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 lombok.RequiredArgsConstructor;
   4 import lombok.extern.slf4j.Slf4j;
   5 import org.apache.kafka.clients.consumer.ConsumerConfig;
   6 import org.apache.kafka.clients.consumer.ConsumerRecord;
   7 import org.apache.kafka.clients.producer.ProducerConfig;
   8 import org.apache.kafka.streams.KeyValue;
   9 import org.apache.kafka.streams.state.KeyValueBytesStoreSupplier;
  10 import org.apache.kafka.streams.state.Stores;
  11 import org.junit.jupiter.api.BeforeEach;
  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.config.ConcurrentKafkaListenerContainerFactory;
  20 import org.springframework.kafka.core.*;
  21 import org.springframework.kafka.support.serializer.JsonDeserializer;
  22 import org.springframework.kafka.support.serializer.JsonSerializer;
  23 import org.springframework.kafka.test.context.EmbeddedKafka;
  24
  25 import java.time.Duration;
  26 import java.util.LinkedList;
  27 import java.util.List;
  28 import java.util.Map;
  29 import java.util.Properties;
  30
  31 import static de.juplo.kafka.wordcount.counter.CounterApplicationIT.*;
  32 import static de.juplo.kafka.wordcount.counter.TestData.convertToMap;
  33 import static de.juplo.kafka.wordcount.counter.TestData.parseHeader;
  34 import static org.awaitility.Awaitility.await;
  35 import static org.springframework.kafka.support.mapping.AbstractJavaTypeMapper.*;
  36 import static org.springframework.kafka.support.mapping.AbstractJavaTypeMapper.DEFAULT_CLASSID_FIELD_NAME;
  37
  38
  39 @SpringBootTest(
  40                 properties = {
  41                                 "spring.kafka.bootstrap-servers=${spring.embedded.kafka.brokers}",
  42                                 "juplo.wordcount.counter.bootstrap-server=${spring.embedded.kafka.brokers}",
  43                                 "juplo.wordcount.counter.commit-interval=0",
  44                                 "juplo.wordcount.counter.cacheMaxBytes=0",
  45                                 "juplo.wordcount.counter.input-topic=" + TOPIC_IN,
  46                                 "juplo.wordcount.counter.output-topic=" + TOPIC_OUT })
  47 @EmbeddedKafka(topics = { TOPIC_IN, TOPIC_OUT }, partitions = PARTITIONS)
  48 @Slf4j
  49 public class CounterApplicationIT
  50 {
  51         public final static String TOPIC_IN = "in";
  52         public final static String TOPIC_OUT = "out";
  53         static final int PARTITIONS = 2;
  54
  55         @Autowired
  56         KafkaTemplate<String, Word> kafkaTemplate;
  57         @Autowired
  58         Consumer consumer;
  59
  60
  61         @BeforeEach
  62         public void clear()
  63         {
  64                 consumer.received.clear();
  65         }
  66
  67
  68         @Test
  69         void testSendMessage()
  70         {
  71                 TestData.writeInputData((key, value) -> kafkaTemplate.send(TOPIC_IN, key, value));
  72
  73                 await("Expexted converted data")
  74                                 .atMost(Duration.ofSeconds(10))
  75                                 .untilAsserted(() -> TestData.assertExpectedResult(consumer.getReceivedMessages()));
  76         }
  77
  78
  79         @RequiredArgsConstructor
  80         static class Consumer
  81         {
  82                 private final List<KeyValue<Word, WordCounter>> received = new LinkedList<>();
  83
  84                 @KafkaListener(groupId = "TEST", topics = TOPIC_OUT)
  85                 public synchronized void receive(ConsumerRecord<Word, WordCounter> record)
  86                 {
  87                         log.debug(
  88                                         "Received message: {} -> {}, key: {}, value: {}",
  89                                         record.key(),
  90                                         record.value(),
  91                                         parseHeader(record.headers(), KEY_DEFAULT_CLASSID_FIELD_NAME),
  92                                         parseHeader(record.headers(), DEFAULT_CLASSID_FIELD_NAME));
  93                         received.add(KeyValue.pair(record.key(),record.value()));
  94                 }
  95
  96                 synchronized List<KeyValue<Word, WordCounter>> getReceivedMessages()
  97                 {
  98                         return received;
  99                 }
 100         }
 101
 102         @TestConfiguration
 103         static class Configuration
 104         {
 105                 @Bean
 106                 ProducerFactory<?, ?> producerFactory(Properties streamProcessorProperties)
 107                 {
 108                         Map<String, Object> propertyMap = convertToMap(streamProcessorProperties);
 109
 110                         propertyMap.put(
 111                                         ProducerConfig.KEY_SERIALIZER_CLASS_CONFIG,
 112                                         JsonSerializer.class.getName());
 113                         propertyMap.put(
 114                                         ProducerConfig.VALUE_SERIALIZER_CLASS_CONFIG,
 115                                         JsonSerializer.class.getName());
 116
 117                         return new DefaultKafkaProducerFactory<>(propertyMap);
 118                 }
 119
 120                 @Bean
 121                 ConcurrentKafkaListenerContainerFactory<?, ?> kafkaListenerContainerFactory(
 122                                 Properties streamProcessorProperties)
 123                 {
 124                         Map<String, Object> propertyMap = convertToMap(streamProcessorProperties);
 125
 126                         propertyMap.put(
 127                                         ConsumerConfig.KEY_DESERIALIZER_CLASS_CONFIG,
 128                                         JsonDeserializer.class.getName());
 129                         propertyMap.put(
 130                                         ConsumerConfig.VALUE_DESERIALIZER_CLASS_CONFIG,
 131                                         JsonDeserializer.class.getName());
 132
 133                         ConsumerFactory<? super Object, ? super Object> consumerFactory =
 134                                         new DefaultKafkaConsumerFactory<>(propertyMap);
 135
 136                         ConcurrentKafkaListenerContainerFactory<Object, Object> kafkaListenerContainerFactory =
 137                                         new ConcurrentKafkaListenerContainerFactory<>();
 138
 139                         kafkaListenerContainerFactory.setConsumerFactory(consumerFactory);
 140
 141                         return kafkaListenerContainerFactory;
 142                 }
 143
 144                 @Bean
 145                 Consumer consumer()
 146                 {
 147                         return new Consumer();
 148                 }
 149
 150                 @Primary
 151                 @Bean
 152                 KeyValueBytesStoreSupplier inMemoryStoreSupplier()
 153                 {
 154                         return Stores.inMemoryKeyValueStore("TEST-STORE");
 155                 }
 156         }
 157 }