juplo.de Git - demos/kafka/wordcount/blob - src/test/java/de/juplo/kafka/wordcount/counter/CounterApplicationIT.java

   1 package de.juplo.kafka.wordcount.counter;
   2
   3 import de.juplo.kafka.wordcount.splitter.TestInputWord;
   4 import de.juplo.kafka.wordcount.top10.TestOutputWord;
   5 import de.juplo.kafka.wordcount.top10.TestOutputWordCounter;
   6 import lombok.extern.slf4j.Slf4j;
   7 import org.apache.kafka.streams.state.KeyValueBytesStoreSupplier;
   8 import org.apache.kafka.streams.state.Stores;
   9 import org.junit.jupiter.api.BeforeEach;
  10 import org.junit.jupiter.api.Test;
  11 import org.springframework.beans.factory.annotation.Autowired;
  12 import org.springframework.boot.test.context.SpringBootTest;
  13 import org.springframework.boot.test.context.TestConfiguration;
  14 import org.springframework.context.annotation.Bean;
  15 import org.springframework.context.annotation.Primary;
  16 import org.springframework.kafka.annotation.KafkaListener;
  17 import org.springframework.kafka.core.KafkaTemplate;
  18 import org.springframework.kafka.support.KafkaHeaders;
  19 import org.springframework.kafka.test.context.EmbeddedKafka;
  20 import org.springframework.messaging.handler.annotation.Header;
  21 import org.springframework.messaging.handler.annotation.Payload;
  22 import org.springframework.util.LinkedMultiValueMap;
  23 import org.springframework.util.MultiValueMap;
  24
  25 import java.time.Duration;
  26
  27 import static de.juplo.kafka.wordcount.counter.CounterApplicationIT.TOPIC_IN;
  28 import static de.juplo.kafka.wordcount.counter.CounterApplicationIT.TOPIC_OUT;
  29 import static org.awaitility.Awaitility.await;
  30
  31
  32 @SpringBootTest(
  33                 properties = {
  34                                 "spring.kafka.producer.value-serializer=org.springframework.kafka.support.serializer.JsonSerializer",
  35                                 "spring.kafka.producer.properties.spring.json.add.type.headers=false",
  36                                 "spring.kafka.consumer.auto-offset-reset=earliest",
  37                                 "spring.kafka.consumer.key-deserializer=org.springframework.kafka.support.serializer.JsonDeserializer",
  38                                 "spring.kafka.consumer.value-deserializer=org.springframework.kafka.support.serializer.JsonDeserializer",
  39                                 "spring.kafka.consumer.properties.spring.json.use.type.headers=false",
  40                                 "spring.kafka.consumer.properties.spring.json.key.default.type=de.juplo.kafka.wordcount.top10.TestOutputWord",
  41                                 "spring.kafka.consumer.properties.spring.json.value.default.type=de.juplo.kafka.wordcount.top10.TestOutputWordCounter",
  42                                 "logging.level.root=WARN",
  43                                 "logging.level.de.juplo=DEBUG",
  44                                 "juplo.wordcount.counter.bootstrap-server=${spring.embedded.kafka.brokers}",
  45                                 "juplo.wordcount.counter.commit-interval=0",
  46                                 "juplo.wordcount.counter.cacheMaxBytes=0",
  47                                 "juplo.wordcount.counter.input-topic=" + TOPIC_IN,
  48                                 "juplo.wordcount.counter.output-topic=" + TOPIC_OUT })
  49 @EmbeddedKafka(topics = { TOPIC_IN, TOPIC_OUT })
  50 @Slf4j
  51 public class CounterApplicationIT
  52 {
  53         public static final String TOPIC_IN = "in";
  54         public static final String TOPIC_OUT = "out";
  55
  56         @Autowired
  57         KafkaTemplate<String, TestInputWord> kafkaTemplate;
  58         @Autowired
  59         Consumer consumer;
  60
  61
  62         @BeforeEach
  63         public void clear()
  64         {
  65                 consumer.received.clear();
  66         }
  67
  68
  69         @Test
  70         void testSendMessage()
  71         {
  72                 TestData
  73                                 .getInputMessages()
  74                                 .forEach(word -> kafkaTemplate.send(TOPIC_IN, word.getUser(), word));
  75
  76                 await("Expected messages")
  77                                 .atMost(Duration.ofSeconds(10))
  78                                 .untilAsserted(() -> TestData.assertExpectedMessages(consumer.getReceivedMessages()));
  79         }
  80
  81
  82         static class Consumer
  83         {
  84                 private final MultiValueMap<TestOutputWord, TestOutputWordCounter> received = new LinkedMultiValueMap<>();
  85
  86                 @KafkaListener(groupId = "TEST", topics = TOPIC_OUT)
  87                 public synchronized void receive(
  88                                 @Header(KafkaHeaders.RECEIVED_KEY) TestOutputWord word,
  89                                 @Payload TestOutputWordCounter counter)
  90                 {
  91                         log.debug("Received message: {} -> {}", word, counter);
  92                         received.add(word, counter);
  93                 }
  94
  95                 synchronized MultiValueMap<TestOutputWord, TestOutputWordCounter> getReceivedMessages()
  96                 {
  97                         return received;
  98                 }
  99         }
 100
 101         @TestConfiguration
 102         static class Configuration
 103         {
 104                 @Bean
 105                 Consumer consumer()
 106                 {
 107                         return new Consumer();
 108                 }
 109
 110                 @Primary
 111                 @Bean
 112                 KeyValueBytesStoreSupplier inMemoryStoreSupplier()
 113                 {
 114                         return Stores.inMemoryKeyValueStore("TEST-STORE");
 115                 }
 116         }
 117 }