shibd commented on code in PR #308:
URL: https://github.com/apache/pulsar-client-cpp/pull/308#discussion_r1312803001


##########
lib/BatchMessageContainerBase.cc:
##########
@@ -70,45 +60,18 @@ Result 
BatchMessageContainerBase::createOpSendMsgHelper(OpSendMsg& opSendMsg,
         SharedBuffer encryptedPayload;
         if (!msgCrypto->encrypt(producerConfig_.getEncryptionKeys(), 
producerConfig_.getCryptoKeyReader(),
                                 impl->metadata, impl->payload, 
encryptedPayload)) {
-            return ResultCryptoError;
+            return OpSendMsg::create(ResultCryptoError, 
std::move(sendCallback));
         }
         impl->payload = encryptedPayload;
     }
 
     if (impl->payload.readableBytes() > ClientConnection::getMaxMessageSize()) 
{
-        return ResultMessageTooBig;
+        return OpSendMsg::create(ResultMessageTooBig, std::move(sendCallback));
     }
 
-    opSendMsg.metadata_ = impl->metadata;
-    opSendMsg.payload_ = impl->payload;
-    opSendMsg.sequenceId_ = impl->metadata.sequence_id();
-    opSendMsg.producerId_ = producerId_;
-    opSendMsg.timeout_ = TimeUtils::now() + 
milliseconds(producerConfig_.getSendTimeout());
-
-    return ResultOk;
-}
-
-void BatchMessageContainerBase::processAndClear(
-    std::function<void(Result, const OpSendMsg&)> opSendMsgCallback, 
FlushCallback flushCallback) {
-    if (isEmpty()) {
-        if (flushCallback) {
-            // do nothing, flushCallback complete until the lastOpSend complete
-        }
-    } else {
-        const auto numBatches = getNumBatches();
-        if (numBatches == 1) {
-            OpSendMsg opSendMsg;
-            Result result = createOpSendMsg(opSendMsg, flushCallback);
-            opSendMsgCallback(result, opSendMsg);
-        } else if (numBatches > 1) {
-            std::vector<OpSendMsg> opSendMsgs;
-            std::vector<Result> results = createOpSendMsgs(opSendMsgs, 
flushCallback);
-            for (size_t i = 0; i < results.size(); i++) {
-                opSendMsgCallback(results[i], opSendMsgs[i]);
-            }
-        }  // else numBatches is 0, do nothing
-    }
-    clear();
+    return OpSendMsg::create(impl->metadata, batch.messagesCount(), 
batch.messagesSize(),
+                             producerConfig_.getSendTimeout(), 
batch.createSendCallback(flushCallback),

Review Comment:
   Can use `std::move(sendCallback)` to replace 
`batch.createSendCallback(flushCallback)`?



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