##############################################################################
# Copyright (c) 2016 HUAWEI TECHNOLOGIES CO.,LTD and others.
#
# All rights reserved. This program and the accompanying materials
# are made available under the terms of the Apache License, Version 2.0
# which accompanies this distribution, and is available at
# http://www.apache.org/licenses/LICENSE-2.0
##############################################################################
---
- name: Register RECOVERY
  set_fact: RECOVERY_ENV={{RECOVERY_ENV | default('False')}}

- name: killall mysqld processes
  shell: sudo killall -9 mysqld
  when: RECOVERY_ENV
  ignore_errors: True

- name: get cluster status
  shell: mysql --silent --skip-column-names -e 'SHOW STATUS LIKE "wsrep_evs_state"'|awk '{print $2}'
  register: cluster_status
  when:
    - inventory_hostname == haproxy_hosts.keys()[0]

- name: start first node to create new cluster
  shell: service mysql start --wsrep-new-cluster
  when: |
    inventory_hostname == haproxy_hosts.keys()[0]
    and not cluster_status.stdout | search("OPERATIONAL")

- name: wait for cluster ready
  shell: mysql --silent --skip-column-names -e 'SHOW STATUS LIKE "wsrep_evs_state"'|awk '{print $2}'  
  register: cluster_status
  until: cluster_status|success
  failed_when: not cluster_status.stdout | search("OPERATIONAL")
  retries: 10
  delay: 3
  when: |
    inventory_hostname == haproxy_hosts.keys()[0]
    and not cluster_status.stdout | search("OPERATIONAL")

- name: if I in the cluster nodes
  shell: mysql --silent --skip-column-names -e 'SHOW STATUS LIKE "wsrep_incoming_addresses"'|awk '{print $2}'
  register: cluster_nodes
  changed_when: false

- name: restart other nodes and join cluster
  service:
    name: mysql
    state: restarted
    enabled: yes
  when: |
    inventory_hostname != haproxy_hosts.keys()[0]
    and not cluster_nodes.stdout | search( "{{ internal_ip }}")

- name: remove unused user
  script: remove_user.sh
  when: ansible_os_family == "RedHat"

- name: restart first nodes
  service:
    name: mysql
    state: restarted
  when: |
    inventory_hostname == haproxy_hosts.keys()[0] 
    and haproxy_hosts|length > 1