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.BeforeAll;
  10 import org.junit.jupiter.api.DisplayName;
  11 import org.junit.jupiter.api.Test;
  12 import org.springframework.beans.factory.annotation.Autowired;
  13 import org.springframework.boot.test.context.SpringBootTest;
  14 import org.springframework.boot.test.context.TestConfiguration;
  15 import org.springframework.context.annotation.Bean;
  16 import org.springframework.context.annotation.Primary;
  17 import org.springframework.kafka.annotation.KafkaListener;
  18 import org.springframework.kafka.core.KafkaTemplate;
  19 import org.springframework.kafka.support.KafkaHeaders;
  20 import org.springframework.kafka.support.SendResult;
  21 import org.springframework.kafka.test.context.EmbeddedKafka;
  22 import org.springframework.messaging.handler.annotation.Header;
  23 import org.springframework.messaging.handler.annotation.Payload;
  24 import org.springframework.util.LinkedMultiValueMap;
  25 import org.springframework.util.MultiValueMap;
  26
  27 import java.time.Duration;
  28
  29 import static de.juplo.kafka.wordcount.counter.CounterApplicationIT.TOPIC_IN;
  30 import static de.juplo.kafka.wordcount.counter.CounterApplicationIT.TOPIC_OUT;
  31 import static org.awaitility.Awaitility.await;
  32
  33
  34 @SpringBootTest(
  35                 properties = {
  36                                 "spring.kafka.producer.value-serializer=org.springframework.kafka.support.serializer.JsonSerializer",
  37                                 "spring.kafka.producer.properties.spring.json.add.type.headers=false",
  38                                 "spring.kafka.consumer.auto-offset-reset=earliest",
  39                                 "spring.kafka.consumer.key-deserializer=org.springframework.kafka.support.serializer.JsonDeserializer",
  40                                 "spring.kafka.consumer.value-deserializer=org.springframework.kafka.support.serializer.JsonDeserializer",
  41                                 "spring.kafka.consumer.properties.spring.json.type.mapping=word:de.juplo.kafka.wordcount.top10.TestOutputWord,counter: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         Consumer consumer;
  58
  59
  60         @BeforeAll
  61         public static void testSendMessage(
  62                         @Autowired KafkaTemplate<String, TestInputWord> kafkaTemplate)
  63         {
  64                 TestData
  65                                 .getInputMessages()
  66                                 .forEach(kv ->
  67                                 {
  68                                         try
  69                                         {
  70                                                 SendResult<String, TestInputWord> result = kafkaTemplate.send(TOPIC_IN, kv.key, kv.value).get();
  71                                                 log.info(
  72                                                                 "Sent: {}={}, partition={}, offset={}",
  73                                                                 result.getProducerRecord().key(),
  74                                                                 result.getProducerRecord().value(),
  75                                                                 result.getRecordMetadata().partition(),
  76                                                                 result.getRecordMetadata().offset());
  77                                         }
  78                                         catch (Exception e)
  79                                         {
  80                                                 throw new RuntimeException(e);
  81                                         }
  82                                 });
  83         }
  84
  85         @DisplayName("Await the expected output messages")
  86         @Test
  87         void testSendMessage()
  88         {
  89                 await("Expected messages")
  90                                 .atMost(Duration.ofSeconds(10))
  91                                 .untilAsserted(() -> consumer.enforceAssertion(TestData.expectedMessagesAssertion()));
  92         }
  93
  94
  95         static class Consumer
  96         {
  97                 private final MultiValueMap<TestOutputWord, TestOutputWordCounter> received = new LinkedMultiValueMap<>();
  98
  99                 @KafkaListener(groupId = "TEST", topics = TOPIC_OUT)
 100                 public synchronized void receive(
 101                                 @Header(KafkaHeaders.RECEIVED_KEY) TestOutputWord word,
 102                                 @Payload TestOutputWordCounter counter)
 103                 {
 104                         log.debug("Received message: {} -> {}", word, counter);
 105                         received.add(word, counter);
 106                 }
 107
 108                 synchronized void enforceAssertion(
 109                                 java.util.function.Consumer<MultiValueMap<TestOutputWord, TestOutputWordCounter>> assertion)
 110                 {
 111                         assertion.accept(received);
 112                 }
 113         }
 114
 115         @TestConfiguration
 116         static class Configuration
 117         {
 118                 @Bean
 119                 Consumer consumer()
 120                 {
 121                         return new Consumer();
 122                 }
 123
 124                 @Primary
 125                 @Bean
 126                 KeyValueBytesStoreSupplier inMemoryStoreSupplier()
 127                 {
 128                         return Stores.inMemoryKeyValueStore("TEST-STORE");
 129                 }
 130         }
 131 }