Mercurial > hg > blitz_condensed
annotate src/org/dancres/blitz/remote/LeaseImpl.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 com.sun.jini.lease.AbstractLease; |
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6 |
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7 import net.jini.core.lease.UnknownLeaseException; |
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8 import net.jini.core.lease.LeaseDeniedException; |
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9 import net.jini.core.lease.LeaseMap; |
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10 import net.jini.core.lease.Lease; |
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11 |
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12 import net.jini.id.Uuid; |
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13 import net.jini.id.ReferentUuid; |
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14 |
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15 import org.dancres.blitz.lease.SpaceUID; |
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16 |
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17 /** |
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18 Generic lease implementation used to wrap all Blitz's internal lease |
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19 implementations. |
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20 */ |
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21 public class LeaseImpl extends AbstractLease implements ReferentUuid { |
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22 Landlord theStub; |
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23 Uuid theUuid; |
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24 |
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25 private SpaceUID theUID; |
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26 |
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27 public LeaseImpl(Landlord aLandlord, Uuid aUuid, SpaceUID aUID, |
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28 long anExpiration) { |
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29 |
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30 super(anExpiration); |
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31 theStub = aLandlord; |
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32 theUID = aUID; |
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33 theUuid = aUuid; |
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34 } |
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35 |
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36 void setLandlord(Landlord aLandlord, Uuid aUid) { |
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37 theStub = aLandlord; |
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38 theUuid = aUid; |
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39 } |
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40 |
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41 public Uuid getReferentUuid() { |
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42 return theUuid; |
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43 } |
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44 |
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45 protected long doRenew(long duration) |
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46 throws UnknownLeaseException, LeaseDeniedException, RemoteException { |
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47 |
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48 return theStub.renew(theUID, duration); |
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49 } |
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50 |
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51 public void cancel() |
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52 throws UnknownLeaseException, RemoteException { |
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53 |
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54 theStub.cancel(theUID); |
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55 } |
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56 |
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57 void setExpiration(long anExpiry) { |
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58 expiration = anExpiry; |
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59 } |
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60 |
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61 SpaceUID getUID() { |
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62 return theUID; |
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63 } |
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64 |
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65 /** |
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66 Each entry in a LeaseMap needs a duration to renew for so, when we |
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67 create the leasemap, we insert the current lease as having the specified |
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68 renewal duration. |
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69 */ |
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70 public LeaseMap createLeaseMap(long aDuration) { |
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71 return new LeaseMapImpl(this, aDuration, theStub); |
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72 } |
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73 |
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74 public boolean canBatch(Lease aLease) { |
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75 |
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76 if (aLease instanceof LeaseImpl) { |
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77 LeaseImpl myOther = (LeaseImpl) aLease; |
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78 |
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79 return myOther.theStub.equals(theStub); |
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80 } |
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81 |
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82 return false; |
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83 } |
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84 |
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85 public int hashCode() { |
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86 return theUID.hashCode(); |
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87 } |
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88 |
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89 public boolean equals(Object anObject) { |
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90 if (anObject instanceof LeaseImpl) { |
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91 if (theUuid.equals(((LeaseImpl) anObject).theUuid)) { |
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92 return (theUID.equals(((LeaseImpl) anObject).theUID)); |
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93 } |
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94 } |
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95 |
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96 return false; |
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97 } |
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98 |
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99 public String toString() { |
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100 return "LeaseImpl: " + theUID; |
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101 } |
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102 } |