Refactor of caching & data storage part 5 #118

.idea/encodings.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="Encoding">
+    <file url="file://$PROJECT_DIR$/datafiles/MUNICIPIOS.csv" charset="ISO-8859-1" />
+  </component>
+</project>

.idea/spothole.iml

@@ -2,8 +2,9 @@
 <module type="PYTHON_MODULE" version="4">
   <component name="NewModuleRootManager">
     <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$" isTestSource="false" />
       <excludeFolder url="file://$MODULE_DIR$/.venv" />
-      <excludeFolder url="file://$MODULE_DIR$/webassets/vendor" />
+      <excludeFolder url="file://$MODULE_DIR$/static/vendor" />
     </content>
     <orderEntry type="jdk" jdkName="Python 3.13 virtualenv at ~/code/spothole/.venv" jdkType="Python SDK" />
     <orderEntry type="sourceFolder" forTests="false" />

README.md

@@ -1,4 +1,4 @@
-# ![Spothole](/webassets/img/logo.png)
+# ![Spothole](/static/img/logo.png)
 
 Spothole is a utility to aggregate "spots" from amateur radio DX clusters and xOTA spotting sites, and provide an open
 JSON API as well as a website to browse the data.
@@ -19,6 +19,8 @@ Supported data sources include DX Clusters, the Reverse Beacon Network (RBN), th
 SOTA, WWFF, GMA, WWBOTA, HEMA, Parks 'n' Peaks, ZLOTA, WOTA, BOTA, LLOTA, WWTOTA, Tiles on the Air, the UK Packet
 Repeater Network, NG3K, and any site based on the xOTA software by nischu.
 
+Additional Special Interest Groups (SIGs) without their own specific data source include WAB, WAI and DME.
+
 ![Screenshot](/images/screenshot2.png)
 
 ![Screenshot](/images/screenshot3.png)
@@ -87,15 +89,15 @@ callsign and park data.
 
 Various approaches exist to writing your own client, but in general:
 
-* Refer to the API docs. These are built on an OpenAPI definition file (`/webassets/apidocs/openapi.yml`), which you can
+* Refer to the API docs. These are built on an OpenAPI definition file (`/static/apidocs/openapi.yml`), which you can
   automatically use to generate a client skeleton using various software.
 * Call the main "spots" or "alerts" API endpoints to get the data you want. For example, your app could call
   `https://spothole.app/api/v1/spots` once every few minutes. Apply filters if necessary.
 * Call the "options" API to get an idea of which bands, modes etc. the server knows about. You might want to do that
   first before calling the spots/alerts APIs, to allow you to populate your filters correctly.
-* Refer to the provided HTML/JS interface for a reference on different approaches. For example, the "map" and "bands"
+* Refer to the provided HTML/JS interface for a reference on different approaches. For example, the "alerts"/"upcoming"
-  pages simply query the main spot API on a timer, whereas the main/spots page combines this approach with using the
+  page simply query the main spot API on a timer, whereas the spots, map and bands pages combine this approach with
-  Server-Sent Events (SSE) endpoint to update live.
+  using the Server-Sent Events (SSE) endpoint to update live.
 * Let me know if you get stuck, I'm happy to help.
 
 Please don't hammer the API with an unnecessarily high request rate. For example, Spothole only queries the POTA API
@@ -316,33 +318,49 @@ To set up nginx as a reverse proxy that sits in front of Spothole, first ensure
 
 Create a file at `/etc/nginx/sites-available/` called `spothole`. Give it the following contents, replacing
 `spothole.app` with the domain name on which you want to run Spothole. If you changed the port on which Spothole runs,
-update that on the "proxy_pass" line too.
+update that on the "proxy_pass" line, and if you installed Spothole somewhere other than `/home/spothole/spothole`,
+adjust the alias location for serving static files.
+
+(The latter section, configuring the nginx server to serve static files directly, improves efficiency because it saves
+Spothole itself from serving JS, CSS etc. files. If you can't do this for some reason, e.g. your nginx and spothole are
+on different computers, you can omit the `location /static/ {}` block.)
 
 ```nginx
 server {
     server_name spothole.app;
 
+    # Global proxy settings
+    proxy_http_version 1.1;
+    proxy_set_header Connection "";
+    proxy_connect_timeout 10s;
+    proxy_buffering on;
+    
+    # Pass on IP address and host information to Spothole, in case logging this information is required
+    proxy_set_header X-Real-IP $remote_addr;
+    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+    proxy_set_header Host $http_host;
+    proxy_set_header X-Forwarded-Proto $scheme;
+
     # Wellknown area for Lets Encrypt
     location /.well-known/ {
         alias /var/www/html/.well-known/;
     }
 
+    # Load static assets directly from the Spothole static directory
+    location /static/ {
+        alias /home/spothole/spothole/static/;
+        expires 1h;
+        add_header Cache-Control "public, max-age=3600, must-revalidate";
+    }
+    
     # SSE endpoints
-    location ~ ^/api/v1/(spots|alerts)/stream {
+    location ~ ^/api/v1/(spots|alerts)/stream/? {
         proxy_pass http://127.0.0.1:8080;
         
-        # Allow keep-alive
+        # Remove buffering, remove caching, add suitable timeouts for SSE API calls
-        proxy_http_version 1.1;
-        proxy_set_header Connection "";
-        
-        # Set correct content type for SSE API calls
-        add_header Content-Type text/event-stream always;
-        
-        # Set remove buffering, remove caching, add suitable timeouts for SSE API calls
         proxy_buffering off;
         proxy_cache off;
         proxy_read_timeout 24h;
-        proxy_connect_timeout 10s;
         proxy_send_timeout 24h;
         proxy_set_header X-Accel-Buffering no;
         add_header Cache-Control no-store always;
@@ -350,59 +368,28 @@ server {
         # Allow cross-origin requests to API
         proxy_hide_header Access-Control-Allow-Origin;
         add_header Access-Control-Allow-Origin * always; 
-        
-        # Pass on IP address and host information to Spothole, in case logging this information is required
-        proxy_set_header X-Real-IP $remote_addr;
-        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
-        proxy_set_header Host $http_host;
-        proxy_set_header X-Forwarded-Proto $scheme;
     }
 
     # Other API endpoints
     location /api/ {
         proxy_pass http://127.0.0.1:8080;
         
-        # Allow keep-alive
+        # Remove buffering, remove caching, add suitable timeouts for API calls
-        proxy_http_version 1.1;
+        proxy_buffering off;
-        proxy_set_header Connection "";
-        
-        # Set up buffering, remove caching, add suitable timeouts for API calls
-        proxy_buffering on;
         proxy_cache off;
         proxy_read_timeout 30s;
-        proxy_connect_timeout 10s;
         add_header Cache-Control no-store always;
         
         # Allow cross-origin requests to API
         proxy_hide_header Access-Control-Allow-Origin;
         add_header Access-Control-Allow-Origin * always;
-        
-        # Pass on IP address and host information to Spothole, in case logging this information is required
-        proxy_set_header X-Real-IP $remote_addr;
-        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
-        proxy_set_header Host $http_host;
-        proxy_set_header X-Forwarded-Proto $scheme;
     }
 
-    # Static assets
+    # Templated pages
     location / {
         proxy_pass http://127.0.0.1:8080;
-        
-        # Allow keep-alive
-        proxy_http_version 1.1;
-        proxy_set_header Connection "";
-        
-        # Set up buffering and caching, add suitable timeouts for static asset requests
-        proxy_buffering on;
         proxy_read_timeout 30s;
-        proxy_connect_timeout 10s;
+        add_header Cache-Control "no-cache, must-revalidate" always;
-        add_header Cache-Control "public, max-age=3600, must-revalidate" always;
-        
-        # Pass on IP address and host information to Spothole, in case logging this information is required
-        proxy_set_header X-Real-IP $remote_addr;
-        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
-        proxy_set_header Host $http_host;
-        proxy_set_header X-Forwarded-Proto $scheme;
     }
 }
 ```
@@ -465,12 +452,12 @@ To navigate your way around the source code, this list may help.
 
 *HTML/JS/CSS front-end code*
 
-* `/webassets` - Root for static files served by the web server
+* `/static` - Root for static files served by the web server. These are all served from a path starting `/static/`.
-* `/webassets/apidocs` - Contains the OpenAPI spec (`openapi.yml`)
+* `/static/apidocs` - Contains the OpenAPI spec (`openapi.yml`)
-* `/webassets/css` - CSS files used by the web front-end
+* `/static/css` - CSS files used by the web front-end
-* `/webassets/img` - image files used by the web front-end
+* `/static/img` - image files used by the web front-end
-* `/webassets/js` - JavaScript used by the web front-end
+* `/static/js` - JavaScript used by the web front-end
-* `/webassets/vendor` - Third-party libraries (CSS, JS, fonts and images)
+* `/static/vendor` - Third-party libraries (CSS, JS, fonts and images)
 
 *Miscellaneous*
 
@@ -515,17 +502,21 @@ The same approach as above is also used for alert providers.
 As well as being my work, I have also gratefully received feature patches from Steven, M1SDH.
 
 The project contains GeoJSON files for CQ and ITU zones, in the `/datafiles/` directory. These are MIT-licenced and, to
-my knowledge, created by HA8TKS for his CQ and ITU zone layers for Leaflet.
+my knowledge, created by HA8TKS for his CQ and ITU zone layers for Leaflet. `/datafiles` also contains a
+`MUNICIPIOS.csv` file, from the "Nomenclátor Geográfico de Municipios y Entidades de Población" data set sourced from
+[el Centro Nacional de Información Geográfica](https://centrodedescargas.cnig.es/CentroDescargas/home).
+`didbase-stations.csv` and the TOTA CSV files were created by me based on publicly available data from GIRO and from
+maps of conference centres.
 
 The project contains a set of flag icons generated using the "Noto Color Emoji" font on a Debian system, in the
-`/webassets/img/flags/` directory.
+`/static/img/flags/` directory.
 
 The software uses a number of Python libraries as listed in `requirements.txt`, and a number of JavaScript libraries.
 This project would not have been possible without these libraries, so many thanks to their developers.
 
 ### Third Party Libraries
 
-A number of third-party libraries are self-hosted in the `/webassets/vendor/` directory. These files are subject to
+A number of third-party libraries are self-hosted in the `/static/vendor/` directory. These files are subject to
 their own licences and are not covered by the overall licence declared in the `LICENSE` file.
 
 Particular thanks go to country-files.com for providing country lookup data for amateur radio, to K0SWE

alertproviders/alert_provider.py

@@ -2,27 +2,20 @@ from datetime import datetime
 
 import pytz
 
-from core.config import MAX_ALERT_AGE
+from core.data_store import DATA_STORE
 
 
 class AlertProvider:
     """Generic alert provider class. Subclasses of this query the individual APIs for alerts."""
 
-    def __init__(self, provider_config):
+    def __init__(self, name, provider_config):
         """Constructor"""
 
-        self.name = provider_config["name"]
+        self.name = name
         self.enabled = provider_config["enabled"]
         self.last_update_time = datetime.min.replace(tzinfo=pytz.UTC)
         self.status = "Not Started" if self.enabled else "Disabled"
-        self._alerts = None
+        self._alerts = DATA_STORE.alerts
-        self._web_server = None
-
-    def setup(self, alerts, web_server):
-        """Set up the provider, e.g. giving it the alert list to work from"""
-
-        self._alerts = alerts
-        self._web_server = web_server
 
     def start(self):
         """Start the provider. This should return immediately after spawning threads to access the remote resources"""
@@ -44,10 +37,7 @@ class AlertProvider:
 
     def _add_alert(self, alert):
         if not alert.expired():
-            self._alerts.add(alert.id, alert, expire=MAX_ALERT_AGE)
+            self._alerts.set(alert.id, alert)
-            # Ping the web server in case we have any SSE connections that need to see this immediately
-            if self._web_server:
-                self._web_server.notify_new_alert(alert)
 
     def stop(self):
         """Stop any threads and prepare for application shutdown"""

alertproviders/bota.py

@@ -15,12 +15,12 @@ class BOTA(HTTPAlertProvider):
     ALERTS_URL = "https://www.beachesontheair.com/"
 
     def __init__(self, provider_config):
-        super().__init__(provider_config, self.ALERTS_URL, self.POLL_INTERVAL_SEC)
+        super().__init__("BOTA", provider_config, self.ALERTS_URL, self.POLL_INTERVAL_SEC)
 
     def _http_response_to_alerts(self, http_response):
         new_alerts = []
         # Find the table of upcoming alerts
-        bs = BeautifulSoup(http_response.content.decode(), features="lxml")
+        bs = BeautifulSoup(http_response.content.decode("utf-8-sig"), features="lxml")
         if not bs.body:
             return new_alerts
         div = bs.body.find('div', attrs={'class': 'view-activations-public'})

alertproviders/http_alert_provider.py

@@ -4,6 +4,7 @@ from threading import Thread, Event
 
 import pytz
 import requests
+from requests.exceptions import ConnectionError, ReadTimeout, ConnectTimeout
 
 from alertproviders.alert_provider import AlertProvider
 from core.constants import HTTP_HEADERS
@@ -13,8 +14,8 @@ class HTTPAlertProvider(AlertProvider):
     """Generic alert provider class for providers that request data via HTTP(S). Just for convenience to avoid code
     duplication. Subclasses of this query the individual APIs for data."""
 
-    def __init__(self, provider_config, url, poll_interval):
+    def __init__(self, name, provider_config, url, poll_interval):
-        super().__init__(provider_config)
+        super().__init__(name, provider_config)
         self._url = url
         self._poll_interval = poll_interval
         self._thread = None
@@ -41,6 +42,8 @@ class HTTPAlertProvider(AlertProvider):
             # Request data from API
             logging.debug("Polling " + self.name + " alert API...")
             http_response = requests.get(self._url, headers=HTTP_HEADERS, timeout=(5, 30))
+            # Check response code was good
+            if http_response.ok:
                 # Pass off to the subclass for processing
                 new_alerts = self._http_response_to_alerts(http_response)
                 # Submit the new alerts for processing. There might not be any alerts for the less popular programs.
@@ -50,7 +53,14 @@ class HTTPAlertProvider(AlertProvider):
                 self.status = "OK"
                 self.last_update_time = datetime.now(pytz.UTC)
                 logging.debug("Received data from " + self.name + " alert API.")
+            else:
+                self.status = "Error"
+                logging.warning(f"HTTP {http_response.status_code} when calling {self.name} alerts API.")
 
+        except ConnectionError:
+            logging.warning(f"Connection error when accessing {self.name} alerts API.")
+        except (ConnectTimeout, ReadTimeout):
+            logging.warning(f"Timeout when accessing {self.name} alerts API.")
         except Exception:
             self.status = "Error"
             logging.exception("Exception in HTTP JSON Alert Provider (" + self.name + ")")

alertproviders/ng3k.py

@@ -18,11 +18,11 @@ class NG3K(HTTPAlertProvider):
     AS_CALL_PATTERN = re.compile("as ([a-z0-9/]+)", re.IGNORECASE)
 
     def __init__(self, provider_config):
-        super().__init__(provider_config, self.ALERTS_URL, self.POLL_INTERVAL_SEC)
+        super().__init__("NG3K", provider_config, self.ALERTS_URL, self.POLL_INTERVAL_SEC)
 
     def _http_response_to_alerts(self, http_response):
         new_alerts = []
-        rss = cast(RSS, Parser.parse(http_response.content.decode()))
+        rss = cast(RSS, Parser.parse(http_response.content.decode("utf-8-sig")))
         # Iterate through source data
         for source_alert in rss.channel.items:
             # Deal with "the format"...

alertproviders/parksnpeaks.py

@@ -15,14 +15,14 @@ class ParksNPeaks(HTTPAlertProvider):
     ALERTS_URL = "https://parksnpeaks.org/api/ALERTS/"
 
     def __init__(self, provider_config):
-        super().__init__(provider_config, self.ALERTS_URL, self.POLL_INTERVAL_SEC)
+        super().__init__("ParksNPeaks", provider_config, self.ALERTS_URL, self.POLL_INTERVAL_SEC)
 
     def _http_response_to_alerts(self, http_response):
         new_alerts = []
         # Iterate through source data
         for source_alert in http_response.json():
             # Calculate some things
-            sig = source_alert["Class"]
+            sig = source_alert["Class"].upper()
             if " - " in source_alert["Location"]:
                 split = source_alert["Location"].split(" - ")
                 sig_ref = split[0]
@@ -50,7 +50,7 @@ class ParksNPeaks(HTTPAlertProvider):
                           is_dxpedition=False)
 
             # Log a warning for the developer if PnP gives us an unknown programme we've never seen before
-            if sig and sig not in ["POTA", "SOTA", "WWFF", "SiOTA", "ZLOTA", "KRMNPA", "LLOTA", "QRP"]:
+            if sig and sig not in ["POTA", "SOTA", "WWFF", "SIOTA", "ZLOTA", "KRMNPA", "LLOTA", "QRP"]:
                 logging.warning("PNP alert found with sig " + sig + ", developer needs to add support for this!")
 
             # If this is POTA, SOTA or WWFF data we already have it through other means, so ignore. Otherwise, add to

alertproviders/pota.py

@@ -14,7 +14,7 @@ class POTA(HTTPAlertProvider):
     ALERTS_URL = "https://api.pota.app/activation"
 
     def __init__(self, provider_config):
-        super().__init__(provider_config, self.ALERTS_URL, self.POLL_INTERVAL_SEC)
+        super().__init__("POTA", provider_config, self.ALERTS_URL, self.POLL_INTERVAL_SEC)
 
     def _http_response_to_alerts(self, http_response):
         new_alerts = []

alertproviders/sota.py

@@ -14,7 +14,7 @@ class SOTA(HTTPAlertProvider):
     ALERTS_URL = "https://api-db2.sota.org.uk/api/alerts/365/all/all"
 
     def __init__(self, provider_config):
-        super().__init__(provider_config, self.ALERTS_URL, self.POLL_INTERVAL_SEC)
+        super().__init__("SOTA", provider_config, self.ALERTS_URL, self.POLL_INTERVAL_SEC)
 
     def _http_response_to_alerts(self, http_response):
         new_alerts = []

alertproviders/wota.py

@@ -18,11 +18,11 @@ class WOTA(HTTPAlertProvider):
     RSS_DATE_TIME_FORMAT = "%a, %d %b %Y %H:%M:%S %z"
 
     def __init__(self, provider_config):
-        super().__init__(provider_config, self.ALERTS_URL, self.POLL_INTERVAL_SEC)
+        super().__init__("WOTA", provider_config, self.ALERTS_URL, self.POLL_INTERVAL_SEC)
 
     def _http_response_to_alerts(self, http_response):
         new_alerts = []
-        rss = cast(RSS, RSSParser.parse(http_response.content.decode()))
+        rss = cast(RSS, RSSParser.parse(http_response.content.decode("utf-8-sig")))
         # Iterate through source data
         for source_alert in rss.channel.items:
 

alertproviders/wwff.py

@@ -14,7 +14,7 @@ class WWFF(HTTPAlertProvider):
     ALERTS_URL = "https://spots.wwff.co/static/agendas.json"
 
     def __init__(self, provider_config):
-        super().__init__(provider_config, self.ALERTS_URL, self.POLL_INTERVAL_SEC)
+        super().__init__("WWFF", provider_config, self.ALERTS_URL, self.POLL_INTERVAL_SEC)
 
     def _http_response_to_alerts(self, http_response):
         new_alerts = []

config-example.yml

@@ -19,66 +19,55 @@ base-url: "http://localhost:8080"
 
 # Spot providers to use. This is an example set, tailor it to your liking by commenting and uncommenting.
 # RBN and APRS-IS are supported but have such a high data rate, you probably don't want them enabled.
-# Each provider needs a class, a name, and an enabled/disabled state. Some require more config such as hostnames/IP
+# Each provider needs a class and an enabled/disabled state. Some require more config such as hostnames/IP
 # addresses and ports. You can duplicate them if you like, e.g. to support several DX clusters. RBN uses two ports, 7000
 # for CW/RTTY and 7001 for FT8, so if you want both, you need two entries, as shown below.
 # Feel free to write your own provider classes! There are details in the README.
 spot-providers:
   - class: "POTA"
-    name: "POTA"
     enabled: true
 
   - class: "SOTA"
-    name: "SOTA"
     enabled: true
 
   - class: "WWFF"
-    name: "WWFF"
     enabled: true
 
   - class: "WWBOTA"
-    name: "WWBOTA"
     enabled: true
 
   - class: "GMA"
-    name: "GMA"
     enabled: true
     # GMA requires an API key to fetch spots. After creating an account on cqgma.org, email support and request one.
     api-key: ""
 
   - class: "HEMA"
-    name: "HEMA"
     enabled: true
 
   - class: "ParksNPeaks"
-    name: "ParksNPeaks"
     enabled: true
 
   - class: "ZLOTA"
-    name: "ZLOTA"
     enabled: true
 
   - class: "WOTA"
-    name: "WOTA"
     enabled: true
 
   - class: "LLOTA"
-    name: "LLOTA"
     enabled: true
 
-  - class: "WWTOTA"
+  - class: "Towers"
-    name: "WWTOTA"
     enabled: true
 
   - class: "Tiles"
-    name: "Tiles"
     enabled: true
 
   - class: "APRSIS"
-    name: "APRS-IS"
     enabled: false
 
   - class: "DXCluster"
+    # Clusters have a "name" property in case you want to say which cluster node the data is from, or connect to
+    # several clusters and name them separately.
     name: "HRD Cluster"
     enabled: true
     host: "hrd.wa9pie.net"
@@ -99,18 +88,12 @@ spot-providers:
     enabled: false
     host: "w3lpl.net"
     port: 7373
-    # Prompt the cluster node gives when asking for a callsign to log in. Varies between cluster node software.
     login_prompt: "Please enter your call:"
-    # Callsign Spothole will use to log into this cluster. Ensure the SSID (e.g. -99) is different to any personal
-    # connection you might make to this cluster node.
     login_callsign: "N0CALL-99"
-    # Whether to allow RBN spots that come via this cluster. If you don't want RBN spots or you are making a separate
-    # connection to RBN directly, leave this as False. If you want RBN spots from this cluster, set this to True. (Make
-    # sure you aren't also separately connecting to RBN directly, otherwise you may get duplicate spots.) Note that not
-    # all clusters sent RBN spots anyway.
     allow_rbn_spots: false
 
   - class: "RBN"
+  - # RBN sources have a "name" property in case you want to differentiate between the CW/RTTY and FT8 sources.
     name: "RBN CW/RTTY"
     enabled: false
     port: 7000
@@ -127,76 +110,129 @@ spot-providers:
     enabled-by-default-in-web-ui: false
 
   - class: "UKPacketNet"
-    name: "UK Packet Radio Net"
     enabled: false
     enabled-by-default-in-web-ui: false
 
   - class: "XOTA"
-    name: "39C3 TOTA"
+    # xOTA sources have a "name" property so you can define what programme it is for, since xOTA is generic software
+    # for running "something-on-the-air" programmes.
+    name: "C3 TOTA"
     enabled: false
     url: "wss://39c3.totawatch.de/api/spot/live"
-    # Fixed SIG for all spots from a provider & location CSV are currently only a feature for the "XOTA" provider,
+    # For the "XOTA" provider, a SIG must be set menually here because xOTA is a generic backend for xOTA
-    # the software found at https://github.com/nischu/xOTA/. This is because this is a generic backend for xOTA
+    # programmes and so different URLs potentially provide different programmes.
-    # programmes and so different URLs provide different programmes.
+    sig: "Toilets"
-    sig: "TOTA"
+    # For Toilets on the Air, we prefix the SIG references (T-01 etc) with some characters that define the conference:
-    locations-csv: "datafiles/39c3-tota.csv"
+    # C3, EH or HOPE - so we can look up the correct locations in our database, because each conference starts from T-01
+    # but refers to a toilet in a different building (or continent!)
+    sig-ref-prefix: "C3"
 
   - class: "XOTA"
     name: "EH23 TOTA"
     enabled: false
     url: "wss://eh23.totawatch.de/api/spot/live"
-    sig: "TOTA"
+    sig: "Toilets"
-    locations-csv: "datafiles/eh23-tota.csv"
+    sig-ref-prefix: "EH"
+
+  - class: "XOTA"
+    name: "HOPE26 TOTA"
+    enabled: false
+    url: "wss://hope-26.totawatch.de/api/spot/live"
+    sig: "Toilets"
+    sig-ref-prefix: "HOPE"
 
 
 # Alert providers to use. Same setup as the spot providers list above.
 alert-providers:
   - class: "POTA"
-    name: "POTA"
     enabled: true
 
