Module: Norton::TimedValue::ClassMethods

Defined in:
lib/norton/timed_value.rb

Instance Method Summary collapse

Instance Method Details

#timed_value(name, options = {}, &blk) ⇒ Object 



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# File 'lib/norton/timed_value.rb', line 7

def timed_value(name, options={}, &blk)
  if options[:ttl].nil?
    raise 'Time to live not specified.'
  end

  if blk.nil?
    raise 'Value generation not provided'
  end

  # Define getter
  define_method(name) do
    Norton.redis.with do |conn|
      v = conn.get(self.norton_value_key(name))

      if v.nil?
        v = instance_eval(&blk)
        conn.setex(self.norton_value_key(name), options[:ttl], v)
      end

      v
    end
  end

  define_method("reset_#{name}") do
    Norton.redis.with do |conn|
      v = instance_eval(&blk)
      conn.setex(self.norton_value_key(name), options[:ttl], v)
      v
    end
  end
end