| /** |
| * 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.metron.rest.config; |
| |
| import org.apache.hadoop.security.UserGroupInformation; |
| import org.apache.metron.rest.MetronRestConstants; |
| import org.springframework.beans.factory.annotation.Autowired; |
| import org.springframework.context.annotation.Bean; |
| import org.springframework.context.annotation.Configuration; |
| import org.springframework.core.env.Environment; |
| |
| import java.io.IOException; |
| |
| @Configuration |
| public class HadoopConfig { |
| |
| private Environment environment; |
| |
| @Autowired |
| public HadoopConfig(Environment environment) { |
| this.environment = environment; |
| } |
| |
| @Bean |
| public org.apache.hadoop.conf.Configuration configuration() throws IOException { |
| org.apache.hadoop.conf.Configuration configuration = new org.apache.hadoop.conf.Configuration(); |
| if (environment.getProperty(MetronRestConstants.KERBEROS_ENABLED_SPRING_PROPERTY, Boolean.class, false)) { |
| setUGIConfiguration(configuration); |
| String keyTabLocation = environment.getProperty(MetronRestConstants.KERBEROS_KEYTAB_SPRING_PROPERTY); |
| String userPrincipal = environment.getProperty(MetronRestConstants.KERBEROS_PRINCIPLE_SPRING_PROPERTY); |
| loginUserFromKeytab(keyTabLocation, userPrincipal); |
| } |
| return configuration; |
| } |
| |
| // Exposed for testing |
| protected void setUGIConfiguration(org.apache.hadoop.conf.Configuration configuration) { |
| UserGroupInformation.setConfiguration(configuration); |
| } |
| |
| // Exposed for testing |
| protected void loginUserFromKeytab(String keyTabLocation, String userPrincipal) throws IOException { |
| UserGroupInformation.loginUserFromKeytab(userPrincipal, keyTabLocation); |
| } |
| } |