问题
With the rack-timeout gem installed how is it possible to display ERROR only related logs? For example I would like to avoid having the below in my logs:
source=rack-timeout id=8a11a8ac3dadb59a4f347d8e365faddf timeout=20000ms service=0ms state=active
source=rack-timeout id=8a11a8ac3dadb59a4f347d8e365faddf timeout=20000ms service=49ms state=completed
source=rack-timeout id=ee947d4a291d02821ab108c4c127f555 timeout=20000ms state=ready
The following did not work:
Rack::Timeout.unregister_state_change_observer(:active)
The below may be on the right path but I'm having trouble testing:
Rack::Timeout::Logger.level = Logger::ERROR
回答1:
(Note the class name was changed from Stage… to State… in v0.3.0)
In production I want to log at INFO level so I get a log message per request, but I don't want this noise from rack-timeout.
You can alter the STATE_LOG_LEVEL hash in the StateChangeLoggingObserver and change the log level used for the different states. I use this in my initialiser to prevent the ready and completed logs from showing:
Rack::Timeout::StateChangeLoggingObserver::STATE_LOG_LEVEL[:ready] = :debug
Rack::Timeout::StateChangeLoggingObserver::STATE_LOG_LEVEL[:completed] = :debug
回答2:
My solution to this problem was to give rack-timeout its own logger.
Once you've done that, you can change its log level:
# config/initializers/timeout.rb
Rack::Timeout::Logger.logger = Logger.new("log/timeout.log")
Rack::Timeout::Logger.logger.level = Logger::ERROR
回答3:
Read here for more information
https://github.com/heroku/rack-timeout#rails-apps-manually or https://github.com/heroku/rack-timeout/blob/master/doc/settings.md
You could also try this code, though untested.
Rack::Timeout::StageChangeLoggingObserver.logger = logger = ::Logger.new(STDERR)
logger.level = ::Logger::DEBUG
logger.formatter = ->(severity, timestamp, progname, msg) {"[#{timestamp}] #{msg} at=#{severity.downcase}\n" }
来源：https://stackoverflow.com/questions/33030781/rack-timeout-turn-off-info-active-logging