Mercurial > hg > blitz_condensed
annotate src/org/dancres/blitz/remote/LeaseMapImpl.java @ 34:6f68e94c1fb8 default tip
Add CondensedStats monitoring utility, equivalent to vmstat
author | Dominic Cleal <dominic-cleal@cdo2.com> |
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date | Thu, 05 Aug 2010 11:07:25 +0100 |
parents | 3dc0c5604566 |
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0
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1 package org.dancres.blitz.remote; |
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2 |
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3 import java.rmi.RemoteException; |
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4 |
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5 import java.util.Iterator; |
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6 import java.util.HashMap; |
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7 |
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8 import net.jini.core.lease.LeaseMapException; |
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9 import net.jini.core.lease.Lease; |
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10 |
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11 import com.sun.jini.lease.AbstractLeaseMap; |
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12 |
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13 import org.dancres.blitz.lease.SpaceUID; |
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14 |
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15 /** |
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16 @todo Check constraints are compatible |
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17 */ |
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18 class LeaseMapImpl extends AbstractLeaseMap { |
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19 private Landlord theLandlord; |
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20 |
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21 LeaseMapImpl(Lease aLease, long aDuration, Landlord aLandlord) { |
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22 super(aLease, aDuration); |
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23 theLandlord = aLandlord; |
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24 } |
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25 |
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26 public boolean canContainKey(Object aKey) { |
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27 if (aKey instanceof LeaseImpl) { |
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28 LeaseImpl myOther = (LeaseImpl) aKey; |
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29 |
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30 return (myOther.theStub.equals(theLandlord)); |
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31 } |
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32 |
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33 return false; |
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34 } |
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35 |
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36 public void cancelAll() throws LeaseMapException, RemoteException { |
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37 LeaseImpl[] myLeases = new LeaseImpl[size()]; |
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38 SpaceUID[] myUIDs = new SpaceUID[myLeases.length]; |
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39 |
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40 Iterator mySet = keySet().iterator(); |
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41 |
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42 for (int i = 0; mySet.hasNext(); i++) { |
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43 LeaseImpl myLease = (LeaseImpl) mySet.next(); |
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44 |
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45 myLeases[i] = myLease; |
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46 myUIDs[i] = myLease.getUID(); |
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47 } |
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48 |
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49 LeaseResults myResults = theLandlord.cancel(myUIDs); |
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50 |
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51 if (myResults == null) |
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52 return; |
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53 |
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54 HashMap myFails = new HashMap(); |
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55 |
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56 for (int i = 0; i < myResults.theFailures.length; i++) { |
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57 if (myResults.theFailures[i] != null) { |
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58 myFails.put(myLeases[i], myResults.theFailures[i]); |
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59 } |
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60 } |
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61 |
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62 throw new LeaseMapException("Some leases didn't cancel", myFails); |
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63 } |
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64 |
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65 public void renewAll() throws LeaseMapException, RemoteException { |
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66 LeaseImpl[] myLeases = new LeaseImpl[size()]; |
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67 SpaceUID[] myUIDs = new SpaceUID[myLeases.length]; |
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68 long[] myDurations = new long[myLeases.length]; |
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69 |
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70 Iterator mySet = keySet().iterator(); |
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71 |
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72 for (int i = 0; mySet.hasNext(); i++) { |
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73 LeaseImpl myLease = (LeaseImpl) mySet.next(); |
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74 |
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75 myLeases[i] = myLease; |
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76 myUIDs[i] = myLease.getUID(); |
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77 myDurations[i] = ((Long) get(myLease)).longValue(); |
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78 } |
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79 |
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80 LeaseResults myResults = theLandlord.renew(myUIDs, myDurations); |
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81 |
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82 long myNow = System.currentTimeMillis(); |
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83 |
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84 HashMap myFailed = null; |
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85 |
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86 for (int i = 0; i < myResults.theNewDurations.length; i++) { |
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87 long myDuration = myResults.theNewDurations[i]; |
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88 if (myDuration == -1) { |
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89 if (myFailed == null) |
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90 myFailed = new HashMap(); |
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91 |
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92 myFailed.put(myLeases[i], myResults.theFailures[i]); |
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93 |
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94 // Get this lease out of the map - it's "broken" |
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95 remove(myLeases[i]); |
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96 } else { |
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97 myDuration = myDuration + myNow; |
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98 if (myDuration < 0) |
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99 myDuration = Long.MAX_VALUE; |
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100 |
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101 myLeases[i].setExpiration(myDuration); |
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102 } |
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103 } |
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104 |
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105 if (myFailed != null) |
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106 throw new LeaseMapException("Renewing", myFailed); |
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107 } |
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108 } |