Java Code Examples for org.apache.hadoop.security.UserGroupInformation#getLoginUser()

public static <T> T execute(final SecureExecutor.WorkLoad<T> workLoad) throws IOException
{
  if (UserGroupInformation.isSecurityEnabled()) {
    UserGroupInformation loginUser = UserGroupInformation.getLoginUser();
    return loginUser.doAs(new PrivilegedAction<T>()
    {
      @Override
      public T run()
      {
        return workLoad.run();
      }
    });
  } else {
    return workLoad.run();
  }
}
 

/**
 * Called after a new FileSystem instance is constructed.
 *
 * @param name a uri whose authority section names the host, port, etc. for this FileSystem
 * @param conf the configuration
 */
@Override
public void initialize(URI name, Configuration conf) throws IOException {
  UserGroupInformation ugi = UserGroupInformation.getCurrentUser();

  //the real use is the one that has the Kerberos credentials needed for
  //SPNEGO to work
  realUser = ugi.getRealUser();
  if (realUser == null) {
    realUser = UserGroupInformation.getLoginUser();
  }
  super.initialize(name, conf);
  try {
    uri = new URI(name.getScheme() + "://" + name.getAuthority());
  } catch (URISyntaxException ex) {
    throw new IOException(ex);
  }

  Class<? extends DelegationTokenAuthenticator> klass =
      getConf().getClass("httpfs.authenticator.class",
          KerberosDelegationTokenAuthenticator.class,
          DelegationTokenAuthenticator.class);
  DelegationTokenAuthenticator authenticator =
      ReflectionUtils.newInstance(klass, getConf());
  authURL = new DelegationTokenAuthenticatedURL(authenticator);
}
 

public static InterDatanodeProtocol createInterDataNodeProtocolProxy(
    DatanodeID datanodeid, final Configuration conf, final int socketTimeout,
    final boolean connectToDnViaHostname) throws IOException {
  final String dnAddr = datanodeid.getIpcAddr(connectToDnViaHostname);
  final InetSocketAddress addr = NetUtils.createSocketAddr(dnAddr);
  if (LOG.isDebugEnabled()) {
    LOG.debug("Connecting to datanode " + dnAddr + " addr=" + addr);
  }
  final UserGroupInformation loginUgi = UserGroupInformation.getLoginUser();
  try {
    return loginUgi
        .doAs(new PrivilegedExceptionAction<InterDatanodeProtocol>() {
          @Override
          public InterDatanodeProtocol run() throws IOException {
            return new InterDatanodeProtocolTranslatorPB(addr, loginUgi,
                conf, NetUtils.getDefaultSocketFactory(conf), socketTimeout);
          }
        });
  } catch (InterruptedException ie) {
    throw new IOException(ie.getMessage());
  }
}
 

public static FileSystem getFs(String krb5_conf, String principal, String keytab) throws Exception {
    if (fs != null) {
        return fs;
    } else {
        System.out.println("hdfs_site:" + Prop.getProperty("datasource.hdfs_xml_path"));
        System.out.println("core_site:" + Prop.getProperty("datasource.core_xml_path"));
        conf.addResource(new Path(Prop.getProperty("datasource.hdfs_xml_path")));
        conf.addResource(new Path(Prop.getProperty("datasource.core_xml_path")));
        conf.set("dfs.client.block.write.replace-datanode-on-failure.policy", "NEVER");
        conf.set("dfs.client.block.write.replace-datanode-on-failure.enable", "true");
        //conf.setBoolean("fs.hdfs.impl.disable.cache", true);
        if (StringUtils.isNotBlank(krb5_conf) && StringUtils.isNotBlank(principal) && StringUtils.isNotBlank(keytab)) {
            System.setProperty("java.security.krb5.conf", krb5_conf);
            UserGroupInformation.setConfiguration(conf);
            UserGroupInformation.loginUserFromKeytab(principal, keytab);
            UserGroupInformation.getLoginUser();
        }
        fs = FileSystem.get(conf);
        return fs;
    }
}
 

public int run(final String[] argv) throws IOException, InterruptedException {
  int val = -1;
  final Configuration conf = getConf();
  UserGroupInformation.setConfiguration(conf);
  UserGroupInformation ugi = UserGroupInformation.getLoginUser();

  val = ugi.doAs(new PrivilegedExceptionAction<Integer>() {
    public Integer run() throws Exception {
      return runJob(conf, argv);
    }
  });
  
