---
# 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.

# Unfortunately yum is case-insensitive, and RDO has mariadb-* packages,
# while the MariaDB repo has MariaDB-* packages and they conflict.
# To work around this we have to query for any installed RDO/CentOS
# packages using rpm, then remove them. We have to remove them without
# dependencies, otherwise for distro package installation types on shared
# hosts it removes far too many packages.
- name: Remove conflicting packages
  shell: |
    exit_code=0
    for pkg in {{ galera_mariadb_distro_packages_remove | join(' ') }}; do
      if rpm --query --quiet ${pkg}; then
        rpm -ev --nodeps ${pkg}
        exit_code=2
      fi
    done
    exit ${exit_code}
  register: _remove_existing_mariadb_packages
  changed_when: _remove_existing_mariadb_packages.rc == 2
  failed_when: _remove_existing_mariadb_packages.rc not in [0, 2]
  args:
    warn: no
    executable: /bin/bash

# In CentOS systems, /etc/my.cnf.d may already exist on the
# system. We need to ensure that it is removed if that is true so
# that we can replace it with symlinks to the directories expected
# to be used by the MariaDB packages instead.
- name: Stat /etc/my.cnf.d
  stat:
    path: /etc/my.cnf.d
    get_attributes: no
    get_checksum: no
    get_mime: no
  register: mycnfd_stat

- name: Destroy my.cnf.d dir if is dir
  file:
    path: /etc/my.cnf.d
    state: absent
    force: true
  when:
    - mycnfd_stat.stat.isdir is defined
    - mycnfd_stat.stat.isdir

# We replace the default paths for the system with symlinks to
# the paths used by the MariaDB packages so ensure that any other
# system expectations are still met.
- name: Update the local file system CRUD
  file:
    src: "{{ item.src | default(omit) }}"
    path: "{{ item.path }}"
    state: "{{ item.state }}"
    force: "{{ item.force | default(omit) }}"
    mode: "{{ item.mode | default(omit) }}"
  with_items:
    - path: "/etc/mysql"
      state: "directory"
      mode: '0755'
    - path: "/etc/mysql/conf.d"
      state: "directory"
    - src: "/usr/lib64/galera"
      path: "/usr/lib/galera"
      state: "link"
      force: true
    - src: "/etc/mysql/conf.d"
      path: "/etc/my.cnf.d"
      state: "link"
      force: true
    - src: "/etc/mysql/my.cnf"
      path: "/etc/my.cnf"
      state: "link"
      force: true

- name: If a keyfile is provided, copy the gpg keyfile to the key location
  copy:
    src: "gpg/{{ item.key | basename }}"
    dest: "{{ item.key }}"
    mode: '0644'
  with_items: "{{ galera_gpg_keys }}"

- name: Install gpg keys
  rpm_key: "{{ key }}"
  with_items: "{{ galera_gpg_keys }}"
  loop_control:
    loop_var: key
  register: _add_yum_keys
  until: _add_yum_keys is success
  retries: 5
  delay: 2

- name: Add galera repo
  yum_repository:
    name: "{{ galera_repo.name }}"
    description: "{{ galera_repo.description }}"
    baseurl: "{{ galera_repo.baseurl }}"
    gpgkey: "{{ galera_repo.gpgkey | default(omit) }}"
    gpgcheck: yes
    enabled: yes
    priority: 25
  when: galera_repo != {}
  register: add_galera_repos
  until: add_galera_repos is success
  retries: 5
  delay: 2

- name: Enable module_hotfixes
  lineinfile:
    dest: "/etc/yum.repos.d/{{ galera_repo.name }}.repo"
    line: "module_hotfixes=1"
    regexp: "^module_hotfixes"
    insertafter: "^enabled"
  when: galera_repo != {}

# When changing the repo URL, the metadata does
# not reliably update, resulting in the right
# URL being used, but the wrong package list.
# This is why we force the metadata to be
# cleaned out whenever the repo config changes.
- name: Force the expiry of the repo metadata
  command: "{{ ansible_facts['pkg_mgr'] }} clean metadata"
  args:
    warn: no
  when: add_galera_repos is changed
  tags:
    - skip_ansible_lint

- name: Install galera role remote packages
  package:
    name: "{{ galera_packages_list }}"
    state: "{{ galera_package_state }}"
  register: install_remote_packages
  until: install_remote_packages is success
  retries: 5
  delay: 2
  notify:
    - Manage LB
    - Restart all mysql