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/**
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* '$RCSfile$'
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* Purpose: A Class that manages database access of scheduled task
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* information.
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* Copyright: 2009 Regents of the University of California and the
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* National Center for Ecological Analysis and Synthesis
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* Authors: Michael Daigle
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*
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* '$Author: daigle $'
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* '$Date: 2009-03-23 13:56:56 -0800 (Mon, 23 Mar 2009) $'
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* '$Revision: 4854 $'
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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package edu.ucsb.nceas.metacat.scheduler;
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import java.sql.PreparedStatement;
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import java.sql.ResultSet;
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import java.sql.SQLException;
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import java.sql.Timestamp;
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import java.util.Calendar;
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import java.util.HashMap;
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import java.util.Vector;
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import org.apache.log4j.Logger;
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import org.quartz.Job;
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import edu.ucsb.nceas.metacat.database.DBConnectionPool;
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import edu.ucsb.nceas.metacat.shared.AccessException;
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import edu.ucsb.nceas.metacat.shared.BaseAccess;
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import edu.ucsb.nceas.utilities.StatusUtil;
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public class ScheduledJobAccess extends BaseAccess {
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private Logger logMetacat = Logger.getLogger(ScheduledJobAccess.class);
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// Constructor
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public ScheduledJobAccess() throws AccessException {
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super("ScheduledJobAccess");
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}
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/**
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* Get a job based on it's id
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*
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* @param jobId
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* the id of the job in the database
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* @return the scheduled job data object that represents the desired job
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*/
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public ScheduledJobDAO getJob(Long jobId) throws AccessException {
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ScheduledJobDAO jobDAO = null;
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// first get the job from the db and put it into a DAO
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PreparedStatement pstmt = null;
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try {
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String sql = "SELECT * FROM scheduled_job WHERE id = ? AND status != 'deleted'";
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pstmt = conn.prepareStatement(sql);
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pstmt.setLong(1, jobId);
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logMetacat.info("SQL getJobByName - " + sql);
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logMetacat.info("SQL params: [" + jobId + "]");
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pstmt.execute();
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ResultSet resultSet = pstmt.getResultSet();
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if (resultSet.next()) {
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jobDAO = populateDAO(resultSet);
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}
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} catch (SQLException sqle) {
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throw new AccessException("ScheduledJobAccess.getJob - SQL error when getting scheduled job: "
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+ jobId + " : " + sqle.getMessage());
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} finally {
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try {
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if (pstmt != null) {
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pstmt.close();
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}
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} catch (SQLException sqle) {
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logMetacat.error("ScheduledJobAccess.getJobByName - An error occurred "
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+ "closing prepared statement: " + sqle.getMessage());
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}
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}
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// Now get all the job parameters and put those into a list of job parameter
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// DAOs and add that list to the job DAO
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ScheduledJobParamAccess jobParamAccess = new ScheduledJobParamAccess();
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Vector<ScheduledJobParamDAO> jobParamList =
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jobParamAccess.getJobParamsForJobId(jobDAO.getId());
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for(ScheduledJobParamDAO jobParamDAO : jobParamList) {
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jobDAO.addJobParam(jobParamDAO);
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}
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return jobDAO;
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}
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/**
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* Get a job by it's name
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* @param jobName the name of the job to get
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* @return the scheduled job data object that represents the desired job
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*/
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public ScheduledJobDAO getJobByName(String jobName) throws AccessException {
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ScheduledJobDAO jobDAO = null;
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// first get the job from the db and put it into a DAO
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PreparedStatement pstmt = null;
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try {
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String sql = "SELECT * FROM scheduled_job WHERE name = ? AND status != 'deleted'";
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pstmt = conn.prepareStatement(sql);
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pstmt.setString(1, jobName);
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logMetacat.info("SQL getJobByName - " + sql);
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logMetacat.info("SQL params: [" + jobName + "]");
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pstmt.execute();
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ResultSet resultSet = pstmt.getResultSet();
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if (resultSet.next()) {
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jobDAO = populateDAO(resultSet);
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}
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} catch (SQLException sqle) {
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throw new AccessException("ScheduledJobAccess.getJobByName - SQL error when getting scheduled job by name: "
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+ jobName + " : " + sqle.getMessage());
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} finally {
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try {
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if (pstmt != null) {
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pstmt.close();
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}
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} catch (SQLException sqle) {
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logMetacat.error("ScheduledJobAccess.getJobByName - An error occurred "
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+ "closing prepared statement: " + sqle.getMessage());
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}
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}
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// Now get all the job parameters and put those into a list of job parameter
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// DAOs and add that list to the job DAO
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ScheduledJobParamAccess jobParamAccess = new ScheduledJobParamAccess();
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Vector<ScheduledJobParamDAO> jobParamList =
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jobParamAccess.getJobParamsForJobId(jobDAO.getId());
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for(ScheduledJobParamDAO jobParamDAO : jobParamList) {
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jobDAO.addJobParam(jobParamDAO);
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}
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return jobDAO;
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}
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/**
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* Get all jobs that have a given parameter with a given value
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*
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* @param groupName
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* the group to which the job belongs. This keeps us from
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* returning unrelated jobs that just happen to have a similar
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* parameter
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* @param paramName
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* the name of the parameter we are looking for
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* @param paramValue
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* the value of the parameter we are looking for
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* @return a HashMap of job data objects with all jobs in a given group that
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* have parameters that match our parameter.
