fix grpc

Author: Sunny Jiao

framework/src/test/java/org/tron/core/services/DelegationServiceTest.java

@@ -31,35 +31,22 @@ public DelegationServiceTest(TronApplicationContext context) {
   }
 
   public static void testGrpc() {
-    io.grpc.ManagedChannel channel = ManagedChannelBuilder.forTarget(fullnode)
-        .usePlaintext()
-        .build();
-    try {
-      WalletBlockingStub walletStub = WalletGrpc.newBlockingStub(channel);
-      BytesMessage.Builder builder = BytesMessage.newBuilder();
-      builder.setValue(ByteString.copyFromUtf8("TLTDZBcPoJ8tZ6TTEeEqEvwYFk2wgotSfD"));
-      System.out
-          .println("getBrokerageInfo: " + walletStub.getBrokerageInfo(builder.build()).getNum());
-      System.out.println("getRewardInfo: " + walletStub.getRewardInfo(builder.build()).getNum());
-      UpdateBrokerageContract.Builder updateBrokerageContract = UpdateBrokerageContract.newBuilder();
-      updateBrokerageContract.setOwnerAddress(
-          ByteString.copyFrom(decodeFromBase58Check("TN3zfjYUmMFK3ZsHSsrdJoNRtGkQmZLBLz")))
-          .setBrokerage(10);
-      TransactionExtention transactionExtention = walletStub
-          .updateBrokerage(updateBrokerageContract.build());
-      System.out.println("UpdateBrokerage: " + transactionExtention);
-    } finally {
-      // Properly shutdown the gRPC channel to prevent resource leaks
-      channel.shutdown();
-      try {
-        if (!channel.awaitTermination(5, java.util.concurrent.TimeUnit.SECONDS)) {
-          channel.shutdownNow();
-        }
-      } catch (InterruptedException e) {
-        channel.shutdownNow();
-        Thread.currentThread().interrupt();
-      }
-    }
+    WalletBlockingStub walletStub = WalletGrpc
+        .newBlockingStub(ManagedChannelBuilder.forTarget(fullnode)
+            .usePlaintext()
+            .build());
+    BytesMessage.Builder builder = BytesMessage.newBuilder();
+    builder.setValue(ByteString.copyFromUtf8("TLTDZBcPoJ8tZ6TTEeEqEvwYFk2wgotSfD"));
+    System.out
+        .println("getBrokerageInfo: " + walletStub.getBrokerageInfo(builder.build()).getNum());
+    System.out.println("getRewardInfo: " + walletStub.getRewardInfo(builder.build()).getNum());
+    UpdateBrokerageContract.Builder updateBrokerageContract = UpdateBrokerageContract.newBuilder();
+    updateBrokerageContract.setOwnerAddress(
+        ByteString.copyFrom(decodeFromBase58Check("TN3zfjYUmMFK3ZsHSsrdJoNRtGkQmZLBLz")))
+        .setBrokerage(10);
+    TransactionExtention transactionExtention = walletStub
+        .updateBrokerage(updateBrokerageContract.build());
+    System.out.println("UpdateBrokerage: " + transactionExtention);
   }
 
   private void testPay(int cycle) {