Monkey patch to instrument Moped 1.x same as 2.x.

moped1x_instrumenter.rb

# Monkey patch to instrument Moped 1.x same as 2.x.
# Can be removed after upgrading to Mongoid 4.

module Moped
  module Instrumentable
    class Noop

      class << self

        # Do not instrument anything.
        def instrument(name, payload = {})
          yield payload if block_given?
        end
      end
    end
  end
end

module Moped
  module Instrumentable

    TOPIC = "query.moped"

    def instrumenter
      @instrumenter ||= Moped::Instrumentable::Noop
    end

    def instrument(name, payload = {}, &block)
      instrumenter.instrument(name, payload, &block)
    end
  end
end

module Moped
  class Node
    include Moped::Instrumentable

    def logging_with_instrument(operations, &block)
      instrument(TOPIC, prefix: "  MOPED: #{resolved_address}", ops: operations) do
        logging_without_instrument(operations, &block)
      end
    end
    alias_method_chain :logging, :instrument
  end
end