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*/
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public HashMap<Long, ScheduledJobDAO> getJobsWithParameter(String groupName, String paramName, String paramValue) throws AccessException {
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// first get all jobs
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HashMap<Long, ScheduledJobDAO> allJobsMap = getAllJobs(groupName);
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HashMap<Long, ScheduledJobDAO> jobsWithParamMap = new HashMap<Long, ScheduledJobDAO>();
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// then iterate through and grab the ones that have the desired parameter
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for (Long jobDAOId : allJobsMap.keySet()) {
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ScheduledJobDAO jobDAO = allJobsMap.get(jobDAOId);
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if (paramValue != null && paramName != null) {
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ScheduledJobParamDAO jobParamDAO = jobDAO.getJobParam(paramName);
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if(jobParamDAO != null && jobParamDAO.getValue().equals(paramValue)) {
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jobsWithParamMap.put(jobDAOId, jobDAO);
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}
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}
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}
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return jobsWithParamMap;
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}
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/**
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* Get all jobs for a given group. A group is typically a category that coincides with
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* the job type (has it's own job implementation).
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* @param groupName the name of the group we want to search
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* @return a HashMap of job data objects for the desired group.
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*/
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public HashMap<Long, ScheduledJobDAO> getAllJobs(String groupName) throws AccessException {
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ScheduledJobDAO jobDAO = null;
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HashMap<Long, ScheduledJobDAO> allJobDAOs = new HashMap<Long, ScheduledJobDAO>();
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// Get all jobs where the status is not deleted
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PreparedStatement pstmt = null;
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try {
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String sql = "SELECT * FROM scheduled_job WHERE status != 'deleted'";
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if (groupName != null) {
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sql += " AND group_name = ?" ;
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}
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pstmt = conn.prepareStatement(sql);
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String sqlReport = "ScheduledJobAccess.getAllJobs - SQL: " + sql;
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if (groupName != null) {
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pstmt.setString(1, groupName);
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sqlReport += " [" + groupName + "]";
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}
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logMetacat.info(sqlReport);
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pstmt.execute();
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ResultSet resultSet = pstmt.getResultSet();
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while (resultSet.next()) {
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jobDAO = populateDAO(resultSet);
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allJobDAOs.put(jobDAO.getId(), jobDAO);
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}
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// Here we grab all job params and put them into the associated jobs. THis
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// takes a little stress off the database by avoiding a join.
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ScheduledJobParamAccess jobParamAccess = new ScheduledJobParamAccess();
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Vector<ScheduledJobParamDAO> jobParamList =
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jobParamAccess.getAllJobParams();
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for(ScheduledJobParamDAO jobParamDAO : jobParamList) {
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Long jobId = jobParamDAO.getJobId();
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if( allJobDAOs.containsKey(jobId)) {
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allJobDAOs.get(jobId).addJobParam(jobParamDAO);
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}
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}
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return allJobDAOs;
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} catch (SQLException sqle) {
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throw new AccessException("ScheduledJobAccess.getJobByName - SQL error when getting all jobs : "
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+ sqle.getMessage());
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} finally {
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try {
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if (pstmt != null) {
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pstmt.close();
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}
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} catch (SQLException sqle) {
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logMetacat.error("ScheduledJobAccess.getJobByName - An error occurred "
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+ "closing prepared statement: " + sqle.getMessage());
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} finally {
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DBConnectionPool.returnDBConnection(conn, serialNumber);
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}
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}
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}
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/**
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* Create a job in the database.
