---
# Copyright 2017, 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: Pull systemd version
  command: "systemctl --version"
  changed_when: false
  register: get_systemd_version
  check_mode: no
  tags:
    # Avoid ANSIBLE0006 lint issue: systemctl used in place of systemd module
    - skip_ansible_lint
    - always

- name: Set systemd version
  set_fact:
    systemd_version: "{{ get_systemd_version.stdout_lines[0].split()[-1] }}"
  tags:
    - always

- name: Create TEMP run dir
  file:
    path: "{{ item.systemd_run_dir | default(systemd_run_dir) }}/{{ item.systemd_slice_name | default(systemd_slice_name) | replace(' ', '_') }}"
    state: directory
    owner: "{{ item.systemd_user_name | default(systemd_user_name) }}"
    group: "{{ item.systemd_group_name | default(systemd_group_name) }}"
    mode: "02755"
  loop: "{{ systemd_services }}"
  loop_control:
    label: "{{ loop_label | to_json }}"
  vars:
    loop_label:
      path: "{{ item.systemd_run_dir | default(systemd_run_dir) }}/{{ item.systemd_slice_name | default(systemd_slice_name) | replace(' ', '_') }}"
      owner: "{{ item.systemd_user_name | default(systemd_user_name) }}"
      group: "{{ item.systemd_group_name | default(systemd_group_name) }}"
  tags:
    - systemd-service

- name: Create TEMP service lock dir
  file:
    path: "{{ item.systemd_lock_dir | default(systemd_lock_dir) }}/{{ item.systemd_slice_name | default(systemd_slice_name) | replace(' ', '_') }}"
    state: directory
    owner: "{{ item.systemd_user_name | default(systemd_user_name) }}"
    group: "{{ item.systemd_group_name | default(systemd_group_name) }}"
    mode: "02755"
  loop: "{{ systemd_services }}"
  loop_control:
    label: "{{ loop_label | to_json }}"
  vars:
    loop_label:
      path: "{{ item.systemd_lock_dir | default(systemd_lock_dir) }}/{{ item.systemd_slice_name | default(systemd_slice_name) | replace(' ', '_') }}"
      owner: "{{ item.systemd_user_name | default(systemd_user_name) }}"
      group: "{{ item.systemd_group_name | default(systemd_group_name) }}"
  tags:
    - systemd-service

- name: Create service.d overrides dir
  file:
    path: "/etc/systemd/system/{{ item.service_name | replace(' ', '_') }}.service.d"
    state: directory
    owner: "{{ item.systemd_user_name | default(systemd_user_name) }}"
    group: "{{ item.systemd_group_name | default(systemd_group_name) }}"
    mode: "02755"
  when: "'systemd_overrides' in item"
  loop: "{{ systemd_services }}"
  loop_control:
    label: "{{ loop_label | to_json }}"
  vars:
    loop_label: 
      path: "/etc/systemd/system/{{ item.service_name | replace(' ', '_') }}.service.d"
      owner: "{{ item.systemd_user_name | default(systemd_user_name) }}"
      group: "{{ item.systemd_group_name | default(systemd_group_name) }}"
  tags:
    - systemd-service

- name: Create tmpfiles.d entry
  template:
    src: "systemd-tmpfiles.j2"
    dest: "/etc/tmpfiles.d/{{ item.systemd_tempd_prefix | default(systemd_tempd_prefix) }}-{{ item.service_name | replace(' ', '_') }}.conf"
  loop: "{{ systemd_services }}"
  loop_control:
    label: "{{ loop_label | to_json }}"
  vars:
    loop_label:
      src: "systemd-tmpfiles.j2"
      dest: "/etc/tmpfiles.d/{{ item.systemd_tempd_prefix | default(systemd_tempd_prefix) }}-{{ item.service_name | replace(' ', '_') }}.conf"
  tags:
    - systemd-service

