com.arjuna.ats.internal.jts.interposition.ServerFactory Maven / Gradle / Ivy
/*
* JBoss, Home of Professional Open Source
* Copyright 2006, Red Hat Middleware LLC, and individual contributors
* as indicated by the @author tags.
* See the copyright.txt in the distribution for a full listing
* of individual contributors.
* This copyrighted material is made available to anyone wishing to use,
* modify, copy, or redistribute it subject to the terms and conditions
* of the GNU Lesser General Public License, v. 2.1.
* This program is distributed in the hope that it will be useful, but WITHOUT A
* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
* PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
* You should have received a copy of the GNU Lesser General Public License,
* v.2.1 along with this distribution; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
* MA 02110-1301, USA.
*
* (C) 2005-2006,
* @author JBoss Inc.
*/
/*
* Copyright (C) 1998, 1999, 2000, 2001,
*
* Arjuna Solutions Limited,
* Newcastle upon Tyne,
* Tyne and Wear,
* UK.
*
* $Id: ServerFactory.java 2342 2006-03-30 13:06:17Z $
*/
package com.arjuna.ats.internal.jts.interposition;
import java.util.Enumeration;
import org.omg.CORBA.BAD_PARAM;
import org.omg.CORBA.SystemException;
import org.omg.CosTransactions.Control;
import org.omg.CosTransactions.Coordinator;
import org.omg.CosTransactions.NoTransaction;
import org.omg.CosTransactions.Status;
import org.omg.CosTransactions.Terminator;
import com.arjuna.ats.arjuna.common.Uid;
import com.arjuna.ats.arjuna.coordinator.TransactionReaper;
import com.arjuna.ats.arjuna.exceptions.ObjectStoreException;
import com.arjuna.ats.arjuna.objectstore.RecoveryStore;
import com.arjuna.ats.arjuna.objectstore.StateStatus;
import com.arjuna.ats.arjuna.objectstore.StoreManager;
import com.arjuna.ats.internal.jts.orbspecific.ControlImple;
import com.arjuna.ats.internal.jts.orbspecific.coordinator.ArjunaTransactionImple;
import com.arjuna.ats.internal.jts.orbspecific.interposition.ServerControl;
import com.arjuna.ats.internal.jts.orbspecific.interposition.coordinator.ServerTransaction;
import com.arjuna.ats.internal.jts.recovery.transactions.AssumedCompleteHeuristicServerTransaction;
import com.arjuna.ats.jts.logging.jtsLogger;
/**
* This is a server-side factory used for creating server transactions.
*
* @author Mark Little ([email protected])
* @version $Id: ServerFactory.java 2342 2006-03-30 13:06:17Z $
* @since JTS 1.2.4.
*/
public class ServerFactory
{
/**
* @return the server transaction status.
* @since JTS 2.1.1.
*/
public static org.omg.CosTransactions.Status getCurrentStatus (Uid uid)
throws SystemException
{
if (!uid.valid())
throw new BAD_PARAM();
else
{
try
{
ControlImple ctx = null;
synchronized (ServerControl.allServerControls)
{
ctx = (ServerControl) ServerControl.allServerControls.get(uid);
}
/*
* If it's not present then check each element's savingUid just
* in case that is being used instead of the transaction id.
* This is because a server transaction actually has two names:
*
* (i) the tid it pretends to be (ii) the tid it actually is and
* saves its intentions list in.
*
* Don't bother synchronizing since the hash table is
* synchronized anyway, and we're not bothered if new items go
* in while we're looking. If the element we're looking for
* isn't there now it won't be there at all.
*/
if (ctx == null)
{
Enumeration e = ServerControl.allServerControls.elements();
while (e.hasMoreElements())
{
ctx = (ServerControl) e.nextElement();
if (ctx.getImplHandle().getSavingUid().equals(uid))
{
break;
}
}
}
if (ctx != null)
return ctx.getImplHandle().get_status();
else
throw new NoTransaction();
}
catch (NoTransaction ex)
{
return org.omg.CosTransactions.Status.StatusNoTransaction;
}
catch (Exception e) {
jtsLogger.i18NLogger.warn_interposition_sfcaught("ServerFactory.getCurrentStatus", uid, e);
return Status.StatusUnknown;
}
}
}
/*
* @return the status of the transaction, even if it is not active.
*
* @since JTS 2.1.1.
