Split up some code for sanity #3

core/utils.py

@@ -0,0 +1,5 @@
+# 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.
+def serialize_everything(obj):
+    return obj.__dict__

server/handlers/api/addspot.py

@@ -0,0 +1,7 @@
+import tornado
+
+# API request handler for /api/v1/spot (POST)
+class APISpotHandler(tornado.web.RequestHandler):
+    def post(self):
+        # todo
+        self.write("Hello, world")

server/handlers/api/alerts.py

@@ -0,0 +1,57 @@
+import tornado
+
+# API request handler for /api/v1/alerts
+class APIAlertsHandler(tornado.web.RequestHandler):
+    def get(self):
+        # todo
+        self.write("Hello, world")
+
+# API request handler for /api/v1/alerts/stream
+class APIAlertsStreamHandler(tornado.web.RequestHandler):
+    def get(self):
+        # todo
+        self.write("Hello, world")
+
+
+
+# Given URL query params and an alert, figure out if the alert "passes" the requested filters or is rejected. The list
+# of query parameters and their function is defined in the API docs.
+def alert_allowed_by_query(alert, query):
+    for k in query.keys():
+        match k:
+            case "received_since":
+                since = datetime.fromtimestamp(int(query.get(k)), pytz.UTC)
+                if not alert.received_time or alert.received_time <= since:
+                    return False
+            case "max_duration":
+                max_duration = int(query.get(k))
+                # Check the duration if end_time is provided. If end_time is not provided, assume the activation is
+                # "short", i.e. it always passes this check. If dxpeditions_skip_max_duration_check is true and
+                # the alert is a dxpedition, it also always passes the check.
+                if alert.is_dxpedition and (bool(query.get(
+                        "dxpeditions_skip_max_duration_check")) if "dxpeditions_skip_max_duration_check" in query.keys() else False):
+                    continue
+                if alert.end_time and alert.start_time and alert.end_time - alert.start_time > max_duration:
+                    return False
+            case "source":
+                sources = query.get(k).split(",")
+                if not alert.source or alert.source not in sources:
+                    return False
+            case "sig":
+                # If a list of sigs is provided, the alert must have a sig and it must match one of them.
+                # The special "sig" "NO_SIG", when supplied in the list, mathches alerts with no sig.
+                sigs = query.get(k).split(",")
+                include_no_sig = "NO_SIG" in sigs
+                if not alert.sig and not include_no_sig:
+                    return False
+                if alert.sig and alert.sig not in sigs:
+                    return False
+            case "dx_continent":
+                dxconts = query.get(k).split(",")
+                if not alert.dx_continent or alert.dx_continent not in dxconts:
+                    return False
+            case "dx_call_includes":
+                dx_call_includes = query.get(k).strip()
+                if not alert.dx_call or dx_call_includes.upper() not in alert.dx_call.upper():
+                    return False
+    return True

server/handlers/api/lookups.py

@@ -0,0 +1,13 @@
+import tornado
+
+# API request handler for /api/v1/lookup/call
+class APILookupCallHandler(tornado.web.RequestHandler):
+    def get(self):
+        # todo
+        self.write("Hello, world")
+
+# API request handler for /api/v1/lookup/sigref
+class APILookupSIGRefHandler(tornado.web.RequestHandler):
+    def get(self):
+        # todo
+        self.write("Hello, world")

server/handlers/api/options.py

@@ -0,0 +1,37 @@
+import json
+
+import tornado
+
+from core.config import MAX_SPOT_AGE, ALLOW_SPOTTING, WEB_UI_OPTIONS
+from core.constants import BANDS, ALL_MODES, MODE_TYPES, SIGS, CONTINENTS
+from core.utils import serialize_everything
+
+
+# API request handler for /api/v1/options
+class APIOptionsHandler(tornado.web.RequestHandler):
+    def initialize(self, status_data):
+        self.status_data = status_data
+
+    def get(self):
+        options = {"bands": BANDS,
+                   "modes": ALL_MODES,
+                   "mode_types": MODE_TYPES,
+                   "sigs": SIGS,
+                   # Spot/alert sources are filtered for only ones that are enabled in config, no point letting the user toggle things that aren't even available.
+                   "spot_sources": list(
+                       map(lambda p: p["name"], filter(lambda p: p["enabled"], self.status_data["spot_providers"]))),
+                   "alert_sources": list(
+                       map(lambda p: p["name"], filter(lambda p: p["enabled"], self.status_data["alert_providers"]))),
+                   "continents": CONTINENTS,
+                   "max_spot_age": MAX_SPOT_AGE,
+                   "spot_allowed": ALLOW_SPOTTING,
+                   "web-ui-options": WEB_UI_OPTIONS}
+        # If spotting to this server is enabled, "API" is another valid spot source even though it does not come from
+        # one of our proviers.
+        if ALLOW_SPOTTING:
+            options["spot_sources"].append("API")
+
+        self.write(json.dumps(options, default=serialize_everything))
+        self.set_status(200)
+        self.set_header("Cache-Control", "no-store")
+        self.set_header("Content-Type", "application/json")

