package de.juplo.kafka.wordcount.counter;
-import com.fasterxml.jackson.core.JsonProcessingException;
-import com.fasterxml.jackson.databind.ObjectMapper;
-import lombok.RequiredArgsConstructor;
-import lombok.Value;
+import de.juplo.kafka.wordcount.splitter.TestInputUser;
+import de.juplo.kafka.wordcount.splitter.TestInputWord;
+import de.juplo.kafka.wordcount.top10.TestOutputWord;
+import de.juplo.kafka.wordcount.top10.TestOutputWordCounter;
import lombok.extern.slf4j.Slf4j;
-import org.apache.kafka.clients.consumer.ConsumerRecord;
-import org.junit.jupiter.api.BeforeEach;
+import org.apache.kafka.streams.state.KeyValueBytesStoreSupplier;
+import org.apache.kafka.streams.state.Stores;
+import org.junit.jupiter.api.BeforeAll;
+import org.junit.jupiter.api.DisplayName;
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.counter.CounterApplicationIT.*;
-import static org.assertj.core.api.Assertions.assertThat;
-import static org.awaitility.Awaitility.*;
+import static de.juplo.kafka.wordcount.counter.CounterApplicationIT.TOPIC_IN;
+import static de.juplo.kafka.wordcount.counter.CounterApplicationIT.TOPIC_OUT;
+import static de.juplo.kafka.wordcount.counter.CounterStreamProcessor.STORE_NAME;
+import static org.awaitility.Awaitility.await;
@SpringBootTest(
properties = {
- "spring.kafka.bootstrap-servers=${spring.embedded.kafka.brokers}",
+ "spring.main.allow-bean-definition-overriding=true",
+ "spring.kafka.producer.key-serializer=org.springframework.kafka.support.serializer.JsonSerializer",
+ "spring.kafka.producer.value-serializer=org.springframework.kafka.support.serializer.JsonSerializer",
+ "spring.kafka.producer.properties.spring.json.add.type.headers=false",
+ "spring.kafka.consumer.auto-offset-reset=earliest",
+ "spring.kafka.consumer.key-deserializer=org.springframework.kafka.support.serializer.JsonDeserializer",
+ "spring.kafka.consumer.value-deserializer=org.springframework.kafka.support.serializer.JsonDeserializer",
+ "spring.kafka.consumer.properties.spring.json.type.mapping=key:de.juplo.kafka.wordcount.top10.TestOutputWord,counter:de.juplo.kafka.wordcount.top10.TestOutputWordCounter",
+ "logging.level.root=WARN",
+ "logging.level.de.juplo=DEBUG",
"juplo.wordcount.counter.bootstrap-server=${spring.embedded.kafka.brokers}",
- "juplo.wordcount.counter.commit-interval=0",
- "juplo.wordcount.counter.cacheMaxBytes=0",
+ "juplo.wordcount.counter.commit-interval=100",
+ "juplo.wordcount.counter.cache-max-bytes=0",
"juplo.wordcount.counter.input-topic=" + TOPIC_IN,
"juplo.wordcount.counter.output-topic=" + TOPIC_OUT })
-@EmbeddedKafka(topics = { TOPIC_IN, TOPIC_OUT }, partitions = PARTITIONS)
+@EmbeddedKafka(topics = { TOPIC_IN, TOPIC_OUT })
@Slf4j
public class CounterApplicationIT
{
- public final static String TOPIC_IN = "in";
- public final static String TOPIC_OUT = "out";
- static final int PARTITIONS = 2;
+ public static final String TOPIC_IN = "in";
+ public static final String TOPIC_OUT = "out";
- @Autowired
- KafkaTemplate<String, String> kafkaTemplate;
- @Autowired
- ObjectMapper mapper;
@Autowired
Consumer consumer;
+ @Autowired
+ CounterStreamProcessor streamProcessor;
- @BeforeEach
- public void clear()
+ @BeforeAll
+ public static void testSendMessage(
+ @Autowired KafkaTemplate<TestInputUser, TestInputWord> kafkaTemplate)
{
- consumer.received.clear();
+ TestData
+ .getInputMessages()
+ .forEach(kv ->
+ {
+ try
+ {
+ SendResult<TestInputUser, TestInputWord> 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);
+ }
+ });
}
+ @DisplayName("Await the expected number of messages")
+ @Test
+ public void testAwaitExpectedNumberOfMessagesForUsers()
+ {
+ await("Expected number of messages")
+ .atMost(Duration.ofSeconds(5))
+ .untilAsserted(() -> consumer.enforceAssertion(
+ receivedMessages -> TestData.assertExpectedNumberOfMessagesForWord(receivedMessages)));
+ }
+ @DisplayName("Await the expected output messages")
@Test
- void testSendMessage() throws Exception
+ void testSendMessage()
{
- kafkaTemplate.send(TOPIC_IN, "peter", "Hallo");
