use flag in getBlockByNum, getLastSolidityBlockNum

Author: 317787106

framework/src/main/java/org/tron/program/SolidityNode.java

@@ -37,7 +37,7 @@ public class SolidityNode {
 
   private DatabaseGrpcClient databaseGrpcClient;
 
-  private AtomicLong ID = new AtomicLong();
+  private final AtomicLong ID = new AtomicLong();
 
   private final AtomicLong remoteBlockNum = new AtomicLong();
 
@@ -136,7 +136,7 @@ private void loopProcessBlock(Block block) {
   }
 
   private Block getBlockByNum(long blockNum) {
-    while (true) {
+    while (flag) {
       try {
         long time = System.currentTimeMillis();
         Block block = databaseGrpcClient.getBlock(blockNum);
@@ -154,10 +154,11 @@ private Block getBlockByNum(long blockNum) {
         sleep(exceptionSleepTime);
       }
     }
+    throw new RuntimeException("SolitityNode is closing.");
   }
 
   private long getLastSolidityBlockNum() {
-    while (true) {
+    while (flag) {
       try {
         long time = System.currentTimeMillis();
         long blockNum = databaseGrpcClient.getDynamicProperties().getLastSolidityBlockNum();
@@ -170,6 +171,7 @@ private long getLastSolidityBlockNum() {
         sleep(exceptionSleepTime);
       }
     }
+    throw new RuntimeException("SolitityNode is closing.");
   }
 
   public void sleep(long time) {