- name: install GreatSQL
  hosts: greatsql_dbs
  remote_user: root
  ignore_errors: yes
  vars_files: 
    - vars.yml

  tasks:
    - include: check_mysql.yml

    - block:
       - name: modify selinux config file
         lineinfile: dest=/etc/selinux/config regexp='SELINUX=enforcing' line='SELINUX=disabled' backrefs=yes state=present
    
       - name: stop firewalld
         command: /usr/bin/systemctl stop firewalld.service
    
       - name: disable firewalld
         command: /usr/bin/systemctl disable firewalld.service
    
       - name: install jemalloc jemalloc-devel
         raw: yum install -y jemalloc jemalloc-devel
    
       - name: add group mysql
         group: name={{mysql_user}} state=present
    
       - name: add user mysql
         user: name={{mysql_user}} group={{mysql_user}} shell=/sbin/nologin
    
       - name: create data_dir
         file: path={{data_dir}} state=directory owner={{mysql_user}} group={{mysql_user}} mode=0700
    
       - name: extract GreatSQL tarball
         unarchive: src={{work_dir}}/{{file_name}} dest={{extract_dir}} mode=755
    
       - name: backup /etc/my.cnf
         copy: src={{my_cnf}} dest={{my_cnf}}.orig ignore_errors=True
    
       - name: copy my.cnf
         copy: src={{work_dir}}/mysql-support-files/my.cnf dest={{my_cnf}} owner={{mysql_user}} group={{mysql_user}} mode=0644
    
       - name: copy mysqld_pre_systemd
         copy: src={{work_dir}}/mysql-support-files/mysqld_pre_systemd dest={{base_dir}}/bin/ owner={{mysql_user}} group={{mysql_user}} mode=0755
    
       - name: replace mysqld_pre_systemd MYSQL_BASEDIR
         replace:
           path: "{{base_dir}}/bin/mysqld_pre_systemd"
           regexp: '(MYSQL_BASEDIR)=.*'
           replace: '\1={{base_dir}}'

       - name: replace my.cnf server_id settings
         replace:
           path: "{{ my_cnf }}"
           regexp: '(.*server_id.*)=.*'
           replace: '\1= 3306{{ 1024 | random}}'
    
       - name: replace my.cnf group_replication_local_address settings
         replace:
           path: "{{ my_cnf }}"
           regexp: '(.*group_replication_local_address.*)=.*'
           replace: '\1= {{ inventory_hostname }}:33061'

       - name: replace my.cnf group_replication_group_seeds settings
         replace:
           path: "{{ my_cnf }}"
           regexp: '(.*group_replication_group_seeds.*)=.*'
           replace: '\1= {{ mgr_seeds }}'

       - name: replace my.cnf report_host settings
         replace:
           path: "{{ my_cnf }}"
           regexp: '(.*report_host.*)=.*'
           replace: '\1= {{ inventory_hostname }}'

       - name: replace my.cnf basedir
         replace:
           path: "{{ my_cnf }}"
           regexp: 'basedir.*'
           replace: 'basedir = {{ base_dir }}'

       - name: replace my.cnf datadir
         replace:
           path: "{{ my_cnf }}"
           regexp: 'datadir.*'
           replace: 'datadir = {{ data_dir }}'

       - name: replace my.cnf user
         replace:
           path: "{{ my_cnf }}"
           regexp: '^user.*'
           replace: 'user = {{ mysql_user }}'

       - name: replace my.cnf port
         replace:
           path: "{{ my_cnf }}"
           regexp: '^port.*'
           replace: 'port = {{ mysql_port }}'

       - name: copy sysconfig/mysql to /etc/sysconfig/mysql
         copy: src={{work_dir}}/mysql-support-files/sysconfig/mysql dest=/etc/sysconfig owner=root group=root mode=0644
    
       - name: preload jemalloc
         command: /usr/sbin/ldconfig

       - name: copy mysql PATH
         copy: src={{work_dir}}/mysql-support-files/mysql.sh dest=/etc/profile.d/mysql.sh
    
       - name: replace mysql.sh PATH
         replace:
           path: /etc/profile.d/mysql.sh
           regexp: '(.*PATH.*)=.*'
           replace: 'export PATH=$PATH:{{base_dir}}/bin'

       - name: copy greatsql.server
         copy: src={{work_dir}}/mysql-support-files/greatsql.service dest=/usr/lib/systemd/system/ owner=root group=root mode=0644
    
       - name: replace greatsql.service
         replace:
           path: /usr/lib/systemd/system/greatsql.service
           regexp: '(ExecStartPre=)(.*)(/bin/mysqld.*)'
           replace: '\1{{base_dir}}\3'
    
       - name: replace greatsql.service
         replace:
           path: /usr/lib/systemd/system/greatsql.service
           regexp: '(ExecStart=)(.*)(/bin/mysqld.*)'
           replace: '\1{{base_dir}}\3'
    
