---
- name: Install the required packages needed by the external varnish repo
  apt: pkg={{ item }} state=present
  with_items: varnish_repo_requirements
  when: varnish_repo
  tags: varnish

- name: Get the varnish repo key
  apt_key: url=https://repo.varnish-cache.org/GPG-key.txt state=present
  when: varnish_repo
  register: varnish_repo_list
  tags: varnish

- name: Define the varnish repository
  apt_repository: repo='deb {{ varnish_repo_url }}' state=present
  when: varnish_repo
  register: varnish_repo_list
  tags: varnish

- name: Update the apt cache if needed
  apt: update_cache=yes
  when: ( varnish_repo_list | changed )
  tags: varnish
  
- name: Install the varnish package
  apt: pkg={{ item }} state={{ varnish_pkg_state }}
  with_items: varnish_pkg_name
  tags: varnish

- name: Configure some kernel parameters via sysctl
  sysctl: name={{ item.name }} value={{ item.value }} sysctl_file=/etc/sysctl.d/{{ varnish_sysctl_file }} reload=yes state=present
  with_items: varnish_sysctl_kernel_parameters
  when: varnish_set_sysctl_params
  tags: [ 'varnish', 'varnishconf', 'sysctl' ]

- name: Install the varnish parameters file. The config file needs to be set by a local task
  template: src={{ item }}.j2 dest=/etc/default/varnish owner=root group=root mode=0444
  with_items:
    - varnish.params
  notify: Restart varnish
  tags: [ 'varnish', 'varnishconf' ]

- name: Install the varnish systemd unit in debian 8
  template: src={{ item }}.systemd.j2 dest=/etc/systemd/system/{{ item }} owner=root group=root mode=0444
  with_items:
    - varnish.service
  notify: Restart varnish
  when: is_debian8
  register: install_varnish_unit
  tags: [ 'varnish', 'varnishconf' ]

- name: Reload the systemd unit when changed
  command: systemctl daemon-reload
  when: ( install_varnish_unit | changed )
  tags: [ 'varnish', 'varnishconf' ]

- name: Ensure that the varnish service is started and enabled
  service: name=varnish state=started enabled=yes
  when: varnish_enabled
  tags: varnish

- name: Ensure that the varnish service is stopped and disabled
  service: name=varnish state=stopped enabled=no
  when: not varnish_enabled
  tags: varnish