package de.juplo.kafka;
+import lombok.extern.slf4j.Slf4j;
+import org.apache.kafka.clients.consumer.Consumer;
+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.scheduling.annotation.EnableAsync;
+
+import javax.annotation.PreDestroy;
+import java.util.concurrent.ExecutionException;
@SpringBootApplication
-public class Application
+@EnableAsync
+@Slf4j
+public class Application implements ApplicationRunner
{
+ @Autowired
+ Consumer<?, ?> kafkaConsumer;
+ @Autowired
+ SimpleConsumer simpleConsumer;
+
+ @Override
+ public void run(ApplicationArguments args) throws Exception
+ {
+ log.info("Starting SimpleConsumer");
+ simpleConsumer.run();
+ }
+
+ @PreDestroy
+ public void stop() throws ExecutionException, InterruptedException
+ {
+ log.info("Signaling SimpleConsumer to quit its work");
+ kafkaConsumer.wakeup();
+
+ while (simpleConsumer.isRunning())
+ {
+ log.info("Waiting for SimpleConsumer to finish its work");
+ try
+ {
+ Thread.sleep(1000);
+ }
+ catch (InterruptedException e) {}
+ }
+ log.info("SimpleConsumer finished its work");
+ }
+
+
public static void main(String[] args)
{
SpringApplication.run(Application.class, args);