kafka msg data conversion

test/data-conversion/kafka-conversation.go

@@ -17,6 +17,7 @@ package data_conversion
 import (
 	"fmt"
 	"github.com/Shopify/sarama"
+	"sync"
 )
 
 var (
@@ -27,6 +28,7 @@ var (
 
 var consumer sarama.Consumer
 var producer sarama.SyncProducer
+var wg sync.WaitGroup
 
 func init() {
 
@@ -71,15 +73,23 @@ func GetMessage() {
 		fmt.Printf("fail to get list of partition:err%v\n", err)
 	}
 	fmt.Println(partitionList)
-	for partition := range partitionList { // iterate over all partitions
+	for partition := range partitionList {
-		// Create a corresponding partition consumer for each partition
 		pc, err := consumer.ConsumePartition(topic, int32(partition), sarama.OffsetNewest)
 		if err != nil {
-			fmt.Printf("failed to start consumer for partition %d,err:%v\n", partition, err)
+			panic(err)
 		}
-		// Asynchronously consume information from each partition
+
+		defer pc.AsyncClose()
+
+		wg.Add(1)
+
+		go func(sarama.PartitionConsumer) {
+			defer wg.Done()
 			for msg := range pc.Messages() {
-			fmt.Printf("Partition:%d Offset:%d Key:%v Value:%v", msg.Partition, msg.Offset, msg.Key, msg.Value)
+				fmt.Printf("Partition:%d, Offset:%d, Key:%s, Value:%s\n", msg.Partition, msg.Offset, string(msg.Key), string(msg.Value))
 			}
+		}(pc)
+		wg.Wait()
+		consumer.Close()
 	}
 }