在每个线程的基础上设置ruby logger.progname

Question

我有这个 :

class Stress
  def initialize(user, pass)
    @user = user
    @pass = pass
    @agent = Mechanize.new do |a|
      a.user_agent_alias = 'Windows Mozilla'
      a.history.max_size = 0
      a.log = my_log
      a.log.progname = @user
    end
  end
  def browse
  @agent.log.progname = @user
  # open/close page
  end
end

my_log = Logger.new('dump.log')
my_log.level = Logger::DEBUG
atom = Mutex.new

for i in (Attempts_start..Attempts_end)
  threads << Thread.new(Creden_base + i.to_s) do |user|
    stress = Stress.new(user, user)
    for j in (0..Attempts_req) do
        atom.synchronize {stress.browse} # has to be atomic
    end
  end
end

上面的代码通过设置progname正确识别用户的不同线程,但问题是我必须使用Mutex类来同步它,从而失去并行计算,因为我必须等待请求发送和接收之前如果我想在日志中获得正确的预测,请继续.

有没有办法在不使用Mutex类的情况下执行此操作.在实时并行运行线程的同时,以每个线程为基础设置progname.

Answer 1

我终于找到了答案.您可以定义线程局部变量,并在日志记录时修改日志格式化程序以包含它.这是修改格式化程序的代码.

  Log.formatter = proc do |severity, datetime, progname, msg|
    "#{severity} [#{Time.now.strftime('%H:%M:%S')}] #{Thread.current['id']} --> #{msg}\n"
  end

在每个线程中,您将添加如下内容: Thread.current['id'] = 'whatever'