""" Estimate coordinates from WIFI_POSITIONING and send back """
+from configparser import ConfigParser
from datetime import datetime, timezone
+from importlib import import_module
from logging import getLogger
from os import umask
from struct import pack
from . import common
from .gps303proto import parse_message, WIFI_POSITIONING
-from .opencellid import qry_cell
from .zmsg import Bcast, Resp, topic
log = getLogger("gps303/lookaside")
-def runserver(conf):
- zctx = zmq.Context()
- zsub = zctx.socket(zmq.SUB)
+def runserver(conf: ConfigParser) -> None:
+ qry = import_module("." + conf.get("lookaside", "backend"), __package__)
+ qry.init(conf)
+ # Is this https://github.com/zeromq/pyzmq/issues/1627 still not fixed?!
+ zctx = zmq.Context() # type: ignore
+ zsub = zctx.socket(zmq.SUB) # type: ignore
zsub.connect(conf.get("collector", "publishurl"))
- tosub = topic(WIFI_POSITIONING.PROTO)
- zsub.setsockopt(zmq.SUBSCRIBE, tosub)
- zpush = zctx.socket(zmq.PUSH)
+ zsub.setsockopt(zmq.SUBSCRIBE, topic(WIFI_POSITIONING.PROTO))
+ zpush = zctx.socket(zmq.PUSH) # type: ignore
zpush.connect(conf.get("collector", "listenurl"))
try:
datetime.fromtimestamp(zmsg.when).astimezone(tz=timezone.utc),
msg,
)
- lat, lon = qry_cell(
- conf["opencellid"]["dbfn"], msg.mcc, msg.gsm_cells
- )
- resp = Resp(
- imei=zmsg.imei,
- packet=msg.Out(latitude=lat, longitude=lon).packed,
- )
- log.debug("Response for lat=%s, lon=%s: %s", lat, lon, resp)
- zpush.send(resp.packed)
+ try:
+ lat, lon = qry.lookup(
+ msg.mcc, msg.mnc, msg.gsm_cells, msg.wifi_aps
+ )
+ resp = Resp(
+ imei=zmsg.imei,
+ when=zmsg.when, # not the current time, but the original!
+ packet=msg.Out(latitude=lat, longitude=lon).packed,
+ )
+ log.debug("Response for lat=%s, lon=%s: %s", lat, lon, resp)
+ zpush.send(resp.packed)
+ except Exception as e:
+ log.warning("Lookup for %s resulted in %s", msg, e)
except KeyboardInterrupt:
pass