---
# Copyright 2020, Springer Nature.
#
# 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.

# This playbook is typically used with the following ansible-playbook
# arguments:
# * `-e hostname=<host>`
# * `-e backend_state=<enabled|disabled>`
# in order to globally enable/disable a controller at the HAProxy level.

- name: Set HAProxy backends state
  hosts: haproxy
  vars:
    - hostname: ""
    - backend_state: enabled
  tasks:
    - name: List HAProxy backends to process
      ansible.builtin.shell: echo show servers state | nc -U /var/run/haproxy.stat | awk '{print $4}' | grep '^{{ hostname }}' | sort | uniq
      register: backends
      changed_when: false
    - name: Loop through backends to set state
      community.general.haproxy:
        host: "{{ item }}"
        state: "{{ backend_state }}"
        socket: /var/run/haproxy.stat
        drain: "{{ haproxy_drain | default(False) }}"
        shutdown_sessions: "False"
        wait: "True"
        wait_interval: "{{ haproxy_wait_interval | default(5) }}"
        wait_retries: "{{ haproxy_wait_retries | default(24) }}"
      with_items: "{{ backends.stdout_lines }}"