Examples with ServerControl com.arjuna.ats.internal.jts.orbspecific.interposition.ServerControl used on opensource projects

Example 21 with ServerControl

use of com.arjuna.ats.internal.jts.orbspecific.interposition.ServerControl in project narayana by jbosstm.

the class StrictInterposition method checkHierarchy.

/*
 * In a single threaded environment we could walk down the hierarchy, aborting
 * any actions which are no longer valid, and creating any new ones. However,
 * in a multi-threaded environment, a thread can make a call from any point in
 * the client's hierarchy, and multiple client threads can invoke the same
 * server object. So, in general we cannot do this optimisation. We must
 * maintain the entire tree until portions of it have explicitly been termined.
 *
 * Once we find the point in the new hierarchy which deviates from our current
 * representation, we begin to assemble a new subtree in much the same way
 * as we did for creating a completely new hierarchy.
 */
/*
 * Also we would like to just register one resource to represent the entire
 * hierarchy, but this has problems: since threads can invoke operations at
 * any point in a hierarchy, we end up with multiple resources at top-level
 * for the same transaction. Each will try to commit the top-level transaction!
 * In this implementation, the first to do so will garbage collect the root
 * of the hierarchy, and probably cause the subsequent ones to fail! There is
 * also the problem with many cross-process calls for the *same* transaction.
 * So, we register *one* resource for each level of the hierarchy *when it is
 * required*, i.e., as the previous transaction terminates, and remove
 * terminated transaction resources when they occur. This means that at
 * top-level we only have a single resource to commit. There are the same
 * number of cross-process invocations. However, we also maintain the entire
 * hierarchy at the server, so if it makes subsequent invocations, the right
 * hierarchy gets sent out!
 */
protected synchronized ControlImple checkHierarchy(ServerTopLevelAction hier, PropagationContext context) {
    ServerControl control = null;
    // top-level transaction
    ServerResource currentAction = hier;
    int depth = context.parents.length;
    // index of the new transactions in the hierarchy
    int differenceIndex = -1;
    if (depth == 0) {
        /*
	     * There are no transactions in the context other than the current
	     * transaction, which must therefore be top-level. We already have
	     * the control to return. However, make sure it has registered
	     * itself with the "real" transaction.
	     */
        ServerStrictTopLevelAction tx = (ServerStrictTopLevelAction) hier;
        tx.interposeResource();
        // top-level transaction's control
        control = tx.control();
    } else {
        ServerResource nestedAction = null;
        for (// don't check depth-1 as it is current action!
        int i = (int) depth - 2; // don't check depth-1 as it is current action!
        i >= 0; // don't check depth-1 as it is current action!
        i--) {
            nestedAction = currentAction.getChild(Utility.otidToUid(context.parents[i].otid));
            if (// point of difference, so stop trawling hierarchy
            nestedAction == null) {
                // remember for later so that we can add new actions.
                differenceIndex = i;
                break;
            } else {
                /*
		     * currentAction *always* points to the last known
		     * good transaction in our hierarchy.
		     */
                currentAction = nestedAction;
            }
        }
        if (differenceIndex != -1) {
            control = currentAction.control();
            Coordinator tmpCoord = null;
            Terminator tmpTerm = null;
            for (int j = differenceIndex; j >= 0; j--) {
                tmpCoord = context.parents[j].coord;
                tmpTerm = context.parents[j].term;
                control = ServerFactory.create_subtransaction(Utility.otidToUid(context.parents[j].otid), tmpCoord, tmpTerm, control);
                nestedAction = new ServerStrictNestedAction(control, false);
                if (!nestedAction.valid()) {
                    try {
                        // does dispose as well!
                        ((ServerStrictNestedAction) nestedAction).rollback();
                        nestedAction = null;
                    } catch (Exception e) {
                    }
                    throw new TRANSACTION_ROLLEDBACK();
                }
                currentAction.addChild((ServerStrictNestedAction) nestedAction);
                currentAction = nestedAction;
            }
        } else {
        /*
		 * Hierarchies may be identical.
		 * Remember to check!
		 */
        }
        Uid currentUid = Utility.otidToUid(context.current.otid);
        /*
	     * currentAction points to the parent of the 'current'
	     * transaction, i.e., the last element in the TransIdentity
	     * structure. So, ask it if the sent hierarchy's child is
	     * one of its children.
	     */
        nestedAction = currentAction.getChild(currentUid);
        if (nestedAction == null) {
            /*
		 * Different notion of current in sent hierarchy.
		 * So, add it to the hierarchy here.
		 */
            control = currentAction.control();
            /*
		 * Now deal with the current transaction.
		 */
            TransIdentity currentID = context.current;
            control = ServerFactory.create_subtransaction(currentUid, currentID.coord, currentID.term, control);
            nestedAction = new ServerStrictNestedAction(control, true);
            if (!nestedAction.valid()) {
                try {
                    // does dispose as well!
                    ((ServerStrictNestedAction) nestedAction).rollback();
                    nestedAction = null;
                } catch (Exception e) {
                }
                throw new TRANSACTION_ROLLEDBACK();
            }
            currentAction.addChild((ServerStrictNestedAction) nestedAction);
        } else {
            /*
		 * Same current, so get its control and return it.
		 * Remember to make sure it has registered itself with
		 * the "real" transaction.
		 */
            nestedAction.interposeResource();
            control = nestedAction.control();
        }
    }
    if (jtsLogger.logger.isTraceEnabled())
        compareHierarchies(context, hier);
    return control;
}