server/handlers/api/spots.py

@@ -0,0 +1,163 @@
+import json
+import logging
+from datetime import datetime, timedelta
+
+import pytz
+import tornado
+
+from core.utils import serialize_everything
+
+
+# API request handler for /api/v1/spots
+class APISpotsHandler(tornado.web.RequestHandler):
+    def initialize(self, spots):
+        self.spots = spots
+
+    def get(self):
+        try:
+            # request.arguments contains lists for each param key because technically the client can supply multiple,
+            # reduce that to just the first entry
+            query_params = {k: v[0] for k, v in self.request.arguments.items()}
+            # Fetch all spots matching the query
+            data = get_spot_list_with_filters(self.spots, query_params)
+            self.write(json.dumps(data, default=serialize_everything))
+            self.set_status(200)
+        except ValueError as e:
+            logging.error(e)
+            self.write(json.dumps("Bad request - " + str(e), default=serialize_everything))
+            self.set_status(400)
+        except Exception as e:
+            logging.error(e)
+            self.write(json.dumps("Error - " + str(e), default=serialize_everything))
+            self.set_status(500)
+        self.set_header("Cache-Control", "no-store")
+        self.set_header("Content-Type", "application/json")
+
+
+# API request handler for /api/v1/spots/stream
+class APISpotsStreamHandler(tornado.web.RequestHandler):
+    def get(self):
+        # todo
+        self.write("Hello, world")
+
+
+
+# Utility method to apply filters to the overall spot list and return only a subset. Enables query parameters in
+# the main "spots" GET call.
+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())
+    spots = []
+    for k in spot_ids:
+        s = all_spots.get(k)
+        if s is not None:
+            spots.append(s)
+    spots = sorted(spots, key=lambda spot: (spot.time if spot and spot.time else 0), reverse=True)
+    spots = list(filter(lambda spot: spot_allowed_by_query(spot, query), spots))
+    if "limit" in query.keys():
+        spots = spots[:int(query.get("limit"))]
+
+    # Ensure only the latest spot of each callsign-SSID combo is present in the list. This relies on the
+    # list being in reverse time order, so if any future change allows re-ordering the list, that should
+    # be done *after* this. SSIDs are deliberately included here (see issue #68) because e.g. M0TRT-7
+    # and M0TRT-9 APRS transponders could well be in different locations, on different frequencies etc.
+    # This is a special consideration for the geo map and band map views (and Field Spotter) because while
+    # duplicates are fine in the main spot list (e.g. different cluster spots of the same DX) this doesn't
+    # work well for the other views.
+    if "dedupe" in query.keys():
+            dedupe = query.get("dedupe").upper() == "TRUE"
+            if dedupe:
+                spots_temp = []
+                already_seen = []
+                for s in spots:
+                    call_plus_ssid = s.dx_call + (s.dx_ssid if s.dx_ssid else "")
+                    if call_plus_ssid not in already_seen:
+                        spots_temp.append(s)
+                        already_seen.append(call_plus_ssid)
+                spots = spots_temp
+
+    return spots
+
+# Given URL query params and a spot, figure out if the spot "passes" the requested filters or is rejected. The list
+# of query parameters and their function is defined in the API docs.
+def spot_allowed_by_query(spot, query):
+    for k in query.keys():
+        match k:
+            case "since":
+                since = datetime.fromtimestamp(int(query.get(k)), pytz.UTC).timestamp()
+                if not spot.time or spot.time <= since:
+                    return False
+            case "max_age":
+                max_age = int(query.get(k))
+                since = (datetime.now(pytz.UTC) - timedelta(seconds=max_age)).timestamp()
+                if not spot.time or spot.time <= since:
+                    return False
+            case "received_since":
+                since = datetime.fromtimestamp(int(query.get(k)), pytz.UTC).timestamp()
+                if not spot.received_time or spot.received_time <= since:
+                    return False
+            case "source":
+                sources = query.get(k).split(",")
+                if not spot.source or spot.source not in sources:
+                    return False
+            case "sig":
+                # If a list of sigs is provided, the spot must have a sig and it must match one of them.
+                # The special "sig" "NO_SIG", when supplied in the list, mathches spots with no sig.
+                sigs = query.get(k).split(",")
+                include_no_sig = "NO_SIG" in sigs
+                if not spot.sig and not include_no_sig:
+                    return False
+                if spot.sig and spot.sig not in sigs:
+                    return False
+            case "needs_sig":
+                # If true, a sig is required, regardless of what it is, it just can't be missing. Mutually
+                # exclusive with supplying the special "NO_SIG" parameter to the "sig" query param.
+                needs_sig = query.get(k).upper() == "TRUE"
+                if needs_sig and not spot.sig:
+                    return False
+            case "needs_sig_ref":
+                # If true, at least one sig ref is required, regardless of what it is, it just can't be missing.
+                needs_sig_ref = query.get(k).upper() == "TRUE"
+                if needs_sig_ref and (not spot.sig_refs or len(spot.sig_refs) == 0):
+                    return False
+            case "band":
+                bands = query.get(k).split(",")
+                if not spot.band or spot.band not in bands:
+                    return False
+            case "mode":
+                modes = query.get(k).split(",")
+                if not spot.mode or spot.mode not in modes:
+                    return False
+            case "mode_type":
+                mode_types = query.get(k).split(",")
+                if not spot.mode_type or spot.mode_type not in mode_types:
+                    return False
+            case "dx_continent":
+                dxconts = query.get(k).split(",")
+                if not spot.dx_continent or spot.dx_continent not in dxconts:
+                    return False
+            case "de_continent":
+                deconts = query.get(k).split(",")
+                if not spot.de_continent or spot.de_continent not in deconts:
+                    return False
+            case "comment_includes":
+                comment_includes = query.get(k).strip()
+                if not spot.comment or comment_includes.upper() not in spot.comment.upper():
+                    return False
+            case "dx_call_includes":
+                dx_call_includes = query.get(k).strip()
+                if not spot.dx_call or dx_call_includes.upper() not in spot.dx_call.upper():
+                    return False
+            case "allow_qrt":
+                # If false, spots that are flagged as QRT are not returned.
+                prevent_qrt = query.get(k).upper() == "FALSE"
+                if prevent_qrt and spot.qrt and spot.qrt == True:
+                    return False
+            case "needs_good_location":
+                # If true, spots require a "good" location to be returned
+                needs_good_location = query.get(k).upper() == "TRUE"
+                if needs_good_location and not spot.dx_location_good:
+                    return False
+    return True

