Custom Ruby Error Handling

Custom Ruby Error Handling.rb

class MyCustomError < StandardError
  attr_reader :object

  def initialize(object)
    @object = object
  end
end

begin
  raise MyCustomError.new("an object"), "a message"
rescue Exception => e
  puts e.message # => "a message"
  puts e.object # => "an object"
end

module Mozart
  module Composition
    module Error
      class FailedComponentRequest < StandardError
        def initialize(url)
          super "The service was unable to be reached with the following #{url}"
        end
      end
    end
  end
end

Use it like so:

fail ::Composition::Error::FailedComponentRequest.new(url)