tiny_daemon

• It daemonizes a Ruby block and supports graceful exiting.
• It only supports and guarantee running only one process at any moment

Please include this into your Gemfile:

gem 'tiny_daemon'

p = TinyDaemon.new("test_process", "pids", "log")

p.stop # Allow only one instance to run at any moment

p.exit do
  is_running = false
  puts "The process #{Process.pid} is being killed gracefully "
end

p.start do
  while is_running
    puts "Test"
    sleep(1)
  end

  puts "The process #{Process.pid} exited gracefully"
end

There will be a pid file at pids/test_process.pid. The log file will be at log/test_process.log.

We can issue kill [pid] in order to exit the process gracefully. Please note that using kill -9 [pid] will terminate the process immediately.

1. Install all dependencies: bundle install
2. Run the example: bundle exec ruby tests/example.rb

It can be used with a Rake task and, ultimately, use with Capistrano comfortably:

namespace :daemon do
  task :start => :environment do
    is_running = true

    d = TinyDaemon.new("some_task", "tmp/pids", "log")
    d.stop
    d.exit { is_running = false }
    d.start do
      while is_running
        puts "Test"
        sleep(0.1)
      end
    end
  end

  task :stop => :environment do
    TinyDaemon.new("some_task", "tmp/pids", "log").stop
  end
end

• = Ruby 2.0

• *nix platform

1. Install all dependencies: bundle install
2. Run all tests: bundle exec rake test
3. Start developing

Tanin Na Nakorn

Do What The Fuck You Want To Public License (http://sam.zoy.org/wtfpl/)

"You just DO WHAT THE FUCK YOU WANT TO."