   - class: "SOTA"
-    name: "SOTA"
     enabled: true
 
   - class: "WWFF"
-    name: "WWFF"
     enabled: true
 
   - class: "ParksNPeaks"
-    name: "ParksNPeaks"
     enabled: true
 
   - class: "WOTA"
-    name: "WOTA"
     enabled: true
 
   - class: "BOTA"
-    name: "BOTA"
     enabled: true
 
   - class: "NG3K"
-    name: "NG3K"
     enabled: true
 
 
+# SIG reference data providers to use. This allows Spothole to download, for example, the WWFF directory that maps WWFF
+# park IDs to their name and location.
+sig-ref-data-providers:
+  - class: "POTA"
+    enabled: true
+
+  - class: "SOTA"
+    enabled: true
+
+  - class: "WWFF"
+    enabled: true
+
+  - class: "WWBOTA"
+    enabled: true
+
+  - class: "GMA"
+    enabled: true
+
+  - class: "MOTA"
+    enabled: true
+
+  - class: "ILLW"
+    enabled: true
+
+  - class: "ARLHS"
+    enabled: true
+
+  - class: "WCA"
+    enabled: true
+
+  - class: "IOTA"
+    enabled: true
+
+  - class: "WOTA"
+    enabled: true
+
+  - class: "SIOTA"
+    enabled: true
+
+  - class: "ZLOTA"
+    enabled: true
+
+  - class: "LLOTA"
+    enabled: true
+
+  - class: "Towers"
+    enabled: true
+
+  - class: "DME"
+    enabled: true
+
+  - class: "Toilets"
+    enabled: true
+
 # Solar condition providers to use. These poll external APIs for solar propagation data (SFI, A/K indices, band
 # conditions, etc.) and make it available via the /api/v1/solar endpoint.
 solar-condition-providers:
   - class: "HamQSL"
-    name: "HamQSL"
     enabled: true
 
   - class: "NOAA3dayForecast"
-    name: "NOAA 3-day Forecast"
     enabled: true
 
   - class: "GIROIonosonde"
-    name: "GIRO Ionosonde Data"
     enabled: true
 
   - class: "KC2GProp"
-    name: "KC2G Propagation Data"
     enabled: true
 
 # Maximum time to keep spots and alerts in the system before deleting them. By default, one hour for spots and one week
@@ -211,6 +247,14 @@ clublog-api-key: ""
 # Allow submitting spots to the Spothole API?
 allow-spotting: true
 
+# Log web requests? Useful to see what your users are requesting in terms of pages and API endpoints, but will fill up
+# your log quickly on a popular server.
+log-web-requests: false
+
+# Minimum severity of log statements to print to the system log. Defaults to INFO, change to DEBUG if you need more
+# information.
+log-level: INFO
+
 # Options for the web UI.
 web-ui-options:
   spot-count: [ 10, 25, 50, 100 ]

core/cache_utils.py

@@ -1,24 +0,0 @@
-import threading
-from datetime import timedelta
-
-from requests_cache import CachedSession
-
-# Cache for "semi-static" data such as the locations of parks, CSVs of reference lists, etc.
-# This has an expiry time of 30 days, so will re-request from the source after that amount
-# of time has passed. This is used throughout Spothole to cache data that does not change
-# rapidly. The ThreadSafeSession construct here protects it against some multithreading
-# contention weirdness we sometimes used to see on startup where the cache was hammered
-# pretty hard.
-_session = CachedSession("cache/semi_static_url_data_cache", expire_after=timedelta(days=30))
-_lock = threading.Lock()
-
-
-class _ThreadSafeSession:
-    """Wraps CachedSession with a lock to prevent concurrent SQLite access across threads."""
-
-    def get(self, *args, **kwargs):
-        with _lock:
-            return _session.get(*args, **kwargs)
-
-
-SEMI_STATIC_URL_DATA_CACHE = _ThreadSafeSession()

core/cleanup.py

@@ -1,73 +0,0 @@
-import logging
-from datetime import datetime
-from threading import Event, Thread
-
-import pytz
-
-
-class CleanupTimer:
-    """Provides a timed cleanup of the spot list."""
-
-    def __init__(self, spots, alerts, web_server, cleanup_interval):
-        """Constructor"""
-
-        self._spots = spots
-        self._alerts = alerts
-        self._web_server = web_server
-        self._cleanup_interval = cleanup_interval
-        self.last_cleanup_time = datetime.min.replace(tzinfo=pytz.UTC)
-        self.status = "Starting"
-        self._thread = None
-        self._stop_event = Event()
-
-    def start(self):
-        """Start the cleanup timer"""
-
-        self._thread = Thread(target=self._run, daemon=True)
-        self._thread.start()
-
-    def stop(self):
-        """Stop any threads and prepare for application shutdown"""
-
-        self._stop_event.set()
-
-    def _run(self):
-        while not self._stop_event.wait(timeout=self._cleanup_interval):
-            self._cleanup()
-
-    def _cleanup(self):
-        """Perform cleanup and reschedule next timer"""
-
-        try:
-            # Perform cleanup via letting the data expire
-            self._spots.expire()
-            self._alerts.expire()
-
-            # Explicitly clean up any spots and alerts that have expired
-            for i in list(self._spots.iterkeys()):
-                try:
-                    spot = self._spots[i]
-                    if spot.expired():
-                        self._spots.delete(i)
-                except KeyError:
-                    # Must have already been deleted, OK with that
-                    pass
-            for i in list(self._alerts.iterkeys()):
-                try:
-                    alert = self._alerts[i]
-                    if alert.expired():
-                        self._alerts.delete(i)
-                except KeyError:
-                    # Must have already been deleted, OK with that
-                    pass
-
-            # Clean up web server SSE spot/alert queues
-            self._web_server.clean_up_sse_queues()
-
-            self.status = "OK"
-            self.last_cleanup_time = datetime.now(pytz.UTC)
-
-        except Exception:
-            self.status = "Error"
-            logging.exception("Exception in Cleanup thread")
-            self._stop_event.wait(timeout=1)

core/config.py

@@ -1,3 +1,4 @@
+import importlib
 import logging
 import os
 
@@ -22,6 +23,8 @@ WEB_SERVER_PORT = config["web-server-port"]
 ALLOW_SPOTTING = config["allow-spotting"]
 WEB_UI_OPTIONS = config["web-ui-options"]
 API_ONLY_MODE = config.get("api-only-mode", False)
+LOG_LEVEL = config.get("log-level", "INFO")
+LOG_WEB_REQUESTS = config.get("log-web-requests", False)
 
 # For ease of config, each spot provider owns its own config about whether it should be enabled by default in the web UI
 # but for consistency we provide this to the front-end in web-ui-options because it has no impact outside of the web UI.
@@ -31,3 +34,35 @@ WEB_UI_OPTIONS["spot-providers-enabled-by-default"] = [p["name"] for p in config
 # one of our proviers. We set that to also be enabled by default.
 if ALLOW_SPOTTING:
     WEB_UI_OPTIONS["spot-providers-enabled-by-default"].append("API")
+
+
+def get_spot_provider_from_config(config_providers_entry):
+    """Utility method to get a spot provider based on the class specified in its config entry."""
+
+    module = importlib.import_module('spotproviders.' + config_providers_entry["class"].lower())
+    provider_class = getattr(module, config_providers_entry["class"])
+    return provider_class(config_providers_entry)
+
+
+def get_alert_provider_from_config(config_providers_entry):
+    """Utility method to get an alert provider based on the class specified in its config entry."""
+
+    module = importlib.import_module('alertproviders.' + config_providers_entry["class"].lower())
+    provider_class = getattr(module, config_providers_entry["class"])
+    return provider_class(config_providers_entry)
+
+
+def get_solar_conditions_provider_from_config(config_providers_entry):
+    """Utility method to get a solar conditions provider based on the class specified in its config entry."""
+
+    module = importlib.import_module('solarconditionsproviders.' + config_providers_entry["class"].lower())
+    provider_class = getattr(module, config_providers_entry["class"])
+    return provider_class(config_providers_entry)
+
+
+def get_sig_ref_data_provider_from_config(config_providers_entry):
+    """Utility method to get a SIG reference data provider based on the class specified in its config entry."""
+
+    module = importlib.import_module('sigrefdataproviders.' + config_providers_entry["class"].lower())
+    provider_class = getattr(module, config_providers_entry["class"])
+    return provider_class(config_providers_entry)

core/constants.py

@@ -11,29 +11,29 @@ HAMQTH_PRG = ("Spothole v" + SOFTWARE_VERSION + " operated by " + SERVER_OWNER_C
 
 # Special Interest Groups
 SIGS = [
-    SIG(name="POTA", description="Parks on the Air", ref_regex=r"[A-Z]{2}\-\d{4,5}"),
+    SIG(name="POTA", comment_names=["POTA"], description="Parks on the Air", ref_regex=r"[A-Z]{2}\-\d{4,5}"),
-    SIG(name="SOTA", description="Summits on the Air", ref_regex=r"[A-Z0-9]{1,3}\/[A-Z]{2}\-\d{3}"),
+    SIG(name="SOTA", comment_names=["SOTA"], description="Summits on the Air", ref_regex=r"[A-Z0-9]{1,3}\/[A-Z]{2}\-\d{3}"),
-    SIG(name="WWFF", description="World Wide Flora & Fauna", ref_regex=r"[A-Z0-9]{1,3}FF\-\d{4}"),
+    SIG(name="WWFF", comment_names=["WWFF"], description="World Wide Flora & Fauna", ref_regex=r"[A-Z0-9]{1,3}FF\-\d{4}"),
-    SIG(name="GMA", description="Global Mountain Activity", ref_regex=r"[A-Z0-9]{1,3}\/[A-Z]{2}\-\d{3}"),
+    SIG(name="GMA", comment_names=["GMA"], description="Global Mountain Activity", ref_regex=r"[A-Z0-9]{1,3}\/[A-Z]{2}\-\d{3}"),
-    SIG(name="WWBOTA", description="Worldwide Bunkers on the Air", ref_regex=r"B\/[A-Z0-9]{1,3}\-\d{3,4}"),
+    SIG(name="WWBOTA", comment_names=["WWBOTA", "BOTA"], description="Worldwide Bunkers on the Air", ref_regex=r"B\/[A-Z0-9]{1,3}\-\d{3,4}"),
-    SIG(name="HEMA", description="HuMPs Excluding Marilyns Award", ref_regex=r"[A-Z0-9]{1,3}\/[A-Z]{3}\-\d{3}"),
+    SIG(name="HEMA", comment_names=["HEMA"], description="HuMPs Excluding Marilyns Award", ref_regex=r"[A-Z0-9]{1,3}\/[A-Z]{3}\-\d{3}"),
-    SIG(name="IOTA", description="Islands on the Air", ref_regex=r"[A-Z]{2}\-\d{3}"),
+    SIG(name="IOTA", comment_names=["IOTA"], description="Islands on the Air", ref_regex=r"[A-Z]{2}\-\d{3}"),
-    SIG(name="MOTA", description="Mills on the Air", ref_regex=r"X\d{4,6}"),
+    SIG(name="MOTA", comment_names=["MOTA"], description="Mills on the Air", ref_regex=r"X\d{4,6}"),
-    SIG(name="ARLHS", description="Amateur Radio Lighthouse Society", ref_regex=r"[A-Z]{3}\-\d{3,4}"),
+    SIG(name="ARLHS", comment_names=["ARLHS"], description="Amateur Radio Lighthouse Society", ref_regex=r"[A-Z]{3}[\- ]\d{3,4}"),
-    SIG(name="ILLW", description="International Lighthouse & Lightship Weekend", ref_regex=r"[A-Z]{2}\d{4}"),
+    SIG(name="ILLW", comment_names=["ILLW"], description="International Lighthouse & Lightship Weekend", ref_regex=r"[A-Z]{2}\d{4}"),
-    SIG(name="SIOTA", description="Silos on the Air", ref_regex=r"[A-Z]{2}\-[A-Z]{3}\d"),
+    SIG(name="SIOTA", comment_names=["SIOTA"], description="Silos on the Air", ref_regex=r"[A-Z]{2}\-[A-Z]{3}\d"),
-    SIG(name="WCA", description="World Castles Award", ref_regex=r"[A-Z0-9]{1,3}\-\d{5}"),
+    SIG(name="WCA", comment_names=["WCA"], description="World Castles Award", ref_regex=r"[A-Z0-9]{1,3}\-\d{5}"),
-    SIG(name="ZLOTA", description="New Zealand on the Air", ref_regex=r"ZL[A-Z]/[A-Z]{2}\-\d{3,4}"),
+    SIG(name="ZLOTA", comment_names=["ZLOTA"], description="New Zealand on the Air", ref_regex=r"ZL[A-Z]/[A-Z]{2}\-\d{3,4}"),
-    SIG(name="WOTA", description="Wainwrights on the Air", ref_regex=r"[A-Z]{3}-[0-9]{2}"),
+    SIG(name="WOTA", comment_names=["WOTA"], description="Wainwrights on the Air", ref_regex=r"[A-Z]{3}-[0-9]{2}"),
-    SIG(name="BOTA", description="Beaches on the Air"),
+    SIG(name="BOTA", comment_names=[], description="Beaches on the Air"),
-    SIG(name="KRMNPA", description="Keith Roget Memorial National Parks Award"),
+    SIG(name="KRMNPA", comment_names=["KRMNPA"], description="Keith Roget Memorial National Parks Award"),
-    SIG(name="LLOTA", description="Lagos y Lagunas on the Air", ref_regex=r"[A-Z]{2}\-\d{4}"),
+    SIG(name="LLOTA", comment_names=["LLOTA"], description="Lagos y Lagunas on the Air", ref_regex=r"LL[A-Z]{2}\-\d{4}"),
-    SIG(name="WWTOTA", description="Towers on the Air", ref_regex=r"[A-Z]{2}R\-\d{4}"),
+    SIG(name="Towers", comment_names=["TOTA"], description="Towers on the Air", ref_regex=r"[A-Z]{2,3}R\-\d{4}"),
-    SIG(name="Tiles", description="Tiles on the Air", ref_regex=r"[A-Za-z]{2}[0-9]{2}[A-Za-z]{2}"),
+    SIG(name="Tiles", comment_names=[], description="Tiles on the Air", ref_regex=r"[A-Za-z]{2}[0-9]{2}[A-Za-z]{2}"),
-    SIG(name="WAB", description="Worked All Britain", ref_regex=r"[A-Z]{1,2}[0-9]{2}"),
+    SIG(name="WAB", comment_names=["WAB"], description="Worked All Britain", ref_regex=r"[A-Z]{1,2}[0-9]{2}"),
-    SIG(name="WAI", description="Worked All Ireland", ref_regex=r"[A-Z][0-9]{2}"),
+    SIG(name="WAI", comment_names=["WAI"], description="Worked All Ireland", ref_regex=r"[A-Z][0-9]{2}"),
-    SIG(name="DME", description="Diplomas de Municipios Españoles", ref_regex=r"\d{4,5}"),
+    SIG(name="DME", comment_names=["DME"], description="Diplomas de Municipios Españoles", ref_regex=r"\d{4,5}"),
-    SIG(name="TOTA", description="Toilets on the Air", ref_regex=r"T\-[0-9]{2}")
+    SIG(name="Toilets", comment_names=[], description="Toilets on the Air", ref_regex=r"T\-[0-9]{2}")
 ]
 
 # Modes. Note "DIGI" and "DIGITAL" are also supported but are normalised into "DATA".
@@ -102,5 +102,6 @@ PROPAGATION_MODES = {
     "AU": "Aurora",
     "MS": "Meteor scatter",
     "RS": "Rain scatter",
-    "AS": "Aircraft scatter"
+    "AS": "Aircraft scatter",
+    "SAT": "Satellite"
 }

core/data_store.py

@@ -0,0 +1,80 @@
+import logging
+from pathlib import Path
+
+import diskcache
+
+from core.config import MAX_SPOT_AGE, MAX_ALERT_AGE
+from core.constants import SIGS
+from core.live_data_cache import LiveDataCache
+from data.solar_conditions import SolarConditions
+
+
+class DataStore:
+    """Data caching/storage object. Handles storage of spots, alerts, solar conditions, SIG reference data, and callsign
+    lookup data using different caching strategies for each."""
+
+    def __init__(self):
+        self._CACHE_DIR = "./cache"
+        self._MAX_SPOT_COUNT = 100000
+        self._MAX_ALERT_COUNT = 100000
+        self._SPOT_ALERT_SNAPSHOT_INTERVAL_SEC = 300
+        self._CALLSIGN_DATA_TTL_SEC = 30 * 24 * 60 * 60
+        self.alerts = None
+        self.spots = None
+        self.callsigns = None
+        self.sigrefs = None
+        self.status_data = None
+        self._status = None
+        self.solar_conditions = None
+        self._solar = None
+
+    def setup(self):
+        Path(self._CACHE_DIR).mkdir(parents=True, exist_ok=True)
+
+        # Standard disk cache for solar data and status data, but each cache contains only a single object which we
+        # expose to the wider application
+        self._solar = diskcache.Cache(self._CACHE_DIR + "/solar")
+        if "solar_conditions" not in self._solar:
+            self._solar.add("solar_conditions", SolarConditions())
+        self.solar_conditions = self._solar.get("solar_conditions")
+        self._status = diskcache.Cache(self._CACHE_DIR + "/status")
+        if "status_data" not in self._status:
+            self._status.add("status_data", {})
+        self.status_data = self._status.get("status_data")
+
+        # Standard disk cache for SIG ref data. Separate provider threads will repopulate theis on a regular basis
+        # but there's no need for a TTL since old data is better than no data. We need to key on both SIG and reference,
+        # and trying to do two layers of dict in diskcache absolutely destroys performance with unpickling huge dicts,
+        # so we have an ugly "SIG:ref" syntax for keys to keep it a single level.
+        self.sigrefs = diskcache.Cache(self._CACHE_DIR + "/sigrefs")
+        logging.info(f"Loaded data for %d SIG references.", len(self.sigrefs))
+
+        # Standard disk cache for callsign data. This data does have a TTL to trigger an occasional re-lookup.
+        # Old data *is* better than no data, but we can't have a background thread re-looking-up every callsign
+        # we've seen, so we rely on them timing out and this triggering another lookup.
+        self.callsigns = diskcache.Cache(self._CACHE_DIR + "/callsigns")
+        logging.info(f"Loaded data for %d callsigns.", len(self.callsigns))
+
+        # Special caches for spots and alerts, which have TTL and write snapshots to disk at an interval. We
+        # specifically load these caches *last* so that any sigref and callsign data is already loaded from disk cache
+        # before the spots and alerts are live in the system.
+        self.spots = LiveDataCache(maxsize=self._MAX_SPOT_COUNT, ttl=MAX_SPOT_AGE,
+                                   snapshot_dir=self._CACHE_DIR + "/spots",
+                                   snapshot_interval_sec=self._SPOT_ALERT_SNAPSHOT_INTERVAL_SEC)
+        logging.info(f"Loaded %d spots from a previous run.", len(self.spots.keys()))
+
+        self.alerts = LiveDataCache(maxsize=self._MAX_ALERT_COUNT, ttl=MAX_ALERT_AGE,
+                                    snapshot_dir=self._CACHE_DIR + "/alerts",
+                                    snapshot_interval_sec=self._SPOT_ALERT_SNAPSHOT_INTERVAL_SEC)
+        logging.info(f"Loaded %d alerts from a previous run.", len(self.alerts.keys()))
+
+    def close(self):
+        self.spots.close()
+        self.alerts.close()
+        self._solar.close()
+        self._status.close()
+        self.sigrefs.close()
+        self.callsigns.close()
+
+# Global object
+DATA_STORE = DataStore()

core/live_data_cache.py

@@ -0,0 +1,100 @@
+import logging
+import threading
+import time
+
+import diskcache
+from cachetools import TTLCache
+
+
+class LiveDataCache:
+    """Cache for spots and alerts. Uses the fast in-memory TTLCache for normal data I/O, including the TTL to enforce
+    maximum lifetime, and adds a separate diskcache to which we can save and load the TTLCache to provide persistence.
+    Also adds thread safety so spots and alerts can come from any thread, and a listener mechanism so the web server
+    can get a callback when new spots/alerts are added, and send them to any SSE clients."""
+
+    def __init__(self, maxsize, ttl, snapshot_dir, snapshot_interval_sec):
+        self._cache = TTLCache(maxsize=maxsize, ttl=ttl)
+        self._lock = threading.Lock()
+        self._ttl = ttl
+        self._listeners = []
+        self._listeners_lock = threading.Lock()
+        self._snapshot_dir = snapshot_dir
+        self._disk_cache = diskcache.Cache(str(snapshot_dir))
+        self._load_snapshot()
+        self._start_periodic_snapshot(snapshot_interval_sec)
+
+    def set(self, key, value):
+        with self._lock:
+            self._cache[key] = value
+
+        # Notify listeners
+        with self._listeners_lock:
+            listeners = list(self._listeners)
+        for callback in listeners:
+            try:
+                callback(value)
+            except Exception:
+                logging.error("Listener raised an exception for key %s", key, exc_info=True)
+
+
+    def get(self, key, default=None):
+        with self._lock:
+            return self._cache.get(key, default)
+
+    def delete(self, key):
+        with self._lock:
+            self._cache.pop(key, None)
+
+    def keys(self):
+        with self._lock:
+            return list(self._cache.keys())
+
+    def values(self):
+        with self._lock:
+            return list(self._cache.values())
+
+    def add_listener(self, callback):
+        """Register callback(value) which will be called whenever a new spot/alert item is added via set(). Used by the
+        web server (via SSEBroadcaster) to send SSE clients an update on every new spot."""
+
+        with self._listeners_lock:
+            self._listeners.append(callback)
+
+    def remove_listener(self, callback):
+        with self._listeners_lock:
+            self._listeners.remove(callback)
+
+    def save_snapshot(self):
+        with self._lock:
+            # Store the time with the data so we can avoid loading anything nxt time that's older than TTL
+            data = [(k, v, time.time()) for k, v in self._cache.items()]
+        try:
+            self._disk_cache.set("snapshot", data)
+        except Exception as e:
+            logging.error("Failed to write snapshot to %s", self._snapshot_dir, e, exc_info=True)
+
+    def _load_snapshot(self):
+        data = self._disk_cache.get("snapshot")
+        if not data:
+            return
+
+        now = time.time()
+        with self._lock:
+            for key, value, saved_at in data:
+                # Only restore entries that would still be within TTL
+                if now - saved_at < self._ttl:
+                    self._cache[key] = value
+        logging.info("Loaded snapshot from %s", self._snapshot_dir)
+
+    def _start_periodic_snapshot(self, interval):
+        def loop():
+            while True:
+                time.sleep(interval)
+                self.save_snapshot()
+
+        t = threading.Thread(target=loop, daemon=True, name=f"snapshot-{self._snapshot_dir}")
+        t.start()
+
+    def close(self):
+        self.save_snapshot()
+        self._disk_cache.close()

core/lookup_helper.py

@@ -5,19 +5,19 @@ import re
 import urllib.parse
 from datetime import timedelta
 
-import requests
 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.exceptions import ConnectionError, ReadTimeout, ConnectTimeout
 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, MODE_ALIASES
+from core.url_data_cache import URL_DATA_CACHE
 
 # QRZ XML field names differ from pyhamtools' normalised names; map them here.
 _QRZ_FIELD_MAP = {
@@ -142,14 +142,22 @@ class LookupHelper:
 
         try:
             logging.info("Downloading Country-files.com cty.plist...")
-            response = SEMI_STATIC_URL_DATA_CACHE.get("https://www.country-files.com/cty/cty.plist",
+            response = URL_DATA_CACHE.get("https://www.country-files.com/cty/cty.plist",
-                                                      headers=HTTP_HEADERS).text
+                                          headers=HTTP_HEADERS)
 
+            if response.ok:
                 with open(self._country_files_cty_plist_download_location, "w") as f:
-                f.write(response)
+                    f.write(response.text)
                     f.flush()
                     return True
+            else:
+                logging.warning(f"HTTP {response.status_code} when downloading Country-files.com cty.plist.")
+                return False
 
+        except ConnectionError:
+            logging.warning(f"Connection error when downloading Clublog cty.xml.")
+        except (ConnectTimeout, ReadTimeout):
+            logging.warning(f"Timeout when downloading Clublog cty.xml.")
         except Exception as e:
             logging.error("Exception when downloading Clublog cty.xml", e)
             return False
@@ -159,15 +167,23 @@ class LookupHelper:
 
         try:
             logging.info("Downloading dxcc.json...")
-            response = SEMI_STATIC_URL_DATA_CACHE.get(
+            response = URL_DATA_CACHE.get(
                 "https://raw.githubusercontent.com/k0swe/dxcc-json/refs/heads/main/dxcc.json",
-                headers=HTTP_HEADERS).text
+                headers=HTTP_HEADERS)
 
