Process::Daemon

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

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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 working_directory
        File.expand_path("../tmp", __FILE__)
    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

License

Released under the MIT license.

Copyright, 2014, by Samuel G. D. Williams.

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.