stopping rosbag record from script

asked 2020-12-17 04:57:05 -0600

azerila
25 ●30 ●35 ●38

I have a python subprocess that starts recording a topic through rosbag:

    self.ros_bag_recorder = subprocess.Popen(['rosbag', 'record', '-O',
                                             os.path.expanduser('~/some_address),
                                             '/the_topic'],
                                            env=self.venv,
                                            stdout=subprocess.PIPE,  
                                            stderr=sys.stderr
                                             )

which normally I would have executed in a terminal and after pressing ctrl+c the recording was stopped ( the bag file from .bag.active would have changed to .bag). However now that I have started it through suprocess and want to also stop it with an script rather than terminal, commands such as followings haven't worked:

    self.ros_bag_recorder.send_signal(signal.SIGTERM)

    self.ros_bag_recorder.send_signal(signal.SIGKILL)

    self.ros_bag_recorder.send_signal(signal.SIGINT)

Does anyone know a way to stop the recording similar to when we just press ctrl+c in terminal?

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for proc in psutil.process_iter(): if "record" in proc.name() and set(command[2:]).issubset(proc.cmdline()): proc.send_signal(subprocess.signal.SIGINT) self.ros_bag_recorder.send_signal(subprocess.signal.SIGINT)

Comments

is 'command' the same as the command that was used as input to Popen?

azerila ( 2020-12-17 08:05:24 -0600 )edit

Yes, exactly.

gstavrinos ( 2020-12-17 08:08:25 -0600 )edit

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