A Database Backup module for MongoId in Rails

db_backup.rb

require 'slack'

##################################################################
#      This module take cares of Database backups                #
#                                                                #
# Note: please add and configure slack lib which you get in my   #
# gist list to enable slack configration                         #
##################################################################

module DbBackup
  mattr_reader :directory_name do 'db_backups' end
  mattr_accessor :name

  def self.generate_name(name="backup")
    self.name = "#{name}-#{Time.now.strftime("%Y-%m-%dT%H-%M-%S")}"
  end

  def self.compress(cmd)
    Dir.chdir() {
      FileUtils.mkdir_p(directory_name) unless File.directory?(directory_name)
      Dir.chdir(directory_name) {
        %x[#{cmd}]
        compressed_file_name = generate_name + '.tar.gz'
        cmd = 'tar -zcvf ' + compressed_file_name +' ' + "dump"
        %x[#{cmd}]
        %x[rm -r dump]
        if File.exists?(compressed_file_name)
          Slack.notify(message: "DbBackup: Successfully generated backup for #{Rails.env} locate file name #{compressed_file_name}")
        else
          Slack.notify(message: "DbBackup: Some thing went wrong #{Rails.env}", status: :error)
        end
      }
    }
  end

  module MongoDb
    def self.backup
      Slack.notify(message: "DbBackup: Started Backup #{Rails.env}", status: :info)
      config = Mongoid::Config.clients[:default]
      host = config[:host]
      database = config[:database]
      username = config[:username]
      password = config[:password]
      host = "localhost" if !host.present?
      cmd = "mongodump"
      cmd << " -h #{host}" if host.present?
      cmd << " -d #{database}" if database.present?
      cmd << " -u #{username}" if username.present?
      cmd << " -p #{password}" if password.present?
      self.parent.compress(cmd)
    end
  end
end