Mercurial > hg > blitz_condensed
annotate src/org/dancres/blitz/remote/ConstrainableLeaseImpl.java @ 0:3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
author | Dan Creswell <dan.creswell@gmail.com> |
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date | Sat, 21 Mar 2009 11:00:06 +0000 |
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Initial checkin of blitz 2.0 fcs - no installer yet.
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1 package org.dancres.blitz.remote; |
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2 |
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3 import java.io.IOException; |
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4 import java.io.ObjectInputStream; |
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5 import java.io.InvalidObjectException; |
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6 |
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7 import java.lang.reflect.Method; |
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8 |
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9 import net.jini.id.Uuid; |
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10 |
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11 import net.jini.core.constraint.RemoteMethodControl; |
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12 import net.jini.core.constraint.MethodConstraints; |
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13 |
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14 import net.jini.security.proxytrust.ProxyTrustIterator; |
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15 import net.jini.security.proxytrust.SingletonProxyTrustIterator; |
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16 |
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17 import net.jini.core.lease.Lease; |
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18 |
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19 import net.jini.admin.JoinAdmin; |
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20 |
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21 import net.jini.id.Uuid; |
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22 |
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23 import com.sun.jini.proxy.ConstrainableProxyUtil; |
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24 |
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25 import org.dancres.blitz.lease.SpaceUID; |
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26 |
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27 import org.dancres.util.ReflectUtil; |
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28 |
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29 /** |
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30 When running in "secure mode", Leases should be constrainable as per |
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31 other proxies. |
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32 */ |
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33 public final class ConstrainableLeaseImpl extends |
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34 LeaseImpl implements RemoteMethodControl { |
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35 |
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36 /** |
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37 The outer-layer calls all omit SpaceUID whilst the server |
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38 calls use SpaceUID so we must translate constraints which will be |
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39 applied against the outer-layer methods to the internal methods. |
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40 */ |
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41 private static final Method[] theMethodMapping = { |
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42 ReflectUtil.findMethod(Lease.class, "renew", |
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43 new Class[] {long.class}), |
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44 ReflectUtil.findMethod(Landlord.class, "renew", |
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45 new Class[] {SpaceUID.class, long.class}), |
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46 ReflectUtil.findMethod(Lease.class, "cancel", |
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47 new Class[] {}), |
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48 ReflectUtil.findMethod(Landlord.class, "cancel", |
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49 new Class[] {SpaceUID.class}) |
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50 }; |
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51 |
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52 private static Landlord constrainStub(Landlord aServer, |
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53 MethodConstraints aConstraints) { |
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54 RemoteMethodControl myServer = (RemoteMethodControl) aServer; |
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55 |
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56 MethodConstraints myStubConstraints = |
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57 ConstrainableProxyUtil.translateConstraints(aConstraints, |
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58 theMethodMapping); |
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59 |
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60 myServer.setConstraints(myStubConstraints); |
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61 return (Landlord) myServer; |
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62 } |
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63 |
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64 private final MethodConstraints theConstraints; |
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65 |
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66 ConstrainableLeaseImpl(Landlord aLandlord, Uuid aUuid, SpaceUID aUID, |
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67 long aDuration) { |
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68 super(aLandlord, aUuid, aUID, aDuration); |
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69 theConstraints = null; |
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70 } |
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71 |
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72 ConstrainableLeaseImpl(Landlord aLandlord, Uuid aUuid, SpaceUID aUID, |
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73 long aDuration, MethodConstraints aConstraints) { |
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74 super(constrainStub(aLandlord, aConstraints), aUuid, aUID, |
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75 aDuration); |
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76 theConstraints = aConstraints; |
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77 } |
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78 |
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79 private ProxyTrustIterator getProxyTrustIterator() { |
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80 return new SingletonProxyTrustIterator(theStub); |
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81 } |
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82 |
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83 public RemoteMethodControl setConstraints(MethodConstraints aConstraints) { |
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84 return new ConstrainableLeaseImpl(theStub, theUuid, getUID(), |
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85 expiration, aConstraints); |
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86 } |
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87 |
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88 public MethodConstraints getConstraints() { |
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89 return theConstraints; |
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90 } |
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91 } |