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
019package org.apache.oozie.workflow.lite;
020
021
022import org.apache.oozie.workflow.WorkflowApp;
023import org.apache.oozie.workflow.WorkflowException;
024import org.apache.oozie.workflow.WorkflowInstance;
025import org.apache.oozie.workflow.WorkflowLib;
026import org.apache.oozie.service.Services;
027import org.apache.oozie.service.UUIDService;
028import org.apache.oozie.service.UUIDService.ApplicationType;
029import org.apache.oozie.util.ParamChecker;
030import org.apache.hadoop.conf.Configuration;
031
032import javax.xml.validation.Schema;
033import java.io.StringReader;
034import java.util.Date;
035import java.util.Map;
036
037//TODO javadoc
038public abstract class LiteWorkflowLib implements WorkflowLib {
039    private Schema schema;
040    private Class<? extends ControlNodeHandler> controlHandlerClass;
041    private Class<? extends DecisionNodeHandler> decisionHandlerClass;
042    private Class<? extends ActionNodeHandler> actionHandlerClass;
043
044    public LiteWorkflowLib(Schema schema,
045                           Class<? extends ControlNodeHandler> controlNodeHandler,
046                           Class<? extends DecisionNodeHandler> decisionHandlerClass,
047                           Class<? extends ActionNodeHandler> actionHandlerClass) {
048        this.schema = schema;
049        this.controlHandlerClass = controlNodeHandler;
050        this.decisionHandlerClass = decisionHandlerClass;
051        this.actionHandlerClass = actionHandlerClass;
052    }
053
054    @Override
055    public WorkflowApp parseDef(String appXml, Configuration jobConf, Configuration configDefault) throws WorkflowException {
056        ParamChecker.notEmpty(appXml, "appXml");
057        return new LiteWorkflowAppParser(schema, controlHandlerClass, decisionHandlerClass, actionHandlerClass)
058                .validateAndParse(new StringReader(appXml), jobConf, configDefault);
059    }
060
061    @Override
062    public WorkflowInstance createInstance(WorkflowApp app, Configuration conf) throws WorkflowException {
063        ParamChecker.notNull(app, "app");
064        String jobId = Services.get().get(UUIDService.class).generateId(ApplicationType.WORKFLOW);
065        return new LiteWorkflowInstance((LiteWorkflowApp) app, conf, jobId);
066    }
067
068    @Override
069    public WorkflowInstance createInstance(WorkflowApp app, Configuration conf, String wfId)
070            throws WorkflowException {
071        ParamChecker.notNull(app, "app");
072        ParamChecker.notNull(wfId, "wfId");
073        return new LiteWorkflowInstance((LiteWorkflowApp) app, conf, wfId);
074    }
075}