+            if response.ok:
                 with open(self._dxcc_json_download_location, "w") as f:
-                f.write(response)
+                    f.write(response.text)
                     f.flush()
                     return True
+            else:
+                logging.warning(f"HTTP {response.status_code} when downloading dxcc.json.")
+                return False
 
+        except ConnectionError:
+            logging.warning(f"Connection error when downloading dxcc.json.")
+        except (ConnectTimeout, ReadTimeout):
+            logging.warning(f"Timeout when downloading dxcc.json.")
         except Exception as e:
             logging.error("Exception when downloading dxcc.json", e)
             return False
@@ -490,25 +506,47 @@ class LookupHelper:
 
         # Try the call as given, then fall back to the base call (strips /P, /M etc.)
         calls_to_try = [call]
+        try:
             home_call = callinfo.Callinfo.get_homecall(call)
             if home_call != call:
                 calls_to_try.append(home_call)
+        except ValueError:
+            logging.debug("Could not look up home call for callsign %s", call)
 
         for lookup_call in calls_to_try:
             try:
-                lookup_response = requests.get(
+                response = URL_DATA_CACHE.get(
                     self._qrz_base_url + "?s=" + session_key + "&callsign=" + urllib.parse.quote_plus(lookup_call),
-                    headers=HTTP_HEADERS, timeout=10).content
+                    headers=HTTP_HEADERS, timeout=10)
-                raw = xmltodict.parse(lookup_response).get("QRZDatabase", {}).get("Callsign")
+                if response.ok:
-                if raw:
+                    qrz_response = xmltodict.parse(response.content).get("QRZDatabase", {})
-                    data = _normalize_qrz_data(raw)
+                    if qrz_response:
+                        if "Callsign" in qrz_response:
+                            data = _normalize_qrz_data(qrz_response.get("Callsign"))
                             self._qrz_callsign_data_cache.add(call, data, expire=604800)  # 1 week in seconds
                             return data
+                        elif "Session" in qrz_response and "Error" in qrz_response.get("Session"):
+                            # Errors here are normally just "callsign not in database", no need to log that ourselves
+                            # above debug level.
+                            logging.debug("QRZ returned an error looking up callsign %s: %s", lookup_call,
+                                          qrz_response.get("Session").get("Error"))
+
+                    elif not response.from_cache:
+                        logging.warning("QRZ returned a malformed response looking up callsign %s", lookup_call)
+                elif not response.from_cache:
+                    logging.warning("HTTP %d looking up callsign %s using QRZ", lookup_call)
+
             except (KeyError, ValueError):
                 continue
+            except ConnectionError:
+                logging.warning(f"Connection error when looking up callsign %s using QRZ", lookup_call)
+                continue
+            except (ConnectTimeout, ReadTimeout):
+                logging.warning(f"Timeout when looking up callsign %s using QRZ.", lookup_call)
+                continue
             except Exception:
-                logging.error("Exception when looking up QRZ data")
+                logging.error("Exception when looking up callsign %s using QRZ", lookup_call, exc_info=True)
-                return None
+                continue
 
         # Not found in QRZ; cache None so we don't keep retrying
         self._qrz_callsign_data_cache.add(call, None, expire=604800)  # 1 week in seconds
@@ -546,23 +584,36 @@ class LookupHelper:
 
         # Try the call as given, then fall back to the base call (strips /P, /M etc.)
         calls_to_try = [call]
+        try:
             home_call = callinfo.Callinfo.get_homecall(call)
             if home_call != call:
                 calls_to_try.append(home_call)
+        except ValueError:
+            logging.debug("Could not look up home call for callsign %s", call)
 
         for lookup_call in calls_to_try:
             try:
-                lookup_data = SEMI_STATIC_URL_DATA_CACHE.get(
+                response = URL_DATA_CACHE.get(
                     self._hamqth_base_url + "?id=" + session_id + "&callsign=" + urllib.parse.quote_plus(
-                        lookup_call) + "&prg=" + HAMQTH_PRG, headers=HTTP_HEADERS).content
+                        lookup_call) + "&prg=" + HAMQTH_PRG, headers=HTTP_HEADERS)
-                data = xmltodict.parse(lookup_data)["HamQTH"]["search"]
+                if response.ok:
+                    data = xmltodict.parse(response.content)["HamQTH"]["search"]
                     self._hamqth_callsign_data_cache.add(call, data, expire=604800)  # 1 week in seconds
                     return data
+                elif not response.from_cache:
+                    logging.warning("HTTP %d looking up callsign %s using HamQTH", response.status_code, lookup_call)
+
             except (KeyError, ValueError):
                 continue
+            except ConnectionError:
+                logging.warning(f"Connection error when looking up callsign %s using HamQTH", lookup_call)
+                continue
+            except (ConnectTimeout, ReadTimeout):
+                logging.warning(f"Timeout when looking up callsign %s using HamQTH", lookup_call)
+                continue
             except Exception:
-                logging.error("Exception when looking up HamQTH data")
+                logging.error("Exception when looking up callsign %s using HamQTH", lookup_call, exc_info=True)
-                return None
+                continue
 
         # Not found in HamQTH; cache None so we don't keep retrying
         self._hamqth_callsign_data_cache.add(call, None, expire=604800)  # 1 week in seconds

core/sig_utils.py

@@ -1,15 +1,11 @@
-import csv
 import logging
 
 from pyhamtools.locator import latlong_to_locator, locator_to_latlong
 
-from core.cache_utils import SEMI_STATIC_URL_DATA_CACHE
+from core.constants import SIGS
-from core.constants import SIGS, HTTP_HEADERS
+from core.data_store import DATA_STORE
 from core.geo_utils import wab_wai_square_to_lat_lon
 
-with open("datafiles/dme-geodata.csv", encoding="utf-8") as _f:
-    _DME_INDEX = {row["dme"]: row for row in csv.DictReader(_f)}
-
 
 def get_ref_regex_for_sig(sig):
     """Utility function to get the regex string for a SIG reference for a named SIG. If no match is found, None will be returned."""
@@ -20,157 +16,42 @@ def get_ref_regex_for_sig(sig):
     return None
 
 
+def get_sig_name_from_comment_name(sig):
+    """Utility function to get the name of a SIG from its "comment name". Generally these will be the same but there are
+    some cases (e.g. is "TOTA" Towers, Tiles or Toilets?) where we need to transform one to the other."""
+
+    for s in SIGS:
+        if any(n.upper() == sig.upper() for n in s.comment_names):
+            return s.name
+    return None
+
+
 def populate_sig_ref_info(sig_ref):
-    """Look up details of a SIG reference (e.g. POTA park) such as name, lat/lon, and grid. Takes in a sig_ref object which
+    """Look up details of a SIG reference (e.g. POTA park) such as name, lat/lon, and grid. Takes in a sig_ref object
-    must at minimum have a "sig" and an "id". The rest of the object will be populated and returned.
+    which must at minimum have a "sig" and an "id". The rest of the object will be populated and returned. This makes
+    use of SIG ref data in the data store, live lookups from the web, or just automatic calculation depending on which
+    SIG we are getting data for.
     Note there is currently no support for KRMNPA location lookup, see issue #61."""
 
-    if sig_ref.sig is None or sig_ref.id is None:
+    if sig_ref.sig is None or sig_ref.sig == "" or sig_ref.id is None or sig_ref.id == "":
-        logging.warning("Failed to look up sig_ref info, sig or id were not set.")
+        logging.debug("Failed to look up sig_ref info, sig or id were not set.")
+        return sig_ref
 
-    sig = sig_ref.sig or ""
+    sig = sig_ref.sig
     ref_id = sig_ref.id
+
+    # DME fudge. Our database has leading zeros padding to 5 digits which is the expected format, but not all activators
+    # add leading zeros.
+    if sig.upper() == "DME":
+        ref_id = ref_id.zfill(5)
+
     try:
-        if sig.upper() == "POTA":
+        # If the SIG is HEMA or KRMNPA, we have no current lookup for this so just skip it.
-            response = SEMI_STATIC_URL_DATA_CACHE.get("https://api.pota.app/park/" + ref_id, headers=HTTP_HEADERS)
+        if sig.upper() == "HEMA" or sig.upper() == "KRMNPA":
-            if not response.ok:
-                logging.warning("HTTP %d looking up %s ref %s", response.status_code, sig, ref_id)
-            data = response.json() if response.ok else None
-            if data:
-                fullname = str(data["name"]) if "name" in data else None
-                if fullname and "parktypeDesc" in data and data["parktypeDesc"] != "":
-                    fullname = fullname + " " + data["parktypeDesc"]
-                sig_ref.name = fullname
-                sig_ref.url = "https://pota.app/#/park/" + ref_id
-                sig_ref.grid = data["grid6"] if "grid6" in data else None
-                sig_ref.latitude = data["latitude"] if "latitude" in data else None
-                sig_ref.longitude = data["longitude"] if "longitude" in data else None
-        elif sig.upper() == "SOTA":
-            response = SEMI_STATIC_URL_DATA_CACHE.get("https://api-db2.sota.org.uk/api/summits/" + ref_id,
-                                                      headers=HTTP_HEADERS)
-            if not response.ok:
-                logging.warning("HTTP %d looking up %s ref %s", response.status_code, sig, ref_id)
-            data = response.json() if response.ok else None
-            if data:
-                sig_ref.name = data["name"] if "name" in data else None
-                sig_ref.url = "https://www.sotadata.org.uk/en/summit/" + ref_id
-                sig_ref.grid = data["locator"] if "locator" in data else None
-                sig_ref.latitude = data["latitude"] if "latitude" in data else None
-                sig_ref.longitude = data["longitude"] if "longitude" in data else None
-                sig_ref.activation_score = data["points"] if "points" in data else None
-        elif sig.upper() == "WWBOTA":
-            response = SEMI_STATIC_URL_DATA_CACHE.get("https://api.wwbota.org/bunkers/" + ref_id,
-                                                      headers=HTTP_HEADERS)
-            if not response.ok:
-                logging.warning("HTTP %d looking up %s ref %s", response.status_code, sig, ref_id)
-            data = response.json() if response.ok else None
-            if data:
-                sig_ref.name = data["name"] if "name" in data else None
-                sig_ref.url = "https://bunkerwiki.org/?s=" + ref_id if ref_id.startswith("B/G") else None
-                sig_ref.grid = data["locator"] if "locator" in data else None
-                sig_ref.latitude = data["lat"] if "lat" in data else None
-                sig_ref.longitude = data["long"] if "long" in data else None
-        elif sig.upper() == "GMA" or sig.upper() == "ARLHS" or sig.upper() == "ILLW" or sig.upper() == "WCA" or sig.upper() == "MOTA" or sig.upper() == "IOTA":
-            response = SEMI_STATIC_URL_DATA_CACHE.get("https://www.cqgma.org/api/ref/?" + ref_id,
-                                                      headers=HTTP_HEADERS)
-            if not response.ok:
-                logging.warning("HTTP %d looking up %s ref %s", response.status_code, sig, ref_id)
-            data = response.json() if response.ok else None
-            if data:
-                sig_ref.name = data["name"] if "name" in data else None
-                sig_ref.url = "https://www.cqgma.org/zinfo.php?ref=" + ref_id
-                sig_ref.grid = data["locator"] if "locator" in data else None
-                sig_ref.latitude = data["latitude"] if "latitude" in data else None
-                sig_ref.longitude = data["longitude"] if "longitude" in data else None
-        elif sig.upper() == "WWFF":
-            wwff_response = SEMI_STATIC_URL_DATA_CACHE.get("https://wwff.co/wwff-data/wwff_directory.csv",
-                                                           headers=HTTP_HEADERS)
-            if not wwff_response.ok:
-                logging.warning("HTTP %d looking up %s ref %s", wwff_response.status_code, sig, ref_id)
             return sig_ref
-            wwff_index = {row["reference"]: row for row in csv.DictReader(wwff_response.content.decode().splitlines())}
+
-            row = wwff_index.get(ref_id)
+        # If the SIG is Tiles, WAB, WAI or BOTA (Beaches), we don't have anything to look up from the data store, we can
-            if row:
+        # calculate all the information we are going to get directly. So handle those cases first
-                sig_ref.name = row["name"] if "name" in row else None
-                sig_ref.url = "https://wwff.co/directory/?showRef=" + ref_id
-                sig_ref.grid = row["iaruLocator"] if "iaruLocator" in row and row["iaruLocator"] != "-" else None
-                sig_ref.latitude = float(row["latitude"]) if "latitude" in row and row["latitude"] != "-" else None
-                sig_ref.longitude = float(row["longitude"]) if "longitude" in row and row["longitude"] != "-" else None
-        elif sig.upper() == "SIOTA":
-            siota_response = SEMI_STATIC_URL_DATA_CACHE.get("https://www.silosontheair.com/data/silos.csv",
-                                                            headers=HTTP_HEADERS)
-            if not siota_response.ok:
-                logging.warning("HTTP %d looking up %s ref %s", siota_response.status_code, sig, ref_id)
-                return sig_ref
-            siota_index = {row["SILO_CODE"]: row for row in
-                           csv.DictReader(siota_response.content.decode().splitlines())}
-            row = siota_index.get(ref_id)
-            if row:
-                sig_ref.name = row["NAME"] if "NAME" in row else None
-                sig_ref.grid = row["LOCATOR"] if "LOCATOR" in row else None
-                sig_ref.latitude = float(row["LAT"]) if "LAT" in row else None
-                sig_ref.longitude = float(row["LNG"]) if "LNG" in row else None
-        elif sig.upper() == "WOTA":
-            response = SEMI_STATIC_URL_DATA_CACHE.get("https://www.wota.org.uk/mapping/data/summits.json",
-                                                      headers=HTTP_HEADERS)
-            if not response.ok:
-                logging.warning("HTTP %d looking up %s ref %s", response.status_code, sig, ref_id)
-            data = response.json() if response.ok else None
-            if data:
-                for feature in data.get("features", []):
-                    if feature["properties"]["wotaId"] == ref_id:
-                        sig_ref.name = feature["properties"]["title"]
-                        # Fudge WOTA URLs. Outlying fell (LDO) URLs don't match their ID numbers but require 214 to be
-                        # added to them
-                        sig_ref.url = "https://www.wota.org.uk/MM_" + ref_id
-                        if ref_id.upper().startswith("LDO-"):
-                            number = int(ref_id.upper().replace("LDO-", ""))
-                            sig_ref.url = "https://www.wota.org.uk/MM_LDO-" + str(number + 214)
-                        sig_ref.grid = feature["properties"]["qthLocator"]
-                        sig_ref.latitude = feature["geometry"]["coordinates"][1]
-                        sig_ref.longitude = feature["geometry"]["coordinates"][0]
-                        break
-        elif sig.upper() == "ZLOTA":
-            response = SEMI_STATIC_URL_DATA_CACHE.get("https://ontheair.nz/assets/assets.json", headers=HTTP_HEADERS)
-            if not response.ok:
-                logging.warning("HTTP %d looking up %s ref %s", response.status_code, sig, ref_id)
-            data = response.json() if response.ok else None
-            if isinstance(data, list):
-                for asset in data:
-                    if asset["code"] == ref_id:
-                        sig_ref.name = asset["name"]
-                        sig_ref.url = "https://ontheair.nz/assets/ZLI_OT-030" + ref_id.replace("/", "_")
-                        try:
-                            sig_ref.grid = latlong_to_locator(asset["y"], asset["x"], 6)
-                        except:
-                            logging.debug("Invalid lat/lon received for reference")
-                            sig_ref.latitude = asset["y"]
-                            sig_ref.longitude = asset["x"]
-                        break
-        elif sig.upper() == "BOTA":
-            if not sig_ref.name:
-                sig_ref.name = sig_ref.id
-            sig_ref.url = "https://www.beachesontheair.com/beaches/" + sig_ref.name.lower().replace(" ", "-")
-        elif sig.upper() == "LLOTA":
-            response = SEMI_STATIC_URL_DATA_CACHE.get("https://llota.app/api/public/references",
-                                                      headers=HTTP_HEADERS)
-            if not response.ok:
-                logging.warning("HTTP %d looking up %s ref %s", response.status_code, sig, ref_id)
-            data = response.json() if response.ok else None
-            if isinstance(data, list):
-                for ref in data:
-                    if ref["reference_code"] == ref_id:
-                        sig_ref.name = str(ref["name"])
-                        sig_ref.url = "https://llota.app/list/ref/" + ref_id
-                        sig_ref.grid = str(ref["grid_locator"])
-                        ll = locator_to_latlong(sig_ref.grid)
-                        sig_ref.latitude = ll[0]
-                        sig_ref.longitude = ll[1]
-                        break
-        elif sig.upper() == "WWTOTA":
-            if not sig_ref.name:
-                sig_ref.name = sig_ref.id
-            sig_ref.url = "https://wwtota.com/seznam/karta_rozhledny.php?ref=" + str(sig_ref.name)
         elif sig.upper() == "TILES":
             # Tiles on the Air just uses Maidenhead 6-digit squares, so ID, Name and Grid are all the same
             if not sig_ref.name:
@@ -181,6 +62,7 @@ def populate_sig_ref_info(sig_ref):
                 ll = locator_to_latlong(str(sig_ref.grid))
                 sig_ref.latitude = ll[0]
                 sig_ref.longitude = ll[1]
+
         elif sig.upper() == "WAB" or sig.upper() == "WAI":
             ll = wab_wai_square_to_lat_lon(ref_id)
             if ll:
@@ -190,25 +72,32 @@ def populate_sig_ref_info(sig_ref):
                     sig_ref.latitude = ll[0]
                     sig_ref.longitude = ll[1]
                 except:
-                    logging.debug("Invalid lat/lon received for reference")
+                    logging.warning("Invalid lat/lon received for WAB/WAI reference")
-        elif sig.upper() == "DME":
+
-            row = _DME_INDEX.get(ref_id)
+        elif sig.upper() == "BOTA":
-            if row:
+            # For BOTA all we can ever generate is the URL, there is no data file or lookup for lat/longs
-                sig_ref.name = row["municipio"] + ", " + row["provincia"]
+            if not sig_ref.name:
-                sig_ref.latitude = float(row["lat"]) if row.get("lat") else None
+                sig_ref.name = sig_ref.id
-                sig_ref.longitude = float(row["lon"]) if row.get("lon") else None
+            sig_ref.url = "https://www.beachesontheair.com/beaches/" + sig_ref.name.lower().replace(" ", "-")
-                if sig_ref.latitude and sig_ref.longitude:
+
-                    try:
+        # OK, this is something we have to look up. Now check to see if our data store contains SIG ref information for
-                        sig_ref.grid = latlong_to_locator(sig_ref.latitude, sig_ref.longitude, 6)
+        # this SIG. If so, check for the reference data and use that.
+        elif sig in DATA_STORE.sigrefs:
+            key = sig + ":" + ref_id
+            lookup_data = DATA_STORE.sigrefs.get(key) if key in DATA_STORE.sigrefs else None
+            if lookup_data:
+                # Copy new sig ref data into existing object
+                sig_ref.__dict__.update(lookup_data.__dict__)
+            else:
+                logging.warning("%s database did not contain data for ref %s", sig, ref_id)
+
+        else:
+            logging.warning(f"Tried to look up a SIG called %s but Spothole does not know what that is.", sig)
+
     except Exception:
-                        logging.debug("Invalid lat/lon received for reference")
+        logging.error("Exception when looking up sig_ref info for " + sig + " ref " + ref_id, exc_info=True)
-    except Exception:
-        logging.warning("Failed to look up sig_ref info for " + sig + " ref " + ref_id, exc_info=True)
     return sig_ref
 
 
-# Regex matching any SIG
+# Regex matching any SIG's "comment name", i.e. how it may be referred to in spot comments
-ANY_SIG_REGEX = r"(" + r"|".join(list(map(lambda p: p.name, SIGS))) + r")"
+ANY_SIG_REGEX = r"(" + r"|".join(n for s in SIGS for n in s.comment_names) + r")"
-
-# Regex matching any SIG reference
-ANY_XOTA_SIG_REF_REGEX = r"[\w\/]+\-\d+"

core/status_reporter.py

@@ -7,31 +7,29 @@ import pytz
 
 from core.config import SERVER_OWNER_CALLSIGN
 from core.constants import SOFTWARE_VERSION
+from core.data_store import DATA_STORE
 from core.prometheus_metrics_handler import memory_use_gauge, spots_gauge, alerts_gauge
 
 
 class StatusReporter:
     """Provides a timed update of the application's status data."""
 
-    def __init__(self, status_data, run_interval, web_server, cleanup_timer, spots, spot_providers, alerts,
+    def __init__(self, run_interval, web_server, spot_providers, alert_providers, solar_condition_providers,
-                 alert_providers, solar_condition_providers):
+                 sig_ref_data_providers):
         """Constructor"""
 
-        self._status_data = status_data
         self._run_interval = run_interval
         self._web_server = web_server
-        self._cleanup_timer = cleanup_timer
-        self._spots = spots
         self._spot_providers = spot_providers
-        self._alerts = alerts
         self._alert_providers = alert_providers
         self._solar_condition_providers = solar_condition_providers
+        self._sig_ref_data_providers = sig_ref_data_providers
         self._thread = None
         self._stop_event = Event()
         self._startup_time = datetime.now(pytz.UTC)
 
-        self._status_data["software-version"] = SOFTWARE_VERSION
+        DATA_STORE.status_data["software-version"] = SOFTWARE_VERSION
-        self._status_data["server-owner-callsign"] = SERVER_OWNER_CALLSIGN
+        DATA_STORE.status_data["server-owner-callsign"] = SERVER_OWNER_CALLSIGN
 
     def start(self):
         """Start the reporter thread"""
@@ -55,31 +53,34 @@ class StatusReporter:
     def _report(self):
         """Write status information"""
 
-        self._status_data["uptime"] = (datetime.now(pytz.UTC) - self._startup_time).total_seconds()
+        DATA_STORE.status_data["uptime"] = (datetime.now(pytz.UTC) - self._startup_time).total_seconds()
-        self._status_data["mem_use_mb"] = round(psutil.Process(os.getpid()).memory_info().rss / (1024 * 1024), 3)
+        DATA_STORE.status_data["mem_use_mb"] = round(psutil.Process(os.getpid()).memory_info().rss / (1024 * 1024), 3)
-        self._status_data["num_spots"] = len(self._spots)
+        DATA_STORE.status_data["num_spots"] = len(DATA_STORE.spots.values())
-        self._status_data["num_alerts"] = len(self._alerts)
+        DATA_STORE.status_data["num_alerts"] = len(DATA_STORE.alerts.values())
-        self._status_data["spot_providers"] = list(
+        DATA_STORE.status_data["spot_providers"] = list(
         map(lambda p: {"name": p.name, "enabled": p.enabled, "status": p.status,
                        "last_updated": p.last_update_time.replace(
                            tzinfo=pytz.UTC).timestamp() if p.last_update_time.year > 2000 else 0,
                        "last_spot": p.last_spot_time.replace(
                            tzinfo=pytz.UTC).timestamp() if p.last_spot_time.year > 2000 else 0},
             self._spot_providers))
-        self._status_data["alert_providers"] = list(
+        DATA_STORE.status_data["alert_providers"] = list(
         map(lambda p: {"name": p.name, "enabled": p.enabled, "status": p.status,
                        "last_updated": p.last_update_time.replace(
                            tzinfo=pytz.UTC).timestamp() if p.last_update_time.year > 2000 else 0},
             self._alert_providers))
-        self._status_data["solar_condition_providers"] = list(
+        DATA_STORE.status_data["solar_condition_providers"] = list(
         map(lambda p: {"name": p.name, "enabled": p.enabled, "status": p.status,
                        "last_updated": p.last_update_time.replace(
                            tzinfo=pytz.UTC).timestamp() if p.last_update_time.year > 2000 else 0},
             self._solar_condition_providers))
-        self._status_data["cleanup"] = {"status": self._cleanup_timer.status,
+        DATA_STORE.status_data["sig_ref_data_providers"] = list(
-                                        "last_ran": self._cleanup_timer.last_cleanup_time.replace(
+            map(lambda p: {"sig_name": p.sig_name, "enabled": p.enabled, "status": p.status,
-                                            tzinfo=pytz.UTC).timestamp() if self._cleanup_timer.last_cleanup_time else 0}
+                           "last_updated": p.last_update_time.replace(
-        self._status_data["webserver"] = {"status": self._web_server.web_server_metrics["status"],
+                               tzinfo=pytz.UTC).timestamp() if p.last_update_time.year > 2000 else 0,
+                           "reference_count": p.reference_count},
+                self._sig_ref_data_providers))
+        DATA_STORE.status_data["webserver"] = {"status": self._web_server.web_server_metrics["status"],
                                       "last_api_access": self._web_server.web_server_metrics[
                                           "last_api_access_time"].replace(
                                           tzinfo=pytz.UTC).timestamp() if self._web_server.web_server_metrics[
@@ -94,5 +95,5 @@ class StatusReporter:
 
         # Update Prometheus metrics
         memory_use_gauge.set(psutil.Process(os.getpid()).memory_info().rss)
-        spots_gauge.set(len(self._spots))
+        spots_gauge.set(len(DATA_STORE.spots.values()))
-        alerts_gauge.set(len(self._alerts))
+        alerts_gauge.set(len(DATA_STORE.alerts.values()))

core/url_data_cache.py

@@ -0,0 +1,23 @@
+import threading
+from datetime import timedelta
+
+from requests_cache import CachedSession
+
+# Cache for "semi-static" data retrieved from a URL. This is a layet of caching in addition to the normal caching of
+# spots, alerts and other data in the DataStore class. Its purpose is to avoid hitting remote endpoints frequently when
+# e.g. restarting Spothole many times during testing.
+_session = CachedSession("cache/semi_static_urls", expire_after=timedelta(days=1),
+                         allowable_codes=(200, 400, 401, 403, 404))
+_lock = threading.Lock()
+
+
+class _ThreadSafeSession:
+    """Wraps CachedSession with a lock to prevent concurrent SQLite access across threads. This allows a single object
+    to be used freely across the application."""
+
+    def get(self, *args, **kwargs):
+        with _lock:
+            return _session.get(*args, **kwargs)
+
+# Global object
+URL_DATA_CACHE = _ThreadSafeSession()

core/utils.py

@@ -1,15 +1,8 @@
-def serialize_everything(obj):
+import simplejson
-    """Convert objects to serialisable things. Used by JSON serialiser as a default when it encounters unserializable things.
-    Just converts objects to dict. Try to avoid doing anything clever here when serialising spots, because we also need
-    to receive spots without complex handling."""
-    return obj.__dict__
 
 
-def empty_queue(q):
+def safe_json_dumps(obj):
-    """Empty a queue"""
+    """Safe version of json.dumps that also converts objects to dicts so they can be output, and ignores NaN floats
+    which are invalid in JSON."""
 
