add ABUserPartitionUtils

+package com.yoho.search.recall.common;
+
+import org.apache.commons.lang.StringUtils;
+
+public class ABUserPartitionUtils {
+
+    public static boolean isAUser(int uid) {
+        int tail = uid % 1024;
+        return tail < 512 ? true : false;
+    }
+
+    public static boolean isAUser(String udid) {
+        if (StringUtils.isBlank(udid)) {
+            return false;
+        }
+        int tail = Math.abs(udid.hashCode() % 1024);
+        return tail < 512 ? true : false;
+    }
+
+    public static boolean isAUserComplete(int uid,String udid) {
+        if(uid>0){
+            return isAUser(uid);
+        }else{
+            return isAUser(udid);
+        }
+    }
+
+}

 package com.yoho.search.service.list;
 
 import com.yoho.search.models.SearchApiResult;
+import com.yoho.search.recall.common.ABUserPartitionUtils;
 import com.yoho.search.recall.scene.SceneRecallProductListService;
 import com.yoho.search.service.base.SearchDynamicConfigService;
 import com.yoho.search.service.helper.SearchCommonHelper;
@@ -28,11 +29,6 @@ public class ProductListSwitchService {
     @Autowired
     private FuzzySceneProductListService fuzzySceneProductListService;
 
-    private boolean isAUser(int uid) {
-        int tail = uid % 1024;
-        return tail < 512 ? true : false;
-    }
-
     /**
      * 普通商品列表入口
      *
@@ -68,7 +64,7 @@ public class ProductListSwitchService {
 
         // 5个性化版本A/B 测试
         int uid = searchCommonHelper.getUid(paramMap);
-        if(uid>0 && isAUser(uid)){
+        if(ABUserPartitionUtils.isAUser(uid)){
             return defaultProductListService.productListForDefaultPersional(paramMap);
         }