---
# Copyright 2018, 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: Gather variables for each operating system
  include_vars: "{{ item }}"
  with_first_found:
    - "{{ ansible_distribution | lower }}-{{ ansible_distribution_version | lower }}.yml"
    - "{{ ansible_distribution | lower }}-{{ ansible_distribution_major_version | lower }}.yml"
    - "{{ ansible_os_family | lower }}-{{ ansible_distribution_major_version | lower }}.yml"
    - "{{ ansible_distribution | lower }}.yml"
    - "{{ ansible_os_family | lower }}-{{ ansible_distribution_version.split('.')[0] }}.yml"
    - "{{ ansible_os_family | lower }}.yml"
  tags:
    - always

- name: Ensure beat is installed
  package:
    name: "{{ journalbeat_distro_packages }}"
    state: "{{ elk_package_state | default('present') }}"
    update_cache: "{{ (ansible_pkg_mgr == 'apt') | ternary('yes', omit) }}"
  register: _package_task
  until: _package_task is success
  retries: 3
  delay: 2
  notify:
    - Enable and restart journalbeat
  tags:
    - package_install

- name: create the system group
  group:
    name: "journalbeat"
    state: "present"
    system: "yes"

- name: Create the journalbeat user
  user:
    name: "journalbeat"
    group: "journalbeat"
    comment: "journalbeat user"
    shell: "/bin/false"
    createhome: "yes"
    home: "/usr/share/journalbeat"

- name: Create journalbeat data path
  file:
    path: "{{ item }}"
    state: directory
    owner: "journalbeat"
    group: "journalbeat"
    mode: "0755"
  with_items:
    - "/usr/share/journalbeat"
    - "/var/lib/journalbeat"
    - "/etc/journalbeat"

- name: Install journalbeat
  shell: /opt/go1.10.1/go/bin/go get -v github.com/mheese/journalbeat
  args:
    creates: /usr/local/bin/journalbeat
  environment:
    PATH: "{{ ansible_env.PATH }}:/opt/go1.10.1/go/bin"
    GOPATH: /usr/local
  notify:
    - Enable and restart journalbeat

- name: Create journalbeat systemd service config dir
  file:
    path: "/etc/systemd/system/journalbeat.service.d"
    state: "directory"
    group: "root"
    owner: "root"
    mode: "0755"

- name: Apply systemd options
  template:
    src: "{{ item.src }}"
    dest: "{{ item.dest }}"
    mode: "0644"
  with_items:
    - src: "systemd.general-overrides.conf.j2"
      dest: "/etc/systemd/system/journalbeat.service.d/journalbeat-overrides.conf"
  notify:
    - Enable and restart journalbeat

- name: Drop journalbeat conf files
  template:
    src: "{{ item.src }}"
    dest: "{{ item.dest }}"
    mode: "0644"
  with_items:
    - src: "journalbeat.yml.j2"
      dest: "/etc/journalbeat/journalbeat.yml"
  notify:
    - Enable and restart journalbeat

- name: Run the systemd service role
  include_role:
    name: systemd_service
    private: true
  vars:
    systemd_service_enabled: "{{ ((elk_package_state | default('present')) != 'absent') | ternary(true, false) }}"
    systemd_service_restart_changed: false
    systemd_services:
      - service_name: "journalbeat"
        execstarts:
          - /usr/local/bin/journalbeat
            -c /etc/journalbeat/journalbeat.yml
            -path.home /usr/share/journalbeat
            -path.config /etc/journalbeat
            -path.data /var/lib/journalbeat
            -path.logs /var/log/beats
        config_overrides:
          Service:
            EnvironmentFile: "-/etc/default/go1.10.1"
          Unit:
            Documentation: https://github.com/mheese/journalbeat/blob/master/README.md
            Wants: network-online.target
            After: network-online.target

- include_tasks: journalbeat_setup.yml
  tags:
    - setup

- name: Force beat handlers
  meta: flush_handlers

- name: set journalbeat service state (upstart)
  service:
    name: "journalbeat"
    state: "{{ journalbeat_service_state }}"
    enabled: "{{ journalbeat_service_state in ['running', 'started', 'restarted'] }}"
  when:
    - ansible_service_mgr == 'upstart'
    - journalbeat_service_state in ['started', 'stopped']

- name: set journalbeat service state (systemd)
  systemd:
    name: "journalbeat"
    state: "{{ journalbeat_service_state }}"
    enabled: "{{ journalbeat_service_state in ['running', 'started', 'restarted'] }}"
  when:
    - ansible_service_mgr == 'systemd'
    - journalbeat_service_state in ['started', 'stopped']