| /** |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package org.apache.falcon.regression.core.util; |
| |
| import org.apache.falcon.regression.core.enumsAndConstants.MerlinConstants; |
| import org.testng.Assert; |
| import org.apache.log4j.Logger; |
| |
| /** |
| * Util methods for Kerberos. |
| */ |
| public final class KerberosHelper { |
| private KerberosHelper() { |
| throw new AssertionError("Instantiating utility class..."); |
| } |
| |
| private static final Logger LOGGER = Logger.getLogger(KerberosHelper.class); |
| |
| public static void loginFromKeytab(String user) { |
| if (!MerlinConstants.IS_SECURE) { |
| LOGGER.info("Kerberos is disabled, hence no user switching."); |
| return; |
| } |
| if (user == null) { |
| user = MerlinConstants.CURRENT_USER_NAME; |
| } |
| final String keytab = MerlinConstants.getKeytabForUser(user); |
| final String command = String.format("kinit -kt %s %s", keytab, user); |
| final int exitVal = ExecUtil.executeCommandGetExitCode(command); |
| Assert.assertEquals(exitVal, 0, "Switching Kerberos credential did not succeed."); |
| } |
| |
| } |