package de.juplo.kafka;
+import lombok.RequiredArgsConstructor;
import lombok.extern.slf4j.Slf4j;
+import org.apache.kafka.clients.producer.Producer;
import org.apache.kafka.clients.producer.KafkaProducer;
import org.apache.kafka.clients.producer.ProducerRecord;
-import org.apache.kafka.common.serialization.StringSerializer;
import org.springframework.http.HttpStatus;
import org.springframework.web.bind.annotation.*;
import org.springframework.web.context.request.async.DeferredResult;
-import javax.annotation.PreDestroy;
import java.math.BigInteger;
-import java.util.Properties;
-import java.util.concurrent.ExecutionException;
@Slf4j
-@RestController
+@RequestMapping
+@ResponseBody
+@RequiredArgsConstructor
public class RestProducer
{
private final String id;
private final String topic;
private final Integer partition;
- private final KafkaProducer<String, String> producer;
+ private final Producer<String, String> producer;
private long produced = 0;
- public RestProducer(ApplicationProperties properties)
- {
- this.id = properties.getClientId();
- this.topic = properties.getTopic();
- this.partition = properties.getPartition();
-
- Properties props = new Properties();
- props.put("bootstrap.servers", properties.getBootstrapServer());
- props.put("client.id", properties.getClientId());
- props.put("acks", properties.getAcks());
- props.put("batch.size", properties.getBatchSize());
- props.put("delivery.timeout.ms", 20000); // 20 Sekunden
- props.put("request.timeout.ms", 10000); // 10 Sekunden
- props.put("linger.ms", properties.getLingerMs());
- props.put("compression.type", properties.getCompressionType());
- props.put("key.serializer", StringSerializer.class.getName());
- props.put("value.serializer", StringSerializer.class.getName());
-
- this.producer = new KafkaProducer<>(props);
- }
-
@PostMapping(path = "{key}")
public DeferredResult<ProduceResult> send(
@PathVariable String key,
long now = System.currentTimeMillis();
log.trace(
- "{} - Queued #{} key={} latency={}ms",
+ "{} - Queued message with key={} latency={}ms",
id,
- value,
record.key(),
now - time
);
{
return new ErrorResponse(e.getMessage(), HttpStatus.BAD_REQUEST.value());
}
-
- @PreDestroy
- public void destroy() throws ExecutionException, InterruptedException
- {
- log.info("{} - Destroy!", id);
- log.info("{} - Closing the KafkaProducer", id);
- producer.close();
- log.info("{}: Produced {} messages in total, exiting!", id, produced);
- }
}