Forked from jaimeiniesta/reply_upto_with_numeric_or_lambda.rb
Created
October 7, 2011 15:19
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retry_upto.rb
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# Ruby `retry` with steroids: | |
# | |
# - retry up to 5 times without waiting between them and retrying after any exception | |
# | |
# retry_upto(5) do ... end | |
# | |
# - retry up to 5 times, waiting 2 seconds between retries and retrying after any exception | |
# | |
# retry_upto(5, :wait => 2) do ... end | |
# | |
# - retry up to 5 times, waiting 1 second initially and having increasing patience (2, 4, 8, ...) | |
# | |
# retry_upto(5, :wait => 1, :patience => 2) do ... end | |
# | |
# - retry up to 5 times, waiting 1 second initially and having decreasing patience (0.5, 0.25, 0.125, ...) | |
# | |
# retry_upto(5, :wait => 1, :patience => 0.5) do ... end | |
# | |
# - retry up to 5 times without waiting between retries, retrying only after a ZeroDivisionError | |
# | |
# retry_upto(5, :rescue_only => ZeroDivisionError) do ... end | |
# | |
# - retry up to 5 times, waiting 2 seconds between retries, retrying only after a ZeroDivisionError | |
# | |
# retry_upto(5, :wait => 2, :rescue_only => ZeroDivisionError) do ... end | |
def retry_upto(max_retries = 1, options = {}) | |
begin | |
return yield if ((max_retries -= 1) > 0) | |
rescue (options[:rescue_only] || Exception) | |
sleep((options[:wait] || 0) * (options[:patience] || 1)) | |
retry | |
end | |
yield | |
end |
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mmm, this wouldn't make a cumulative series. If we pass in :wait => 1, :patience => 2, it should wait 2, 4, 8, 16...
but in your example it will wait 2, 2, 2, 2...