kafka.utils.ZKGroupTopicDirs Java Examples

The following examples show how to use kafka.utils.ZKGroupTopicDirs. You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example #1
Source File: ZookeeperOffsetHandler.java    From Flink-CEPplus with Apache License 2.0 6 votes vote down vote up 
public static Long getOffsetFromZooKeeper(CuratorFramework curatorClient, String groupId, String topic, int partition) throws Exception {
	ZKGroupTopicDirs topicDirs = new ZKGroupTopicDirs(groupId, topic);
	String path = topicDirs.consumerOffsetDir() + "/" + partition;
	curatorClient.newNamespaceAwareEnsurePath(path).ensure(curatorClient.getZookeeperClient());

	byte[] data = curatorClient.getData().forPath(path);

	if (data == null) {
		return null;
	} else {
		String asString = new String(data, ConfigConstants.DEFAULT_CHARSET);
		if (asString.length() == 0) {
			return null;
		} else {
			try {
				return Long.valueOf(asString);
			}
			catch (NumberFormatException e) {
				LOG.error(
						"The offset in ZooKeeper for group '{}', topic '{}', partition {} is a malformed string: {}",
					groupId, topic, partition, asString);
				return null;
			}
		}
	}
}
Example #2
Source File: ZookeeperOffsetHandler.java    From flink with Apache License 2.0 6 votes vote down vote up 
public static Long getOffsetFromZooKeeper(CuratorFramework curatorClient, String groupId, String topic, int partition) throws Exception {
	ZKGroupTopicDirs topicDirs = new ZKGroupTopicDirs(groupId, topic);
	String path = topicDirs.consumerOffsetDir() + "/" + partition;
	curatorClient.newNamespaceAwareEnsurePath(path).ensure(curatorClient.getZookeeperClient());

	byte[] data = curatorClient.getData().forPath(path);

	if (data == null) {
		return null;
	} else {
		String asString = new String(data, ConfigConstants.DEFAULT_CHARSET);
		if (asString.length() == 0) {
			return null;
		} else {
			try {
				return Long.valueOf(asString);
			}
			catch (NumberFormatException e) {
				LOG.error(
						"The offset in ZooKeeper for group '{}', topic '{}', partition {} is a malformed string: {}",
					groupId, topic, partition, asString);
				return null;
			}
		}
	}
}
Example #3
Source File: ZookeeperCheckpointManager.java    From uReplicator with Apache License 2.0 6 votes vote down vote up 
public Long fetchOffset(TopicPartition topicPartition) {
  ZKGroupTopicDirs dirs = new ZKGroupTopicDirs(groupId, topicPartition.topic());
  String path = dirs.consumerOffsetDir() + "/" + topicPartition.partition();
  if (!commitZkClient.exists(path)) {
    return -1L;
  }
  String offset = commitZkClient.readData(path).toString();
  if (StringUtils.isEmpty(offset)) {
    return -1L;
  }
  try {
    return Long.parseLong(offset);
  } catch (Exception e) {
    LOGGER.warn("Parse offset {} for topic partition failed, zk path: {}", offset, path);
    return -1L;
  }
}
Example #4
Source File: ZookeeperOffsetHandler.java    From Flink-CEPplus with Apache License 2.0 5 votes vote down vote up 
public static void setOffsetInZooKeeper(CuratorFramework curatorClient, String groupId, String topic, int partition, long offset) throws Exception {
	ZKGroupTopicDirs topicDirs = new ZKGroupTopicDirs(groupId, topic);
	String path = topicDirs.consumerOffsetDir() + "/" + partition;
	curatorClient.newNamespaceAwareEnsurePath(path).ensure(curatorClient.getZookeeperClient());
	byte[] data = Long.toString(offset).getBytes(ConfigConstants.DEFAULT_CHARSET);
	curatorClient.setData().forPath(path, data);
}
Example #5
Source File: ZookeeperOffsetHandler.java    From flink with Apache License 2.0 5 votes vote down vote up 
public static void setOffsetInZooKeeper(CuratorFramework curatorClient, String groupId, String topic, int partition, long offset) throws Exception {
	ZKGroupTopicDirs topicDirs = new ZKGroupTopicDirs(groupId, topic);
	String path = topicDirs.consumerOffsetDir() + "/" + partition;
	curatorClient.newNamespaceAwareEnsurePath(path).ensure(curatorClient.getZookeeperClient());
	byte[] data = Long.toString(offset).getBytes(ConfigConstants.DEFAULT_CHARSET);
	curatorClient.setData().forPath(path, data);
}
Example #6
Source File: KafkaManager.java    From spark-streaming-direct-kafka with Apache License 2.0 5 votes vote down vote up 
public static void setOffsets(String zkOffsetManagement,
                              String groupID,
                              Map<TopicAndPartition, Long> offsets) {
    try (AutoZkClient zkClient = new AutoZkClient(zkOffsetManagement)) {
        offsets.forEach((topicAndPartition, offset) -> {
            ZKGroupTopicDirs topicDirs = new ZKGroupTopicDirs(groupID, topicAndPartition.topic());
            int partition = topicAndPartition.partition();
            String partitionOffsetPath = topicDirs.consumerOffsetDir() + "/" + partition;
            ZkUtils.updatePersistentPath(zkClient, partitionOffsetPath, Long.toString(offset));
            log.info("updating offset path" + partitionOffsetPath + " offset=" + Long.toString(offset));
        });
    }
}
Example #7
Source File: KafkaManager.java    From spark-streaming-direct-kafka with Apache License 2.0 5 votes vote down vote up 
public static Map<TopicAndPartition, Long> getOffsets(String zkKafkaServers,
                                                      String zkOffSetManager,
                                                      String groupID,
                                                      String topic,
                                                      Map<String, String> kafkaParams) {
    ZKGroupTopicDirs topicDirs = new ZKGroupTopicDirs(groupID, topic);
    Map<TopicAndPartition, Long> offsets = new HashMap<>();

