- name: Check if Zuul Executor containers are running
  # It is possible they are stopped due to some external circumstance.
  # NOTE: docker-compose ps -q reports exited containers unlike docker ps -q
  command:
    cmd: docker-compose ps -q
    chdir: /etc/zuul-executor
  become: true
  become_user: root
  register: executor_container_list
- name: Gracefully stop Zuul Executor
  shell:
    cmd: docker-compose exec -T executor zuul-executor graceful
    chdir: /etc/zuul-executor
  become: true
  become_user: root
  # Only run the docker exec command if a container is running
  when: executor_container_list.stdout_lines | length > 0
  register: ze_graceful
  failed_when:
    - ze_graceful.rc != 0
    # If the exec fails because the container is not running we continue.
    - "'No container found' not in ze_graceful.stderr"
- name: Wait for Zuul Executor to stop
  shell:
    cmd: docker-compose ps -q | xargs docker wait
    chdir: /etc/zuul-executor
  become: true
  become_user: root
  when: executor_container_list.stdout_lines | length > 0
- name: Remove Zuul Executor containers
  shell:
    cmd: docker-compose down
    chdir: /etc/zuul-executor
  become: true
  become_user: root