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 com.fasterxml.jackson.core.JsonProcessingException;
   4 import com.fasterxml.jackson.databind.ObjectMapper;
   5 import lombok.RequiredArgsConstructor;
   6 import lombok.Value;
   7 import lombok.extern.slf4j.Slf4j;
   8 import org.apache.kafka.clients.consumer.ConsumerRecord;
   9 import org.junit.jupiter.api.BeforeEach;
  10 import org.junit.jupiter.api.Test;
  11 import org.springframework.beans.factory.annotation.Autowired;
  12 import org.springframework.boot.test.context.SpringBootTest;
  13 import org.springframework.boot.test.context.TestConfiguration;
  14 import org.springframework.context.annotation.Bean;
  15 import org.springframework.kafka.annotation.KafkaListener;
  16 import org.springframework.kafka.core.KafkaTemplate;
  17 import org.springframework.kafka.test.context.EmbeddedKafka;
  18 import org.springframework.util.LinkedMultiValueMap;
  19 import org.springframework.util.MultiValueMap;
  20
  21 import java.time.Duration;
  22
  23 import static de.juplo.kafka.wordcount.counter.CounterApplicationIT.*;
  24 import static org.assertj.core.api.Assertions.assertThat;
  25 import static org.awaitility.Awaitility.*;
  26
  27
  28 @SpringBootTest(
  29                 properties = {
  30                                 "spring.kafka.bootstrap-servers=${spring.embedded.kafka.brokers}",
  31                                 "juplo.wordcount.counter.bootstrap-server=${spring.embedded.kafka.brokers}",
  32                                 "juplo.wordcount.counter.commit-interval=0",
  33                                 "juplo.wordcount.counter.cacheMaxBytes=0",
  34                                 "juplo.wordcount.counter.input-topic=" + TOPIC_IN,
  35                                 "juplo.wordcount.counter.output-topic=" + TOPIC_OUT })
  36 @EmbeddedKafka(topics = { TOPIC_IN, TOPIC_OUT }, partitions = PARTITIONS)
  37 @Slf4j
  38 public class CounterApplicationIT
  39 {
  40         public final static String TOPIC_IN = "in";
  41         public final static String TOPIC_OUT = "out";
  42         static final int PARTITIONS = 2;
  43
  44         @Autowired
  45         KafkaTemplate<String, String> kafkaTemplate;
  46         @Autowired
  47         ObjectMapper mapper;
  48         @Autowired
  49         Consumer consumer;
  50
  51
  52         @BeforeEach
  53         public void clear()
  54         {
  55                 consumer.received.clear();
  56         }
  57
  58
  59         @Test
  60         void testSendMessage() throws Exception
  61         {
  62                 kafkaTemplate.send(TOPIC_IN, "peter", "Hallo");
  63                 kafkaTemplate.send(TOPIC_IN, "klaus", "Müsch");
  64                 kafkaTemplate.send(TOPIC_IN, "peter", "Welt");
  65                 kafkaTemplate.send(TOPIC_IN, "klaus", "Müsch");
  66                 kafkaTemplate.send(TOPIC_IN, "klaus", "s");
  67                 kafkaTemplate.send(TOPIC_IN, "peter", "Boäh");
  68                 kafkaTemplate.send(TOPIC_IN, "peter", "Welt");
  69                 kafkaTemplate.send(TOPIC_IN, "peter", "Boäh");
  70                 kafkaTemplate.send(TOPIC_IN, "klaus", "s");
  71                 kafkaTemplate.send(TOPIC_IN, "peter", "Boäh");
  72                 kafkaTemplate.send(TOPIC_IN, "klaus", "s");
  73
  74                 Message peter1 = Message.of(
  75                                 "{\"username\":\"peter\",\"word\":\"Hallo\"}",
  76                                 "1");
  77                 Message peter2 = Message.of(
  78                                 "{\"username\":\"peter\",\"word\":\"Welt\"}",
  79                                 "1");
  80                 Message peter3 = Message.of(
  81                                 "{\"username\":\"peter\",\"word\":\"Boäh\"}",
  82                                 "1");
  83                 Message peter4 = Message.of(
  84                                 "{\"username\":\"peter\",\"word\":\"Welt\"}",
  85                                 "2");
  86                 Message peter5 = Message.of(
  87                                 "{\"username\":\"peter\",\"word\":\"Boäh\"}",
  88                                 "2");
  89                 Message peter6 = Message.of(
  90                                 "{\"username\":\"peter\",\"word\":\"Boäh\"}",
  91                                 "3");
  92
  93                 Message klaus1 = Message.of(
  94                                 "{\"username\":\"klaus\",\"word\":\"Müsch\"}",
  95                                 "1");
  96                 Message klaus2 = Message.of(
  97                                 "{\"username\":\"klaus\",\"word\":\"Müsch\"}",
  98                                 "2");
  99                 Message klaus3 = Message.of(
 100                                 "{\"username\":\"klaus\",\"word\":\"s\"}",
 101                                 "1");
 102                 Message klaus4 = Message.of(
 103                                 "{\"username\":\"klaus\",\"word\":\"s\"}",
 104                                 "2");
 105                 Message klaus5 = Message.of(
 106                                 "{\"username\":\"klaus\",\"word\":\"s\"}",
 107                                 "3");
 108
 109                 await("Expexted converted data")
 110                                 .atMost(Duration.ofSeconds(10))
 111                                 .untilAsserted(() ->
 112                                 {
 113                                         assertThat(consumer.received).hasSize(2);
 114                                         assertThat(consumer.received.get("klaus")).containsExactly(klaus1, klaus2, klaus3, klaus4, klaus5);
 115                                         assertThat(consumer.received.get("peter")).containsExactly(peter1, peter2, peter3, peter4, peter5, peter6);
 116                                 });
 117         }
 118
 119
 120         @RequiredArgsConstructor
 121         static class Consumer
 122         {
 123                 private final MultiValueMap<String, Message> received = new LinkedMultiValueMap<>();
 124                 private final ObjectMapper mapper;
 125
 126                 @KafkaListener(groupId = "TEST", topics = TOPIC_OUT)
 127                 public void receive(ConsumerRecord<String, String> record) throws JsonProcessingException
 128                 {
 129                         log.debug("Received message: {}", record);
 130                         Key key = mapper.readValue(record.key(), Key.class);
 131                         received.add(key.getUsername(), Message.of(record.key(),record.value()));
 132                 }
 133         }
 134
 135         @Value(staticConstructor = "of")
 136         static class Message
 137         {
 138                 String key;
 139                 String value;
 140         }
 141
 142         @TestConfiguration
 143         static class Configuration
 144         {
 145                 @Bean
 146                 Consumer consumer(ObjectMapper mapper)
 147                 {
 148                         return new Consumer(mapper);
 149                 }
 150         }
 151 }