Merge Request for #4808: TYPO in C++ client producer method for proce…

…ssing failure case, and add corresponding unit test case. (#4873)

Definitely, this is a typo. This method is dealing with the Failed Message with the GIVEN result, but not a CERTAIN result.

Contribution Checklist
#4808 : TYPO in C++ client producer method for processing failure case
Add c++ client producer failure message unit test case.

UT passed:

BatchMessageTest
(cherry picked from commit b90b4ea)

pulsar-client-cpp/include/pulsar/Producer.h

@@ -147,6 +147,9 @@ class PULSAR_PUBLIC Producer {
     friend class PulsarWrapper;
 
     ProducerImplBasePtr impl_;
+
+    // For unit test case BatchMessageTest::producerFailureResult only
+    void producerFailMessages(Result result);
 };
 }  // namespace pulsar
 

pulsar-client-cpp/lib/Producer.cc

@@ -97,4 +97,11 @@ void Producer::flushAsync(FlushCallback callback) {
 
     impl_->flushAsync(callback);
 }
+
+void Producer::producerFailMessages(Result result) {
+    if (impl_) {
+        ProducerImpl* producerImpl = static_cast<ProducerImpl*>(impl_.get());
+        producerImpl->failPendingMessages(result);
+    }
+}
 }  // namespace pulsar

pulsar-client-cpp/lib/ProducerImpl.cc

@@ -256,7 +256,7 @@ void ProducerImpl::failPendingMessages(Result result) {
     }
 
     // this function can handle null pointer
-    BatchMessageContainer::batchMessageCallBack(ResultTimeout, messageContainerListPtr, NULL);
+    BatchMessageContainer::batchMessageCallBack(result, messageContainerListPtr, NULL);
 }
 
 void ProducerImpl::resendMessages(ClientConnectionPtr cnx) {

pulsar-client-cpp/lib/ProducerImpl.h

@@ -43,6 +43,8 @@ typedef std::shared_ptr<MessageCrypto> MessageCryptoPtr;
 
 class PulsarFriend;
 
+class Producer;
+
 struct OpSendMsg {
     Message msg_;
     SendCallback sendCallback_;
@@ -110,6 +112,8 @@ class ProducerImpl : public HandlerBase,
 
     friend class PulsarFriend;
 
+    friend class Producer;
+
     friend class BatchMessageContainer;
 
     virtual void connectionOpened(const ClientConnectionPtr& connection);

pulsar-client-cpp/tests/BatchMessageTest.cc

@@ -30,6 +30,8 @@
 #include <thread>
 #include "LogUtils.h"
 #include "PulsarFriend.h"
+#include <unistd.h>
+#include <functional>
 #include "ConsumerTest.h"
 #include "HttpHelper.h"
 DECLARE_LOG_OBJECT();
@@ -55,6 +57,8 @@ static void sendCallBack(Result r, const Message& msg) {
     LOG_DEBUG("Received publish acknowledgement for " << msg.getDataAsString());
 }
 
+static void sendFailCallBack(Result r, Result expect_result) { EXPECT_EQ(r, expect_result); }
+
 static int globalPublishCountSuccess = 0;
 static int globalPublishCountQueueFull = 0;
 
@@ -914,3 +918,33 @@ TEST(BatchMessageTest, testPartitionedTopics) {
     // Number of messages consumed
     ASSERT_EQ(i, numOfMessages - globalPublishCountQueueFull);
 }
+
+TEST(BatchMessageTest, producerFailureResult) {
+    std::string testName = std::to_string(epochTime) + "testCumulativeAck";
+
+    ClientConfiguration clientConfig;
+    clientConfig.setStatsIntervalInSeconds(100);
+
+    Client client(lookupUrl, clientConfig);
+    std::string topicName = "persistent://public/default/" + testName;
+    std::string subName = "subscription-name";
+    Producer producer;
+
+    int batchSize = 100;
+    int numOfMessages = 10000;
+    ProducerConfiguration conf;
+
+    conf.setCompressionType(CompressionZLib);
+    conf.setBatchingMaxMessages(batchSize);
+    conf.setBatchingEnabled(true);
+    conf.setBatchingMaxPublishDelayMs(50000);
+    conf.setBlockIfQueueFull(false);
+    conf.setMaxPendingMessages(10);
+
+    Result res = Result::ResultBrokerMetadataError;
+
+    client.createProducer(topicName, conf, producer);
+    Message msg = MessageBuilder().setContent("test").build();
+    producer.sendAsync(msg, std::bind(&sendFailCallBack, std::placeholders::_1, res));
+    PulsarFriend::producerFailMessages(producer, res);
+}

pulsar-client-cpp/tests/PulsarFriend.h

@@ -56,6 +56,10 @@ class PulsarFriend {
         return *producerImpl;
     }
 
+    static void producerFailMessages(Producer producer, Result result) {
+        producer.producerFailMessages(result);
+    }
+
     static ConsumerImpl& getConsumerImpl(Consumer consumer) {
         ConsumerImpl* consumerImpl = static_cast<ConsumerImpl*>(consumer.impl_.get());
         return *consumerImpl;