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Metro Web Services Runtime OSGi Bundle
/*
* Copyright (c) 1997, 2020 Oracle and/or its affiliates. All rights reserved.
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Distribution License v. 1.0, which is available at
* http://www.eclipse.org/org/documents/edl-v10.php.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
package com.sun.xml.ws.tx.at.internal;
import com.sun.xml.ws.tx.at.WSATConstants;
import com.sun.xml.ws.tx.at.runtime.TransactionServices;
import com.sun.xml.ws.tx.at.WSATException;
import com.sun.xml.ws.tx.at.WSATHelper;
import com.sun.xml.ws.tx.at.common.TransactionImportManager;
import java.util.ArrayList;
import java.util.List;
import java.util.logging.Level;
import com.sun.istack.logging.Logger;
import jakarta.transaction.*;
import javax.transaction.xa.XAException;
import javax.transaction.xa.XAResource;
import javax.transaction.xa.Xid;
import jakarta.xml.ws.EndpointReference;
public class TransactionServicesImpl implements TransactionServices {
private static TransactionServices INSTANCE;
private static Logger LOGGER = Logger.getLogger(TransactionServicesImpl.class);
//this is used to track registrations and avoid dupe registration
static List importedXids = new ArrayList();
public static TransactionServices getInstance() {
if(INSTANCE==null) INSTANCE = new TransactionServicesImpl();
return INSTANCE;
}
private TransactionServicesImpl() { //todo use MaintenanceTaskExecutor
ForeignRecoveryContextManager.getInstance().start();
}
public byte[] getGlobalTransactionId() {
return new byte[]{'a'};
}
/**
* Remove Xid from importedXids. This is safe anytime after two-phase completion begins as importedXids only
* serves to avoid duplicate registration and it is a protocol error (ie bug)
* if registration should take place after 2pc begins.
* @param xid Xid
*/
private void removeFromImportedXids(Xid xid) {
importedXids.remove(xid);
}
public Xid enlistResource(XAResource resource, Xid xid)
throws WSATException {
WSATGatewayRM wsatgw = WSATGatewayRM.getInstance();
if (wsatgw == null) throw new WSATException("WS-AT gateway not deployed.");
Transaction transaction = WSATHelper.getInstance().getFromXidToTransactionMap(xid);
try {
return wsatgw.registerWSATResource(xid, resource, transaction);
} catch (IllegalStateException e) {
throw new WSATException(e);
} catch (RollbackException e) {
throw new WSATException(e);
} catch (SystemException e) {
throw new WSATException(e);
}
}
public void registerSynchronization(Synchronization synchronization, Xid xid) throws WSATException {
debug("regsync");
}
//returns null if not infected previously or xid if it has
public Xid importTransaction(int timeout, byte[] tId) throws WSATException {
final XidImpl xidImpl = new XidImpl(tId);
if(importedXids.contains(xidImpl)) return xidImpl;
TransactionImportManager.getInstance().recreate(xidImpl, timeout);
importedXids.add(xidImpl);
return null;
}
public String prepare(byte[] tId) throws WSATException {
debug("prepare:" + new String(tId));
final XidImpl xidImpl = new XidImpl(tId);
removeFromImportedXids(xidImpl);
ForeignRecoveryContextManager.getInstance().persist(xidImpl);
int vote;
try {
vote = TransactionImportManager.getInstance().getXATerminator().prepare(xidImpl);
} catch (XAException ex) {
LOGGER.warning(ex.getMessage() + " errorcode:" + ex.errorCode, ex);
throw new WSATException(ex.getMessage() + " errorcode:" + ex.errorCode, ex);
} finally {
TransactionImportManager.getInstance().release(xidImpl); //prepare does an implicit import/recreate
}
if(vote==XAResource.XA_RDONLY) {
debug("deleting record due to readonly reply from prepare for txid:" + new String(tId));
ForeignRecoveryContextManager.getInstance().delete(xidImpl);
}
return vote==XAResource.XA_OK?WSATConstants.PREPARED:WSATConstants.READONLY;
}
public void commit(byte[] tId) throws WSATException {
debug("commit:" + new String(tId));
final XidImpl xidImpl = new XidImpl(tId);
try {
TransactionImportManager.getInstance().getXATerminator().commit(xidImpl, false);
ForeignRecoveryContextManager.getInstance().delete(xidImpl);
} catch (XAException ex) {
LOGGER.warning(ex.getMessage() + " errorcode:" + ex.errorCode, ex);
throw new WSATException(ex.getMessage() + " errorcode:" + ex.errorCode, ex);
} finally {
TransactionImportManager.getInstance().release(xidImpl);
}
}
public void rollback(byte[] tId) throws WSATException {
debug("rollback:" + new String(tId));
final XidImpl xidImpl = new XidImpl(tId);
removeFromImportedXids(xidImpl);
try {
TransactionImportManager.getInstance().getXATerminator().rollback(xidImpl);
ForeignRecoveryContextManager.getInstance().delete(xidImpl);
} catch (XAException ex) {
LOGGER.warning(ex.getMessage() + " errorcode:" + ex.errorCode, ex);
if(ex.errorCode == XAException.XAER_NOTA || ex.errorCode == XAException.XAER_PROTO)
ForeignRecoveryContextManager.getInstance().delete(xidImpl);
throw new WSATException(ex.getMessage() + " errorcode:" + ex.errorCode, ex);
} finally {
TransactionImportManager.getInstance().release(xidImpl);
}
}
public void replayCompletion(String tId, XAResource xaResource) throws WSATException {
debug("replayCompletion tid:" + tId + " xaResource:" + xaResource);
final XidImpl xid = new XidImpl(tId.getBytes());
ForeignRecoveryContext foreignRecoveryContext =
ForeignRecoveryContextManager.getInstance().getForeignRecoveryContext(xid);
if (WSATHelper.isDebugEnabled())
debug("replayCompletion() tid=" + tId + " xid=" + xid + " foreignRecoveryContext=" + foreignRecoveryContext);
if (foreignRecoveryContext == null) {
try {
xaResource.rollback(xid);
ForeignRecoveryContextManager.getInstance().delete(xid);
} catch (XAException xae) {
debug("replayCompletion() tid=" + tId + " (" + xid + "), XAException ("
+ JTAHelper.xaErrorCodeToString(xae.errorCode, false) + ") rolling back imported transaction: " + xae);
throw new WSATException("XAException on rollback of subordinate in response to replayCompletion for "
+ xid + "(tid=" + tId + ")", xae);
}
}
// if the transaction exists, then a completion retry for the resource will
// occur in due time. There isn't a mechanism currently to speed
// up the retry in order to respond immediately.
}
public EndpointReference getParentReference(Xid xid) {
debug("getParentReference xid:"+xid);
if (xid == null) throw new IllegalArgumentException("No subordinate transaction parent reference as xid is null");
ForeignRecoveryContext foreignRecoveryContext =
ForeignRecoveryContextManager.getInstance().getForeignRecoveryContext(xid);
if (foreignRecoveryContext == null)
throw new AssertionError("No recovery context associated with transaction " + xid);
return foreignRecoveryContext.getEndpointReference();
}
private void debug(String msg){
LOGGER.log(Level.INFO, msg);
}
}