Refactor of caching & data storage part 9 #118

providers/sigrefdata/iota.py

@@ -0,0 +1,41 @@
+import logging
+
+from pyhamtools.locator import latlong_to_locator
+
+from data.sig_ref import SIGRef
+from providers.sigrefdata.file_download_sig_ref_data_provider import FileDownloadSIGRefDataProvider
+
+
+class IOTA(FileDownloadSIGRefDataProvider):
+    """SIG ref data provider for Islands on the Air"""
+
+    POLL_INTERVAL_DAYS = 365
+    SIG = "IOTA"
+    DATA_URL = "https://www.iota-world.org/islands-on-the-air/downloads/download-file.html?path=groups.json"
+
+    def __init__(self, provider_config):
+        super().__init__(self.SIG, provider_config, self.DATA_URL, self.POLL_INTERVAL_DAYS)
+
+    def _http_response_to_data(self, http_response):
+        new_data = []
+        data = http_response.json()
+        if isinstance(data, list):
+            for ref in data:
+                ref_id = ref["refno"]
+                latitude = float(ref["latitude_min"]) + float(ref["latitude_max"]) / 2.0
+                longitude = float(ref["longitude_min"]) + float(ref["longitude_max"]) / 2.0
+                grid = None
+                try:
+                    grid = latlong_to_locator(latitude, longitude, 6)
+                except ValueError:
+                    logging.debug(f"Error converting lat/lon to locator for an IOTA reference %f %f", latitude, longitude)
+
+                new_data.append(SIGRef(sig=self.SIG, id=ref_id, name=ref["name"],
+                                          grid=grid, latitude=latitude, longitude=longitude))
+
+                # Bail out if a stop has been requested, i.e. the program is shutting down - no need to parse the rest
+                # of the data in this case
+                if self._stop_event.is_set():
+                    break
+
+        return new_data