[zookeeper] branch branch-3.6 updated: ZOOKEEPER-4514: ClientCnxnSocketNetty throwing NPE

[arshad]

This is an automated email from the ASF dual-hosted git repository.

arshad pushed a commit to branch branch-3.6
in repository https://gitbox.apache.org/repos/asf/zookeeper.git


The following commit(s) were added to refs/heads/branch-3.6 by this push:
     new cb79fb97a ZOOKEEPER-4514: ClientCnxnSocketNetty throwing NPE
cb79fb97a is described below

commit cb79fb97a8972250190cf9f4fc1937e137cadd53
Author: Mohammad Arshad <ars...@apache.org>
AuthorDate: Fri Apr 8 22:08:55 2022 +0530

    ZOOKEEPER-4514: ClientCnxnSocketNetty throwing NPE
    
    Moved channel object null check to sendPkt method to cover all calling 
scenarios
    
    Author: Mohammad Arshad <ars...@apache.org>
    
    Reviewers: Mate Szalay-Beko <sy...@apache.org>
    
    Closes #1854 from arshadmohammad/ZOOKEEPER-4514-npe
    
    (cherry picked from commit d5876e88d6bab3cc1cee04f996b9804ff21581cb)
    Signed-off-by: Mohammad Arshad <ars...@apache.org>
---
 .../java/org/apache/zookeeper/ClientCnxnSocketNetty.java | 16 ++++++++--------
 1 file changed, 8 insertions(+), 8 deletions(-)

diff --git 
a/zookeeper-server/src/main/java/org/apache/zookeeper/ClientCnxnSocketNetty.java
 
b/zookeeper-server/src/main/java/org/apache/zookeeper/ClientCnxnSocketNetty.java
index 2686feddc..df5397855 100755
--- 
a/zookeeper-server/src/main/java/org/apache/zookeeper/ClientCnxnSocketNetty.java
+++ 
b/zookeeper-server/src/main/java/org/apache/zookeeper/ClientCnxnSocketNetty.java
@@ -304,7 +304,7 @@ public class ClientCnxnSocketNetty extends ClientCnxnSocket 
{
      * @return a ChannelFuture that will complete when the write operation
      *         succeeds or fails.
      */
-    private ChannelFuture sendPktAndFlush(Packet p) {
+    private ChannelFuture sendPktAndFlush(Packet p) throws IOException {
         return sendPkt(p, true);
     }
 
@@ -314,7 +314,7 @@ public class ClientCnxnSocketNetty extends ClientCnxnSocket 
{
      * @return a ChannelFuture that will complete when the write operation
      *         succeeds or fails.
      */
-    private ChannelFuture sendPktOnly(Packet p) {
+    private ChannelFuture sendPktOnly(Packet p) throws IOException {
         return sendPkt(p, false);
     }
 
@@ -325,7 +325,10 @@ public class ClientCnxnSocketNetty extends 
ClientCnxnSocket {
         }
     };
 
-    private ChannelFuture sendPkt(Packet p, boolean doFlush) {
+    private ChannelFuture sendPkt(Packet p, boolean doFlush) throws 
IOException {
+        if (channel == null) {
+            throw new IOException("channel has been closed");
+        }
         // Assuming the packet will be sent out successfully. Because if it 
fails,
         // the channel will close and clean up queues.
         p.createBB();
@@ -336,7 +339,7 @@ public class ClientCnxnSocketNetty extends ClientCnxnSocket 
{
         return result;
     }
 
-    private void sendPrimePacket() {
+    private void sendPrimePacket() throws IOException {
         // assuming the first packet is the priming packet.
         sendPktAndFlush(outgoingQueue.remove());
     }
@@ -344,7 +347,7 @@ public class ClientCnxnSocketNetty extends ClientCnxnSocket 
{
     /**
      * doWrite handles writing the packets from outgoingQueue via network to 
server.
      */
-    private void doWrite(Queue<Packet> pendingQueue, Packet p, ClientCnxn 
cnxn) {
+    private void doWrite(Queue<Packet> pendingQueue, Packet p, ClientCnxn 
cnxn) throws IOException {
         updateNow();
         boolean anyPacketsSent = false;
         while (true) {
@@ -374,9 +377,6 @@ public class ClientCnxnSocketNetty extends ClientCnxnSocket 
{
 
     @Override
     void sendPacket(ClientCnxn.Packet p) throws IOException {
-        if (channel == null) {
-            throw new IOException("channel has been closed");
-        }
         sendPktAndFlush(p);
     }