-    while not q.empty():
+    return simplejson.dumps(obj, ensure_ascii=False, ignore_nan=True, default=lambda o: o.__dict__)
-        try:
-            q.get_nowait()
-        except:
-            break

data/alert.py

@@ -1,6 +1,7 @@
 import copy
 import hashlib
 import json
+import logging
 from dataclasses import dataclass
 from datetime import datetime, timedelta
 
@@ -64,6 +65,7 @@ class Alert:
     def infer_missing(self, credentials=None):
         """Infer missing parameters where possible"""
 
+        try:
             # If we somehow don't have a start time, set it to zero so it sorts off the bottom of any list but
             # clients can still reliably parse it as a number.
             if not self.start_time:
@@ -128,6 +130,9 @@ class Alert:
                 self.dx_names = list(
                     map(lambda c: lookup_helper.infer_name_from_callsign_online_lookup(c, credentials), self.dx_calls))
 
+        except Exception as e:
+            logging.error("Exception while inferring missing data from spot", e, exc_info=True)
+
     def to_json(self):
         """JSON serialise"""
 

data/sig.py

@@ -1,13 +1,21 @@
-from dataclasses import dataclass
+from dataclasses import dataclass, field
 
 
 @dataclass
 class SIG:
-    """Data class that defines a Special Interest Group."""
+    """Data class that defines a Special Interest Group. Each contains a name and a longer form description.
+     They also contain comment_names which attempts to separate out the way people might refer to it in
+     cluster comments from how it is referred to in the UI & API. (For example, "TOTA" in cluster spot comments
+     almost always means Towers on the Air, but no single programme is referred to in the UI as "TOTA" as
+     it's ambiguous between Towers, Toilets and Tiles. And while Beaches got the name "BOTA" first, "BOTA" spots
+     are much more likely to be bunkers.) Finally, there is a ref_regex which provides a regular expression to
+     match what references (such as parks and summits) look like for that programme."""
 
-    # SIG name, e.g. "POTA"
+    # SIG name as used in the UI and API, e.g. "Towers"
     name: str
-    # Description, e.g. "Parks on the Air"
+    # Description, e.g. "Towers on the Air"
     description: str
+    # SIG names as they might appear in cluster spot comments, e.g. ["TOTA"]
+    comment_names: list[str] = field(default_factory=list)
     # Regex matcher for references, e.g. for POTA r"[A-Z]{2}\-\d+".
-    ref_regex: str = None
+    ref_regex: str | None = None

data/spot.py

@@ -14,7 +14,7 @@ from core.constants import MODE_ALIASES, PROPAGATION_MODES
 from core.geo_utils import lat_lon_to_cq_zone, lat_lon_to_itu_zone
 from core.lookup_helper import lookup_helper, infer_band_from_freq, infer_mode_from_comment, \
     infer_mode_from_frequency, infer_mode_type_from_mode
-from core.sig_utils import populate_sig_ref_info, ANY_SIG_REGEX, get_ref_regex_for_sig
+from core.sig_utils import populate_sig_ref_info, ANY_SIG_REGEX, get_ref_regex_for_sig, get_sig_name_from_comment_name
 from data.sig_ref import SIGRef
 
 
@@ -133,9 +133,21 @@ class Spot:
     # The ID the source gave it, if any.
     source_id: str | None = None
 
+    def __post_init__(self):
+        """Normalise fields that don't survive a plain dict to Spot conversion. This is used in the "add spot" API
+        endpoint where the client is submitting JSON, and we want to recreate a full Spot object, including nested
+        objects such as the sig_refs list.."""
+
+        if self.sig_refs:
+            self.sig_refs = [
+                sig_ref if isinstance(sig_ref, SIGRef) else SIGRef(**sig_ref)
+                for sig_ref in self.sig_refs
+            ]
+
     def infer_missing(self, credentials=None):
         """Infer missing parameters where possible"""
 
+        try:
             # If we somehow don't have a spot time, set it to zero so it sorts off the bottom of any list but
             # clients can still reliably parse it as a number.
             if not self.time:
@@ -255,7 +267,7 @@ class Spot:
                 for sig_match in sig_matches:
                     # First of all, if we haven't got a SIG for this spot set yet, now we have. This covers things like cluster
                     # spots where the comment is just "POTA".
-                found_sig = sig_match.group(2).upper()
+                    found_sig = get_sig_name_from_comment_name(sig_match.group(2))
                     if not self.sig:
                         self.sig = found_sig
 
@@ -312,7 +324,7 @@ class Spot:
                             self.propagation_mode = PROPAGATION_MODES[mode_tag]
                         else:
                             self.propagation_mode = mode_tag
-                        logging.info("Seen a new propagation mode tag not yet in the system: {}", mode_tag)
+                            logging.info("Seen a new propagation mode tag not yet in the system: %s", mode_tag)
 
             # DX Grid to lat/lon and vice versa in case one is missing
             if self.dx_grid and not self.dx_latitude:
@@ -426,6 +438,9 @@ class Spot:
                         self.de_longitude = latlon[1]
                         self.de_grid = lookup_helper.infer_grid_from_callsign_dxcc(self.de_call)
 
+        except Exception as e:
+            logging.error("Exception while inferring missing data from spot", e, exc_info=True)
+
     def to_json(self):
         """JSON serialise"""
 

datafiles/39c3-tota.csv

@@ -1,18 +0,0 @@
-ref,lat,lon
-T-01,53.56278090617755,9.984341869295505
-T-02,53.562383404176416,9.98551893027115
-T-03,53.56170184391514,9.985416035619778
-T-04,53.562026534393176,9.986372919078974
-T-11,53.56284641242506,9.98475590239655
-T-12,53.562431705517035,9.98551675702443
-T-13,53.56223704898424,9.985774520335664
-T-14,53.5617893512591,9.986344302837976
-T-21,53.56284641242506,9.98475590239655
-T-22,53.56245816412497,9.985456089490567
-T-23,53.56199560857136,9.985636761412673
-T-24,53.5617893512591,9.986344302837976
-T-31,53.56247470064887,9.985611427551902
-T-32,53.5617893512591,9.986344302837976
-T-41,53.56245039134992,9.985486136112701
-T-91,53.56147934973529,9.984626806439744
-T-92,53.561396810300735,9.987553052152899

datafiles/eh23-tota.csv

@@ -1,13 +0,0 @@
-ref,lat,lon
-T-01,50.3636495,7.5584857
-T-02,50.3636495,7.5584857
-T-03,50.3636495,7.5584857
-T-11,50.3636495,7.5584857
-T-13,50.3636495,7.5584857
-T-14,50.3636495,7.5584857
-T-21,50.3636495,7.5584857
-T-31,50.3636495,7.5584857
-T-33,50.3636495,7.5584857
-T-34,50.3636495,7.5584857
-T-41,50.3636495,7.5584857
-T-51,50.3636495,7.5584857

datafiles/toilets.csv

@@ -0,0 +1,30 @@
+ref,lat,lon
+C3 T-01,53.56278090617755,9.984341869295505
+C3 T-02,53.562383404176416,9.98551893027115
+C3 T-03,53.56170184391514,9.985416035619778
+C3 T-04,53.562026534393176,9.986372919078974
+C3 T-11,53.56284641242506,9.98475590239655
+C3 T-12,53.562431705517035,9.98551675702443
+C3 T-13,53.56223704898424,9.985774520335664
+C3 T-14,53.5617893512591,9.986344302837976
+C3 T-21,53.56284641242506,9.98475590239655
+C3 T-22,53.56245816412497,9.985456089490567
+C3 T-23,53.56199560857136,9.985636761412673
+C3 T-24,53.5617893512591,9.986344302837976
+C3 T-31,53.56247470064887,9.985611427551902
+C3 T-32,53.5617893512591,9.986344302837976
+C3 T-41,53.56245039134992,9.985486136112701
+C3 T-91,53.56147934973529,9.984626806439744
+C3 T-92,53.561396810300735,9.987553052152899
+EH T-01,50.3636495,7.5584857
+EH T-02,50.3636495,7.5584857
+EH T-03,50.3636495,7.5584857
+EH T-11,50.3636495,7.5584857
+EH T-13,50.3636495,7.5584857
+EH T-14,50.3636495,7.5584857
+EH T-21,50.3636495,7.5584857
+EH T-31,50.3636495,7.5584857
+EH T-33,50.3636495,7.5584857
+EH T-34,50.3636495,7.5584857
+EH T-41,50.3636495,7.5584857
+EH T-51,50.3636495,7.5584857

requirements.txt

@@ -17,3 +17,5 @@ websocket-client~=1.8.0
 tornado~=6.4.2
 tornado_eventsource~=3.0.0
 geopandas~=0.13.2
+simplejson~=4.1.1
+cachetools~=7.1.6

server/handlers/api/addspot.py

@@ -1,4 +1,3 @@
-import json
 import logging
 import re
 from datetime import datetime
@@ -9,13 +8,12 @@ import tornado
 from tornado import httputil
 from tornado.web import Application
 
-from core.config import ALLOW_SPOTTING, MAX_SPOT_AGE
+from core.config import ALLOW_SPOTTING
 from core.constants import UNKNOWN_BAND
 from core.lookup_helper import infer_band_from_freq
 from core.prometheus_metrics_handler import api_requests_counter
 from core.sig_utils import get_ref_regex_for_sig
-from core.utils import serialize_everything
+from core.utils import safe_json_dumps
-from data.sig_ref import SIGRef
 from data.spot import Spot
 
 
@@ -42,8 +40,7 @@ class APISpotHandler(tornado.web.RequestHandler):
             # Reject if not allowed
             if not ALLOW_SPOTTING:
                 self.set_status(401)
-                self.write(json.dumps("Error - this server does not allow new spots to be added via the API.",
+                self.write(safe_json_dumps("Error - this server does not allow new spots to be added via the API."))
-                                      default=serialize_everything))
                 self.set_header("Cache-Control", "no-store")
                 self.set_header("Content-Type", "application/json")
                 return
@@ -51,8 +48,7 @@ class APISpotHandler(tornado.web.RequestHandler):
             # Reject if format not json
             if not self.request.headers.get('Content-Type', '').startswith("application/json"):
                 self.set_status(415)
-                self.write(
+                self.write(safe_json_dumps("Error - request Content-Type must be application/json"))
-                    json.dumps("Error - request Content-Type must be application/json", default=serialize_everything))
                 self.set_header("Cache-Control", "no-store")
                 self.set_header("Content-Type", "application/json")
                 return
@@ -61,7 +57,7 @@ class APISpotHandler(tornado.web.RequestHandler):
             post_data = self.request.body
             if not post_data:
                 self.set_status(422)
-                self.write(json.dumps("Error - request body is empty", default=serialize_everything))
+                self.write(safe_json_dumps("Error - request body is empty"))
                 self.set_header("Cache-Control", "no-store")
                 self.set_header("Content-Type", "application/json")
                 return
@@ -70,19 +66,10 @@ class APISpotHandler(tornado.web.RequestHandler):
             json_spot = tornado.escape.json_decode(post_data)
             spot = Spot(**json_spot)
 
-            # Converting to a spot object this way won't have coped with sig_ref objects, so fix that. (Would be nice to
-            # redo this in a functional style)
-            if spot.sig_refs:
-                real_sig_refs = []
-                for dict_obj in spot.sig_refs:
-                    real_sig_refs.append(json.loads(json.dumps(dict_obj), object_hook=lambda d: SIGRef(**d)))
-                spot.sig_refs = real_sig_refs
-
             # Reject if no timestamp, frequency, dx_call or de_call
             if not spot.time or not spot.dx_call or not spot.freq or not spot.de_call:
                 self.set_status(422)
-                self.write(json.dumps("Error - 'time', 'dx_call', 'freq' and 'de_call' must be provided as a minimum.",
+                self.write(safe_json_dumps("Error - 'time', 'dx_call', 'freq' and 'de_call' must be provided as a minimum."))
-                                      default=serialize_everything))
                 self.set_header("Cache-Control", "no-store")
                 self.set_header("Content-Type", "application/json")
                 return
@@ -90,15 +77,13 @@ class APISpotHandler(tornado.web.RequestHandler):
             # Reject invalid-looking callsigns
             if not re.match(r"^[A-Za-z0-9/\-]*$", spot.dx_call):
                 self.set_status(422)
-                self.write(json.dumps("Error - '" + spot.dx_call + "' does not look like a valid callsign.",
+                self.write(safe_json_dumps("Error - '" + spot.dx_call + "' does not look like a valid callsign."))
-                                      default=serialize_everything))
                 self.set_header("Cache-Control", "no-store")
                 self.set_header("Content-Type", "application/json")
                 return
             if not re.match(r"^[A-Za-z0-9/\-]*$", spot.de_call):
                 self.set_status(422)
-                self.write(json.dumps("Error - '" + spot.de_call + "' does not look like a valid callsign.",
+                self.write(safe_json_dumps("Error - '" + spot.de_call + "' does not look like a valid callsign."))
-                                      default=serialize_everything))
                 self.set_header("Cache-Control", "no-store")
                 self.set_header("Content-Type", "application/json")
                 return
@@ -106,8 +91,7 @@ class APISpotHandler(tornado.web.RequestHandler):
             # Reject if frequency not in a known band
             if infer_band_from_freq(spot.freq) == UNKNOWN_BAND:
                 self.set_status(422)
-                self.write(json.dumps("Error - Frequency of " + str(spot.freq / 1000.0) + "kHz is not in a known band.",
+                self.write(safe_json_dumps("Error - Frequency of " + str(spot.freq / 1000.0) + "kHz is not in a known band."))
-                                      default=serialize_everything))
                 self.set_header("Cache-Control", "no-store")
                 self.set_header("Content-Type", "application/json")
                 return
@@ -117,8 +101,7 @@ class APISpotHandler(tornado.web.RequestHandler):
                     r"^([A-R]{2}[0-9]{2}[A-X]{2}[0-9]{2}[A-X]{2}|[A-R]{2}[0-9]{2}[A-X]{2}[0-9]{2}|[A-R]{2}[0-9]{2}[A-X]{2}|[A-R]{2}[0-9]{2})$",
                     spot.dx_grid.upper()):
                 self.set_status(422)
-                self.write(json.dumps("Error - '" + spot.dx_grid + "' does not look like a valid Maidenhead grid.",
+                self.write(safe_json_dumps("Error - '" + spot.dx_grid + "' does not look like a valid Maidenhead grid."))
-                                      default=serialize_everything))
                 self.set_header("Cache-Control", "no-store")
                 self.set_header("Content-Type", "application/json")
                 return
@@ -127,9 +110,8 @@ class APISpotHandler(tornado.web.RequestHandler):
             if spot.sig and spot.sig_refs and len(spot.sig_refs) > 0 and spot.sig_refs[0].id and get_ref_regex_for_sig(
                     spot.sig) and not re.match(get_ref_regex_for_sig(spot.sig), spot.sig_refs[0].id):
                 self.set_status(422)
-                self.write(json.dumps(
+                self.write(safe_json_dumps(
-                    "Error - '" + spot.sig_refs[0].id + "' does not look like a valid reference for " + spot.sig + ".",
+                    "Error - '" + spot.sig_refs[0].id + "' does not look like a valid reference for " + spot.sig + "."))
-                    default=serialize_everything))
                 self.set_header("Cache-Control", "no-store")
                 self.set_header("Content-Type", "application/json")
                 return
@@ -137,16 +119,16 @@ class APISpotHandler(tornado.web.RequestHandler):
             # infer missing data, and add it to our database.
             spot.source = "API"
             spot.infer_missing()
-            self._spots.add(spot.id, spot, expire=MAX_SPOT_AGE)
+            self._spots.set(spot.id, spot)
 
-            self.write(json.dumps("OK", default=serialize_everything))
+            self.write(safe_json_dumps("OK"))
             self.set_status(201)
             self.set_header("Cache-Control", "no-store")
             self.set_header("Content-Type", "application/json")
 
         except Exception as e:
-            logging.error(e)
+            logging.error("Exception when handling client request to add spot API: %s", e, exc_info=True)
-            self.write(json.dumps("Error - an internal server error occurred.", default=serialize_everything))
+            self.write(safe_json_dumps("Error - an internal server error occurred."))
             self.set_status(500)
             self.set_header("Cache-Control", "no-store")
             self.set_header("Content-Type", "application/json")

server/handlers/api/alerts.py

@@ -1,8 +1,6 @@
 import copy
-import json
 import logging
 from datetime import datetime
-from queue import Queue
 from typing import Any
 
 import pytz
@@ -12,12 +10,9 @@ from tornado import httputil
 from tornado.web import Application
 
 from core.prometheus_metrics_handler import api_requests_counter
-from core.utils import serialize_everything, empty_queue
+from core.utils import safe_json_dumps
 from data.lookup_credentials import extract_credentials
 
-SSE_HANDLER_MAX_QUEUE_SIZE = 100
-SSE_HANDLER_QUEUE_CHECK_INTERVAL = 5000
-
 
 class APIAlertsHandler(tornado.web.RequestHandler):
     """API request handler for /api/v1/alerts"""
@@ -57,15 +52,14 @@ class APIAlertsHandler(tornado.web.RequestHandler):
             data = get_alert_list_with_filters(self._alerts, query_params)
             if credentials:
                 data = self._enrich(data, credentials)
-            self.write(json.dumps(data, default=serialize_everything))
+            self.write(safe_json_dumps(data))
             self.set_status(200)
         except ValueError as e:
-            logging.error(e)
+            self.write(safe_json_dumps("Bad request - " + str(e)))
-            self.write(json.dumps("Bad request - " + str(e), default=serialize_everything))
             self.set_status(400)
         except Exception as e:
-            logging.error(e)
+            logging.error("Exception when handling client request to alerts API: %s", e, exc_info=True)
-            self.write(json.dumps("Error - an internal server error occurred.", default=serialize_everything))
+            self.write(safe_json_dumps("Error - an internal server error occurred."))
             self.set_status(500)
         self.set_header("Cache-Control", "no-store")
         self.set_header("Content-Type", "application/json")
@@ -75,16 +69,14 @@ class APIAlertsStreamHandler(tornado_eventsource.handler.EventSourceHandler):
     """API request handler for /api/v1/alerts/stream"""
 
     def __init__(self, application, request, **kwargs: Any):
-        self._sse_alert_queues = None
+        self._sse_alert_broadcaster = None
         self._web_server_metrics = None
         self._query_params = None
         self._credentials = None
-        self._alert_queue = None
-        self._heartbeat = None
         super().__init__(application, request, **kwargs)
 
-    def initialize(self, sse_alert_queues, web_server_metrics):
+    def initialize(self, _sse_alert_broadcaster, web_server_metrics):
-        self._sse_alert_queues = sse_alert_queues
+        self._sse_alert_broadcaster = _sse_alert_broadcaster
         self._web_server_metrics = web_server_metrics
 
     def custom_headers(self):
@@ -106,59 +98,32 @@ class APIAlertsStreamHandler(tornado_eventsource.handler.EventSourceHandler):
             self._query_params = {k: v[0].decode("utf-8") for k, v in self.request.arguments.items()}
             self._credentials = extract_credentials(self._query_params)
 
-            # Create a alert queue and add it to the web server's list. The web server will fill this when alerts arrive
-            self._alert_queue = Queue(maxsize=SSE_HANDLER_MAX_QUEUE_SIZE)
-            self._sse_alert_queues.append(self._alert_queue)
-
-            # Set up a timed callback to check if anything is in the queue
-            self._heartbeat = tornado.ioloop.PeriodicCallback(self._callback, SSE_HANDLER_QUEUE_CHECK_INTERVAL)
-            self._heartbeat.start()
-
             # Flush headers immediately so nginx doesn't time out waiting for a response
             self.write_message("keepalive", "")
 
+            # Register to handle new alerts arriving. The callback() method will get called with the new alert as an
+            # argument.
+            self._sse_alert_broadcaster.register(self)
+
         except Exception as e:
             logging.warning("Exception when serving SSE socket: %s", e, exc_info=True)
             self.close()
 
     def close(self):
-        """When the user closes the socket, empty our queue and remove it from the list so the server no longer fills it"""
+        """When the user closes the socket, deregister ourselves from the alert broadcaster"""
 
-        try:
+        self._sse_alert_broadcaster.unregister(self)
-            if self._alert_queue in self._sse_alert_queues:
-                self._sse_alert_queues.remove(self._alert_queue)
-            empty_queue(self._alert_queue)
-        except:
-            pass
-        try:
-            self._heartbeat.stop()
-        except:
-            pass
-        self._alert_queue = None
         super().close()
 
-    def _callback(self):
+    def callback(self, alert):
-        """Callback to check if anything has arrived in the queue, and if so send it to the client"""
+        """Callback when a new alert arrives"""
 
         try:
-            if self._alert_queue:
-                if not self._alert_queue.empty():
-                    while not self._alert_queue.empty():
-                        alert = self._alert_queue.get()
-                        # If the new alert matches our param filters, send it to the client. If not, ignore it.
             if alert_allowed_by_query(alert, self._query_params):
                 if self._credentials:
                     alert = copy.deepcopy(alert)
                     alert.infer_missing(self._credentials)
-                            self.write_message(msg=json.dumps(alert, default=serialize_everything))
+                self.write_message(msg=safe_json_dumps(alert))
-
-                else:
-                    # Send a keepalive comment if the queue was empty
-                    self.write_message("keepalive", "")
-
-                if self._alert_queue not in self._sse_alert_queues:
-                    logging.error("Web server cleared up a queue of an active connection!")
-                    self.close()
         except Exception as e:
             logging.warning("Exception in SSE callback, connection will be closed: %s", e, exc_info=True)
             self.close()
@@ -171,7 +136,7 @@ def get_alert_list_with_filters(all_alerts, query):
     # Create a shallow copy of the alert list ordered by start time, then filter the list to reduce it only to alerts
     # that match the filter parameters in the query string. Finally, apply a limit to the number of alerts returned.
     # The list of query string filters is defined in the API docs.
-    alert_ids = list(all_alerts.iterkeys())
+    alert_ids = all_alerts.keys()
     alerts = []
     for k in alert_ids:
         a = all_alerts.get(k)

server/handlers/api/dxstats.py

@@ -1,4 +1,5 @@
 import json
+import logging
 from collections import Counter
 from datetime import datetime, timedelta
 from typing import Any
@@ -9,6 +10,7 @@ from tornado import httputil
 from tornado.web import Application
 
 from core.prometheus_metrics_handler import api_requests_counter
+from core.utils import safe_json_dumps
 
