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spothole/core/lookup_helper.py

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import gzip
import json
import logging
import re
import urllib.parse
from datetime import timedelta
import xmltodict
from diskcache import Cache
from pyhamtools import LookupLib, Callinfo, callinfo
from pyhamtools.exceptions import APIKeyMissingError
from pyhamtools.frequency import freq_to_band
from pyhamtools.locator import latlong_to_locator
from requests_cache import CachedSession
from core.cache_utils import SEMI_STATIC_URL_DATA_CACHE
from core.config import config
from core.constants import BANDS, UNKNOWN_BAND, CW_MODES, PHONE_MODES, DATA_MODES, ALL_MODES, \
HTTP_HEADERS, HAMQTH_PRG
# Singleton class that provides lookup functionality.
class LookupHelper:
# Create the lookup helper. Note that nothing actually happens until the start() method is called, and that all
# lookup methods will fail if start() has not yet been called. This therefore needs starting before any spot or
# alert handlers are created.
def __init__(self):
self.CLUBLOG_CALLSIGN_DATA_CACHE = None
self.LOOKUP_LIB_CLUBLOG_XML = None
self.CLUBLOG_XML_AVAILABLE = None
self.LOOKUP_LIB_CLUBLOG_API = None
self.CLUBLOG_XML_DOWNLOAD_LOCATION = None
self.CLUBLOG_API_AVAILABLE = None
self.CLUBLOG_CTY_XML_CACHE = None
self.CLUBLOG_API_KEY = None
self.QRZ_CALLSIGN_DATA_CACHE = None
self.LOOKUP_LIB_QRZ = None
self.QRZ_AVAILABLE = None
self.HAMQTH_AVAILABLE = None
self.HAMQTH_CALLSIGN_DATA_CACHE = None
self.HAMQTH_BASE_URL = "https://www.hamqth.com/xml.php"
# HamQTH session keys expire after an hour. Rather than working out how much time has passed manually, we cheat
# and cache the HTTP response for 55 minutes, so when the login URL is queried within 55 minutes of the previous
# time, you just get the cached response.
self.HAMQTH_SESSION_LOOKUP_CACHE = CachedSession("cache/hamqth_session_cache",
expire_after=timedelta(minutes=55))
self.CALL_INFO_BASIC = None
self.LOOKUP_LIB_BASIC = None
self.COUNTRY_FILES_CTY_PLIST_DOWNLOAD_LOCATION = None
self.DXCC_JSON_DOWNLOAD_LOCATION = None
self.DXCC_DATA = None
def start(self):
# Lookup helpers from pyhamtools. We use five (!) of these. The simplest is country-files.com, which downloads
# the data once on startup, and requires no login/key, but does not have the best coverage.
# If the user provides login details/API keys, we also set up helpers for QRZ.com, HamQTH, Clublog (live API
# request), and Clublog (XML download). The lookup functions iterate through these in a sensible order, looking
# for suitable data.
self.COUNTRY_FILES_CTY_PLIST_DOWNLOAD_LOCATION = "cache/cty.plist"
success = self.download_country_files_cty_plist()
if success:
self.LOOKUP_LIB_BASIC = LookupLib(lookuptype="countryfile",
filename=self.COUNTRY_FILES_CTY_PLIST_DOWNLOAD_LOCATION)
else:
self.LOOKUP_LIB_BASIC = LookupLib(lookuptype="countryfile")
self.CALL_INFO_BASIC = Callinfo(self.LOOKUP_LIB_BASIC)
self.QRZ_AVAILABLE = config["qrz-username"] != "" and config["qrz-password"] != ""
if self.QRZ_AVAILABLE:
self.LOOKUP_LIB_QRZ = LookupLib(lookuptype="qrz", username=config["qrz-username"],
pwd=config["qrz-password"])
self.QRZ_CALLSIGN_DATA_CACHE = Cache('cache/qrz_callsign_lookup_cache')
self.HAMQTH_AVAILABLE = config["hamqth-username"] != "" and config["hamqth-password"] != ""
self.HAMQTH_CALLSIGN_DATA_CACHE = Cache('cache/hamqth_callsign_lookup_cache')
self.CLUBLOG_API_KEY = config["clublog-api-key"]
self.CLUBLOG_CTY_XML_CACHE = CachedSession("cache/clublog_cty_xml_cache", expire_after=timedelta(days=10))
self.CLUBLOG_API_AVAILABLE = self.CLUBLOG_API_KEY != ""
self.CLUBLOG_XML_DOWNLOAD_LOCATION = "cache/cty.xml"
if self.CLUBLOG_API_AVAILABLE:
self.LOOKUP_LIB_CLUBLOG_API = LookupLib(lookuptype="clublogapi", apikey=self.CLUBLOG_API_KEY)
success = self.download_clublog_ctyxml()
self.CLUBLOG_XML_AVAILABLE = success
if success:
self.LOOKUP_LIB_CLUBLOG_XML = LookupLib(lookuptype="clublogxml",
filename=self.CLUBLOG_XML_DOWNLOAD_LOCATION)
self.CLUBLOG_CALLSIGN_DATA_CACHE = Cache('cache/clublog_callsign_lookup_cache')