    AutoZkClient zkKafkaClient = new AutoZkClient(zkKafkaServers);
    AutoZkClient zkOffsetManagerClient = new AutoZkClient(zkOffSetManager);

    List<?> partitions = JavaConversions.seqAsJavaList(
            ZkUtils.getPartitionsForTopics(
                    zkKafkaClient,
                    JavaConversions.asScalaBuffer(Collections.singletonList(topic))).head()._2());
    partitions.forEach(partition -> {
        String partitionOffsetPath = topicDirs.consumerOffsetDir() + "/" + partition;
        log.info("Offset location, zookeeper path=" + partitionOffsetPath);
        Option<String> maybeOffset = ZkUtils.readDataMaybeNull(zkOffsetManagerClient, partitionOffsetPath)._1();
        Long offset = maybeOffset.isDefined() ? Long.parseLong(maybeOffset.get()) : null;
        TopicAndPartition topicAndPartition = new TopicAndPartition(topic, Integer.parseInt(partition.toString()));
        offsets.put(topicAndPartition, offset);
    });

    fillInLatestOffsets(offsets, kafkaParams); // in case offsets are blank for any partition
    return offsets;
}
Example #8
Source File: ZookeeperCheckpointManager.java    From uReplicator with Apache License 2.0 5 votes vote down vote up 
private void commitOffsetToZookeeper(TopicPartition topicPartition, long offset) {
  if (!offsetCheckpoints.containsKey(topicPartition)
      || offsetCheckpoints.get(topicPartition) != offset) {
    ZKGroupTopicDirs dirs = new ZKGroupTopicDirs(groupId, topicPartition.topic());
    String path = dirs.consumerOffsetDir() + "/" + topicPartition.partition();
    if (!commitZkClient.exists(path)) {
      commitZkClient.createPersistent(path, true);
    }
    commitZkClient.writeData(path,
        String.valueOf(offset));
    offsetCheckpoints.put(topicPartition, offset);
  }
}
Example #9
Source File: CuratorKafkaMonitor.java    From Kafdrop with Apache License 2.0 4 votes vote down vote up 
private Stream<ConsumerPartitionVO> getConsumerPartitionStream(String groupId,
                                                               String topicName,
                                                               TopicVO topicOpt)
{
   ZKGroupTopicDirs groupTopicDirs = new ZKGroupTopicDirs(groupId, topicName);

   if (topicOpt == null || topicOpt.getName().equals(topicName))
   {
      topicOpt = getTopic(topicName).orElse(null);
   }

   if (topicOpt != null)
   {
      final TopicVO topic = topicOpt;

      Map<Integer, ConsumerOffsetVO> consumerOffsets = getConsumerOffsets(groupId, topic);

      return topic.getPartitions().stream()
         .map(partition -> {
            int partitionId = partition.getId();

            final ConsumerPartitionVO consumerPartition = new ConsumerPartitionVO(groupId, topicName, partitionId);
            consumerPartition.setOwner(
               Optional.ofNullable(
                  consumerTreeCache.getCurrentData(groupTopicDirs.consumerOwnerDir() + "/" + partitionId))
                  .map(data -> new String(data.getData()))
                  .orElse(null));

            consumerPartition.setConsumerOffset(consumerOffsets.getOrDefault(partitionId, ConsumerOffsetVO.UNREAD));

            final Optional<TopicPartitionVO> topicPartition = topic.getPartition(partitionId);
            consumerPartition.setSize(topicPartition.map(TopicPartitionVO::getSize).orElse(-1L));
            consumerPartition.setFirstOffset(topicPartition.map(TopicPartitionVO::getFirstOffset).orElse(-1L));

            return consumerPartition;
         });
   }
   else
   {
      return Stream.empty();
   }
}