1 package de.juplo.kafka.chat.backend.implementation.kafka;
3 import de.juplo.kafka.chat.backend.ChatBackendProperties;
4 import de.juplo.kafka.chat.backend.domain.ShardingPublisherStrategy;
5 import lombok.extern.slf4j.Slf4j;
6 import org.apache.kafka.clients.producer.ProducerRecord;
7 import org.apache.kafka.common.TopicPartition;
8 import org.springframework.context.annotation.Bean;
9 import org.springframework.kafka.core.KafkaTemplate;
10 import org.springframework.kafka.support.SendResult;
11 import reactor.core.publisher.Mono;
13 import java.util.List;
17 public abstract class KafkaTestUtils
19 public static class KafkaTestConfiguration
22 public ShardingPublisherStrategy shardingPublisherStrategy()
24 return shard -> Mono.just("MOCKED!");
28 public WorkAssignor dataChannelWorkAssignor(
29 ChatBackendProperties properties,
30 DataChannel dataChannel)
34 List<TopicPartition> assignedPartitions =
35 List.of(new TopicPartition(properties.getKafka().getDataChannelTopic(), 2));
36 consumer.assign(assignedPartitions);
37 dataChannel.onPartitionsAssigned(assignedPartitions);
43 public static void sendAndLoadStoredData(
44 KafkaTemplate<String, String> messageTemplate,
47 ChannelTaskRunner channelTaskRunner)
49 send(messageTemplate, infoTopic, "5c73531c-6fc4-426c-adcb-afc5c140a0f7","{ \"id\": \"5c73531c-6fc4-426c-adcb-afc5c140a0f7\", \"shard\": 2, \"name\": \"FOO\" }", "event_chatroom_created");
50 send(messageTemplate, dataTopic, "5c73531c-6fc4-426c-adcb-afc5c140a0f7","{ \"id\" : 1, \"user\" : \"peter\", \"text\" : \"Hallo, ich heiße Peter!\" }", "event_chatmessage_received");
51 send(messageTemplate, dataTopic, "5c73531c-6fc4-426c-adcb-afc5c140a0f7","{ \"id\" : 1, \"user\" : \"ute\", \"text\" : \"Ich bin Ute...\" }", "event_chatmessage_received");
52 send(messageTemplate, dataTopic, "5c73531c-6fc4-426c-adcb-afc5c140a0f7","{ \"id\" : 2, \"user\" : \"peter\", \"text\" : \"Willst du mit mir gehen?\" }", "event_chatmessage_received");
53 send(messageTemplate, dataTopic, "5c73531c-6fc4-426c-adcb-afc5c140a0f7","{ \"id\" : 1, \"user\" : \"klaus\", \"text\" : \"Ja? Nein? Vielleicht??\" }", "event_chatmessage_received");
55 channelTaskRunner.executeChannels();
58 private static void send(
59 KafkaTemplate<String, String> kafkaTemplate,
65 ProducerRecord<String, String> record = new ProducerRecord<>(topic, key, value);
66 record.headers().add("__TypeId__", typeId.getBytes());
67 SendResult<String, String> result = kafkaTemplate.send(record).join();
72 new TopicPartition(result.getRecordMetadata().topic(), result.getRecordMetadata().partition()));