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Contents
# frozen_string_literal: true
module ConvenientService
module Examples
module Standard
class Factorial
module Utils
module Timeout
class WithTimeout < ConvenientService::Command
ReturnStruct = ::Struct.new(:timeout?, :value, keyword_init: true)
attr_reader :seconds, :block
def initialize(seconds, &block)
@seconds = seconds
@block = block
end
##
# @internal
# NOTE: Prefer to avoid `Timeout.timeout` if you are NOT absolutely 100% sure what you are doing. See the following articles for details.
# - https://github.com/ruby/timeout/blob/master/lib/timeout.rb
# - https://adamhooper.medium.com/in-ruby-dont-use-timeout-77d9d4e5a001
# - https://flushentitypacket.github.io/ruby/2015/02/21/ruby-timeout-how-does-it-even-work.html
# - https://www.exceptionalcreatures.com/bestiary/Timeout/Error
# - https://github.com/ankane/the-ultimate-guide-to-ruby-timeouts#regexp
#
def call
return struct(timeout?: false, value: block.call) if seconds.nil?
return struct(timeout?: true, value: nil) if seconds.zero?
begin
struct(timeout?: false, value: ::Timeout.timeout(seconds, &block))
rescue ::Timeout::Error
struct(timeout?: true, value: nil)
end
end
private
def struct(**kwargs)
ReturnStruct.new(**kwargs)
end
end
end
end
end
end
end
end
Version data entries
5 entries across 5 versions & 1 rubygems