  // print the gridmix summary if the run was successful
  if (val == 0) {
      // print the run summary
      System.out.print("\n\n");
      System.out.println(summarizer.toString());
  }
  
  return val; 
}
 

@Before
public void setUp() throws IOException {
    provider = new FakeUgiProvider();

    Configuration configuration = new Configuration();

    int l = 0;
    for (int i = 0; i < numberOfSegments; i++) {
        for (int j = 0; j < numberOfUsers; j++) {
            for (int k = 0; k < numberOfTxns; k++) {
                sessions[l++] = new SessionId(i, "txn-id-" + k, "the-user-" + j, "default", configuration, UserGroupInformation.getLoginUser());
            }
        }
    }
    fakeTicker = new FakeTicker();
    cache = new UGICache(provider, fakeTicker);
}
 

public void initHiveMetastoreClient() throws Exception {
  if (this.state.contains(ConfigurationKeys.SUPER_USER_KEY_TAB_LOCATION)) {
    String superUser = this.state.getProp(ComplianceConfigurationKeys.GOBBLIN_COMPLIANCE_SUPER_USER);
    String realm = this.state.getProp(ConfigurationKeys.KERBEROS_REALM);
    String keytabLocation = this.state.getProp(ConfigurationKeys.SUPER_USER_KEY_TAB_LOCATION);
    log.info("Establishing MetastoreClient connection using " + keytabLocation);

    UserGroupInformation.loginUserFromKeytab(HostUtils.getPrincipalUsingHostname(superUser, realm), keytabLocation);
    UserGroupInformation loginUser = UserGroupInformation.getLoginUser();
    loginUser.doAs(new PrivilegedExceptionAction<Void>() {
      @Override
      public Void run() throws TException {
        HivePurgerPublisher.this.client = new HiveMetaStoreClient(new HiveConf());
        return null;
      }
    });
  } else {
    HivePurgerPublisher.this.client = new HiveMetaStoreClient(new HiveConf());
  }
}
 

@Override
public Job call() throws IOException, InterruptedException,
                         ClassNotFoundException {
  UserGroupInformation ugi = UserGroupInformation.getLoginUser();
  ugi.doAs( new PrivilegedExceptionAction <Job>() {
     public Job run() throws IOException, ClassNotFoundException,
                             InterruptedException {
       // check if compression emulation is enabled
       if (CompressionEmulationUtil
           .isCompressionEmulationEnabled(job.getConfiguration())) {
         CompressionEmulationUtil.configure(job);
       } else {
         configureRandomBytesDataGenerator();
       }
       job.submit();
       return job;
     }
     
     private void configureRandomBytesDataGenerator() {
      job.setMapperClass(GenDataMapper.class);
      job.setNumReduceTasks(0);
      job.setMapOutputKeyClass(NullWritable.class);
      job.setMapOutputValueClass(BytesWritable.class);
      job.setInputFormatClass(GenDataFormat.class);
      job.setOutputFormatClass(RawBytesOutputFormat.class);
      job.setJarByClass(GenerateData.class);
      try {
        FileInputFormat.addInputPath(job, new Path("ignored"));
      } catch (IOException e) {
        LOG.error("Error while adding input path ", e);
      }
    }
  });
  return job;
}
 

public static ByteBuffer getTokens(StramDelegationTokenManager delegationTokenManager, InetSocketAddress heartbeatAddress) throws IOException
{
  if (UserGroupInformation.isSecurityEnabled()) {
    UserGroupInformation ugi = UserGroupInformation.getLoginUser();
    StramDelegationTokenIdentifier identifier = new StramDelegationTokenIdentifier(new Text(ugi.getUserName()), new Text(""), new Text(""));
    String service = heartbeatAddress.getAddress().getHostAddress() + ":" + heartbeatAddress.getPort();
    Token<StramDelegationTokenIdentifier> stramToken = new Token<>(identifier, delegationTokenManager);
    stramToken.setService(new Text(service));
    return getTokens(ugi, stramToken);
  }
  return null;
}
 

