守护python的BaseHTTPServer

Question

我正在研究一个需要嵌入HTTP服务器的守护进程.我正在尝试使用BaseHTTPServer,当我在前台运行它时,它工作正常,但是当我尝试将守护进程分叉到后台时,它会停止工作.我的主要应用程序继续工作,但BaseHTTPServer没有.

我相信这与BaseHTTPServer将日志数据发送到STDOUT和STDERR这一事实有关.我正在将它们重定向到文件.这是代码片段:

# Start the HTTP Server
server = HTTPServer((config['HTTPServer']['listen'],config['HTTPServer']['port']),HTTPHandler)

# Fork our process to detach if not told to stay in foreground
if options.foreground is False:
    try:
        pid = os.fork()
        if pid > 0:
            logging.info('Parent process ending.')
            sys.exit(0)            
    except OSError, e:
        sys.stderr.write("Could not fork: %d (%s)\n" % (e.errno, e.strerror))
        sys.exit(1)

    # Second fork to put into daemon mode
    try: 
        pid = os.fork() 
        if pid > 0:
            # exit from second parent, print eventual PID before
            print 'Daemon has started - PID # %d.' % pid
            logging.info('Child forked as PID # %d' % pid)
            sys.exit(0) 
    except OSError, e: 
        sys.stderr.write("Could not fork: %d (%s)\n" % (e.errno, e.strerror))
        sys.exit(1)


    logging.debug('After child fork')

    # Detach from parent environment
    os.chdir('/') 
    os.setsid()
    os.umask(0) 

    # Close stdin       
    sys.stdin.close()

    # Redirect stdout, stderr
    sys.stdout = open('http_access.log', 'w')
    sys.stderr = open('http_errors.log', 'w')    

# Main Thread Object for Stats
threads = []

logging.debug('Kicking off threads')

while ...
  lots of code here
...

server.serve_forever()

我在这里做错了什么,或者BaseHTTPServer以某种方式阻止成为守护进程？

编辑:更新代码以演示额外的,以前缺少的代码流,并且log.debug显示在我的分叉后台后台守护程序中,我在fork之后遇到代码.

Answer 1

经过一段谷歌搜索后,我终于偶然发现了这个BaseHTTPServer文档,之后我最终得到了:

from BaseHTTPServer import BaseHTTPRequestHandler, HTTPServer
from SocketServer import ThreadingMixIn

class ThreadedHTTPServer(ThreadingMixIn, HTTPServer):
  """Handle requests in a separate thread."""

server = ThreadedHTTPServer((config['HTTPServer']['listen'],config['HTTPServer']['port']), HTTPHandler)
server.serve_forever()

在我分叉并最终解决我的问题之后,大部分都出现了.