---
#
# Install/run elasticsearch for browbeat
#

- name: Copy elasticsearch yum repo file
  copy:
    src=elasticsearch.repo
    dest=/etc/yum.repos.d/elasticsearch.repo
    owner=root
    group=root
    mode=0644
  become: true

- name: Install elasticsearch and openjdk
  yum: name={{ item }} state=present
  become: true
  with_items:
    - elasticsearch
    - java-openjdk-headless

- name: Check if system memory is greater than 64G
  debug: msg="System memory is {{ansible_memory_mb.real.total | int}} so setting heapsize to 32G upper limit"
  when: ansible_memory_mb.real.total|int >= 65536

- name: Apply heapsize tuning for systems with greater than 64G memory
  lineinfile: dest=/usr/share/elasticsearch/bin/elasticsearch.in.sh \
          line="ES_HEAP_SIZE=32g" insertafter="^ES_CLASSPATH="
  when: ansible_memory_mb.real.total|int >= 65536
  register: elasticsearch_updated

- name: Print extended documentation for heapsize tuning
  debug: msg="Refer to https://www.elastic.co/guide/en/elasticsearch/guide/current/_limiting_memory_usage.html"
  when: ansible_memory_mb.real.total|int >= 65536

- name: Update elasticsearch startup with heap size
  become: true
  lineinfile: dest=/usr/share/elasticsearch/bin/elasticsearch.in.sh \
          line="ES_HEAP_SIZE={{ (ansible_memory_mb.real.total / 2) | int }}m" insertafter="^ES_CLASSPATH="
  when: ansible_memory_mb.real.total|int < 65536
  register: elasticsearch_updated

- name: Start elasticsearch service
  command: systemctl start elasticsearch.service
  ignore_errors: true
  when: elasticsearch_updated != 0

- name: Setup elasticsearch service
  service: name=elasticsearch state=started enabled=true
  become: true