ansible/roles/go/tasks/main.yaml

---
- name: gather architecture specific variables
  include_vars: "{{ lookup('first_found', possible_files) }}"
  vars:
    possible_files:
      files:
        - "{{ ansible_userspace_architecture }}.yaml"
        - "default.yaml"
      paths:
        - vars

- name: determine if go exists
  stat:
    path: /usr/local/go/bin/go
  register: st

- name: determine go version
  command: /usr/local/go/bin/go version
  register: gv
  changed_when: false
  when: st.stat.exists is defined and st.stat.exists

- name: gather os specific variables
  include_vars: "{{ lookup('first_found', possible_files) }}"
  vars:
    possible_files:
      files:
        - "{{ ansible_distribution }}-{{ ansible_distribution_version }}.yaml"
        - "{{ ansible_distribution }}.yaml"
        - "{{ ansible_os_family }}.yaml"
        - "default.yaml"
      paths:
        - vars

- name: download go
  get_url:
    url: "{{ go_url }}"
    checksum: "{{ go_checksum }}"
    dest: "/usr/local/src/go{{ go_version }}.{{ ansible_system | lower }}-{{ go_arch }}.tar.gz"
    owner: root
    group: root
    mode: 0644

- name: remove old version of go
  file:
    path: /usr/local/go
    state: absent
  when: st.stat.exists and gv.stdout != go_version_str

- name: unpack go
  unarchive:
    src: "/usr/local/src/go{{ go_version }}.{{ ansible_system | lower }}-{{ go_arch }}.tar.gz"
    dest: /usr/local
    remote_src: yes
  when:
    - (st.stat.exists is defined and not st.stat.exists) or gv.stdout != go_version_str

- name: environment
  copy:
    dest: /etc/profile.d/go.sh
    owner: root
    group: root
    mode: 0755
    content: | 
      PATH=$HOME/go/bin:$PATH:/usr/local/go/bin
      GOPATH=$HOME/go