Retryable is a project mainly written in Ruby, it's free.
Kernel#retryable, by Cheah Chu Yeow (http://is.gd/faW9), slightly enhanced and rebuilt as gem as a little Munich Hackday project.
PlEASE NOTE: Kernel#retryable has a new home!
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 two optional parameters --:tries
and :on
--, and
runs the passed block. Should an exception occur, it'll retry for (n-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"
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"
retryable( :tries => 5, :on => [ ArgumentError, TimeoutError ] ) do
# some crazy code
end
:tries => 1, :on => Exception
First, make sure GitHub is a gem source. Then, install the gem:
sudo gem install carlo-retryable
:tries
was set to 0
. (Thanks for the
heads-up to Tuker.)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! :)