command: sleep infinity
producer:
- image: juplo/endless-producer:1.0-SNAPSHOT
+ image: juplo/rest-producer:1.0-SNAPSHOT
ports:
- 8080:8080
environment:
producer.bootstrap-server: kafka:9092
producer.client-id: producer
producer.topic: test
- producer.throttle-ms: 200
+
+ peter:
+ image: juplo/rest-client:1.0-SNAPSHOT
+ ports:
+ - 8081:8080
+ environment:
+ server.port: 8080
+ rest-client.baseUrl: http://producer:8080
+ rest-client.username: peter
+ rest-client.throttle-ms: 1000
+
+ klaus:
+ image: juplo/rest-client:1.0-SNAPSHOT
+ ports:
+ - 8082:8080
+ environment:
+ server.port: 8080
+ rest-client.baseUrl: http://producer:8080
+ rest-client.username: klaus
+ rest-client.throttle-ms: 1100
+
+ beate:
+ image: juplo/rest-client:1.0-SNAPSHOT
+ ports:
+ - 8083:8080
+ environment:
+ server.port: 8080
+ rest-client.baseUrl: http://producer:8080
+ rest-client.username: beate
+ rest-client.throttle-ms: 900
+
+ franz:
+ image: juplo/rest-client:1.0-SNAPSHOT
+ ports:
+ - 8084:8080
+ environment:
+ server.port: 8080
+ rest-client.baseUrl: http://producer:8080
+ rest-client.username: franz
+ rest-client.throttle-ms: 800
+
+ uschi:
+ image: juplo/rest-client:1.0-SNAPSHOT
+ ports:
+ - 8085:8080
+ environment:
+ server.port: 8080
+ rest-client.baseUrl: http://producer:8080
+ rest-client.username: uschi
+ rest-client.throttle-ms: 1200
+
+ consumer:
+ image: juplo/counting-consumer:1.0-SNAPSHOT
+ ports:
+ - 8000:8081
+ environment:
+ consumer.bootstrap-server: kafka:9092
+ consumer.client-id: my-group
+ consumer.client-id: consumer
+ consumer.topic: test
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.MediaType;
+import org.springframework.web.bind.annotation.*;
+import org.springframework.web.context.request.async.DeferredResult;
import javax.annotation.PreDestroy;
import java.util.Properties;
@Slf4j
-public class EndlessProducer implements Runnable
+@RestController
+public class RestProducer
{
- private final ExecutorService executor;
private final String id;
private final String topic;
- private final int throttleMs;
private final KafkaProducer<String, String> producer;
- private boolean running = false;
- private long i = 0;
private long produced = 0;
- public EndlessProducer(
- ExecutorService executor,
- String bootstrapServer,
- String clientId,
- String topic,
- String acks,
- int throttleMs)
+ public RestProducer(ApplicationProperties properties)
{
- this.executor = executor;
- this.id = clientId;
- this.topic = topic;
- this.throttleMs = throttleMs;
+ this.id = properties.getClientId();
+ this.topic = properties.getTopic();
Properties props = new Properties();
- props.put("bootstrap.servers", bootstrapServer);
- props.put("client.id", clientId);
- props.put("acks", acks);
+ 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("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);
}
- @Override
- public void run()
+ @PostMapping(path = "{key}")
+ public DeferredResult<ProduceResult> send(
+ @PathVariable String key,
+ @RequestBody String value)
{
- try
- {
- for (; running; i++)
- {
- send(Long.toString(i%10), Long.toString(i));
-
- if (throttleMs > 0)
- {
- try
- {
- Thread.sleep(throttleMs);
- }
- catch (InterruptedException e)
- {
- log.warn("{} - Interrupted while throttling!", e);
- }
- }
- }
+ DeferredResult<ProduceResult> result = new DeferredResult<>();
- log.info("{} - Done", id);
- }
- catch (Exception e)
- {
- log.error("{} - Unexpected Exception:", id, e);
- }
- finally
- {
- synchronized (this)
- {
- running = false;
- log.info("{} - Stopped - produced {} messages so far", id, produced);
- }
- }
- }
-
- void send(String key, String value)
- {
final long time = System.currentTimeMillis();
final ProducerRecord<String, String> record = new ProducerRecord<>(
{
// HANDLE SUCCESS
produced++;
+ result.setResult(new ProduceSuccess(metadata.partition(), metadata.offset()));
log.debug(
"{} - Sent key={} message={} partition={}/{} timestamp={} latency={}ms",
id,
else
{
// HANDLE ERROR
+ result.setErrorResult(new ProduceFailure(e));
log.error(
"{} - ERROR key={} timestamp={} latency={}ms: {}",
id,
record.key(),
now - time
);
- }
-
- public synchronized void start()
- {
- if (running)
- throw new IllegalStateException("Producer instance " + id + " is already running!");
-
- log.info("{} - Starting - produced {} messages before", id, produced);
- running = true;
- executor.submit(this);
- }
- public synchronized void stop() throws ExecutionException, InterruptedException
- {
- if (!running)
- throw new IllegalStateException("Producer instance " + id + " is not running!");
-
- log.info("{} - Stopping...", id);
- running = false;
+ return result;
}
@PreDestroy
public void destroy() throws ExecutionException, InterruptedException
{
log.info("{} - Destroy!", id);
- try
- {
- stop();
- }
- catch (IllegalStateException e)
- {
- log.info("{} - Was already stopped", id);
- }
- finally
- {
- log.info("{} - Closing the KafkaProducer", id);
- producer.close();
- log.info("{}: Produced {} messages in total, exiting!", id, produced);
- }
+ log.info("{} - Closing the KafkaProducer", id);
+ producer.close();
+ log.info("{}: Produced {} messages in total, exiting!", id, produced);
}
}
projects / demos / kafka / training / commitdiff