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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 org.apache.hadoop.conf.Configuration;
021 import org.apache.hadoop.fs.FSDataOutputStream;
022 import org.apache.hadoop.fs.FileSystem;
023 import org.apache.hadoop.fs.Path;
024 import org.apache.oozie.action.ActionExecutorException;
025 import org.apache.oozie.util.XLog;
026 import org.jdom.Element;
027 import org.jdom.Namespace;
028
029 import java.io.IOException;
030 import java.util.List;
031
032 public abstract class ScriptLanguageActionExecutor extends JavaActionExecutor {
033
034 public ScriptLanguageActionExecutor(String type) {
035 super(type);
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 return classes;
044 }
045
046 @Override
047 protected Configuration setupLauncherConf(Configuration conf, Element actionXml, Path appPath, Context context)
048 throws ActionExecutorException {
049 super.setupLauncherConf(conf, actionXml, appPath, context);
050 Namespace ns = actionXml.getNamespace();
051 String script = actionXml.getChild("script", ns).getTextTrim();
052 String name = new Path(script).getName();
053 String scriptContent = context.getProtoActionConf().get(this.getScriptName());
054
055 Path scriptFile = null;
056 if (scriptContent != null) { // Create script on filesystem if this is
057 // an http submission job;
058 FSDataOutputStream dos = null;
059 try {
060 Path actionPath = context.getActionDir();
061 scriptFile = new Path(actionPath, script);
062 FileSystem fs = context.getAppFileSystem();
063 dos = fs.create(scriptFile);
064 dos.writeBytes(scriptContent);
065
066 addToCache(conf, actionPath, script + "#" + name, false);
067 }
068 catch (Exception ex) {
069 throw new ActionExecutorException(ActionExecutorException.ErrorType.ERROR, "FAILED_OPERATION", XLog
070 .format("Not able to write script file {0} on hdfs", scriptFile), ex);
071 }
072 finally {
073 try {
074 if (dos != null) {
075 dos.close();
076 }
077 }
078 catch (IOException ex) {
079 XLog.getLog(getClass()).error("Error: " + ex.getMessage());
080 }
081 }
082 }
083 else {
084 addToCache(conf, appPath, script + "#" + name, false);
085 }
086
087 return conf;
088 }
089
090 protected abstract String getScriptName();
091 }