 CONTINENTS = ["EU", "NA", "SA", "AS", "AF", "OC", "AN"]
 BANDS = ["160m", "80m", "60m", "40m", "30m", "20m", "17m", "15m", "12m", "10m", "6m"]
@@ -29,6 +31,7 @@ class APIDxStatsHandler(tornado.web.RequestHandler):
         self._web_server_metrics = web_server_metrics
 
     def get(self):
+        try:
             self._web_server_metrics["last_api_access_time"] = datetime.now(pytz.UTC)
             self._web_server_metrics["api_access_counter"] += 1
             self._web_server_metrics["status"] = "OK"
@@ -37,7 +40,7 @@ class APIDxStatsHandler(tornado.web.RequestHandler):
             one_hour_ago = (datetime.now(pytz.UTC) - timedelta(hours=1)).timestamp()
             counts = Counter()
 
-        for key in self._spots.iterkeys():
+            for key in self._spots.keys():
                 spot = self._spots.get(key)
                 if spot is None:
                     continue
@@ -55,3 +58,8 @@ class APIDxStatsHandler(tornado.web.RequestHandler):
             self.set_status(200)
             self.set_header("Cache-Control", "no-store")
             self.set_header("Content-Type", "application/json")
+
+        except Exception as e:
+            logging.error("Exception when handling client request to dx stats API: %s", e, exc_info=True)
+            self.write(safe_json_dumps("Error - an internal server error occurred."))
+            self.set_status(500)

server/handlers/api/lookups.py

@@ -1,4 +1,3 @@
-import json
 import logging
 import re
 from datetime import datetime
@@ -13,7 +12,7 @@ from core.constants import SIGS
 from core.geo_utils import lat_lon_for_grid_sw_corner_plus_size, lat_lon_to_cq_zone, lat_lon_to_itu_zone
 from core.prometheus_metrics_handler import api_requests_counter
 from core.sig_utils import get_ref_regex_for_sig, populate_sig_ref_info
-from core.utils import serialize_everything
+from core.utils import safe_json_dumps
 from data.lookup_credentials import extract_credentials
 from data.sig_ref import SIGRef
 from data.spot import Spot
@@ -65,19 +64,18 @@ class APILookupCallHandler(tornado.web.RequestHandler):
                         "longitude": fake_spot.dx_longitude,
                         "location_source": fake_spot.dx_location_source
                     }
-                    self.write(json.dumps(data, default=serialize_everything))
+                    self.write(safe_json_dumps(data))
 
                 else:
-                    self.write(json.dumps("Error - '" + call + "' does not look like a valid callsign.",
+                    self.write(safe_json_dumps("Error - '" + call + "' does not look like a valid callsign."))
-                                          default=serialize_everything))
                     self.set_status(422)
             else:
-                self.write(json.dumps("Error - call must be provided", default=serialize_everything))
+                self.write(safe_json_dumps("Error - call must be provided"))
                 self.set_status(422)
 
         except Exception as e:
-            logging.error(e)
+            logging.error("Exception when handling client request to call lookup API: %s", e, exc_info=True)
-            self.write(json.dumps("Error - an internal server error occurred.", default=serialize_everything))
+            self.write(safe_json_dumps("Error - an internal server error occurred."))
             self.set_status(500)
 
         self.set_header("Cache-Control", "no-store")
@@ -111,27 +109,25 @@ class APILookupSIGRefHandler(tornado.web.RequestHandler):
             if "sig" in query_params.keys() and "id" in query_params.keys():
                 sig = str(query_params.get("sig")).upper()
                 ref_id = str(query_params.get("id")).upper()
-                if sig in list(map(lambda p: p.name, SIGS)):
+                if sig in list(map(lambda p: p.name.upper(), SIGS)):
                     if not get_ref_regex_for_sig(sig) or re.match(get_ref_regex_for_sig(sig), ref_id):
                         data = populate_sig_ref_info(SIGRef(id=ref_id, sig=sig))
-                        self.write(json.dumps(data, default=serialize_everything))
+                        self.write(safe_json_dumps(data))
 
                     else:
-                        self.write(
+                        self.write(safe_json_dumps(
-                            json.dumps(
+                                "Error - '" + ref_id + "' does not look like a valid reference ID for " + sig + "."))
-                                "Error - '" + ref_id + "' does not look like a valid reference ID for " + sig + ".",
-                                default=serialize_everything))
                         self.set_status(422)
                 else:
-                    self.write(json.dumps("Error - sig '" + sig + "' is not known.", default=serialize_everything))
+                    self.write(safe_json_dumps("Error - sig '" + sig + "' is not known."))
                     self.set_status(422)
             else:
-                self.write(json.dumps("Error - sig and id must be provided", default=serialize_everything))
+                self.write(safe_json_dumps("Error - sig and id must be provided"))
                 self.set_status(422)
 
         except Exception as e:
-            logging.error(e)
+            logging.error("Exception when handling client request to sig ref lookup API: %s", e, exc_info=True)
-            self.write(json.dumps("Error - an internal server error occurred.", default=serialize_everything))
+            self.write(safe_json_dumps("Error - an internal server error occurred."))
             self.set_status(500)
 
         self.set_header("Cache-Control", "no-store")
@@ -185,15 +181,15 @@ class APILookupGridHandler(tornado.web.RequestHandler):
                             "latitude": lat + lat_cell_size,
                             "longitude": lon + lon_cell_size,
                         }}
-                    self.write(json.dumps(response, default=serialize_everything))
+                    self.write(safe_json_dumps(response))
 
             else:
-                self.write(json.dumps("Error - grid must be provided", default=serialize_everything))
+                self.write(safe_json_dumps("Error - grid must be provided"))
                 self.set_status(422)
 
         except Exception as e:
-            logging.error(e)
+            logging.error("Exception when handling client request to grid ref lookup API: %s", e, exc_info=True)
-            self.write(json.dumps("Error - an internal server error occurred.", default=serialize_everything))
+            self.write(safe_json_dumps("Error - an internal server error occurred."))
             self.set_status(500)
 
         self.set_header("Cache-Control", "no-store")

server/handlers/api/options.py

@@ -1,4 +1,4 @@
-import json
+import logging
 from datetime import datetime
 from typing import Any
 
@@ -10,7 +10,7 @@ from tornado.web import Application
 from core.config import MAX_SPOT_AGE, ALLOW_SPOTTING
 from core.constants import BANDS, ALL_MODES, MODE_TYPES, SIGS, CONTINENTS, PROPAGATION_MODES
 from core.prometheus_metrics_handler import api_requests_counter
-from core.utils import serialize_everything
+from core.utils import safe_json_dumps
 
 
 class APIOptionsHandler(tornado.web.RequestHandler):
@@ -26,6 +26,7 @@ class APIOptionsHandler(tornado.web.RequestHandler):
         self._web_server_metrics = web_server_metrics
 
     def get(self):
+        try:
             # Metrics
             self._web_server_metrics["last_api_access_time"] = datetime.now(pytz.UTC)
             self._web_server_metrics["api_access_counter"] += 1
@@ -50,7 +51,12 @@ class APIOptionsHandler(tornado.web.RequestHandler):
             if ALLOW_SPOTTING:
                 options["spot_sources"].append("API")
 
-        self.write(json.dumps(options, default=serialize_everything))
+            self.write(safe_json_dumps(options))
             self.set_status(200)
             self.set_header("Cache-Control", "no-store")
             self.set_header("Content-Type", "application/json")
+
+        except Exception as e:
+            logging.error("Exception when handling client request to options API: %s", e, exc_info=True)
+            self.write(safe_json_dumps("Error - an internal server error occurred."))
+            self.set_status(500)

server/handlers/api/solar_conditions.py

@@ -1,3 +1,4 @@
+import logging
 from datetime import datetime
 from typing import Any
 
@@ -7,6 +8,7 @@ from tornado import httputil
 from tornado.web import Application
 
 from core.prometheus_metrics_handler import api_requests_counter
+from core.utils import safe_json_dumps
 
 
 class APISolarConditionsHandler(tornado.web.RequestHandler):
@@ -22,6 +24,7 @@ class APISolarConditionsHandler(tornado.web.RequestHandler):
         self._web_server_metrics = web_server_metrics
 
     def get(self):
+        try:
             # Metrics
             self._web_server_metrics["last_api_access_time"] = datetime.now(pytz.UTC)
             self._web_server_metrics["api_access_counter"] += 1
@@ -32,3 +35,8 @@ class APISolarConditionsHandler(tornado.web.RequestHandler):
             self.set_status(200)
             self.set_header("Cache-Control", "no-store")
             self.set_header("Content-Type", "application/json")
+
+        except Exception as e:
+            logging.error("Exception when handling client request to solar conditions API: %s", e, exc_info=True)
+            self.write(safe_json_dumps("Error - an internal server error occurred."))
+            self.set_status(500)

server/handlers/api/spots.py

@@ -1,8 +1,6 @@
 import copy
-import json
 import logging
 from datetime import datetime, timedelta
-from queue import Queue
 from typing import Any
 
 import pytz
@@ -12,12 +10,9 @@ from tornado import httputil
 from tornado.web import Application
 
 from core.prometheus_metrics_handler import api_requests_counter
-from core.utils import serialize_everything, empty_queue
+from core.utils import safe_json_dumps
 from data.lookup_credentials import extract_credentials
 
-SSE_HANDLER_MAX_QUEUE_SIZE = 1000
-SSE_HANDLER_QUEUE_CHECK_INTERVAL = 5000
-
 
 class APISpotsHandler(tornado.web.RequestHandler):
     """API request handler for /api/v1/spots"""
@@ -57,15 +52,14 @@ class APISpotsHandler(tornado.web.RequestHandler):
             data = get_spot_list_with_filters(self._spots, query_params)
             if credentials:
                 data = self._enrich(data, credentials)
-            self.write(json.dumps(data, default=serialize_everything))
+            self.write(safe_json_dumps(data))
             self.set_status(200)
         except ValueError as e:
-            logging.error(e)
+            self.write(safe_json_dumps("Bad request - " + str(e)))
-            self.write(json.dumps("Bad request - " + str(e), default=serialize_everything))
             self.set_status(400)
         except Exception as e:
-            logging.error(e)
+            logging.error("Excedption when handling client request to spots API: %s", e, exc_info=True)
-            self.write(json.dumps("Error - an internal server error occurred.", default=serialize_everything))
+            self.write(safe_json_dumps("Error - an internal server error occurred."))
             self.set_status(500)
         self.set_header("Cache-Control", "no-store")
         self.set_header("Content-Type", "application/json")
@@ -75,16 +69,14 @@ class APISpotsStreamHandler(tornado_eventsource.handler.EventSourceHandler):
     """API request handler for /api/v1/spots/stream"""
 
     def __init__(self, application, request, **kwargs: Any):
-        self._sse_spot_queues = None
+        self._sse_spot_broadcaster = None
         self._web_server_metrics = None
         self._query_params = None
         self._credentials = None
-        self._spot_queue = None
-        self._heartbeat = None
         super().__init__(application, request, **kwargs)
 
-    def initialize(self, sse_spot_queues, web_server_metrics):
+    def initialize(self, sse_spot_broadcaster, web_server_metrics):
-        self._sse_spot_queues = sse_spot_queues
+        self._sse_spot_broadcaster = sse_spot_broadcaster
         self._web_server_metrics = web_server_metrics
 
     def custom_headers(self):
@@ -108,59 +100,33 @@ class APISpotsStreamHandler(tornado_eventsource.handler.EventSourceHandler):
             self._query_params = {k: v[0].decode("utf-8") for k, v in self.request.arguments.items()}
             self._credentials = extract_credentials(self._query_params)
 
-            # Create a spot queue and add it to the web server's list. The web server will fill this when spots arrive
-            self._spot_queue = Queue(maxsize=SSE_HANDLER_MAX_QUEUE_SIZE)
-            self._sse_spot_queues.append(self._spot_queue)
-
-            # Set up a timed callback to check if anything is in the queue
-            self._heartbeat = tornado.ioloop.PeriodicCallback(self._callback, SSE_HANDLER_QUEUE_CHECK_INTERVAL)
-            self._heartbeat.start()
-
             # Flush headers immediately so nginx doesn't time out waiting for a response
             self.write_message("keepalive", "")
 
+            # Register to handle new spots arriving. The callback() method will get called with the new spot as an
+            # argument.
+            self._sse_spot_broadcaster.register(self)
+
         except Exception as e:
             logging.warning("Exception when serving SSE socket: %s", e, exc_info=True)
             self.close()
 
     def close(self):
-        """When the user closes the socket, empty our queue and remove it from the list so the server no longer fills it"""
+        """When the user closes the socket, deregister ourselves from the spot broadcaster"""
 
-        try:
+        self._sse_spot_broadcaster.unregister(self)
-            if self._spot_queue in self._sse_spot_queues:
-                self._sse_spot_queues.remove(self._spot_queue)
-            empty_queue(self._spot_queue)
-        except:
-            pass
-        try:
-            self._heartbeat.stop()
-        except:
-            pass
-        self._spot_queue = None
         super().close()
 
-    def _callback(self):
+    def callback(self, spot):
-        """Callback to check if anything has arrived in the queue, and if so send it to the client"""
+        """Callback when a new spot arrives"""
 
         try:
-            if self._spot_queue:
-                if not self._spot_queue.empty():
-                    while not self._spot_queue.empty():
-                        spot = self._spot_queue.get()
             # If the new spot matches our param filters, send it to the client. If not, ignore it.
             if spot_allowed_by_query(spot, self._query_params):
                 if self._credentials:
                     spot = copy.deepcopy(spot)
                     spot.infer_missing(self._credentials)
-                            self.write_message(msg=json.dumps(spot, default=serialize_everything))
+                self.write_message(msg=safe_json_dumps(spot))
-
-                else:
-                    # Send a keepalive comment if the queue was empty
-                    self.write_message("keepalive", "")
-
-                if self._spot_queue not in self._sse_spot_queues:
-                    logging.error("Web server cleared up a queue of an active connection!")
-                    self.close()
         except Exception as e:
             logging.warning("Exception in SSE callback, connection will be closed: %s", e, exc_info=True)
             self.close()
@@ -173,7 +139,7 @@ def get_spot_list_with_filters(all_spots, query):
     # Create a shallow copy of the spot list, ordered by spot time, then filter the list to reduce it only to spots
     # that match the filter parameters in the query string. Finally, apply a limit to the number of spots returned.
     # The list of query string filters is defined in the API docs.
-    spot_ids = list(all_spots.iterkeys())
+    spot_ids = all_spots.keys()
     spots = []
     for k in spot_ids:
         s = all_spots.get(k)

server/handlers/api/status.py

@@ -1,4 +1,4 @@
-import json
+import logging
 from datetime import datetime
 from typing import Any
 
@@ -8,7 +8,7 @@ from tornado import httputil
 from tornado.web import Application
 
 from core.prometheus_metrics_handler import api_requests_counter
-from core.utils import serialize_everything
+from core.utils import safe_json_dumps
 
 
 class APIStatusHandler(tornado.web.RequestHandler):
@@ -24,13 +24,19 @@ class APIStatusHandler(tornado.web.RequestHandler):
         self._web_server_metrics = web_server_metrics
 
     def get(self):
+        try:
             # Metrics
             self._web_server_metrics["last_api_access_time"] = datetime.now(pytz.UTC)
             self._web_server_metrics["api_access_counter"] += 1
             self._web_server_metrics["status"] = "OK"
             api_requests_counter.inc()
 
-        self.write(json.dumps(self._status_data, default=serialize_everything))
+            self.write(safe_json_dumps(self._status_data))
             self.set_status(200)
             self.set_header("Cache-Control", "no-store")
             self.set_header("Content-Type", "application/json")
+
+        except Exception as e:
+            logging.error("Exception when handling client request to status API: %s", e, exc_info=True)
+            self.write(safe_json_dumps("Error - an internal server error occurred."))
+            self.set_status(500)

server/handlers/manifesthandler.py

@@ -0,0 +1,11 @@
+import tornado.web
+
+from core.config import BASE_URL
+
+
+class ManifestHandler(tornado.web.RequestHandler):
+    """Handler for manifest.webmanifest, which needs BASE_URL inserted and a custom content-type"""
+
+    def get(self):
+        self.set_header("Content-Type", "application/manifest+json; charset=UTF-8")
+        self.render("manifest.webmanifest", baseurl=BASE_URL)

server/sse_broadcaster.py

@@ -0,0 +1,36 @@
+import logging
+import threading
+
+from tornado.ioloop import IOLoop
+
+
+class SSEBroadcaster:
+    """Bridge between DataStore listener callbacks (which fire on provider threads) to Tornado's async SSE handlers
+    (which live on the IOLoop thread) to avoid any interdependency between them."""
+
+    def __init__(self):
+        self._handlers = set()
+        self._lock = threading.Lock()
+        self._loop = IOLoop.current()
+
+    def register(self, handler):
+        with self._lock:
+            self._handlers.add(handler)
+
+    def unregister(self, handler):
+        with self._lock:
+            self._handlers.discard(handler)
+
+    def publish(self, value):
+        self._loop.add_callback(self._fan_out, value)
+
+    def _fan_out(self, value):
+        with self._lock:
+            handlers = list(self._handlers)
+        for handler in handlers:
+            try:
+                handler.callback(value)
+            except Exception:
+                # Connection probably dropped, ignore and de-register the handler to stop getting future items.
+                logging.debug("Failed to push to an SSE client; dropping it")
+                self.unregister(handler)

server/webserver.py

@@ -5,8 +5,8 @@ import os
 import tornado
 from tornado.web import StaticFileHandler
 
-from core.config import ALLOW_SPOTTING, WEB_SERVER_PORT, API_ONLY_MODE
+from core.config import ALLOW_SPOTTING, WEB_SERVER_PORT, API_ONLY_MODE, LOG_WEB_REQUESTS, BASE_URL
-from core.utils import empty_queue
+from core.data_store import DATA_STORE
 from server.handlers.api.addspot import APISpotHandler
 from server.handlers.api.alerts import APIAlertsHandler, APIAlertsStreamHandler
 from server.handlers.api.dxstats import APIDxStatsHandler
@@ -15,8 +15,10 @@ from server.handlers.api.options import APIOptionsHandler
 from server.handlers.api.solar_conditions import APISolarConditionsHandler
 from server.handlers.api.spots import APISpotsHandler, APISpotsStreamHandler
 from server.handlers.api.status import APIStatusHandler
+from server.handlers.manifesthandler import ManifestHandler
 from server.handlers.metrics import PrometheusMetricsHandler
 from server.handlers.pagetemplate import PageTemplateHandler
+from server.sse_broadcaster import SSEBroadcaster
 
 _HERE = os.path.dirname(__file__ or "")
 
@@ -24,15 +26,12 @@ _HERE = os.path.dirname(__file__ or "")
 class WebServer:
     """Provides the public-facing web server."""
 
-    def __init__(self, spots, alerts, solar_conditions, status_data):
+    def __init__(self):
         """Constructor"""
 
-        self._spots = spots
+        self._data_store = DATA_STORE
-        self._alerts = alerts
+        self._spot_broadcaster = SSEBroadcaster()
-        self._solar_conditions = solar_conditions
+        self._alert_broadcaster = SSEBroadcaster()
-        self._sse_spot_queues = []
-        self._sse_alert_queues = []
-        self._status_data = status_data
         self._port = WEB_SERVER_PORT
         self._api_only_mode = API_ONLY_MODE
         self._shutdown_event = asyncio.Event()
@@ -44,6 +43,10 @@ class WebServer:
             "status": "Starting"
         }
 
+        # Listen for new spots and alerts being added to the cache, so we can notify SSE clients immediately
+        DATA_STORE.spots.add_listener(self._spot_broadcaster.publish)
+        DATA_STORE.alerts.add_listener(self._alert_broadcaster.publish)
+
     def start(self):
         """Start the web server"""
 
@@ -63,20 +66,21 @@ class WebServer:
 
         # API endpoints are always enabled
         api_routes = [
-            (r"/api/v1/spots", APISpotsHandler, {"spots": self._spots, **handler_opts}),
+            (r"/api/v1/spots", APISpotsHandler, {"spots": self._data_store.spots, **handler_opts}),
-            (r"/api/v1/alerts", APIAlertsHandler, {"alerts": self._alerts, **handler_opts}),
+            (r"/api/v1/alerts", APIAlertsHandler, {"alerts": self._data_store.alerts, **handler_opts}),
             (r"/api/v1/spots/stream", APISpotsStreamHandler,
-             {"sse_spot_queues": self._sse_spot_queues, **handler_opts}),
+             {"sse_spot_broadcaster": self._spot_broadcaster, **handler_opts}),
             (r"/api/v1/alerts/stream", APIAlertsStreamHandler,
-             {"sse_alert_queues": self._sse_alert_queues, **handler_opts}),
+             {"sse_alert_broadcaster": self._alert_broadcaster, **handler_opts}),
-            (r"/api/v1/solar", APISolarConditionsHandler, {"solar_conditions": self._solar_conditions, **handler_opts}),
+            (r"/api/v1/solar", APISolarConditionsHandler, {"solar_conditions": self._data_store.solar_conditions,
-            (r"/api/v1/dxstats", APIDxStatsHandler, {"spots": self._spots, **handler_opts}),
+                                                           **handler_opts}),
-            (r"/api/v1/options", APIOptionsHandler, {"status_data": self._status_data, **handler_opts}),
+            (r"/api/v1/dxstats", APIDxStatsHandler, {"spots": self._data_store.spots, **handler_opts}),
-            (r"/api/v1/status", APIStatusHandler, {"status_data": self._status_data, **handler_opts}),
+            (r"/api/v1/options", APIOptionsHandler, {"status_data": self._data_store.status_data, **handler_opts}),
+            (r"/api/v1/status", APIStatusHandler, {"status_data": self._data_store.status_data, **handler_opts}),
             (r"/api/v1/lookup/call", APILookupCallHandler, {**handler_opts}),
             (r"/api/v1/lookup/sigref", APILookupSIGRefHandler, {**handler_opts}),
             (r"/api/v1/lookup/grid", APILookupGridHandler, {**handler_opts}),
-            (r"/api/v1/spot", APISpotHandler, {"spots": self._spots, **handler_opts}),
+            (r"/api/v1/spot", APISpotHandler, {"spots": self._data_store.spots, **handler_opts}),
         ]
 
         # If in API-only mode, serve a basic homepage; in normal mode, serve the usual UI routes
@@ -99,11 +103,16 @@ class WebServer:
             if ALLOW_SPOTTING:
                 ui_routes += [(r"/add-spot", PageTemplateHandler, {"template_name": "add_spot", **handler_opts})]
 
-        # API docs, Prometheus metrics, and finally static assets are always available regardless of API-only mode.
+        # API docs, Prometheus metrics, webapp manifest and static assets are always available regardless of API-only
+        # mode.
         misc_routes = [
             (r"/apidocs", PageTemplateHandler, {"template_name": "apidocs", **handler_opts}),
             (r"/metrics", PrometheusMetricsHandler),
-            (r"/(.*)", StaticFileHandler, {"path": os.path.join(_HERE, "../webassets")})
+            (r"/manifest.webmanifest", ManifestHandler),
+            # If e.g. nginx is configured as a reverse proxy with a hard-coded path to static files, as per the README,
+            # this will never have to handle anything, but having it here allows Spothole to work without nginx for
+            # testing.
+            (r"/static/(.*)", StaticFileHandler, {"path": os.path.join(_HERE, "../static")})
         ]
 
         app = tornado.web.Application(api_routes + ui_routes + misc_routes,
@@ -112,61 +121,15 @@ class WebServer:
                                       debug=False)
         app.listen(self._port, xheaders=True)
         logging.info("Web server running on port " + str(WEB_SERVER_PORT))
+        logging.info("You can access your copy of Spothole at " + BASE_URL)
         await self._shutdown_event.wait()
 
-    def notify_new_spot(self, spot):
-        """Internal method called when a new spot is added to the system. This is used to ping any SSE clients that are
-        awaiting a server-sent message with new spots."""
-
-        for queue in self._sse_spot_queues:
-            try:
-                queue.put(spot)
-            except:
-                # Cleanup thread was probably deleting the queue, that's fine
-                pass
-        pass
-
-    def notify_new_alert(self, alert):
-        """Internal method called when a new alert is added to the system. This is used to ping any SSE clients that are
-        awaiting a server-sent message with new spots."""
-
-        for queue in self._sse_alert_queues:
-            try:
-                queue.put(alert)
-            except:
-                # Cleanup thread was probably deleting the queue, that's fine
-                pass
-        pass
-
-    def clean_up_sse_queues(self):
-        """Clean up any SSE queues that are growing too large; probably their client disconnected and we didn't catch it
-        properly for some reason."""
-
-        for q in self._sse_spot_queues:
-            try:
-                if q.full():
-                    logging.warning(
-                        "A full SSE spot queue was found, presumably because the client disconnected strangely. It has been removed.")
-                    self._sse_spot_queues.remove(q)
-                    empty_queue(q)
-            except:
-                # Probably got deleted already on another thread
-                pass
-        for q in self._sse_alert_queues:
-            try:
-                if q.full():
-                    logging.warning(
-                        "A full SSE alert queue was found, presumably because the client disconnected strangely. It has been removed.")
-                    self._sse_alert_queues.remove(q)
-                    empty_queue(q)
-            except:
-                # Probably got deleted already on another thread
-                pass
-        pass
 
 def request_log(handler):
-    """Custom log function to provide more data about requests."""
+    """Custom log function to provide more data about requests when enabled, and to provide the ability to turn off
+    web request logging altogetether."""
 
