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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 static TaskExecuter instance = new TaskExecuter();
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14
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15 private TaskExecuter(){}
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16 public static TaskExecuter getInstance(){
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17 return instance;
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18 }
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19
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20 public void setKey(){
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21 ids.init();
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22 info.setKey("_WAITINGLIST");
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23 }
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24
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25 @Override
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26 public synchronized void run(){
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27 ListManager list = info.asClass(ListManager.class);
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28 if (list.getTaskList().size() == 0){
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29 ods.update("_WAITINGLIST", list);
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30 setKey();
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31 return;
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32 }
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33 nowTask = list.getTaskList().poll();
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34 ods.update("_WAITINGLIST", list);
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35 if (skipFlag){
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36 skipFlag = false;
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37 }
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38 startTime = System.currentTimeMillis();
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39 System.out.println(nowTask.getSleepTime()+" "+nowTask.getType());
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40 if (nowTask.getSleepTime()!=0){
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41 try {
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42 this.wait(nowTask.getSleepTime());
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43 } catch (InterruptedException e){}
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44 }
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45 if (!skipFlag){
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46 if (nowTask.getType() == TaskType.PING){
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47 ods.ping(nowTask.getManagerKey(), nowTask.getReturnKey());
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48 TaskInfo task = new TaskInfo(TaskType.CLOSE);
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49 task.setInfo(nowTask.getManagerKey(), 60 * 1000);
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50 ods.put("_TASKINFO", task);
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51 new RespondPing(nowTask.getReturnKey());
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52 } else {
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53 // no response from the Remote DataSegment. So close this connection.
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54 DataSegment.get(nowTask.getManagerKey()).close();
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55 }
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56 }
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57 nowTask = null;
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58 setKey();
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59 }
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60
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61 public synchronized long skip(){
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62 skipFlag = true;
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63 long remainingTime = nowTask.getSleepTime() - (System.currentTimeMillis() - startTime);
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64 nowTask = null;
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65 notify();
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66 return remainingTime;
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67 }
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68
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69 public TaskInfo getNowTask(){
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70 return nowTask;
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71 }
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72
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73 public long getStartTime(){
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74 return startTime;
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75 }
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76
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77 public boolean compareNowTask(TaskInfo task){
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78 if (nowTask != null){
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79 if (nowTask.getType().equals(task.getType())
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80 && nowTask.getManagerKey().equals(task.getManagerKey())){
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81 return true;
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82 }
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83 }
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84 return false;
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85 }
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86
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87 } |
