# Tasks for dumping a Redis backup from each host and pulling it to the
# Backup Server.

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

- 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: Get the Redis masterauth password
  shell: |
    /bin/hiera -c /etc/puppet/hiera.yaml redis::masterauth
  when: redis_masterauth_password is undefined
  register: redis_masterauth_password_cmd_output
  become: true
  no_log: true

- name: Convert the Redis masterauth password if unknown
  set_fact:
    redis_masterauth_password: "{{ redis_masterauth_password_cmd_output.stdout_lines[0] }}"
  when: redis_masterauth_password is undefined
  no_log: true

- 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: Run the redis backup command
  command: /bin/redis-cli -h {{ redis_vip }} -a {{ redis_masterauth_password }} save
  no_log: true

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

# The archive module is pretty limited. Using a shell instead.
- name: Archive the OpenStack Redis dump
  shell: |
    /bin/tar --ignore-failed-read --xattrs \
      -zcf {{ backup_tmp_dir }}/redis/openstack-backup-redis.tar \
      {{ backup_tmp_dir }}/redis/dump.rdb

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

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