server/handlers/api/status.py

@@ -0,0 +1,17 @@
+import json
+
+import tornado
+
+from core.utils import serialize_everything
+
+
+# API request handler for /api/v1/status
+class APIStatusHandler(tornado.web.RequestHandler):
+    def initialize(self, status_data):
+        self.status_data = status_data
+
+    def get(self):
+        self.write(json.dumps(self.status_data, default=serialize_everything))
+        self.set_status(200)
+        self.set_header("Cache-Control", "no-store")
+        self.set_header("Content-Type", "application/json")

server/handlers/metrics.py

@@ -0,0 +1,12 @@
+import tornado
+from prometheus_client.openmetrics.exposition import CONTENT_TYPE_LATEST
+
+from core.prometheus_metrics_handler import get_metrics
+
+
+# Handler for Prometheus metrics endpoint
+class PrometheusMetricsHandler(tornado.web.RequestHandler):
+    def get(self):
+        self.write(get_metrics())
+        self.set_status(200)
+        self.set_header('Content-Type', CONTENT_TYPE_LATEST)

server/handlers/pagetemplate.py

@@ -0,0 +1,14 @@
+import tornado
+
+from core.config import ALLOW_SPOTTING
+from core.constants import SOFTWARE_VERSION
+
+
+# Handler for all HTML pages generated from templates
+class PageTemplateHandler(tornado.web.RequestHandler):
+    def initialize(self, template_name):
+        self.template_name = template_name
+
+    def get(self):
+        # Load named template, and provide variables used in templates
+        self.render(self.template_name + ".html", software_version=SOFTWARE_VERSION, allow_spotting=ALLOW_SPOTTING)

server/webserver.py

@@ -1,20 +1,23 @@
 import asyncio
-import json
 import os
-from datetime import datetime, timedelta
 
