Apache ZooKeeper - Curator Framework: List children of a zNode [getChildren]

ZooKeeper | Curator Framework: List children of a zNode [getChildren]

Notes
Example

Notes:
The code bellow let you print all direct zNodes (children) under a specific path.

Calling the method "CuratorFramework::getChildren" will return a list of zNode names (List<String>).

If the path doesn't exist it will throw an exception: org.apache.zookeeper.KeeperException$NoNodeException: KeeperErrorCode = NoNode for /path
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org.apache.zookeeper.KeeperException$NoNodeException: KeeperErrorCode = NoNode for /path
In order for the code bellow to work:
► Make sure to update the "CONNECT_STRING" variable with your information.
Example
Here's an example of how to list all zNodes under a specific path:
final String CONNECT_STRING = "localhost:2181"; final int SESSION_TIMEOUT_MS = Integer.valueOf(60 * 1000); final int CONNECTION_TIMEOUT_MS = Integer.valueOf(15 * 1000); final RetryPolicy RETRY_POLICY = new RetryOneTime(1000); // -- CuratorFrameworkFactory::newClient final CuratorFramework curatorFramework = CuratorFrameworkFactory.newClient(CONNECT_STRING, SESSION_TIMEOUT_MS, CONNECTION_TIMEOUT_MS, RETRY_POLICY); // -- CuratorFramework::start curatorFramework.start(); // -- CuratorFramework::getChildren final String path = "/abc/abc1"; List<String> children = curatorFramework.getChildren().forPath(path); for (String child : children) { System.out.println(child); } // -- CuratorFramework::close curatorFramework.close();
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final String CONNECT_STRING = "localhost:2181";

final int SESSION_TIMEOUT_MS = Integer.valueOf(60 * 1000);
final int CONNECTION_TIMEOUT_MS = Integer.valueOf(15 * 1000);
final RetryPolicy RETRY_POLICY = new RetryOneTime(1000);

// -- CuratorFrameworkFactory::newClient
final CuratorFramework curatorFramework = CuratorFrameworkFactory.newClient(CONNECT_STRING, SESSION_TIMEOUT_MS, CONNECTION_TIMEOUT_MS, RETRY_POLICY);

// -- CuratorFramework::start
curatorFramework.start();

// -- CuratorFramework::getChildren
final String path = "/abc/abc1";
List<String> children = curatorFramework.getChildren().forPath(path);

for (String child : children) {
System.out.println(child);
}

// -- CuratorFramework::close
curatorFramework.close();