       - name: reload GreatSQL service
         command: /usr/bin/systemctl daemon-reload

      when: check_mysql_port.stdout == "True" and check_mysql_ps.stdout == "True"

- name: mgr primary
  hosts: greatsql_mgr_primary
  ignore_errors: yes
  vars_files:
    - vars.yml
  tasks:
     - include: check_mysql.yml

     - block:
        - name: start the GreatSQL service on PRIMARY NODE
          command: /usr/bin/systemctl start greatsql

        - name: wait for mysqld start
          shell: sleep {{ wait_for_start }}
          delay: 1

        - name: mgr primary init
          shell: >
                {{ base_dir }}/bin/mysql -uroot -f -S {{ data_dir }}/mysql.sock
                -ANse "SET @@SESSION.SQL_LOG_BIN=0;
                CREATE USER IF NOT EXISTS {{ mgr_user }} IDENTIFIED WITH mysql_native_password BY '{{ mgr_user_pwd }}';
                GRANT REPLICATION SLAVE, BACKUP_ADMIN ON *.* TO {{ mgr_user }};
                CHANGE MASTER TO MASTER_USER='{{ mgr_user }}', MASTER_PASSWORD='{{ mgr_user_pwd }}' FOR CHANNEL 'group_replication_recovery';
                SET GLOBAL group_replication_local_address = '{{ inventory_hostname }}:33061';
                SET GLOBAL group_replication_group_seeds = '{{ mgr_seeds }}';
                SET GLOBAL group_replication_bootstrap_group=ON;
                START GROUP_REPLICATION;
                SET GLOBAL group_replication_bootstrap_group=OFF; "

       when: check_mysql_port.stdout == "True" and check_mysql_ps.stdout == "True"

- name: mgr secondary
  hosts: greatsql_mgr_secondary
  ignore_errors: yes
  vars_files:
    - vars.yml
  tasks:
     - include: check_mysql.yml

     - block:
        - name: start the GreatSQL service on SECONDARY NODE
          command: /usr/bin/systemctl start greatsql

        - name: wait for mysqld start
          shell: sleep {{ wait_for_start }}
          delay: 1

        - name: mgr secondary init
          shell: >
                {{ base_dir }}/bin/mysql -uroot -f -S {{ data_dir }}/mysql.sock
                -ANse "SET @@SESSION.SQL_LOG_BIN=0;
                CREATE USER IF NOT EXISTS {{ mgr_user }} IDENTIFIED WITH mysql_native_password BY '{{ mgr_user_pwd }}';
                GRANT REPLICATION SLAVE, BACKUP_ADMIN ON *.* TO {{ mgr_user }};
                CHANGE MASTER TO MASTER_USER='{{ mgr_user }}', MASTER_PASSWORD='{{ mgr_user_pwd }}' FOR CHANNEL 'group_replication_recovery';
                SET GLOBAL group_replication_local_address = '{{ inventory_hostname }}:33061';
                SET GLOBAL group_replication_group_seeds = '{{ mgr_seeds }}';
                START GROUP_REPLICATION; "

       when: check_mysql_port.stdout == "True" and check_mysql_ps.stdout == "True"

- name: mgr arbitrator
  hosts: greatsql_mgr_arbitrator
  ignore_errors: yes
  vars_files:
    - vars.yml
  tasks:
     - include: check_mysql.yml

     - block:
        - name: replace my.cnf arbitrator settings
          replace:
            path: "{{ my_cnf }}"
            regexp: '(.*_arbitrator.*)=.*'
            replace: '\1= 1'

        - name: start the GreatSQL service on ARBITRATOR NODE
          command: /usr/bin/systemctl start greatsql

        - name: wait for mysqld start
          shell: sleep {{ wait_for_start }}
          delay: 1

        - name: mgr arbitrator init
          shell: >
                {{ base_dir }}/bin/mysql -uroot -f -S {{ data_dir }}/mysql.sock
                -ANse "SET @@SESSION.SQL_LOG_BIN=0;
                CREATE USER IF NOT EXISTS {{ mgr_user }} IDENTIFIED WITH mysql_native_password BY '{{ mgr_user_pwd }}';
                GRANT REPLICATION SLAVE, BACKUP_ADMIN ON *.* TO {{ mgr_user }};
                CHANGE MASTER TO MASTER_USER='{{ mgr_user }}', MASTER_PASSWORD='{{ mgr_user_pwd }}' FOR CHANNEL 'group_replication_recovery';
                SET GLOBAL group_replication_local_address = '{{ inventory_hostname }}:33061';
                SET GLOBAL group_replication_group_seeds = '{{ mgr_seeds }}';
                START GROUP_REPLICATION; "

       when: check_mysql_port.stdout == "True" and check_mysql_ps.stdout == "True"