Exportar e Restaurar databases via mongoidShell

mongoid-shell-export

namespace :backup do
  [:development, :production].each do |env|
    namespace env do 
      desc 'Faz o dump de uma base informada como parametro'
      task :dump_database_collections => :environment do
        Mongoid.load! File.join(Rails.root, "config/mongoid.yml"), env

        database_name = ENV['db']

        dump_dir = File.join(ENV['output'], database_name)

        puts "Exportando database #{database_name} no diretório #{dump_dir}"

        mongodump = Mongoid::Shell::Commands::Mongodump.new(db: database_name, out: dump_dir)

        system mongodump.to_s

        puts "Finalizado com sucesso!"
      end

      desc 'Restaura a base de dados informada como parametro'
      task :restore_database_collections => :environment do
        Mongoid.load! File.join(Rails.root, "config/mongoid.yml"), env

        database_name = ENV['db']
        restore_dir   = ENV['path']

        puts "Restaurando database: #{database_name}"

        begin
          session = Moped::Session.new(["localhost:27017"])
          session.use database_name

          mongorestore = Mongoid::Shell::Commands::Mongorestore.new({session: session, restore: restore_dir })
          system mongorestore.to_s
        ensure
          session.disconnect
        end

        puts "Finalizado com sucesso!"
      end
    end
  end
end