登录Sinatra? [英] Logging in Sinatra?

问题描述

我在弄清楚如何使用Sinatra记录消息时遇到了麻烦.我不是要记录请求，而是要在应用程序中的某些点记录自定义消息.例如，在获取URL时，我想登录"Fetching #{url}".

I'm having trouble figuring out how to log messages with Sinatra. I'm not looking to log requests, but rather custom messages at certain points in my app. For example, when fetching a URL I would like to log "Fetching #{url}".

这就是我想要的:

• 指定日志级别的功能(例如:logger.info("Fetching #{url}"))
• 在开发和测试环境中，消息将被写入控制台.
• 在生产中，仅写出与当前日志级别匹配的消息.

我猜想这可以在config.ru中轻松完成，但是我不确定100％是否要启用哪个设置，以及是否必须自己手动创建Logger对象(还有， Logger使用的类别:Logger，Rack::Logger或Rack::CommonLogger).

I'm guessing this can easily be done in config.ru, but I'm not 100% sure which setting I want to enable, and if I have to manually create a Logger object myself (and furthermore, which class of Logger to use: Logger, Rack::Logger, or Rack::CommonLogger).

(我知道在StackOverflow上也有类似的问题，但是似乎没有一个问题可以直接回答我的问题.如果您能指出我现有的问题，我会将其标记为重复).

(I know there are similar questions on StackOverflow, but none seem to directly answer my question. If you can point me to an existing question, I will mark this one as a duplicate).

推荐答案

Sinatra 1.3附带了这样的记录器对象，与上面所述完全一样.您可以按照"出血边缘中的说明使用边缘Sinatra.我猜我们要等到1.3发行才这么久.

Sinatra 1.3 will ship with such a logger object, exactly usable as above. You can use edge Sinatra as described in "The Bleeding Edge". Won't be that long until we'll release 1.3, I guess.

要在Sinatra 1.2中使用它，请执行以下操作:

To use it with Sinatra 1.2, do something like this:

require 'sinatra'
use Rack::Logger

helpers do
  def logger
    request.logger
  end
end

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