juplo.de Git - demos/kafka/training/blob - src/test/java/de/juplo/kafka/ApplicationTests.java

   1 package de.juplo.kafka;
   2
   3 import lombok.extern.slf4j.Slf4j;
   4 import org.apache.kafka.common.errors.InvalidProducerEpochException;
   5 import org.junit.jupiter.api.*;
   6 import org.junit.jupiter.api.extension.ExtendWith;
   7 import org.springframework.beans.factory.annotation.Value;
   8 import org.springframework.kafka.test.context.EmbeddedKafka;
   9 import org.springframework.test.context.junit.jupiter.SpringExtension;
  10
  11 import java.time.Duration;
  12 import java.util.concurrent.CompletableFuture;
  13
  14 import static de.juplo.kafka.ApplicationTests.PARTITIONS;
  15 import static de.juplo.kafka.ApplicationTests.TOPIC;
  16 import static org.assertj.core.api.Assertions.*;
  17 import static org.awaitility.Awaitility.*;
  18
  19
  20 @ExtendWith(SpringExtension.class)
  21 @EmbeddedKafka(
  22   topics = TOPIC,
  23   partitions = PARTITIONS,
  24   brokerProperties = {
  25     "transaction.state.log.replication.factor=1",
  26     "transaction.state.log.min.isr=1" })
  27 @Slf4j
  28 public class ApplicationTests
  29 {
  30         static final String TOPIC = "FOO";
  31         static final int PARTITIONS = 10;
  32
  33   @Value("${spring.embedded.kafka.brokers}")
  34   String bootstrapServers;
  35
  36         @Test
  37         void testConcurrentProducers() throws Exception
  38         {
  39     SimpleProducer instanceA = new SimpleProducer(
  40       bootstrapServers,
  41       TOPIC,
  42       "A",
  43       "FOO");
  44
  45     instanceA.begin();
  46     CompletableFuture<Long> resultA1 = instanceA.send("a","message #1");
  47                 await("Sending of 1. message for A is completed")
  48                                 .atMost(Duration.ofSeconds(5))
  49                                 .until(() -> resultA1.isDone());
  50     assertThat(resultA1.isCompletedExceptionally()).isFalse();
  51
  52     SimpleProducer instanceB = new SimpleProducer(
  53       bootstrapServers,
  54       TOPIC,
  55       "B",
  56       "FOO");
  57
  58     instanceB.begin();
  59     CompletableFuture<Long> resultB1 = instanceB.send("b","message #1");
  60     await("Sending of 1. message for B is completed")
  61       .atMost(Duration.ofSeconds(5))
  62       .until(() -> resultB1.isDone());
  63     assertThat(resultB1.isCompletedExceptionally()).isFalse();
  64
  65     CompletableFuture<Long> resultA2 = instanceA.send("a","message #2");
  66     await("Sending of 2. message for A is completed")
  67       .atMost(Duration.ofSeconds(5))
  68       .until(() -> resultA2.isDone());
  69     assertThat(resultA2.isCompletedExceptionally()).isTrue();
  70
  71     CompletableFuture<Long> resultB2 = instanceB.send("b","message #2");
  72     await("Sending of 2. message for B is completed")
  73       .atMost(Duration.ofSeconds(5))
  74       .until(() -> resultB2.isDone());
  75     assertThat(resultB2.isCompletedExceptionally()).isFalse();
  76
  77     assertThatThrownBy(() -> instanceA.commit()).isInstanceOf(InvalidProducerEpochException.class);
  78     assertThatCode(() -> instanceB.commit()).doesNotThrowAnyException();
  79   }
  80 }