Java Code Examples for org.apache.hadoop.registry.client.api.RegistryOperations#list()

The following examples show how to use org.apache.hadoop.registry.client.api.RegistryOperations#list() . 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: RegistryUtils.java    From hadoop with Apache License 2.0 6 votes vote down vote up 
/**
 * List children of a directory and retrieve their
 * {@link RegistryPathStatus} values.
 * <p>
 * This is not an atomic operation; A child may be deleted
 * during the iteration through the child entries. If this happens,
 * the <code>PathNotFoundException</code> is caught and that child
 * entry ommitted.
 *
 * @param path path
 * @return a possibly empty map of child entries listed by
 * their short name.
 * @throws PathNotFoundException path is not in the registry.
 * @throws InvalidPathnameException the path is invalid.
 * @throws IOException Any other IO Exception
 */
public static Map<String, RegistryPathStatus> statChildren(
    RegistryOperations registryOperations,
    String path)
    throws PathNotFoundException,
    InvalidPathnameException,
    IOException {
  List<String> childNames = registryOperations.list(path);
  Map<String, RegistryPathStatus> results =
      new HashMap<String, RegistryPathStatus>();
  for (String childName : childNames) {
    String child = join(path, childName);
    try {
      RegistryPathStatus stat = registryOperations.stat(child);
      results.put(childName, stat);
    } catch (PathNotFoundException pnfe) {
      if (LOG.isDebugEnabled()) {
        LOG.debug("stat failed on {}: moved? {}", child, pnfe, pnfe);
      }
      // and continue
    }
  }
  return results;
}
Example 2
Source File: RegistryUtils.java    From big-c with Apache License 2.0 6 votes vote down vote up 
/**
 * List children of a directory and retrieve their
 * {@link RegistryPathStatus} values.
 * <p>
 * This is not an atomic operation; A child may be deleted
 * during the iteration through the child entries. If this happens,
 * the <code>PathNotFoundException</code> is caught and that child
 * entry ommitted.
 *
 * @param path path
 * @return a possibly empty map of child entries listed by
 * their short name.
 * @throws PathNotFoundException path is not in the registry.
 * @throws InvalidPathnameException the path is invalid.
 * @throws IOException Any other IO Exception
 */
public static Map<String, RegistryPathStatus> statChildren(
    RegistryOperations registryOperations,
    String path)
    throws PathNotFoundException,
    InvalidPathnameException,
    IOException {
  List<String> childNames = registryOperations.list(path);
  Map<String, RegistryPathStatus> results =
      new HashMap<String, RegistryPathStatus>();
  for (String childName : childNames) {
    String child = join(path, childName);
    try {
      RegistryPathStatus stat = registryOperations.stat(child);
      results.put(childName, stat);
    } catch (PathNotFoundException pnfe) {
      if (LOG.isDebugEnabled()) {
        LOG.debug("stat failed on {}: moved? {}", child, pnfe, pnfe);
      }
      // and continue
    }
  }
  return results;
}
Example 3
Source File: TestSecureRMRegistryOperations.java    From hadoop with Apache License 2.0 5 votes vote down vote up 
@Test
public void testAnonReadAccess() throws Throwable {
  RMRegistryOperationsService rmRegistryOperations =
      startRMRegistryOperations();
  describe(LOG, "testAnonReadAccess");
  RegistryOperations operations =
      RegistryOperationsFactory.createAnonymousInstance(zkClientConf);
  addToTeardown(operations);
  operations.start();

  assertFalse("RegistrySecurity.isClientSASLEnabled()==true",
      RegistrySecurity.isClientSASLEnabled());
  operations.list(PATH_SYSTEM_SERVICES);
}
Example 4
Source File: TestSecureRMRegistryOperations.java    From hadoop with Apache License 2.0 5 votes vote down vote up 
@Test
public void testAlicePathRestrictedAnonAccess() throws Throwable {
  RMRegistryOperationsService rmRegistryOperations =
      startRMRegistryOperations();
  String aliceHome = rmRegistryOperations.initUserRegistry(ALICE);
  describe(LOG, "Creating anonymous accessor");
  RegistryOperations anonOperations =
      RegistryOperationsFactory.createAnonymousInstance(zkClientConf);
  addToTeardown(anonOperations);
  anonOperations.start();
  anonOperations.list(aliceHome);
  expectMkNodeFailure(anonOperations, aliceHome + "/anon");
  expectDeleteFailure(anonOperations, aliceHome, true);
}
Example 5
Source File: TestSecureRMRegistryOperations.java    From big-c with Apache License 2.0 5 votes vote down vote up 
@Test
public void testAnonReadAccess() throws Throwable {
  RMRegistryOperationsService rmRegistryOperations =
      startRMRegistryOperations();
  describe(LOG, "testAnonReadAccess");
  RegistryOperations operations =
      RegistryOperationsFactory.createAnonymousInstance(zkClientConf);
  addToTeardown(operations);
  operations.start();

  assertFalse("RegistrySecurity.isClientSASLEnabled()==true",
      RegistrySecurity.isClientSASLEnabled());
  operations.list(PATH_SYSTEM_SERVICES);
}
Example 6
Source File: TestSecureRMRegistryOperations.java    From big-c with Apache License 2.0 5 votes vote down vote up 
@Test
public void testAlicePathRestrictedAnonAccess() throws Throwable {
  RMRegistryOperationsService rmRegistryOperations =
      startRMRegistryOperations();
  String aliceHome = rmRegistryOperations.initUserRegistry(ALICE);
  describe(LOG, "Creating anonymous accessor");
  RegistryOperations anonOperations =
      RegistryOperationsFactory.createAnonymousInstance(zkClientConf);
  addToTeardown(anonOperations);
  anonOperations.start();
  anonOperations.list(aliceHome);
  expectMkNodeFailure(anonOperations, aliceHome + "/anon");
  expectDeleteFailure(anonOperations, aliceHome, true);
}