module GameServer
  module Logging
    module Context
      def self.with(data)
        old = Thread.current[:log_ctx]
        Thread.current[:log_ctx] = data
        yield
      ensure
        Thread.current[:log_ctx] = old
      end

      def self.current
        ctx = Thread.current[:log_ctx]
        ctx ? ctx.map { |k,v| "#{k}=#{v} " }.join : ""
      end
    end
  end
end