P1-2: 统一Dify调用点 - 删除detect-intent死链路(approval/byod) + routing_service共享client修复连接泄漏 + 前端死代码清理

2026-07-18 01:05:20 +08:00
parent af392f2bf0
commit aeb4e0cf39
5 changed files with 54 additions and 424 deletions
@@ -35,6 +35,24 @@ from app.services.ws_manager import manager as ws_manager
 logger = logging.getLogger(__name__)


+# =============================================================================
+# 共享 httpx 客户端（v4.0 P1-2：修复每次调用新建连接的泄漏问题）
+# =============================================================================
+_routing_client: Optional[httpx.AsyncClient] = None
+
+
+async def _get_routing_client(timeout: float) -> httpx.AsyncClient:
+    """获取共享的 httpx.AsyncClient（懒加载单例）。
+
+    为什么：之前每次 detect_routing_intent 调用都 `async with httpx.AsyncClient()`
+    新建连接池，高并发下产生大量 TIME_WAIT 连接（与 AIService 修复前同源问题）。
+    """
+    global _routing_client
+    if _routing_client is None or _routing_client.is_closed:
+        _routing_client = httpx.AsyncClient(timeout=httpx.Timeout(timeout))
+    return _routing_client
+
+
 # =============================================================================
 # 路由关键词预过滤列表
 # =============================================================================
@@ -169,24 +187,24 @@ async def detect_routing_intent(text: str, employee_id: str = "") -> dict:
        "Content-Type": "application/json",
    }

-    async with httpx.AsyncClient(timeout=httpx.Timeout(timeout)) as client:
-        response = await client.post(url, json=body, headers=headers)
-        response.raise_for_status()
-        data = response.json()
+    client = await _get_routing_client(timeout)
+    response = await client.post(url, json=body, headers=headers)
+    response.raise_for_status()
+    data = response.json()

-        # 解析 Dify 原生响应：answer 字段包含 AI 返回的 JSON 字符串
-        answer = data.get("answer", "")
-        parsed = json.loads(answer)
+    # 解析 Dify 原生响应：answer 字段包含 AI 返回的 JSON 字符串
+    answer = data.get("answer", "")
+    parsed = json.loads(answer)

-        # 解析统一意图识别的 6 个字段
-        return {
-            "is_approval_request": bool(parsed.get("is_approval_request", False)),
-            "confidence": float(parsed.get("confidence", 0.0)),
-            "approval_type": parsed.get("approval_type"),
-            "intent_type": str(parsed.get("intent_type", "chitchat")),
-            "business_category": parsed.get("business_category"),
-            "routing_confidence": float(parsed.get("routing_confidence", 0.0)),
-        }
+    # 解析统一意图识别的 6 个字段
+    return {
+        "is_approval_request": bool(parsed.get("is_approval_request", False)),
+        "confidence": float(parsed.get("confidence", 0.0)),
+        "approval_type": parsed.get("approval_type"),
+        "intent_type": str(parsed.get("intent_type", "chitchat")),
+        "business_category": parsed.get("business_category"),
+        "routing_confidence": float(parsed.get("routing_confidence", 0.0)),
+    }


 # =============================================================================