-import pytz
 import tornado
-from prometheus_client.openmetrics.exposition import CONTENT_TYPE_LATEST
 from tornado.web import StaticFileHandler
 
-from core.config import ALLOW_SPOTTING, MAX_SPOT_AGE, WEB_UI_OPTIONS
+from server.handlers.api.addspot import APISpotHandler
-from core.constants import SOFTWARE_VERSION, BANDS, ALL_MODES, MODE_TYPES, SIGS, CONTINENTS
+from server.handlers.api.alerts import APIAlertsHandler, APIAlertsStreamHandler
-from core.prometheus_metrics_handler import get_metrics, page_requests_counter
+from server.handlers.api.lookups import APILookupCallHandler, APILookupSIGRefHandler
+from server.handlers.api.options import APIOptionsHandler
+from server.handlers.api.spots import APISpotsHandler, APISpotsStreamHandler
+from server.handlers.api.status import APIStatusHandler
+from server.handlers.metrics import PrometheusMetricsHandler
+from server.handlers.pagetemplate import PageTemplateHandler
 
 
 # Provides the public-facing web server.
-# TODO synchronous API responses
+# TODO alerts API
+# TODO lookup APIs
+# TODO post spot API
 # TODO SSE API responses
 # TODO clean_up_sse_queues
 # TODO page & API access counters - how to do from a subclass handler? e.g.
@@ -56,7 +59,7 @@ class WebServer:
     async def start_inner(self):
         app = tornado.web.Application([
             # Routes for API calls
-            (r"/api/v1/spots", APISpotsHandler),
+            (r"/api/v1/spots", APISpotsHandler, {"spots": self.spots}),
             (r"/api/v1/alerts", APIAlertsHandler),
             (r"/api/v1/spots/stream", APISpotsStreamHandler),
             (r"/api/v1/alerts/stream", APIAlertsStreamHandler),
@@ -88,235 +91,3 @@ class WebServer:
     def clean_up_sse_queues(self):
         # todo
         pass
-
-
-# API request handler for /api/v1/spots
-class APISpotsHandler(tornado.web.RequestHandler):
-    def get(self):
-        # todo
-        self.write("Hello, world")
-
-# API request handler for /api/v1/alerts
-class APIAlertsHandler(tornado.web.RequestHandler):
-    def get(self):
-        # todo
-        self.write("Hello, world")
-
-# API request handler for /api/v1/spots/stream
-class APISpotsStreamHandler(tornado.web.RequestHandler):
-    def get(self):
-        # todo
-        self.write("Hello, world")
-
-# API request handler for /api/v1/alerts/stream
-class APIAlertsStreamHandler(tornado.web.RequestHandler):
-    def get(self):
-        # todo
-        self.write("Hello, world")
-
-# API request handler for /api/v1/options
-class APIOptionsHandler(tornado.web.RequestHandler):
-    def initialize(self, status_data):
-        self.status_data = status_data
-
-    def get(self):
-        options = {"bands": BANDS,
-                   "modes": ALL_MODES,
-                   "mode_types": MODE_TYPES,
-                   "sigs": SIGS,
-                   # Spot/alert sources are filtered for only ones that are enabled in config, no point letting the user toggle things that aren't even available.
-                   "spot_sources": list(
-                       map(lambda p: p["name"], filter(lambda p: p["enabled"], self.status_data["spot_providers"]))),
-                   "alert_sources": list(
-                       map(lambda p: p["name"], filter(lambda p: p["enabled"], self.status_data["alert_providers"]))),
-                   "continents": CONTINENTS,
-                   "max_spot_age": MAX_SPOT_AGE,
-                   "spot_allowed": ALLOW_SPOTTING,
-                   "web-ui-options": WEB_UI_OPTIONS}
-        # If spotting to this server is enabled, "API" is another valid spot source even though it does not come from
-        # one of our proviers.
-        if ALLOW_SPOTTING:
-            options["spot_sources"].append("API")
-
-        self.write(json.dumps(options, default=serialize_everything))
-        self.set_header("Cache-Control", "no-store")
-        self.set_header("Content-Type", "application/json")
-
-# API request handler for /api/v1/status
-class APIStatusHandler(tornado.web.RequestHandler):
-    def initialize(self, status_data):
-        self.status_data = status_data
-
-    def get(self):
-        self.write(json.dumps(self.status_data, default=serialize_everything))
-        self.set_header("Cache-Control", "no-store")
-        self.set_header("Content-Type", "application/json")
-
-# API request handler for /api/v1/lookup/call
-class APILookupCallHandler(tornado.web.RequestHandler):
