From e79430cdc4c07355132fd0e8551a653de780c70c Mon Sep 17 00:00:00 2001 From: Fabio Manganiello Date: Tue, 13 Aug 2019 22:25:28 +0200 Subject: [PATCH] Implemented tolerance threshold for lat/long/alt in GPS backend --- platypush/backend/gps.py | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/platypush/backend/gps.py b/platypush/backend/gps.py index 9620ad2c8..418053cfe 100644 --- a/platypush/backend/gps.py +++ b/platypush/backend/gps.py @@ -30,6 +30,8 @@ class GpsBackend(Backend): """ _fail_sleep_time = 5.0 + _lat_lng_tolerance = 1e-5 + _alt_tolerance = 0.5 def __init__(self, gpsd_server='localhost', gpsd_port=2947, **kwargs): """ @@ -82,14 +84,19 @@ class GpsBackend(Backend): def run(self): super().run() self.logger.info('Initialized GPS backend on {}:{}'.format(self.gpsd_server, self.gpsd_port)) + last_event = None while not self.should_stop(): try: session = self._get_session() report = session.next() 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) + last_event = event except Exception as e: if isinstance(e, StopIteration): self.logger.warning('GPS service connection lost, check that gpsd is running')