64 lines
2.6 KiB
Java
64 lines
2.6 KiB
Java
package com.example.kafkanativeserialization;
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import java.time.Duration;
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import java.util.Collections;
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import java.util.Map;
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import org.apache.kafka.clients.consumer.Consumer;
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import org.apache.kafka.clients.consumer.ConsumerConfig;
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import org.apache.kafka.clients.consumer.ConsumerRecords;
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import org.apache.kafka.common.serialization.StringSerializer;
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import org.junit.BeforeClass;
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import org.junit.ClassRule;
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import org.junit.Test;
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import org.junit.runner.RunWith;
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import org.springframework.boot.test.context.SpringBootTest;
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import org.springframework.kafka.core.DefaultKafkaConsumerFactory;
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import org.springframework.kafka.core.DefaultKafkaProducerFactory;
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import org.springframework.kafka.core.KafkaTemplate;
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import org.springframework.kafka.test.rule.EmbeddedKafkaRule;
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import org.springframework.kafka.test.utils.KafkaTestUtils;
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import org.springframework.test.context.junit4.SpringRunner;
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import static org.assertj.core.api.Assertions.assertThat;
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@SpringBootTest
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@RunWith(SpringRunner.class)
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public class KafkaNativeSerializationApplicationTests {
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private static final String INPUT_TOPIC = "topic1";
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private static final String OUTPUT_TOPIC = "topic2";
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private static final String GROUP_NAME = "nativeSerializationTest";
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@ClassRule
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public static EmbeddedKafkaRule embeddedKafka = new EmbeddedKafkaRule(1, true, OUTPUT_TOPIC);
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@BeforeClass
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public static void setup() {
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System.setProperty("spring.cloud.stream.kafka.binder.brokers", embeddedKafka.getEmbeddedKafka().getBrokersAsString());
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}
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@Test
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public void testSendReceive() {
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Map<String, Object> senderProps = KafkaTestUtils.producerProps(embeddedKafka.getEmbeddedKafka());
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senderProps.put("value.serializer", StringSerializer.class);
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DefaultKafkaProducerFactory<byte[], String> pf = new DefaultKafkaProducerFactory<>(senderProps);
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KafkaTemplate<byte[], String> template = new KafkaTemplate<>(pf, true);
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template.setDefaultTopic(INPUT_TOPIC);
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template.sendDefault("foo");
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Map<String, Object> consumerProps = KafkaTestUtils.consumerProps(GROUP_NAME, "false", embeddedKafka.getEmbeddedKafka());
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consumerProps.put(ConsumerConfig.AUTO_OFFSET_RESET_CONFIG, "earliest");
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consumerProps.put("value.deserializer", MyJsonDeserializer.class);
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DefaultKafkaConsumerFactory<byte[], Person> cf = new DefaultKafkaConsumerFactory<>(consumerProps);
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Consumer<byte[], Person> consumer = cf.createConsumer();
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consumer.subscribe(Collections.singleton(OUTPUT_TOPIC));
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ConsumerRecords<byte[], Person> records = consumer.poll(Duration.ofSeconds(5));
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consumer.commitSync();
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assertThat(records.count()).isEqualTo(1);
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assertThat(new String(records.iterator().next().value().getName())).isEqualTo("foo");
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}
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}
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