Code review fixes

core/data_store.py

@@ -106,6 +106,7 @@ class DataStore:
         and testing the callsign every time is expensive. So instead we build a separate in-memory lookup of compiled
         regex against DXCC entity code, as a list of tuples we can iterate through."""
 
+        self.dxcc_lookup_by_call_regex = []
         for entry in [DATA_STORE.dxcc_data[key] for key in DATA_STORE.dxcc_data]:
             self.dxcc_lookup_by_call_regex.append((re.compile(entry["prefixRegex"]), entry["entityCode"]))
 

core/live_data_cache.py

@@ -22,6 +22,7 @@ class LiveDataCache:
         self._listeners_lock = threading.Lock()
         self._snapshot_dir = snapshot_dir
         self._disk_cache = diskcache.Cache(str(snapshot_dir))
+        self._stop_event = threading.Event()
         self._load_snapshot()
         self._start_periodic_snapshot(snapshot_interval_sec)
 
@@ -89,13 +90,13 @@ class LiveDataCache:
 
     def _start_periodic_snapshot(self, interval):
         def loop():
-            while True:
-                time.sleep(interval)
+            while not self._stop_event.wait(timeout=interval):
                 self.save_snapshot()
 
-        t = threading.Thread(target=loop, name=f"LiveDataCache-Snapshot-{self._snapshot_dir}")
+        t = threading.Thread(target=loop, name=f"LiveDataCache-Snapshot-{self._snapshot_dir}", daemon=True)
         t.start()
 
     def close(self):
+        self._stop_event.set()
         self.save_snapshot()
         self._disk_cache.close()

core/sig_lookup_helper.py

@@ -24,7 +24,7 @@ def get_sig_ref_info(sig_name, ref_id):
 
     # Sometimes we allow spaces instead of dashes in references due to common usage that way, but official reference
     # lists never do, so convert them here.
-    ref_id.replace(" ", "-")
+    ref_id = ref_id.replace(" ", "-")
 
     # Prepare the object to be returned
     sig_ref = SIGRef(sig=sig_name, id=ref_id)
@@ -117,9 +117,9 @@ def get_sig_ref_info(sig_name, ref_id):
         try:
             lookup_data = DATA_STORE.sigrefs.get(key) if key in DATA_STORE.sigrefs else None
             if lookup_data:
-                for key, value in lookup_data.__dict__.items():
-                    if value is not None and sig_ref.__dict__.get(key) is None:
-                        sig_ref.__dict__[key] = value
+                for attr, value in lookup_data.__dict__.items():
+                    if value is not None and sig_ref.__dict__.get(attr) is None:
+                        sig_ref.__dict__[attr] = value
 
             else:
                 # Maybe a super new reference we don't know about yet, but more likely a typo or a test reference,

core/url_data_cache.py

@@ -14,14 +14,13 @@ class URLDataCache(CachedSession):
     used across multiple threads, though note that URL lookups will block each other this way, so it is still better to
     create one of these objects per thread if possible."""
 
-    _lock = threading.Lock()
-
     def __init__(self, name):
         super().__init__(
             f"{CACHE_DIR}urls/{name}",
             expire_after=timedelta(days=1),
             allowable_codes=(200, 400, 401, 403, 404),
         )
+        self._lock = threading.Lock()
 
     def get(self, *args, **kwargs):
         with self._lock: