【fix sonar】 ExecutorRouteLFU.java文件

jero-boot/jero-cloud-module/jero-cloud-xxljob/src/main/java/com/xxl/job/admin/core/route/strategy/ExecutorRouteLFU.java

@@ -17,21 +17,21 @@ import java.util.concurrent.ConcurrentMap;
  */
 public class ExecutorRouteLFU extends ExecutorRouter {
 
-    private static ConcurrentMap<Integer, HashMap<String, Integer>> jobLfuMap = new ConcurrentHashMap<Integer, HashMap<String, Integer>>();
-    private static long CACHE_VALID_TIME = 0;
+    private static ConcurrentMap<Integer, HashMap<String, Integer>> jobLfuMap = new ConcurrentHashMap<>();
+    private long cacheValidTime = 0;
 
     public String route(int jobId, List<String> addressList) {
 
         // cache clear
-        if (System.currentTimeMillis() > CACHE_VALID_TIME) {
+        if (System.currentTimeMillis() > cacheValidTime) {
             jobLfuMap.clear();
-            CACHE_VALID_TIME = System.currentTimeMillis() + 1000*60*60*24;
+            cacheValidTime = System.currentTimeMillis() + 1000*60*60*24;
         }
 
         // lfu item init
         HashMap<String, Integer> lfuItemMap = jobLfuMap.get(jobId);     // Key排序可以用TreeMap+构造入参Compare；Value排序暂时只能通过ArrayList；
         if (lfuItemMap == null) {
-            lfuItemMap = new HashMap<String, Integer>();
+            lfuItemMap = new HashMap<>();
             jobLfuMap.putIfAbsent(jobId, lfuItemMap);   // 避免重复覆盖
         }
 
@@ -48,23 +48,24 @@ public class ExecutorRouteLFU extends ExecutorRouter {
                 delKeys.add(existKey);
             }
         }
-        if (delKeys.size() > 0) {
+        if (!delKeys.isEmpty()) {
             for (String delKey: delKeys) {
                 lfuItemMap.remove(delKey);
             }
         }
 
         // load least userd count address
-        List<Map.Entry<String, Integer>> lfuItemList = new ArrayList<Map.Entry<String, Integer>>(lfuItemMap.entrySet());
-        Collections.sort(lfuItemList, new Comparator<Map.Entry<String, Integer>>() {
+        List<Map.Entry<String, Integer>> lfuItemList = new ArrayList<>(lfuItemMap.entrySet());
+       /* Collections.sort(lfuItemList, new Comparator<Map.Entry<String, Integer>>() {
             @Override
             public int compare(Map.Entry<String, Integer> o1, Map.Entry<String, Integer> o2) {
                 return o1.getValue().compareTo(o2.getValue());
             }
-        });
+        });*/
+        Collections.sort(lfuItemList, (o1,o2)-> o1.getValue().compareTo(o2.getValue()));
 
         Map.Entry<String, Integer> addressItem = lfuItemList.get(0);
-        String minAddress = addressItem.getKey();
+//        String minAddress = addressItem.getKey();
         addressItem.setValue(addressItem.getValue() + 1);
 
         return addressItem.getKey();
@@ -73,7 +74,7 @@ public class ExecutorRouteLFU extends ExecutorRouter {
     @Override
     public ReturnT<String> route(TriggerParam triggerParam, List<String> addressList) {
         String address = route(triggerParam.getJobId(), addressList);
-        return new ReturnT<String>(address);
+        return new ReturnT<>(address);
     }
 
 }