package de.juplo.kafka.wordcount.splitter;
-import com.fasterxml.jackson.databind.ObjectMapper;
+import de.juplo.kafka.wordcount.counter.TestWord;
+import de.juplo.kafka.wordcount.recorder.TestRecording;
import lombok.extern.slf4j.Slf4j;
-import org.apache.kafka.clients.consumer.ConsumerRecord;
-import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.BeforeAll;
import org.junit.jupiter.api.Test;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.context.annotation.Bean;
import org.springframework.kafka.annotation.KafkaListener;
import org.springframework.kafka.core.KafkaTemplate;
+import org.springframework.kafka.support.KafkaHeaders;
+import org.springframework.kafka.support.SendResult;
import org.springframework.kafka.test.context.EmbeddedKafka;
+import org.springframework.messaging.handler.annotation.Header;
+import org.springframework.messaging.handler.annotation.Payload;
import org.springframework.util.LinkedMultiValueMap;
import org.springframework.util.MultiValueMap;
import java.time.Duration;
-import static de.juplo.kafka.wordcount.splitter.SplitterApplicationIT.*;
-import static org.assertj.core.api.Assertions.assertThat;
-import static org.awaitility.Awaitility.*;
+import static de.juplo.kafka.wordcount.splitter.SplitterApplicationIT.TOPIC_IN;
+import static de.juplo.kafka.wordcount.splitter.SplitterApplicationIT.TOPIC_OUT;
+import static org.awaitility.Awaitility.await;
@SpringBootTest(
properties = {
- "spring.kafka.bootstrap-servers=${spring.embedded.kafka.brokers}",
+ "spring.kafka.producer.value-serializer=org.springframework.kafka.support.serializer.JsonSerializer",
+ "spring.kafka.producer.properties.spring.json.add.type.headers=false",
+ "spring.kafka.consumer.auto-offset-reset=earliest",
+ "spring.kafka.consumer.value-deserializer=org.springframework.kafka.support.serializer.JsonDeserializer",
+ "spring.kafka.consumer.properties.spring.json.value.default.type=de.juplo.kafka.wordcount.counter.TestWord",
+ "spring.kafka.consumer.properties.spring.json.trusted.packages=de.juplo.kafka.wordcount.splitter",
+ "logging.level.root=WARN",
+ "logging.level.de.juplo=DEBUG",
"juplo.wordcount.splitter.bootstrap-server=${spring.embedded.kafka.brokers}",
"juplo.wordcount.splitter.input-topic=" + TOPIC_IN,
"juplo.wordcount.splitter.output-topic=" + TOPIC_OUT })
-@EmbeddedKafka(topics = { TOPIC_IN, TOPIC_OUT }, partitions = PARTITIONS)
+@EmbeddedKafka(topics = { TOPIC_IN, TOPIC_OUT })
@Slf4j
public class SplitterApplicationIT
{
public final static String TOPIC_IN = "in";
public final static String TOPIC_OUT = "out";
- static final int PARTITIONS = 2;
- @Autowired
- KafkaTemplate<String, String> kafkaTemplate;
- @Autowired
- ObjectMapper mapper;
@Autowired
Consumer consumer;
-
- @BeforeEach
- public void clear()
+ @BeforeAll
+ public static void testSendMessage(
+ @Autowired KafkaTemplate<String, TestRecording> kafkaTemplate)
{
- consumer.received.clear();
+ TestData
+ .getInputMessages()
+ .forEach(kv ->
+ {
+ try
+ {
+ SendResult<String, TestRecording> result = kafkaTemplate.send(TOPIC_IN, kv.key, kv.value).get();
+ log.info(
+ "Sent: {}={}, partition={}, offset={}",
+ result.getProducerRecord().key(),
+ result.getProducerRecord().value(),
+ result.getRecordMetadata().partition(),
+ result.getRecordMetadata().offset());
+ }
+ catch (Exception e)
+ {
+ throw new RuntimeException(e);
+ }
+ });
}
@Test
void testSendMessage() throws Exception
{
- Recording recording = new Recording();
- recording.setUser("peter");
- recording.setSentence("Hallo Welt!");
- kafkaTemplate.send(TOPIC_IN, recording.getUser(), mapper.writeValueAsString(recording));
- recording.setUser("klaus");
- recording.setSentence("Müsch gäb's auch!");
- kafkaTemplate.send(TOPIC_IN, recording.getUser(), mapper.writeValueAsString(recording));
- recording.setUser("peter");
- recording.setSentence("Boäh, echt! ß mal nä Nümmäh!");
- kafkaTemplate.send(TOPIC_IN, recording.getUser(), mapper.writeValueAsString(recording));
-
- String peter1 = mapper.writeValueAsString(Word.of("peter", "Hallo"));
- String peter2 = mapper.writeValueAsString(Word.of("peter", "Welt"));
- String peter3 = mapper.writeValueAsString(Word.of("peter", "Boäh"));
- String peter4 = mapper.writeValueAsString(Word.of("peter", "echt"));
- String peter5 = mapper.writeValueAsString(Word.of("peter", "ß"));
- String peter6 = mapper.writeValueAsString(Word.of("peter", "mal"));
- String peter7 = mapper.writeValueAsString(Word.of("peter", "nä"));
- String peter8 = mapper.writeValueAsString(Word.of("peter", "Nümmäh"));
-
- String klaus1 = mapper.writeValueAsString(Word.of("klaus","Müsch"));
- String klaus2 = mapper.writeValueAsString(Word.of("klaus","gäb"));
- String klaus3 = mapper.writeValueAsString(Word.of("klaus","s"));
- String klaus4 = mapper.writeValueAsString(Word.of("klaus","auch"));
-
await("Expexted converted data")
.atMost(Duration.ofSeconds(5))
.untilAsserted(() ->
- {
- assertThat(consumer.received).hasSize(2);
- assertThat(consumer.received.get("klaus")).containsExactly(klaus1, klaus2, klaus3, klaus4);
- assertThat(consumer.received.get("peter")).containsExactly(peter1, peter2, peter3, peter4, peter5, peter6, peter7, peter8);
- });
+ TestData.assertExpectedMessages(consumer.getReceivedMessages()));
}
static class Consumer
{
- final MultiValueMap<String, String> received = new LinkedMultiValueMap<>();
+ private final MultiValueMap<String, TestWord> received = new LinkedMultiValueMap<>();
@KafkaListener(groupId = "TEST", topics = TOPIC_OUT)
- public void receive(ConsumerRecord<String, String> record)
+ public synchronized void receive(
+ @Header(KafkaHeaders.RECEIVED_KEY) String key,
+ @Payload TestWord value)
{
- log.debug("Received message: {}", record);
- received.add(record.key(), record.value());
+ log.debug("Received message: {}={}", key, value);
+ received.add(key, value);
+ }
+
+ synchronized MultiValueMap<String, TestWord> getReceivedMessages()
+ {
+ return received;
}
}
+
@TestConfiguration
static class Configuration
{