fix(HEL-482): 开盘前分时回退最近交易日，并接通中枢失败回旧通道

Co-authored-by: Cursor <cursoragent@cursor.com>
Co-authored-by: multica-agent <github@multica.ai>

xiaobai-datahub/datahub/adapters/eastmoney.py

@@ -14,6 +14,7 @@ from datahub.numbers import finite_number, round4
 EASTMONEY_INDEX_URL = "https://push2.eastmoney.com/api/qt/ulist.np/get"
 EASTMONEY_CLIST_URL = "https://push2.eastmoney.com/api/qt/clist/get"
 TRENDS_URL = "https://push2delay.eastmoney.com/api/qt/stock/trends2/get"
+HIS_TRENDS_URL = "https://push2his.eastmoney.com/api/qt/stock/trends2/get"
 BROWSER_UA = (
     "Mozilla/5.0 (Windows NT 10.0; Win64; x64) "
     "AppleWebKit/537.36 (KHTML, like Gecko) Chrome/138.0.0.0 Safari/537.36"
@@ -166,7 +167,7 @@ class EastmoneyAdapter(MarketAdapter):
             )
         return result
 
-    def fetch_intraday(self, ts_code: str) -> dict[str, Any]:
+    def fetch_intraday(self, ts_code: str, date: str = "") -> dict[str, Any]:
         code = str(ts_code or "").upper()
         if code in INDEX_SECIDS:
             secid = INDEX_SECIDS[code]
@@ -178,25 +179,32 @@ class EastmoneyAdapter(MarketAdapter):
             secid = f"{market}.{symbol}"
             entity = "stock"
             identifier = symbol
-        payload = self._get_json(
-            TRENDS_URL,
-            {
-                "secid": secid,
-                "fields1": "f1,f2,f3,f4,f5,f6,f7,f8,f9,f10,f11,f12,f13",
-                "fields2": "f51,f52,f53,f54,f55,f56,f57,f58",
-                "iscr": "0",
-                "ndays": "1",
-            },
-            referer="https://quote.eastmoney.com/",
-        )
-        data = payload.get("data") or {}
-        points = []
-        for raw in data.get("trends") or []:
-            point = _parse_trend(raw)
-            if point:
-                points.append(point)
+        params = {
+            "secid": secid,
+            "fields1": "f1,f2,f3,f4,f5,f6,f7,f8,f9,f10,f11,f12,f13",
+            "fields2": "f51,f52,f53,f54,f55,f56,f57,f58",
+            "iscr": "0",
+        }
+        data: dict[str, Any] = {}
+        points: list[dict[str, Any]] = []
+        last_error: Exception | None = None
+        for url, ndays in ((TRENDS_URL, "1"), (TRENDS_URL, "5"), (HIS_TRENDS_URL, "5")):
+            try:
+                payload = self._get_json(
+                    url,
+                    {**params, "ndays": ndays},
+                    referer="https://quote.eastmoney.com/",
+                )
+            except AdapterError as exc:
+                last_error = exc
+                continue
+            data = payload.get("data") or {}
+            parsed = [point for raw in data.get("trends") or [] if (point := _parse_trend(raw))]
+            points = _preferred_session(parsed, date)
+            if points:
+                break
         if not points:
-            raise AdapterError("No intraday chart data returned")
+            raise AdapterError("No intraday chart data returned") from last_error
         return {
             "entity_type": entity,
             "identifier": identifier,
@@ -227,6 +235,23 @@ class EastmoneyAdapter(MarketAdapter):
             raise AdapterError(f"eastmoney request failed: {exc}") from exc
 
 
+def _preferred_session(points: list[dict[str, Any]], preferred_date: str = "") -> list[dict[str, Any]]:
+    if not points:
+        return []
+    want = ""
+    digits = str(preferred_date or "").replace("-", "")[:8]
+    if len(digits) == 8 and digits.isdigit():
+        want = f"{digits[:4]}-{digits[4:6]}-{digits[6:8]}"
+    if want:
+        matched = [point for point in points if str(point.get("date") or "") == want]
+        if matched:
+            return matched
+    latest = max(str(point.get("date") or "") for point in points)
+    if not latest:
+        return points
+    return [point for point in points if str(point.get("date") or "") == latest]
+
+
 def _parse_trend(raw: Any) -> dict[str, Any] | None:
     text = str(raw or "")
     parts = text.split(",")
@@ -237,11 +262,14 @@ def _parse_trend(raw: Any) -> dict[str, Any] | None:
         when = datetime.strptime(stamp, "%Y-%m-%d %H:%M")
     except ValueError:
         return None
+    close = round4(finite_number(parts[2]))
+    if close <= 0:
+        return None
     return {
         "time": when.strftime("%H:%M"),
         "date": when.strftime("%Y-%m-%d"),
         "open": round4(finite_number(parts[1])),
-        "close": round4(finite_number(parts[2])),
+        "close": close,
         "high": round4(finite_number(parts[3])),
         "low": round4(finite_number(parts[4])),
         "avg_price": round4(finite_number(parts[7] if len(parts) > 7 else parts[2])),