Keep logs for Telemetry API endpoint requests

Signed-off-by: Alfredos-Panagiotis Damkalis <fredy@fredy.gr>

db/api/views.py

@@ -1,5 +1,6 @@
 """SatNOGS DB API django rest framework Views"""
 from django.conf import settings
+from django.core.cache import cache
 from django.core.files.base import ContentFile
 from django.db.models import F
 from django.shortcuts import get_object_or_404
@@ -525,6 +526,19 @@ class TelemetryViewSet(  # pylint: disable=R0901,R0912,R0915
     parser_classes = (FormParser, MultiPartParser, FileUploadParser)
     pagination_class = pagination.LinkedHeaderPageNumberPagination
 
+    def list(self, request, *args, **kwargs):
+        if settings.LOG_TELEMETRY_REQUESTS:
+            user_id = str(request.user.id)
+            remote_address = str(request.META.get("REMOTE_ADDR"))
+            x_forwarded_for = str(request.META.get("HTTP_X_FORWARDED_FOR"))
+            timestamp = now().isoformat()
+            request_data = user_id + ';' + remote_address + ';' + x_forwarded_for + ';' + timestamp
+            cache.set(
+                'telemetry_log_' + user_id + '_' + timestamp, request_data,
+                settings.TELEMETRY_LOGS_TIME_TO_LIVE
+            )
+        return super().list(request, *args, **kwargs)
+
     @extend_schema(
         responses={'201': None},  # None
     )

db/settings.py

@@ -482,6 +482,10 @@ SPACE_TRACK_PASSWORD = config('SPACE_TRACK_PASSWORD', default='')
 # Exported Frames
 EXPORTED_FRAMESET_TIME_TO_LIVE = config('EXPORTED_FRAMESET_TIME_TO_LIVE', default=21600, cast=int)
 
+# Keep Telemetry requests logs
+LOG_TELEMETRY_REQUESTS = config('LOG_TELEMETRY_REQUESTS', default=True, cast=bool)
+TELEMETRY_LOGS_TIME_TO_LIVE = config('TELEMETRY_LOGS_TIME_TO_LIVE', default=259200, cast=int)
+
 # Influx DB for decoded data_id
 USE_INFLUX = config('USE_INFLUX', default=False, cast=bool)
 INFLUX_HOST = config('INFLUX_HOST', default='localhost')