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 de.juplo.kafka.wordcount.counter.CounterStreamProcessor.STORE_NAME;
  32 import static org.awaitility.Awaitility.await;
  33
  34
  35 @SpringBootTest(
  36                 properties = {
  37                                 "spring.kafka.producer.value-serializer=org.springframework.kafka.support.serializer.JsonSerializer",
  38                                 "spring.kafka.producer.properties.spring.json.add.type.headers=false",
  39                                 "spring.kafka.consumer.auto-offset-reset=earliest",
  40                                 "spring.kafka.consumer.key-deserializer=org.springframework.kafka.support.serializer.JsonDeserializer",
  41                                 "spring.kafka.consumer.value-deserializer=org.springframework.kafka.support.serializer.JsonDeserializer",
  42                                 "spring.kafka.consumer.properties.spring.json.type.mapping=word:de.juplo.kafka.wordcount.top10.TestOutputWord,counter:de.juplo.kafka.wordcount.top10.TestOutputWordCounter",
  43                                 "logging.level.root=WARN",
  44                                 "logging.level.de.juplo=DEBUG",
  45                                 "juplo.wordcount.counter.bootstrap-server=${spring.embedded.kafka.brokers}",
  46                                 "juplo.wordcount.counter.commit-interval=0",
  47                                 "juplo.wordcount.counter.cacheMaxBytes=0",
  48                                 "juplo.wordcount.counter.input-topic=" + TOPIC_IN,
  49                                 "juplo.wordcount.counter.output-topic=" + TOPIC_OUT })
  50 @EmbeddedKafka(topics = { TOPIC_IN, TOPIC_OUT })
  51 @Slf4j
  52 public class CounterApplicationIT
  53 {
  54         public static final String TOPIC_IN = "in";
  55         public static final String TOPIC_OUT = "out";
  56
  57         @Autowired
  58         Consumer consumer;
  59         @Autowired
  60         CounterStreamProcessor streamProcessor;
  61
  62
  63         @BeforeAll
  64         public static void testSendMessage(
  65                         @Autowired KafkaTemplate<String, TestInputWord> kafkaTemplate)
  66         {
  67                 TestData
  68                                 .getInputMessages()
  69                                 .forEach(kv ->
  70                                 {
  71                                         try
  72                                         {
  73                                                 SendResult<String, TestInputWord> result = kafkaTemplate.send(TOPIC_IN, kv.key, kv.value).get();
  74                                                 log.info(
  75                                                                 "Sent: {}={}, partition={}, offset={}",
  76                                                                 result.getProducerRecord().key(),
  77                                                                 result.getProducerRecord().value(),
  78                                                                 result.getRecordMetadata().partition(),
  79                                                                 result.getRecordMetadata().offset());
  80                                         }
  81                                         catch (Exception e)
  82                                         {
  83                                                 throw new RuntimeException(e);
  84                                         }
  85                                 });
  86         }
  87
  88         @DisplayName("Await the expected number of messages")
  89         @Test
  90         public void testAwaitExpectedNumberOfMessagesForUsers()
  91         {
  92                 await("Expected number of messages")
  93                                 .atMost(Duration.ofSeconds(5))
  94                                 .untilAsserted(() -> consumer.enforceAssertion(
  95                                                 receivedMessages -> TestData.assertExpectedNumberOfMessagesForWord(receivedMessages)));
  96         }
  97
  98         @DisplayName("Await the expected output messages")
  99         @Test
 100         void testSendMessage()
 101         {
 102                 await("Expected messages")
 103                                 .atMost(Duration.ofSeconds(10))
 104                                 .untilAsserted(() -> consumer.enforceAssertion(
 105                                                 receivedMessages -> TestData.assertExpectedMessages(receivedMessages)));
 106         }
 107
 108         @DisplayName("Await the expected final output messages")
 109         @Test
 110         public void testAwaitExpectedLastMessagesForUsers()
 111         {
 112                 await("Expected final output messages")
 113                                 .atMost(Duration.ofSeconds(5))
 114                                 .untilAsserted(() -> consumer.enforceAssertion(
 115                                                 receivedMessages -> TestData.assertExpectedLastMessagesForWord(receivedMessages)));
 116         }
 117
 118         @DisplayName("Await the expected state in the state-store")
 119         @Test
 120         public void testAwaitExpectedState()
 121         {
 122                 await("Expected state")
 123                                 .atMost(Duration.ofSeconds(5))
 124                                 .untilAsserted(() -> TestData.assertExpectedState(streamProcessor.getStore()));
 125         }
 126
 127
 128         static class Consumer
 129         {
 130                 private final MultiValueMap<TestOutputWord, TestOutputWordCounter> received = new LinkedMultiValueMap<>();
 131
 132                 @KafkaListener(groupId = "TEST", topics = TOPIC_OUT)
 133                 public synchronized void receive(
 134                                 @Header(KafkaHeaders.RECEIVED_KEY) TestOutputWord word,
 135                                 @Payload TestOutputWordCounter counter)
 136                 {
 137                         log.debug("Received message: {} -> {}", word, counter);
 138                         received.add(word, counter);
 139                 }
 140
 141                 synchronized void enforceAssertion(
 142                                 java.util.function.Consumer<MultiValueMap<TestOutputWord, TestOutputWordCounter>> assertion)
 143                 {
 144                         assertion.accept(received);
 145                 }
 146         }
 147
 148         @TestConfiguration
 149         static class Configuration
 150         {
 151                 @Bean
 152                 Consumer consumer()
 153                 {
 154                         return new Consumer();
 155                 }
 156
 157                 @Primary
 158                 @Bean
 159                 KeyValueBytesStoreSupplier inMemoryStoreSupplier()
 160                 {
 161                         return Stores.inMemoryKeyValueStore(STORE_NAME);
 162                 }
 163         }
 164 }