Question

一旦脚本被调试, 日志将无法再写入文件。因此, 如何以及何时才能初始化日志?

require  rubygems 
require  daemons 
require  logging 

def create_new_logger
    logger = Logging.logger[ trend-analyzer ]
    logger.add_appenders(
        Logging.appenders.rolling_file( ./logs/trend-analyzer.log ),
        Logging.appenders.stdout
    )
    logger.level = :debug
    return logger
end

logger = create_new_logger

#this log message gets written to the log file
logger.debug Time.new 

Daemons.run_proc( ForestPress , :log_dir =>  .logs , :backtrace => true) do
    running_as_daemon = true

    #this log message does NOT get written to the log file
    logger.debug Time.new

    loop do
        #this log message does NOT get written to the log file
        logger.info Time.new    
        sleep 5 
    end
end

<强 > EDIT

我注意到当前路径从我执行脚本的地方到 / 的路径变化。这可能就是为什么我无法对信件进行日志吗?

<强 > EDIT 2

现在我先保存原始路径,然后再成为守护进程,然后使用 Dir.chdir 来设置原始路径的路径。然后我可以直接打开文件并写入它。然而,日志宝石仍然无法写入它。

Answer 1

这就是它是如何开始运转的

require  rubygems 
require  daemons 
require  logging 

def create_new_logger
    logger = Logging.logger[ trend-analyzer ]
    logger.add_appenders(
        Logging.appenders.rolling_file( ./logs/trend-analyzer.log ),
        Logging.appenders.stdout
    )
    logger.level = :debug
    return logger
end

current_dir = Dir.pwd

Daemons.run_proc( ForestPress , :log_dir =>  .logs , :backtrace => true) do
    Dir.chdir(current_dir)  

    logger = create_new_logger

    loop do
        puts Dir.pwd
        logger.debug Time.new   
        sleep 5 
    end
end

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