Take care of unclean shutdown with Ctrl+C KeyboardInterrupt

[dspruell]

Address busted shutdown at Ctrl-c/process termination.

^CTraceback (most recent call last):
  File "/Users/dspruell/bin/ampt-monitor", line 11, in <module>
Process Plugin[suricata_eve]:
Process Plugin[bro]:
    load_entry_point('ampt-monitor', 'console_scripts', 'ampt-monitor')()
  File "/Users/dspruell/devel/ampt-monitor/core/ampt_monitor/cli.py", line 100, in main
    ampt_monitor.run()
  File "/Users/dspruell/devel/ampt-monitor/core/ampt_monitor/amptmonitor.py", line 103, in run
evt = queue.get()
  File "/usr/local/Cellar/python/3.7.0/Frameworks/Python.framework/Versions/3.7/lib/python3.7/multiprocessing/queues.py", line 94, in get
res = self._recv_bytes()
  File "/usr/local/Cellar/python/3.7.0/Frameworks/Python.framework/Versions/3.7/lib/python3.7/multiprocessing/connection.py", line 216, in recv_bytes
    buf = self._recv_bytes(maxlength)
  File "/usr/local/Cellar/python/3.7.0/Frameworks/Python.framework/Versions/3.7/lib/python3.7/multiprocessing/connection.py", line 407, in _recv_bytes
Traceback (most recent call last):
  File "/usr/local/Cellar/python/3.7.0/Frameworks/Python.framework/Versions/3.7/lib/python3.7/multiprocessing/process.py", line 297, in _bootstrap
    self.run()
    buf = self._recv(4)
  File "/usr/local/Cellar/python/3.7.0/Frameworks/Python.framework/Versions/3.7/lib/python3.7/multiprocessing/process.py", line 99, in run
    self._target(*self._args, **self._kwargs)
  File "/usr/local/Cellar/python/3.7.0/Frameworks/Python.framework/Versions/3.7/lib/python3.7/multiprocessing/connection.py", line 379, in _recv
  File "/Users/dspruell/devel/ampt-monitor/plugins/suricata_eve/ampt_monitor_suricata_eve/plugin.py", line 39, in run
    for eve_log in self._tail_logfile(self.config['path']):
  File "/Users/dspruell/devel/ampt-monitor/plugins/suricata_eve/ampt_monitor_suricata_eve/plugin.py", line 89, in _tail
_logfile
    time.sleep(self.interval)
Traceback (most recent call last):
KeyboardInterrupt
  File "/usr/local/Cellar/python/3.7.0/Frameworks/Python.framework/Versions/3.7/lib/python3.7/multiprocessing/process.py", line 297, in _bootstrap
    self.run()
  File "/usr/local/Cellar/python/3.7.0/Frameworks/Python.framework/Versions/3.7/lib/python3.7/multiprocessing/process.py", line 99, in run
    self._target(*self._args, **self._kwargs)
  File "/Users/dspruell/devel/ampt-monitor/plugins/bro/ampt_monitor_bro/plugin.py", line 41, in run
    for bro_log in self._tail_logfile(self.config['path']):
  File "/Users/dspruell/devel/ampt-monitor/plugins/bro/ampt_monitor_bro/plugin.py", line 91, in _tail_logfile
    sleep(self.interval)
KeyboardInterrupt
    chunk = read(handle, remaining)
KeyboardInterrupt

Possible resources:

• http://jtushman.github.io/blog/2014/01/14/python-|-multiprocessing-and-interrupts/
• https://stackoverflow.com/questions/11312525/catch-ctrlc-sigint-and-exit-multiprocesses-gracefully-in-python
• https://stackoverflow.com/questions/21104997/keyboard-interrupt-with-pythons-multiprocessing