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.TestInputUser;
   4 import de.juplo.kafka.wordcount.splitter.TestInputWord;
   5 import de.juplo.kafka.wordcount.top10.TestOutputWord;
   6 import de.juplo.kafka.wordcount.top10.TestOutputWordCounter;
   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.BeforeAll;
  11 import org.junit.jupiter.api.DisplayName;
  12 import org.junit.jupiter.api.Test;
  13 import org.springframework.beans.factory.annotation.Autowired;
  14 import org.springframework.boot.test.context.SpringBootTest;
  15 import org.springframework.boot.test.context.TestConfiguration;
  16 import org.springframework.context.annotation.Bean;
  17 import org.springframework.context.annotation.Primary;
  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.counter.CounterApplicationIT.TOPIC_IN;
  31 import static de.juplo.kafka.wordcount.counter.CounterApplicationIT.TOPIC_OUT;
  32 import static de.juplo.kafka.wordcount.counter.CounterStreamProcessor.STORE_NAME;
  33 import static org.awaitility.Awaitility.await;
  34
  35
  36 @SpringBootTest(
  37                 properties = {
  38                                 "spring.kafka.producer.key-serializer=org.springframework.kafka.support.serializer.JsonSerializer",
  39                                 "spring.kafka.producer.value-serializer=org.springframework.kafka.support.serializer.JsonSerializer",
  40                                 "spring.kafka.producer.properties.spring.json.add.type.headers=false",
  41                                 "spring.kafka.consumer.auto-offset-reset=earliest",
  42                                 "spring.kafka.consumer.key-deserializer=org.springframework.kafka.support.serializer.JsonDeserializer",
  43                                 "spring.kafka.consumer.value-deserializer=org.springframework.kafka.support.serializer.JsonDeserializer",
  44                                 "spring.kafka.consumer.properties.spring.json.type.mapping=word:de.juplo.kafka.wordcount.top10.TestOutputWord,counter:de.juplo.kafka.wordcount.top10.TestOutputWordCounter",
  45                                 "logging.level.root=WARN",
  46                                 "logging.level.de.juplo=DEBUG",
  47                                 "juplo.wordcount.counter.bootstrap-server=${spring.embedded.kafka.brokers}",
  48                                 "juplo.wordcount.counter.commit-interval=0",
  49                                 "juplo.wordcount.counter.cacheMaxBytes=0",
  50                                 "juplo.wordcount.counter.input-topic=" + TOPIC_IN,
  51                                 "juplo.wordcount.counter.output-topic=" + TOPIC_OUT })
  52 @EmbeddedKafka(topics = { TOPIC_IN, TOPIC_OUT })
  53 @Slf4j
  54 public class CounterApplicationIT
  55 {
  56         public static final String TOPIC_IN = "in";
  57         public static final String TOPIC_OUT = "out";
  58
  59         @Autowired
  60         Consumer consumer;
  61         @Autowired
  62         CounterStreamProcessor streamProcessor;
  63
  64
  65         @BeforeAll
  66         public static void testSendMessage(
  67                         @Autowired KafkaTemplate<TestInputUser, TestInputWord> kafkaTemplate)
  68         {
  69                 TestData
  70                                 .getInputMessages()
  71                                 .forEach(kv ->
  72                                 {
  73                                         try
  74                                         {
  75                                                 SendResult<TestInputUser, TestInputWord> result = kafkaTemplate.send(TOPIC_IN, kv.key, kv.value).get();
  76                                                 log.info(
  77                                                                 "Sent: {}={}, partition={}, offset={}",
  78                                                                 result.getProducerRecord().key(),
  79                                                                 result.getProducerRecord().value(),
  80                                                                 result.getRecordMetadata().partition(),
  81                                                                 result.getRecordMetadata().offset());
  82                                         }
  83                                         catch (Exception e)
  84                                         {
  85                                                 throw new RuntimeException(e);
  86                                         }
  87                                 });
  88         }
  89
  90         @DisplayName("Await the expected number of messages")
  91         @Test
  92         public void testAwaitExpectedNumberOfMessagesForUsers()
  93         {
  94                 await("Expected number of messages")
  95                                 .atMost(Duration.ofSeconds(5))
  96                                 .untilAsserted(() -> consumer.enforceAssertion(
  97                                                 receivedMessages -> TestData.assertExpectedNumberOfMessagesForWord(receivedMessages)));
  98         }
  99
 100         @DisplayName("Await the expected output messages")
 101         @Test
 102         void testSendMessage()
 103         {
 104                 await("Expected messages")
 105                                 .atMost(Duration.ofSeconds(10))
 106                                 .untilAsserted(() -> consumer.enforceAssertion(
 107                                                 receivedMessages -> TestData.assertExpectedMessages(receivedMessages)));
 108         }
 109
 110         @DisplayName("Await the expected final output messages")
 111         @Test
 112         public void testAwaitExpectedLastMessagesForUsers()
 113         {
 114                 await("Expected final output messages")
 115                                 .atMost(Duration.ofSeconds(5))
 116                                 .untilAsserted(() -> consumer.enforceAssertion(
 117                                                 receivedMessages -> TestData.assertExpectedLastMessagesForWord(receivedMessages)));
 118         }
 119
 120         @DisplayName("Await the expected state in the state-store")
 121         @Test
 122         public void testAwaitExpectedState()
 123         {
 124                 await("Expected state")
 125                                 .atMost(Duration.ofSeconds(5))
 126                                 .untilAsserted(() -> TestData.assertExpectedState(streamProcessor.getStore()));
 127         }
 128
 129
 130         static class Consumer
 131         {
 132                 private final MultiValueMap<TestOutputWord, TestOutputWordCounter> received = new LinkedMultiValueMap<>();
 133
 134                 @KafkaListener(groupId = "TEST", topics = TOPIC_OUT)
 135                 public synchronized void receive(
 136                                 @Header(KafkaHeaders.RECEIVED_KEY) TestOutputWord word,
 137                                 @Payload TestOutputWordCounter counter)
 138                 {
 139                         log.debug("Received message: {} -> {}", word, counter);
 140                         received.add(word, counter);
 141                 }
 142
 143                 synchronized void enforceAssertion(
 144                                 java.util.function.Consumer<MultiValueMap<TestOutputWord, TestOutputWordCounter>> 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 }