-    def get(self):
-        # todo
-        self.write("Hello, world")
-
-# API request handler for /api/v1/lookup/sigref
-class APILookupSIGRefHandler(tornado.web.RequestHandler):
-    def get(self):
-        # todo
-        self.write("Hello, world")
-
-# API request handler for /api/v1/spot (POST)
-class APISpotHandler(tornado.web.RequestHandler):
-    def post(self):
-        # todo
-        self.write("Hello, world")
-
-
-# Handler for all HTML pages generated from templates
-class PageTemplateHandler(tornado.web.RequestHandler):
-    def initialize(self, template_name):
-        self.template_name = template_name
-
-    def get(self):
-        # Load named template, and provide variables used in templates
-        self.render(self.template_name + ".html", software_version=SOFTWARE_VERSION, allow_spotting=ALLOW_SPOTTING)
-
-# Handler for Prometheus metrics endpoint
-class PrometheusMetricsHandler(tornado.web.RequestHandler):
-    def get(self):
-        self.write(get_metrics())
-        self.set_status(200)
-        self.set_header('Content-Type', CONTENT_TYPE_LATEST)
-
-
-
-# Given URL query params and a spot, figure out if the spot "passes" the requested filters or is rejected. The list
-# of query parameters and their function is defined in the API docs.
-def spot_allowed_by_query(spot, query):
-    for k in query.keys():
-        match k:
-            case "since":
-                since = datetime.fromtimestamp(int(query.get(k)), pytz.UTC).timestamp()
-                if not spot.time or spot.time <= since:
-                    return False
-            case "max_age":
-                max_age = int(query.get(k))
-                since = (datetime.now(pytz.UTC) - timedelta(seconds=max_age)).timestamp()
-                if not spot.time or spot.time <= since:
-                    return False
-            case "received_since":
-                since = datetime.fromtimestamp(int(query.get(k)), pytz.UTC).timestamp()
-                if not spot.received_time or spot.received_time <= since:
-                    return False
-            case "source":
-                sources = query.get(k).split(",")
-                if not spot.source or spot.source not in sources:
-                    return False
-            case "sig":
-                # If a list of sigs is provided, the spot must have a sig and it must match one of them.
-                # The special "sig" "NO_SIG", when supplied in the list, mathches spots with no sig.
-                sigs = query.get(k).split(",")
-                include_no_sig = "NO_SIG" in sigs
-                if not spot.sig and not include_no_sig:
-                    return False
-                if spot.sig and spot.sig not in sigs:
-                    return False
-            case "needs_sig":
-                # If true, a sig is required, regardless of what it is, it just can't be missing. Mutually
-                # exclusive with supplying the special "NO_SIG" parameter to the "sig" query param.
-                needs_sig = query.get(k).upper() == "TRUE"
-                if needs_sig and not spot.sig:
-                    return False
-            case "needs_sig_ref":
-                # If true, at least one sig ref is required, regardless of what it is, it just can't be missing.
-                needs_sig_ref = query.get(k).upper() == "TRUE"
-                if needs_sig_ref and (not spot.sig_refs or len(spot.sig_refs) == 0):
-                    return False
-            case "band":
-                bands = query.get(k).split(",")
-                if not spot.band or spot.band not in bands:
-                    return False
-            case "mode":
-                modes = query.get(k).split(",")
-                if not spot.mode or spot.mode not in modes:
-                    return False
-            case "mode_type":
-                mode_types = query.get(k).split(",")
-                if not spot.mode_type or spot.mode_type not in mode_types:
-                    return False
-            case "dx_continent":
-                dxconts = query.get(k).split(",")
-                if not spot.dx_continent or spot.dx_continent not in dxconts:
-                    return False
-            case "de_continent":
-                deconts = query.get(k).split(",")
-                if not spot.de_continent or spot.de_continent not in deconts:
