Java Code Examples for kafka.zk.KafkaZkClient#pathExists()

The following examples show how to use kafka.zk.KafkaZkClient#pathExists() . 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: KafkaMetricsServiceImpl.java From kafka-eagle with Apache License 2.0

6 votes

private String describeTopicConfig(String clusterAlias, String topic) {
	String target = "";
	try {
		KafkaZkClient kafkaZkCli = kafkaZKPool.getZkClient(clusterAlias);
		if (kafkaZkCli.pathExists(CONFIG_TOPIC_PATH + topic)) {
			Tuple2<Option<byte[]>, Stat> tuple = kafkaZkCli.getDataAndStat(CONFIG_TOPIC_PATH + topic);
			target = new String(tuple._1.get());
		}
		if (kafkaZkCli != null) {
			kafkaZKPool.release(clusterAlias, kafkaZkCli);
			kafkaZkCli = null;
		}
	} catch (Exception e) {
		e.printStackTrace();
		LOG.error("Describe topic[" + topic + "] config has error, msg is " + e.getMessage());
	}
	return target;
}

Example 2

Source File: BrokerServiceImpl.java From kafka-eagle with Apache License 2.0

6 votes

/** Statistics topic partitions total used as page. */
public long partitionNumbers(String clusterAlias, String topic) {
	long count = 0L;
	if (Kafka.CONSUMER_OFFSET_TOPIC.equals(topic)) {
		return count;
	}
	KafkaZkClient zkc = kafkaZKPool.getZkClient(clusterAlias);
	try {
		if (zkc.pathExists(BROKER_TOPICS_PATH + "/" + topic + "/partitions")) {
			Seq<String> subBrokerTopicsPaths = zkc.getChildren(BROKER_TOPICS_PATH + "/" + topic + "/partitions");
			count = JavaConversions.seqAsJavaList(subBrokerTopicsPaths).size();
		}
	} catch (Exception e) {
		LOG.error("Get topic partition numbers has error, msg is " + e.getCause().getMessage());
		e.printStackTrace();
	}
	if (zkc != null) {
		kafkaZKPool.release(clusterAlias, zkc);
		zkc = null;
	}
	return count;
}

Example 3

Source File: BrokerServiceImpl.java From kafka-eagle with Apache License 2.0

6 votes

/** Get kafka broker numbers from zookeeper. */
public long brokerNumbers(String clusterAlias) {
	long count = 0;
	KafkaZkClient zkc = kafkaZKPool.getZkClient(clusterAlias);
	try {
		if (zkc.pathExists(BROKER_IDS_PATH)) {
			Seq<String> subBrokerIdsPaths = zkc.getChildren(BROKER_IDS_PATH);
			count = JavaConversions.seqAsJavaList(subBrokerIdsPaths).size();
		}
	} catch (Exception e) {
		LOG.error("Get kafka broker numbers has error, msg is " + e.getCause().getMessage());
		e.printStackTrace();
	}
	if (zkc != null) {
		kafkaZKPool.release(clusterAlias, zkc);
		zkc = null;
	}
	return count;
}

Example 4

Source File: BrokerServiceImpl.java From kafka-eagle with Apache License 2.0

6 votes

/** Get topic list {@link #topicList()} include cgroups from zookeeper. */
public List<String> topicList(String clusterAlias) {
	List<String> topics = new ArrayList<>();
	if (SystemConfigUtils.getBooleanProperty(clusterAlias + ".kafka.eagle.sasl.cgroup.enable")) {
		topics = SystemConfigUtils.getPropertyArrayList(clusterAlias + ".kafka.eagle.sasl.cgroup.topics", ",");
	} else if (SystemConfigUtils.getBooleanProperty(clusterAlias + ".kafka.eagle.ssl.cgroup.enable")) {
		topics = SystemConfigUtils.getPropertyArrayList(clusterAlias + ".kafka.eagle.ssl.cgroup.topics", ",");
	} else {
		KafkaZkClient zkc = kafkaZKPool.getZkClient(clusterAlias);
		try {
			if (zkc.pathExists(BROKER_TOPICS_PATH)) {
				Seq<String> subBrokerTopicsPaths = zkc.getChildren(BROKER_TOPICS_PATH);
				topics = JavaConversions.seqAsJavaList(subBrokerTopicsPaths);
				excludeTopic(topics);
			}
		} catch (Exception e) {
			LOG.error("Get topic list has error, msg is " + e.getCause().getMessage());
			e.printStackTrace();
		}
		if (zkc != null) {
			kafkaZKPool.release(clusterAlias, zkc);
			zkc = null;
		}
	}
	return topics;
}

