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1 package alice.topology.manager.keeparive;
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2
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3 import alice.codesegment.CodeSegment;
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4 import alice.datasegment.CommandType;
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5 import alice.datasegment.DataSegment;
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6 import alice.datasegment.Receiver;
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7
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8 public class TaskExecuter extends CodeSegment {
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9 private Receiver info = ids.create(CommandType.TAKE);
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10 private TaskInfo nowTask;
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11 private boolean skipFlag = false;
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12 private long startTime = 0;
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13 private long remainingTime = 0;
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14 private static TaskExecuter instance = new TaskExecuter();
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15
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16 private TaskExecuter() {}
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17 public static TaskExecuter getInstance() {
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18 return instance;
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19 }
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20
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21 public void setKey() {
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22 ids.init();
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23 info.setKey("_WAITINGLIST");
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24 }
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25
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26 @Override
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27 public synchronized void run() {
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28 ListManager list = info.asClass(ListManager.class);
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29 if (list.getTaskList().size() == 0){
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30 if (remainingTime !=0){
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31 TaskInfo info = new TaskInfo(TaskType.SKIP);
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32 info.setSleepTime(remainingTime);
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33 remainingTime = 0;
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34 list.addTask(info);
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35 }
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36 ods.update("_WAITINGLIST", list);
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37 } else {
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38 setNowTask(list.getTaskList().poll());
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39 ods.update("_WAITINGLIST", list);
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40
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41 if (skipFlag) {
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42 skipFlag = false;
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43 nowTask.setSleepTime(remainingTime + nowTask.getSleepTime());
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44 remainingTime = 0;
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45 }
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46
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47 startTime = System.currentTimeMillis();
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48 System.out.println(nowTask.getSleepTime()+" "+nowTask.getType());
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49 if (nowTask.getSleepTime() != 0){
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50 try {
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51 wait(nowTask.getSleepTime());
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52 } catch (InterruptedException e) {
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53 e.printStackTrace();
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54 }
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55 }
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56
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57
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58 if (!skipFlag){
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59 execTask();
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60 }
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61 setNowTask(null);
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62 startTime = 0;
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63 }
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64 setKey();
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65 }
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66
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67 private synchronized void execTask(){
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68 // ping or close
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69 if (nowTask.getType() == TaskType.PING) {
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70 ods.ping(nowTask.getManagerKey(), nowTask.getReturnKey());
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71 TaskInfo task = new TaskInfo(TaskType.CLOSE);
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72 task.setInfo(nowTask.getManagerKey(), 10 * 1000);
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73 ods.put("_TASKINFO", task);
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74 new RespondPing(nowTask.getReturnKey());
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75 } else if (nowTask.getType() == TaskType.CLOSE) {
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76 // no response from the Remote DataSegment. So close this connection.
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77 DataSegment.get(nowTask.getManagerKey()).close();
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78 }
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79 }
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80
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81 public synchronized void skip() {
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82 skipFlag = true;
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83 if (startTime == 0){
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84 remainingTime = nowTask.getSleepTime();
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85 } else {
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86 remainingTime = nowTask.getSleepTime() - (System.currentTimeMillis() - startTime);
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87 }
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88 System.out.println(remainingTime);
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89 nowTask = null;
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90 notify();
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91 System.out.println(nowTask);
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92 }
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93
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94 public synchronized void ignore() {
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95 skipFlag = true;
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96 remainingTime = 0;
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97 nowTask = null;
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98 notify();
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99 }
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100
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101 public synchronized TaskInfo getNowTask() {
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102 return nowTask;
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103 }
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104
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105 public synchronized void setNowTask(TaskInfo info) {
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106 nowTask = info;
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107 }
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108
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109 public long getRemainingTime() {
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110 if (nowTask != null) {
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111 if (startTime !=0) {
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112 return nowTask.getSleepTime() - (System.currentTimeMillis() - startTime);
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113 } else {
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114 return nowTask.getSleepTime();
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115 }
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116 } else {
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117 return remainingTime;
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118 }
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119 }
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120
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121 public boolean compareNowTask(TaskInfo task) {
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122 if (nowTask != null){
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123 if (nowTask.getType().equals(task.getType())
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124 && nowTask.getManagerKey().equals(task.getManagerKey())){
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125 return true;
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126 }
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127 }
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128 return false;
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129 }
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130
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131 } |