条件单列表改为中控后台并行缓存并以 SSE 推浏览器，下发仍走中控到实例。

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

lib/bridge_client_lib.py

@@ -215,6 +215,40 @@ def fetch_cond_orders(inst: dict[str, Any]) -> dict[str, Any]:
         return {"ok": False, "msg": str(e) or "拉取失败", "orders": [], "instance_id": inst.get("id")}
 
 
+def pull_all_cond_orders() -> list[dict[str, Any]]:
+    """并行拉取各机条件单并展平为带 instance 字段的订单列表."""
+    instances = list_instances(enabled_only=True)
+    if not instances:
+        return []
+    by_id: dict[Any, dict[str, Any]] = {}
+    with ThreadPoolExecutor(max_workers=min(8, len(instances))) as pool:
+        futs = {pool.submit(fetch_cond_orders, inst): inst for inst in instances}
+        for fut in as_completed(futs):
+            inst = futs[fut]
+            try:
+                data = fut.result()
+            except Exception as e:
+                data = {
+                    "ok": False,
+                    "msg": str(e) or "拉取失败",
+                    "orders": [],
+                    "instance_id": inst.get("id"),
+                    "instance_name": inst.get("name"),
+                }
+            by_id[inst.get("id")] = data if isinstance(data, dict) else {}
+    all_orders: list[dict[str, Any]] = []
+    for inst in instances:
+        data = by_id.get(inst["id"]) or {}
+        for o in data.get("orders") or []:
+            if not isinstance(o, dict):
+                continue
+            item = dict(o)
+            item["instance_id"] = inst.get("id")
+            item["instance_name"] = inst.get("name")
+            all_orders.append(item)
+    return all_orders
+
+
 def pull_all_enabled() -> list[dict[str, Any]]:
     instances = list_instances(enabled_only=True)
     if not instances:

