每个操作分离rails日志

Question

我有rails 3应用程序,它会产生大量的分析请求.不幸的是,这会淹没日志,我失去了我真正关心的主页请求.我想将这些请求分成一个单独的日志文件.有没有办法指定某些操作转到某个日志文件？或者可能是一种降低这些操作的日志记录级别的方法,然后在回读日志文件时只显示某些级别日志？

Answer 1

我找到了这个网站,它谈到了使用中间件来静默日志操作.我使用了相同的想法,最终编写了一个中间件,可以根据调用的操作交换记录器.这是中间件,我放在lib/noisy_logger.rb中

class NoisyLogger < Rails::Rack::Logger
  def initialize app, opts = {}
    @default_log = Rails.logger

    # Put the noisy log in the same directory as the default log.
    @noisy_log = Logger.new Rails.root.join('log', 'noisy.log')

    @app = app
    @opts = opts
    @opts[:noisy] = Array @opts[:noisy]

    super app
  end

  def call env
    if @opts[:noisy].include? env['PATH_INFO']
      logfile = @noisy_log
    else
      logfile = @default_log
    end

    # What?! Why are these all separate?
    ActiveRecord::Base.logger = logfile
    ActionController::Base.logger = logfile
    Rails.logger = logfile

    # The Rails::Rack::Logger class is responsible for logging the
    # 'starting GET blah blah' log line. We need to call super here (as opposed
    # to @app.call) to make sure that line gets output. However, the
    # ActiveSupport::LogSubscriber class (which Rails::Rack::Logger inherits
    # from) caches the logger, so we have to override that too
    @logger = logfile

    super
  end
end

然后是config/initializers/noisy_log.rb

MyApp::Application.config.middleware.swap(
  Rails::Rack::Logger, NoisyLogger, :noisy => "/analytics/track"
)

希望有人帮助!