Contents

require_relative 'instrument'

module Metrics
  module Instruments
    class Gauge < Instrument
      attr_reader :units

      def initialize(options = {}, &block)
        raise ArgumentError, "a block is required" unless block_given?
        @block = block
        @units = options[:units]
      end

      def get
        instance_exec(&@block)
      end

      def as_json(*_)
        value = get
        value.respond_to?(:as_json) ? value.as_json : value
      end

      def to_json(*_)
        as_json.to_json
      end
    end
  end
end

Version data entries

4 entries across 4 versions & 1 rubygems

Version	Path
ruby-metrics-0.9.4	lib/ruby-metrics/instruments/gauge.rb
ruby-metrics-0.9.3	lib/ruby-metrics/instruments/gauge.rb
ruby-metrics-0.9.2	lib/ruby-metrics/instruments/gauge.rb
ruby-metrics-0.9.1	lib/ruby-metrics/instruments/gauge.rb