*/
public static org.omg.CosTransactions.Status getStatus (Uid u)
throws NoTransaction, SystemException
{
org.omg.CosTransactions.Status s = org.omg.CosTransactions.Status.StatusUnknown;
try
{
s = getCurrentStatus(u);
}
catch (SystemException e2)
{
throw e2;
}
catch (Exception e3) {
jtsLogger.i18NLogger.warn_interposition_sfcaught("ServerFactory.getStatus", u, e3);
return Status.StatusUnknown;
}
if ((s == org.omg.CosTransactions.Status.StatusUnknown)
|| (s == org.omg.CosTransactions.Status.StatusNoTransaction))
{
return getOSStatus(u);
}
else
return s;
}
/**
* @return the status of the server transaction as recorded in the object
* store.
* @since JTS 2.1.1.
*/
public static org.omg.CosTransactions.Status getOSStatus (Uid u)
throws NoTransaction, SystemException
{
org.omg.CosTransactions.Status s = org.omg.CosTransactions.Status.StatusUnknown;
if (!u.valid())
throw new BAD_PARAM();
else
{
// if here then it is not active, so look in the object store
RecoveryStore store = StoreManager.getRecoveryStore();
try
{
/*
* Do we need to search server transactions too? Possibly not,
* since an interposed coordinator can never always say with
* certainty what the status is of the root coordinator.
*/
int status = store.currentState(u, ServerTransaction.typeName());
switch (status)
{
case StateStatus.OS_UNKNOWN:
return getHeuristicStatus(u, store);
case StateStatus.OS_COMMITTED:
return org.omg.CosTransactions.Status.StatusCommitted;
case StateStatus.OS_UNCOMMITTED:
return org.omg.CosTransactions.Status.StatusPrepared;
case StateStatus.OS_HIDDEN:
case StateStatus.OS_COMMITTED_HIDDEN:
case StateStatus.OS_UNCOMMITTED_HIDDEN:
return org.omg.CosTransactions.Status.StatusPrepared;
default:
return org.omg.CosTransactions.Status.StatusUnknown;
}
}
catch (Exception e) {
jtsLogger.i18NLogger.warn_interposition_sfcaught("ServerFactory.getStatus", u, e);
return Status.StatusUnknown;
}
}
}
public static ServerControl create_transaction (Uid u, Control parentControl, ArjunaTransactionImple parentImpl, Coordinator realCoord, Terminator realTerm, int time_out)
{
ServerControl tranControl = new ServerControl(u, parentControl,
parentImpl, realCoord, realTerm);
/*
* We can't just add server transactions to the reaper list directly
* because they are wrapped by the interposition hierarchy and if we
* reap the transaction, we need to reap the hierarchy too. So, in the
* interposition classes we add the hierarchy to the reaper list.
*/
if ((time_out != 0) && (parentImpl == null))
{
TransactionReaper reaper = TransactionReaper.transactionReaper();
reaper.insert(new ServerControlWrapper((ControlImple) tranControl), time_out);
}
return tranControl;
}
public static ServerControl create_subtransaction (Uid actUid, Coordinator realCoord, Terminator realTerm, ServerControl parent)
{
if (parent == null) {
jtsLogger.i18NLogger.warn_interposition_sfnoparent("ServerFactory.create_subtransaction");
return null;
}
ServerControl toReturn = null;
try
{
Control handle = parent.getControl();
ArjunaTransactionImple tranHandle = parent.getImplHandle();
toReturn = new ServerControl(actUid, handle, tranHandle, realCoord,
realTerm);
handle = null;
tranHandle = null;
}
catch (Exception e)
{
if (toReturn != null)
{
try
{
toReturn.destroy(); // will delete itself
}
catch (Exception ex)
{
}
}
}
return toReturn;
}
private static org.omg.CosTransactions.Status getHeuristicStatus(final Uid uid, final RecoveryStore recoveryStore)
throws ObjectStoreException
{
final int status = recoveryStore.currentState(uid, AssumedCompleteHeuristicServerTransaction.typeName());
switch (status) {
case StateStatus.OS_UNKNOWN:
return org.omg.CosTransactions.Status.StatusNoTransaction;
case StateStatus.OS_COMMITTED:
return org.omg.CosTransactions.Status.StatusCommitted;
case StateStatus.OS_UNCOMMITTED:
return org.omg.CosTransactions.Status.StatusPrepared;
case StateStatus.OS_HIDDEN:
case StateStatus.OS_COMMITTED_HIDDEN:
case StateStatus.OS_UNCOMMITTED_HIDDEN:
return org.omg.CosTransactions.Status.StatusPrepared;
default:
return org.omg.CosTransactions.Status.StatusUnknown;
}
}
}
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