fix(hub): preserve key monitors when enrich_monitor returns partial payload

Co-authored-by: Cursor <cursoragent@cursor.com>

hub_bridge.py

@@ -52,6 +52,30 @@ def _row_to_dict(row):
     return dict(row) if row is not None else {}
 
 
+def build_hub_monitor_payload(
+    *,
+    keys,
+    orders,
+    trends,
+    rolls,
+    enrich=None,
+) -> dict:
+    """合并 enrich 增量字段；enrich 只返回 trends 等局部时不得丢掉 keys/orders。"""
+    payload = {
+        "ok": True,
+        "keys": keys,
+        "orders": orders,
+        "trends": trends,
+        "rolls": rolls,
+        "key_prices": [],
+    }
+    if callable(enrich):
+        extra = enrich(keys=keys, orders=orders, trends=trends, rolls=rolls)
+        if isinstance(extra, dict):
+            payload.update(extra)
+    return payload
+
+
 _FAIL_HINTS = (
     "失败",
     "错误",
@@ -280,20 +304,24 @@ def register_hub_routes(app):
         enrich = c.get("enrich_monitor")
         if callable(enrich):
             try:
-                payload = enrich(keys=keys, orders=orders, trends=trends, rolls=rolls)
-                if isinstance(payload, dict):
-                    return jsonify({"ok": True, **payload})
+                return jsonify(
+                    build_hub_monitor_payload(
+                        keys=keys,
+                        orders=orders,
+                        trends=trends,
+                        rolls=rolls,
+                        enrich=enrich,
+                    )
+                )
             except Exception as e:
                 return jsonify({"ok": False, "msg": str(e)}), 500
         return jsonify(
-            {
-                "ok": True,
-                "keys": keys,
-                "orders": orders,
-                "trends": trends,
-                "rolls": rolls,
-                "key_prices": [],
-            }
+            build_hub_monitor_payload(
+                keys=keys,
+                orders=orders,
+                trends=trends,
+                rolls=rolls,
+            )
         )
 
     @app.route("/api/hub/ohlcv")

tests/test_hub_monitor_payload.py

@@ -0,0 +1,39 @@
+"""hub /api/hub/monitor：enrich 局部返回时须保留 keys。"""
+from __future__ import annotations
+
+import sys
+import unittest
+from pathlib import Path
+
+ROOT = Path(__file__).resolve().parents[1]
+sys.path.insert(0, str(ROOT))
+
+from hub_bridge import build_hub_monitor_payload  # noqa: E402
+
+
+class TestHubMonitorPayload(unittest.TestCase):
+    def test_partial_enrich_keeps_keys(self):
+        keys = [{"id": 7, "symbol": "BTC/USDT"}]
+        orders = [{"id": 1}]
+        trends = [{"id": 9, "symbol": "ETH/USDT"}]
+        rolls = []
+
+        def enrich_only_trends(**_kw):
+            return {"trends": [{"id": 9, "add_count": 2}]}
+
+        out = build_hub_monitor_payload(
+            keys=keys,
+            orders=orders,
+            trends=trends,
+            rolls=rolls,
+            enrich=enrich_only_trends,
+        )
+        self.assertTrue(out["ok"])
+        self.assertEqual(out["keys"], keys)
+        self.assertEqual(out["orders"], orders)
+        self.assertEqual(out["rolls"], rolls)
+        self.assertEqual(out["trends"][0]["add_count"], 2)
+
+
+if __name__ == "__main__":
+    unittest.main()