juplo.de Git - demos/kafka/wordcount/blob - src/test/java/de/juplo/kafka/wordcount/popular/PopularApplicationIT.java

   1 package de.juplo.kafka.wordcount.popular;
   2
   3 import de.juplo.kafka.wordcount.splitter.InputUser;
   4 import de.juplo.kafka.wordcount.splitter.InputWord;
   5 import de.juplo.kafka.wordcount.stats.OutputWindowedWord;
   6 import de.juplo.kafka.wordcount.stats.OutputWordCounter;
   7 import lombok.extern.slf4j.Slf4j;
   8 import org.apache.kafka.streams.state.KeyValueBytesStoreSupplier;
   9 import org.apache.kafka.streams.state.Stores;
  10 import org.apache.kafka.streams.state.WindowBytesStoreSupplier;
  11 import org.junit.jupiter.api.BeforeAll;
  12 import org.junit.jupiter.api.DisplayName;
  13 import org.junit.jupiter.api.Test;
  14 import org.springframework.beans.factory.annotation.Autowired;
  15 import org.springframework.boot.test.context.SpringBootTest;
  16 import org.springframework.boot.test.context.TestConfiguration;
  17 import org.springframework.context.annotation.Bean;
  18 import org.springframework.kafka.annotation.KafkaListener;
  19 import org.springframework.kafka.core.KafkaTemplate;
  20 import org.springframework.kafka.support.KafkaHeaders;
  21 import org.springframework.kafka.support.SendResult;
  22 import org.springframework.kafka.test.context.EmbeddedKafka;
  23 import org.springframework.messaging.handler.annotation.Header;
  24 import org.springframework.messaging.handler.annotation.Payload;
  25 import org.springframework.util.LinkedMultiValueMap;
  26 import org.springframework.util.MultiValueMap;
  27
  28 import java.time.Duration;
  29
  30 import static de.juplo.kafka.wordcount.popular.PopularApplicationIT.TOPIC_IN;
  31 import static de.juplo.kafka.wordcount.popular.PopularApplicationIT.TOPIC_OUT;
  32 import static de.juplo.kafka.wordcount.popular.PopularStreamProcessor.KEY_VALUE_STORE_NAME;
  33 import static de.juplo.kafka.wordcount.popular.PopularStreamProcessor.WINDOW_STORE_NAME;
  34 import static org.awaitility.Awaitility.await;
  35
  36
  37 @SpringBootTest(
  38                 properties = {
  39                                 "spring.main.allow-bean-definition-overriding=true",
  40                                 "spring.kafka.producer.key-serializer=org.springframework.kafka.support.serializer.JsonSerializer",
  41                                 "spring.kafka.producer.value-serializer=org.springframework.kafka.support.serializer.JsonSerializer",
  42                                 "spring.kafka.producer.properties.spring.json.add.type.headers=false",
  43                                 "spring.kafka.consumer.auto-offset-reset=earliest",
  44                                 "spring.kafka.consumer.key-deserializer=org.springframework.kafka.support.serializer.JsonDeserializer",
  45                                 "spring.kafka.consumer.value-deserializer=org.springframework.kafka.support.serializer.JsonDeserializer",
  46                                 "spring.kafka.consumer.properties.spring.json.type.mapping=word:de.juplo.kafka.wordcount.stats.OutputWindowedWord,counter:de.juplo.kafka.wordcount.stats.OutputWordCounter",
  47                                 "logging.level.root=WARN",
  48                                 "logging.level.de.juplo=DEBUG",
  49                                 "juplo.wordcount.popular.bootstrap-server=${spring.embedded.kafka.brokers}",
  50                                 "juplo.wordcount.popular.commit-interval=100",
  51                                 "juplo.wordcount.popular.cache-max-bytes=0",
  52                                 "juplo.wordcount.popular.input-topic=" + TOPIC_IN,
  53                                 "juplo.wordcount.popular.output-topic=" + TOPIC_OUT })
  54 @EmbeddedKafka(topics = { TOPIC_IN, TOPIC_OUT })
  55 @Slf4j
  56 public class PopularApplicationIT
  57 {
  58         public static final String TOPIC_IN = "in";
  59         public static final String TOPIC_OUT = "out";
  60
  61         @Autowired
  62         Consumer consumer;
  63         @Autowired
  64         PopularStreamProcessor streamProcessor;
  65
  66
  67         @BeforeAll
  68         public static void testSendMessage(
  69                         @Autowired KafkaTemplate<InputUser, InputWord> kafkaTemplate)
  70         {
  71                 TestData
  72                                 .sendInputMessages((instant, kv) ->
  73                                 {
  74                                         try
  75                                         {
  76                                                 SendResult<InputUser, InputWord> result = kafkaTemplate.send(TOPIC_IN, null, instant.toEpochMilli(), kv.key, kv.value).get();
  77                                                 log.info(
