def __init__(self, cmd):

super(ProgramWrapper, self).__init__()

self.cmd = cmd

self.on_posix = 'posix' in sys.builtin_module_names

self.child_p = Popen(self.cmd, stdout=PIPE, stderr=PIPE, bufsize=1, close_fds=self.on_posix, shell=True)

def enqueue_output(self, out, queue, _type):

for line in iter(out.readline, ''):

if line != "\n":

queue.put((_type, line))

out.close()

def start(self):

q = Queue()

t1 = Thread(target=self.enqueue_output, args=(self.child_p.stdout, q, "info"))

self.threads.append(t1)

t2 = Thread(target=self.enqueue_output, args=(self.child_p.stderr, q, "error"))

self.threads.append(t2)

for thread in self.threads:

thread.start()

while True:

try:

_type, line = q.get_nowait()

except Empty:

time.sleep(1)

alive = False

for thread in self.threads:

alive = alive or thread.isAlive()

if not alive and q.empty():

break

else:

getattr(self.logger, _type)(line.strip()),

def stop(self, *args):

super(ProgramWrapper, self).stop(*args)

if self.child_p:

self.child_p.send_signal(signal.SIGTERM)

@classmethod

def parseArgs(cls):

parser = ArgumentParser(description="record stdout and stderr")

parser.add_argument('-c', '--cmd', dest="cmd", help='command to execute')