---
# Copyright 2020 Red Hat, Inc.
# All Rights Reserved.
#
# 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.
#
# This role is used to simplify the management of HA containers within TripleO
# Specifically it does the following:
# 1) It runs the so-called init bundles on the host which are in charge of creating the pcmk resources
#    via puppet (or to tweak them in case they changed on a redeploy)
# 2) They trigger calling the pacemaker_restart.sh script when the config for the HA service has changed
#    This script will restart the HA resource globally from the bootstrap node in case the config changed there
#    and it will only restart the service on the single node when the configuration changed and we are doing
#    a minor update.

# The following variables are required:
# - tripleo_ha_wrapper_service_name: The name of the tripleo_service being used (e.g. mysql)
# - tripleo_ha_wrapper_resource_name: The name of the ocf resource being used (e.g. galera)
# - tripleo_ha_wrapper_bundle_name: The name of the pacemaker bundle being used (e.g. galera-bundle)
# - tripleo_ha_wrapper_resource_state: The desired state of the resource (e.g. Master)
# - tripleo_ha_wrapper_puppet_execute: 'include ::tripleo::....'
# - tripleo_ha_wrapper_puppet_tags: 'pacemaker::resource::bundle,...'
# - tripleo_ha_wrapper_puppet_config_volume: the folder name to lookd for md5 hashes
# - tripleo_ha_wrapper_puppet_debug: Should puppet be run in debug mode (defaults to false)
# - tripleo_ha_wrapper_minor_update: (true|'') is this a minor update workflow or not

- name: Gather variables for each operating system
  include_vars: "{{ item }}"
  with_first_found:
    - skip: true
      files:
        - "{{ ansible_facts['distribution'] | lower }}-{{ ansible_facts['distribution_version'] | lower }}.yml"
        - "{{ ansible_facts['distribution'] | lower }}-{{ ansible_facts['distribution_major_version'] | lower }}.yml"
        - "{{ ansible_facts['os_family'] | lower }}-{{ ansible_facts['distribution_major_version'] | lower }}.yml"
        - "{{ ansible_facts['distribution'] | lower }}.yml"
        - "{{ ansible_facts['os_family'] | lower }}-{{ ansible_facts['distribution_version'].split('.')[0] }}.yml"
        - "{{ ansible_facts['os_family'] | lower }}.yml"
  tags:
    - always

- name: "Run init bundle puppet on the host for {{ tripleo_ha_wrapper_service_name }}"
  shell: |
    puppet apply {{ (tripleo_ha_wrapper_puppet_debug | default(false) | bool) | ternary('--debug --verbose', '') }} --detailed-exitcodes \
    --summarize --color=false --modulepath '{{ tripleo_ha_wrapper_puppet_modulepath }}' --tags '{{ tripleo_ha_wrapper_puppet_tags }}' \
    -e '{{ tripleo_ha_wrapper_puppet_execute }}'
  register: puppet_run
  changed_when: puppet_run.rc == 2
  failed_when: puppet_run.rc != 2 and puppet_run.rc != 0

- name: Run pacemaker restart if the config file for the service changed
  tripleo_diff_exec:
    command: >-
      {{ tripleo_ha_wrapper_pcmk_restart_script }} {{ tripleo_ha_wrapper_service_name }}
      {{ tripleo_ha_wrapper_resource_name }} {{ tripleo_ha_wrapper_bundle_name }}
      {{ tripleo_ha_wrapper_resource_state }}
    state_file: "{{ tripleo_ha_wrapper_config_basedir }}/{{ tripleo_ha_wrapper_puppet_config_volume }}.md5sum"
    state_file_suffix: "{{ tripleo_ha_wrapper_config_suffix }}"
    environment:
      TRIPLEO_MINOR_UPDATE: "{{ tripleo_ha_wrapper_minor_update|default('') }}"