setup-wal-g.yml

- name: Create wal-g group
  group:
    name: wal-g
    state: present
  when: nixpkg_mode

- name: Create wal-g user
  user:
    name: wal-g
    shell: /bin/false
    comment: WAL-G user
    group: wal-g
    groups: wal-g, postgres
  when: nixpkg_mode
- name: Create a config directory owned by wal-g
  file:
    path: /etc/wal-g
    state: directory
    owner: wal-g
    group: wal-g
    mode: '0770'
  when: nixpkg_mode

- name: Install wal-g 2 from nix binary cache
  become: yes
  shell: |
    sudo -u wal-g bash -c ". /nix/var/nix/profiles/default/etc/profile.d/nix-daemon.sh && nix profile install github:supabase/postgres/{{ git_commit_sha }}#wal-g-2"
  when: stage2_nix

- name: Install wal-g 3 from nix binary cache
  become: yes
  shell: |
    sudo -u wal-g bash -c ". /nix/var/nix/profiles/default/etc/profile.d/nix-daemon.sh && nix profile install github:supabase/postgres/{{ git_commit_sha }}#wal-g-3"
  when: stage2_nix

- name: Create symlink for wal-g-3 from Nix profile to /usr/local/bin
  ansible.builtin.file:
    src: /home/wal-g/.nix-profile/bin/wal-g-3
    dest: /usr/local/bin/wal-g-v3
    state: link
    force: yes  # This will replace existing file/symlink if it exists
  become: yes   # Need sudo to write to /usr/local/bin
  when: stage2_nix

- name: Create symlink to make wal-g-v2 the default wal-g
  ansible.builtin.file:
    src: /home/wal-g/.nix-profile/bin/wal-g-2
    dest: /usr/local/bin/wal-g
    state: link
    force: yes
  become: yes
  when: stage2_nix

- name: Create /etc/wal-g/config.json
  file:
    path: /etc/wal-g/config.json
    state: touch
    owner: wal-g
    group: wal-g
    mode: '0664'

- name: Move custom wal-g.conf file to /etc/postgresql-custom/wal-g.conf
  template:
    src: "files/postgresql_config/custom_walg.conf.j2"
    dest: /etc/postgresql-custom/wal-g.conf
    mode: 0664
    owner: postgres
    group: postgres

- name: Add script to be run for restore_command
  template:
    src: "files/walg_helper_scripts/wal_fetch.sh"
    dest: /home/postgres/wal_fetch.sh
    mode: 0500
    owner: postgres
    group: postgres

- name: Add helper script for wal_fetch.sh
  template:
    src: "files/walg_helper_scripts/wal_change_ownership.sh"
    dest: /root/wal_change_ownership.sh
    mode: 0700
    owner: root

- name: Include /etc/postgresql-custom/wal-g.conf in postgresql.conf
  become: yes
  replace:
    path: /etc/postgresql/postgresql.conf
    regexp: "#include = '/etc/postgresql-custom/wal-g.conf'"
    replace: "include = '/etc/postgresql-custom/wal-g.conf'"
  when: stage2_nix