完善直播节点监控与边缘代理

backend/services/stream_service.py

@@ -7,6 +7,7 @@ from services.multicast_detector import multicast_detector
 from services.transcoder import transcode_mgr
 from config import settings
 import json
+from datetime import datetime
 
 
 class StreamService:
@@ -17,13 +18,19 @@ class StreamService:
                             cover_url: str | None = None,
                             scheduled_at: str | None = None) -> Stream:
         import uuid
+        scheduled_datetime = None
+        if scheduled_at:
+            try:
+                scheduled_datetime = datetime.fromisoformat(scheduled_at.replace("Z", "+00:00"))
+            except ValueError as exc:
+                raise ValueError("预定开播时间格式无效") from exc
         stream = Stream(
             title=title,
             description=description,
             cover_url=cover_url,
             stream_key=uuid.uuid4().hex,
             status=StreamStatus.pending,
-            scheduled_at=scheduled_at,
+            scheduled_at=scheduled_datetime,
         )
         self.db.add(stream)
         await self.db.commit()
@@ -113,4 +120,8 @@ class StreamService:
             "lines": lines,
             "qualities": [{"label": q["label"], "width": q["width"], "height": q["height"]} for q in settings.qualities],
             "multicast_available": multicast_detector.is_available(),
+            "selected_node": {
+                "id": best_node["id"],
+                "name": best_node["name"],
+            } if best_node else None,
         }