- kafkaTemplate.send(TOPIC_IN, "klaus", "Müsch");
- kafkaTemplate.send(TOPIC_IN, "peter", "Welt");
- kafkaTemplate.send(TOPIC_IN, "klaus", "Müsch");
- kafkaTemplate.send(TOPIC_IN, "klaus", "s");
- kafkaTemplate.send(TOPIC_IN, "peter", "Boäh");
- kafkaTemplate.send(TOPIC_IN, "peter", "Welt");
- kafkaTemplate.send(TOPIC_IN, "peter", "Boäh");
- kafkaTemplate.send(TOPIC_IN, "klaus", "s");
- kafkaTemplate.send(TOPIC_IN, "peter", "Boäh");
- kafkaTemplate.send(TOPIC_IN, "klaus", "s");
-
- Message peter1 = Message.of(
- "{\"username\":\"peter\",\"word\":\"Hallo\"}",
- "1");
- Message peter2 = Message.of(
- "{\"username\":\"peter\",\"word\":\"Welt\"}",
- "1");
- Message peter3 = Message.of(
- "{\"username\":\"peter\",\"word\":\"Boäh\"}",
- "1");
- Message peter4 = Message.of(
- "{\"username\":\"peter\",\"word\":\"Welt\"}",
- "2");
- Message peter5 = Message.of(
- "{\"username\":\"peter\",\"word\":\"Boäh\"}",
- "2");
- Message peter6 = Message.of(
- "{\"username\":\"peter\",\"word\":\"Boäh\"}",
- "3");
-
- Message klaus1 = Message.of(
- "{\"username\":\"klaus\",\"word\":\"Müsch\"}",
- "1");
- Message klaus2 = Message.of(
- "{\"username\":\"klaus\",\"word\":\"Müsch\"}",
- "2");
- Message klaus3 = Message.of(
- "{\"username\":\"klaus\",\"word\":\"s\"}",
- "1");
- Message klaus4 = Message.of(
- "{\"username\":\"klaus\",\"word\":\"s\"}",
- "2");
- Message klaus5 = Message.of(
- "{\"username\":\"klaus\",\"word\":\"s\"}",
- "3");
-
- await("Expexted converted data")
+ await("Expected messages")
.atMost(Duration.ofSeconds(10))
- .untilAsserted(() ->
- {
- assertThat(consumer.received).hasSize(2);
- assertThat(consumer.received.get("klaus")).containsExactly(klaus1, klaus2, klaus3, klaus4, klaus5);
- assertThat(consumer.received.get("peter")).containsExactly(peter1, peter2, peter3, peter4, peter5, peter6);
- });
+ .untilAsserted(() -> consumer.enforceAssertion(
+ receivedMessages -> TestData.assertExpectedMessages(receivedMessages)));
+ }
+
+ @DisplayName("Await the expected final output messages")
+ @Test
+ public void testAwaitExpectedLastMessagesForUsers()
+ {
+ await("Expected final output messages")
+ .atMost(Duration.ofSeconds(5))
+ .untilAsserted(() -> consumer.enforceAssertion(
+ receivedMessages -> TestData.assertExpectedLastMessagesForWord(receivedMessages)));
+ }
+
+ @DisplayName("Await the expected state in the state-store")
+ @Test
+ public void testAwaitExpectedState()
+ {
+ await("Expected state")
+ .atMost(Duration.ofSeconds(5))
+ .untilAsserted(() -> TestData.assertExpectedState(streamProcessor.getStore()));
}
- @RequiredArgsConstructor
static class Consumer
{
- private final MultiValueMap<String, Message> received = new LinkedMultiValueMap<>();
- private final ObjectMapper mapper;
+ private final MultiValueMap<TestOutputWord, TestOutputWordCounter> received = new LinkedMultiValueMap<>();
@KafkaListener(groupId = "TEST", topics = TOPIC_OUT)
- public void receive(ConsumerRecord<String, String> record) throws JsonProcessingException
+ public synchronized void receive(
+ @Header(KafkaHeaders.RECEIVED_KEY) TestOutputWord word,
+ @Payload TestOutputWordCounter counter)
{
- log.debug("Received message: {}", record);
- Key key = mapper.readValue(record.key(), Key.class);
- received.add(key.getUsername(), Message.of(record.key(),record.value()));
+ log.debug("Received message: {} -> {}", word, counter);
+ received.add(word, counter);
}
- }
- @Value(staticConstructor = "of")
- static class Message
- {
- String key;
- String value;
+ synchronized void enforceAssertion(
+ java.util.function.Consumer<MultiValueMap<TestOutputWord, TestOutputWordCounter>> assertion)
+ {
+ assertion.accept(received);
+ }
}
@TestConfiguration
static class Configuration
{
@Bean
- Consumer consumer(ObjectMapper mapper)
+ Consumer consumer()
+ {
+ return new Consumer();
+ }
+
+ @Bean
+ KeyValueBytesStoreSupplier storeSupplier()
{
- return new Consumer(mapper);
+ return Stores.inMemoryKeyValueStore(STORE_NAME);
}
}
}
projects / demos / kafka / wordcount / blobdiff