feat: 增加日志模块

backend/monitoring/views.py

@@ -1,5 +1,8 @@
 from __future__ import annotations
 
+import json
+
+from django.views.decorators.csrf import csrf_exempt
 from django.http import HttpResponse, StreamingHttpResponse
 from rest_framework.decorators import api_view
 from rest_framework.response import Response
@@ -34,25 +37,20 @@ def video_status(request):
 
 
 def video_frame(request):
-    status = video_service.get_status()
-    if not status["available"]:
-        return HttpResponse(
-            status.get("source_detail") or f"JPEG frame directory not found: {status['frame_dir']}",
-            status=503,
-            content_type="text/plain; charset=utf-8",
-        )
-
     try:
-        frame = video_service.get_next_frame()
+        frame, headers = video_service.get_next_frame_with_headers()
     except (FileNotFoundError, RuntimeError) as error:
+        status = video_service.get_status()
         return HttpResponse(
-            str(error),
+            status.get("source_detail") or str(error),
             status=503,
             content_type="text/plain; charset=utf-8",
         )
 
     response = HttpResponse(frame, content_type="image/jpeg")
     response["Cache-Control"] = "no-store, no-cache, must-revalidate, max-age=0"
+    for key, value in headers.items():
+        response[key] = value
     return response
 
 
@@ -76,3 +74,18 @@ def video_stream(request):
     )
     response["Cache-Control"] = "no-store, no-cache, must-revalidate, max-age=0"
     return response
+
+
+@csrf_exempt
+@api_view(["POST"])
+def video_display_probe(request):
+    try:
+        payload = json.loads(request.body.decode("utf-8"))
+    except (UnicodeDecodeError, json.JSONDecodeError):
+        return Response({"detail": "invalid json"}, status=400)
+
+    if not isinstance(payload, dict):
+        return Response({"detail": "expected json object"}, status=400)
+
+    video_service.record_display_probe(payload)
+    return Response({"ok": True})