+    if LOG_WEB_REQUESTS:
         if handler.get_status() < 500:
             log_method = logging.info
         else:

sigrefdataproviders/arlhs.py

@@ -0,0 +1,30 @@
+import csv
+
+from data.sig_ref import SIGRef
+from sigrefdataproviders.file_download_sig_ref_data_provider import FileDownloadSIGRefDataProvider
+
+
+class ARLHS(FileDownloadSIGRefDataProvider):
+    """SIG ref data provider for Amateur Radio Light House Society"""
+
+    POLL_INTERVAL_DAYS = 30
+    SIG = "ARLHS"
+    DATA_URL = "https://www.gma.rocks/download/lighthouse.csv"
+
+    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 = []
+        for row in csv.DictReader(http_response.content.decode("utf-8-sig").splitlines()[1:]):
+            if "ARLHS" in row and row["ARLHS"] != "":
+                ref_id = row["ARLHS"]
+                new_data.append(SIGRef(sig=self.SIG, id=ref_id, name=row["Name"] if "Name" in row else None,
+                                          url="https://www.cqgma.org/zinfo.php?ref=" + ref_id,
+                                          latitude=float(row["Latitude"]) if "Latitude" in row and row[
+                                              "Latitude"] != "" else None,
+                                          longitude=float(row["Longitude"]) if "Longitude" in row and row[
+                                              "Longitude"] != "" else None,
+                                          grid=row["Maidenhead Locator"]))
+
+        return new_data

sigrefdataproviders/dme.py

@@ -0,0 +1,35 @@
+import csv
+
+from pyhamtools.locator import latlong_to_locator
+
+from data.sig_ref import SIGRef
+from sigrefdataproviders.local_file_sig_ref_data_provider import LocalFileSIGRefDataProvider
+
+
+class DME(LocalFileSIGRefDataProvider):
+    """SIG ref data provider for Diploma Municipios de Espana"""
+
+    SIG = "DME"
+    PATH = "datafiles/MUNICIPIOS.csv"
+
+    def __init__(self, provider_config):
+        super().__init__(self.SIG, provider_config, self.PATH)
+
+    def _file_to_data(self, path):
+        new_data = []
+        with open(path, encoding="latin-1") as _f:
+            for row in csv.DictReader(_f, delimiter=";"):
+                ref_id = row["COD_INE"][:5]
+                latitude = float(row["LATITUD_ETRS89_REGCAN95"].replace(",", ".")) if row.get(
+                    "LATITUD_ETRS89_REGCAN95") else None
+                longitude = float(row["LONGITUD_ETRS89_REGCAN95"].replace(",", ".")) if row.get(
+                    "LONGITUD_ETRS89_REGCAN95") else None
+
+                ref = SIGRef(sig=self.SIG, id=ref_id,
+                                          name=row["NOMBRE_ACTUAL"] + ", " + row["PROVINCIA"],
+                                          latitude=latitude,
+                                          longitude=longitude)
+                if latitude and longitude:
+                    ref.grid = latlong_to_locator(latitude, longitude, 6)
+                new_data.append(ref)
+        return new_data

sigrefdataproviders/file_download_sig_ref_data_provider.py

@@ -0,0 +1,77 @@
+import logging
+from datetime import datetime
+from threading import Thread, Event
+
+import pytz
+from requests import ReadTimeout
+from requests.exceptions import ConnectionError, ConnectTimeout
+
+from core.constants import HTTP_HEADERS
+from core.url_data_cache import URL_DATA_CACHE
+from sigrefdataproviders.sig_ref_data_provider import SIGRefDataProvider
+
+
+class FileDownloadSIGRefDataProvider(SIGRefDataProvider):
+    """Generic SIG ref data provider class for providers that fetch their data from the web by downloading a file."""
+
+    def __init__(self, sig_name, provider_config, url, poll_interval):
+        """ Set up the provider, note poll_interval is in *days*."""
+        super().__init__(sig_name, provider_config)
+        self._url = url
+        self._poll_interval = poll_interval
+        self._thread = None
+        self._stop_event = Event()
+
+    def start(self):
+        # Fire off the polling thread. It will poll immediately on startup, then sleep for poll_interval between
+        # subsequent polls, so start() returns immediately and the application can continue starting.
+        logging.info(
+            "Set up query of " + self.sig_name + " SIG ref data every " + str(self._poll_interval) + " days.")
+        self._thread = Thread(target=self._run, daemon=True)
+        self._thread.start()
+
+    def stop(self):
+        self._stop_event.set()
+
+    def _run(self):
+        while True:
+            self._poll()
+            if self._stop_event.wait(timeout=self._poll_interval * 60 * 60 * 24):
+                break
+
+    def _poll(self):
+        try:
+            # Request data from API. Use the data cache (with a TTL of 1 day) here, not as the main mechanism for
+            # caching, but just so continual restarts of the software during testing don't hammer the servers.
+            logging.debug("Downloading " + self.sig_name + " SIG ref data...")
+            http_response = URL_DATA_CACHE.get(self._url, headers=HTTP_HEADERS)
+            # Check response code was good
+            if http_response.ok:
+                # Pass off to the subclass for processing
+                new_data = self._http_response_to_data(http_response)
+                # Submit the new spots for processing. There might not be any spots for the less popular programs.
+                if new_data:
+                    self._add_data(new_data)
+
+                self.status = "OK"
+                self.last_update_time = datetime.now(pytz.UTC)
+                logging.debug("Received SIG ref data for " + self.sig_name)
+            else:
+                self.status = "Error"
+                logging.warning(f"HTTP {http_response.status_code} when downloading SIG ref data for {self.sig_name}.")
+
+        except ConnectionError:
+            logging.warning(f"Connection error when downloading SIG ref data for {self.sig_name}.")
+        except (ConnectTimeout, ReadTimeout):
+            logging.warning(f"Timeout when downloading SIG ref data for {self.sig_name}.")
+        except Exception:
+            self.status = "Error"
+            logging.exception("Exception in HTTP SIG Ref Data Provider (" + self.sig_name + ")")
+            self._stop_event.wait(timeout=1)
+
+    def _http_response_to_data(self, http_response):
+        """Convert an HTTP response returned by the server into SIG Ref data. The whole response is provided here so the
+        subclass implementations can check for HTTP status codes if necessary, and handle the response as JSON, CSV,
+        whatever the remote file actually is."""
+
+        raise NotImplementedError("Subclasses must implement this method")

sigrefdataproviders/gma.py

@@ -0,0 +1,29 @@
+import csv
+
+from data.sig_ref import SIGRef
+from sigrefdataproviders.file_download_sig_ref_data_provider import FileDownloadSIGRefDataProvider
+
+
+class GMA(FileDownloadSIGRefDataProvider):
+    """SIG ref data provider for Global Mountain Activity"""
+
+    POLL_INTERVAL_DAYS = 30
+    SIG = "GMA"
+    DATA_URL = "https://www.gma.rocks/download/summits.csv"
+
+    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 = []
+        for row in csv.DictReader(http_response.content.decode("utf-8-sig").splitlines()[1:]):
+            ref_id = row["Reference"]
+            new_data.append(SIGRef(sig=self.SIG, id=ref_id, name=row["Name"] if "Name" in row else None,
+                                      url="https://www.cqgma.org/zinfo.php?ref=" + ref_id,
+                                      latitude=float(row["Latitude"]) if "Latitude" in row and row[
+                                          "Latitude"] != "" else None,
+                                      longitude=float(row["Longitude"]) if "Longitude" in row and row[
+                                          "Longitude"] != "" else None,
+                                      grid=row["Maidenhead Locator"]))
+
+        return new_data

sigrefdataproviders/illw.py

@@ -0,0 +1,30 @@
+import csv
+
+from data.sig_ref import SIGRef
+from sigrefdataproviders.file_download_sig_ref_data_provider import FileDownloadSIGRefDataProvider
+
+
+class ILLW(FileDownloadSIGRefDataProvider):
+    """SIG ref data provider for International Lighthouse & Lightship Weekend"""
+
+    POLL_INTERVAL_DAYS = 30
+    SIG = "ILLW"
+    DATA_URL = "https://www.gma.rocks/download/lighthouse.csv"
+
+    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 = []
+        for row in csv.DictReader(http_response.content.decode("utf-8-sig").splitlines()[1:]):
+            if "ILLW" in row and row["ILLW"] != "":
+                ref_id = row["ILLW"]
+                new_data.append(SIGRef(sig=self.SIG, id=ref_id, name=row["Name"] if "Name" in row else None,
+                                          url="https://www.cqgma.org/zinfo.php?ref=" + ref_id,
+                                          latitude=float(row["Latitude"]) if "Latitude" in row and row[
+                                              "Latitude"] != "" else None,
+                                          longitude=float(row["Longitude"]) if "Longitude" in row and row[
+                                              "Longitude"] != "" else None,
+                                          grid=row["Maidenhead Locator"]))
+
+        return new_data

sigrefdataproviders/iota.py

@@ -0,0 +1,36 @@
+import logging
+
+from pyhamtools.locator import latlong_to_locator
+
+from data.sig_ref import SIGRef
+from sigrefdataproviders.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))
+
+        return new_data

sigrefdataproviders/llota.py

@@ -0,0 +1,32 @@
+from pyhamtools.locator import locator_to_latlong
+
+from data.sig_ref import SIGRef
+from sigrefdataproviders.file_download_sig_ref_data_provider import FileDownloadSIGRefDataProvider
+
+
+class LLOTA(FileDownloadSIGRefDataProvider):
+    """SIG ref data provider for Lagos y Lagunas on the Air"""
+
+    POLL_INTERVAL_DAYS = 7
+    SIG = "LLOTA"
+    DATA_URL = "https://llota.app/api/public/references"
+
+    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["reference_code"]
+                grid = str(ref["grid_locator"])
+                ll = locator_to_latlong(grid)
+
+                new_data.append(SIGRef(sig=self.SIG, id=ref_id, name=str(ref["name"]),
+                                          url="https://llota.app/list/ref/" + ref_id,
+                                          grid=grid,
+                                          latitude=ll[0],
+                                          longitude=ll[1]))
+
+        return new_data

sigrefdataproviders/local_file_sig_ref_data_provider.py

@@ -0,0 +1,36 @@
+import logging
+from datetime import datetime
+
+import pytz
+
+from sigrefdataproviders.sig_ref_data_provider import SIGRefDataProvider
+
+
+class LocalFileSIGRefDataProvider(SIGRefDataProvider):
+    """Generic SIG ref data provider class for providers that fetch their data from a local file on startup."""
+
+    def __init__(self, sig, provider_config, path):
+        super().__init__(sig, provider_config)
+        self._path = path
+
+    def start(self):
+        logging.debug("Loading " + self.sig_name + " SIG ref data from file.")
+        try:
+            new_data = self._file_to_data(self._path)
+            if new_data:
+                self._add_data(new_data)
+                self.status = "OK"
+                self.last_update_time = datetime.now(pytz.UTC)
+            else:
+                logging.info("No new SIG ref data found for " + self.sig_name)
+        except Exception as e:
+            self.status = "Error"
+            logging.exception("Exception in local file SIG Ref Data Provider (" + self.sig_name + ")")
+
+    def stop(self):
+        pass
+
+    def _file_to_data(self, path):
+        """Load a file on the given path and turn it into SIG Ref data."""
+
+        raise NotImplementedError("Subclasses must implement this method")

sigrefdataproviders/mota.py

@@ -0,0 +1,29 @@
+import csv
+
+from data.sig_ref import SIGRef
+from sigrefdataproviders.file_download_sig_ref_data_provider import FileDownloadSIGRefDataProvider
+
+
+class MOTA(FileDownloadSIGRefDataProvider):
+    """SIG ref data provider for Mills on the Air"""
+
+    POLL_INTERVAL_DAYS = 30
+    SIG = "MOTA"
+    DATA_URL = "https://www.gma.rocks/download/mills.csv"
+
+    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 = []
+        for row in csv.DictReader(http_response.content.decode("utf-8-sig").splitlines()[1:]):
+            ref_id = row["Reference"]
+            new_data.append(SIGRef(sig=self.SIG, id=ref_id, name=row["Name"] if "Name" in row else None,
+                                      url="https://www.cqgma.org/zinfo.php?ref=" + ref_id,
+                                      latitude=float(row["Latitude"]) if "Latitude" in row and row[
+                                          "Latitude"] != "" else None,
+                                      longitude=float(row["Longitude"]) if "Longitude" in row and row[
+                                          "Longitude"] != "" else None,
+                                      grid=row["Maidenhead Locator"]))
+
+        return new_data

sigrefdataproviders/pota.py

@@ -0,0 +1,29 @@
+import csv
+
+from data.sig_ref import SIGRef
+from sigrefdataproviders.file_download_sig_ref_data_provider import FileDownloadSIGRefDataProvider
+
+
+class POTA(FileDownloadSIGRefDataProvider):
+    """SIG ref data provider for Parks on the Air"""
+
+    POLL_INTERVAL_DAYS = 7
+    SIG = "POTA"
+    DATA_URL = "https://pota.app/all_parks_ext.csv"
+
+    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 = []
+        for row in csv.DictReader(http_response.content.decode("utf-8-sig").splitlines()):
+            ref_id = row["reference"]
+            new_data.append(SIGRef(sig=self.SIG, id=ref_id, name=row["name"] if "name" in row else None,
+                                      url="https://pota.app/#/park/" + ref_id,
+                                      grid=row["grid"] if "grid" in row else None,
+                                      latitude=float(row["latitude"]) if "latitude" in row and row[
+                                          "latitude"] != "" else None,
+                                      longitude=float(row["longitude"]) if "longitude" in row and row[
+                                          "longitude"] != "" else None))
+
+        return new_data

sigrefdataproviders/sig_ref_data_provider.py

@@ -0,0 +1,40 @@
+import logging
+from datetime import datetime
+
+import pytz
+
+from core.data_store import DATA_STORE
+
+
+class SIGRefDataProvider:
+    """Generic SIG reference data provider class. Subclasses of this query the individual URLs or files for data."""
+
+    def __init__(self, sig_name, provider_config):
+        """Constructor"""
+
+        self.sig_name = sig_name
+        self.enabled = provider_config["enabled"]
+        self.last_update_time = datetime.min.replace(tzinfo=pytz.UTC)
+        self.last_spot_time = datetime.min.replace(tzinfo=pytz.UTC)
+        self.status = "Not Started" if self.enabled else "Disabled"
+        self.reference_count = 0
+
+
+    def start(self):
+        """Start the provider. This should return immediately after spawning threads to access the remote resources"""
+
+        raise NotImplementedError("Subclasses must implement this method")
+
+
+    def stop(self):
+        """Stop any threads and prepare for application shutdown"""
+
+        raise NotImplementedError("Subclasses must implement this method")
+
+    def _add_data(self, new_data):
+        """Add all the provided reference data objects to the data store."""
+
+        for d in new_data:
+            DATA_STORE.sigrefs[self.sig_name + ":" + d.id] = d
+        self.reference_count = len(new_data)
+        logging.info(f"Loaded %d references for %s into the data store.", self.reference_count, self.sig_name)

sigrefdataproviders/siota.py

@@ -0,0 +1,26 @@
+import csv
+
+from data.sig_ref import SIGRef
+from sigrefdataproviders.file_download_sig_ref_data_provider import FileDownloadSIGRefDataProvider
+
+
+class SIOTA(FileDownloadSIGRefDataProvider):
+    """SIG ref data provider for Silos on the Air"""
+
+    POLL_INTERVAL_DAYS = 30
+    SIG = "SIOTA"
+    DATA_URL = "https://www.silosontheair.com/data/silos.csv"
+
+    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 = []
+        for row in csv.DictReader(http_response.content.decode("utf-8-sig").splitlines()):
+            ref_id = row["SILO_CODE"]
+            new_data.append(SIGRef(sig=self.SIG, id=ref_id, name=row["NAME"] if "NAME" in row else None,
+                                      grid=row["LOCATOR"] if "LOCATOR" in row else None,
+                                      latitude=float(row["LAT"]) if "LAT" in row else None,
+                                      longitude=float(row["LNG"]) if "LNG" in row else None))
+
+        return new_data

sigrefdataproviders/sota.py

@@ -0,0 +1,34 @@
+import csv
+
+from pyhamtools.locator import latlong_to_locator
+
+from data.sig_ref import SIGRef
+from sigrefdataproviders.file_download_sig_ref_data_provider import FileDownloadSIGRefDataProvider
+
+
+class SOTA(FileDownloadSIGRefDataProvider):
+    """SIG ref data provider for Summits on the Air"""
+
+    POLL_INTERVAL_DAYS = 30
+    SIG = "SOTA"
+    DATA_URL = "https://storage.sota.org.uk/summitslist.csv"
+
+    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 = []
+        for row in csv.DictReader(http_response.content.decode("utf-8-sig").splitlines()[1:]):
+            ref_id = row["SummitCode"]
+            latitude = float(row["Latitude"]) if "Latitude" in row and row["Latitude"] != "" else None
+            longitude = float(row["Longitude"]) if "Longitude" in row and row["Longitude"] != "" else None
+            ref = SIGRef(sig=self.SIG, id=ref_id, name=row["SummitName"] if "SummitName" in row else None,
+                                      url="https://www.sotadata.org.uk/en/summit/" + ref_id,
+                                      latitude=latitude,
+                                      longitude=longitude,
+                                      activation_score=int(row["Points"]) if "Points" in row else None)
+            if latitude and longitude:
+                ref.grid = latlong_to_locator(latitude, longitude, 6)
+            new_data.append(ref)
+
+        return new_data

sigrefdataproviders/toilets.py

@@ -0,0 +1,24 @@
+import csv
+
+from data.sig_ref import SIGRef
+from sigrefdataproviders.local_file_sig_ref_data_provider import LocalFileSIGRefDataProvider
+
+
+class Toilets(LocalFileSIGRefDataProvider):
+    """SIG ref data provider for Toilets on the Air"""
+
+    SIG = "Toilets"
+    PATH = "datafiles/toilets.csv"
+
+    def __init__(self, provider_config):
+        super().__init__(self.SIG, provider_config, self.PATH)
+
+    def _file_to_data(self, path):
+        new_data = []
+        f = open(path)
+        csv_data = f.read()
+        dr = csv.DictReader(csv_data.splitlines())
+        for row in dr:
+            new_data.append(SIGRef(sig=self.SIG, id=row["ref"], name=row["ref"], latitude=float(row["lat"]),
+                                          longitude=float(row["lon"])))
+        return new_data

sigrefdataproviders/towers.py

@@ -0,0 +1,27 @@
+import csv
+
+from data.sig_ref import SIGRef
+from sigrefdataproviders.file_download_sig_ref_data_provider import FileDownloadSIGRefDataProvider
+
+
+class Towers(FileDownloadSIGRefDataProvider):
+    """SIG ref data provider for Towers on the Air"""
+
+    POLL_INTERVAL_DAYS = 30
+    SIG = "Towers"
+    DATA_URL = "https://wwtota.com/servis/generate_csv.php?ref=&filter=all"
+
+    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 = []
+        for row in csv.DictReader(http_response.content.decode("utf-8-sig").splitlines(), delimiter=";"):
+            ref_id = row["Ref"]
+            new_data.append(SIGRef(sig=self.SIG, id=ref_id, name=row["Nazev"] if "Nazev" in row else None,
+                                      url="https://wwtota.com/seznam/karta_rozhledny.php?ref=" + ref_id,
+                                      grid=row["Lokator"] if "Lokator" in row and row["Lokator"] != "" else None,
+                                      latitude=float(row["Lat"]) if "Lat" in row and row["Lat"] != "" else None,
+                                      longitude=float(row["Lon"]) if "Lon" in row and row["Lon"] != "" else None))
+
+        return new_data

sigrefdataproviders/wca.py

@@ -0,0 +1,44 @@
+import csv
+import logging
+
+from pyhamtools.locator import latlong_to_locator
+
+from data.sig_ref import SIGRef
+from sigrefdataproviders.file_download_sig_ref_data_provider import FileDownloadSIGRefDataProvider
+
+
+class WCA(FileDownloadSIGRefDataProvider):
+    """SIG ref data provider for World Castles Award"""
+
+    POLL_INTERVAL_DAYS = 30
+    SIG = "WCA"
+    DATA_URL = "https://polo.ham2k.com/data/activities/wca/all-castles.csv"
+
+    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 = []
+        for row in csv.DictReader(http_response.content.decode("utf-8-sig").splitlines()):
+            ref_id = row["REF"]
+
+            coordsStr = row["COORDINATES"]
+            latitude = None
+            longitude = None
+            grid = None
+            try:
+                if coordsStr:
+                    split = coordsStr.split(", ")
+                    latitude = float(split[0])
+                    longitude = float(split[1])
+                    grid = latlong_to_locator(latitude, longitude)
+            except ValueError:
+                logging.debug(f"Encountered dodgy formatting in WCA CSV, skipping location data for %s", ref_id)
+
+            new_data.append(SIGRef(sig=self.SIG, id=ref_id, name=row["CLEAN NAME"] if "CLEAN NAME" in row else None,
+                                      url="https://www.cqgma.org/zinfo.php?ref=" + ref_id,
+                                      latitude=latitude,
+                                      longitude=longitude,
+                                      grid=grid))
+
+        return new_data

sigrefdataproviders/wota.py

@@ -0,0 +1,31 @@
+from data.sig_ref import SIGRef
+from sigrefdataproviders.file_download_sig_ref_data_provider import FileDownloadSIGRefDataProvider
+
+
+class WOTA(FileDownloadSIGRefDataProvider):
+    """SIG ref data provider for Wainwrights on the Air"""
+
+    POLL_INTERVAL_DAYS = 365
+    SIG = "WOTA"
+    DATA_URL = "https://www.wota.org.uk/mapping/data/summits.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 = []
+        for feature in http_response.json().get("features", []):
+            ref_id = feature["properties"]["wotaId"]
+            # Fudge WOTA URLs. Outlying fell (LDO) URLs don't match their ID numbers but require 214 to be
+            # added to them
+            url = "https://www.wota.org.uk/MM_" + ref_id
+            if ref_id.upper().startswith("LDO-"):
+                number = int(ref_id.upper().replace("LDO-", ""))
+                url = "https://www.wota.org.uk/MM_LDO-" + str(number + 214)
+
+            new_data.append(SIGRef(sig=self.SIG, id=ref_id, name=feature["properties"]["title"], url=url,
+                                      grid=feature["properties"]["qthLocator"],
+                                      latitude=feature["geometry"]["coordinates"][1],
+                                      longitude=feature["geometry"]["coordinates"][0]))
+
+        return new_data

sigrefdataproviders/wwbota.py

@@ -0,0 +1,27 @@
+import csv
+
+from data.sig_ref import SIGRef
+from sigrefdataproviders.file_download_sig_ref_data_provider import FileDownloadSIGRefDataProvider
+
+
+class WWBOTA(FileDownloadSIGRefDataProvider):
+    """SIG ref data provider for Worldwide Bunkers on the Air"""
+
+    POLL_INTERVAL_DAYS = 30
+    SIG = "WWBOTA"
+    DATA_URL = "https://api.wwbota.org/bunkers/?format=CSV"
+
+    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 = []
+        for row in csv.DictReader(http_response.content.decode("utf-8-sig").splitlines()):
+            ref_id = row["Reference"]
+            new_data.append(SIGRef(sig=self.SIG, id=ref_id, name=row["Name"] if "Name" in row else None,
+                                      url="https://bunkerwiki.org/?s=" + ref_id if ref_id.startswith("B/G") else None,
+                                      grid=row["Locator"] if "Locator" in row and row["Locator"] != "" else None,
+                                      latitude=float(row["Lat"]) if "Lat" in row and row["Lat"] != "" else None,
+                                      longitude=float(row["Long"]) if "Long" in row and row["Long"] != "" else None))
+
+        return new_data

sigrefdataproviders/wwff.py

@@ -0,0 +1,30 @@
+import csv
+
+from data.sig_ref import SIGRef
+from sigrefdataproviders.file_download_sig_ref_data_provider import FileDownloadSIGRefDataProvider
+
+
+class WWFF(FileDownloadSIGRefDataProvider):
+    """SIG ref data provider for Worldwide Flora & Fauna"""
+
+    POLL_INTERVAL_DAYS = 30
+    SIG = "WWFF"
+    DATA_URL = "https://wwff.co/wwff-data/wwff_directory.csv"
+
+    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 = []
+        for row in csv.DictReader(http_response.content.decode("utf-8-sig").splitlines()):
+            ref_id = row["reference"]
+            new_data.append(SIGRef(sig=self.SIG, id=ref_id, name=row["name"] if "name" in row else None,
+                                      url="https://wwff.co/directory/?showRef=" + ref_id,
+                                      grid=row["iaruLocator"] if "iaruLocator" in row and row[
+                                          "iaruLocator"] != "-" else None,
+                                      latitude=float(row["latitude"]) if "latitude" in row and row[
+                                          "latitude"] != "" and row["latitude"] != "-" else None,
+                                      longitude=float(row["longitude"]) if "longitude" in row and row[
+                                          "longitude"] != "" and row["longitude"] != "-" else None))
+
+        return new_data

sigrefdataproviders/zlota.py

@@ -0,0 +1,34 @@
+from pyhamtools.locator import latlong_to_locator
+
+from data.sig_ref import SIGRef
+from sigrefdataproviders.file_download_sig_ref_data_provider import FileDownloadSIGRefDataProvider
+
+
+class ZLOTA(FileDownloadSIGRefDataProvider):
+    """SIG ref data provider for New Zealand on the Air"""
+
+    POLL_INTERVAL_DAYS = 30
+    SIG = "ZLOTA"
+    DATA_URL = "https://ontheair.nz/assets/assets.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["code"]
+                latitude = ref["y"]
+                longitude = ref["x"]
+
+                ref = SIGRef(sig=self.SIG, id=ref_id, name=ref["name"],
+                                          url="https://ontheair.nz/assets/" + ref_id.replace("/", "_"),
+                                          latitude=latitude,
+                                          longitude=longitude)
+                if latitude and longitude:
+                    ref.grid = latlong_to_locator(latitude, longitude, 6)
+                new_data.append(ref)
+
+        return new_data

solarconditionsproviders/giroionosonde.py

@@ -5,6 +5,7 @@ from threading import Thread, Event
 
 import pytz
 import requests
+from requests.exceptions import ConnectionError, ReadTimeout, ConnectTimeout
 
 from core.constants import HTTP_HEADERS
 from solarconditionsproviders.ionosonde_utils import compute_band_states
@@ -29,11 +30,23 @@ class GIROIonosonde(SolarConditionsProvider):
     data, but is less reliable and often offline."""
 