# We also get a lookup of DXCC data from K0SWE to use for additional lookups of e.g. flags.
self.DXCC_JSON_DOWNLOAD_LOCATION = "cache/dxcc.json"
success = self.download_dxcc_json()
if success:
with open(self.DXCC_JSON_DOWNLOAD_LOCATION) as f:
tmp_dxcc_data = json.load(f)["dxcc"]
# Reformat as a map for faster lookup
self.DXCC_DATA = {}
for dxcc in tmp_dxcc_data:
self.DXCC_DATA[dxcc["entityCode"]] = dxcc
else:
logging.error("Could not download DXCC data, flags and similar data may be missing!")
# Download the cty.plist file from country-files.com on first startup. The pyhamtools lib can actually download and use
# this itself, but it's occasionally offline which causes it to throw an error. By downloading it separately, we can
# catch errors and handle them, falling back to a previous copy of the file in the cache, and we can use the
# requests_cache library to prevent re-downloading too quickly if the software keeps restarting.
def download_country_files_cty_plist(self):
try:
logging.info("Downloading Country-files.com cty.plist...")
response = SEMI_STATIC_URL_DATA_CACHE.get("https://www.country-files.com/cty/cty.plist",
headers=HTTP_HEADERS).text
with open(self.COUNTRY_FILES_CTY_PLIST_DOWNLOAD_LOCATION, "w") as f:
f.write(response)
f.flush()
return True
except Exception as e:
logging.error("Exception when downloading Clublog cty.xml", e)
return False
# Download the dxcc.json file on first startup.
def download_dxcc_json(self):
try:
logging.info("Downloading dxcc.json...")
response = SEMI_STATIC_URL_DATA_CACHE.get("https://raw.githubusercontent.com/k0swe/dxcc-json/refs/heads/main/dxcc.json",
headers=HTTP_HEADERS).text
with open(self.DXCC_JSON_DOWNLOAD_LOCATION, "w") as f:
f.write(response)
f.flush()
return True
except Exception as e:
logging.error("Exception when downloading dxcc.json", e)
return False
# Download the cty.xml (gzipped) file from Clublog on first startup, so we can use it in preference to querying the
# database live if possible.
def download_clublog_ctyxml(self):
try:
logging.info("Downloading Clublog cty.xml...")
response = self.CLUBLOG_CTY_XML_CACHE.get("https://cdn.clublog.org/cty.php?api=" + self.CLUBLOG_API_KEY,
headers=HTTP_HEADERS)
open(self.CLUBLOG_XML_DOWNLOAD_LOCATION + ".gz", 'wb').write(response.content)
with gzip.open(self.CLUBLOG_XML_DOWNLOAD_LOCATION + ".gz", "rb") as uncompressed:
file_content = uncompressed.read()
with open(self.CLUBLOG_XML_DOWNLOAD_LOCATION, "wb") as f:
f.write(file_content)
f.flush()
return True
except Exception as e:
logging.error("Exception when downloading Clublog cty.xml", e)
return False
# Infer a mode from the comment
def infer_mode_from_comment(self, comment):
for mode in ALL_MODES:
if mode in comment.upper():
return mode
return None
# Infer a "mode family" from a mode.
def infer_mode_type_from_mode(self, mode):
if mode.upper() in CW_MODES:
return "CW"
elif mode.upper() in PHONE_MODES:
return "PHONE"
elif mode.upper() in DATA_MODES:
return "DATA"
else:
if mode.upper() != "OTHER":
logging.warn("Found an unrecognised mode: " + mode + ". Developer should categorise this.")
