tasks/main.yml

---
# tasks file for apigee-opdk-enable-swap
- block:

  - name: Allocate swap file
    command: creates={{ swap_path }} /bin/dd if=/dev/zero of={{ swap_path }} bs=1M count={{ swap_size_mb }}
    register: swap_allocate

  - name: Set swap file permissions
    file: dest={{ swap_path }} owner=root group=root mode=0600
    when: swap_allocate | changed


  - name: Determine whether swap file must be initialized
    command: file {{ swap_path }}
    register: file_type
    changed_when: false
    when: swap_allocate | changed

  - name: Initialize swap file
    command: mkswap {{ swap_path }}
    when: swap_allocate | changed and file_type.stdout.count('swap file') == 0

  - name: Add swap to fstab
    mount: src={{ swap_path }} name=none fstype=swap opts=sw passno=0 dump=0 state=present
    when: swap_allocate | changed

  - name: Determine whether swap file must be activated
    command: swapon -s
    register: active_swaps
    changed_when: false
    when: swap_allocate | changed

  - name: Activate swap
    command: swapon {{ swap_path}}
    when: swap_allocate | changed and active_swaps.stdout.count('{{ swap_path }}') == 0

  become: yes
  become_user: root