Examples with MessageListenerStrategy org.sdase.commons.server.kafka.consumer.strategies.MessageListenerStrategy used on opensource projects

Example 1 with MessageListenerStrategy

use of org.sdase.commons.server.kafka.consumer.strategies.MessageListenerStrategy in project sda-dropwizard-commons by SDA-SE.

the class KafkaBundleWithConfigIT method kafkaConsumerReceivesMessagesAsyncCommit.

@Test
public void kafkaConsumerReceivesMessagesAsyncCommit() {
    String topic = "kafkaConsumerReceivesMessagesAsyncCommit";
    StringDeserializer deserializer = new StringDeserializer();
    KAFKA.getKafkaTestUtils().createTopic(topic, 1, (short) 1);
    // register adhoc implementations
    assertThat(kafkaBundle).isNotNull();
    kafkaBundle.createMessageListener(MessageListenerRegistration.builder().withListenerConfig(LISTENER_CONFIG_ASYNC).forTopic(topic).withConsumerConfig(ConsumerConfig.builder().withGroup(UUID.randomUUID().toString()).withClientId(CLIENT_ID_ASYNC).build()).withKeyDeserializer(deserializer).withValueDeserializer(deserializer).withListenerStrategy(new MessageListenerStrategy<String, String>() {

        @Override
        public void processRecords(ConsumerRecords<String, String> records, KafkaConsumer<String, String> consumer) {
            records.forEach(r -> resultsString.add(r.value()));
            consumer.commitSync();
            callbackCount++;
        }

        @Override
        public void commitOnClose(KafkaConsumer<String, String> consumer) {
        }

        @Override
        public void verifyConsumerConfig(Map<String, String> config) {
        }
    }).build());
    List<String> checkMessages = new ArrayList<>();
    // pass in messages
    for (int i = 0; i < KafkaBundleConsts.N_MESSAGES; i++) {
        String message = UUID.randomUUID().toString();
        checkMessages.add(message);
        stringStringProducer.send(new ProducerRecord<>(topic, message));
    }
    await().atMost(KafkaBundleConsts.N_MAX_WAIT_MS, MILLISECONDS).untilAsserted(() -> {
        assertThat(resultsString).containsExactlyInAnyOrderElementsOf(checkMessages);
        assertThat(callbackCount).isPositive();
    });
}