BackupOrganizer

This gem helps you to keep your backups organized and to let the density of kept files to fade out over time.

The rules of how you want your backups organized are described in a Pattern like this:

Installation

Add this line to your application's Gemfile:

gem 'backup_organizer'

And then execute:

$ bundle

Or install it yourself as:

$ gem install backup_organizer

Usage

Scenario

• You are doing daily backups.
• The goal is to have a script that you can run daily and that ensures, that
  • all the backups of the last 30 days are kept
  • one file per month for the last year is kept
  • one file per year is kept forever
  • all other files are deleted

Solution

How it looks like

# Load ActiveSupport to make date wrangling a bit more convenient
require 'rubygems'
require 'active_support/core_ext'

# Define the pattern
BackupOrganizer.organize('/basepath/to/your/backups') do |files|
  files.stored_in('daily').if {|file| file.age < 30.days}

  files.stored_in('monthly').if do |file|
    file.age < 1.year && 
    file.most_recent_in_its_month?
  end

  files.stored_in('yearly').if {|file| file.most_recent_in_its_year?}
end

What it does

Given that pattern you should drop all your backups in /basepath/to/your/backups/daily. The organizer then does the following:

1. Move all files in /basepath/to/your/backups/daily which

   • are not created in the current month

   to /basepath/to/your/backups/monthly

2. Move all files in /basepath/to/your/backups/monthly which

   • are not created in the current year
   • are among all the files created in the same month not most recent file

   to /basepath/to/your/backups/yearly

3. Delete (as this is the last rule) all files in /basepath/to/your/backups/monthly which

   • are among all the files created in the same year not the most recent file

What else?

If you run the script make sure at least the /basepath/to/your/backups directory exists, the BackupOrganizer will take care of getting everything else in place.