- name: Place the systemd service
  openstack.config_template.config_template:
    src: "systemd-service.j2"
    dest: "/etc/systemd/system/{{ item.service_name | replace(' ', '_') }}.service"
    config_overrides: "{{ item.config_overrides | default(systemd_service_config_overrides) }}"
    config_type: "ini"
  loop: "{{ systemd_services }}"
  loop_control:
    label: "{{ loop_label | to_json }}"
  vars:
    loop_label:
      src: "systemd-service.j2"
      dest: "/etc/systemd/system/{{ item.service_name | replace(' ', '_') }}.service"
      config_overrides: "{{ item.config_overrides | default(systemd_service_config_overrides) }}"
      config_type: "ini"
  when: not (item.systemd_overrides_only | default(False) | bool)
  notify:
    - systemd service changed
  register: systemd_services_result
  tags:
    - systemd-service

- name: Place the systemd override
  template:
    src: "systemd-service-overrides.j2"
    dest: "/etc/systemd/system/{{ item.service_name | replace(' ', '_') }}.service.d/override.conf"
  loop: "{{ systemd_services }}"
  loop_control:
    label: "{{ loop_label | to_json }}"
  vars:
    loop_label:
      src: "systemd-service-overrides.j2"
      dest: "/etc/systemd/system/{{ item.service_name | replace(' ', '_') }}.service.d/override.conf"
  when: "'systemd_overrides' in item"
  notify:
    - systemd service changed
  register: systemd_override_result
  tags:
    - systemd-service

- name: Place the systemd timer
  template:
    src: "systemd-timer.j2"
    dest: "/etc/systemd/system/{{ item.service_name | replace(' ', '_') }}.timer"
    mode: "0644"
    owner: "root"
    group: "root"
  when:
    - item.timer is defined
  loop: "{{ systemd_services }}"
  loop_control:
    label: "{{ loop_label | to_json }}"
  vars:
    loop_label:
      src: "systemd-timer.j2"
      dest: "/etc/systemd/system/{{ item.service_name | replace(' ', '_') }}.timer"
  notify:
    - systemd service changed
  register: systemd_timer_result
  tags:
    - systemd-service

- name: Place the systemd socket
  template:
    src: "systemd-socket.j2"
    dest: "/etc/systemd/system/{{ item.1.socket_name | replace(' ', '_') }}.socket"
    mode: "0644"
    owner: "root"
    group: "root"
  loop: "{{ systemd_services | subelements('sockets', skip_missing=True) }}"
  loop_control:
    label: "{{ loop_label | to_json }}"
  vars:
    loop_label:
      src: "systemd-socket.j2"
      dest: "/etc/systemd/system/{{ item.1.socket_name | replace(' ', '_') }}.socket"
  notify:
    - systemd socket changed
    - systemd service changed
  register: systemd_socket
  tags:
    - systemd-service

- name: Reload systemd on unit change
  systemd:
    daemon_reload: yes
  when:
    - (systemd_services_result is changed) or
      (systemd_timer_result is changed) or
      (systemd_override_result is changed ) or
      (systemd_socket.results | selectattr('changed', 'true') | length > 0)

- name: Including systemd_load tasks
  include_tasks: systemd_load.yml
  vars:
    _systemd_service_name: "{{ service.service_name | replace(' ', '_') }}"
    loop_label:
      service_name: "{{ _systemd_service_name }}"
  loop: "{{ systemd_services }}"
  loop_control:
    loop_var: service
    label: "{{ loop_label | to_json }}"
  args:
    apply:
      tags:
        - systemd-service
  tags:
    - systemd-service

- name: Load socket
  systemd:
    name: "{{ item.socket_name | replace(' ', '_') }}.socket"
    enabled: "{{ item.enabled | default(systemd_service_enabled) }}"
    state: "{{ item.state | default(omit) }}"
  loop: "{{ systemd_services | selectattr('sockets', 'defined') | map(attribute='sockets') | flatten(1) }}"
  loop_control:
    label: "{{ loop_label | to_json }}"
  vars:
    loop_label:
      name: "{{ item.socket_name | replace(' ', '_') }}.socket"
      enabled: "{{ item.enabled | default(systemd_service_enabled) }}"
      state: "{{ item.state | default(omit) }}"
  tags:
    - systemd-service