fix(log): suppress spurious error logs when solidity node exits

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: 317787106

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

@@ -117,7 +117,15 @@ private void getBlock() {
         Block block = getBlockByNum(blockNum);
         blockQueue.put(block);
         blockNum = ID.incrementAndGet();
+      } catch (InterruptedException e) {
+        Thread.currentThread().interrupt();
+        logger.info("getBlock interrupted, exiting.");
+        return;
       } catch (Exception e) {
+        if (!flag) {
+          logger.info("getBlock stopped during shutdown, last block: {}.", blockNum);
+          return;
+        }
         logger.error("Failed to get block {}, reason: {}.", blockNum, e.getMessage());
         sleep(exceptionSleepTime);
       }
@@ -167,6 +175,11 @@ private Block getBlockByNum(long blockNum) {
       try {
         long time = System.currentTimeMillis();
         Block block = databaseGrpcClient.getBlock(blockNum);
+        if (block == null) {
+          logger.warn("Got null block for num: {}, retrying.", blockNum);
+          sleep(exceptionSleepTime);
+          continue;
+        }
         long num = block.getBlockHeader().getRawData().getNumber();
         if (num == blockNum) {
           logger.info("Success to get block: {}, cost: {}ms.",
@@ -194,6 +207,10 @@ private long getLastSolidityBlockNum() {
             blockNum, remoteBlockNum, System.currentTimeMillis() - time);
         return blockNum;
       } catch (Exception e) {
+        if (!flag) {
+          logger.info("getLastSolidityBlockNum stopped during shutdown.");
+          return 0;
+        }
         logger.error("Failed to get last solid blockNum: {}, reason: {}.", remoteBlockNum.get(),
             e.getMessage());
         sleep(exceptionSleepTime);
@@ -205,8 +222,8 @@ private long getLastSolidityBlockNum() {
   public void sleep(long time) {
     try {
       Thread.sleep(time);
-    } catch (Exception e1) {
-      logger.error(e1.getMessage());
+    } catch (InterruptedException e) {
+      Thread.currentThread().interrupt();
     }
   }