在每个线程的基础上设置ruby logger.progname [英] set ruby logger.progname on per thread basis
问题描述
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可以正确地识别用户的不同线程,但是问题是我必须使用Mutex类进行同步,因此失去了并行计算,因为我必须等待请求被发送如果我想在日志中获取正确的程序名,则在继续操作之前收到该消息.
The above code correctly identifies the different threads by the user by setting the progname, but the problem is I have to use the Mutex class to synchronize it, thus loosing the parallel computing since I have to wait for the request to be sent and received before continuing if I want to get the correct progname in the logs.
是否有一种无需使用Mutex类即可执行此操作的方法.实时并行运行线程时,请在每个线程的基础上设置progname.
Is there a way to do this without using the Mutex class. Have the progname set on a per thread basis while running the threads in real-time parallel.
推荐答案
我终于找到了答案.您定义线程局部变量,然后修改日志格式化程序以在记录日志时将其包括在内.这是修改格式化程序的代码.
I have finally found my answer. You define a thread local variable and you modify the log formatter to include it when logging. Here is the code to modify the formatter.
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'
And in each thread you would add something like this :
Thread.current['id'] = 'whatever'
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