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Implemented tolerance threshold for lat/long/alt in GPS backend

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This commit is contained in:
Fabio Manganiello 2019-08-13 22:25:28 +02:00
parent 228e656da8
commit e79430cdc4
1 changed files with 8 additions and 1 deletions
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9
platypush/backend/gps.py
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@ -30,6 +30,8 @@ class GpsBackend(Backend):
""" """
_fail_sleep_time = 5.0 _fail_sleep_time = 5.0
_lat_lng_tolerance = 1e-5
_alt_tolerance = 0.5
def __init__(self, gpsd_server='localhost', gpsd_port=2947, **kwargs): def __init__(self, gpsd_server='localhost', gpsd_port=2947, **kwargs):
""" """
@ -82,14 +84,19 @@ class GpsBackend(Backend):
def run(self): def run(self):
super().run() super().run()
self.logger.info('Initialized GPS backend on {}:{}'.format(self.gpsd_server, self.gpsd_port)) self.logger.info('Initialized GPS backend on {}:{}'.format(self.gpsd_server, self.gpsd_port))
last_event = None
while not self.should_stop(): while not self.should_stop():
try: try:
session = self._get_session() session = self._get_session()
report = session.next() report = session.next()
event = self._gps_report_to_event(report) event = self._gps_report_to_event(report)
if event: if event and (last_event is None or
abs((last_event.args.get('latitude') or 0) - (event.args.get('latitude') or 0)) >= self._lat_lng_tolerance or
abs((last_event.args.get('longitude') or 0) - (event.args.get('longitude') or 0)) >= self._lat_lng_tolerance or
abs((last_event.args.get('altitude') or 0) - (event.args.get('altitude') or 0)) >= self._alt_tolerance):
self.bus.post(event) self.bus.post(event)
last_event = event
except Exception as e: except Exception as e:
if isinstance(e, StopIteration): if isinstance(e, StopIteration):
self.logger.warning('GPS service connection lost, check that gpsd is running') self.logger.warning('GPS service connection lost, check that gpsd is running')