37 lines
1.6 KiB
Java
37 lines
1.6 KiB
Java
package com.barrelsofdata.springexamples.producer;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import org.springframework.beans.factory.annotation.Autowired;
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import org.springframework.beans.factory.annotation.Value;
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import org.springframework.kafka.KafkaException;
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import org.springframework.kafka.core.KafkaTemplate;
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import org.springframework.kafka.support.SendResult;
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import org.springframework.stereotype.Component;
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import org.springframework.util.concurrent.ListenableFuture;
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import org.springframework.util.concurrent.ListenableFutureCallback;
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@Component
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public class KafkaImpl implements Kafka {
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private static final Logger logger = LoggerFactory.getLogger(Kafka.class);
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@Autowired private KafkaTemplate<String, String> kafkaTemplate;
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@Value("${spring.kafka.producer.topic}")
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private String topic;
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public void publish(String payload) throws KafkaException {
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ListenableFuture<SendResult<String, String>> future = kafkaTemplate.send(topic, payload); // Blocks call if kafka broker isn't available/responding
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future.addCallback(new ListenableFutureCallback<SendResult<String, String>>() {
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@Override
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public void onSuccess(SendResult<String, String> result) {
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logger.info("Message published to Kafka partition {} with offset {}", result.getRecordMetadata().partition(), result.getRecordMetadata().offset());
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}
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@Override
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public void onFailure(Throwable ex) {
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logger.error("Unable to publish message {}", payload, ex);
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}
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});
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}
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}
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