diff --git a/pulsar/producer_partition.go b/pulsar/producer_partition.go
index 82123f988a..2beb36144a 100755
--- a/pulsar/producer_partition.go
+++ b/pulsar/producer_partition.go
@@ -1419,21 +1419,37 @@ func (p *partitionProducer) Close() {
 	<-cp.doneCh
 }
 
+//nolint:all
 type sendRequest struct {
-	ctx              context.Context
-	msg              *ProducerMessage
-	callback         func(MessageID, *ProducerMessage, error)
-	callbackOnce     *sync.Once
-	publishTime      time.Time
-	flushImmediately bool
-	blockCh          chan struct{}
-	closeBlockChOnce *sync.Once
-	totalChunks      int
-	chunkID          int
-	uuid             string
-	chunkRecorder    *chunkRecorder
-	transaction      *transaction
-	reservedMem      int64
+	ctx                 context.Context
+	msg                 *ProducerMessage
+	callback            func(MessageID, *ProducerMessage, error)
+	callbackOnce        *sync.Once
+	publishTime         time.Time
+	flushImmediately    bool
+	blockCh             chan struct{}
+	closeBlockChOnce    *sync.Once
+	totalChunks         int
+	chunkID             int
+	uuid                string
+	chunkRecorder       *chunkRecorder
+	transaction         *transaction
+	reservedMem         int64
+	producer            *partitionProducer
+	memLimit            internal.MemoryLimitController
+	semaphore           internal.Semaphore
+	reservedSemaphore   int
+	sendAsBatch         bool
+	schema              Schema
+	schemaVersion       []byte
+	uncompressedPayload []byte
+	uncompressedSize    int64
+	compressedPayload   []byte
+	compressedSize      int
+	payloadChunkSize    int
+	mm                  *pb.MessageMetadata
+	deliverAt           time.Time
+	maxMessageSize      int32
 }
 
 // stopBlock can be invoked multiple times safety
@@ -1443,6 +1459,55 @@ func (sr *sendRequest) stopBlock() {
 	})
 }
 
+//nolint:all
+func (sr *sendRequest) done(msgID MessageID, err error) {
+	if err == nil {
+		sr.producer.metrics.PublishLatency.Observe(float64(time.Now().UnixNano()-sr.publishTime.UnixNano()) / 1.0e9)
+		sr.producer.metrics.MessagesPublished.Inc()
+		sr.producer.metrics.BytesPublished.Add(float64(sr.reservedMem))
+	}
+
+	if err != nil {
+		sr.producer.log.WithError(err).
+			WithField("size", sr.reservedMem).
+			WithField("properties", sr.msg.Properties)
+	}
+
+	if err == errSendTimeout {
+		sr.producer.metrics.PublishErrorsTimeout.Inc()
+	}
+
+	if err == errMessageTooLarge {
+		sr.producer.metrics.PublishErrorsMsgTooLarge.Inc()
+	}
+
+	if sr.semaphore != nil {
+		for i := 0; i < sr.reservedSemaphore; i++ {
+			sr.semaphore.Release()
+		}
+		sr.producer.metrics.MessagesPending.Sub(float64(sr.reservedSemaphore))
+	}
+
+	if sr.memLimit != nil {
+		sr.memLimit.ReleaseMemory(sr.reservedMem)
+		sr.producer.metrics.BytesPending.Sub(float64(sr.reservedMem))
+	}
+
+	if sr.totalChunks <= 1 || sr.chunkID == sr.totalChunks-1 {
+		sr.callbackOnce.Do(func() {
+			runCallback(sr.callback, msgID, sr.msg, err)
+		})
+
+		if sr.transaction != nil {
+			sr.transaction.endSendOrAckOp(err)
+		}
+
+		if sr.producer.options.Interceptors != nil && err == nil {
+			sr.producer.options.Interceptors.OnSendAcknowledgement(sr.producer, sr.msg, msgID)
+		}
+	}
+}
+
 type closeProducer struct {
 	doneCh chan struct{}
 }