---
- name: Install Metricsbeat
  hosts: all
  become: true
  vars:
    haproxy_ssl: false

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

  vars_files:
    - vars/variables.yml

  pre_tasks:
    - include_tasks: common_task_data_node_hosts.yml

  tasks:
    - include_tasks: common_task_install_elk_repo.yml

    - name: Ensure Metricsbeat is installed
      apt:
        name: metricbeat
        state: "{{ elk_package_state | default('present') }}"
        update_cache: true
      tags:
        - package_install

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

    - name: Check for apache
      stat:
        path: /etc/apache2/sites-available
      register: apache2

    - name: Check for ceph
      stat:
        path: /etc/ceph
      register: ceph

    - name: Check for haproxy
      stat:
        path: /etc/haproxy
      register: haproxy

    - name: Check for docker
      stat:
        path: /var/run/docker.sock
      register: docker

    - name: Check for httpd
      stat:
        path: /etc/httpd
      register: httpd

    - name: Check for memcached
      stat:
        path: /etc/memcached.conf
      register: memcached

    - name: Check for mysql
      stat:
        path: /var/lib/mysql
      register: mysql

    - name: Check for nginx
      stat:
        path: /etc/nginx/nginx.conf
      register: nginx

    - name: Check for rabbitmq
      stat:
        path: /var/lib/rabbitmq
      register: rabbitmq

    - name: Check for uwsgi
      stat:
        path: /etc/uwsgi
      register: uwsgi

    - name: Check for uwsgi stats sockets
      find:
        paths: /tmp
        file_type: any
        patterns: '*uwsgi-stats.sock'
      register: uwsgi_find_sockets

    - name: Set discovery facts
      set_fact:
        apache_enabled: "{{ (apache2.stat.exists | bool) or (httpd.stat.exists | bool) }}"
        ceph_enabled: "{{ ceph.stat.exists | bool }}"
        docker_enabled: "{{ docker.stat.exists | bool }}"
        haproxy_enabled: "{{ haproxy.stat.exists | bool }}"
        memcached_enabled: "{{ memcached.stat.exists | bool }}"
        mysql_enabled: "{{ mysql.stat.exists | bool }}"
        nginx_enabled: "{{ nginx.stat.exists | bool }}"
        rabbitmq_enabled: "{{ rabbitmq.stat.exists | bool }}"
        uwsgi_enabled: "{{ uwsgi.stat.exists | bool }}"
        uwsgi_sockets: "{{ uwsgi_find_sockets }}"

    # Apache 2 stats enablement
    - name: Drop apache2 stats site config
      template:
        src: apache-status.conf.j2
        dest: /etc/apache2/sites-available/apache-status.conf
      when: apache_enabled

    - name: Enable apache2 stats site
      file:
        src: /etc/apache2/sites-available/apache-status.conf
        dest: /etc/apache2/sites-enabled/apache-status.conf
        state: link
      when: apache_enabled

    - name: Ensure apache2 stats mode is enabled
      apache2_module:
        name: status
        state: present
      when: apache_enabled

    - name: Reload apache2
      service:
        name: apache2
        state: reloaded
      when: apache_enabled

    # NGINX stats enablement
    - name: Drop nginx stats site config
      template:
        src: nginx-status.conf.j2
        dest: /etc/nginx/sites-available/nginx-status.conf
      when: nginx_enabled

    - name: Enable nginx stats site
      file:
        src: /etc/nginx/sites-available/nginx-status.conf
        dest: /etc/nginx/sites-enabled/nginx-status.conf
        state: link
      when: nginx_enabled

    - name: Reload nginx
      service:
        name: nginx
        state: reloaded
      when: nginx_enabled

  post_tasks:
    - name: Drop metricbeat conf file
      template:
        src: templates/metricbeat.yml.j2
        dest: /etc/metricbeat/metricbeat.yml

    - name: Enable and restart metricbeat
      systemd:
        name: "metricbeat"
        enabled: true
        state: restarted


- name: Load Metricsbeat Dashboards
  hosts: all[0]
  become: true
  vars_files:
    - vars/variables.yml
  tasks:
    - name: Load templates
      shell: >-
        metricbeat setup
        {{ item }}
        -E 'output.logstash.enabled=false'
        -E 'output.elasticsearch.hosts={{ coordination_nodes | to_json }}'
        -e -v
      with_items:
        - "--template"
        - "--dashboards"
      register: templates
      until: templates is success
      retries: 3
      delay: 2
  tags:
    - beat-setup