  78                                                                 "Sent: {}={}, partition={}, offset={}",
  79                                                                 result.getProducerRecord().key(),
  80                                                                 result.getProducerRecord().value(),
  81                                                                 result.getRecordMetadata().partition(),
  82                                                                 result.getRecordMetadata().offset());
  83                                         }
  84                                         catch (Exception e)
  85                                         {
  86                                                 throw new RuntimeException(e);
  87                                         }
  88                                 });
  89         }
  90
  91         @DisplayName("Await the expected number of messages")
  92         @Test
  93         public void testAwaitExpectedNumberOfMessagesForUsers()
  94         {
  95                 await("Expected number of messages")
  96                                 .atMost(Duration.ofSeconds(5))
  97                                 .untilAsserted(() -> consumer.enforceAssertion(
  98                                                 receivedMessages -> TestData.assertExpectedNumberOfMessagesForWord(receivedMessages)));
  99         }
 100
 101         @DisplayName("Await the expected output messages")
 102         @Test
 103         void testSendMessage()
 104         {
 105                 await("Expected messages")
 106                                 .atMost(Duration.ofSeconds(10))
 107                                 .untilAsserted(() -> consumer.enforceAssertion(
 108                                                 receivedMessages -> TestData.assertExpectedMessages(receivedMessages)));
 109         }
 110
 111         @DisplayName("Await the expected final output messages")
 112         @Test
 113         public void testAwaitExpectedLastMessagesForWord()
 114         {
 115                 await("Expected final output messages")
 116                                 .atMost(Duration.ofSeconds(5))
 117                                 .untilAsserted(() -> consumer.enforceAssertion(
 118                                                 receivedMessages -> TestData.assertExpectedLastMessagesForWord(receivedMessages)));
 119         }
 120
 121         @DisplayName("Await the expected state in the state-store")
 122         @Test
 123         public void testAwaitExpectedState()
 124         {
 125                 await("Expected state")
 126                                 .atMost(Duration.ofSeconds(5))
 127                                 .untilAsserted(() -> TestData.assertExpectedState(streamProcessor.getStore()));
 128         }
 129
 130
 131         static class Consumer
 132         {
 133                 private final MultiValueMap<OutputWindowedWord, OutputWordCounter> received = new LinkedMultiValueMap<>();
 134
 135                 @KafkaListener(groupId = "TEST", topics = TOPIC_OUT)
 136                 public synchronized void receive(
 137                                 @Header(KafkaHeaders.RECEIVED_KEY) OutputWindowedWord word,
 138                                 @Payload OutputWordCounter counter)
 139                 {
 140                         log.debug("Received message: {} -> {}", word, counter);
 141                         received.add(word, counter);
 142                 }
 143
 144                 synchronized void enforceAssertion(
 145                                 java.util.function.Consumer<MultiValueMap<OutputWindowedWord, OutputWordCounter>> assertion)
 146                 {
 147                         assertion.accept(received);
 148                 }
 149         }
 150
 151         @TestConfiguration
 152         static class Configuration
 153         {
 154                 @Bean
 155                 Consumer consumer()
 156                 {
 157                         return new Consumer();
 158                 }
 159
 160                 @Bean
 161                 WindowBytesStoreSupplier windowBytesStoreSupplier()
 162                 {
 163                         return Stores.inMemoryWindowStore(
 164                                         WINDOW_STORE_NAME,
 165                                         Duration.ofSeconds(60),
 166                                         Duration.ofSeconds(30),
 167                                         false);
 168                 }
 169
 170                 @Bean
 171                 KeyValueBytesStoreSupplier keyValueBytesStoreSupplier()
 172                 {
 173                         return Stores.inMemoryKeyValueStore(KEY_VALUE_STORE_NAME);
 174                 }
 175         }
 176 }