from datetime import datetime, timezone
from logging import getLogger
+from os import umask
from struct import pack
import zmq
from . import common
from .gps303proto import parse_message, proto_by_name, WIFI_POSITIONING
from .opencellid import qry_cell
-from .zmsg import Bcast, Resp
+from .zmsg import Bcast, LocEvt, Resp
log = getLogger("gps303/lookaside")
def runserver(conf):
zctx = zmq.Context()
+ zpub = zctx.socket(zmq.PUB)
+ oldmask = umask(0o117)
+ zpub.bind(conf.get("lookaside", "publishurl"))
+ umask(oldmask)
zsub = zctx.socket(zmq.SUB)
zsub.connect(conf.get("collector", "publishurl"))
- topic = pack("B", proto_by_name("WIFI_POSITIONING"))
- zsub.setsockopt(zmq.SUBSCRIBE, topic)
+ for protoname in (
+ "GPS_POSITIONING",
+ "WIFI_POSITIONING",
+ ):
+ topic = pack("B", proto_by_name(protoname))
+ zsub.setsockopt(zmq.SUBSCRIBE, topic)
zpush = zctx.socket(zmq.PUSH)
zpush.connect(conf.get("collector", "listenurl"))
datetime.fromtimestamp(zmsg.when).astimezone(tz=timezone.utc),
msg,
)
- if not isinstance(msg, WIFI_POSITIONING):
- log.error(
- "IMEI %s from %s at %s: %s",
- zmsg.imei,
- zmsg.peeraddr,
- datetime.fromtimestamp(zmsg.when).astimezone(
- tz=timezone.utc
- ),
- msg,
+ if isinstance(msg, WIFI_POSITIONING):
+ is_gps = False
+ lat, lon = qry_cell(
+ conf["opencellid"]["dbfn"], msg.mcc, msg.gsm_cells
)
- continue
- lat, lon = qry_cell(
- conf["opencellid"]["dbfn"], msg.mcc, msg.gsm_cells
+ resp = Resp(
+ imei=zmsg.imei, packet=msg.Out(lat=lat, lon=lon).packed
+ )
+ log.debug("Response for lat=%s, lon=%s: %s", lat, lon, resp)
+ zpush.send(resp.packed)
+ else:
+ is_gps = True
+ lat = msg.latitude
+ lon = msg.longitude
+ zpub.send(
+ LocEvt(
+ imei=zmsg.imei,
+ devtime=msg.devtime,
+ is_gps=is_gps,
+ lat=lat,
+ lon=lon,
+ ).packed
)
- resp = Resp(imei=zmsg.imei, packet=msg.response(lat=lat, lon=lon))
- log.debug("Response for lat=%s, lon=%s: %s", lat, lon, resp)
- zpush.send(resp.packed)
except KeyboardInterrupt:
pass