eolivelli commented on a change in pull request #1286: WIP - Implement directly 
ChannelOutboundHandlerAdapter in BookieProtoEncoding#ResponseEncoder
URL: https://github.com/apache/bookkeeper/pull/1286#discussion_r176586775
 
 

 ##########
 File path: 
bookkeeper-server/src/main/java/org/apache/bookkeeper/proto/BookieProtoEncoding.java
 ##########
 @@ -452,20 +454,24 @@ protected void decode(ChannelHandlerContext ctx, Object 
msg, List<Object> out) t
         }
 
         @Override
-        protected void encode(ChannelHandlerContext ctx, Object msg, 
List<Object> out)
-                throws Exception {
+        public void write(ChannelHandlerContext ctx, Object msg, 
ChannelPromise promise) throws Exception {
             if (LOG.isTraceEnabled()) {
                 LOG.trace("Encode response {} to channel {}.", msg, 
ctx.channel());
             }
             if (msg instanceof BookkeeperProtocol.Response) {
-                out.add(repV3.encode(msg, ctx.alloc()));
+                ctx.write(repV3.encode(msg, ctx.alloc()), promise);
             } else if (msg instanceof BookieProtocol.Response) {
-                out.add(repPreV3.encode(msg, ctx.alloc()));
+                ctx.write(repPreV3.encode(msg, ctx.alloc()), promise);
             } else {
                 LOG.error("Invalid response to encode to {}: {}", 
ctx.channel(), msg.getClass().getName());
-                out.add(msg);
+                ctx.write(msg, promise);
             }
         }
+
+        @Override
+        public void exceptionCaught(ChannelHandlerContext ctx, Throwable 
cause) throws Exception {
+            LOG.error("Generic error while encoding response", cause);
+        }
 
 Review comment:
   Will drop

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