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.boot.context.properties.EnableConfigurationProperties;
import org.springframework.context.annotation.Bean;
-import org.springframework.util.Assert;
+import org.springframework.kafka.core.ConsumerFactory;
-import java.util.concurrent.Executors;
+import javax.annotation.PreDestroy;
+import java.util.concurrent.ExecutionException;
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.Future;
@SpringBootApplication
-@EnableConfigurationProperties(ApplicationProperties.class)
-public class Application
+@Slf4j
+public class Application implements ApplicationRunner
{
@Autowired
- ApplicationProperties properties;
+ ExecutorService executorService;
+ @Autowired
+ Consumer<?, ?> consumer;
+ @Autowired
+ SimpleConsumer simpleConsumer;
+
+ Future<?> consumerJob;
+ @Override
+ public void run(ApplicationArguments args) throws Exception
+ {
+ log.info("Starting SimpleConsumer");
+ consumerJob = executorService.submit(simpleConsumer);
+ }
- @Bean
- public EndlessConsumer consumer()
+ @PreDestroy
+ public void shutdown() throws ExecutionException, InterruptedException
{
- Assert.hasText(properties.getBootstrapServer(), "consumer.bootstrap-server must be set");
- Assert.hasText(properties.getGroupId(), "consumer.group-id must be set");
- Assert.hasText(properties.getClientId(), "consumer.client-id must be set");
- Assert.hasText(properties.getTopic(), "consumer.topic must be set");
-
- EndlessConsumer consumer =
- new EndlessConsumer(
- Executors.newFixedThreadPool(1),
- properties.getBootstrapServer(),
- properties.getGroupId(),
- properties.getClientId(),
- properties.getTopic(),
- properties.getAutoOffsetReset());
-
- consumer.start();
-
- return consumer;
+ log.info("Signaling SimpleConsumer to quit its work");
+ consumer.wakeup();
+ log.info("Waiting for SimpleConsumer to finish its work");
+ consumerJob.get();
+ log.info("SimpleConsumer finished its work");
}
+
public static void main(String[] args)
{
SpringApplication.run(Application.class, args);