fix(锁与查询组): #12 熔断器状态转换加锁；#10 问答人名匹配改 JSON_CONTAINS 精确匹配(防 LIKE 子串/特殊字符误匹配)；#4 OracleDB 复合写加锁；#6 每消费者独立 VideoProcessor(消除 adapter.timeout 共享竞争)；#15 done 视频文件被覆盖(mtime>processed_at)自动重置重分析

fam-edge/src/fam_edge/model_adapters/circuit_breaker.py

@@ -8,6 +8,7 @@
 """
 from collections import deque
 import time
+import threading
 
 
 class CircuitBreaker:
@@ -21,27 +22,31 @@ class CircuitBreaker:
         self.cooldown = cooldown
         self.state = 'CLOSED'
         self.last_failure = None
+        self._lock = threading.Lock()  # 状态转换加锁，防多线程竞争
 
     def record_failure(self):
         if not self.enabled:
             return
-        self.failures.append(time.time())
-        if len(self.failures) >= self.threshold:
-            self.state = 'OPEN'
-            self.last_failure = time.time()
+        with self._lock:
+            self.failures.append(time.time())
+            if len(self.failures) >= self.threshold:
+                self.state = 'OPEN'
+                self.last_failure = time.time()
 
     def record_success(self):
         if not self.enabled:
             return
-        self.failures.clear()
-        self.state = 'CLOSED'
+        with self._lock:
+            self.failures.clear()
+            self.state = 'CLOSED'
 
     def is_open(self):
         if not self.enabled:
             return False
-        if self.state == 'OPEN' and self.last_failure and time.time() - self.last_failure > self.cooldown:
-            self.state = 'HALF_OPEN'
-        return self.state == 'OPEN'
+        with self._lock:
+            if self.state == 'OPEN' and self.last_failure and time.time() - self.last_failure > self.cooldown:
+                self.state = 'HALF_OPEN'
+            return self.state == 'OPEN'
 
     def __repr__(self):
         return f"CircuitBreaker(state={self.state}, enabled={self.enabled})"