@Test
public void getTwoUGIsWithDifferentUsers() throws Exception {
    SessionId otherSession = new SessionId(0, "txn-id", "different-user", "default", new Configuration(), UserGroupInformation.getLoginUser());
    UserGroupInformation ugi1 = cache.getUserGroupInformation(session, false);
    UserGroupInformation ugi2 = cache.getUserGroupInformation(otherSession, false);
    assertNotEquals(ugi1, ugi2);
    verify(provider, times(1)).createRemoteUser(eq("the-user"), any(SessionId.class));
    verify(provider, times(1)).createRemoteUser(eq("different-user"), any(SessionId.class));
    assertCacheSize(2);
    assertStillInCache(session, ugi1);
    assertStillInCache(otherSession, ugi2);
}
 

@Override
protected void serviceStart() throws Exception {
  if (UserGroupInformation.isSecurityEnabled()) {
    loginUGI = UserGroupInformation.getLoginUser();
  } else {
    loginUGI = UserGroupInformation.getCurrentUser();
  }
  clientRpcServer.start();
}
 

private String getRenewerForToken(Token<RMDelegationTokenIdentifier> token)
    throws IOException {
  UserGroupInformation user = UserGroupInformation.getCurrentUser();
  UserGroupInformation loginUser = UserGroupInformation.getLoginUser();
  // we can always renew our own tokens
  return loginUser.getUserName().equals(user.getUserName())
      ? token.decodeIdentifier().getRenewer().toString()
      : user.getShortUserName();
}
 

private UserGroupInformation loginKerberosPrincipal(String krbKeytab, String krbPrincipal)
    throws Exception {
  Configuration cnf = new Configuration();
  cnf.set(CommonConfigurationKeys.HADOOP_SECURITY_AUTHENTICATION, "kerberos");
  UserGroupInformation.setConfiguration(cnf);
  UserGroupInformation.loginUserFromKeytab(krbPrincipal, krbKeytab);
  return UserGroupInformation.getLoginUser();
}
 

@Override
public void cancel(Token<?> t, Configuration config) throws IOException {
    Token<BrokerTokenIdentifier> token = (Token<BrokerTokenIdentifier>) t;
    BrokerTokenIdentifier tokenIdentifier = (BrokerTokenIdentifier) GcsDelegationTokens.extractIdentifier(token);
    UserGroupInformation loginUser = UserGroupInformation.getLoginUser();
    BrokerServerInfo serverInfo = Utils.getBrokerDetailsFromConfig(config);
    loginUser.doAs((PrivilegedAction<Void>) () -> {
        CancelSessionToken.submit(serverInfo, tokenIdentifier.getSessionToken());
        return null;
    });
}
 

/**
 * Return the {@link UserGroupInformation} of user who is running the SabotNode.
 *
 * @return SabotNode process user {@link UserGroupInformation}.
 */
public static UserGroupInformation getProcessUserUGI() {
  try {
    return UserGroupInformation.getLoginUser();
  } catch (IOException e) {
    final String errMsg = "Failed to get process user UserGroupInformation object.";
    logger.error(errMsg, e);
    throw new RuntimeException(errMsg, e);
  }
}
 

private void reloginExpiringKeytabUser() throws MetaException {
  if(UserGroupInformation.isSecurityEnabled()) {
    // renew the TGT if required
    try {
      UserGroupInformation ugi = UserGroupInformation.getLoginUser();
      if (ugi.isFromKeytab()) {
        ugi.checkTGTAndReloginFromKeytab();
      }
    } catch (IOException e) {
      final String msg = "Error doing relogin using keytab " + e.getMessage();
      logger.error(msg, e);
      throw new MetaException(msg);
    }
  }
}
 

