001    /**
002     * Copyright (c) 2010 Yahoo! Inc. All rights reserved.
003     * Licensed under the Apache License, Version 2.0 (the "License");
004     * you may not use this file except in compliance with the License.
005     * You may obtain a copy of the License at
006     *
007     *   http://www.apache.org/licenses/LICENSE-2.0
008     *
009     *  Unless required by applicable law or agreed to in writing, software
010     *  distributed under the License is distributed on an "AS IS" BASIS,
011     *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
012     *  See the License for the specific language governing permissions and
013     *  limitations under the License. See accompanying LICENSE file.
014     */
015    package org.apache.oozie.command.wf;
016    
017    import java.util.List;
018    import java.util.Map;
019    
020    import org.apache.oozie.ErrorCode;
021    import org.apache.oozie.WorkflowJobBean;
022    import org.apache.oozie.WorkflowsInfo;
023    import org.apache.oozie.command.CommandException;
024    import org.apache.oozie.command.PreconditionException;
025    import org.apache.oozie.executor.jpa.WorkflowsJobGetJPAExecutor;
026    import org.apache.oozie.service.JPAService;
027    import org.apache.oozie.service.Services;
028    
029    public class JobsXCommand extends WorkflowXCommand<WorkflowsInfo> {
030        private final Map<String, List<String>> filter;
031        private final int start;
032        private final int len;
033        private WorkflowsInfo workflows;
034    
035        /**
036         * Constructor taking the filter information
037         *
038         * @param filter Can be name, status, user, group and combination of these
039         * @param start starting from this index in the list of workflows matching the filter are returned
040         * @param length number of workflows to be returned from the list of workflows matching the filter and starting from
041         *        index "start".
042         */
043        public JobsXCommand(Map<String, List<String>> filter, int start, int length) {
044            super("job.info", "job.info", 1, true);
045            this.filter = filter;
046            this.start = start;
047            this.len = length;
048        }
049    
050        /* (non-Javadoc)
051         * @see org.apache.oozie.command.XCommand#execute()
052         */
053        @Override
054        protected WorkflowsInfo execute() throws CommandException {
055            try {
056                JPAService jpaService = Services.get().get(JPAService.class);
057                if (jpaService != null) {
058                    this.workflows = jpaService.execute(new WorkflowsJobGetJPAExecutor(this.filter, this.start, this.len));
059                }
060                else {
061                    throw new CommandException(ErrorCode.E0610);
062                }
063                for (WorkflowJobBean workflow : this.workflows.getWorkflows()) {
064                    workflow.setConsoleUrl(JobCommand.getJobConsoleUrl(workflow.getId()));
065                }
066                return this.workflows;
067            }
068            catch (Exception ex) {
069                throw new CommandException(ErrorCode.E0603, ex);
070            }
071        }
072    
073        /* (non-Javadoc)
074         * @see org.apache.oozie.command.XCommand#getEntityKey()
075         */
076        @Override
077        protected String getEntityKey() {
078            return null;
079        }
080    
081        /* (non-Javadoc)
082         * @see org.apache.oozie.command.XCommand#isLockRequired()
083         */
084        @Override
085        protected boolean isLockRequired() {
086            return false;
087        }
088    
089        /* (non-Javadoc)
090         * @see org.apache.oozie.command.XCommand#loadState()
091         */
092        @Override
093        protected void loadState() throws CommandException {
094        }
095    
096        /* (non-Javadoc)
097         * @see org.apache.oozie.command.XCommand#verifyPrecondition()
098         */
099        @Override
100        protected void verifyPrecondition() throws CommandException, PreconditionException {
101        }
102    }