import threading import frame_dispatcher import modem import structlog import audio import ujson as json import explorer import beacon import radio_manager class SM: def __init__(self, app): self.log = structlog.get_logger("service") self.app = app self.modem = False self.beacon = False self.explorer = False self.app.radio_manager = False self.config = self.app.config_manager.read() self.modem_fft = app.modem_fft self.modem_service = app.modem_service self.state_manager = app.state_manager self.event_manager = app.event_manager runner_thread = threading.Thread( target=self.runner, name="runner thread", daemon=True ) runner_thread.start() def runner(self): while True: cmd = self.modem_service.get() if cmd in ['start'] and not self.modem: self.log.info("------------------ FreeDATA ------------------") self.log.info("------------------ MODEM ------------------") self.config = self.app.config_manager.read() self.start_radio_manager() self.start_modem() self.start_explorer_publishing() elif cmd in ['stop'] and self.modem: self.stop_modem() self.stop_explorer_publishing() self.stop_radio_manager() # we need to wait a bit for avoiding a portaudio crash threading.Event().wait(0.5) elif cmd in ['restart']: self.stop_modem() self.stop_explorer_publishing() self.stop_radio_manager() # we need to wait a bit for avoiding a portaudio crash threading.Event().wait(0.5) self.config = self.app.config_manager.read() self.start_radio_manager() if self.start_modem(): self.event_manager.modem_restarted() self.start_explorer_publishing() elif cmd in ['start_beacon']: self.start_beacon() elif cmd in ['stop_beacon']: self.stop_beacon() else: self.log.warning("[SVC] modem command processing failed", cmd=cmd, state=self.state_manager.is_modem_running) def start_modem(self): if self.state_manager.is_modem_running: self.log.warning("modem already running") return False # test audio devices audio_test = self.test_audio() if False in audio_test or None in audio_test or self.state_manager.is_modem_running: self.log.warning("starting modem failed", input_test=audio_test[0], output_test=audio_test[1]) self.state_manager.set("is_modem_running", False) self.event_manager.modem_failed() return False self.log.info("starting modem....") self.modem = modem.RF(self.config, self.event_manager, self.modem_fft, self.modem_service, self.state_manager, self.app.radio_manager) self.frame_dispatcher = frame_dispatcher.DISPATCHER(self.config, self.event_manager, self.state_manager, self.modem) self.frame_dispatcher.start() self.event_manager.modem_started() self.state_manager.set("is_modem_running", True) self.modem.start_modem() return True def stop_modem(self): self.log.info("stopping modem....") del self.modem self.modem = False self.state_manager.set("is_modem_running", False) self.event_manager.modem_stopped() def test_audio(self): try: audio_test = audio.test_audio_devices(self.config['AUDIO']['input_device'], self.config['AUDIO']['output_device']) self.log.info("tested audio devices", result=audio_test) return audio_test except Exception as e: self.log.error("Error testing audio devices", e=e) return [False, False] def start_beacon(self): self.beacon = beacon.Beacon(self.config, self.state_manager, self.event_manager, self.log, self.modem) self.beacon.start() def stop_beacon(self): self.beacon.stop() def start_explorer_publishing(self): try: # optionally start explorer module if self.config['STATION']['enable_explorer']: self.explorer = explorer.explorer(self.app, self.config, self.state_manager) except Exception as e: self.log.warning("[EXPLORER] Publishing not started because of error", e=e) def stop_explorer_publishing(self): if self.config['STATION']['enable_explorer']: try: del self.explorer except Exception as e: self.log.info("[EXPLORER] Error while stopping...", e=e) def start_radio_manager(self): self.app.radio_manager = radio_manager.RadioManager(self.config, self.state_manager, self.event_manager) def stop_radio_manager(self): self.app.radio_manager.stop() del self.app.radio_manager