- name: Setting node_nums variable
  set_fact: node_nums={{ groups.mariadb|length }}

- name: To terminate execution
  fail:
    msg: "MariaDB in master-master mode. The value must have 2 nodes,please checking configurations/hosts -> mariadb"
  when: node_nums != '2'

- name: Creating directory
  file:
    state: directory
    owner: ods
    group: root    
    path: '{{ deploy_dir }}/{{ container_name }}/{{ item.dir }}'
  with_items:
    - { dir: 'config' }
    - { dir: 'logs' }  
    - { dir: 'monitor' }  
    
- name: Copying image to {{ deploy_dir }}/{{ container_name }}/
  copy:
    src: 'files/{{ image_name }}-{{ image_tag }}.tar'
    dest: '{{ deploy_dir }}/{{ container_name }}/'
    force: true
  notify:
    - Loading Image

- name: Copying image to {{ deploy_dir }}/{{ container_name }}/monitor
  copy:
    src: 'files/mysqld_exporter-v1.0.tar'
    dest: '{{ deploy_dir }}/{{ container_name }}/monitor/'
    force: true
  notify:
    - Loading Exporter Image

- name: Copying Mariadb config files
  template:
    src: '{{ item.src }}'
    dest: '{{ item.dest }}'
    mode: 0644
  with_items:
    - { src: 'my.cnf.j2', dest: '{{ deploy_dir }}/{{ container_name }}/config/my.cnf' }
    - { src: 'docker-compose.yml.j2', dest: '{{ deploy_dir }}/{{ container_name }}/docker-compose.yml' }
  notify:
    - Start Container

- meta: flush_handlers    
    
- name: Waitting for MariaDB running,20s
  shell: sleep 20

- name: Creating mariadb readonly user
  shell: mysql -uroot -h{{ inventory_hostname }} -p{{ mariadb_default_pin }} -e "CREATE USER IF NOT EXISTS '{{ mariadb_query_username}}'@'%' IDENTIFIED BY '{{ mariadb_query_pin }}' WITH MAX_USER_CONNECTIONS 3;GRANT PROCESS, REPLICATION CLIENT, SELECT ON *.* TO '{{ mariadb_query_username}}'@'%';FLUSH PRIVILEGES;"
  
- name: change mariadb remote authority
  shell: mysql -uroot -h{{ inventory_hostname }} -p{{ mariadb_default_pin }} -e"use mysql;grant all privileges on *.* to 'root'@'%' identified by '{{ mariadb_default_pin }}' with grant option;FLUSH PRIVILEGES;"

- name: copy pyMysql.zip
  unarchive: 
    src: files/pyMysql.zip 
    dest: /tmp/
  register: copy_info

- name: pip install pyMysql
  shell: cd /tmp/pyMysql && pip install --ignore-installed *
  when: copy_info.changed

- name: Get mariadb slave_status
  mysql_info:
    login_host: '{{ groups.mariadb[0] }}'
    login_user: root
    login_password: '{{ mariadb_default_pin }}'
    filter: slave_status
  register: mariadb_info

- name: change_slave_to_master1
  mysql_replication:
    login_unix_socket: "{{ deploy_dir }}/{{ container_name }}/data/mysql.sock"
    login_host: "{{ groups.mariadb[1] }}"
    login_port: "3306"
    login_user: root
    login_password: "{{ mariadb_default_pin }}"
    master_host: "{{ groups.mariadb[0] }}"
    master_user: root
    master_password: "{{ mariadb_default_pin }}"
    master_port: "3306"
    mode: changemaster
  run_once: true
  delegate_to: '{{ groups.mariadb[1] }}'
  tags:
    - change_slave_to_master1

- name: start_slave1
  mysql_replication:
    login_unix_socket: "{{ deploy_dir }}/{{ container_name }}/data/mysql.sock"
    login_user: root
    login_host: "{{ inventory_hostname }}"
    login_port: "3306"
    login_password: "{{ mariadb_default_pin }}"
    mode: startslave
  tags:
    - start_slave1
  run_once: true
  delegate_to: '{{ groups.mariadb[1] }}'

- name: change_slave_to_master2
  mysql_replication:
    login_unix_socket: "{{ deploy_dir }}/{{ container_name }}/data/mysql.sock"
    login_host: "{{ groups.mariadb[0] }}"
    login_port: "3306"
    login_user: root
    login_password: "{{ mariadb_default_pin }}"
    master_host: "{{ groups.mariadb[1] }}"
    master_user: root
    master_password: "{{ mariadb_default_pin }}"
    master_port: "3306"
    mode: changemaster
  run_once: true
  delegate_to: '{{ groups.mariadb[0] }}'
  tags:
    - change_slave_to_master2

- name: start_slave2
  mysql_replication:
    login_unix_socket: "{{ deploy_dir }}/{{ container_name }}/data/mysql.sock"
    login_user: root
    login_host: "{{ inventory_hostname }}"
    login_port: "3306"
    login_password: "{{ mariadb_default_pin }}"
    mode: startslave
  tags:
    - start_slave2
  run_once: true
  delegate_to: '{{ groups.mariadb[0] }}'
 
- name: get_slave_info
  mysql_replication:
    login_host: 127.0.0.1
    login_user: root
    login_port: "3306"
    login_password: "{{ mariadb_default_pin }}"
    mode: getslave
  register: info
  tags:
    - get_slave_info

- name: Copying Mariadb config files
  template:
    src: 'exporter_docker-compose.yml.j2'
    dest: '{{ deploy_dir }}/{{ container_name }}/monitor/docker-compose.yml'
    mode: 0644
  notify:
    - Start Exporter Container