How to use

zkMkPath

method

in

org.apache.hadoop.registry.client.impl.zk.CuratorService

/**
 * Create a path if it does not exist.
 * The check is poll + create; there's a risk that another process
 * may create the same path before the create() operation is executed/
 * propagated to the ZK node polled.
 *
 * @param path          path to create
 * @param acl           ACL for path -used when creating a new entry
 * @param createParents flag to trigger parent creation
 * @return true iff the path was created
 * @throws IOException
 */
@VisibleForTesting
public boolean maybeCreate(String path,
  CreateMode mode,
  List<ACL> acl,
  boolean createParents) throws IOException {
 return zkMkPath(path, mode, createParents, acl);
}

/**
 * Create a path if it does not exist.
 * The check is poll + create; there's a risk that another process
 * may create the same path before the create() operation is executed/
 * propagated to the ZK node polled.
 *
 * @param path path to create
 * @param acl ACL for path -used when creating a new entry
 * @param createParents flag to trigger parent creation
 * @return true iff the path was created
 * @throws IOException
 */
@VisibleForTesting
public boolean maybeCreate(String path,
  CreateMode mode,
  List<ACL> acl,
  boolean createParents) throws IOException {
 return zkMkPath(path, mode, createParents, acl);
}

private void mkPath(String path, CreateMode mode) throws IOException {
 curatorService.zkMkPath(path, mode, false,
   RegistrySecurity.WorldReadWriteACL);
}

private void mkPath(String path, CreateMode mode) throws IOException {
 curatorService.zkMkPath(path, mode, false,
   RegistrySecurity.WorldReadWriteACL);
}

/**
 * Recursively make a path.
 *
 * @param path path to create
 * @param acl  ACL for path
 * @throws IOException any problem
 */
public void zkMkParentPath(String path,
  List<ACL> acl) throws
  IOException {
 // split path into elements
 zkMkPath(RegistryPathUtils.parentOf(path),
   CreateMode.PERSISTENT, true, acl);
}

/**
 * Recursively make a path
 * @param path path to create
 * @param acl ACL for path
 * @throws IOException any problem
 */
public void zkMkParentPath(String path,
  List<ACL> acl) throws
  IOException {
 // split path into elements
 zkMkPath(RegistryPathUtils.parentOf(path),
   CreateMode.PERSISTENT, true, acl);
}

/**
 * test that ZK can write as itself
 * @throws Throwable
 */
@Test
public void testZookeeperCanWrite() throws Throwable {
 System.setProperty("curator-log-events", "true");
 startSecureZK();
 CuratorService curator = null;
 LoginContext login = login(ZOOKEEPER_LOCALHOST,
   ZOOKEEPER_CLIENT_CONTEXT,
   keytab_zk);
 try {
  logLoginDetails(ZOOKEEPER, login);
  RegistrySecurity.setZKSaslClientProperties(ZOOKEEPER,
                       ZOOKEEPER_CLIENT_CONTEXT);
  curator = startCuratorServiceInstance("ZK", true);
  LOG.info(curator.toString());
  addToTeardown(curator);
  curator.zkMkPath("/", CreateMode.PERSISTENT, false,
    RegistrySecurity.WorldReadWriteACL);
  curator.zkList("/");
  curator.zkMkPath("/zookeeper", CreateMode.PERSISTENT, false,
    RegistrySecurity.WorldReadWriteACL);
 } finally {
  logout(login);
  ServiceOperations.stop(curator);
 }
}

@Test
public void testInsecureClientToZK() throws Throwable {
 startSecureZK();
 userZookeeperToCreateRoot();
 RegistrySecurity.clearZKSaslClientProperties();
 CuratorService curatorService =
   startCuratorServiceInstance("insecure client", false);
 curatorService.zkList("/");
 curatorService.zkMkPath("", CreateMode.PERSISTENT, false,
   RegistrySecurity.WorldReadWriteACL);
}

@Test
public void testInsecureClientToZK() throws Throwable {
 startSecureZK();
 userZookeeperToCreateRoot();
 RegistrySecurity.clearZKSaslClientProperties();
 CuratorService curatorService =
   startCuratorServiceInstance("insecure client", false);
 curatorService.zkList("/");
 curatorService.zkMkPath("", CreateMode.PERSISTENT, false,
   RegistrySecurity.WorldReadWriteACL);
}

/**
 * test that ZK can write as itself
 * @throws Throwable
 */
@Test
public void testZookeeperCanWrite() throws Throwable {
 System.setProperty("curator-log-events", "true");
 startSecureZK();
 CuratorService curator = null;
 LoginContext login = login(ZOOKEEPER_LOCALHOST,
   ZOOKEEPER_CLIENT_CONTEXT,
   keytab_zk);
 try {
  logLoginDetails(ZOOKEEPER, login);
  RegistrySecurity.setZKSaslClientProperties(ZOOKEEPER,
                       ZOOKEEPER_CLIENT_CONTEXT);
  curator = startCuratorServiceInstance("ZK", true);
  LOG.info(curator.toString());
  addToTeardown(curator);
  curator.zkMkPath("/", CreateMode.PERSISTENT, false,
    RegistrySecurity.WorldReadWriteACL);
  curator.zkList("/");
  curator.zkMkPath("/zookeeper", CreateMode.PERSISTENT, false,
    RegistrySecurity.WorldReadWriteACL);
 } finally {
  logout(login);
  ServiceOperations.stop(curator);
 }
}

curator.zkMkPath("/", CreateMode.PERSISTENT, false,
  RegistrySecurity.WorldReadWriteACL);
ZKPathDumper pathDumper = curator.dumpPath(true);

curator.zkMkPath("/", CreateMode.PERSISTENT, false,
  RegistrySecurity.WorldReadWriteACL);
ZKPathDumper pathDumper = curator.dumpPath(true);