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*
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* @param name
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* the name of the job. This should be unique
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* @param triggerName
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* the name of the trigger that is registered in the scheduler
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* service
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* @param groupName
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* the group of the job
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* @param jobClass
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* the class that implements the job functionality. The name of
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* this class will be extracted and put into the database.
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* @param startTime
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* the time when the job should first run
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* @param intervalValue
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* the amount of time between job runs.
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* @param intervalUnit
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* the unit of time that the intervalValue represents. Valid
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* values are s,m,h, d and w
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* @param jobParams
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* a map of parameters that are associated with this job.
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*/
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public void createJob(String name, String triggerName, String groupName,
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Class<Job> jobClass, Calendar startTime, Calendar endTime, int intervalValue,
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String intervalUnit, HashMap<String, String> jobParams)
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throws AccessException {
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// Create and populate a job data object
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ScheduledJobDAO jobDAO = new ScheduledJobDAO();
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jobDAO.setStatus(StatusUtil.SCHEDULED);
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jobDAO.setName(name);
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jobDAO.setTriggerName(name);
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jobDAO.setGroupName(groupName);
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jobDAO.setClassName(jobClass.getName());
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jobDAO.setStartTime(new Timestamp(startTime.getTimeInMillis()));
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jobDAO.setEndTime(new Timestamp(endTime.getTimeInMillis()));
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jobDAO.setIntervalValue(intervalValue);
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jobDAO.setIntervalUnit(intervalUnit);
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createJob(jobDAO, jobParams);
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}
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/**
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* Create a job in the database
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* @param jobDAO the job data object that holds necessary information
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* @param jobParams a map of parameters that are associated with this job.
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*/
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public void createJob(ScheduledJobDAO jobDAO, HashMap<String, String> jobParams) throws AccessException {
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PreparedStatement pstmt = null;
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// First insert the job
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try {
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String sql =
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"INSERT INTO scheduled_job (date_created, date_updated, status, name, trigger_name, group_name, class_name, start_time, end_time, interval_value, interval_unit) "
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+ "VALUES(now(), now(), ?, ?, ?, ?, ?, ?, ?, ?, ?)";
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pstmt = conn.prepareStatement(sql);
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pstmt.setString(1, jobDAO.getStatus());
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pstmt.setString(2, jobDAO.getName());
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pstmt.setString(3, jobDAO.getTriggerName());
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pstmt.setString(4, jobDAO.getGroupName());
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pstmt.setString(5, jobDAO.getClassName());
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pstmt.setTimestamp(6, jobDAO.getStartTime());
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pstmt.setTimestamp(7, jobDAO.getEndTime());
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pstmt.setInt(8, jobDAO.getIntervalValue());
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pstmt.setString(9, jobDAO.getIntervalUnit());
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String sqlReport = "ScheduledJobAccess.createJob - SQL: " + sql
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+ " [" + jobDAO.getStatus() + ","
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+ jobDAO.getName() + ","
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+ jobDAO.getTriggerName() + ","
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+ jobDAO.getGroupName() + ","
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+ jobDAO.getClassName() + ",(Timestamp)"
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+ jobDAO.getStartTime().toString() + ",";
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if(jobDAO.getEndTime() == null) {
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sqlReport += "null,";
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} else {
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sqlReport += jobDAO.getEndTime().toString() + ",";
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}
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sqlReport += jobDAO.getIntervalValue() + ","
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+ jobDAO.getIntervalUnit() + "]";
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logMetacat.info(sqlReport);
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pstmt.execute();
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} catch (SQLException sqle) {
