- name: Setup Prometheus User
  user:
    name: "{{prometheus_user}}"
    home: "{{prometheus_home_dir}}"
    state: present
- name: Get User home directory
  shell: "awk -F: '{if($1==\"{{prometheus_user}}\"){print $6}}' /etc/passwd"
  changed_when: false
  register: get_home_command_output
- set_fact: "prometheus_user_home={{get_home_command_output['stdout']}}"
- set_fact: "prometheus_dir=prometheus-{{prometheus_version}}.{{prometheus_os}}-{{prometheus_architecture}}"
- name: Create configuration directory
  file:
    state: directory
    dest: "{{prometheus_user_home}}/conf"
    mode: '0700'
    owner: "{{prometheus_user}}"
- name: Create Data directory
  file:
    state: directory
    dest: "{{prometheus_data_dir}}"
    mode: '0700'
    owner: "{{prometheus_user}}"
- name: Download Prometheus
  get_url:
    url: "{{prometheus_url}}"
    dest: "{{prometheus_user_home}}/prometheus-{{prometheus_version}}.tgz"
    mode: '0600'
    owner: "{{prometheus_user}}"
# There's a bug  in become_user that doesn't set permissions on the temp directory
# which is asinine when my user has sudo persmissions.
- name: Extract Prometheus
  shell: |
    if ! [ -e "{{prometheus_user_home}}/{{prometheus_dir}}" ] ; then
      sudo su - '{{prometheus_user}}' -c 'tar xzf prometheus-{{prometheus_version}}.tgz'
    fi
  changed_when: false
- name: Link prometheus directory
  file:
    state: link
    src: '{{prometheus_dir}}'
    dest: '{{prometheus_user_home}}/prometheus'
    force: yes
- name: Link configuration files
  file:
    state: link
    src: '../conf/{{item}}'
    dest: '{{prometheus_user_home}}/prometheus/{{item}}'
    force: yes
  loop:
    - prometheus.yml
- name: Write prometheus template
  template:
    src: prometheus/prometheus.yml
    dest: '{{prometheus_user_home}}/conf/prometheus.yml'
    owner: '{{prometheus_user}}'
    mode: '0600'