# Tasks for restoring Redis backups on a cluster

- name: Make sure Redis client is installed on the Target Hosts
  yum:
    name: redis
    state: installed

- name: Get the Redis container image if not user-defined
  command: "/bin/bash docker ps --filter name=.*redis.* --format='{{ '{{' }} .Image {{ '}}' }}'"
  when: redis_container_image is undefined
  register: redis_container_image_cmd_output
  become: true

- name: Convert the Redis container image variable if unknown
  set_fact:
    redis_container_image: "{{ redis_container_image_cmd_output.stdout_lines[0] }}"
  when: redis_container_image is undefined

- name: Get the Redis VIP
  shell: |
    /bin/hiera -c /etc/puppet/hiera.yaml redis_vip
  when: redis_vip is undefined
  register: redis_vip_cmd_output
  become: true

- name: Convert the Redis VIP if unknown
  set_fact:
    redis_vip: "{{ redis_vip_cmd_output.stdout_lines[0] }}"
  when: redis_vip is undefined

- name: Remove any existing Redis backup directory
  file:
    path: "{{ backup_tmp_dir }}/redis"
    state: absent

- name: Create a new Redis backup directory
  file:
    path: "{{ backup_tmp_dir }}/redis"
    state: directory

- name: Copy Redis backup archive from the backup server
  synchronize:
    mode: push
    src: "{{ backup_directory }}/openstack-backup-redis.tar"
    dest: "{{ backup_tmp_dir }}/redis/"
    set_remote_user: false
    ssh_args: "{{ backup_host_ssh_args }}"
  delegate_to: "{{ backup_host }}"

- name: Unarchive the database archive
  shell: |
    /bin/tar --xattrs \
      -zxf {{ backup_tmp_dir }}/redis/openstack-backup-redis.tar \
      -C /

- name: Disable redis-bundle
  pacemaker_resource:
    resource: redis-bundle
    state: disable
    wait_for_resource: true
  become: true
  when: bootstrap_node | bool

- name: Delete the old Redis dump
  file:
    path: /var/lib/redis/dump.rdb
    state: absent
  become: true

- name: Copy the new Redis dump
  copy:
    src: "{{ backup_tmp_dir }}/redis/dump.rdb"
    dest: /var/lib/redis/dump.rdb
    remote_src: yes
  become: true

- name: Create a redis_restore container to restore container-based permissions
  docker_container:
    name: redis_restore
    user: root
    detach: false
    command: "/usr/bin/chown -R redis: /var/lib/redis"
    image: "{{ redis_container_image }}"
    volumes:
      - /var/lib/redis:/var/lib/redis:rw
  become: true

- name: Remove redis_restore container
  docker_container:
    name: redis_restore
    state: absent
  become: true

- name: Enable redis
  pacemaker_resource:
    resource: redis-bundle
    state: enable
    wait_for_resource: true
  become: true
  when: bootstrap_node | bool