This fork is available as a gem under the name 'reretryable'.

Runs a code block, and retries it when an exception occurs. It's great when working with flakey webservices (for example).

It's configured using four optional parameters :tries, :on, :matching and :sleep, and runs the passed block. Should an exception occur, it'll retry for (tries-1) times.

Should the number of retries be reached without success, the last exception will be raised.

Open an URL, retry up to two times when an OpenURI::HTTPError occurs.

require "retryable"
require "open-uri"

include Retryable

retryable( :tries => 3, :on => OpenURI::HTTPError ) do
  xml = open( "http://example.com/test.xml" ).read
end

Do something, retry up to four times for either ArgumentError or TimeoutError exceptions.

require "retryable"
include Retryable

retryable( :tries => 5, :on => [ ArgumentError, TimeoutError ] ) do
  # some crazy code
end

Do something, retry up to three times for ArgumentError exceptions which smell like "Bacon", but have a nap between tries.

require "retryable"
include Retryable

retryable( :tries => 3, 
           :on => ArgumentError, 
           :matching => /Bacon/,
           :sleep => 3) do

  # some crazy code about bacon
end

:tries => 1, :on => Exception, :matching => /.*/, :sleep => 0

Many thanks to Chu Yeow for this nifty piece of code. Look, I liked it enough to enhance it a little bit and build a gem from it! :)