How to use

topicExists

method

in

kafka.zk.KafkaZkClient

private boolean isMigrationToNewKafkaTopic(KafkaTopics kafkaTopics) {
  return kafkaTopics.getSecondary().isPresent() &&
      !kafkaZkClient.topicExists(kafkaTopics.getPrimary().name().asString());
}

@Override
public boolean topicExists(Topic topic) {
  return kafkaNamesMapper.toKafkaTopics(topic)
      .allMatch(kafkaTopic -> kafkaZkClient.topicExists(kafkaTopic.name().asString()));
}

public boolean topicExists(String topicName, String kafkaClusterName) {
  Topic topic = topic(topicName).build();
  return kafkaNamesMapper.toKafkaTopics(topic)
      .allMatch(kafkaTopic -> zkClients.get(kafkaClusterName).topicExists(kafkaTopic.name().asString()) &&
          !isMarkedForDeletion(kafkaClusterName, kafkaTopic));
}

public boolean topicExists(String topicName, String kafkaClusterName) {
  Topic topic = topic(topicName).build();
  return kafkaNamesMapper.toKafkaTopics(topic)
      .allMatch(kafkaTopic -> zkClients.get(kafkaClusterName).topicExists(kafkaTopic.name().asString()) &&
          !isMarkedForDeletion(kafkaClusterName, kafkaTopic));
}

private void createTopic(String topicName, KafkaZkClient kafkaZkClient) {
  Topic topic = topic(topicName).build();
  kafkaNamesMapper.toKafkaTopics(topic).forEach(kafkaTopic -> {
    AdminZkClient adminZkClient = new AdminZkClient(kafkaZkClient);
    adminZkClient.createTopic(kafkaTopic.name().asString(), DEFAULT_PARTITIONS, DEFAULT_REPLICATION_FACTOR, new Properties(), RackAwareMode.Enforced$.MODULE$);
    waitAtMost(adjust(Duration.ONE_MINUTE)).until(() -> {
          kafkaZkClient.topicExists(kafkaTopic.name().asString());
        }
    );
  });
}

private void createTopic(String topicName, KafkaZkClient kafkaZkClient) {
  Topic topic = topic(topicName).build();
  kafkaNamesMapper.toKafkaTopics(topic).forEach(kafkaTopic -> {
    AdminZkClient adminZkClient = new AdminZkClient(kafkaZkClient);
    adminZkClient.createTopic(kafkaTopic.name().asString(), DEFAULT_PARTITIONS, DEFAULT_REPLICATION_FACTOR, new Properties(), RackAwareMode.Enforced$.MODULE$);
    waitAtMost(adjust(Duration.ONE_MINUTE)).until(() -> {
          kafkaZkClient.topicExists(kafkaTopic.name().asString());
        }
    );
  });
}