juplo.de Git - demos/kafka/wordcount/blob - src/test/java/de/juplo/kafka/wordcount/top10/Top10ApplicationIT.java

   1 package de.juplo.kafka.wordcount.top10;
   2
   3 import de.juplo.kafka.wordcount.counter.TestWord;
   4 import de.juplo.kafka.wordcount.counter.TestCounter;
   5 import de.juplo.kafka.wordcount.query.TestRanking;
   6 import de.juplo.kafka.wordcount.query.TestUser;
   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.junit.jupiter.api.*;
  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.support.SendResult;
  20 import org.springframework.kafka.test.context.EmbeddedKafka;
  21 import org.springframework.messaging.handler.annotation.Header;
  22 import org.springframework.messaging.handler.annotation.Payload;
  23 import org.springframework.util.LinkedMultiValueMap;
  24 import org.springframework.util.MultiValueMap;
  25
  26 import java.time.Duration;
  27 import java.util.stream.Stream;
  28
  29 import static de.juplo.kafka.wordcount.top10.Top10StreamProcessor.STORE_NAME;
  30 import static org.awaitility.Awaitility.await;
  31
  32
  33 @SpringBootTest(
  34                 properties = {
  35                                 "spring.kafka.producer.key-serializer=org.springframework.kafka.support.serializer.JsonSerializer",
  36                                 "spring.kafka.producer.value-serializer=org.springframework.kafka.support.serializer.JsonSerializer",
  37                                 "spring.kafka.producer.properties.spring.json.type.mapping=word:de.juplo.kafka.wordcount.counter.TestWord,counter:de.juplo.kafka.wordcount.counter.TestCounter",
  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=user:de.juplo.kafka.wordcount.query.TestUser,ranking:de.juplo.kafka.wordcount.query.TestRanking",
  42                                 "logging.level.root=WARN",
  43                                 "logging.level.de.juplo=DEBUG",
  44                                 "logging.level.org.apache.kafka.clients=INFO",
  45                                 "logging.level.org.apache.kafka.streams=INFO",
  46                                 "juplo.wordcount.top10.bootstrap-server=${spring.embedded.kafka.brokers}",
  47                                 "juplo.wordcount.top10.commit-interval=100",
  48                                 "juplo.wordcount.top10.cacheMaxBytes=0",
  49                                 "juplo.wordcount.top10.input-topic=" + Top10ApplicationIT.TOPIC_IN,
  50                                 "juplo.wordcount.top10.output-topic=" + Top10ApplicationIT.TOPIC_OUT })
  51 @EmbeddedKafka(topics = { Top10ApplicationIT.TOPIC_IN, Top10ApplicationIT.TOPIC_OUT })
  52 @Slf4j
  53 public class Top10ApplicationIT
  54 {
  55         public static final String TOPIC_IN = "in";
  56         public static final String TOPIC_OUT = "out";
  57
  58         @Autowired
  59         Consumer consumer;
  60         @Autowired
  61         Top10StreamProcessor streamProcessor;
  62
  63
  64         @BeforeAll
  65         public static void testSendMessage(
  66                         @Autowired KafkaTemplate<TestWord, TestCounter> kafkaTemplate)
  67         {
  68                 Stream
  69                                 .of(TestData.INPUT_MESSAGES)
  70                                 .forEach(kv ->
  71                                 {
  72                                         try
  73                                         {
  74                                                 SendResult<TestWord, TestCounter> result = kafkaTemplate.send(TOPIC_IN, kv.key, kv.value).get();
  75                                                 log.info(
  76                                                                 "Sent: {}={}, partition={}, offset={}",
  77                                                                 result.getProducerRecord().key(),
  78                                                                 result.getProducerRecord().value(),
  79                                                                 result.getRecordMetadata().partition(),
  80                                                                 result.getRecordMetadata().offset());
  81                                         }
  82                                         catch (Exception e)
  83                                         {
  84                                                 throw new RuntimeException(e);
  85                                         }
  86                                 });
  87         }
  88
  89         @DisplayName("Await the expected state in the state-store")
  90         @Test
  91         public void testAwaitExpectedState()
  92         {
  93                 await("Expected state")
  94                                 .atMost(Duration.ofSeconds(5))
  95                                 .untilAsserted(() -> TestData.assertExpectedState(streamProcessor.getStore()));
  96         }
  97
  98         @DisplayName("Await the expected output messages")
  99         @Test
 100         @Disabled
 101         public void testAwaitExpectedMessages()
 102         {
 103                 await("Expected messages")
 104                                 .atMost(Duration.ofSeconds(5))
 105                                 .untilAsserted(() -> consumer.enforceAssertion(
 106                                                 receivedMessages -> TestData.assertExpectedMessages(receivedMessages)));
 107         }
 108
 109         @DisplayName("Await the expected number of messages")
 110         @Test
 111         public void testAwaitExpectedNumberOfMessagesForUsers()
 112         {
 113                 await("Expected number of messages")
 114                                 .atMost(Duration.ofSeconds(5))
 115                                 .untilAsserted(() -> consumer.enforceAssertion(
 116                                                 receivedMessages -> TestData.assertExpectedNumberOfMessagesForUsers(receivedMessages)));
 117         }
 118
 119         @DisplayName("Await the expected final output messages")
 120         @Test
 121         public void testAwaitExpectedLastMessagesForUsers()
 122         {
 123                 await("Expected final output messages")
 124                                 .atMost(Duration.ofSeconds(5))
 125                                 .untilAsserted(() -> consumer.enforceAssertion(
 126                                                 receivedMessages -> TestData.assertExpectedLastMessagesForUsers(receivedMessages)));
 127         }
 128
 129
 130         static class Consumer
 131         {
 132                 private final MultiValueMap<TestUser, TestRanking> received = new LinkedMultiValueMap<>();
 133
 134                 @KafkaListener(groupId = "TEST", topics = TOPIC_OUT)
 135                 public synchronized void receive(
 136                                 @Header(KafkaHeaders.RECEIVED_KEY) TestUser user,
 137                                 @Payload TestRanking ranking)
 138                 {
 139                         log.debug("Received message: {} -> {}", user, ranking);
 140                         received.add(user, ranking);
 141                 }
 142
 143                 synchronized void enforceAssertion(
 144                                 java.util.function.Consumer<MultiValueMap<TestUser, TestRanking>> assertion)
 145                 {
 146                         assertion.accept(received);
 147                 }
 148         }
 149
 150         @TestConfiguration
 151         static class Configuration
 152         {
 153                 @Bean
 154                 Consumer consumer()
 155                 {
 156                         return new Consumer();
 157                 }
 158
 159                 @Primary
 160                 @Bean
 161                 KeyValueBytesStoreSupplier inMemoryStoreSupplier()
 162                 {
 163                         return Stores.inMemoryKeyValueStore(STORE_NAME);
 164                 }
 165         }
 166 }