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     */
018    package org.apache.oozie.action.hadoop;
019    
020    import static org.apache.oozie.action.hadoop.LauncherMapper.CONF_OOZIE_ACTION_MAIN_CLASS;
021    
022    import java.util.List;
023    
024    import org.apache.hadoop.conf.Configuration;
025    import org.apache.hadoop.fs.Path;
026    import org.apache.oozie.action.ActionExecutorException;
027    import org.apache.oozie.client.WorkflowAction;
028    import org.jdom.Element;
029    import org.jdom.JDOMException;
030    import org.jdom.Namespace;
031    
032    public class HiveActionExecutor extends JavaActionExecutor {
033    
034        public HiveActionExecutor() {
035            super("hive");
036        }
037    
038        @Override
039        protected List<Class> getLauncherClasses() {
040            List<Class> classes = super.getLauncherClasses();
041            classes.add(LauncherMain.class);
042            classes.add(MapReduceMain.class);
043            classes.add(HiveMain.class);
044            return classes;
045        }
046    
047        @Override
048        protected String getLauncherMain(Configuration launcherConf, Element actionXml) {
049            return launcherConf.get(CONF_OOZIE_ACTION_MAIN_CLASS, HiveMain.class.getName());
050        }
051    
052        @Override
053        protected Configuration setupLauncherConf(Configuration conf, Element actionXml, Path appPath, Context context)
054                throws ActionExecutorException {
055            try {
056                super.setupLauncherConf(conf, actionXml, appPath, context);
057                Namespace ns = actionXml.getNamespace();
058    
059                String script = actionXml.getChild("script", ns).getTextTrim();
060                String scriptName = new Path(script).getName();
061                addToCache(conf, appPath, script + "#" + scriptName, false);
062                return conf;
063            }
064            catch (Exception ex) {
065                throw convertException(ex);
066            }
067        }
068    
069        @Override
070        @SuppressWarnings("unchecked")
071        Configuration setupActionConf(Configuration actionConf, Context context, Element actionXml,
072                                      Path appPath) throws ActionExecutorException {
073            Configuration conf = super.setupActionConf(actionConf, context, actionXml, appPath);
074    
075            Namespace ns = actionXml.getNamespace();
076            String script = actionXml.getChild("script", ns).getTextTrim();
077            String scriptName = new Path(script).getName();
078            addToCache(conf, appPath, script + "#" + scriptName, false);
079    
080            List<Element> params = (List<Element>) actionXml.getChildren("param", ns);
081            String[] strParams = new String[params.size()];
082            for (int i = 0; i < params.size(); i++) {
083                strParams[i] = params.get(i).getTextTrim();
084            }
085    
086            HiveMain.setHiveScript(conf, scriptName, strParams);
087            return conf;
088        }
089    
090        @Override
091        protected boolean getCaptureOutput(WorkflowAction action) throws JDOMException {
092            return true;
093        }
094    
095        /**
096         * Return the sharelib name for the action.
097         *
098         * @return returns <code>hive</code>.
099         * @param actionXml
100         */
101        @Override
102        protected String getDefaultShareLibName(Element actionXml) {
103            return "hive";
104        }
105    
106    }