---
- fail:
    msg: "MariaDB cluster was not found. Is your inventory correct?"
  when: not has_cluster | bool

- name: Checking if and mariadb containers are running
  kolla_docker:
    name: "mariadb"
    action: "get_container_state"
  register: container_state

- fail:
    msg: "There are running MariaDB nodes, please stop them first."
  when: container_state.Running | bool
  any_errors_fatal: True

- name: Cleaning up temp file on mariadb hosts
  file: path=/tmp/kolla_mariadb_grastate.dat state=absent
  changed_when: false
  check_mode: no

- name: Cleaning up temp file on localhost
  local_action: file path=/tmp/kolla_mariadb_recover_inventory_name state=absent
  changed_when: false
  check_mode: no
  run_once: true

- block:
  - name: Copying grastate.dat file from mariadb container
    command: docker cp mariadb:/var/lib/mysql/grastate.dat /tmp/kolla_mariadb_grastate.dat
    changed_when: false

  - name: Print the content of grastate.dat file
    command: cat /tmp/kolla_mariadb_grastate.dat
    register: cat_grastate
    changed_when: false

  - name: Registering mariadb seqno variable
    set_fact:
      seqno: "{{ (cat_grastate.stdout|from_yaml).seqno }}"
    changed_when: false

  - name: Comparing seqno value on all mariadb hosts
    shell: "if [[ {{ hostvars[inventory_hostname]['seqno'] }} -lt {{ hostvars[item]['seqno'] }} ]]; then echo {{ hostvars[item]['seqno'] }}; fi"
    args:
      executable: /bin/bash
    with_items: "{{ groups['mariadb'] }}"
    changed_when: false
    register: seqno_compare

  - name: Writing hostname of host with the largest seqno to temp file
    local_action: copy content={{ inventory_hostname }} dest=/tmp/kolla_mariadb_recover_inventory_name mode=0644
    changed_when: false
    when: seqno_compare.results | map(attribute='stdout') | join('') == ""

  - name: Registering mariadb_recover_inventory_name from temp file
    set_fact:
      mariadb_recover_inventory_name: "{{ lookup('file', '/tmp/kolla_mariadb_recover_inventory_name') }}"
  when:
    - mariadb_recover_inventory_name is not defined

- set_fact:
    bootstrap_host: "{{ mariadb_recover_inventory_name }}"
    master_host: "{{ mariadb_recover_inventory_name }}"
  changed_when: true
  notify:
    - Starting first MariaDB container
    - restart slave mariadb
    - restart master mariadb

- name: Cleaning up temp file on mariadb hosts
  file: path=/tmp/kolla_mariadb_grastate.dat state=absent
  changed_when: false
  check_mode: no

- name: Cleaning up temp file on localhost
  local_action: file path=/tmp/kolla_mariadb_recover_inventory_name state=absent
  changed_when: false
  check_mode: no
  run_once: true