@Override
public Job call() throws IOException, InterruptedException,
                         ClassNotFoundException {
  UserGroupInformation ugi = UserGroupInformation.getLoginUser();
  ugi.doAs( new PrivilegedExceptionAction <Job>() {
     public Job run() throws IOException, ClassNotFoundException,
                             InterruptedException {
       // check if compression emulation is enabled
       if (CompressionEmulationUtil
           .isCompressionEmulationEnabled(job.getConfiguration())) {
         CompressionEmulationUtil.configure(job);
       } else {
         configureRandomBytesDataGenerator();
       }
       job.submit();
       return job;
     }
     
     private void configureRandomBytesDataGenerator() {
      job.setMapperClass(GenDataMapper.class);
      job.setNumReduceTasks(0);
      job.setMapOutputKeyClass(NullWritable.class);
      job.setMapOutputValueClass(BytesWritable.class);
      job.setInputFormatClass(GenDataFormat.class);
      job.setOutputFormatClass(RawBytesOutputFormat.class);
      job.setJarByClass(GenerateData.class);
      try {
        FileInputFormat.addInputPath(job, new Path("ignored"));
      } catch (IOException e) {
        LOG.error("Error while adding input path ", e);
      }
    }
  });
  return job;
}
 

@Override
protected void checkRpcAdminAccess() throws IOException, AccessControlException {
  UserGroupInformation ugi = UserGroupInformation.getCurrentUser();
  UserGroupInformation zkfcUgi = UserGroupInformation.getLoginUser();
  if (adminAcl.isUserAllowed(ugi) ||
      ugi.getShortUserName().equals(zkfcUgi.getShortUserName())) {
    LOG.info("Allowed RPC access from " + ugi + " at " + Server.getRemoteAddress());
    return;
  }
  String msg = "Disallowed RPC access from " + ugi + " at " +
      Server.getRemoteAddress() + ". Not listed in " + DFSConfigKeys.DFS_ADMIN; 
  LOG.warn(msg);
  throw new AccessControlException(msg);
}
 

public static void setUGIFromJAASConfig(String jaasConfigAppName) throws Exception {
	String keytabFile 			= null;
	String principal  			= null;
	UserGroupInformation ugi 	= null;
	if (logger.isDebugEnabled()){
		logger.debug("===> MiscUtil.setUGIFromJAASConfig() jaasConfigAppName: " + jaasConfigAppName);
	}
	try {
		AppConfigurationEntry entries[] = Configuration.getConfiguration().getAppConfigurationEntry(jaasConfigAppName);
		if(!ArrayUtils.isEmpty(entries)) {
			for (AppConfigurationEntry entry : entries) {
				if (entry.getOptions().get("keyTab") != null) {
					keytabFile = (String) entry.getOptions().get("keyTab");
				}
				if (entry.getOptions().get("principal") != null) {
					principal = (String) entry.getOptions().get("principal");
				}
				if (!StringUtils.isEmpty(principal) && !StringUtils.isEmpty(keytabFile)) {
					break;
				}
			}
			if (!StringUtils.isEmpty(principal) && !StringUtils.isEmpty(keytabFile)) {
				// This will login and set the UGI
				UserGroupInformation.loginUserFromKeytab(principal, keytabFile);
				ugi = UserGroupInformation.getLoginUser();
			} else {
				String error_mesage = "Unable to get the principal/keytab from jaasConfigAppName: " + jaasConfigAppName;
				logger.error(error_mesage);
				throw new Exception(error_mesage);
			}
			logger.info("MiscUtil.setUGIFromJAASConfig() UGI: " + ugi + " principal: " + principal + " keytab: " + keytabFile);
		} else {
			logger.warn("JAASConfig file not found! Ranger Plugin will not working in a Secure Cluster...");
		}
	} catch ( Exception e) {
		logger.error("Unable to set UGI for Principal: " + principal + " keytab: " + keytabFile );
		throw e;
	}
	if (logger.isDebugEnabled()) {
		logger.debug("<=== MiscUtil.setUGIFromJAASConfig() jaasConfigAppName: " + jaasConfigAppName + " UGI: " + ugi + " principal: " + principal + " keytab: " + keytabFile);
	}
}
 

/**
 * Initializes UserGroupInformation with the given Configuration and returns UserGroupInformation.getLoginUser().
 * All logins should happen through this class to ensure other threads are not concurrently modifying
 * UserGroupInformation.
 *
 * @param config the configuration instance
 *
 * @return the UGI for the given principal
 *
 * @throws IOException if login failed
 */
public static synchronized UserGroupInformation loginSimple(final Configuration config) throws IOException {
    Validate.notNull(config);
    UserGroupInformation.setConfiguration(config);
    return UserGroupInformation.getLoginUser();
}