toy example of git-backended KVS

grit-kvs.rb

#!/usr/bin/env ruby

require 'grit'

class Database
  def initialize(path)
    @repository = Grit::Repo.new(path)
  end

  def find(key)
    blob = @repository.tree / key
    return nil unless blob
    blob.data
  end

  def update(key, value, commit_message)
    file_path = File.join(@repository.working_dir, key)
    File.write(file_path, value)
    Dir.chdir(@repository.working_dir) do
      @repository.add key
    end
    @repository.commit_index commit_message
  end

  def delete(key, commit_message)
    @repository.remove key
    @repository.commit_index commit_message
  end
end

if $0 == __FILE__
  db = Database.new('myrepos')

  p db.find('time')
  db.update('time', Time.now.to_s, 'update time')
  p db.find('time')
end