Abstracting Services in Ruby

• Kurt Stephens
• 2010/08/19
• Slides — http://kurtstephens.com/pub/abstracting_services_in_ruby/asir.slides/
• Code — http://kurtstephens.com/pub/abstracting_services_in_ruby/
• Git — http://github.com/kstephens/abstractiing_services_in_ruby

Objectives

• Simplify service/client definitions.
• Anticipate new encoding, delivery and security requirements.
• Separate request/response encoding and delivery for composition.
• Elide deployment decisions.
• Integrate diagnostics and logging.
• Simplify integration testing.

Features

• One-way and two-way requests as Module or instance methods.
• Request support:
  • Delayed requests.
  • Request meta-data: UUID, Timestamp.
• Support for multiple request/response transports:
  • File.
  • Named Pipe.
  • TCP.
  • HTTP under WEBrick or as Rack application.
  • Beanstalkd.
  • ZeroMQ.
  • Resque.
  • Buffered transports.
  • Broadcast transports.
  • Fallback transports.
  • Time-decaying retry and polling logic.
• Support for multiple encodings:
  • Marshal.
  • XML.
  • JSON.
  • YAML.
  • Base64.
  • ZLib.
  • Chained encodings.
  • Signed payloads.

Platform support

• CRuby 1.8.7
• CRuby 1.9.3-head
• CRuby 2.0-head
• JRuby 1.6.x (with JRUBY_OPTS=—1.9) IN-PROGRESS

Dependencies

• gem install zmq
  • zmq 2.1.4 needs a zmq 2.x library.
  • On OS X Macports: sudo port install zmq22.