-                    return False
-            case "comment_includes":
-                comment_includes = query.get(k).strip()
-                if not spot.comment or comment_includes.upper() not in spot.comment.upper():
-                    return False
-            case "dx_call_includes":
-                dx_call_includes = query.get(k).strip()
-                if not spot.dx_call or dx_call_includes.upper() not in spot.dx_call.upper():
-                    return False
-            case "allow_qrt":
-                # If false, spots that are flagged as QRT are not returned.
-                prevent_qrt = query.get(k).upper() == "FALSE"
-                if prevent_qrt and spot.qrt and spot.qrt == True:
-                    return False
-            case "needs_good_location":
-                # If true, spots require a "good" location to be returned
-                needs_good_location = query.get(k).upper() == "TRUE"
-                if needs_good_location and not spot.dx_location_good:
-                    return False
-    return True
-
-
-# Given URL query params and an alert, figure out if the alert "passes" the requested filters or is rejected. The list
-# of query parameters and their function is defined in the API docs.
-def alert_allowed_by_query(alert, query):
-    for k in query.keys():
-        match k:
-            case "received_since":
-                since = datetime.fromtimestamp(int(query.get(k)), pytz.UTC)
-                if not alert.received_time or alert.received_time <= since:
-                    return False
-            case "max_duration":
-                max_duration = int(query.get(k))
-                # Check the duration if end_time is provided. If end_time is not provided, assume the activation is
-                # "short", i.e. it always passes this check. If dxpeditions_skip_max_duration_check is true and
-                # the alert is a dxpedition, it also always passes the check.
-                if alert.is_dxpedition and (bool(query.get(
-                        "dxpeditions_skip_max_duration_check")) if "dxpeditions_skip_max_duration_check" in query.keys() else False):
-                    continue
-                if alert.end_time and alert.start_time and alert.end_time - alert.start_time > max_duration:
-                    return False
-            case "source":
-                sources = query.get(k).split(",")
-                if not alert.source or alert.source not in sources:
-                    return False
-            case "sig":
-                # If a list of sigs is provided, the alert must have a sig and it must match one of them.
-                # The special "sig" "NO_SIG", when supplied in the list, mathches alerts with no sig.
-                sigs = query.get(k).split(",")
-                include_no_sig = "NO_SIG" in sigs
-                if not alert.sig and not include_no_sig:
-                    return False
-                if alert.sig and alert.sig not in sigs:
-                    return False
-            case "dx_continent":
-                dxconts = query.get(k).split(",")
-                if not alert.dx_continent or alert.dx_continent not in dxconts:
-                    return False
-            case "dx_call_includes":
-                dx_call_includes = query.get(k).strip()
-                if not alert.dx_call or dx_call_includes.upper() not in alert.dx_call.upper():
-                    return False
-    return True
-
-
-# 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.
-def serialize_everything(obj):
-    return obj.__dict__

spothole.py

@@ -1,6 +1,7 @@
 # Main script
 import importlib
 import logging
+import os
 import signal
 import sys
 
@@ -28,7 +29,7 @@ run = True
 def shutdown(sig, frame):
     global run
 
-    logging.info("Stopping program, this may take up to 60 seconds...")
+    logging.info("Stopping program...")
     web_server.stop()
     for p in spot_providers:
         if p.enabled:
@@ -40,6 +41,7 @@ def shutdown(sig, frame):
     lookup_helper.stop()
     spots.close()
     alerts.close()
+    os._exit(0)
 
 
 # Utility method to get a spot provider based on the class specified in its config entry.

webassets/js/spots.js

@@ -48,6 +48,7 @@ function restartSSEConnection() {
     };
 
     evtSource.onerror = function(err) {
+        evtSource.close();
         setTimeout(restartSSEConnection(), 1000);
     };
 }