/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.apache.ode.il.txutil;
import javax.transaction.HeuristicMixedException;
import javax.transaction.HeuristicRollbackException;
import javax.transaction.InvalidTransactionException;
import javax.transaction.NotSupportedException;
import javax.transaction.RollbackException;
import javax.transaction.Synchronization;
import javax.transaction.SystemException;
import javax.transaction.Transaction;
import javax.transaction.TransactionManager;
import javax.transaction.xa.XAResource;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.ode.il.config.OdeConfigProperties;
/**
* Does the dirty work of setting up / obtaining a TransactionManager based on the configuration in the {@link OdeConfigProperties} object.
*
*/
public class TxManager {
private static final Log __log = LogFactory.getLog(TxManager.class);
private OdeConfigProperties _odeConfig;
private boolean _debugTxn = false;
public TxManager(OdeConfigProperties props) {
if (props == null)
throw new NullPointerException("Must provide a configuration.");
_odeConfig = props;
_debugTxn=Boolean.valueOf(_odeConfig.getProperty("tx.debug","false"));
}
public TransactionManager createTransactionManager() throws TransactionConfigException {
String txFactoryName = _odeConfig.getTxFactoryClass();
__log.debug("Initializing transaction manager using " + txFactoryName);
try {
Class txFactClass = Class.forName(txFactoryName);
Object txFact = txFactClass.newInstance();
TransactionManager txMgr = (TransactionManager) txFactClass.getMethod("getTransactionManager", (Class[]) null).invoke(txFact);
if (__log.isDebugEnabled() && _debugTxn)
txMgr = new DebugTxMgr(txMgr);
return txMgr;
} catch (Exception e) {
__log.fatal("Couldn't initialize a transaction manager with factory: " + txFactoryName, e);
throw new TransactionConfigException("Couldn't initialize a transaction manager with factory: " + txFactoryName, e);
}
}
// Transactional debugging stuff, to track down all these little annoying bugs.
public static class DebugTxMgr implements TransactionManager {
protected TransactionManager _tm;
public DebugTxMgr(TransactionManager tm) {
_tm = tm;
}
public void begin() throws NotSupportedException, SystemException {
__log.debug("Txm begin");
_tm.begin();
}
public void commit() throws HeuristicMixedException, HeuristicRollbackException, IllegalStateException, RollbackException, SecurityException, SystemException {
__log.debug("Txm commit");
for (StackTraceElement traceElement : Thread.currentThread().getStackTrace()) {
__log.debug(traceElement.toString());
}
_tm.commit();
}
public int getStatus() throws SystemException {
__log.debug("Txm status");
return _tm.getStatus();
}
public Transaction getTransaction() throws SystemException {
Transaction tx = _tm.getTransaction();
__log.debug("Txm get tx " + tx);
return tx == null ? null : new DebugTx(tx);
}
public void resume(Transaction transaction) throws IllegalStateException, InvalidTransactionException, SystemException {
__log.debug("Txm resume");
_tm.resume(transaction);
}
public void rollback() throws IllegalStateException, SecurityException, SystemException {
__log.debug("Txm rollback");
_tm.rollback();
}
public void setRollbackOnly() throws IllegalStateException, SystemException {
__log.debug("Txm set rollback");
_tm.setRollbackOnly();
}
public void setTransactionTimeout(int i) throws SystemException {
__log.debug("Txm set tiemout " + i);
_tm.setTransactionTimeout(i);
}
public Transaction suspend() throws SystemException {
__log.debug("Txm suspend");
return _tm.suspend();
}
}
public static class DebugTx implements Transaction {
private Transaction _tx;
public DebugTx(Transaction tx) {
_tx = tx;
}
public void commit() throws HeuristicMixedException, HeuristicRollbackException, RollbackException, SecurityException, SystemException {
__log.debug("Tx commit");
_tx.commit();
}
public boolean delistResource(XAResource xaResource, int i) throws IllegalStateException, SystemException {
return _tx.delistResource(xaResource, i);
}
public boolean enlistResource(XAResource xaResource) throws IllegalStateException, RollbackException, SystemException {
return _tx.enlistResource(xaResource);
}
public int getStatus() throws SystemException {
return _tx.getStatus();
}
public void registerSynchronization(Synchronization synchronization) throws IllegalStateException, RollbackException, SystemException {
__log.debug("Synchronization registration on " + synchronization.getClass().getName());
_tx.registerSynchronization(synchronization);
}
public void rollback() throws IllegalStateException, SystemException {
__log.debug("Tx rollback");
_tx.rollback();
}
public void setRollbackOnly() throws IllegalStateException, SystemException {
__log.debug("Tx set rollback");
_tx.setRollbackOnly();
}
}
}