Question

我有rails 3应用程序，可以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要页面请求。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this site，其中谈到了使用中间件来静音日志操作。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，我把它放在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"
)

希望能帮助别人！

Answer 2

一个选项可能是使用像New Relic这样的服务，它会为您提供所需的范围（每个操作）。

每个操作分离rails日志

2 个答案: