gistfile1.txt

module Callable
  def call(*args, &block)
    new(*args).call(&block)
  end

  module WithLogging
    def call(*args, &block)
      with_logging(*args) do
        new(*args).call(&block)
      end
    end

    def with_logging(*args)
      filters = Rails.application.config.filter_parameters
      f = ActionDispatch::Http::ParameterFilter.new filters

      output_log("Calling service: ") { f.filter(convert_to_hash(args)).to_json }
      result = yield
      output_log("Service result: ") { f.filter(convert_to_hash(result)).to_json }
      result
    end

    private

    def convert_to_hash(value)
      if value.is_a?(Hash)
        value
      else
        {result: value}
      end
    end

    def output_log(preamble)
      Rails.logger.info "#{preamble}: #{self.name} -- #{yield}"
    rescue
      Rails.logger.error  "#{preamble}: #{self.name} -- failed to serialize message"
    end
  end

end