package de.juplo.kafka;
+import org.apache.kafka.clients.consumer.ConsumerRecord;
import org.apache.kafka.clients.producer.ProducerRecord;
+import org.apache.kafka.common.serialization.LongSerializer;
import org.apache.kafka.common.serialization.StringSerializer;
import org.apache.kafka.common.utils.Bytes;
+import org.springframework.boot.test.context.TestConfiguration;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Primary;
+import org.springframework.test.context.ContextConfiguration;
import java.util.function.Consumer;
-import java.util.stream.IntStream;
-public class ApplicationTests extends GenericApplicationTests<String, String>
+@ContextConfiguration(classes = ApplicationTests.Configuration.class)
+public class ApplicationTests extends GenericApplicationTests<String, Long>
{
public ApplicationTests()
{
super(
new RecordGenerator()
{
- final int[] numbers = { 1, 7, 3, 2, 33, 6, 11 };
- final String[] dieWilden13 =
- IntStream
- .range(1,14)
- .mapToObj(i -> "seeräuber-" + i)
- .toArray(i -> new String[i]);
final StringSerializer stringSerializer = new StringSerializer();
- final Bytes startMessage = new Bytes(stringSerializer.serialize(TOPIC, "START"));
- final Bytes endMessage = new Bytes(stringSerializer.serialize(TOPIC, "END"));
-
- int counter = 0;
+ final LongSerializer longSerializer = new LongSerializer();
@Override
boolean logicErrors,
Consumer<ProducerRecord<Bytes, Bytes>> messageSender)
{
- counter = 0;
+ int i = 0;
- for (int i = 0; i < 33; i++)
+ for (int partition = 0; partition < 10; partition++)
{
- String seeräuber = dieWilden13[i%13];
- int number = numbers[i%7];
-
- Bytes key = new Bytes(stringSerializer.serialize(TOPIC, seeräuber));
-
- send(key, startMessage, logicErrors, messageSender);
- for (int message = 1; message <= number; message++)
+ for (int key = 0; key < 10; key++)
{
- Bytes value = new Bytes(stringSerializer.serialize(TOPIC, Integer.toString(message)));
- send(key, value, logicErrors, messageSender);
- }
- send(key, endMessage, logicErrors, messageSender);
- }
+ i++;
- return counter;
- }
+ Bytes value = new Bytes(longSerializer.serialize(TOPIC, (long)i));
+ if (i == 77)
+ {
+ if (logicErrors)
+ {
+ value = new Bytes(longSerializer.serialize(TOPIC, Long.MIN_VALUE));
+ }
+ if (poisonPills)
+ {
+ value = new Bytes(stringSerializer.serialize(TOPIC, "BOOM (Poison-Pill)!"));
+ }
+ }
- void send(
- Bytes key,
- Bytes value,
- boolean logicErrors,
- Consumer<ProducerRecord<Bytes, Bytes>> messageSender)
- {
- counter++;
+ ProducerRecord<Bytes, Bytes> record =
+ new ProducerRecord<>(
+ TOPIC,
+ partition,
+ new Bytes(stringSerializer.serialize(TOPIC,Integer.toString(partition*10+key%2))),
+ value);
- if (counter == 77)
- {
- if (logicErrors)
- {
- value = value.equals(startMessage) ? endMessage : startMessage;
+ messageSender.accept(record);
}
}
- messageSender.accept(new ProducerRecord<>(TOPIC, key, value));
- }
-
- @Override
- public boolean canGeneratePoisonPill()
- {
- return false;
+ return i;
}
});
}
+
+
+ @TestConfiguration
+ public static class Configuration
+ {
+ @Primary
+ @Bean
+ public ApplicationRecordHandler recordHandler()
+ {
+ ApplicationRecordHandler recordHandler = new ApplicationRecordHandler();
+ return new ApplicationRecordHandler()
+ {
+ @Override
+ public void accept(ConsumerRecord<String, Long> record)
+ {
+ if (record.value() == Long.MIN_VALUE)
+ throw new RuntimeException("BOOM (Logic-Error)!");
+ super.accept(record);
+ }
+ };
+ }
+ }
}