1 | package gov.hhs.fha.nhinc.gateway.aggregator.persistence;
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2 |
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3 | import gov.hhs.fha.nhinc.gateway.aggregator.dao.AggTransactionDao;
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4 | import gov.hhs.fha.nhinc.gateway.aggregator.model.AggTransaction;
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5 | import java.util.Date;
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6 | import org.apache.commons.logging.Log;
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7 | import org.apache.commons.logging.LogFactory;
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8 |
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9 |
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10 | /**
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11 | *
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12 | * @author westbergl
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13 | */
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14 | public class GarbageCollectorThread extends Thread
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15 | {
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16 | private static Log log = LogFactory.getLog(GarbageCollectorThread.class);
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17 | private Date pivotDate = null;
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18 |
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19 | /**
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20 | * Construct a garbage collector that will clean anything
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21 | * older than the specified date.
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22 | */
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23 | public GarbageCollectorThread(Date dtPivotDate)
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24 | {
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25 | pivotDate = dtPivotDate;
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26 | }
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27 |
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28 |
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29 | /**
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30 | * This runs the GarbageColletor against the aggregator tables. It will
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31 | * delete anything that is older than the pivot date.
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32 | *
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33 | */
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34 | @Override
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35 | public void run()
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36 | {
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37 | if (pivotDate != null)
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38 | {
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39 | AggTransactionDao oAggTransactionDao = new AggTransactionDao();
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40 |
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41 | try
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42 | {
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43 | int iNumTrans = 0;
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44 | AggTransaction[] oaAggTransaction = oAggTransactionDao.findOlderThan(pivotDate);
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45 | if ((oaAggTransaction != null) &&
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46 | (oaAggTransaction.length > 0))
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47 | {
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48 | for (AggTransaction oAggTransaction : oaAggTransaction)
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49 | {
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50 | oAggTransactionDao.delete(oAggTransaction);
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51 | iNumTrans++;
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52 | }
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53 | }
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54 |
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55 | log.debug("Aggregator garbage collector cleaned out " + iNumTrans + " stale transactions.");
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56 | }
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57 | catch (Exception e)
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58 | {
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59 | String sErrorMessage = "Aggregator garbage collector failed to read entries from the aggregation tables. " +
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60 | "Garbage collection is not being done. Error: " + e.getMessage();
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61 | log.error(sErrorMessage, e);
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62 | return;
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63 | }
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64 |
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65 | }
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66 | else
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67 | {
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68 | String sErrorMessage = "Cannot run Aggregator garbage collection - pivot date was not set.";
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69 | log.error(sErrorMessage);
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70 | return;
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71 | }
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72 |
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73 | return;
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74 | }
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75 | }
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