---
# Copyright 2022, BBC R&D.
#
# 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.

# NOTE: When first establishing a peer relationship, a reverse DNS lookup happens which can cause a
#       peer's active hostname not to match the one stored on disk. Restarting the service resolves
#       this and prevents failures upon calls to create volumes.
- name: Find existing peers' runtime hostnames
  ansible.builtin.shell: "gluster peer status | grep Hostname: | cut -d ' ' -f 2"
  changed_when: false
  register: _existing_peer_hostnames
  when: (glusterfs_server_cluster_members | length) > 1

- name: Restart glusterfs server
  ansible.builtin.service:
    name: "{{ glusterfs_server_service }}"
    state: restarted
  when:
    - _existing_peer_hostnames is not skipped
    - ((_existing_peer_hostnames.stdout_lines | intersect(glusterfs_server_cluster_members)) | length) != (_existing_peer_hostnames.stdout_lines | length)

# Retry as the service may have just restarted
- name: Create gluster volume
  vars:
    num_cluster_members: "{{ glusterfs_server_cluster_members | length }}"
    cluster_has_replicas: "{{ (glusterfs_server_cluster_members | length) > 1 }}"
  gluster.gluster.gluster_volume:
    state: present
    name: "{{ glusterfs_server_volume_name }}"
    bricks: "{{ glusterfs_server_bricks }}"
    replicas: "{{ cluster_has_replicas | ternary(num_cluster_members, omit) }}"
    cluster: "{{ glusterfs_server_cluster_members | map('regex_replace', '_', '-') | list }}"
    force: true
  register: _volume_create
  delay: 1
  retries: 5
  until: _volume_create is success