     def __init__(self, provider_config):
-        super().__init__(provider_config)
+        super().__init__("GIRO Ionosonde Data", provider_config)
         self._stations = self._load_stations()
         self._thread = None
         self._stop_event = Event()
 
+        # Pre-populate ionosonde_data with known station names for stations not already present,
+        # so the station dropdown is available before the first poll. Does not overwrite existing
+        # entries so KC2G cache data is preserved.
+        existing = self._solar_conditions.ionosonde_data or {}
+        new_entries = {
+            s["ursi"]: {"ursi": s["ursi"], "name": s["name"], "fof2": None, "muf": None,
+                        "luf": None, "band_states": None}
+            for s in self._stations if s["ursi"] not in existing
+        }
+        if new_entries:
+            self.update_data({"ionosonde_data": {**existing, **new_entries}})
+
     @staticmethod
     def _load_stations():
         stations = []
@@ -43,21 +56,6 @@ class GIROIonosonde(SolarConditionsProvider):
                     stations.append({"ursi": row[0].strip(), "name": row[1].strip()})
         return stations
 
-    def setup(self, solar_conditions, solar_conditions_cache):
-        """Pre-populate ionosonde_data with known station names for stations not already present,
-        so the station dropdown is available before the first poll. Does not overwrite existing
-        entries so KC2G cache data is preserved."""
-
-        super().setup(solar_conditions, solar_conditions_cache)
-        existing = solar_conditions.ionosonde_data or {}
-        new_entries = {
-            s["ursi"]: {"ursi": s["ursi"], "name": s["name"], "fof2": None, "muf": None,
-                        "luf": None, "band_states": None}
-            for s in self._stations if s["ursi"] not in existing
-        }
-        if new_entries:
-            self.update_data({"ionosonde_data": {**existing, **new_entries}})
-
     def start(self):
         logging.info(f"Set up query of GIRO ionosonde data API every {POLL_INTERVAL} seconds.")
         self._thread = Thread(target=self._run, daemon=True)
@@ -127,10 +125,18 @@ class GIROIonosonde(SolarConditionsProvider):
         from_str = from_time.strftime("%Y.%m.%d+%H:%M:%S")
         to_str = to_time.strftime("%Y.%m.%d+%H:%M:%S")
         url = f"{LGDC_URL}?ursiCode={ursi}&charName=foF2,MUFD,fmin&DMUF=3000&fromDate={from_str}&toDate={to_str}"
-        response = requests.get(url, headers=HTTP_HEADERS, timeout=(5, 15))
+        try:
-        if response.status_code != 200:
+            http_response = requests.get(url, headers=HTTP_HEADERS, timeout=(5, 15))
+            if not http_response.ok:
+                logging.warning(f"HTTP {http_response.status_code} when calling Giro ionosonde API.")
+                return None, None, None
+            return self._parse_all(http_response.text)
+        except (ConnectTimeout, ReadTimeout):
+            logging.warning(f"Timeout when accessing Giro ionosonde API.")
+            return None, None, None
+        except ConnectionError:
+            logging.warning("Connection error when accessing Giro ionosonde API.")
             return None, None, None
-        return self._parse_all(response.text)
 
     @staticmethod
     def _parse_all(text):

solarconditionsproviders/hamqsl.py

@@ -15,13 +15,9 @@ class HamQSL(HTTPSolarConditionsProvider):
     Provides solar flux index, geomagnetic indices, and HF/VHF propagation condition summaries."""
 
     def __init__(self, provider_config):
-        super().__init__(provider_config, URL, POLL_INTERVAL)
+        super().__init__("HamQSL", provider_config, URL, POLL_INTERVAL)
 
     def _http_response_to_solar_conditions(self, http_response):
-        if http_response.status_code != 200:
-            logging.warning("HamQSL solar conditions API returned HTTP " + str(http_response.status_code))
-            return None
-
         root = ElementTree.fromstring(http_response.text)
         sd = root.find("solardata")
         if sd is None:

solarconditionsproviders/http_solar_conditions_provider.py

@@ -4,6 +4,7 @@ from threading import Thread, Event
 
 import pytz
 import requests
+from requests.exceptions import ConnectionError, ReadTimeout, ConnectTimeout
 
 from core.constants import HTTP_HEADERS
 from solarconditionsproviders.solar_conditions_provider import SolarConditionsProvider
@@ -13,8 +14,8 @@ class HTTPSolarConditionsProvider(SolarConditionsProvider):
     """Generic solar conditions provider for providers that request data via HTTP(S). Subclasses implement
     _http_response_to_solar_conditions() to parse the specific API response format."""
 
-    def __init__(self, provider_config, url, poll_interval):
+    def __init__(self, name, provider_config, url, poll_interval):
-        super().__init__(provider_config)
+        super().__init__(name, provider_config)
         self._url = url
         self._poll_interval = poll_interval
         self._thread = None
@@ -39,13 +40,22 @@ class HTTPSolarConditionsProvider(SolarConditionsProvider):
         try:
             logging.debug("Polling " + self.name + " solar conditions API...")
             http_response = requests.get(self._url, headers=HTTP_HEADERS, timeout=(5, 30))
+            # Check response code was good
+            if http_response.ok:
                 new_data = self._http_response_to_solar_conditions(http_response)
                 self.update_data(new_data)
 
                 self.status = "OK"
                 self.last_update_time = datetime.now(pytz.UTC)
                 logging.debug("Received data from " + self.name + " solar conditions API.")
+            else:
+                self.status = "Error"
+                logging.warning(f"HTTP {http_response.status_code} when calling {self.name} solar conditions API.")
 
+        except ConnectionError:
+            logging.warning(f"Connection error when accessing {self.name} solar conditions API.")
+        except (ConnectTimeout, ReadTimeout):
+            logging.warning(f"Timeout when accessing {self.name} solar conditions API.")
         except Exception:
             self.status = "Error"
             logging.exception("Exception in HTTP Solar Conditions Provider (" + self.name + ")")

solarconditionsproviders/kc2gprop.py

@@ -4,6 +4,7 @@ from threading import Thread, Event
 
 import pytz
 import requests
+from requests.exceptions import ConnectionError, ReadTimeout, ConnectTimeout
 
 from core.constants import HTTP_HEADERS
 from solarconditionsproviders.ionosonde_utils import compute_band_states
@@ -23,7 +24,7 @@ class KC2GProp(SolarConditionsProvider):
     online, but has fewer stations and does not provide LUF data."""
 
     def __init__(self, provider_config):
-        super().__init__(provider_config)
+        super().__init__("KC2G Propagation Data", provider_config)
         self._thread = None
         self._stop_event = Event()
 
@@ -44,9 +45,9 @@ class KC2GProp(SolarConditionsProvider):
     def _poll(self):
         try:
             logging.debug("Polling KC2G ionosonde data...")
-            response = requests.get(KC2G_URL, headers=HTTP_HEADERS, timeout=(5, 30))
+            http_response = requests.get(KC2G_URL, headers=HTTP_HEADERS, timeout=(5, 30))
-            if response.status_code != 200:
+            if not http_response.ok:
-                logging.warning(f"KC2G ionosonde API returned HTTP {response.status_code}")
+                logging.warning(f"HTTP {http_response.status_code} when calling KG2G ionosonde API.")
                 return
 
             now = datetime.now(timezone.utc)
@@ -57,7 +58,7 @@ class KC2GProp(SolarConditionsProvider):
             ionosonde_data = dict(self._solar_conditions.ionosonde_data or {})
             updated_count = 0
 
-            for reading in response.json():
+            for reading in http_response.json():
                 station = reading.get("station", {})
                 ursi = station.get("code")
                 name = station.get("name")
@@ -115,6 +116,10 @@ class KC2GProp(SolarConditionsProvider):
             self.last_update_time = datetime.now(pytz.UTC)
             logging.debug(f"Updated KC2G ionosonde data for {updated_count} stations.")
 
+        except ConnectionError:
+            logging.warning("Connection error when accessing KC2G ionosonde API.")
+        except (ConnectTimeout, ReadTimeout):
+            logging.warning(f"Timeout when accessing KC2G ionosonde API.")
         except Exception:
             self.status = "Error"
             logging.exception("Exception in KC2G ionosonde data provider")

solarconditionsproviders/noaa3dayforecast.py

@@ -13,7 +13,7 @@ class NOAA3dayForecast(HTTPSolarConditionsProvider):
     corresponding fields in the solar conditions object.."""
 
     def __init__(self, provider_config):
-        super().__init__(provider_config, URL, POLL_INTERVAL)
+        super().__init__("NOAA 3-day Forecast", provider_config, URL, POLL_INTERVAL)
 
     @staticmethod
     def _parse_percentage_table(lines, section_header, year):
@@ -80,10 +80,6 @@ class NOAA3dayForecast(HTTPSolarConditionsProvider):
         return result if result else None
 
     def _http_response_to_solar_conditions(self, http_response):
-        if http_response.status_code != 200:
-            logging.warning("NOAA K-index forecast API returned HTTP " + str(http_response.status_code))
-            return None
-
         lines = http_response.text.splitlines()
 
         # Find the "NOAA Kp index breakdown" section header

solarconditionsproviders/solar_conditions_provider.py

@@ -2,26 +2,21 @@ from datetime import datetime
 
 import pytz
 
+from core.data_store import DATA_STORE
+
 
 class SolarConditionsProvider:
     """Generic solar conditions provider class. Subclasses of this query individual APIs for space weather and
      propagation data."""
 
-    def __init__(self, provider_config):
+    def __init__(self, name, provider_config):
         """Constructor"""
 
-        self._solar_conditions_cache = None
+        self.name = name
-        self.name = provider_config["name"]
         self.enabled = provider_config["enabled"]
         self.last_update_time = datetime.min.replace(tzinfo=pytz.UTC)
         self.status = "Not Started" if self.enabled else "Disabled"
-        self._solar_conditions = None
+        self._solar_conditions = DATA_STORE.solar_conditions
-
-    def setup(self, solar_conditions, solar_conditions_cache):
-        """Set up the provider, giving it the solar conditions object and its backing cache"""
-
-        self._solar_conditions = solar_conditions
-        self._solar_conditions_cache = solar_conditions_cache
 
     def start(self):
         """Start the provider. This should return immediately after spawning threads to access the remote resources"""
@@ -41,4 +36,3 @@ class SolarConditionsProvider:
                 if hasattr(self._solar_conditions, key):
                     setattr(self._solar_conditions, key, value)
             self._solar_conditions.infer_descriptions()
-            self._solar_conditions_cache['solar_conditions'] = self._solar_conditions

spothole.py

@@ -1,30 +1,23 @@
 # Main script
-import importlib
 import logging
 import os
 import signal
 import sys
 
-from diskcache import Cache
+from core.config import config, SERVER_OWNER_CALLSIGN, LOG_LEVEL, get_sig_ref_data_provider_from_config, \
-
+    get_spot_provider_from_config, get_alert_provider_from_config, get_solar_conditions_provider_from_config
-from core.cleanup import CleanupTimer
-from core.config import config, SERVER_OWNER_CALLSIGN
 from core.constants import SOFTWARE_VERSION
+from core.data_store import DATA_STORE
 from core.lookup_helper import lookup_helper
 from core.status_reporter import StatusReporter
-from data.solar_conditions import SolarConditions
 from server.webserver import WebServer
 
 # Globals
-spots = Cache('cache/spots_cache')
-alerts = Cache('cache/alerts_cache')
-solar_conditions_cache = Cache('cache/solar_conditions_cache')
-solar_conditions = solar_conditions_cache.get('solar_conditions', SolarConditions())
 web_server = None
-status_data = {}
 spot_providers = []
 alert_providers = []
 solar_condition_providers = []
+sig_ref_data_providers = []
 cleanup_timer = None
 run = True
 
@@ -46,47 +39,20 @@ def shutdown(_signum=None, _frame=None):
     for scp in solar_condition_providers:
         if scp.enabled:
             scp.stop()
-    if cleanup_timer:
+    for srdp in sig_ref_data_providers:
-        cleanup_timer.stop()
+        if srdp.enabled:
-    if lookup_helper:
+            srdp.stop()
-        lookup_helper.stop()
+    DATA_STORE.close()
-    spots.close()
-    alerts.close()
-    solar_conditions_cache.close()
     os._exit(0)
 
 
-def get_spot_provider_from_config(config_providers_entry):
-    """Utility method to get a spot provider based on the class specified in its config entry."""
-
-    module = importlib.import_module('spotproviders.' + config_providers_entry["class"].lower())
-    provider_class = getattr(module, config_providers_entry["class"])
-    return provider_class(config_providers_entry)
-
-
-def get_alert_provider_from_config(config_providers_entry):
-    """Utility method to get an alert provider based on the class specified in its config entry."""
-
-    module = importlib.import_module('alertproviders.' + config_providers_entry["class"].lower())
-    provider_class = getattr(module, config_providers_entry["class"])
-    return provider_class(config_providers_entry)
-
-
-def get_solar_conditions_provider_from_config(config_providers_entry):
-    """Utility method to get a solar conditions provider based on the class specified in its config entry."""
-
-    module = importlib.import_module('solarconditionsproviders.' + config_providers_entry["class"].lower())
-    provider_class = getattr(module, config_providers_entry["class"])
-    return provider_class(config_providers_entry)
-
-
 # Main function
 if __name__ == '__main__':
     # Set up logging
     root = logging.getLogger()
-    root.setLevel(logging.INFO)
+    root.setLevel(LOG_LEVEL)
     handler = logging.StreamHandler(sys.stdout)
-    handler.setLevel(logging.INFO)
+    handler.setLevel(LOG_LEVEL)
     formatter = logging.Formatter("%(levelname)s : %(message)s")
     handler.setFormatter(formatter)
     root.handlers.clear()
@@ -99,17 +65,19 @@ if __name__ == '__main__':
     # Shut down gracefully on SIGINT
     signal.signal(signal.SIGINT, shutdown)
 
+    # Set up data store
+    DATA_STORE.setup()
+
     # Set up lookup helper
     lookup_helper.start()
 
     # Set up web server
-    web_server = WebServer(spots=spots, alerts=alerts, solar_conditions=solar_conditions, status_data=status_data)
+    web_server = WebServer()
 
     # Fetch, set up and start spot providers
     for entry in config["spot-providers"]:
         spot_providers.append(get_spot_provider_from_config(entry))
     for p in spot_providers:
-        p.setup(spots=spots, web_server=web_server)
         if p.enabled:
             p.start()
 
@@ -117,7 +85,6 @@ if __name__ == '__main__':
     for entry in config["alert-providers"]:
         alert_providers.append(get_alert_provider_from_config(entry))
     for p in alert_providers:
-        p.setup(alerts=alerts, web_server=web_server)
         if p.enabled:
             p.start()
 
@@ -125,18 +92,20 @@ if __name__ == '__main__':
     for entry in config.get("solar-condition-providers", []):
         solar_condition_providers.append(get_solar_conditions_provider_from_config(entry))
     for p in solar_condition_providers:
-        p.setup(solar_conditions=solar_conditions, solar_conditions_cache=solar_conditions_cache)
         if p.enabled:
             p.start()
 
-    # Set up timer to clear spot list of old data
+    # Fetch, set up and start SIG reference data providers
-    cleanup_timer = CleanupTimer(spots=spots, alerts=alerts, web_server=web_server, cleanup_interval=60)
+    for entry in config.get("sig-ref-data-providers", []):
-    cleanup_timer.start()
+        sig_ref_data_providers.append(get_sig_ref_data_provider_from_config(entry))
+    for p in sig_ref_data_providers:
+        if p.enabled:
+            p.start()
 
     # Set up status reporter
-    status_reporter = StatusReporter(status_data=status_data, spots=spots, alerts=alerts, web_server=web_server,
+    status_reporter = StatusReporter(web_server=web_server, spot_providers=spot_providers,
-                                     cleanup_timer=cleanup_timer, spot_providers=spot_providers,
                                      alert_providers=alert_providers,
+                                     sig_ref_data_providers=sig_ref_data_providers,
                                      solar_condition_providers=solar_condition_providers, run_interval=5)
     status_reporter.start()
 

spotproviders/aprsis.py

@@ -14,7 +14,7 @@ class APRSIS(SpotProvider):
     """Spot provider for the APRS-IS."""
 
     def __init__(self, provider_config):
-        super().__init__(provider_config)
+        super().__init__("APRS-IS", provider_config)
         self._thread = Thread(target=self._connect)
         self._thread.daemon = True
         self._aprsis = None

spotproviders/dxcluster.py

@@ -26,7 +26,8 @@ class DXCluster(SpotProvider):
     def __init__(self, provider_config):
         """Constructor requires hostname and port"""
 
-        super().__init__(provider_config)
+        name = provider_config["name"] if "name" in provider_config else "Cluster"
+        super().__init__(name, provider_config)
         self._hostname = provider_config["host"]
         self._port = provider_config["port"]
         self._login_prompt = provider_config["login_prompt"] if "login_prompt" in provider_config else "login:"
@@ -59,6 +60,10 @@ class DXCluster(SpotProvider):
                     self._telnet.write((self._login_callsign + "\n").encode("latin-1"))
                     connected = True
                     logging.info("DX Cluster " + self._hostname + " connected.")
+                except ConnectionRefusedError:
+                    self.status = "Error"
+                    logging.warning("Connection refused to DX cluster " + self._hostname)
+                    sleep(300)
                 except Exception:
                     self.status = "Error"
                     logging.exception("Exception while connecting to DX Cluster Provider (" + self._hostname + ").")

spotproviders/gma.py

@@ -3,8 +3,8 @@ from datetime import datetime
 
 import pytz
 
-from core.cache_utils import SEMI_STATIC_URL_DATA_CACHE
 from core.constants import HTTP_HEADERS
+from core.url_data_cache import URL_DATA_CACHE
 from data.sig_ref import SIGRef
 from data.spot import Spot
 from spotproviders.http_spot_provider import HTTPSpotProvider
@@ -14,9 +14,9 @@ class GMA(HTTPSpotProvider):
     """Spot provider for General Mountain Activity"""
 
     POLL_INTERVAL_SEC = 120
-    SPOTS_URL = "https://www.cqgma.org/api/spots/25/"
+    SPOTS_URL = "https://www.gma.rocks/api/spots/25/"
     # GMA spots don't contain the details of the programme they are for, we need a separate lookup for that
-    REF_INFO_URL_ROOT = "https://www.cqgma.org/api/ref/?"
+    REF_INFO_URL_ROOT = "https://www.gma.rocks/api/ref/?"
 
     def __init__(self, provider_config):
         # Ensure there is an API key in our config, and set up the query URL using it. If no key is provided,
@@ -26,7 +26,7 @@ class GMA(HTTPSpotProvider):
             provider_config["enabled"] = False
             logging.warning("GMA spot provider configured but no api key was provided, this API will not be queried.")
 
