FreeDATA/modem/service_manager.py

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