return None
# Infer a band from a frequency in Hz
def infer_band_from_freq(self, freq):
for b in BANDS:
if b.start_freq <= freq <= b.end_freq:
return b
return UNKNOWN_BAND
# Infer a country name from a callsign
def infer_country_from_callsign(self, call):
try:
# Start with the basic country-files.com-based decoder.
country = self.CALL_INFO_BASIC.get_country_name(call)
except (KeyError, ValueError) as e:
country = None
# Couldn't get anything from basic call info database, try QRZ.com
if not country:
qrz_data = self.get_qrz_data_for_callsign(call)
if qrz_data and "country" in qrz_data:
country = qrz_data["country"]
# Couldn't get anything from QRZ.com database, try HamQTH
if not country:
hamqth_data = self.get_hamqth_data_for_callsign(call)
if hamqth_data and "country" in hamqth_data:
country = hamqth_data["country"]
# Couldn't get anything from HamQTH database, try Clublog data
if not country:
clublog_data = self.get_clublog_xml_data_for_callsign(call)
if clublog_data and "Name" in clublog_data:
country = clublog_data["Name"]
if not country:
clublog_data = self.get_clublog_api_data_for_callsign(call)
if clublog_data and "Name" in clublog_data:
country = clublog_data["Name"]
# Couldn't get anything from Clublog database, try DXCC data
if not country:
dxcc_data = self.get_dxcc_data_for_callsign(call)
if dxcc_data and "name" in dxcc_data:
country = dxcc_data["name"]
return country
# Infer a DXCC ID from a callsign
def infer_dxcc_id_from_callsign(self, call):
try:
# Start with the basic country-files.com-based decoder.
dxcc = self.CALL_INFO_BASIC.get_adif_id(call)
except (KeyError, ValueError) as e:
dxcc = None
# Couldn't get anything from basic call info database, try QRZ.com
if not dxcc:
qrz_data = self.get_qrz_data_for_callsign(call)
if qrz_data and "adif" in qrz_data:
dxcc = qrz_data["adif"]
# Couldn't get anything from QRZ.com database, try HamQTH
if not dxcc:
hamqth_data = self.get_hamqth_data_for_callsign(call)
if hamqth_data and "adif" in hamqth_data:
dxcc = hamqth_data["adif"]
# Couldn't get anything from HamQTH database, try Clublog data
if not dxcc:
clublog_data = self.get_clublog_xml_data_for_callsign(call)
if clublog_data and "DXCC" in clublog_data:
dxcc = clublog_data["DXCC"]
if not dxcc:
clublog_data = self.get_clublog_api_data_for_callsign(call)
if clublog_data and "DXCC" in clublog_data:
dxcc = clublog_data["DXCC"]
# Couldn't get anything from Clublog database, try DXCC data
if not dxcc:
dxcc_data = self.get_dxcc_data_for_callsign(call)
if dxcc_data and "entityCode" in dxcc_data:
dxcc = dxcc_data["entityCode"]
return dxcc
# Infer a continent shortcode from a callsign
def infer_continent_from_callsign(self, call):
try:
# Start with the basic country-files.com-based decoder.
continent = self.CALL_INFO_BASIC.get_continent(call)
except (KeyError, ValueError) as e:
continent = None
# Couldn't get anything from basic call info database, try HamQTH
if not continent:
hamqth_data = self.get_hamqth_data_for_callsign(call)
if hamqth_data and "continent" in hamqth_data:
country = hamqth_data["continent"]
# Couldn't get anything from HamQTH database, try Clublog data
if not continent:
clublog_data = self.get_clublog_xml_data_for_callsign(call)
if clublog_data and "Continent" in clublog_data:
continent = clublog_data["Continent"]
if not continent:
clublog_data = self.get_clublog_api_data_for_callsign(call)
if clublog_data and "Continent" in clublog_data:
continent = clublog_data["Continent"]
# Couldn't get anything from Clublog database, try DXCC data
if not continent:
dxcc_data = self.get_dxcc_data_for_callsign(call)
# Some DXCCs are in two continents, if so don't use the continent data as we can't be sure
if dxcc_data and "continent" in dxcc_data and len(dxcc_data["continent"]) == 1:
continent = dxcc_data["continent"][0]
return continent
# Infer a CQ zone from a callsign
def infer_cq_zone_from_callsign(self, call):
try:
