---
# 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: Install Journalbeat
  hosts: hosts
  become: true
  vars:
    haproxy_ssl: false

  vars_files:
    - vars/variables.yml

  environment: "{{ deployment_environment_variables | default({}) }}"

  pre_tasks:
    - include_tasks: common_task_install_go1.10.1.yml

    - name: Ensure libsystemd-dev is installed
      apt:
        name: "{{ item }}"
        state: "{{ elk_package_state | default('present') }}"
        update_cache: true
      with_items:
        - git
        - libsystemd-dev
      tags:
        - package_install

    - name: exit playbook after uninstall
      meta: end_play
      when:
        - elk_package_state | default('present') == 'absent'
        - ansible_service_mgr == "systemd"

  tasks:
    - 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"
        - "/var/log/journalbeat"
        - "/etc/journalbeat"

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

    - name: Drop journalbeat conf file
      template:
        src: "{{ item.src }}"
        dest: "{{ item.dest }}"
      with_items:
        - src: templates/journalbeat.yml.j2
          dest: /etc/journalbeat/journalbeat.yml

    - name: Run the systemd service role
      include_role:
        name: systemd_service
        private: true
      vars:
        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/journalbeat
            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

    - name: Enable and restart journalbeat
      systemd:
        name: "journalbeat"
        enabled: true
        state: restarted
        daemon_reload: yes


## NOTE(cloudnull): This task is broken at this point due to missing
##                  configuration. Once the following issue
##                  [ https://github.com/mheese/journalbeat/issues/136 ] is
##                  resolved this should be uncommented.
# - name: Load Journalbeat Dashboards
#   hosts: hosts[0]
#   become: true
#   vars_files:
#     - vars/variables.yml
#   tasks:
#     - name: Load templates
#       shell: >-
#         {% set IP_ARR=[] %}
#         {% for host in groups['elastic-logstash'] %}
#         {%   set _ = IP_ARR.insert(loop.index, ((hostvars[host]['ansible_host'] | string) + ":" + (elastic_port | string))) %}
#         {% endfor %}
#         /usr/local/bin/journalbeat -setup
#         -E 'output.logstash.enabled=false'
#         -E 'output.elasticsearch.hosts={{ IP_ARR | to_json }}'
#         -e -v
#       register: templates
#       until: templates is success
#       retries: 3
#       delay: 2
#   tags:
#     - beat-setup