Example 5

Source File: BrokerServiceImpl.java From kafka-eagle with Apache License 2.0

6 votes

/** Get broker id list. */
public List<Object> getBrokerIdList(String clusterAlias) {
	List<Object> brokerIds = new ArrayList<>();
	KafkaZkClient zkc = kafkaZKPool.getZkClient(clusterAlias);
	try {
		if (zkc.pathExists(BROKER_IDS_PATH)) {
			Seq<String> subBrokerIdsPaths = zkc.getChildren(BROKER_IDS_PATH);
			for (String id : JavaConversions.seqAsJavaList(subBrokerIdsPaths)) {
				brokerIds.add(Integer.parseInt(id));
			}
		}
	} catch (Exception e) {
		LOG.error("Get kafka broker id has error, msg is ", e);
		e.printStackTrace();
	}
	if (zkc != null) {
		kafkaZKPool.release(clusterAlias, zkc);
		zkc = null;
	}
	return brokerIds;
}

Example 6

Source File: ZkServiceImpl.java From kafka-eagle with Apache License 2.0

6 votes

/** Zookeeper delete command. */
public String delete(String clusterAlias, String cmd) {
	String ret = "";
	KafkaZkClient zkc = kafkaZKPool.getZkClient(clusterAlias);
	boolean status = zkc.pathExists(cmd);
	if (status) {
		if (zkc.deleteRecursive(cmd)) {
			ret = "[" + cmd + "] has delete success";
		} else {
			ret = "[" + cmd + "] has delete failed";
		}
	}
	if (zkc != null) {
		kafkaZKPool.release(clusterAlias, zkc);
		zkc = null;
	}
	return ret;
}

Example 7

Source File: ZkServiceImpl.java From kafka-eagle with Apache License 2.0

6 votes

/** Zookeeper get command. */
public String get(String clusterAlias, String cmd) {
	String ret = "";
	KafkaZkClient zkc = kafkaZKPool.getZkClient(clusterAlias);
	if (zkc.pathExists(cmd)) {
		Tuple2<Option<byte[]>, Stat> tuple2 = zkc.getDataAndStat(cmd);
		ret += new String(tuple2._1.get()) + "\n";
		ret += "cZxid = " + tuple2._2.getCzxid() + "\n";
		ret += "ctime = " + tuple2._2.getCtime() + "\n";
		ret += "mZxid = " + tuple2._2.getMzxid() + "\n";
		ret += "mtime = " + tuple2._2.getMtime() + "\n";
		ret += "pZxid = " + tuple2._2.getPzxid() + "\n";
		ret += "cversion = " + tuple2._2.getCversion() + "\n";
		ret += "dataVersion = " + tuple2._2.getVersion() + "\n";
		ret += "aclVersion = " + tuple2._2.getAversion() + "\n";
		ret += "ephemeralOwner = " + tuple2._2.getEphemeralOwner() + "\n";
		ret += "dataLength = " + tuple2._2.getDataLength() + "\n";
		ret += "numChildren = " + tuple2._2.getNumChildren() + "\n";
	}
	if (zkc != null) {
		kafkaZKPool.release(clusterAlias, zkc);
		zkc = null;
	}
	return ret;
}

Example 8

Source File: ZkServiceImpl.java From kafka-eagle with Apache License 2.0

5 votes

/** Zookeeper ls command. */
public String ls(String clusterAlias, String cmd) {
	String target = "";
	KafkaZkClient zkc = kafkaZKPool.getZkClient(clusterAlias);
	boolean status = zkc.pathExists(cmd);
	if (status) {
		Seq<String> seq = zkc.getChildren(cmd);
		target = JavaConversions.seqAsJavaList(seq).toString();
	}
	if (zkc != null) {
		kafkaZKPool.release(clusterAlias, zkc);
		zkc = null;
	}
	return target;
}

Example 9