# Start with the basic country-files.com-based decoder.
cqz = self.CALL_INFO_BASIC.get_cqz(call)
except (KeyError, ValueError) as e:
cqz = None
# Couldn't get anything from basic call info database, try QRZ.com
if not cqz:
qrz_data = self.get_qrz_data_for_callsign(call)
if qrz_data and "cqz" in qrz_data:
cqz = qrz_data["cqz"]
# Couldn't get anything from QRZ.com database, try HamQTH
if not cqz:
hamqth_data = self.get_hamqth_data_for_callsign(call)
if hamqth_data and "cq" in hamqth_data:
cqz = hamqth_data["cq"]
# Couldn't get anything from HamQTH database, try Clublog data
if not cqz:
clublog_data = self.get_clublog_xml_data_for_callsign(call)
if clublog_data and "CQZ" in clublog_data:
cqz = clublog_data["CQZ"]
if not cqz:
clublog_data = self.get_clublog_api_data_for_callsign(call)
if clublog_data and "CQZ" in clublog_data:
cqz = clublog_data["CQZ"]
# Couldn't get anything from Clublog database, try DXCC data
if not cqz:
dxcc_data = self.get_dxcc_data_for_callsign(call)
# Some DXCCs are in multiple zones, if so don't use the zone data as we can't be sure
if dxcc_data and "cq" in dxcc_data and len(dxcc_data["cq"]) == 1:
cqz = dxcc_data["cq"][0]
return cqz
# Infer a ITU zone from a callsign
def infer_itu_zone_from_callsign(self, call):
try:
# Start with the basic country-files.com-based decoder.
ituz = self.CALL_INFO_BASIC.get_ituz(call)
except (KeyError, ValueError) as e:
ituz = None
# Couldn't get anything from basic call info database, try QRZ.com
if not ituz:
qrz_data = self.get_qrz_data_for_callsign(call)
if qrz_data and "ituz" in qrz_data:
ituz = qrz_data["ituz"]
# Couldn't get anything from QRZ.com database, try HamQTH
if not ituz:
hamqth_data = self.get_hamqth_data_for_callsign(call)
if hamqth_data and "itu" in hamqth_data:
ituz = hamqth_data["itu"]
# Couldn't get anything from HamQTH database, Clublog doesn't provide this, so try DXCC data
if not ituz:
dxcc_data = self.get_dxcc_data_for_callsign(call)
# Some DXCCs are in multiple zones, if so don't use the zone data as we can't be sure
if dxcc_data and "itu" in dxcc_data and len(dxcc_data["itu"]) == 1:
ituz = dxcc_data["itu"]
return ituz
# Get an emoji flag for a given DXCC entity ID
def get_flag_for_dxcc(self, dxcc):
return self.DXCC_DATA[dxcc]["flag"] if dxcc in self.DXCC_DATA else None
# Infer an operator name from a callsign (requires QRZ.com/HamQTH)
def infer_name_from_callsign_online_lookup(self, call):
data = self.get_qrz_data_for_callsign(call)
if data and "fname" in data:
name = data["fname"]
if "name" in data:
name = name + " " + data["name"]
return name
data = self.get_hamqth_data_for_callsign(call)
if data and "nick" in data:
return data["nick"]
else:
return None
# Infer a latitude and longitude from a callsign (requires QRZ.com/HamQTH)
# Coordinates that look default are rejected (apologies if your position really is 0,0, enjoy your voyage)
def infer_latlon_from_callsign_online_lookup(self, call):
data = self.get_qrz_data_for_callsign(call)
if data and "latitude" in data and "longitude" in data and (data["latitude"] != 0 or data["longitude"] != 0):
return [data["latitude"], data["longitude"]]
data = self.get_hamqth_data_for_callsign(call)
if data and "latitude" in data and "longitude" in data and (data["latitude"] != 0 or data["longitude"] != 0):
return [data["latitude"], data["longitude"]]
else:
