---
# (c) 2021, Satish Patel <satish.txt@gmail.com>
#
# Copyright
#
# 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.

# checking if ovn db are clustered or not, if not then this is fresh node.
- name: Check if ovn db is clustered
  command: ovsdb-tool db-is-clustered /var/lib/ovn/ovnnb_db.db
  ignore_errors: true
  failed_when: false
  register: _check_cluster_db
  tags:
    - skip_ansible_lint

# We need to clean existing ovn db/lock file before cluster join.
- name: Clean up db/lock files before creating ovn cluster
  when:
    - _check_cluster_db.rc != 0
  block:
    - name: Stop ovn services
      service:
        name: "{{ item }}"
        state: stopped
      with_items:
        - ovn-northd
        - ovn-central

    - name: Clean up ovn db directory
      file:
        path: /var/lib/ovn/
        state: absent

# We are finding leader node so new nodes use leader to join cluster.
- name: Find leader node in ovn cluster
  shell: ovs-appctl -t /var/run/ovn/ovnnb_db.ctl cluster/status OVN_Northbound | sed 's/ //g' | grep -oP '(?<=Role:).*'
  args:
    executable: /bin/bash
  ignore_errors: true
  delegate_to: "{{ item }}"
  with_items: "{{ groups['neutron_ovn_northd'] }}"
  run_once: true
  failed_when: false
  register: _find_leader
  tags:
    - skip_ansible_lint

# set leader_node variable
- name: Set leader_node fact
  set_fact:
    leader_node: "{{ (_find_leader.results | selectattr('stdout', 'search', 'leader')) | map(attribute='item') | list  }}"

# This play only run first time to build cluster using primary node.
- name: Setup ovn cluster using primary node.
  template:
    src: ovn-central.j2
    dest: "/etc/default/ovn-central"
  when:
    - "inventory_hostname == neutron_ovn_primary_cluster_node"
    - _check_cluster_db.rc != 0
    - not leader_node
  notify:
    - start ovn-central service
    - restart ovn-central service

# This play will add nodes in existing cluster using leader_node var.
- name: Join new nodes to ovn cluster using leader node
  template:
    src: ovn-central.j2
    dest: "/etc/default/ovn-central"
  when:
    - _check_cluster_db.rc != 0
  notify:
    - start ovn-central service
    - restart ovn-central service