---
# Copyright 2017, Logan Vig <logan2211@gmail.com>
#
# 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.

#create a sorted resolver list with affinity toward unbound container(s)
#on the same physical_host
- name: Apply resolver sorting
  set_fact:
    resolver_list: |-
      {% set _var = [] %}
      {% for host in groups[resolvconf_resolver_group] %}
      {%   if physical_host is defined and
              hostvars[host]['physical_host'] is defined
              and physical_host == hostvars[host]['physical_host'] %}
      {%     set _prio = 100 %}
      {%   else %}
      {%     set _prio = 50 %}
      {%   endif %}
      {%   set _ = _var.append({
             'host': hostvars[host]['ansible_host'],
             'priority': _prio
           })
      %}
      {% endfor %}
      {{ _var |
         sort(reverse=true, attribute='priority') |
         map(attribute='host') |
         list
      }}
  when:
    - physical_host is defined
    - physical_host in hostvars['localhost']['unbound_physical_hosts']

- name: Set resolver IP list fact
  set_fact:
    resolvconf_resolver_ips: "{{ resolver_list }}"
    resolvconf_options:
      - 'timeout:1'
  when:
    - resolver_list is defined
    - resolver_list | length > 0

#rotate is only used when no physical_host affinity is defined
- name: Set resolver rotate when physical_host is not an unbound host
  set_fact:
    resolvconf_options:
      - 'timeout:1'
      - 'rotate'
  when:
    - resolver_list is not defined

- name: Include the resolvconf role
  include_role:
    name: resolvconf