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Contents
# frozen_string_literal: true
module Karafka
module Web
module Ui
module Lib
# Class used to execute code that can fail but we do not want to fail the whole operation.
# The primary use-case is for displaying deserialized data. We always need to assume, that
# part of the data can be corrupted and it should not crash the whole UI.
#
# It caches the result and does not run the code twice (only once)
class SafeRunner
attr_reader :error, :result
# @param block [Proc] code we want to safe-guard
def initialize(&block)
@code = block
@executed = false
@success = false
@error = nil
@result = nil
end
# @return [Boolean] was the code execution successful or not
def success?
return @success if executed?
call
@success
end
# @return [Boolean] was the code execution failed or not
def failure?
!success?
end
# Runs the execution and returns block result
def call
return @result if executed?
@executed = true
@result = @code.call
@success = true
@result
rescue StandardError => e
@error = e
@success = false
end
# @return [Boolean] was the code executed already or not yet
def executed?
@executed
end
end
end
end
end
end
Version data entries
5 entries across 5 versions & 1 rubygems