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