aspect4r - Aspect Oriented Programming for Ruby
I am releasing my first gem - aspect4r. It allows one to extract common logic from multiple methods using before_method/after_method/around_method etc. It also provides a approach to split large methods into small pieces. I hope you guys find it useful. It might undergo some API changes before 1.0 after I put it in use in one of my projects. I’ll also be doing some benchmark testing next and improving its internals.
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There is a good bit more to AOP then just wrappers. To that end you might be interested in http://github.com/rubyworks/cuts/blob/master/RCR.textile.
Even so, just for wrappers, also check out http://github.com/rubyworks/mixers/blob/master/lib/mixers/advisable.rb
Thank you for the information. I’ll see if I can borrow something from them.
IMHO, even though AOP means a lot more than method wrappers, Ruby’s programming model and its meta-programming support make it trivial to do other parts of AOP. An easy-to-use method wrapper can be the missing piece of AOP support in ruby.
For example, below code adds logging aspect to do_* of SomeController.
module LoggingAspect include Aspect4rbefore_method(instance_methods.select{|m| m=~ /do_/}) do # log request parameters end end
SomeController.send(:include, LoggingAspect) </code>
Fully agree. Ruby’s meta-programming capabilities do go along way in this regard.
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