rocketmq-client-go

git仓库地址

https://github.com/apache/rocketmq-client-go

ps: 基于apache2.0开源协议。

关注几个配置项:

topic

groupName

tag

按需配置即可。

关于producer和consumer的入口启动略去，客户端层面，关于producer和consumer可以按照自己业务特点，进行配置。

以下为simple样例。

生产者

package producer

import (
    "context"
    "fmt"
    "github.com/apache/rocketmq-client-go/v2"
    "github.com/apache/rocketmq-client-go/v2/primitive"
    "github.com/apache/rocketmq-client-go/v2/producer"
    "os"
)

func ProTagSimple() {
    p, _ := rocketmq.NewProducer(
        producer.WithNsResolver(primitive.NewPassthroughResolver([]string{"127.0.0.1:9876"})),
        producer.WithRetry(2),
        producer.WithGroupName("testGroup"),
    )
    err := p.Start()
    if err != nil {
        fmt.Printf("start producer error: %s", err.Error())
        os.Exit(1)
    }
    tags := []string{"TagA", "TagB", "TagC"}
    for i := 0; i < 3; i++ {
        tag := tags[i%3]
        msg := primitive.NewMessage("test",
            []byte("Hello RocketMQ Go Client!"))
        msg.WithTag(tag)

        res, err := p.SendSync(context.Background(), msg)
        if err != nil {
            fmt.Printf("send message error: %s\n", err)
        } else {
            fmt.Printf("send message success: result=%s\n", res.String())
        }
    }
    err = p.Shutdown()
    if err != nil {
        fmt.Printf("shutdown producer error: %s", err.Error())
    }
}

消费者

package consumer

import (
    "context"
    "fmt"
    "github.com/apache/rocketmq-client-go/v2"
    "github.com/apache/rocketmq-client-go/v2/consumer"
    "github.com/apache/rocketmq-client-go/v2/primitive"
    "os"
    "time"
)

func ConTagSimple() {
    c, _ := rocketmq.NewPushConsumer(
        consumer.WithNsResolver(primitive.NewPassthroughResolver([]string{"127.0.0.1:9876"})),
        consumer.WithGroupName("testGroup"),
    )
    selector := consumer.MessageSelector{
        Type:       consumer.TAG,
        Expression: "TagA || TagC",
    }
    err := c.Subscribe("test", selector, func(ctx context.Context,
        msgs ...*primitive.MessageExt) (consumer.ConsumeResult, error) {
        fmt.Printf("subscribe callback: %v \n", msgs)
        return consumer.ConsumeSuccess, nil
    })
    if err != nil {
        fmt.Println(err.Error())
    }
    err = c.Start()
    if err != nil {
        fmt.Println(err.Error())
        os.Exit(-1)
    }
    time.Sleep(time.Minute * 5)
    err = c.Shutdown()
    if err != nil {
        fmt.Printf("shutdown Consumer error: %s", err.Error())
    }
}

 

日志小记

生产者

send message success: result=SendResult [sendStatus=0, msgIds=C0A801C289A0000000004a8d40380001, offsetMsgId=C0A801C200002A9F0000000000000254, queueOffset=0, messageQueue=MessageQueue [topic=test, brokerName=ZpfMac, queueId=1]]

消费者

subscribe callback: [[Message=[topic=test, body=Hello RocketMQ Go Client!, Flag=0, properties=map[CLUSTER:DefaultCluster CONSUME_START_TIME:1686799902366 MAX_OFFSET:1 MIN_OFFSET:0 TAGS:TagA UNIQ_KEY:C0A801C289A0000000004a8d40380001], TransactionId=], MsgId=C0A801C289A0000000004a8d40380001, OffsetMsgId=C0A801C200002A9F0000000000000254,QueueId=1, StoreSize=194, QueueOffset=0, SysFlag=0, BornTimestamp=1686799571482, BornHost=127.0.0.1:64649, StoreTimestamp=1686799571489, StoreHost=192.168.1.194:10911, CommitLogOffset=596, BodyCRC=729402843, ReconsumeTimes=0, PreparedTransactionOffset=0]]