---
# Copyright 2015, 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: Check if mysql is running
  command: /usr/bin/mysqladmin --defaults-file=/etc/mysql/debian.cnf ping
  ignore_errors: true
  changed_when: mysql_running.rc != 0
  register: mysql_running
  notify: Restart mysql
  tags:
    - galera-cluster-state-check

- name: Check for cluster state failure
  fail:
    msg: |
      The cluster may be broken, mysql is not running but appears to be
      installed. Fix it before re-running the playbook or override with
      'openstack-ansible -e galera_ignore_cluster_state=true galera-install.yml'.
  when:
    - not galera_ignore_cluster_state | bool
    - mysql_running.rc == 1
    - mysql_running.stderr | search("Check that mysqld is running and that the socket")
  tags:
    - galera-cluster-state-check

- name: Gather mysql facts
  mysql_status_facts:
  ignore_errors: true
  tags:
    - galera-cluster-state-check

- name: Check for cluster state failure
  fail:
    msg: |
      The cluster may be broken, mysql is running but unable to gather mysql facts.
      Fix it before re-running the playbook or override with
      'openstack-ansible -e galera_ignore_cluster_state=true galera-install.yml'.
  when:
    - not galera_ignore_cluster_state | bool
    - mysql_running.rc == 0
    - mysql_status is not defined
  tags:
    - galera-cluster-state-check

- name: Check for cluster state failure
  fail:
    msg: |
      wsrep_incoming_addresses does not match across the cluster. Please fix before
      re-running the playbooks or override with
      'openstack-ansible -e galera_ignore_cluster_state=true galera-install.yml'.
  with_items: play_hosts
  when:
    - not galera_ignore_cluster_state | bool
    - mysql_running.rc == 0
    - mysql_status['wsrep_incoming_addresses'] != hostvars[item]['mysql_status']['wsrep_incoming_addresses']
  tags:
    - galera-cluster-state-check

- set_fact:
    galera_existing_cluster: true
  when: mysql_running.rc == 0
  tags:
    - galera-cluster-state-check