RBridge 0.2

Posted by Chuck Vose Sat, 24 May 2008 07:12:00 GMT

RBridge has undergone a lot of bug fixes and I think it’s worthy of a 0.2 release at long last.

1 major enhancement

  • Actually runs headless via the rulang command.

3 minor enhancements

  • Uses optparse for clearer command-line options.
  • Option to specify port, compile directory, mnesia directory, sname, and location of server file.
  • Some error checking, and debug output added. Checks to see if server is already running on specified port.

You can check it out here or just gem install rbridge

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RBridge-0.1.2 Announcement

Posted by Chuck Vose Mon, 10 Mar 2008 21:20:00 GMT

Just wanted to poke my head in and let people know that a new version of rbridge has been released. New to this revision is a few little tweaks and bug fixes but the main point is that you can install the gem and just type ‘rulang’ from anywhere to start the erlang server. This enabled us to build a little test suite which should improve quality.

Also, the end of quarter summary has been posted per our class requirements: Review

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Concurrent code in Ruby 1.8.6 through inlining

Posted by Chuck Vose Mon, 07 Jan 2008 19:11:00 GMT

Slight typo in the code fixed: 2008-01-08

Toshiyuki and I have released a new gem called rbridge which allows us to execute functional, side-effect free, concurrent code directly in Ruby regardless of the version by using Erlang as a processor. This includes using the Mnesia distributed database and ETS/DETS.

To try it out please follow these steps:

1. Download Erlang for your os. Windows has binaries and OS X can be configured with `./configure—prefix=/opt/local` to make MacParts happy. I haven’t yet tried it with Linux but the default configure options should be okay.

2. Download the rbridge gem. `sudo gem install rbridge`

3. Start the rulang server in Erlang on port 9900. Change dir to the gem directory which is usually /usr/local/lib/ruby/gems/1.8/gems/rbridge-0.1/lib and run sudo erlc rulang.erl. Enter the Erlang shell by typing erl. Finally, start the server with rulang:start_server(9900). (There’s a dot at the end of the command).

4. Require rubygems and rbridge in your code and create a new connection to the rulang server. This is the simplest bit of inline code I can think of but there is a lot more we can do: asynchronous access and ruby-style syntax specifically.

require 'rubygems'
require 'rbridge'

@r = RBridge.new(nil, 'localhost', 9900)

puts @r.erl('10*10.')

To read more check out the documentation on ruby-mnesia.rubyforge.org.

Aside: Toshiyuki Hirooka found me. Thank you to everyone that helped search and offered to translate for us. I’m constantly impressed by the support from the Ruby community.

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