Examples with FetchResponse kafka.javaapi.FetchResponse used on opensource projects

Example 11 with FetchResponse

use of kafka.javaapi.FetchResponse in project cdap by caskdata.

the class KafkaUtil method fetchMessages.

/**
   * Fetches messages from the given topic, partition and offset using the provided {@link SimpleConsumer}.
   *
   * @return A {@link ByteBufferMessageSet} of the given topic, partition for messages fetched
   *
   * @throws OffsetOutOfRangeException if the given offset is out of range.
   * @throws NotLeaderForPartitionException if the broker that the consumer is talking to is not the leader
   *                                        for the given topic and partition.
   * @throws UnknownTopicOrPartitionException if the topic or partition is not known by the Kafka server
   * @throws UnknownServerException if the Kafka server responded with error.
   */
public static ByteBufferMessageSet fetchMessages(SimpleConsumer consumer, String topic, int partition, int fetchSize, long requestOffset) throws KafkaException {
    FetchRequest req = new FetchRequestBuilder().clientId(consumer.clientId()).addFetch(topic, partition, requestOffset, fetchSize).build();
    FetchResponse fetchResponse = consumer.fetch(req);
    if (fetchResponse.hasError()) {
        throw Errors.forCode(fetchResponse.errorCode(topic, partition)).exception();
    }
    return fetchResponse.messageSet(topic, partition);
}