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.boot.context.properties.EnableConfigurationProperties;
-import org.springframework.context.annotation.Bean;
-import org.springframework.http.converter.json.Jackson2ObjectMapperBuilder;
-import org.springframework.util.Assert;
-import java.util.concurrent.Executors;
+import javax.annotation.PreDestroy;
@SpringBootApplication
-@EnableConfigurationProperties(ApplicationProperties.class)
-public class Application
+@Slf4j
+public class Application implements ApplicationRunner
{
@Autowired
- ApplicationProperties properties;
+ EndlessConsumer endlessConsumer;
- @Bean
- public EndlessConsumer consumer(PartitionStatisticsRepository repository)
+ @Override
+ public void run(ApplicationArguments args) throws Exception
{
- 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),
- repository,
- properties.getBootstrapServer(),
- properties.getGroupId(),
- properties.getClientId(),
- properties.getTopic(),
- properties.getAutoOffsetReset());
-
- consumer.start();
-
- return consumer;
+ log.info("Starting EndlessConsumer");
+ endlessConsumer.start();
}
- @Bean
- public Jackson2ObjectMapperBuilder jackson2ObjectMapperBuilder()
+ @PreDestroy
+ public void shutdown()
{
- return
- new Jackson2ObjectMapperBuilder().serializers(
- new TopicPartitionSerializer(),
- new PartitionStatisticsSerializer());
+ try
+ {
+ log.info("Stopping EndlessConsumer");
+ endlessConsumer.stop();
+ }
+ catch (IllegalStateException e)
+ {
+ log.info("Was already stopped: {}", e.toString());
+ }
+ catch (Exception e)
+ {
+ log.error("Unexpected exception while stopping EndlessConsumer: {}", e);
+ }
}