---
# Copyright 2018, Rackspace US, Inc.
#
# 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.

- name: Gather variables for each operating system
  include_vars: "{{ item }}"
  with_first_found:
    - "{{ ansible_distribution | lower }}-{{ ansible_distribution_version | lower }}.yml"
    - "{{ ansible_distribution | lower }}-{{ ansible_distribution_major_version | lower }}.yml"
    - "{{ ansible_os_family | lower }}-{{ ansible_distribution_major_version | lower }}.yml"
    - "{{ ansible_distribution | lower }}.yml"
    - "{{ ansible_os_family | lower }}-{{ ansible_distribution_version.split('.')[0] }}.yml"
    - "{{ ansible_os_family | lower }}.yml"
  tags:
    - always

- name: Set elasticsearch variables
  include_vars: "vars_{{ ((inventory_hostname in (groups['kibana'] | default([])) and not inventory_hostname in (groups['elastic']) | default([]))) | ternary('kibana', 'default') }}.yml"
  tags:
    - always

- name: Ensure elasticsearch is installed
  package:
    name: "{{ elasticsearch_distro_packages }}"
    state: "{{ elk_package_state | default('present') }}"
    update_cache: "{{ (ansible_pkg_mgr == 'apt') | ternary('yes', omit) }}"
  register: _package_task
  until: _package_task is success
  retries: 3
  delay: 2
  notify:
    - Enable and restart elasticsearch
  tags:
    - package_install

- name: Create elasticsearch systemd service config dir
  file:
    path: "/etc/systemd/system/elasticsearch.service.d"
    state: "directory"
    group: "root"
    owner: "root"
    mode: "0755"

- name: Apply systemd options
  template:
    src: "{{ item.src }}"
    dest: "{{ item.dest }}"
  with_items:
    - src: "systemd.elasticsearch-overrides.conf.j2"
      dest: "/etc/systemd/system/elasticsearch.service.d/elasticsearch-overrides.conf"
  notify:
    - Enable and restart elasticsearch
  tags:
    - config

- name: Set sysconfig service defaults
  lineinfile:
    path: "{{ elasticsearch_sysconfig_path }}"
    regexp: '^{{ item.key }}='
    line: '{{ item.key }}={{ item.value }}'
  with_items:
    - key: MAX_OPEN_FILES
      value: 65536
    - key: MAX_LOCKED_MEMORY
      value: unlimited
    - key: MAX_MAP_COUNT
      value: 524288

- name: Set service specific haap size
  set_fact:
    _service_heap_size: "{{ elastic_heap_size }}"
  when:
    - elastic_heap_size is defined

- name: Drop jvm conf file(s)
  template:
    src: "{{ item.src }}"
    dest: "{{ item.dest }}"
  with_items:
    - src: "jvm.options.j2"
      dest: "/etc/elasticsearch/jvm.options"
  notify:
    - Enable and restart elasticsearch

- name: Drop elasticsearch conf file
  template:
    src: "{{ item.src }}"
    dest: "{{ item.dest }}"
  with_items:
    - src: "elasticsearch.yml.j2"
      dest: "/etc/elasticsearch/elasticsearch.yml"
    - src: "es-log4j2.properties.j2"
      dest: "/etc/elasticsearch/log4j2.properties"
  notify:
    - Enable and restart elasticsearch
  tags:
    - config

- name: Ensure elasticsearch ownership
  file:
    path: "/var/lib/elasticsearch/"
    owner: elasticsearch
    group: elasticsearch
    recurse: true
  register: e_perms
  until: e_perms is success
  retries: 3
  delay: 1
  tags:
    - config

- name: Ensure elasticsearch tmp dir
  file:
    path: "/var/lib/elasticsearch/tmp"
    state: directory
    owner: "elasticsearch"
    group: "elasticsearch"
    mode: "0750"

- include_tasks: "elasticsearch_nfs_setup.yml"
  when:
    - elastic_shared_fs_repos is defined
    - (elastic_shared_fs_repos | json_query(nfs_query)) | length > 0

- include_tasks: "elasticsearch_plugins.yml"