Example 22 with ServerControl

use of com.arjuna.ats.internal.jts.orbspecific.interposition.ServerControl in project narayana by jbosstm.

the class StrictInterposition method createHierarchy.

protected synchronized ControlImple createHierarchy(PropagationContext ctx, Uid currentUid) throws SystemException {
    /*
	 * Start at the parent and work our way down to "current". The current
	 * transaction is not in the IDL sequence, but sent as separate field
	 * of the propagation context. This tends to make the code more
	 * complex than it would be if the entire hierarchy was represented in
	 * one place.
	 */
    /*
	 * We only ever register the current transaction with its parent, and
	 * as each transaction commits, it registers its parent with the
	 * "real" parent.
	 */
    int depth = ctx.parents.length;
    ServerResource action = null;
    Coordinator tmpCoord = null;
    Terminator tmpTerm = null;
    if (depth == 0) {
        tmpCoord = ctx.current.coord;
        tmpTerm = ctx.current.term;
    } else {
        tmpCoord = ctx.parents[depth - 1].coord;
        tmpTerm = ctx.parents[depth - 1].term;
    }
    if (// terminator my correctory be null
    tmpCoord == null)
        return null;
    ServerControl control = ServerFactory.create_transaction(currentUid, null, null, tmpCoord, tmpTerm, ctx.timeout);
    action = new ServerStrictTopLevelAction(control, ((depth == 0) ? true : false));
    if (!action.valid()) {
        try {
            // does dispose as well!
            ((ServerStrictTopLevelAction) action).rollback();
            action = null;
        } catch (Exception e) {
        }
        throw new TRANSACTION_ROLLEDBACK();
    }
    ServerTopLevelAction newElement = (ServerStrictTopLevelAction) action;
    _head.add(newElement);
    if (// current is a nested transaction
    depth > 0) {
        /*
	     * Now deal with any nested transactions.
	     * As we create, register with the original transactions.
	     */
        ServerResource nestedAction = null;
        for (int i = depth - 2; i >= 0; i--) {
            tmpCoord = ctx.parents[i].coord;
            tmpTerm = ctx.parents[i].term;
            control = ServerFactory.create_subtransaction(Utility.otidToUid(ctx.parents[i].otid), tmpCoord, tmpTerm, control);
            // not current, so don't register
            nestedAction = new ServerStrictNestedAction(control, false);
            if (!nestedAction.valid()) {
                try {
                    // does dispose as well!
                    ((ServerStrictNestedAction) nestedAction).rollback_subtransaction();
                    nestedAction = null;
                } catch (Exception e) {
                }
                throw new TRANSACTION_ROLLEDBACK();
            }
            /*
		 * Add transaction resource to list.
		 */
            action.addChild((ServerStrictNestedAction) nestedAction);
            action = nestedAction;
        }
        /*
	     * Now deal with current transaction. If there is
	     * only one transaction we do nothing.
	     */
        tmpCoord = ctx.current.coord;
        tmpTerm = ctx.current.term;
        control = ServerFactory.create_subtransaction(Utility.otidToUid(ctx.current.otid), tmpCoord, tmpTerm, control);
        // current, so register
        nestedAction = new ServerStrictNestedAction(control, true);
        if (!nestedAction.valid()) {
            try {
                // does dispose as well!
                ((ServerStrictNestedAction) nestedAction).rollback_subtransaction();
                nestedAction = null;
            } catch (Exception e) {
            }
            throw new TRANSACTION_ROLLEDBACK();
        }
        action.addChild((ServerStrictNestedAction) nestedAction);
    }
    if (jtsLogger.logger.isTraceEnabled())
        compareHierarchies(ctx, newElement);
    return control;
}

