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annotate software/eXist/mpdl-modules/src/de/mpg/mpiwg/berlin/mpdl/schedule/MpdlChainScheduler.java @ 0:408254cf2f1d

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Erstellung
author Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
date Wed, 24 Nov 2010 17:24:23 +0100
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Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
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1 package de.mpg.mpiwg.berlin.mpdl.schedule;
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2
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3 import java.net.URL;
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4 import java.util.ArrayList;
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5 import java.util.Collection;
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6 import java.util.Date;
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7 import java.util.HashMap;
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8 import java.util.Iterator;
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9 import java.util.List;
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10 import java.util.PriorityQueue;
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11 import java.util.Queue;
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12
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13 import org.apache.log4j.Logger;
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14 import org.quartz.JobDataMap;
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15 import org.quartz.JobDetail;
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16 import org.quartz.JobExecutionContext;
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17 import org.quartz.JobListener;
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18 import org.quartz.SchedulerException;
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19 import org.quartz.SimpleTrigger;
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20 import org.quartz.Trigger;
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21 import org.quartz.impl.StdSchedulerFactory;
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22
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23 import de.mpg.mpiwg.berlin.mpdl.exception.ApplicationException;
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24
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25 public class MpdlChainScheduler {
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26 private static MpdlChainScheduler instance;
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27 private static String CRUD_JOB = "MPDL_CRUD_JOB";
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28 private static String CRUD_TRIGGER = "MPDL_CRUD_TRIGGER";
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29 private static String CRUD_GROUP = "MPDL_CRUD_GROUP";
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30 private static Logger LOGGER = Logger.getLogger(MpdlChainScheduler.class); // Logs to EXIST_HOME/webapp/WEB-INF/logs/exist.log
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31 private org.quartz.Scheduler scheduler;
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32 private JobListener jobListener;
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33 private Queue<MpdlDocOperation> docOperationQueue = new PriorityQueue<MpdlDocOperation>();
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34 private HashMap<Integer, MpdlDocOperation> finishedDocOperations = new HashMap<Integer, MpdlDocOperation>();
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35 private boolean operationInProgress = false;
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36 private int jobOrderId = 0;
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37
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38 public static MpdlChainScheduler getInstance() throws ApplicationException {
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39 if (instance == null) {
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40 instance = new MpdlChainScheduler();
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41 instance.init();
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42 }
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43 return instance;
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44 }
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45
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46 public MpdlDocOperation doOperation(MpdlDocOperation docOperation) throws ApplicationException {
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47 jobOrderId++;
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48 docOperation.setOrderId(jobOrderId);
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49 queueOperation(docOperation);
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50 scheduleNextOperation();
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51 return docOperation;
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52 }
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53
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54 public void finishOperation(MpdlDocOperation docOperation) throws ApplicationException {
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55 operationInProgress = false;
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56 Date now = new Date();
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57 docOperation.setEnd(now);
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58 docOperation.setStatus("finished");
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59 int jobId = new Integer(docOperation.getOrderId());
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60 finishedDocOperations.put(jobId, docOperation);
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61 log(docOperation);
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62 // schedule next job if there is one
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63 scheduleNextOperation();
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64 }
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65
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66 private void log(MpdlDocOperation docOperation) {
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67 Date startTime = docOperation.getStart();
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68 Date endTime = docOperation.getEnd();
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69 long executionTime = -1;
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70 if (startTime != null && endTime != null)
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71 executionTime = (endTime.getTime() - startTime.getTime());
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72 String jobInfo = "MPDL: Document operation " + docOperation.toString() + ": started at: " + startTime +
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73 " and ended at: " + endTime + " (needed time: " + executionTime + " ms)";
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74 LOGGER.info(jobInfo);
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75 }
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76
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77 public synchronized void scheduleNextOperation() throws ApplicationException {
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78 if (isOperationInProgress()) {
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79 // nothing, operation has to wait
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80 } else {
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81 MpdlDocOperation docOperation = docOperationQueue.poll();
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82 if (docOperation == null) {
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83 // if queue is empty then do nothing (there are no more operations to execute)
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84 } else {
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85 Date now = new Date();
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86 operationInProgress = true;
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87 docOperation.setStart(now);
