package de.juplo.kafka;
import lombok.extern.slf4j.Slf4j;
-import org.springframework.beans.factory.annotation.Autowired;
-import org.springframework.boot.ApplicationArguments;
-import org.springframework.boot.ApplicationRunner;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.kafka.annotation.KafkaListener;
-import javax.annotation.PreDestroy;
-import java.util.List;
-import java.util.concurrent.ExecutorService;
-import java.util.concurrent.TimeUnit;
-
-
+// tag::supersimple[]
@SpringBootApplication
@Slf4j
-public class Application implements ApplicationRunner
+public class Application
{
- @Autowired
- EndlessConsumer endlessConsumer;
- @Autowired
- ExecutorService executor;
-
-
- @Override
- public void run(ApplicationArguments args) throws Exception
+ @KafkaListener(id = "supersimple", topics = "test")
+ public void recieve(String message)
{
- log.info("Starting EndlessConsumer");
- endlessConsumer.start();
+ log.info("Recieved message: {}", message);
}
- @PreDestroy
- public void stopExecutor()
- {
- try
- {
- log.info("Shutting down the ExecutorService.");
- executor.shutdown();
- log.info("Waiting 5 seconds for the ExecutorService to terminate...");
- executor.awaitTermination(5, TimeUnit.SECONDS);
- }
- catch (InterruptedException e)
- {
- log.error("Exception while waiting for the termination of the ExecutorService: {}", e.toString());
- }
- finally
- {
- if (!executor.isShutdown())
- {
- log.warn("Forcing shutdown of ExecutorService!");
- executor
- .shutdownNow()
- .forEach(runnable -> log.warn("Unfinished task: {}", runnable.getClass().getSimpleName()));
- }
- log.info("Shutdow of ExecutorService finished");
- }
- }
-
-
public static void main(String[] args)
{
SpringApplication.run(Application.class, args);
}
}
+// end::supersimple[]