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(TestData.expectedNumberOfMessagesForWordAssertion()));
  95         }
  96
  97         @DisplayName("Await the expected output messages")
  98         @Test
  99         void testSendMessage()
 100         {
 101                 await("Expected messages")
 102                                 .atMost(Duration.ofSeconds(10))
 103                                 .untilAsserted(() -> consumer.enforceAssertion(TestData.expectedMessagesAssertion()));
 104         }
 105
 106         @DisplayName("Await the expected final output messages")
 107         @Test
 108         public void testAwaitExpectedLastMessagesForUsers()
 109         {
 110                 await("Expected final output messages")
 111                                 .atMost(Duration.ofSeconds(5))
 112                                 .untilAsserted(() -> consumer.enforceAssertion(TestData.expectedLastMessagesForWordAssertion()));
 113         }
 114
 115         @DisplayName("Await the expected state in the state-store")
 116         @Test
 117         public void testAwaitExpectedState()
 118         {
 119                 await("Expected state")
 120                                 .atMost(Duration.ofSeconds(5))
 121                                 .untilAsserted(() -> TestData.assertExpectedState(streamProcessor.getStore()));
 122         }
 123
 124
 125         static class Consumer
 126         {
 127                 private final MultiValueMap<TestOutputWord, TestOutputWordCounter> received = new LinkedMultiValueMap<>();
 128
 129                 @KafkaListener(groupId = "TEST", topics = TOPIC_OUT)
 130                 public synchronized void receive(
 131                                 @Header(KafkaHeaders.RECEIVED_KEY) TestOutputWord word,
 132                                 @Payload TestOutputWordCounter counter)
 133                 {
 134                         log.debug("Received message: {} -> {}", word, counter);
 135                         received.add(word, counter);
 136                 }
 137
 138                 synchronized void enforceAssertion(
 139                                 java.util.function.Consumer<MultiValueMap<TestOutputWord, TestOutputWordCounter>> assertion)
 140                 {
 141                         assertion.accept(received);
 142                 }
 143         }
 144
 145         @TestConfiguration
 146         static class Configuration
 147         {
 148                 @Bean
 149                 Consumer consumer()
 150                 {
 151                         return new Consumer();
 152                 }
 153
 154                 @Primary
 155                 @Bean
 156                 KeyValueBytesStoreSupplier inMemoryStoreSupplier()
 157                 {
 158                         return Stores.inMemoryKeyValueStore(STORE_NAME);
 159                 }
 160         }
 161 }