    cmd: |
      set -e
      result=0
      for commit in $(git cherry -v origin/{{ zuul.branch }} HEAD | cut -d " " -f2)
      do
        if ! git show -s $commit | grep -q "Signed-off-by:"; then
          echo "---"
          git show -s $commit
          echo "---"
          echo "does not have a Signed-off-by header"
          result=1
        fi
      done
      exit $result
    chdir: "{{ zuul_work_dir }}"
    executable: /bin/bash
  register: _dco
  failed_when: _dco.rc > 1

- name: License check failed
  fail:
    msg: "{{ dco_license_failure }}"
  when: _dco.rc != 0