#!/usr/bin/env ansible-playbook
---
#==============================================================#
# File      :   cache.yml
# Desc      :   make offline package cache from target nodes
# Ctime     :   2024-08-22
# Mtime     :   2024-08-22
# Path      :   cache.yml
# Author    :   Ruohang Feng ([email protected])
# License   :   AGPLv3
#==============================================================#

# the default dir for collecting offline package is dist/${version}
- name: CREATE LOCAL DIR
  become: no
  hosts: localhost
  gather_facts: no
  tags: cache_dir
  tasks:
    - name: create local directory
      file: path={{ cache_pkg_dir|default('dist/${version}') | replace('${version}', version|default('v3.0.1')) }} state=directory


# gather offline packages from target nodes (the infra node with repo enabled)
- name: MAKE OFFLINE PACKAGE
  hosts: all
  become: yes
  gather_facts: no
  vars:
    #version: v3.0.1
    #cache_pkg_dir: 'dist/${version}'  # where to store the cached package? dist/${version} by default
    #cache_pkg_name: 'pigsty-pkg-${version}.${os}.${arch}.tgz' # cache offline package filename pattern
    #cache_repo: pigsty                # target repo(s) to be cached, use `,` to separate multiple repos
    #cache_gf_plugin: false            # cache grafana plugins, overwriting existing tarball?
  roles:
    - { role: node_id       , tags: id       }  # get node identity (always)
    - { role: cache         , tags: cache    }  # make offline package


# the default dir for collecting offline package is dist/${version}
- name: CREATE LOCAL DIR
  become: no
  hosts: localhost
  gather_facts: no
  tags: cache_info
  tasks:

    - name: calculate cache tarball md5 checksum
      shell: |
        cd {{ cache_pkg_dir|default('dist/${version}') | replace('${version}', version|default('v3.0.1')) }}
        md5sum *.tgz > checksums
        cat checksums
        ls -lh *.tgz
      register: cache_md5

    - name: show cache tarball md5 checksum
      debug:
        msg: "{{ cache_md5.stdout_lines }}"


#---------------------------------------------------------------
# Usage
#---------------------------------------------------------------
# 1. make sure your nodes are already installed with pigsty!
# 2. make sure target nodes are the infra nodes with repo enabled!
#
#     cache.yml -l infra        # make offline package from the infra group
#     cache.yml -l 10.10.10.10  # make offline package from the ad hoc node
#
# The tarball will be generated @ /tmp/pkg.tgz, and copy to dist/${version}
#---------------------------------------------------------------
# Tasks
#---------------------------------------------------------------
# cache_dir     : create local dist dir for cache tarball
# id            : calculate node identity
# cache_id      : calculate cache tarball name
# cache_check   : check repo directories exists
# cache_plugin  : cache grafana plugins (optional)
# cache_create  : adjust and recreate local yum/apt repo
# cache_tgz     : make cache tarball from local repos
# cache_fetch   : fetch cache tarball from target nodes
# cache_info    : generate cache md5sum and print size
#---------------------------------------------------------------
...