Class: Integer

Inherits:
Object
  • Object
show all
Defined in:
lib/times_retry.rb

Instance Method Summary collapse

Instance Method Details

#times_retry(msg = nil, *exceptions) ⇒ Object

Similar to the #times but with exception handling.

Sleep is calculated using a simple backoff function: ‘(60/ ((i+1) * 2))` where i is decremented by 1 on each raised exception.

5.times_retry do
  puts "Executed only once"
end

5.times_retry("Demo example", Timeout::Error, Errno::ECONNREFUSED) do
 raise Timeout::Error, "Testing a theory"
 puts "Will never print to STDOUT"
end



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# File 'lib/times_retry.rb', line 17

def times_retry(msg=nil, *exceptions)
  if exceptions.empty?
    exceptions << StandardError
  end

  downto(0) {|r|
    begin
      break yield
    rescue *exceptions => e
      raise e unless r > 0
      warn "#{e.class}: #{msg || e.message} will retry #{r} more time#{ r > 1 ? 's' : ''}"
      sleep (60 / ((r+1) * 2))
    end
  }
end