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.input-topic=" + TOPIC_IN,
  50                                 "juplo.wordcount.counter.output-topic=" + TOPIC_OUT })
  51 @EmbeddedKafka(topics = { TOPIC_IN, TOPIC_OUT })
  52 @Slf4j
  53 public class CounterApplicationIT
  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         CounterStreamProcessor streamProcessor;
  62
  63
  64         @BeforeAll
  65         public static void testSendMessage(
  66                         @Autowired KafkaTemplate<TestInputUser, TestInputWord> kafkaTemplate)
  67         {
  68                 TestData
  69                                 .getInputMessages()
  70                                 .forEach(kv ->
  71                                 {
  72                                         try
  73                                         {
  74                                                 SendResult<TestInputUser, TestInputWord> 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 number of messages")
  90         @Test
  91         public void testAwaitExpectedNumberOfMessagesForUsers()
  92         {
  93                 await("Expected number of messages")
  94                                 .atMost(Duration.ofSeconds(5))
  95                                 .untilAsserted(() -> consumer.enforceAssertion(
  96                                                 receivedMessages -> TestData.assertExpectedNumberOfMessagesForWord(receivedMessages)));
  97         }
  98
  99         @DisplayName("Await the expected output messages")
 100         @Test
 101         void testSendMessage()
 102         {
 103                 await("Expected messages")
 104                                 .atMost(Duration.ofSeconds(10))
 105                                 .untilAsserted(() -> consumer.enforceAssertion(
 106                                                 receivedMessages -> TestData.assertExpectedMessages(receivedMessages)));
 107         }
 108
 109         @DisplayName("Await the expected final output messages")
 110         @Test
 111         public void testAwaitExpectedLastMessagesForUsers()
 112         {
 113                 await("Expected final output messages")
 114                                 .atMost(Duration.ofSeconds(5))
 115                                 .untilAsserted(() -> consumer.enforceAssertion(
 116                                                 receivedMessages -> TestData.assertExpectedLastMessagesForWord(receivedMessages)));
 117         }
 118
 119         @DisplayName("Await the expected state in the state-store")
 120         @Test
 121         public void testAwaitExpectedState()
 122         {
 123                 await("Expected state")
 124                                 .atMost(Duration.ofSeconds(5))
 125                                 .untilAsserted(() -> TestData.assertExpectedState(streamProcessor.getStore()));
 126         }
 127
 128
 129         static class Consumer
 130         {
 131                 private final MultiValueMap<TestOutputWord, TestOutputWordCounter> received = new LinkedMultiValueMap<>();
 132
 133                 @KafkaListener(groupId = "TEST", topics = TOPIC_OUT)
 134                 public synchronized void receive(
 135                                 @Header(KafkaHeaders.RECEIVED_KEY) TestOutputWord word,
 136                                 @Payload TestOutputWordCounter counter)
 137                 {
 138                         log.debug("Received message: {} -> {}", word, counter);
 139                         received.add(word, counter);
 140                 }
 141
 142                 synchronized void enforceAssertion(
 143                                 java.util.function.Consumer<MultiValueMap<TestOutputWord, TestOutputWordCounter>> assertion)
 144                 {
 145                         assertion.accept(received);
 146                 }
 147         }
 148
 149         @TestConfiguration
 150         static class Configuration
 151         {
 152                 @Bean
 153                 Consumer consumer()
 154                 {
 155                         return new Consumer();
 156                 }
 157
 158                 @Primary
 159                 @Bean
 160                 KeyValueBytesStoreSupplier inMemoryStoreSupplier()
 161                 {
 162                         return Stores.inMemoryKeyValueStore(STORE_NAME);
 163                 }
 164         }
 165 }