---
# Copyright 2016, Rackspace US, Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

- name: Gracefully restart mariadb/galera cluster
  hosts: galera_all
  serial: 1
  max_fail_percentage: 0
  gather_facts: false
  user: root
  tasks:
    - name: Stop mariadb
      service:
        name: mariadb
        state: stopped
      retries: 5
      delay: 10

    - name: Stop container
      lxc_container:
        name: "{{ inventory_hostname }}"
        state: "stopped"
      delegate_to: "{{ physical_host }}"
      when: not hostvars[inventory_hostname]['is_metal']

    - name: Start container
      lxc_container:
        name: "{{ inventory_hostname }}"
        state: "started"
      delegate_to: "{{ physical_host }}"
      when: not hostvars[inventory_hostname]['is_metal']

    - name: Start mariadb
      service:
        name: mariadb
        state: started
      retries: 5
      delay: 10
      when: hostvars[inventory_hostname]['is_metal']

  post_tasks:
    - name: Wait for mariadb port 3306 to be available
      wait_for:
        port: "3306"
        host: "{{ ansible_host | default(ansible_ssh_host | default(inventory_hostname)) }}"
      retries: 10
      delay: 10
      delegate_to: "{{ groups['utility_all'][0] }}"

    - name: Check that WSREP is ready and Synced
      shell: "/usr/bin/mysqladmin extended-status | egrep '(wsrep_local_state_comment)'"
      register: mariadb_ready
      until:
        - mariadb_ready.rc == 0
        - (mariadb_ready.stdout).find("Synced") != -1
      retries: 60
      delay: 1