return None
# Infer a grid locator from a callsign (requires QRZ.com/HamQTH).
# Grids that look default are rejected (apologies if your grid really is AA00aa, enjoy your research)
def infer_grid_from_callsign_online_lookup(self, call):
data = self.get_qrz_data_for_callsign(call)
if data and "locator" in data and data["locator"].upper() != "AA00" and data["locator"].upper() != "AA00AA" and data["locator"].upper() != "AA00AA00":
return data["locator"]
data = self.get_hamqth_data_for_callsign(call)
if data and "grid" in data and data["grid"].upper() != "AA00" and data["grid"].upper() != "AA00AA" and data["grid"].upper() != "AA00AA00":
return data["grid"]
else:
return None
# Infer a textual QTH from a callsign (requires QRZ.com/HamQTH)
def infer_qth_from_callsign_online_lookup(self, call):
data = self.get_qrz_data_for_callsign(call)
if data and "addr2" in data:
return data["addr2"]
data = self.get_hamqth_data_for_callsign(call)
if data and "qth" in data:
return data["qth"]
else:
return None
# Infer a latitude and longitude from a callsign (using DXCC, probably very inaccurate)
def infer_latlon_from_callsign_dxcc(self, call):
try:
data = self.CALL_INFO_BASIC.get_lat_long(call)
if data and "latitude" in data and "longitude" in data:
loc = [data["latitude"], data["longitude"]]
else:
loc = None
except KeyError:
loc = None
# Couldn't get anything from basic call info database, try Clublog data
if not loc:
data = self.get_clublog_xml_data_for_callsign(call)
if data and "Lat" in data and "Lon" in data:
loc = [data["Lat"], data["Lon"]]
if not loc:
data = self.get_clublog_api_data_for_callsign(call)
if data and "Lat" in data and "Lon" in data:
loc = [data["Lat"], data["Lon"]]
return loc
# Infer a grid locator from a callsign (using DXCC, probably very inaccurate)
def infer_grid_from_callsign_dxcc(self, call):
latlon = self.infer_latlon_from_callsign_dxcc(call)
return latlong_to_locator(latlon[0], latlon[1], 8)
# Infer a mode from the frequency (in Hz) according to the band plan. Just a guess really.
def infer_mode_from_frequency(self, freq):
try:
khz = freq / 1000.0
mode = freq_to_band(khz)["mode"]
# Some additional common digimode ranges in addition to what the 3rd-party freq_to_band function returns.
# This is mostly here just because freq_to_band is very specific about things like FT8 frequencies, and e.g.
# a spot at 7074.5 kHz will be indicated as LSB, even though it's clearly in the FT8 range. Future updates
# might include other common digimode centres of activity here, but this achieves the main goal of keeping
# large numbers of clearly-FT* spots off the list of people filtering out digimodes.
if (7074 <= khz < 7077) or (10136 <= khz < 10139) or (14074 <= khz < 14077) or (18100 <= khz < 18103) or (
21074 <= khz < 21077) or (24915 <= khz < 24918) or (28074 <= khz < 28077):
mode = "FT8"
if (7047.5 <= khz < 7050.5) or (10140 <= khz < 10143) or (14080 <= khz < 14083) or (
18104 <= khz < 18107) or (21140 <= khz < 21143) or (24919 <= khz < 24922) or (28180 <= khz < 28183):
mode = "FT4"
return mode
except KeyError:
return None
# Utility method to get QRZ.com data from cache if possible, if not get it from the API and cache it
def get_qrz_data_for_callsign(self, call):
# Fetch from cache if we can, otherwise fetch from the API and cache it
if call in self.QRZ_CALLSIGN_DATA_CACHE:
return self.QRZ_CALLSIGN_DATA_CACHE.get(call)
elif self.QRZ_AVAILABLE:
try:
data = self.LOOKUP_LIB_QRZ.lookup_callsign(callsign=call)
self.QRZ_CALLSIGN_DATA_CACHE.add(call, data, expire=604800) # 1 week in seconds
return data
except (KeyError, ValueError):
# QRZ had no info for the call, but maybe it had prefixes or suffixes. Try again with the base call.
try:
data = self.LOOKUP_LIB_QRZ.lookup_callsign(callsign=callinfo.Callinfo.get_homecall(call))
self.QRZ_CALLSIGN_DATA_CACHE.add(call, data, expire=604800) # 1 week in seconds
return data
except (KeyError, ValueError):
# QRZ had no info for the call, that's OK. Cache a None so we don't try to look this up again
self.QRZ_CALLSIGN_DATA_CACHE.add(call, None, expire=604800) # 1 week in seconds
return None
else:
return None
# Utility method to get HamQTH data from cache if possible, if not get it from the API and cache it
def get_hamqth_data_for_callsign(self, call):
# Fetch from cache if we can, otherwise fetch from the API and cache it
if call in self.HAMQTH_CALLSIGN_DATA_CACHE:
return self.HAMQTH_CALLSIGN_DATA_CACHE.get(call)
elif self.HAMQTH_AVAILABLE:
try:
