Process::Daemon

Process::Daemon is a stable and helpful base class for long running tasks and daemons. Provides standard start, stop, restart, status operations.

Installation

Add this line to your application's Gemfile:

gem 'process-daemon'

And then execute:

$ bundle

Or install it yourself as:

$ gem install process-daemon

Usage

Create a file for your daemon, e.g. daemon.rb:

#!/usr/bin/env ruby

require 'process/daemon'

# Very simple XMLRPC daemon
class XMLRPCDaemon < Process::Daemon
    def base_directory
        # Should be an absolute path:
        File.join(__dir__, "tmp")
    end

    def startup
        puts "Starting server..."

        @rpc_server = WEBrick::HTTPServer.new(
            :Port => 31337,
            :BindAddress => "0.0.0.0"
        )

        @listener = XMLRPC::WEBrickServlet.new

        @listener.add_handler("fourty-two") do |amount|
            "Hello World"
        end

        @rpc_server.mount("/RPC2", @listener)

        begin
            @rpc_server.start
        rescue Interrupt
            puts "Daemon interrupted..."
        ensure
            @rpc_server.shutdown
        end
    end

    def shutdown
        puts "Stopping the RPC server..."
        @rpc_server.stop
    end
end

XMLRPCDaemon.daemonize

Then run daemon.rb start. To stop the daemon, run daemon.rb stop.

Contributing

1. Fork it
2. Create your feature branch (git checkout -b my-new-feature)
3. Commit your changes (git commit -am 'Add some feature')
4. Push to the branch (git push origin my-new-feature)
5. Create new Pull Request