@Test
  public void testOrderedOnePhase() throws Exception {
    System.setProperty("com.arjuna.ats.arjuna.common.propertiesFile", "jbossts-properties.xml");

    Uid firstToCommit = new Uid();
    Uid secondToCommit = new Uid();
    AtomicAction A = new AtomicAction();

    // These user defined records could wrap anything such as 1PC JDBC or messages
    OrderedOnePhaseAbstractRecord rec1 = new OrderedOnePhaseAbstractRecord(secondToCommit);
    OrderedOnePhaseAbstractRecord rec2 = new OrderedOnePhaseAbstractRecord(firstToCommit);

    A.begin();

    // Doesn't matter of the order
    A.add(rec1);
    A.add(rec2);

    // Do some work you could save some concept of the work in the abstract record save_state
    // rec1.sendMessage
    // rec2.doSQL

    // This is just so we can see the opportunity for failure recovery
    rec1.causeTransientFailure();

    // Commit, this would make sure the database (rec2) was committed first
    A.commit();

    // This shows recovery working, we should see Uid2 called again, if you had encoded some
    // information in rec2 you could
    // maybe
    // retry the sending of a message or similar
    RecordTypeManager.manager()
        .add(
            new RecordTypeMap() {

              @Override
              public int getType() {
                return OrderedOnePhaseAbstractRecord.typeId();
              }

              @Override
              public Class<? extends AbstractRecord> getRecordClass() {
                return OrderedOnePhaseAbstractRecord.class;
              }
            });
    recoveryPropertyManager.getRecoveryEnvironmentBean().setRecoveryBackoffPeriod(1);
    RecoveryManager.manager(RecoveryManager.DIRECT_MANAGEMENT)
        .addModule(new AtomicActionRecoveryModule());
    RecoveryManager.manager().scan();
  }
  /**
   * Run the recovery manager and observe recovery of the transaction.
   *
   * @throws Exception
   */
  private static void recoverTransaction() throws Exception {

    ConfigParticipantRecordTypeMap map = new ConfigParticipantRecordTypeMap();
    RecordTypeManager.manager().add(map);

    RecoveryManager recoveryManager = RecoverySetup.getAndConfigureRecoveryManager();
    recoveryManager.scan();

    System.out.println("'child-config' value = " + ConfigService.getCommittedValue("child-config"));
    System.out.println(
        "'parent-config' value = " + ConfigService.getCommittedValue("parent-config"));

    recoveryManager.terminate();
  }
 private XARecoveryModule getRecoveryModule() {
   for (RecoveryModule recoveryModule :
       ((Vector<RecoveryModule>) RecoveryManager.manager().getModules())) {
     if (recoveryModule instanceof XARecoveryModule) {
       return (XARecoveryModule) recoveryModule;
     }
   }
   return null;
 }
示例#4
0
  /**
   * This routine finds the new XAResource for the transaction that used the old resource we
   * couldn't serialize. It does this by looking up the XARecoveryModule in the recovery manager and
   * asking it for the XAResource. The recovery manager will then look through its list of
   * registered XARecoveryResource implementations for the appropriate instance. If the
   * XARecoveryModule hasn't been initialised yet then this routine will fail, but on the next scan
   * it should work.
   */
  private final XAResource getNewXAResource() {
    RecoveryManager recMan = RecoveryManager.manager();
    Vector recoveryModules = recMan.getModules();

    if (recoveryModules != null) {
      Enumeration modules = recoveryModules.elements();

      while (modules.hasMoreElements()) {
        RecoveryModule m = (RecoveryModule) modules.nextElement();

        if (m instanceof XARecoveryModule) {
          /*
           * Blaargh! There are better ways to do this!
           */

          return ((XARecoveryModule) m).getNewXAResource(this);
        }
      }
    }

    return null;
  }
示例#5
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 private List<SerializableXAResourceDeserializer> getXAResourceDeserializers() {
   if (serializableXAResourceDeserializers != null) {
     return serializableXAResourceDeserializers;
   }
   synchronized (this) {
     if (serializableXAResourceDeserializers != null) {
       return serializableXAResourceDeserializers;
     }
     serializableXAResourceDeserializers = new ArrayList<SerializableXAResourceDeserializer>();
     for (RecoveryModule recoveryModule : RecoveryManager.manager().getModules()) {
       if (recoveryModule instanceof XARecoveryModule) {
         XARecoveryModule xaRecoveryModule = (XARecoveryModule) recoveryModule;
         serializableXAResourceDeserializers.addAll(
             xaRecoveryModule.getSeriablizableXAResourceDeserializers());
         return serializableXAResourceDeserializers;
       }
     }
   }
   return serializableXAResourceDeserializers;
 }
示例#6
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    public static void main (String[] args)
    {
	boolean testMode = false;

	for (int i = 0; i < args.length; i++)
	{
	    if (args[i].compareTo("-help") == 0)
	    {
		System.out.println("Usage: com.arjuna.ats.arjuna.recovery.RecoveryManager [-help] [-test] [-version]");
		System.exit(0);
	    }
	    if (args[i].compareTo("-version") == 0)
	    {
		System.out.println("Version " + ConfigurationInfo.getVersion());
		System.exit(0);
	    }
	    if (args[i].compareTo("-test") == 0)
	    {
		testMode = true;
	    }
	}

        try
        {
            RecoveryManager manager = null;

            try
            {
                manager = manager();
            }
            catch(Throwable e)
            {
                if(testMode)
                {
                    // in some test cases the recovery manager is killed and restarted in quick succession.
                    // sometimes the O/S does not free up the port fast enough, so we can't reclaim it on restart.
                    // For test mode only, we therefore have a simple backoff-retry kludge:
                    System.err.println("Warning: got exception '"+e.toString()+"' on startup, will retry in 5 seconds in the hope it is transient.");
                    try
                    {
                        Thread.sleep(5000);
                    }
                    catch(InterruptedException interruptedException)
                    {
                        // do nothing
                    }
                    manager = manager();
                }
                else
                {
                    throw e;
                }
            }

            if (testMode)
            {
                System.out.println("Ready");
            }

            // this is never going to return because it only returns when shutdown is called and
            // there is nothing which is going to call shutdown. we probably aught  to provide a
            // clean way of terminating this process.

            manager.waitForTermination();

        }
        catch (Throwable e)
        {
            e.printStackTrace();
        }
    }