Example 23 with ServerControl

use of com.arjuna.ats.internal.jts.orbspecific.interposition.ServerControl in project narayana by jbosstm.

the class RecoveredServerTransaction method getStatusFromParent.

private Status getStatusFromParent() {
    org.omg.CosTransactions.Status theStatus = org.omg.CosTransactions.Status.StatusUnknown;
    // This variable is applied with Orbix
    int not_exist_count;
    if ((super._recoveryCoordinator != null) && (get_status() == org.omg.CosTransactions.Status.StatusPrepared)) {
        ServerControl sc = new ServerControl((ServerTransaction) this);
        ServerRecoveryTopLevelAction tla = new ServerRecoveryTopLevelAction(sc);
        if (tla.valid()) {
            try {
                theStatus = super._recoveryCoordinator.replay_completion(tla.getReference());
                if (jtsLogger.logger.isDebugEnabled()) {
                    jtsLogger.logger.debug("RecoveredServerTransaction.getStatusFromParent - replay_completion status = " + Utility.stringStatus(theStatus));
                }
            } catch (TRANSIENT ex_trans) {
                /*
                     * A failure that might not occur again if the request is retried. Not definite.
                     */
                jtsLogger.i18NLogger.warn_recovery_transactions_RecoveredServerTransaction_10(get_uid());
                theStatus = Status.StatusUnknown;
            }// What here what should be done for Orbix2000
             catch (OBJECT_NOT_EXIST ex) {
                // i believe this state should be notran - ots explicitly
                // objnotexist is
                // rollback
                theStatus = org.omg.CosTransactions.Status.StatusRolledBack;
                if (jtsLogger.logger.isDebugEnabled()) {
                    jtsLogger.logger.debug("RecoveredServerTransaction.getStatusFromParent -" + " replay_completion got object_not_exist = " + Utility.stringStatus(theStatus));
                }
            } catch (NotPrepared ex1) {
                jtsLogger.i18NLogger.warn_recovery_transactions_RecoveredServerTransaction_12();
                theStatus = Status.StatusActive;
            } catch (Exception e) {
                // Unknown error, so better to do nothing at this stage.
                jtsLogger.i18NLogger.warn_recovery_transactions_RecoveredServerTransaction_13(e);
            }
        } else {
            jtsLogger.i18NLogger.warn_recovery_transactions_RecoveredServerTransaction_14(get_uid());
        }
        // Make sure we "delete" these objects when we are finished
        // with them or there will be a memory leak. If they are deleted
        // "early", and the root coordinator needs them then it will find
        // them unavailable, and will have to retry recovery later.
        sc = null;
        tla = null;
    } else {
        if (jtsLogger.logger.isDebugEnabled()) {
            jtsLogger.logger.debug("RecoveredServerTransaction:getStatusFromParent - " + "no recovcoord or status not prepared");
        }
    }
    return theStatus;
}

Example 24 with ServerControl

use of com.arjuna.ats.internal.jts.orbspecific.interposition.ServerControl in project narayana by jbosstm.

the class ServerFactoryUnitTest method test.

@Test
public void test() throws Exception {
    TransactionFactoryImple factory = new TransactionFactoryImple("test");
    ControlImple tx = factory.createLocal(1000);
    Uid u = new Uid();
    ServerControl server = ServerFactory.create_transaction(u, null, null, tx.get_coordinator(), tx.get_terminator(), 1000);
    try {
        ServerFactory.getCurrentStatus(new Uid("", false));
        Assert.fail();
    } catch (final Throwable ex) {
    }
    Assert.assertEquals(ServerFactory.getStatus(tx.get_uid()), org.omg.CosTransactions.Status.StatusActive);
}

Example 25 with ServerControl

use of com.arjuna.ats.internal.jts.orbspecific.interposition.ServerControl in project narayana by jbosstm.

the class ServerNestedOSIActionUnitTest method testRollback.

@Test
public void testRollback() throws Exception {
    ControlImple cont = new ControlImple(null, null);
    Control theControl = cont.getControl();
    ArjunaTransactionImple tx = cont.getImplHandle();
    ServerControl sc = new ServerControl(tx.get_uid(), theControl, tx, theControl.get_coordinator(), theControl.get_terminator());
    ServerOSINestedAction act = new ServerOSINestedAction(sc, true);
    act.rollback_subtransaction();
}