Examples with OffsetsInitializer org.apache.flink.connector.kafka.source.enumerator.initializer.OffsetsInitializer used on opensource projects

Example 1 with OffsetsInitializer

use of org.apache.flink.connector.kafka.source.enumerator.initializer.OffsetsInitializer in project flink by apache.

the class KafkaEnumeratorTest method createEnumerator.

/**
 * Create the enumerator. For the purpose of the tests in this class we don't care about the
 * subscriber and offsets initializer, so just use arbitrary settings.
 */
private KafkaSourceEnumerator createEnumerator(MockSplitEnumeratorContext<KafkaPartitionSplit> enumContext, boolean enablePeriodicPartitionDiscovery, Collection<String> topicsToSubscribe, Set<TopicPartition> assignedPartitions, Properties overrideProperties) {
    // Use a TopicPatternSubscriber so that no exception if a subscribed topic hasn't been
    // created yet.
    StringJoiner topicNameJoiner = new StringJoiner("|");
    topicsToSubscribe.forEach(topicNameJoiner::add);
    Pattern topicPattern = Pattern.compile(topicNameJoiner.toString());
    KafkaSubscriber subscriber = KafkaSubscriber.getTopicPatternSubscriber(topicPattern);
    OffsetsInitializer startingOffsetsInitializer = OffsetsInitializer.earliest();
    OffsetsInitializer stoppingOffsetsInitializer = new NoStoppingOffsetsInitializer();
    Properties props = new Properties(KafkaSourceTestEnv.getConsumerProperties(StringDeserializer.class));
    KafkaSourceEnumerator.deepCopyProperties(overrideProperties, props);
    String partitionDiscoverInterval = enablePeriodicPartitionDiscovery ? "1" : "-1";
    props.setProperty(KafkaSourceOptions.PARTITION_DISCOVERY_INTERVAL_MS.key(), partitionDiscoverInterval);
    return new KafkaSourceEnumerator(subscriber, startingOffsetsInitializer, stoppingOffsetsInitializer, props, enumContext, Boundedness.CONTINUOUS_UNBOUNDED, assignedPartitions);
}