7

在 Mac OS X Lion 上使用 Ruby v1.8.7 和 Daemons v1.1.8，我正在尝试编写一个消费者进程并让它作为一个守护进程运行：

# config[:name] => 'idx_my_delete_consumer'
# config[:daemon] => {:multiple => false,
# :backtrace => true,
# :dir_mode => :normal,
# :log_dir => '/Users/pprakash/consumer.log',
# :monitor => true,
# :dir => '/Users/pprakash/pids'}

 Daemons.run_proc(config[:name], config[:daemon]) 做
    消费者 = MyConsumer.new(config)  
    消费者订阅
  结尾

然而，它并没有启动，而是抛出了一个很长的回溯，如下所示：

E, [2012-05-28T19:34:16.199770 #29357] 错误 -- : 错误的文件描述符 (Errno::EBADF)
/opt/local/lib/ruby/gems/1.8/gems/daemons-1.1.8/lib/daemons/daemonize.rb:134:in `for_fd'
/opt/local/lib/ruby/gems/1.8/gems/daemons-1.1.8/lib/daemons/daemonize.rb:134:in `close_io'
/opt/local/lib/ruby/gems/1.8/gems/daemons-1.1.8/lib/daemons/daemonize.rb:134:in `initialize'
/opt/local/lib/ruby/gems/1.8/gems/daemons-1.1.8/lib/daemons/daemonize.rb:134:in `new'
/opt/local/lib/ruby/gems/1.8/gems/daemons-1.1.8/lib/daemons/daemonize.rb:134:in `close_io'
/opt/local/lib/ruby/gems/1.8/gems/daemons-1.1.8/lib/daemons/daemonize.rb:75:in `call_as_daemon'
/opt/local/lib/ruby/gems/1.8/gems/daemons-1.1.8/lib/daemons/application.rb:258:in `start_proc'
/opt/local/lib/ruby/gems/1.8/gems/daemons-1.1.8/lib/daemons/application.rb:295:in `start'
/opt/local/lib/ruby/gems/1.8/gems/daemons-1.1.8/lib/daemons/monitor.rb:51:in `watch'
/opt/local/lib/ruby/gems/1.8/gems/daemons-1.1.8/lib/daemons/monitor.rb:51:in `fork'
/opt/local/lib/ruby/gems/1.8/gems/daemons-1.1.8/lib/daemons/monitor.rb:51:in `watch'
/opt/local/lib/ruby/gems/1.8/gems/daemons-1.1.8/lib/daemons/monitor.rb:45:in `each'
/opt/local/lib/ruby/gems/1.8/gems/daemons-1.1.8/lib/daemons/monitor.rb:45:in `watch'
/opt/local/lib/ruby/gems/1.8/gems/daemons-1.1.8/lib/daemons/monitor.rb:44:in `loop'
/opt/local/lib/ruby/gems/1.8/gems/daemons-1.1.8/lib/daemons/monitor.rb:44:in `watch'
/opt/local/lib/ruby/gems/1.8/gems/daemons-1.1.8/lib/daemons/monitor.rb:84:in `start_with_pidfile'
/opt/local/lib/ruby/gems/1.8/gems/daemons-1.1.8/lib/daemons/monitor.rb:64:in `fork'
/opt/local/lib/ruby/gems/1.8/gems/daemons-1.1.8/lib/daemons/monitor.rb:64:in `start_with_pidfile'
/opt/local/lib/ruby/gems/1.8/gems/daemons-1.1.8/lib/daemons/monitor.rb:111:in `start'
/opt/local/lib/ruby/gems/1.8/gems/daemons-1.1.8/lib/daemons/application_group.rb:149:in `create_monitor'
/opt/local/lib/ruby/gems/1.8/gems/daemons-1.1.8/lib/daemons/application.rb:284:in `start'
/opt/local/lib/ruby/gems/1.8/gems/daemons-1.1.8/lib/daemons/controller.rb:70:in `run'
/opt/local/lib/ruby/gems/1.8/gems/daemons-1.1.8/lib/daemons.rb:197:in `run_proc'
/opt/local/lib/ruby/gems/1.8/gems/daemons-1.1.8/lib/daemons/cmdline.rb:109:in `call'
/opt/local/lib/ruby/gems/1.8/gems/daemons-1.1.8/lib/daemons/cmdline.rb:109:in `catch_exceptions'
/opt/local/lib/ruby/gems/1.8/gems/daemons-1.1.8/lib/daemons.rb:196:in `run_proc'
用户/delete_consumer.rb:40

我不确定是什么导致了这个问题？目录名、日志文件名都有效。我能够使用这些配置创建 MyConsumer 的实例，并能够从独立程序/控制台正确执行其#subscribe。

4

2 回答 2

3

根据我使用 Ruby 守护程序的经验，我发现此类错误表明底层块（被守护程序）包含错误。修复这些错误也修复了这个错误。

于 2013-03-28T08:05:41.443 回答
0

您的示例中确实有可能导致错误的拼写错误。检查 MyConsumer 的拼写，您将 s 和 n 调换了...

consumer = MyCosnumer.new(config)
于 2013-03-27T15:56:17.670 回答