Mercurial > hg > blitz_stable

annotate src/org/dancres/blitz/remote/txn/TransactionManagerImpl.java @ 32:243c74d599bf

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author Dan Creswell <dan.creswell@gmail.com>
date Sat, 12 Jun 2010 10:41:47 +0100
parents 3dc0c5604566
children
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0
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1 package org.dancres.blitz.remote.txn;
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2
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3 import java.rmi.RemoteException;
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4 import java.io.IOException;
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5
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6 import net.jini.core.transaction.server.TransactionManager;
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7 import net.jini.core.transaction.server.TransactionParticipant;
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8 import net.jini.core.transaction.server.CrashCountException;
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9 import net.jini.core.transaction.*;
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10 import net.jini.core.lease.LeaseDeniedException;
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11 import net.jini.core.lease.Lease;
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12 import net.jini.core.entry.Entry;
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13 import net.jini.core.lookup.ServiceID;
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14 import net.jini.core.discovery.LookupLocator;
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15 import net.jini.config.ConfigurationException;
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16 import net.jini.config.NoSuchEntryException;
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17 import net.jini.export.Exporter;
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18 import net.jini.lookup.JoinManager;
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19 import net.jini.lookup.ServiceIDListener;
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20 import net.jini.lookup.entry.ServiceInfo;
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21 import net.jini.lookup.entry.Name;
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22 import net.jini.discovery.LookupDiscoveryManager;
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23 import net.jini.id.Uuid;
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24
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25 import com.sun.jini.lookup.entry.BasicServiceType;
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26
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27 import org.dancres.blitz.config.ConfigurationFactory;
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28 import org.dancres.blitz.VersionInfo;
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29 import org.dancres.blitz.remote.BlitzServer;
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30 import org.dancres.blitz.remote.ProxyFactory;
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31
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32 /**
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33 */
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34 public class TransactionManagerImpl implements TransactionManager,
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35 ServiceIDListener {
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36
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37 private JoinManager theJoinManager;
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38 private Exporter theExporter;
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39 private TransactionManager theStub;
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40 private TransactionManager theProxy;
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41
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42 private String[] theGroups;
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43 private Entry[] theAttributes;
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44 private LookupLocator[] theLocators;
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45
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46 private BlitzServer theLandlord;
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47 private Uuid theLandlordUuid;
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48
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49 public TransactionManagerImpl(BlitzServer aLandlord, Uuid aLandlordUuid)
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50 throws ConfigurationException, IOException {
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51 theExporter =
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52 ((Exporter) ConfigurationFactory.getEntry("loopbackTxnExporter",
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53 Exporter.class,
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54 null));
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55
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56 theGroups = (String[])
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57 ConfigurationFactory.getEntry("initialGroups", String[].class,
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58 null);
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59
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60 theLocators =
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61 (LookupLocator[])
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62 ConfigurationFactory.getEntry("initialLocators",
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63 LookupLocator[].class,
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64 new LookupLocator[0]);
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65
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66 String myName = null;
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67
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68 try {
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69 myName =
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70 (String)
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71 ConfigurationFactory.getEntry("name", String.class);
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72 } catch (NoSuchEntryException aNSEE) {
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73 // Doesn't matter
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74 }
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75
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76 theAttributes = getDefaultAttrs(myName);
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77
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78 if (theExporter == null) {
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79 // No exporter means we're not active
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80 //
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81 return;
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82 }
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83
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84 theStub = (TransactionManager) theExporter.export(this);
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85
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86 LookupDiscoveryManager myLDM =
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87 new LookupDiscoveryManager(theGroups, theLocators, null);
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88
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89 theLandlord = aLandlord;
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90 theLandlordUuid = aLandlordUuid;
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91
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92 theProxy = new TxnMgrProxy(theStub, theLandlordUuid);
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93
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94 LoopBackMgr.init(theProxy);
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95
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96 theJoinManager = new JoinManager(theProxy, theAttributes, this,
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97 myLDM, null, ConfigurationFactory.getConfig());
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98 }
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99
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100 public void terminate() {
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101 if (theJoinManager != null) {
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102 theJoinManager.terminate();
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103 theExporter.unexport(true);
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104 }
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105 }
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106
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107 public Created create(long leaseTime) throws LeaseDeniedException,
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108 RemoteException {
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109
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110 TxnTicket myTicket = LoopBackMgr.get().create(leaseTime);
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111
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112 Lease myLease =
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113 ProxyFactory.newLeaseImpl(theLandlord, theLandlordUuid,
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114 myTicket.getUID(), myTicket.getLeaseTime());
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115
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116 return new TransactionManager.Created(myTicket.getUID().getId(), myLease);
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117 }
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118
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119 public void join(long id, TransactionParticipant transactionParticipant, long l1)
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120 throws UnknownTransactionException, CannotJoinException,
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121 CrashCountException, RemoteException {
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122 throw new RemoteException("Remote participants are not supported - use Mahalo");
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123 }
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124
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125 public int getState(long id) throws UnknownTransactionException, RemoteException {
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126 throw new RemoteException("Remote participants are not supported - use Mahalo");
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127 }
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128
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129 public void commit(long id) throws UnknownTransactionException,
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130 CannotCommitException, RemoteException {
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131 LoopBackMgr.get().commit(id);
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132 }
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133
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134 public void commit(long id, long timeout) throws UnknownTransactionException,
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135 CannotCommitException, TimeoutExpiredException, RemoteException {
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136 LoopBackMgr.get().commit(id, timeout);
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137 }
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138
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139 public void abort(long id) throws UnknownTransactionException,
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140 CannotAbortException, RemoteException {
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141 LoopBackMgr.get().abort(id);
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142 }
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143
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144 public void abort(long id, long timeout) throws UnknownTransactionException,
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145 CannotAbortException, TimeoutExpiredException, RemoteException {
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146 LoopBackMgr.get().abort(id, timeout);
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147 }
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148
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149 public void serviceIDNotify(ServiceID serviceID) {
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150 // Don't care
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151 }
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152
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153 static Entry[] getDefaultAttrs(String aName) {
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154 Entry myInfo =
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155 new ServiceInfo("Blitz JavaSpaces Loopback TxnMgr",
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156 VersionInfo.EMAIL_CONTACT,
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157 VersionInfo.SUPPLIER_NAME,
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158 VersionInfo.VERSION, "", "");
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159
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160 Entry myType = new BasicServiceType("TransactionManager");
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161
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162 if (aName != null) {
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163 return new Entry[]{myInfo, myType, new Name(aName)};
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164 } else {
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165 return new Entry[]{myInfo, myType};
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166 }
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167 }
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168 }