001/** 002 * Licensed to the Apache Software Foundation (ASF) under one 003 * or more contributor license agreements. See the NOTICE file 004 * distributed with this work for additional information 005 * regarding copyright ownership. The ASF licenses this file 006 * to you under the Apache License, Version 2.0 (the 007 * "License"); you may not use this file except in compliance 008 * with the License. You may obtain a copy of the License at 009 * 010 * http://www.apache.org/licenses/LICENSE-2.0 011 * 012 * Unless required by applicable law or agreed to in writing, software 013 * distributed under the License is distributed on an "AS IS" BASIS, 014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 015 * See the License for the specific language governing permissions and 016 * limitations under the License. 017 */ 018package org.apache.oozie.action.hadoop; 019 020import java.io.IOException; 021import java.util.Map; 022 023import org.apache.hadoop.conf.Configuration; 024import org.apache.hadoop.hbase.HBaseConfiguration; 025import org.apache.hadoop.hbase.security.User; 026import org.apache.hadoop.mapred.JobConf; 027import org.apache.oozie.action.ActionExecutor.Context; 028import org.apache.oozie.action.hadoop.Credentials; 029import org.apache.oozie.action.hadoop.CredentialsProperties; 030import org.apache.oozie.util.XLog; 031import org.apache.hadoop.security.UserGroupInformation; 032 033 034/** 035 * Hbase Credentials implementation to store in jobConf 036 * The jobConf is used further to pass credentials to the tasks while running 037 * Oozie server should be configured to use this Credentials class by including it via property 'oozie.credentials.credentialclasses' 038 * 039 */ 040public class HbaseCredentials extends Credentials { 041 042 043 /* (non-Javadoc) 044 * @see org.apache.oozie.action.hadoop.Credentials#addtoJobConf(org.apache.hadoop.mapred.JobConf, org.apache.oozie.action.hadoop.CredentialsProperties, org.apache.oozie.action.ActionExecutor.Context) 045 */ 046 @Override 047 public void addtoJobConf(JobConf jobConf, CredentialsProperties props, Context context) throws Exception { 048 try { 049 copyHbaseConfToJobConf(jobConf, props); 050 obtainToken(jobConf, context); 051 } 052 catch (Exception e) { 053 XLog.getLog(getClass()).warn("Exception in receiving hbase credentials", e); 054 throw e; 055 } 056 } 057 058 void copyHbaseConfToJobConf(JobConf jobConf, CredentialsProperties props) { 059 // Create configuration using hbase-site.xml/hbase-default.xml 060 Configuration hbaseConf = HBaseConfiguration.create(); 061 // copy cred props to hbaseconf and override if values already exists 062 addPropsConf(props, hbaseConf); 063 // copy cred props to jobconf and override if values already exist 064 addPropsConf(props, jobConf); 065 // copy conf from hbaseConf to jobConf without overriding the 066 // already existing values of jobConf 067 injectConf(hbaseConf, jobConf); 068 } 069 070 private void obtainToken(JobConf jobConf, Context context) throws IOException, InterruptedException { 071 String user = context.getWorkflow().getUser(); 072 UserGroupInformation ugi = UserGroupInformation.createProxyUser(user, UserGroupInformation.getLoginUser()); 073 User u = User.create(ugi); 074 u.obtainAuthTokenForJob(jobConf); 075 } 076 077 private void addPropsConf(CredentialsProperties props, Configuration destConf) { 078 for (Map.Entry<String, String> entry : props.getProperties().entrySet()) { 079 destConf.set(entry.getKey(), entry.getValue()); 080 } 081 } 082 083 private void injectConf(Configuration srcConf, Configuration destConf) { 084 for (Map.Entry<String, String> entry : srcConf) { 085 String name = entry.getKey(); 086 if (destConf.get(name) == null) { 087 String value = entry.getValue(); 088 destConf.set(name, value); 089 } 090 } 091 } 092}