110 lines
3.4 KiB
Python
110 lines
3.4 KiB
Python
from owrx.config import PropertyManager
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from urllib import request
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import json
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from datetime import datetime, timedelta
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import logging
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import threading
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from owrx.map import Map, LatLngLocation
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from owrx.bands import Bandplan
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logger = logging.getLogger(__name__)
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class DmrCache(object):
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sharedInstance = None
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@staticmethod
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def getSharedInstance():
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if DmrCache.sharedInstance is None:
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DmrCache.sharedInstance = DmrCache()
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return DmrCache.sharedInstance
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def __init__(self):
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self.cache = {}
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self.cacheTimeout = timedelta(seconds=86400)
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def isValid(self, key):
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if not key in self.cache:
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return False
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entry = self.cache[key]
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return entry["timestamp"] + self.cacheTimeout > datetime.now()
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def put(self, key, value):
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self.cache[key] = {"timestamp": datetime.now(), "data": value}
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def get(self, key):
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if not self.isValid(key):
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return None
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return self.cache[key]["data"]
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class DmrMetaEnricher(object):
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def __init__(self):
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self.threads = {}
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def downloadRadioIdData(self, id):
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cache = DmrCache.getSharedInstance()
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try:
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logger.debug("requesting DMR metadata for id=%s", id)
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res = request.urlopen("https://www.radioid.net/api/dmr/user/?id={0}".format(id), timeout=30).read()
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data = json.loads(res.decode("utf-8"))
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cache.put(id, data)
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except json.JSONDecodeError:
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cache.put(id, None)
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del self.threads[id]
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def enrich(self, meta):
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if not PropertyManager.getSharedInstance()["digital_voice_dmr_id_lookup"]:
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return None
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if not "source" in meta:
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return None
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id = meta["source"]
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cache = DmrCache.getSharedInstance()
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if not cache.isValid(id):
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if not id in self.threads:
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self.threads[id] = threading.Thread(target=self.downloadRadioIdData, args=[id])
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self.threads[id].start()
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return None
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data = cache.get(id)
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if "count" in data and data["count"] > 0 and "results" in data:
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return data["results"][0]
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return None
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class YsfMetaEnricher(object):
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def __init__(self, parser):
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self.parser = parser
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def enrich(self, meta):
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if "source" in meta and "lat" in meta and "lon" in meta:
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# TODO parsing the float values should probably happen earlier
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loc = LatLngLocation(float(meta["lat"]), float(meta["lon"]))
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Map.getSharedInstance().updateLocation(meta["source"], loc, "YSF", self.parser.getBand())
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return None
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class MetaParser(object):
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def __init__(self, handler):
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self.handler = handler
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self.enrichers = {"DMR": DmrMetaEnricher(), "YSF": YsfMetaEnricher(self)}
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self.band = None
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def setDialFrequency(self, freq):
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self.band = Bandplan.getSharedInstance().findBand(freq)
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def getBand(self):
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return self.band
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def parse(self, meta):
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fields = meta.split(";")
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meta = {v[0]: "".join(v[1:]) for v in map(lambda x: x.split(":"), fields) if v[0] != ""}
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if "protocol" in meta:
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protocol = meta["protocol"]
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if protocol in self.enrichers:
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additional_data = self.enrichers[protocol].enrich(meta)
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if additional_data is not None:
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meta["additional"] = additional_data
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self.handler.write_metadata(meta)
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