问题
I am trying to send Data to different topics based on some evaluation. I am using SPring CLoud Streams and Kafka
How can I conditionally forward to kafka topics. I need to insert SCS-kafka related code in the places where I commented specifically.
Thank you.
@EnableBinding(Sink.class)
public class SampleSink {
private final Logger logger = LoggerFactory.getLogger(this.getClass());
@Autowired
private SomeService someService;
@ServiceActivator(inputChannel = Sink.INPUT)
public void processor(Message<?> message1) {
EvaluateData evaluateData = someService.evaluateData(message1);
String Result = String.valueOf(evaluateData.getResult());
try {
if(validationResult.equalsIgnoreCase("allgood")){
//Send message1 to Topic1
}
else if (validationResult.equalsIgnoreCase("notgood")){
new SomeException("topic1");
//sent data to topic2
}
else {
throw new SomeException("topic3");
}
}
catch (SomeException e){
//something
//sent data to topic2 and 3 respectively }
}
}
回答1:
What you are trying to do is essentially a router which we already provide as an out of the box application. It is basically a router Sink which will route message based on conditions you specify via configuration. Please see more here
来源：https://stackoverflow.com/questions/53263321/spring-cloud-streams-conditional-forwarding-of-data-to-kafka-topics