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88 scheduleJob(docOperation, now);
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89 }
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90 }
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91 }
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92
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93 public ArrayList<MpdlDocOperation> getDocOperations() throws ApplicationException {
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94 ArrayList<MpdlDocOperation> docOperations = new ArrayList<MpdlDocOperation>();
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95 try {
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96 // first: all finished jobs
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97 Collection<MpdlDocOperation> finiDocOperations = finishedDocOperations.values();
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98 docOperations.addAll(finiDocOperations);
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99 // second: all currently executed jobs
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100 if (operationInProgress) {
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101 List<JobExecutionContext> currentJobs = (List<JobExecutionContext>) scheduler.getCurrentlyExecutingJobs();
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102 Iterator<JobExecutionContext> iter = currentJobs.iterator();
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103 while (iter.hasNext()) {
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104 JobExecutionContext jobExecutionContext = iter.next();
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105 MpdlDocOperation docOperation = getDocOperation(jobExecutionContext);
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106 if (docOperation != null) {
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107 docOperations.add(docOperation);
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108 }
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109 }
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110 }
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111 // third: all queued jobs
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112 Iterator<MpdlDocOperation> iter = docOperationQueue.iterator();
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113 while (iter.hasNext()) {
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114 MpdlDocOperation docOperation = iter.next();
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115 docOperations.add(docOperation);
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116 }
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117 } catch (SchedulerException e) {
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118 LOGGER.error(e.getMessage());
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119 throw new ApplicationException(e);
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120 }
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121 return docOperations;
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122 }
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123
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124 public MpdlDocOperation getDocOperation(int jobId) throws ApplicationException {
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125 MpdlDocOperation docOperation = null;
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126 try {
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127 // first try: looks into currently executing jobs
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128 if (operationInProgress) {
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129 List<JobExecutionContext> currentJobs = (List<JobExecutionContext>) scheduler.getCurrentlyExecutingJobs();
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130 Iterator<JobExecutionContext> iter = currentJobs.iterator();
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131 while (iter.hasNext()) {
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132 JobExecutionContext jobExecutionContext = iter.next();
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133 docOperation = getDocOperation(jobExecutionContext);
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134 if (docOperation != null) {
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135 int dopOpJobId = docOperation.getOrderId();
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136 if (jobId == dopOpJobId)
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137 return docOperation;
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138 }
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Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
139 }
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Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
140 }
408254cf2f1d Erstellung
Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
141 // second try: look into finished jobs
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Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
142 docOperation = finishedDocOperations.get(new Integer(jobId));
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Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
143 if (docOperation != null) {
408254cf2f1d Erstellung
Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
144 return docOperation;
408254cf2f1d Erstellung
Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
145 }
408254cf2f1d Erstellung
Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
146 // third try: look into queued jobs
408254cf2f1d Erstellung
Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
147 Iterator<MpdlDocOperation> iter = docOperationQueue.iterator();
408254cf2f1d Erstellung
Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
148 while (iter.hasNext()) {
408254cf2f1d Erstellung
Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
149 docOperation = iter.next();
408254cf2f1d Erstellung
Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
150 if (docOperation.getOrderId() == jobId)
408254cf2f1d Erstellung
Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
151 return docOperation;
408254cf2f1d Erstellung
Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
152 }
408254cf2f1d Erstellung
Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
153 } catch (SchedulerException e) {
408254cf2f1d Erstellung
Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
154 LOGGER.error(e.getMessage());
408254cf2f1d Erstellung
Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
155 throw new ApplicationException(e);
408254cf2f1d Erstellung
Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
156 }
408254cf2f1d Erstellung
Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
157 // if not found return null
408254cf2f1d Erstellung
Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
158 return null;
408254cf2f1d Erstellung
Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
159 }
408254cf2f1d Erstellung
Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
160
408254cf2f1d Erstellung
Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
161 public MpdlDocOperation getDocOperation(JobExecutionContext jobExecutionContext) {
408254cf2f1d Erstellung
Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
162 MpdlDocOperation docOperation = null;
408254cf2f1d Erstellung
Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
163 if (jobExecutionContext != null) {
408254cf2f1d Erstellung
Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
164 JobDetail job = jobExecutionContext.getJobDetail();
408254cf2f1d Erstellung
Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
165 JobDataMap parameters = job.getJobDataMap();
408254cf2f1d Erstellung
Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
166 docOperation = (MpdlDocOperation) parameters.get("operation");
408254cf2f1d Erstellung
Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
167 }
408254cf2f1d Erstellung
Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
168 return docOperation;
408254cf2f1d Erstellung
Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
169 }
408254cf2f1d Erstellung
Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
170
408254cf2f1d Erstellung
Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
171 private void queueOperation(MpdlDocOperation docOperation) {
