[ISSUE-435][PART-A]Support receiving traceOn signal.

include/SendResult.h

@@ -37,7 +37,8 @@ class ROCKETMQCLIENT_API SendResult {
              const std::string& offsetMsgId,
              const MQMessageQueue& messageQueue,
              int64 queueOffset,
-             const std::string& regionId);
+             const std::string& regionId,
+             const bool traceOn);
 
   virtual ~SendResult();
   SendResult(const SendResult& other);
@@ -55,6 +56,8 @@ class ROCKETMQCLIENT_API SendResult {
   SendStatus getSendStatus() const;
   MQMessageQueue getMessageQueue() const;
   int64 getQueueOffset() const;
+  bool getTraceOn() const;
+
   std::string toString() const;
 
  private:
@@ -65,6 +68,7 @@ class ROCKETMQCLIENT_API SendResult {
   int64 m_queueOffset;
   std::string m_transactionId;
   std::string m_regionId;
+  bool m_traceOn;
 };
 
 }  // namespace rocketmq

src/MQClientAPIImpl.cpp

@@ -542,10 +542,12 @@ SendResult MQClientAPIImpl::processSendResponse(const string& brokerName,
   }
   if (res == 0) {
     SendMessageResponseHeader* responseHeader = (SendMessageResponseHeader*)pResponse->getCommandHeader();
+    auto extFields = pResponse->getExtFields();
+    bool traceOn = (extFields->count("TRACE_ON") && extFields->at("TRACE_ON") == "true");
     MQMessageQueue messageQueue(msg.getTopic(), brokerName, responseHeader->queueId);
     string unique_msgId = msg.getProperty(MQMessage::PROPERTY_UNIQ_CLIENT_MESSAGE_ID_KEYIDX);
     return SendResult(sendStatus, unique_msgId, responseHeader->msgId, messageQueue, responseHeader->queueOffset,
-                      responseHeader->regionId);
+                      responseHeader->regionId, traceOn);
   }
   LOG_ERROR("processSendResponse error remark:%s, error code:%d", (pResponse->getRemark()).c_str(),
             pResponse->getCode());

src/producer/SendResult.cpp

@@ -39,13 +39,15 @@ SendResult::SendResult(const SendStatus& sendStatus,
                        const std::string& offsetMsgId,
                        const MQMessageQueue& messageQueue,
                        int64 queueOffset,
-                       const string& regionId)
+                       const string& regionId,
+                       const bool traceOn)
     : m_sendStatus(sendStatus),
       m_msgId(msgId),
       m_offsetMsgId(offsetMsgId),
       m_messageQueue(messageQueue),
       m_queueOffset(queueOffset),
-      m_regionId(regionId) {}
+      m_regionId(regionId),
+      m_traceOn(traceOn) {}
 
 SendResult::SendResult(const SendResult& other) {
   m_sendStatus = other.m_sendStatus;
@@ -54,6 +56,7 @@ SendResult::SendResult(const SendResult& other) {
   m_messageQueue = other.m_messageQueue;
   m_queueOffset = other.m_queueOffset;
   m_regionId = other.m_regionId;
+  m_traceOn = other.m_traceOn;
 }
 
 SendResult& SendResult::operator=(const SendResult& other) {
@@ -64,6 +67,7 @@ SendResult& SendResult::operator=(const SendResult& other) {
     m_messageQueue = other.m_messageQueue;
     m_queueOffset = other.m_queueOffset;
     m_regionId = other.m_regionId;
+    m_traceOn = other.m_traceOn;
   }
   return *this;
 }
@@ -96,6 +100,10 @@ int64 SendResult::getQueueOffset() const {
   return m_queueOffset;
 }
 
+bool SendResult::getTraceOn() const {
+  return m_traceOn;
+}
+
 std::string SendResult::toString() const {
   stringstream ss;
   ss << "SendResult: ";
@@ -105,6 +113,8 @@ std::string SendResult::toString() const {
   ss << ",queueOffset:" << m_queueOffset;
   ss << ",transactionId:" << m_transactionId;
   ss << ",messageQueue:" << m_messageQueue.toString();
+  ss << ",regionId:" << m_regionId;
+  ss << ",traceOn:" << m_traceOn;
   return ss.str();
 }
 

src/protocol/RemotingCommand.cpp

@@ -180,6 +180,12 @@ RemotingCommand* RemotingCommand::Decode(const MemoryBlock& mem) {
   if (bodyLen > 0) {
     cmd->SetBody(pData + 4 + headLen, bodyLen);
   }
+  if (object.isMember("extFields")) {
+    Json::Value& extFields = object["extFields"];
+    for (auto& it : extFields.getMemberNames()) {
+      cmd->m_extFields[it] = extFields[it].asString();
+    }
+  }
   return cmd;
 }
 
@@ -304,6 +310,10 @@ void RemotingCommand::addExtField(const string& key, const string& value) {
   m_extFields[key] = value;
 }
 
+const unordered_map<string, string>* RemotingCommand::getExtFields() const{
+  return &m_extFields;
+}
+
 std::string RemotingCommand::ToString() const {
   std::stringstream ss;
   ss << "code:" << m_code << ",opaque:" << m_opaque << ",flag:" << m_flag << ",body.size:" << m_body.getSize()

src/protocol/RemotingCommand.h

@@ -21,6 +21,7 @@
 #include <boost/thread/thread.hpp>
 #include <memory>
 #include <sstream>
+#include <unordered_map>
 #include "CommandHeader.h"
 #include "dataBlock.h"
 
@@ -62,6 +63,7 @@ class RemotingCommand {
   const int getFlag() const;
   const int getVersion() const;
   void addExtField(const string& key, const string& value);
+  const unordered_map<string, string>* getExtFields() const;
   string getMsgBody() const;
   void setMsgBody(const string& body);
 
@@ -81,7 +83,7 @@ class RemotingCommand {
   int m_flag;
   string m_remark;
   string m_msgBody;
-  map<string, string> m_extFields;
+  unordered_map<string, string> m_extFields;
 
   MemoryBlock m_head;
   MemoryBlock m_body;