104 lines
2.7 KiB
Python
104 lines
2.7 KiB
Python
from datetime import datetime, timedelta
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import threading, time
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from owrx.config import PropertyManager
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import logging
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logger = logging.getLogger(__name__)
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class Location(object):
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def __dict__(self):
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return {}
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class Map(object):
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sharedInstance = None
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@staticmethod
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def getSharedInstance():
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if Map.sharedInstance is None:
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Map.sharedInstance = Map()
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return Map.sharedInstance
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def __init__(self):
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self.clients = []
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self.positions = {}
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def removeLoop():
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while True:
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try:
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self.removeOldPositions()
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except Exception:
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logger.exception("error while removing old map positions")
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time.sleep(60)
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threading.Thread(target=removeLoop, daemon=True).start()
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super().__init__()
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def broadcast(self, update):
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for c in self.clients:
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c.write_update(update)
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def addClient(self, client):
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self.clients.append(client)
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client.write_update([
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{
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"callsign": callsign,
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"location": record["location"].__dict__(),
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"lastseen": record["updated"].timestamp() * 1000
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}
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for (callsign, record) in self.positions.items()
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])
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def removeClient(self, client):
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try:
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self.clients.remove(client)
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except ValueError:
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pass
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def updateLocation(self, callsign, loc: Location):
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ts = datetime.now()
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self.positions[callsign] = {"location": loc, "updated": ts}
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self.broadcast([
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{
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"callsign": callsign,
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"location": loc.__dict__(),
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"lastseen": ts.timestamp() * 1000
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}
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])
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def removeLocation(self, callsign):
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self.positions.pop(callsign, None)
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# TODO broadcast removal to clients
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def removeOldPositions(self):
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pm = PropertyManager.getSharedInstance()
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retention = timedelta(seconds=pm["map_position_retention_time"])
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cutoff = datetime.now() - retention
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to_be_removed = [callsign for (callsign, pos) in self.positions.items() if pos["updated"] < cutoff]
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for callsign in to_be_removed:
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self.removeLocation(callsign)
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class LatLngLocation(Location):
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def __init__(self, lat: float, lon: float):
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self.lat = lat
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self.lon = lon
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def __dict__(self):
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return {
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"type":"latlon",
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"lat":self.lat,
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"lon":self.lon
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}
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class LocatorLocation(Location):
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def __init__(self, locator: str):
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self.locator = locator
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def __dict__(self):
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return {
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"type":"locator",
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"locator":self.locator
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}
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