-        super().__init__(provider_config, self.SPOTS_URL + "?key=" + self.api_key, self.POLL_INTERVAL_SEC)
+        super().__init__("GMA", provider_config, self.SPOTS_URL + "?key=" + self.api_key, self.POLL_INTERVAL_SEC)
 
     def _http_response_to_spots(self, http_response):
         new_spots = []
@@ -37,34 +37,38 @@ class GMA(HTTPSpotProvider):
                 spot = Spot(source=self.name,
                             dx_call=source_spot["ACTIVATOR"].upper(),
                             de_call=source_spot["SPOTTER"].upper(),
-                            freq=float(source_spot["QRG"]) * 1000 if (source_spot["QRG"] != "") else None,
+                            # Seen GMA spots with no frequency or with "QRT" in this field
-                            # Seen GMA spots with no frequency
+                            freq=float(source_spot["QRG"]) * 1000 if (
-                            mode=source_spot["MODE"].upper() if "<>" not in source_spot["MODE"] else None,
+                                    source_spot["QRG"] != "" and source_spot["QRG"] != "QRT") else None,
                             # Filter out some weird mode strings
+                            mode=source_spot["MODE"].upper() if "<>" not in source_spot["MODE"] else None,
                             comment=source_spot["TEXT"],
                             sig_refs=[SIGRef(id=source_spot["REF"], sig="", name=source_spot["NAME"])],
                             time=datetime.strptime(source_spot["DATE"] + source_spot["TIME"], "%Y%m%d%H%M").replace(
                                 tzinfo=pytz.UTC).timestamp(),
+                            # Seen GMA spots with no (or empty) lat/lon
                             dx_latitude=float(source_spot["LAT"]) if (
                                     source_spot["LAT"] and source_spot["LAT"] != "") else None,
-                            # Seen GMA spots with no (or empty) lat/lon
                             dx_longitude=float(source_spot["LON"]) if (
-                                    source_spot["LON"] and source_spot["LON"] != "") else None)
+                                    source_spot["LON"] and source_spot["LON"] != "") else None,
+                            qrt=source_spot["QRG"] == "QRT")
 
                 # GMA doesn't give what programme (SIG) the reference is for until we separately look it up.
                 if "REF" in source_spot:
                     try:
-                        ref_response = SEMI_STATIC_URL_DATA_CACHE.get(self.REF_INFO_URL_ROOT + source_spot["REF"],
+                        ref_response = URL_DATA_CACHE.get(self.REF_INFO_URL_ROOT + source_spot["REF"],
                                                           headers=HTTP_HEADERS)
-                        # Sometimes this is blank, so handle that
+                        # Sometimes this is blank even if it's a 200 response, so handle that
-                        if ref_response.text is not None and ref_response.text != "":
+                        if ref_response.ok and ref_response.text is not None and ref_response.text != "":
                             ref_info = ref_response.json()
                             # If this is POTA, SOTA or WWFF data we already have it through other means, so ignore. POTA and WWFF
                             # spots come through with reftype=POTA or reftype=WWFF. SOTA is harder to figure out because both SOTA
                             # and GMA summits come through with reftype=Summit, so we must check for the presence of a "sota" entry
                             # to determine if it's a SOTA summit.
-                            if spot.sig_refs and "reftype" in ref_info and ref_info["reftype"] not in ["POTA", "WWFF"] and (
+                            if spot.sig_refs and "reftype" in ref_info and ref_info["reftype"] not in ["POTA",
-                                    ref_info["reftype"] != "Summit" or "sota" not in ref_info or ref_info["sota"] == ""):
+                                                                                                       "WWFF"] and (
+                                    ref_info["reftype"] != "Summit" or "sota" not in ref_info or ref_info[
+                                "sota"] == ""):
                                 match ref_info["reftype"]:
                                     case "Summit":
                                         spot.sig_refs[0].sig = "GMA"
@@ -90,9 +94,17 @@ class GMA(HTTPSpotProvider):
                                         spot.sig_refs[0].sig = ref_info["reftype"]
                                         spot.sig = ref_info["reftype"]
 
-                                # Add to our list. Don't worry about de-duping, removing old spots etc. at this point; other code will do
+                                # Add to our list. Don't worry about de-duping, removing old spots etc. at this point;
-                                # that for us.
+                                # other code will do that for us.
                                 new_spots.append(spot)
+
+                        elif not ref_response.from_cache:
+                            if not ref_response.ok:
+                                logging.warning(
+                                    f"HTTP {ref_response.status_code} when looking up GMA ref {source_spot["REF"]}")
+                            else:
+                                logging.warning(
+                                    f"GMA API returned a malformed response when looking up ref {source_spot["REF"]}")
                     except:
                         logging.warning("Exception when looking up " + self.REF_INFO_URL_ROOT + source_spot[
                             "REF"] + ", ignoring this spot for now")

spotproviders/hema.py

@@ -1,8 +1,10 @@
+import logging
 import re
 from datetime import datetime
 
 import pytz
 import requests
+from requests.exceptions import ConnectionError, ReadTimeout, ConnectTimeout
 
 from core.constants import HTTP_HEADERS
 from data.sig_ref import SIGRef
@@ -23,7 +25,7 @@ class HEMA(HTTPSpotProvider):
     SPOTTER_COMMENT_PATTERN = re.compile("^\\((.*)\\) (.*)$")
 
     def __init__(self, provider_config):
-        super().__init__(provider_config, self.SPOT_SEED_URL, self.POLL_INTERVAL_SEC)
+        super().__init__("HEMA", provider_config, self.SPOT_SEED_URL, self.POLL_INTERVAL_SEC)
         self._spot_seed = ""
 
     def _http_response_to_spots(self, http_response):
@@ -35,6 +37,7 @@ class HEMA(HTTPSpotProvider):
         new_spots = []
         # OK, if the spot seed actually changed, now we make the real request for data.
         if spot_seed_changed:
+            try:
                 source_data = requests.get(self.SPOTS_URL, headers=HTTP_HEADERS, timeout=(5, 30))
                 source_data_items = source_data.text.split("=")
                 # Iterate through source data items.
@@ -62,7 +65,11 @@ class HEMA(HTTPSpotProvider):
                                     dx_latitude=float(spot_items[7]),
                                     dx_longitude=float(spot_items[8]))
 
-                    # Add to our list. Don't worry about de-duping, removing old spots etc. at this point; other code will do
+                        # Add to our list. Don't worry about de-duping, removing old spots etc. at this point; other
-                    # that for us.
+                        # code will do that for us.
                         new_spots.append(spot)
+            except (ConnectTimeout, ReadTimeout):
+                logging.warning(f"Timeout when accessing HEMA spots API.")
+            except ConnectionError:
+                logging.warning("Connection error when accessing HEMA spots API.")
         return new_spots

spotproviders/http_spot_provider.py

@@ -4,6 +4,8 @@ from threading import Thread, Event
 
 import pytz
 import requests
+from requests import ReadTimeout
+from requests.exceptions import ConnectionError, ConnectTimeout
 
 from core.constants import HTTP_HEADERS
 from spotproviders.spot_provider import SpotProvider
@@ -13,8 +15,8 @@ class HTTPSpotProvider(SpotProvider):
     """Generic spot provider class for providers that request data via HTTP(S). Just for convenience to avoid code
     duplication. Subclasses of this query the individual APIs for data."""
 
-    def __init__(self, provider_config, url, poll_interval):
+    def __init__(self, name, provider_config, url, poll_interval):
-        super().__init__(provider_config)
+        super().__init__(name, provider_config)
         self._url = url
         self._poll_interval = poll_interval
         self._thread = None
@@ -41,6 +43,8 @@ class HTTPSpotProvider(SpotProvider):
             # Request data from API
             logging.debug("Polling " + self.name + " spot API...")
             http_response = requests.get(self._url, headers=HTTP_HEADERS, timeout=(5, 30))
+            # Check response code was good
+            if http_response.ok:
                 # Pass off to the subclass for processing
                 new_spots = self._http_response_to_spots(http_response)
                 # Submit the new spots for processing. There might not be any spots for the less popular programs.
@@ -50,10 +54,17 @@ class HTTPSpotProvider(SpotProvider):
                 self.status = "OK"
                 self.last_update_time = datetime.now(pytz.UTC)
                 logging.debug("Received data from " + self.name + " spot API.")
+            else:
+                self.status = "Error"
+                logging.warning(f"HTTP {http_response.status_code} when calling {self.name} spot API.")
 
+        except ConnectionError:
+            logging.warning(f"Connection error when accessing {self.name} spots API.")
+        except (ConnectTimeout, ReadTimeout):
+            logging.warning(f"Timeout when accessing {self.name} spots API.")
         except Exception:
             self.status = "Error"
-            logging.exception("Exception in HTTP JSON Spot Provider (" + self.name + ")")
+            logging.exception("Exception in HTTP Spot Provider (" + self.name + ")")
             self._stop_event.wait(timeout=1)
 
     def _http_response_to_spots(self, http_response):

spotproviders/llota.py

@@ -12,7 +12,7 @@ class LLOTA(HTTPSpotProvider):
     SPOTS_URL = "https://llota.app/api/public/spots"
 
     def __init__(self, provider_config):
-        super().__init__(provider_config, self.SPOTS_URL, self.POLL_INTERVAL_SEC)
+        super().__init__("LLOTA", provider_config, self.SPOTS_URL, self.POLL_INTERVAL_SEC)
 
     def _http_response_to_spots(self, http_response):
         new_spots = []

spotproviders/parksnpeaks.py

@@ -17,7 +17,7 @@ class ParksNPeaks(HTTPSpotProvider):
     SIOTA_LIST_URL = "https://www.silosontheair.com/data/silos.csv"
 
     def __init__(self, provider_config):
-        super().__init__(provider_config, self.SPOTS_URL, self.POLL_INTERVAL_SEC)
+        super().__init__("ParksNPeaks", provider_config, self.SPOTS_URL, self.POLL_INTERVAL_SEC)
 
     def _http_response_to_spots(self, http_response):
         new_spots = []
@@ -30,8 +30,8 @@ class ParksNPeaks(HTTPSpotProvider):
                             dx_call=source_spot["actCallsign"].upper(),
                             de_call=source_spot["actSpoter"].upper() if source_spot["actSpoter"] != "" else None,
                             # typo exists in API
-                            freq=float(source_spot["actFreq"].replace(",", "")) * 1000000 if (
+                            freq=float(source_spot["actFreq"].replace(",", "").replace("+-", "")
-                                    source_spot["actFreq"] != "") else None,
+                                       .replace("+/-", "").strip()) * 1000000 if (source_spot["actFreq"] != "") else None,
                             # Seen PNP spots with empty frequency, and with comma-separated thousands digits
                             mode=source_spot["actMode"].upper(),
                             comment=source_spot["actComments"],

spotproviders/pota.py

@@ -14,7 +14,7 @@ class POTA(HTTPSpotProvider):
     SPOTS_URL = "https://api.pota.app/spot/activator"
 
     def __init__(self, provider_config):
-        super().__init__(provider_config, self.SPOTS_URL, self.POLL_INTERVAL_SEC)
+        super().__init__("POTA", provider_config, self.SPOTS_URL, self.POLL_INTERVAL_SEC)
 
     def _http_response_to_spots(self, http_response):
         new_spots = []

spotproviders/rbn.py

@@ -23,7 +23,8 @@ class RBN(SpotProvider):
     def __init__(self, provider_config):
         """Constructor requires port number."""
 
-        super().__init__(provider_config)
+        name = provider_config["name"] if "name" in provider_config else "RBN"
+        super().__init__(name, provider_config)
         self._port = provider_config["port"]
         self._telnet = None
         self._thread = Thread(target=self._handle)

spotproviders/sota.py

@@ -1,6 +1,8 @@
+import logging
 from datetime import datetime
 
 import requests
+from requests.exceptions import ConnectionError, ReadTimeout, ConnectTimeout
 
 from core.constants import HTTP_HEADERS
 from data.sig_ref import SIGRef
@@ -17,11 +19,9 @@ class SOTA(HTTPSpotProvider):
     # The actual data lookup all happens after parsing and checking the epoch.
     EPOCH_URL = "https://api-db2.sota.org.uk/api/spots/epoch"
     SPOTS_URL = "https://api-db2.sota.org.uk/api/spots/60/all/all"
-    # SOTA spots don't contain lat/lon, we need a separate lookup for that
-    SUMMIT_URL_ROOT = "https://api-db2.sota.org.uk/api/summits/"
 
     def __init__(self, provider_config):
-        super().__init__(provider_config, self.EPOCH_URL, self.POLL_INTERVAL_SEC)
+        super().__init__("SOTA", provider_config, self.EPOCH_URL, self.POLL_INTERVAL_SEC)
         self._api_epoch = ""
 
     def _http_response_to_spots(self, http_response):
@@ -33,6 +33,7 @@ class SOTA(HTTPSpotProvider):
         new_spots = []
         # OK, if the epoch actually changed, now we make the real request for data.
         if epoch_changed:
+            try:
                 source_data = requests.get(self.SPOTS_URL, headers=HTTP_HEADERS, timeout=(5, 30)).json()
                 # Iterate through source data
                 for source_spot in source_data:
@@ -55,4 +56,8 @@ class SOTA(HTTPSpotProvider):
                     # Add to our list. Don't worry about de-duping, removing old spots etc. at this point; other code will do
                     # that for us.
                     new_spots.append(spot)
+            except ConnectionError:
+                logging.warning("Connection error when accessing SOTA spots API")
+            except (ConnectTimeout, ReadTimeout):
+                logging.warning(f"Timeout when accessing SOTA spots API.")
         return new_spots

spotproviders/spot_provider.py

@@ -2,28 +2,21 @@ from datetime import datetime
 
 import pytz
 
-from core.config import MAX_SPOT_AGE
+from core.data_store import DATA_STORE
 
 
 class SpotProvider:
     """Generic spot provider class. Subclasses of this query the individual APIs for data."""
 
-    def __init__(self, provider_config):
+    def __init__(self, name, provider_config):
         """Constructor"""
 
-        self.name = provider_config["name"]
+        self.name = name
         self.enabled = provider_config["enabled"]
         self.last_update_time = datetime.min.replace(tzinfo=pytz.UTC)
         self.last_spot_time = datetime.min.replace(tzinfo=pytz.UTC)
         self.status = "Not Started" if self.enabled else "Disabled"
-        self._spots = None
+        self._spots = DATA_STORE.spots
-        self._web_server = None
-
-    def setup(self, spots, web_server):
-        """Set up the provider, e.g. giving it the spot list to work from"""
-
-        self._spots = spots
-        self._web_server = web_server
 
     def start(self):
         """Start the provider. This should return immediately after spawning threads to access the remote resources"""
@@ -59,10 +52,7 @@ class SpotProvider:
 
     def _add_spot(self, spot):
         if not spot.expired():
-            self._spots.add(spot.id, spot, expire=MAX_SPOT_AGE)
+            self._spots.set(spot.id, spot)
-            # Ping the web server in case we have any SSE connections that need to see this immediately
-            if self._web_server:
-                self._web_server.notify_new_spot(spot)
 
     def stop(self):
         """Stop any threads and prepare for application shutdown"""

spotproviders/sse_spot_provider.py

@@ -13,8 +13,8 @@ from spotproviders.spot_provider import SpotProvider
 class SSESpotProvider(SpotProvider):
     """Spot provider using Server-Sent Events."""
 
-    def __init__(self, provider_config, url):
+    def __init__(self, name, provider_config, url):
-        super().__init__(provider_config)
+        super().__init__(name, provider_config)
         self._url = url
         self._event_source = None
         self._thread = None

spotproviders/tiles.py

@@ -12,7 +12,7 @@ class Tiles(HTTPSpotProvider):
     SPOTS_URL = "https://icneuzxitdqtofutxbla.supabase.co/functions/v1/spots?active_hours=24"
 
     def __init__(self, provider_config):
-        super().__init__(provider_config, self.SPOTS_URL, self.POLL_INTERVAL_SEC)
+        super().__init__("Tiles", provider_config, self.SPOTS_URL, self.POLL_INTERVAL_SEC)
 
     def _http_response_to_spots(self, http_response):
         new_spots = []

spotproviders/towers.py

@@ -6,14 +6,14 @@ from data.spot import Spot
 from spotproviders.http_spot_provider import HTTPSpotProvider
 
 
-class WWTOTA(HTTPSpotProvider):
+class Towers(HTTPSpotProvider):
     """Spot provider for Towers on the Air"""
 
     POLL_INTERVAL_SEC = 120
     SPOTS_URL = "https://wwtota.com/api/cluster_live.php"
 
     def __init__(self, provider_config):
-        super().__init__(provider_config, self.SPOTS_URL, self.POLL_INTERVAL_SEC)
+        super().__init__("Towers", provider_config, self.SPOTS_URL, self.POLL_INTERVAL_SEC)
 
     def _http_response_to_spots(self, http_response):
         new_spots = []
@@ -30,8 +30,8 @@ class WWTOTA(HTTPSpotProvider):
                         dx_call=source_spot["call"].upper(),
                         freq=likely_freq,
                         comment=source_spot["comment"],
-                        sig="WWTOTA",
+                        sig="Towers",
-                        sig_refs=[SIGRef(id=source_spot["ref"], sig="WWTOTA")],
+                        sig_refs=[SIGRef(id=source_spot["ref"], sig="Towers")],
                         time=datetime.strptime(response_json["updated"][:10] + source_spot["time"],
                                                "%Y-%m-%d%H:%M").timestamp())
 

spotproviders/ukpacketnet.py

@@ -14,7 +14,7 @@ class UKPacketNet(HTTPSpotProvider):
     SPOTS_URL = "https://nodes.ukpacketradio.network/api/nodedata"
 
     def __init__(self, provider_config):
-        super().__init__(provider_config, self.SPOTS_URL, self.POLL_INTERVAL_SEC)
+        super().__init__("UK Packet Net", provider_config, self.SPOTS_URL, self.POLL_INTERVAL_SEC)
 
     def _http_response_to_spots(self, http_response):
         new_spots = []

spotproviders/websocket_spot_provider.py

@@ -13,8 +13,8 @@ from spotproviders.spot_provider import SpotProvider
 class WebsocketSpotProvider(SpotProvider):
     """Spot provider using websockets."""
 
-    def __init__(self, provider_config, url):
+    def __init__(self, name, provider_config, url):
-        super().__init__(provider_config)
+        super().__init__(name, provider_config)
         self._url = url
         self._ws = None
         self._thread = None

spotproviders/wota.py

@@ -21,11 +21,11 @@ class WOTA(HTTPSpotProvider):
     RSS_DATE_TIME_FORMAT = "%a, %d %b %Y %H:%M:%S %z"
 
     def __init__(self, provider_config):
-        super().__init__(provider_config, self.SPOTS_URL, self.POLL_INTERVAL_SEC)
+        super().__init__("WOTA", provider_config, self.SPOTS_URL, self.POLL_INTERVAL_SEC)
 
     def _http_response_to_spots(self, http_response):
         new_spots = []
-        rss = cast(RSS, Parser.parse(http_response.content.decode()))
+        rss = cast(RSS, Parser.parse(http_response.content.decode("utf-8-sig")))
         # Iterate through source data
         for source_spot in rss.channel.items:
 

spotproviders/wwbota.py

@@ -12,7 +12,7 @@ class WWBOTA(SSESpotProvider):
     SPOTS_URL = "https://api.wwbota.net/spots/"
 
     def __init__(self, provider_config):
-        super().__init__(provider_config, self.SPOTS_URL)
+        super().__init__("WWBOTA", provider_config, self.SPOTS_URL)
 
     def _sse_message_to_spot(self, message):
         source_spot = json.loads(message)

spotproviders/wwff.py

@@ -14,7 +14,7 @@ class WWFF(HTTPSpotProvider):
     SPOTS_URL = "https://spots.wwff.co/static/spots.json"
 
     def __init__(self, provider_config):
-        super().__init__(provider_config, self.SPOTS_URL, self.POLL_INTERVAL_SEC)
+        super().__init__("WWFF", provider_config, self.SPOTS_URL, self.POLL_INTERVAL_SEC)
 
     def _http_response_to_spots(self, http_response):
         new_spots = []

spotproviders/xota.py

@@ -1,6 +1,4 @@
-import csv
 import json
-import logging
 from datetime import datetime
 
 import pytz
@@ -12,36 +10,25 @@ from spotproviders.websocket_spot_provider import WebsocketSpotProvider
 
 class XOTA(WebsocketSpotProvider):
     """Spot provider for servers based on the "xOTA" software at https://github.com/nischu/xOTA/
-    The provider typically doesn't give us a lat/lon or SIG explicitly, so our own config provides a SIG and a reference
+    The provider typically doesn't give us a lat/lon or SIG explicitly, so our own config provides a SIG which we can
-    to a local CSV file with location information. This functionality is implemented for TOTA events, of which there are
+    then use for lookups. This functionality is implemented for Toilets on the Air events, of which there are
-    several - so a plain lookup of a "TOTA reference" doesn't make sense, it depends on which TOTA and hence which server
+    several - so a plain lookup of a "TOTA reference" doesn't make sense, it depends on which TOTA, which is why we also
-    supplied the data, which is why the CSV location lookup is here and not in sig_utils."""
+    provide a sig_ref_prefix in our config. This is applied to the reference ID, so e.g. "T-01" at C3 might become
+    "C3 T-01". This allows us to provide location lookups for TOTA at several conferences."""
 
     LOCATION_DATA = {}
     SIG = None
 
     def __init__(self, provider_config):
-        super().__init__(provider_config, provider_config["url"])
+        name = provider_config["name"] if "name" in provider_config else "xOTA"
-        locations_csv = str(provider_config["locations-csv"]) if "locations-csv" in provider_config else None
+        super().__init__(name, provider_config, provider_config["url"])
         self.SIG = str(provider_config["sig"]) if "sig" in provider_config else None
-
+        self._sig_ref_prefix = str(provider_config["sig-ref-prefix"]) if "sig-ref-prefix" in provider_config else ""
-        # Load location data
-        if locations_csv:
-            try:
-                f = open(locations_csv)
-                csv_data = f.read()
-                dr = csv.DictReader(csv_data.splitlines())
-                for row in dr:
-                    self.LOCATION_DATA[row["ref"]] = {"lat": row["lat"], "lon": row["lon"]}
-            except:
-                logging.exception("Could not look up location data for XOTA source.")
 
     def _ws_message_to_spot(self, b):
         string = b.decode("utf-8")
         source_spot = json.loads(string)
-        ref_id = source_spot["reference"]["title"]
+        ref_id = self._sig_ref_prefix + " " + source_spot["reference"]["title"]
-        lat = float(self.LOCATION_DATA[ref_id]["lat"]) if ref_id in self.LOCATION_DATA else None
-        lon = float(self.LOCATION_DATA[ref_id]["lon"]) if ref_id in self.LOCATION_DATA else None
         spot = Spot(source=self.name,
                     source_id=source_spot["id"],
                     dx_call=source_spot["stationCallSign"].upper(),
@@ -49,10 +36,7 @@ class XOTA(WebsocketSpotProvider):
                     mode=source_spot["mode"].upper(),
                     sig=self.SIG,
                     sig_refs=[
-                        SIGRef(id=ref_id, sig=self.SIG or "", url=source_spot["reference"]["website"], latitude=lat,
+                        SIGRef(id=ref_id, sig=self.SIG or "", url=source_spot["reference"]["website"])],
-                               longitude=lon)],
                     time=datetime.now(pytz.UTC).timestamp(),
-                    dx_latitude=lat,
-                    dx_longitude=lon,
                     qrt=source_spot["state"] != "active")
         return spot

spotproviders/zlota.py

@@ -15,7 +15,7 @@ class ZLOTA(HTTPSpotProvider):
     LIST_URL = "https://ontheair.nz/assets/assets.json"
 
     def __init__(self, provider_config):
-        super().__init__(provider_config, self.SPOTS_URL, self.POLL_INTERVAL_SEC)
+        super().__init__("ZLOTA", provider_config, self.SPOTS_URL, self.POLL_INTERVAL_SEC)
 
     def _http_response_to_spots(self, http_response):
         new_spots = []

static/apidocs/openapi.yml

@@ -18,6 +18,12 @@ info:
     ### 1.4
     
     * Spots can now include a "propagation_mode" field, and the `/options` call enumerates the options that can have.
+    * Added support for the Diploma de Municipios Españoles (DME) SIG
+    * Renamed some SIGs to avoid confusion between Towers, Tiles and Toilets
+    * Added `comment_names` to SIGs in the `/options`, to reflect how they might be referred to in spot comments where
+      it differs from their `name`.
+    * Added `propagation_mode` field to spots
+    * Added `sig_ref_data_providers` to status and removed `cleanup`
 
     ### 1.3
 
@@ -771,7 +777,7 @@ components:
         - ZLOTA
         - WOTA
         - LLOTA
-        - WWTOTA
+        - Towers
         - Tiles
         - Cluster
         - RBN
@@ -799,11 +805,12 @@ components:
         - WOTA
         - BOTA
         - LLOTA
-        - WWTOTA
+        - Towers
         - Tiles
         - WAB
         - WAI
-        - TOTA
+        - DME
+        - Toilets
       example: POTA
 
     SIGNameIncludingNoSIG:
@@ -1373,6 +1380,16 @@ components:
           type: string
           description: The full name of the SIG
           example: Parks on the Air
+        comment_names:
+          type: array
+          description: >
+            Names by which this SIG may be referred to in cluster spot comments. Most SIGs have a
+            single entry matching their programme name (e.g. ["POTA"]), but some have none (where
+            the name is ambiguous with other SIGs, such as Tiles and Toilets on the Air) or multiple
+            entries (e.g. WWBOTA accepts both "WWBOTA" and "BOTA" since the latter is often used).
+          items:
+            type: string
+          example: [ "TOTA" ]
         ref_regex:
           type: string
           description: >
@@ -1704,6 +1721,32 @@ components:
             is zero, the provider has never updated.
           example: 1759579508
 
+    SIGRefDataProviderStatus:
+      type: object
+      properties:
+        sig_name:
+          type: string
+          description: The name of the SIG.
+          example: WWFF
+        enabled:
+          type: boolean
+          description: Whether the provider is enabled or not.
+          example: true
+        status:
+          type: string
+          description: The status of the provider.
+          example: OK
+        last_updated:
+          type: number
+          description: >
+            The last time at which this provider received data, UTC seconds since UNIX epoch. If this
+            is zero, the provider has never updated.
+          example: 1759579508
+        reference_count:
+          type: number
+          description: The number of references fetched using this provider.
+          example: 1234
+
     SpotList:
       type: array
       items:
@@ -1771,17 +1814,6 @@ components:
           type: integer
           description: Number of alerts currently in the system.
           example: 123
-        "cleanup":
-          type: object
-          properties:
-            status:
-              type: string
-              description: The status of the cleanup thread
-              example: OK
-            last_ran:
-              type: number
-              description: The last time the cleanup operation ran, UTC seconds since UNIX epoch.
-              example: 1759579508
         "webserver":
           type: object
           properties:
@@ -1812,6 +1844,11 @@ components:
           description: An array of all the solar conditions providers.
           items:
             $ref: '#/components/schemas/SolarConditionsProviderStatus'
+        sig_ref_data_providers:
+          type: array
+          description: An array of all the SIG reference data providers.
+          items:
+            $ref: '#/components/schemas/SIGRefDataProviderStatus'
 
     Options:
       type: object