408254cf2f1d Erstellung
Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
172 int operationsBefore = docOperationQueue.size();
408254cf2f1d Erstellung
Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
173 if (operationsBefore == 0)
408254cf2f1d Erstellung
Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
174 docOperation.setStatus("waiting in operation queue");
408254cf2f1d Erstellung
Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
175 else
408254cf2f1d Erstellung
Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
176 docOperation.setStatus("waiting in operation queue: " + operationsBefore + " operations heve to be executed before this operation");
408254cf2f1d Erstellung
Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
177 docOperationQueue.offer(docOperation);
408254cf2f1d Erstellung
Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
178 }
408254cf2f1d Erstellung
Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
179
408254cf2f1d Erstellung
Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
180 private synchronized boolean isOperationInProgress() {
408254cf2f1d Erstellung
Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
181 return operationInProgress;
408254cf2f1d Erstellung
Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
182 }
408254cf2f1d Erstellung
Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
183
408254cf2f1d Erstellung
Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
184 private void scheduleJob(MpdlDocOperation docOperation, Date fireTime) throws ApplicationException {
408254cf2f1d Erstellung
Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
185 try {
408254cf2f1d Erstellung
Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
186 int jobId = docOperation.getOrderId();
408254cf2f1d Erstellung
Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
187 String jobName = CRUD_JOB + "-id-" + jobId + "-timeId-" + fireTime;
408254cf2f1d Erstellung
Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
188 JobDetail job = new JobDetail(jobName, CRUD_GROUP, MpdlDocJob.class);
408254cf2f1d Erstellung
Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
189 JobDataMap parameters = new JobDataMap();
408254cf2f1d Erstellung
Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
190 parameters.put("operation", docOperation);
408254cf2f1d Erstellung
Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
191 job.setJobDataMap(parameters);
408254cf2f1d Erstellung
Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
192 job.addJobListener(jobListener.getName());
408254cf2f1d Erstellung
Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
193 String triggerName = CRUD_TRIGGER + "-id-" + jobId + "-timeId-" + fireTime;
408254cf2f1d Erstellung
Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
194 Trigger trigger = new SimpleTrigger(triggerName, CRUD_GROUP, fireTime);
408254cf2f1d Erstellung
Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
195 scheduler.scheduleJob(job, trigger);
408254cf2f1d Erstellung
Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
196 String jobInfo = "MPDL: Schedule document operation: " + docOperation.toString() + ": done at: " + fireTime.toString();
408254cf2f1d Erstellung
Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
197 LOGGER.info(jobInfo);
408254cf2f1d Erstellung
Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
198 } catch (SchedulerException e) {
408254cf2f1d Erstellung
Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
199 LOGGER.error(e.getMessage());
408254cf2f1d Erstellung
Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
200 throw new ApplicationException(e);
408254cf2f1d Erstellung
Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
201 }
408254cf2f1d Erstellung
Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
202 }
408254cf2f1d Erstellung
Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
203
408254cf2f1d Erstellung
Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
204 private void init() throws ApplicationException {
408254cf2f1d Erstellung
Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
205 try {
408254cf2f1d Erstellung
Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
206 if (scheduler == null) {
408254cf2f1d Erstellung
Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
207 String quartzPath = getQuartzPath();
408254cf2f1d Erstellung
Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
208 StdSchedulerFactory schedulerFactory = new StdSchedulerFactory(quartzPath);
408254cf2f1d Erstellung
Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
209 scheduler = schedulerFactory.getScheduler();
408254cf2f1d Erstellung
Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
210 jobListener = new MpdlChainSchedulerListener();
408254cf2f1d Erstellung
Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
211 scheduler.addJobListener(jobListener);
408254cf2f1d Erstellung
Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
212 scheduler.start();
408254cf2f1d Erstellung
Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
213 LOGGER.info("MPDL: Started Quartz scheduler factory: " + quartzPath);
408254cf2f1d Erstellung
Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
214 }
408254cf2f1d Erstellung
Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
215 } catch (SchedulerException e) {
408254cf2f1d Erstellung
Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
216 LOGGER.error(e.getMessage());
408254cf2f1d Erstellung
Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
217 throw new ApplicationException(e);
408254cf2f1d Erstellung
Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
218 }
408254cf2f1d Erstellung
Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
219 }
408254cf2f1d Erstellung
Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
220
408254cf2f1d Erstellung
Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
221 public void end() throws ApplicationException {
408254cf2f1d Erstellung
Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
222 try {
408254cf2f1d Erstellung
Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
223 if (scheduler != null) {
408254cf2f1d Erstellung
Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
224 scheduler.shutdown();
408254cf2f1d Erstellung
Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
225 }
408254cf2f1d Erstellung
Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
226 String quartzPath = getQuartzPath();
408254cf2f1d Erstellung
Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
227 LOGGER.info("MPDL: Ended Quartz scheduler factory: " + quartzPath);
408254cf2f1d Erstellung
Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
228 } catch (SchedulerException e) {
408254cf2f1d Erstellung
Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
229 LOGGER.error(e.getMessage());
408254cf2f1d Erstellung
Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
230 throw new ApplicationException(e);
408254cf2f1d Erstellung
Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
231 }
408254cf2f1d Erstellung
Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
232 }
408254cf2f1d Erstellung
Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
233
408254cf2f1d Erstellung
Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
234 private String getQuartzPath() {
408254cf2f1d Erstellung
Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
235 URL quartzUrl = MpdlChainScheduler.class.getResource("quartz.properties");
408254cf2f1d Erstellung
Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
236 String quartzPath = quartzUrl.getPath();
408254cf2f1d Erstellung
Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
237 if (quartzPath.indexOf(".jar!") != -1) {
408254cf2f1d Erstellung
Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
238 int beginIndex = quartzPath.indexOf(".jar!") + 6;
408254cf2f1d Erstellung
Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
239 quartzPath = quartzPath.substring(beginIndex);
408254cf2f1d Erstellung
Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
240 }
408254cf2f1d Erstellung
Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
241 return quartzPath;
408254cf2f1d Erstellung
Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
242 }
408254cf2f1d Erstellung
Josef Willenborg <jwillenborg@mpiwg-berlin.mpg.de>
parents:
diff changeset
243 }