我正在尝试使用此脚本的python-daemon来启动和停止后台运行某些代码。 (最终目标是在AWS实例中使用它。)
由于某些原因导致我的pid文件没有生成,我认为该进程没有运行。
Python脚本:
#standard python libs
import logging
import time
#third party libs
from daemon import runner
class App():
def __init__(self):
self.stdin_path = '/dev/null'
self.stdout_path = '/dev/tty'
self.stderr_path = '/dev/tty'
self.pidfile_path = '/Users/NAME/Documents/workspace/RandomThings/testdaemon.pid'
self.pidfile_timeout = 5
def run(self):
while True:
#Note that logger level needs to be set to logging.DEBUG before this shows up in the logs
logger.debug("Debug message")
logger.info("Info message")
logger.warn("Warning message")
logger.error("Error message")
#Main code goes here ...
sst=myClass()
sst.run()
time.sleep(10)
app = App()
logger = logging.getLogger("DaemonLog")
logger.setLevel(logging.INFO)
formatter = logging.Formatter("%(asctime)s - %(name)s - %(levelname)s - %(message)s")
handler = logging.FileHandler("/Users/NAME/Documents/workspace/RandomThings/testdaemon.log")
handler.setFormatter(formatter)
logger.addHandler(handler)
daemon_runner = runner.DaemonRunner(app)
#This ensures that the logger file handle does not get closed during daemonization
daemon_runner.daemon_context.files_preserve=[handler.stream]
daemon_runner.do_action()
我在shell(OSX)中做了:
python daemon.py start>>>>这运行但是没有创建pid文件(也尝试了sudo) python daemon.py stop>>>>返回错误:
Traceback(最近一次调用最后一次):文件“SST_daemon.py”,第68行,in daemon_runner.do_action()文件“/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/daemon/runner.py”, 第189行,在do_action中 func(self)File“/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/daemon/runner.py”, 第152行,在_stop中 u“PID文件%(pidfile_path)r未锁定”%vars())daemon.runner.DaemonRunnerStopFailureError:PID文件 '/Users/josefernandes/Documents/workspace/RandomThings/testdaemon.pid' 没锁定
到目前为止,我已经尝试解决这个问题几个小时没有结果。
为什么这不起作用?
非常感谢任何帮助!!!!!
答案 0 :(得分:2)
不确定为什么它不适合你,但也许下面的代码可能会清除一些东西。我确实需要即兴发挥,因为我没有你提到的myClass。我的垃圾邮件类中有一个run()方法循环:你的吗?如果你这样做,你可能会惊讶于你的App.run()循环没有循环,因为它保留在myClass中。但这是暂时的。
我不得不做一些路径更改,因为我没有OSX。但我试图不改变任何其他内容,下面的代码对我有用:
1 #standard python libs
2 import logging
3 import time
4
5 #third party libs
6 from daemon import runner
7 import spam.eggs
8
9 class App():
10
11 def __init__(self):
12 self.stdin_path = '/dev/null'
13 self.stdout_path = '/dev/tty'
14 self.stderr_path = '/dev/tty'
15 self.pidfile_path = '/home/fbicknel/tmp/testdaemon.pid'
16 self.pidfile_timeout = 5
17
18 def run(self):
19 while True:
20 #Note that logger level needs to be set to logging.DEBUG before this shows up in the logs
21 logger.debug("Debug message")
22 logger.info("Info message")
23 logger.warn("Warning message")
24 logger.error("Error message")
25 #Main code goes here ...
26 # sst=myClass()
27 # sst.run()
28 sst=spam.eggs.Eggs()
29 sst.run()
30 time.sleep(10)
31
32 app = App()
33 logger = logging.getLogger("DaemonLog")
34 logger.setLevel(logging.INFO)
35 formatter = logging.Formatter("%(asctime)s - %(name)s - %(levelname)s - %(message)s")
36 handler = logging.FileHandler("/home/fbicknel/tmp/testdaemon.log")
37 handler.setFormatter(formatter)
38 logger.addHandler(handler)
39
40 daemon_runner = runner.DaemonRunner(app)
41 #This ensures that the logger file handle does not get closed during daemonization
42 daemon_runner.daemon_context.files_preserve=[handler.stream]
43 daemon_runner.do_action()
我试图开始的一件事是完全消除myClass,让你的循环在run()中循环。这很有效,所以我在垃圾邮件中添加了.Eggs。
希望这会让你再次前进。
以下是我在spam / eggs.py中的模块:
1 import time
2 import logging
3
4 class Eggs(object):
5 def __init__(self, startvalue='green'):
6 " init a spam object "
7 self.logger = logging.getLogger("DaemonLog")
8 self.color = startvalue
9
10 @property
11 def color(self):
12 return self._color
13
14 @color.setter
15 def color(self, value):
16 self._color = value
17
18 def run(self):
19 ' Just loop sounding happy. '
20 while True:
21 self.logger.info("yippie kai ai o")
22 time.sleep(20)
23
24 if __name__ == "__main__":
25 spamalot = Eggs()
26 print spamalot.color
27 spamalot.color = 42
28 print spamalot.color