package de.juplo.kafka;
+import lombok.extern.slf4j.Slf4j;
import org.apache.kafka.clients.producer.ProducerRecord;
import org.apache.kafka.common.serialization.StringSerializer;
import org.apache.kafka.common.utils.Bytes;
+import org.springframework.beans.factory.annotation.Autowired;
+
+import java.util.*;
import java.util.function.Consumer;
+import java.util.stream.Collectors;
import java.util.stream.IntStream;
+import static org.assertj.core.api.Assertions.assertThat;
+
+@Slf4j
public class ApplicationTests extends GenericApplicationTests<String, String>
{
+ @Autowired
+ StateRepository stateRepository;
+
+
public ApplicationTests()
{
- super(
- new RecordGenerator()
+ super(new ApplicationTestRecrodGenerator());
+ ((ApplicationTestRecrodGenerator) recordGenerator).tests = this;
+ }
+
+
+ static class ApplicationTestRecrodGenerator implements RecordGenerator
+ {
+ ApplicationTests tests;
+
+ final int[] numbers = {1, 77, 33, 2, 66, 666, 11};
+ final String[] dieWilden13 =
+ IntStream
+ .range(1, 14)
+ .mapToObj(i -> "seeräuber-" + i)
+ .toArray(i -> new String[i]);
+ final StringSerializer stringSerializer = new StringSerializer();
+ final Bytes calculateMessage = new Bytes(stringSerializer.serialize(TOPIC, "CALCULATE"));
+
+ int counter = 0;
+
+ Map<String, List<AdderResult>> state;
+
+ @Override
+ public int generate(
+ boolean poisonPills,
+ boolean logicErrors,
+ Consumer<ProducerRecord<Bytes, Bytes>> messageSender)
+ {
+ counter = 0;
+ state =
+ Arrays
+ .stream(dieWilden13)
+ .collect(Collectors.toMap(
+ seeräuber -> seeräuber,
+ seeräuber -> new LinkedList()));
+
+ int number[] = {1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1};
+ int message[] = {1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1};
+ int next = 0;
+
+ for (int pass = 0; pass < 333; pass++)
+ {
+ for (int i = 0; i < 13; i++)
{
- 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;
-
-
- @Override
- public int generate(
- boolean poisonPills,
- boolean logicErrors,
- Consumer<ProducerRecord<Bytes, Bytes>> messageSender)
+ String seeräuber = dieWilden13[i];
+ Bytes key = new Bytes(stringSerializer.serialize(TOPIC, seeräuber));
+
+ if (message[i] > number[i])
{
- counter = 0;
+ send(key, calculateMessage, fail(logicErrors, pass, counter), messageSender);
+ state.get(seeräuber).add(new AdderResult(number[i], (number[i] + 1) * number[i] / 2));
+ // Pick next number to calculate
+ number[i] = numbers[next++ % numbers.length];
+ message[i] = 1;
+ log.debug("Seeräuber {} will die Summe für {} berechnen", seeräuber, number[i]);
+ }
- for (int i = 0; i < 33; i++)
- {
- String seeräuber = dieWilden13[i%13];
- int number = numbers[i%7];
+ Bytes value = new Bytes(stringSerializer.serialize(TOPIC, Integer.toString(message[i]++)));
+ send(key, value, fail(logicErrors, pass, counter), messageSender);
+ }
+ }
- Bytes key = new Bytes(stringSerializer.serialize(TOPIC, seeräuber));
+ return counter;
+ }
- send(key, startMessage, logicErrors, messageSender);
- for (int message = 1; message <= number; message++)
- {
- Bytes value = new Bytes(stringSerializer.serialize(TOPIC, Integer.toString(message)));
- send(key, value, logicErrors, messageSender);
- }
- send(key, endMessage, logicErrors, messageSender);
- }
+ boolean fail(boolean logicErrors, int pass, int counter)
+ {
+ return logicErrors && pass > 300 && counter % 77 == 0;
+ }
- return counter;
- }
+ void send(
+ Bytes key,
+ Bytes value,
+ boolean fail,
+ Consumer<ProducerRecord<Bytes, Bytes>> messageSender)
+ {
+ counter++;
+
+ if (fail)
+ {
+ value = new Bytes(stringSerializer.serialize(TOPIC, Integer.toString(-1)));
+ }
+
+ messageSender.accept(new ProducerRecord<>(TOPIC, key, value));
+ }
- void send(
- Bytes key,
- Bytes value,
- boolean logicErrors,
- Consumer<ProducerRecord<Bytes, Bytes>> messageSender)
+ @Override
+ public boolean canGeneratePoisonPill()
+ {
+ return false;
+ }
+
+ @Override
+ public void assertBusinessLogic()
+ {
+ for (int i = 0; i < PARTITIONS; i++)
+ {
+ StateDocument stateDocument =
+ tests.stateRepository.findById(Integer.toString(i)).get();
+
+ stateDocument
+ .results
+ .entrySet()
+ .stream()
+ .forEach(entry ->
{
- counter++;
+ String user = entry.getKey();
+ List<AdderResult> resultsForUser = entry.getValue();
- if (counter == 77)
+ for (int j = 0; j < resultsForUser.size(); j++)
{
- if (logicErrors)
+ if (!(j < state.get(user).size()))
{
- value = value.equals(startMessage) ? endMessage : startMessage;
+ break;
}
- }
- messageSender.accept(new ProducerRecord<>(TOPIC, key, value));
- }
+ assertThat(resultsForUser.get(j))
+ .as("Unexpected results calculation %d of user %s", j, user)
+ .isEqualTo(state.get(user).get(j));
+ }
- @Override
- public boolean canGeneratePoisonPill()
- {
- return false;
- }
- });
+ assertThat(state.get(user))
+ .as("More results calculated for user %s as expected", user)
+ .containsAll(resultsForUser);
+ });
+ }
+ }
}
-}
+}
\ No newline at end of file
projects / demos / kafka / training / blobdiff