# First we need to log in and get a session token.
session_data = self.HAMQTH_SESSION_LOOKUP_CACHE.get(
self.HAMQTH_BASE_URL + "?u=" + urllib.parse.quote_plus(config["hamqth-username"]) +
"&p=" + urllib.parse.quote_plus(config["hamqth-password"]), headers=HTTP_HEADERS).content
dict_data = xmltodict.parse(session_data)
if "session_id" in dict_data["HamQTH"]["session"]:
session_id = dict_data["HamQTH"]["session"]["session_id"]
# Now look up the actual data.
try:
lookup_data = SEMI_STATIC_URL_DATA_CACHE.get(
self.HAMQTH_BASE_URL + "?id=" + session_id + "&callsign=" + urllib.parse.quote_plus(
call) + "&prg=" + HAMQTH_PRG, headers=HTTP_HEADERS).content
data = xmltodict.parse(lookup_data)["HamQTH"]["search"]
self.HAMQTH_CALLSIGN_DATA_CACHE.add(call, data, expire=604800) # 1 week in seconds
return data
except (KeyError, ValueError):
# HamQTH had no info for the call, but maybe it had prefixes or suffixes. Try again with the base call.
try:
lookup_data = SEMI_STATIC_URL_DATA_CACHE.get(
self.HAMQTH_BASE_URL + "?id=" + session_id + "&callsign=" + urllib.parse.quote_plus(
callinfo.Callinfo.get_homecall(call)) + "&prg=" + HAMQTH_PRG, headers=HTTP_HEADERS).content
data = xmltodict.parse(lookup_data)["HamQTH"]["search"]
self.HAMQTH_CALLSIGN_DATA_CACHE.add(call, data, expire=604800) # 1 week in seconds
return data
except (KeyError, ValueError):
# HamQTH had no info for the call, that's OK. Cache a None so we don't try to look this up again
self.HAMQTH_CALLSIGN_DATA_CACHE.add(call, None, expire=604800) # 1 week in seconds
return None
else:
logging.warn("HamQTH login details incorrect, failed to look up with HamQTH.")
except:
logging.error("Exception when looking up HamQTH data")
return None
# Utility method to get Clublog API data from cache if possible, if not get it from the API and cache it
def get_clublog_api_data_for_callsign(self, call):
# Fetch from cache if we can, otherwise fetch from the API and cache it
if call in self.CLUBLOG_CALLSIGN_DATA_CACHE:
return self.CLUBLOG_CALLSIGN_DATA_CACHE.get(call)
elif self.CLUBLOG_API_AVAILABLE:
try:
data = self.LOOKUP_LIB_CLUBLOG_API.lookup_callsign(callsign=call)
self.CLUBLOG_CALLSIGN_DATA_CACHE.add(call, data, expire=604800) # 1 week in seconds
return data
except (KeyError, ValueError):
# Clublog had no info for the call, but maybe it had prefixes or suffixes. Try again with the base call.
try:
data = self.LOOKUP_LIB_CLUBLOG_API.lookup_callsign(callsign=callinfo.Callinfo.get_homecall(call))
self.CLUBLOG_CALLSIGN_DATA_CACHE.add(call, data, expire=604800) # 1 week in seconds
return data
except (KeyError, ValueError):
# Clublog had no info for the call, that's OK. Cache a None so we don't try to look this up again
self.CLUBLOG_CALLSIGN_DATA_CACHE.add(call, None, expire=604800) # 1 week in seconds
return None
except APIKeyMissingError:
# User API key was wrong, warn
logging.error("Could not look up via Clublog API, key " + self.CLUBLOG_API_KEY + " was rejected.")
return None
else:
return None
# Utility method to get Clublog XML data from file
def get_clublog_xml_data_for_callsign(self, call):
if self.CLUBLOG_XML_AVAILABLE:
try:
data = self.LOOKUP_LIB_CLUBLOG_XML.lookup_callsign(callsign=call)
return data
except (KeyError, ValueError):
# Clublog had no info for the call, that's OK. Cache a None so we don't try to look this up again
self.CLUBLOG_CALLSIGN_DATA_CACHE.add(call, None, expire=604800) # 1 week in seconds
return None
else:
return None
# Utility method to get generic DXCC data from our lookup table, if we can find it
def get_dxcc_data_for_callsign(self, call):
for entry in self.DXCC_DATA.values():
if re.match(entry["prefixRegex"], call):
return entry
return None
# Shutdown method to close down any caches neatly.
def stop(self):
self.QRZ_CALLSIGN_DATA_CACHE.close()
self.CLUBLOG_CALLSIGN_DATA_CACHE.close()
# Singleton object
lookup_helper = LookupHelper()
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