core/src/main/java/org/apache/oozie/coord/CoordUtils.java

/**
 * 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.oozie.coord;

import org.apache.hadoop.conf.Configuration;
import org.apache.oozie.client.OozieClient;
import org.apache.oozie.util.ParamChecker;
import org.jdom.Element;

public class CoordUtils {
    public static final String HADOOP_UGI = "hadoop.job.ugi";

    public static final String HADOOP_USER = "user.name";

    public static String getDoneFlag(Element doneFlagElement) {
        if (doneFlagElement != null) {
            return doneFlagElement.getTextTrim();
        }
        else {
            return CoordELConstants.DEFAULT_DONE_FLAG;
        }
    }

    public static Configuration getHadoopConf(Configuration jobConf) {
        Configuration conf = new Configuration();
        ParamChecker.notNull(jobConf, "Configuration to be used for hadoop setup ");
        String user = ParamChecker.notEmpty(jobConf.get(OozieClient.USER_NAME), OozieClient.USER_NAME);
        String group = ParamChecker.notEmpty(jobConf.get(OozieClient.GROUP_NAME), OozieClient.GROUP_NAME);
        conf.set(HADOOP_USER, user);
        conf.set(HADOOP_UGI, user + "," + group);
        return conf;
    }
}