Created
December 4, 2011 20:16
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retry code if case of some specific exception
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# I don't remember where I found it but it's useful in case of errors like: Net::HTTP::Persistent::Error: too many connection resets... | |
module Kernel | |
# Options | |
# ======= | |
# * :tries Number of retries to perform. Defaults to 1. | |
# Note this means it actually tries 2 times! | |
# * :on - The Exception on which a retry will be performed. Defaults to | |
# Exception, which retries on any Exception. | |
# * :delay - Delay in seconds before the next try (optional) | |
# | |
# * :before - if some asset requires reloading put in lambda, and it'll be called before retryging # Example | |
# ======= | |
# retryable(:tries => 1, :on => OpenURI::HTTPError) do | |
# # your code here | |
# end | |
# | |
def retryable(options = {}, &block) | |
opts = { :tries => 1, :on => Exception }.merge(options) | |
retry_exception, retries, delay, before = opts[:on], opts[:tries], opts[:delay], opts[:before] | |
begin | |
return yield | |
rescue retry_exception => e | |
Rails.logger.info("Retries #{retries}: #{e.class} - #{e.message}") | |
before.call if before.respond_to?(:call) | |
sleep delay unless delay.nil? | |
retry if (retries -= 1) > 0 | |
end | |
yield | |
end | |
end |
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