lib/cond_orders_cache_lib.py

@@ -0,0 +1,232 @@
+"""条件单热缓存:后台常驻并行从实例拉取;浏览器只读缓存 + SSE.
+下发/撤单/改出场仍由中控 POST 到实例,成功后触发刷新.
+"""
+from __future__ import annotations
+
+import json
+import os
+import queue
+import threading
+import time
+from collections.abc import Iterator
+from typing import Any
+
+
+def _poll_interval_sec() -> float:
+    try:
+        return max(
+            3.0,
+            float(
+                os.getenv("HUB_COND_POLL_INTERVAL_SEC")
+                or os.getenv("HUB_PULL_INTERVAL_SEC")
+                or 10
+            ),
+        )
+    except (TypeError, ValueError):
+        return 10.0
+
+
+def _sse_heartbeat_sec() -> float:
+    try:
+        return max(10.0, float(os.getenv("HUB_SSE_HEARTBEAT_SEC") or 25))
+    except (TypeError, ValueError):
+        return 25.0
+
+
+def _candidates_from_snaps(rows: list[dict[str, Any]]) -> list[dict[str, Any]]:
+    out: list[dict[str, Any]] = []
+    for row in rows or []:
+        snap = row.get("snapshot") if isinstance(row.get("snapshot"), dict) else {}
+        brief = snap.get("positions_brief") or snap.get("positions") or []
+        has_pos = isinstance(brief, list) and len(brief) > 0
+        locked = bool(snap.get("cond_order_locked"))
+        selectable = bool(row.get("online")) and not has_pos and not locked
+        inst = snap.get("instance") if isinstance(snap.get("instance"), dict) else {}
+        mode = str(inst.get("mode") or "").strip().lower()
+        if mode not in ("sim", "live"):
+            mode = ""
+        out.append(
+            {
+                "id": row.get("id"),
+                "name": row.get("name"),
+                "online": bool(row.get("online")),
+                "has_position": has_pos,
+                "cond_order_locked": locked,
+                "selectable": selectable,
+                "mode": mode,
+                "error": row.get("error") or "",
+            }
+        )
+    return out
+
+
+class CondOrdersStore:
+    def __init__(self) -> None:
+        self._lock = threading.RLock()
+        self.version = 0
+        self.orders: list[dict[str, Any]] = []
+        self.candidates: list[dict[str, Any]] = []
+        self.refreshing = True
+        self.last_error: str | None = None
+        self.updated_at: str = ""
+        self._ready = False
+        self._subscribers: list[queue.Queue[str | None]] = []
+        self._stop = threading.Event()
+        self._refresh = threading.Event()
+        self._thread: threading.Thread | None = None
+
+    def start(self) -> None:
+        if self._thread and self._thread.is_alive():
+            return
+        self._stop.clear()
+        with self._lock:
+            self.refreshing = True
+            self._ready = False
+        self._thread = threading.Thread(
+            target=self._loop,
+            daemon=True,
+            name="hub-cond-orders-pull",
+        )
+        self._thread.start()
+
+    def stop(self) -> None:
+        self._stop.set()
+        self._refresh.set()
+        self._broadcast(close=True)
+
+    def request_refresh(self) -> None:
+        self._refresh.set()
+
+    def snapshot_dict(self) -> dict[str, Any]:
+        with self._lock:
+            return {
+                "ok": True,
+                "orders": list(self.orders),
+                "candidates": list(self.candidates),
+                "cond_version": self.version,
+                "refreshing": self.refreshing,
+                "updated_at": self.updated_at,
+                "error": self.last_error,
+                "from_cache": True,
+                "poll_interval_sec": _poll_interval_sec(),
+                "ready": self._ready,
+            }
+
+    def event_dict(self) -> dict[str, Any]:
+        with self._lock:
+            return {
+                "cond_version": self.version,
+                "updated_at": self.updated_at,
+                "refreshing": self.refreshing,
+                "ok": True,
+                "error": self.last_error,
+                "poll_interval_sec": _poll_interval_sec(),
+            }
+
+    def _overview_rows(self) -> list[dict[str, Any]]:
+        try:
+            from lib.overview_cache_lib import overview_store
+
+            snap = overview_store.snapshot_dict()
+            rows = snap.get("instances") if isinstance(snap, dict) else None
+            if isinstance(rows, list) and rows:
+                return rows
+        except Exception:
+            pass
+        try:
+            from lib.bridge_client_lib import pull_all_enabled
+
+            return pull_all_enabled()
+        except Exception:
+            return []
+
+    def _loop(self) -> None:
+        while not self._stop.is_set():
+            self._refresh_once()
+            if self._stop.is_set():
+                break
+            self._refresh.clear()
+            self._refresh.wait(timeout=_poll_interval_sec())
+
+    def _refresh_once(self) -> None:
+        with self._lock:
+            self.refreshing = True
+        self._broadcast()
+        try:
+            from lib.bridge_client_lib import pull_all_cond_orders
+
+            rows = self._overview_rows()
+            candidates = _candidates_from_snaps(rows)
+            orders = pull_all_cond_orders()
+            with self._lock:
+                self.version += 1
+                self.orders = orders if isinstance(orders, list) else []
+                self.candidates = candidates
+                self.updated_at = time.strftime("%Y-%m-%d %H:%M:%S")
+                self.last_error = None
+                self.refreshing = False
+                self._ready = True
+        except Exception as e:
+            with self._lock:
+                self.version += 1
+                self.last_error = str(e) or "cond_refresh_failed"
+                self.refreshing = False
+                self._ready = True
+        self._broadcast()
+
+    def _broadcast(self, *, close: bool = False) -> None:
+        with self._lock:
+            subs = list(self._subscribers)
+            event = None if close else json.dumps(self.event_dict(), ensure_ascii=False)
+        dead: list[queue.Queue[str | None]] = []
+        for q in subs:
+            try:
+                q.put_nowait(None if close else event)
+            except queue.Full:
+                try:
+                    q.get_nowait()
+                except queue.Empty:
+                    pass
+                try:
+                    q.put_nowait(event)
+                except queue.Full:
+                    dead.append(q)
+            except Exception:
+                dead.append(q)
+        if dead:
+            with self._lock:
+                for q in dead:
+                    if q in self._subscribers:
+                        self._subscribers.remove(q)
+
+    def iter_sse(self) -> Iterator[str]:
+        q: queue.Queue[str | None] = queue.Queue(maxsize=32)
+        with self._lock:
+            self._subscribers.append(q)
+        try:
+            yield _sse_frame(self.event_dict())
+            while True:
+                try:
+                    raw = q.get(timeout=_sse_heartbeat_sec())
+                except queue.Empty:
+                    yield ": heartbeat\n\n"
+                    continue
+                if raw is None:
+                    break
+                try:
+                    data = json.loads(raw)
+                except Exception:
+                    data = self.event_dict()
+                yield _sse_frame(data)
+        finally:
+            with self._lock:
+                if q in self._subscribers:
+                    self._subscribers.remove(q)
+
+
+def _sse_frame(data: dict[str, Any]) -> str:
+    body = json.dumps(data, ensure_ascii=False)
+    return f"event: cond\ndata: {body}\n\n"
+
+
+cond_orders_store = CondOrdersStore()