elevator(P1): bounded parallel delete, listFloor page, bind; Feign callWithContext

Made-with: Cursor

Former-commit-id: fe571aaadc

maven-cw-elevator-application/cw-elevator-application-common/src/main/java/cn/cloudwalk/elevator/config/FeignThreadLocalUtil.java

@@ -5,6 +5,7 @@ import cn.cloudwalk.cloud.session.extend.DefaultExtendContext;
 import cn.cloudwalk.elevator.context.CloudWalkExtendContextValue;
 import java.util.HashMap;
 import java.util.Map;
+import java.util.concurrent.Callable;
 import java.util.concurrent.ConcurrentHashMap;
 import javax.servlet.http.HttpServletRequest;
 import org.apache.commons.lang3.StringUtils;
@@ -76,4 +77,22 @@ public class FeignThreadLocalUtil {
     public static void setRequestHeader(CloudwalkCallContext context) {
         set(getDefaultRequestHeader(context));
     }
+
+    /**
+     * 在有界线程池等子线程中调用 Feign 前，必须为当前线程设置与 {@code context} 一致的请求头 ThreadLocal；
+     * 调用结束后恢复/清理，避免池化线程泄漏或串扰。
+     */
+    public static <T> T callWithContext(CloudwalkCallContext context, Callable<T> action) throws Exception {
+        Map<String, String> previous = get();
+        try {
+            setRequestHeader(context);
+            return action.call();
+        } finally {
+            if (previous != null) {
+                set(previous);
+            } else {
+                remove();
+            }
+        }
+    }
 }