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throw new AccessException("ScheduledJobAccess.createJob - SQL error when creating scheduled job "
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+ jobDAO.getName() + " : " + sqle.getMessage());
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} finally {
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try {
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if (pstmt != null) {
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pstmt.close();
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}
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} catch (SQLException sqle) {
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logMetacat.error("ScheduledJobAccess.createJob - An error occurred "
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+ "closing prepared statement: " + sqle.getMessage());
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} finally {
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DBConnectionPool.returnDBConnection(conn, serialNumber);
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}
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}
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// Then iterate through the job params and insert them into the db
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if (jobParams.size() > 0) {
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ScheduledJobParamAccess scheduledJobParamsAccess = null;
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ScheduledJobDAO updatedJobDAO = null;
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try {
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updatedJobDAO = getJobByName(jobDAO.getName());
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scheduledJobParamsAccess = new ScheduledJobParamAccess();
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scheduledJobParamsAccess.createJobParams(updatedJobDAO.getId(), jobParams);
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} catch (AccessException ae) {
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if (updatedJobDAO != null) {
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updatedJobDAO.setStatus(StatusUtil.DELETED);
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updateJobStatus(updatedJobDAO);
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scheduledJobParamsAccess.deleteJobParams(updatedJobDAO.getId());
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} else {
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logMetacat.warn("ScheduledJobAccess.createJob - Tried to delete non-existant scheduled job: "
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+ jobDAO.getName());
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}
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}
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}
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}
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/**
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* Update the status of a job in the database
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*
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* @param jobDAO
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* the job data object that we want to change. The status should
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* already have been updated in this object
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*/
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public void updateJobStatus(ScheduledJobDAO jobDAO) throws AccessException {
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if (jobDAO == null) {
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throw new AccessException("ScheduledJobAccess.updateJobStatus - job DAO cannot be null.");
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}
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PreparedStatement pstmt = null;
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405
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try {
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String sql = "UPDATE scheduled_job SET status = ? WHERE id = ?";
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pstmt = conn.prepareStatement(sql);
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pstmt.setString(1, jobDAO.getStatus());
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pstmt.setLong(2, jobDAO.getId());
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String sqlReport = "ScheduledJobAccess.deleteJob - SQL: " + sql
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+ " [" + jobDAO.getStatus() + "," + jobDAO.getId() + "]";
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logMetacat.info(sqlReport);
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pstmt.execute();
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} catch (SQLException sqle) {
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throw new AccessException("ScheduledJobAccess.deleteJob - SQL error when "
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+ "deleting scheduled job " + jobDAO.getName() + " : " + sqle.getMessage());
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} finally {
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try {
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423
|
if (pstmt != null) {
|
424
|
pstmt.close();
|
425
|
}
|
426
|
} catch (SQLException sqle) {
|
427
|
logMetacat.error("ScheduledJobAccess.updateJobStatus - An error occurred "
|
428
|
+ "closing prepared statement: " + sqle.getMessage());
|
429
|
} finally {
|
430
|
DBConnectionPool.returnDBConnection(conn, serialNumber);
|
431
|
}
|
432
|
}
|
433
|
|
434
|
}
|
435
|
|
436
|
/**
|
437
|
* Populate a job data object with the current row in a resultset
|
438
|
*
|
439
|
* @param resultSet
|
440
|
* the result set which is already pointing to the desired row.
|
441
|
* @return a scheduled job data object
|
442
|
*/
|
443
|
protected ScheduledJobDAO populateDAO(ResultSet resultSet) throws SQLException {
|
444
|
|
445
|
ScheduledJobDAO jobDAO = new ScheduledJobDAO();
|
446
|
jobDAO.setId(resultSet.getLong("id"));
|
447
|
jobDAO.setCreateTime(resultSet.getTimestamp("date_created"));
|
448
|
jobDAO.setModTime(resultSet.getTimestamp("date_updated"));
|
449
|
jobDAO.setStatus(resultSet.getString("status"));
|
450
|
jobDAO.setName(resultSet.getString("name"));
|
451
|
jobDAO.setTriggerName(resultSet.getString("trigger_name"));
|
452
|
jobDAO.setGroupName(resultSet.getString("group_name"));
|
453
|
jobDAO.setClassName(resultSet.getString("class_name"));
|
454
|
jobDAO.setStartTime(resultSet.getTimestamp("start_time"));
|
455
|
jobDAO.setEndTime(resultSet.getTimestamp("end_time"));
|
456
|
jobDAO.setIntervalValue(resultSet.getInt("interval_value"));
|
457
|
jobDAO.setIntervalUnit(resultSet.getString("interval_unit"));
|
458
|
|
459
|
return jobDAO;
|
460
|
}
|
461
|
|
462
|
}
|