Module: Kernel

Defined in:
lib/retryable.rb

Instance Method Summary collapse

Instance Method Details

#retryable(options = {}, &block) ⇒ Object 



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# File 'lib/retryable.rb', line 5

def retryable(options = {}, &block)
  opts = {:tries => 2, :sleep => 1, :on => StandardError, :matching  => /.*/, :ensure => Proc.new {}}
  check_for_invalid_options(options, opts)
  opts.merge!(options)

  return if opts[:tries] == 0

  on_exception, tries = [ opts[:on] ].flatten, opts[:tries]
  retries = 0
  retry_exception = nil

  begin
    return yield retries, retry_exception
  rescue *on_exception => exception
    raise unless Retryable.enabled?
    raise unless exception.message =~ opts[:matching]
    raise if retries+1 >= opts[:tries]

    # Interrupt Exception could be raised while sleeping
    begin
      sleep opts[:sleep].respond_to?(:call) ? opts[:sleep].call(retries) : opts[:sleep]
    rescue *on_exception
    end

    retries += 1
    retry_exception = exception
    retry
  ensure
    opts[:ensure].call(retries)
  end
end