+package de.juplo.kafka;
+
+import org.apache.kafka.clients.consumer.Consumer;
+import org.apache.kafka.clients.consumer.KafkaConsumer;
+import org.apache.kafka.common.serialization.StringDeserializer;
+import org.springframework.boot.context.properties.EnableConfigurationProperties;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+import java.util.Properties;
+
+
+@Configuration
+@EnableConfigurationProperties({ ApplicationProperties.class })
+public class ApplicationConfiguration
+{
+ @Bean
+ public SimpleConsumer simpleConsumer(
+ Consumer<String, String> kafkaConsumer,
+ ApplicationProperties applicationProperties)
+ {
+ return
+ new SimpleConsumer(
+ applicationProperties.getClientId(),
+ applicationProperties.getTopic(),
+ kafkaConsumer);
+ }
+
+ @Bean
+ public Consumer<String, String> kafkaConsumer(ApplicationProperties properties)
+ {
+ Properties props = new Properties();
+ props.put("bootstrap.servers", properties.getBootstrapServers());
+ props.put("group.id", properties.getGroupId()); // ID für die Offset-Commits
+ props.put("client.id", properties.getClientId()); // Nur zur Wiedererkennung
+ props.put("auto.offset.reset", properties.getAutoOffsetReset());
+ props.put("partition.assignment.strategy", "org.apache.kafka.clients.consumer.CooperativeStickyAssignor");
+ props.put("key.deserializer", StringDeserializer.class.getName());
+ props.put("value.deserializer", StringDeserializer.class.getName());
+
+ return new KafkaConsumer<>(props);
+ }
+}