什么是“官方”？在Heroku上支持Unicorn的方式，而不会丢失日志记录？

问题描述

我们切换到独角兽，但失去了Heroku上的所有应用程序日志记录。我搜索了一下，学习了Heroku的Ruby buildpack安装了一个插件rails_log_stdout，这对Unicorn来说并不好。我的猜测是这与独角兽的分叉性质有关，但我没有证实。

像在哪里建议。这些让我感到不满意，因为它们不会使用Rails应用程序中定义的日志级别或任何标记，或者记录器格式覆盖等。这对我来说似乎有点蛮横的力量。什么是正式的方式来做到这一点的权利？

解决方案

这是我如何重新实例化记录器以避免丢失日志记录级别或登录标签。我必须在每个环境文件 production.rb ， staging.rb 中分别执行此操作（如果有的话） ，等等。

  MyApp :: Application.configure do 
 
＃... 
 
 logger = Logger.new（STDOUT）
 logger = ActiveSupport :: TaggedLogging.new（logger）if defined？（ActiveSupport :: TaggedLogging）
 config.logger = logger 
 log_level_env_override = Logger.const_get（ENV ['LOG_LEVEL']。try（：upcase））rescue nil 
 config.logger.level = log_level_env_override || Logger.const_get（Rails.configuration.log_level.to_s.upcase）
 
＃... 
 
 end 
  

我没有爱上这个。我希望有更优雅的东西烘焙到独角兽中。

We switched to Unicorn, but lost all app logging on Heroku. I googled around a bit and learned Heroku's Ruby buildpack installs a plugin "rails_log_stdout" which doesn't play nice with Unicorn. My guess would be this has something to do with the forking nature of Unicorn, but I didn't confirm that.

Various workarounds like https://gist.github.com/jamiew/2227268 where suggested. These strike me as dis-satisfying because they won't use the log levels defined in the Rails app or any tags, or logger formatting overrides, etc. It seemed a bit brute force to me. What's the "official" way to do this right?

解决方案

This is how I've re-instantiated the logger to avoid losing logging levels or loggin tags. I had to do this separately in each environment file, production.rb, staging.rb (if you have it), etc.

MyApp::Application.configure do

  # ...

  logger = Logger.new(STDOUT)
  logger = ActiveSupport::TaggedLogging.new(logger) if defined?(ActiveSupport::TaggedLogging)
  config.logger = logger
  log_level_env_override = Logger.const_get(ENV['LOG_LEVEL'].try(:upcase)) rescue nil
  config.logger.level = log_level_env_override || Logger.const_get(Rails.configuration.log_level.to_s.upcase)

  # ...

end

I'm not in love with this. I was hoping that there was something more elegant baked into Unicorn.

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