Kafka producer-side encapsulation of custom messages

We know that Keywordmessage is the object that is sent and stored by Kafka. So we just need to simulate this to send a custom message.

For example, I need to record the user's id,user,age,address and access IP and access date as a message. I'll customize a message format (id-user-age-address-ip-date).

I immediately thought of myself defining a javabean. Write a userinfo class pseudo-code.

Class UserInfo () {

Id

User

Age

Address

ip

Date

ToString () {

return This.getid () + "-" +this.getuser () + "-" + "..." +this.getdate ();

}

}

Do you think that would be all right? Of course not!

Also in accordance with the Kafka message type encapsulation, here we only need to implement the Encoder class: Continue to look at the code is good;

public class KeywordMessage implements kafka.serializer.Encoder<UserInfo>{           public static final Logger LOG=LoggerFactory.getLogger(UserInfo.class);           @Override     public Message toMessage(Keyword words) {         LOG.info("start in encoding...");         return new Message(words.toString().getBytes());     } } so Keywordmessage is an object that can be sent and stored by Kafka. Let's take a look at the push of the producer,producer data to the broker, so the initiator is the business system, and the code below can send the data directly. /**配置producer必要的参数*/ Properties props = new Properties(); 必要的一些配置省略。。。 /**选择用哪个类来进行序列化，就是我们自定义的消息类*/ props.put("serializer.class", "org.kafka.message.UserInfo"); ProducerConfig config=new ProducerConfig(props); /**构造测试数据*/ UserInfo userInfo = new UserInfo (); .setId( 1 userInfo ); userInfo.setUser("xiaoming");  ... List<UserInfo> msg=new ArrayList<UserInfo>(); msg.add(userInfo); /**构造数据发送对象*/ Producer<String, UserInfo> producer=new Producer<String, UserInfo>(config);       ProducerData<String,UserInfo> data=new ProducerData<String, UserInfo>("test", msg); producer.send(data); The above is the custom encapsulated message content.

Kafka producer-side encapsulation of custom messages