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Java EE Connector Architecture Runtime for GlassFish
/*
* Copyright (c) 2022 Contributors to the Eclipse Foundation
* 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 Public License v. 2.0, which is available at
* http://www.eclipse.org/legal/epl-2.0.
*
* This Source Code may also be made available under the following Secondary
* Licenses when the conditions for such availability set forth in the
* Eclipse Public License v. 2.0 are satisfied: GNU General Public License,
* version 2 with the GNU Classpath Exception, which is available at
* https://www.gnu.org/software/classpath/license.html.
*
* SPDX-License-Identifier: EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0
*/
package com.sun.enterprise.resource.rm;
import static java.util.logging.Level.FINEST;
import static java.util.logging.Level.INFO;
import static java.util.logging.Level.SEVERE;
import static java.util.logging.Level.WARNING;
import java.util.logging.Level;
import java.util.logging.Logger;
import org.glassfish.api.invocation.ComponentInvocation;
import org.glassfish.api.invocation.InvocationException;
import com.sun.appserv.connectors.internal.api.PoolingException;
import com.sun.enterprise.connectors.ConnectorRuntime;
import com.sun.enterprise.resource.ResourceHandle;
import com.sun.enterprise.transaction.api.JavaEETransactionManager;
import com.sun.logging.LogDomains;
import jakarta.transaction.SystemException;
import jakarta.transaction.Transaction;
/**
* Resource Manager for any resource request from a component.
*
* @author Binod PG
*/
public class ResourceManagerImpl implements ResourceManager {
private static final Logger LOG = LogDomains.getLogger(ResourceManagerImpl.class, LogDomains.RSR_LOGGER);
/**
* Returns the transaction component is participating.
*
* @return Handle to the Transaction object.
* @throws PoolingException
*/
@Override
public Transaction getTransaction() throws PoolingException {
ComponentInvocation componentInvocation = getCurrentInvocation();
if (componentInvocation == null) {
try {
return ConnectorRuntime.getRuntime().getTransaction();
} catch (Exception ex) {
return null;
}
}
return (Transaction) componentInvocation.getTransaction();
}
/**
* Returns the component invoking resource request.
*
* @return Handle to the component.
*/
@Override
public Object getComponent() {
ComponentInvocation componentInvocation = getCurrentInvocation();
if (componentInvocation == null) {
return null;
}
return componentInvocation.getInstance();
}
/**
* Enlist the ResourceHandle in the transaction
*
* @param h ResourceHandle object
* @throws PoolingException
*/
@Override
public void enlistResource(ResourceHandle resourceHandle) throws PoolingException {
registerResource(resourceHandle);
}
/**
* Register the ResourceHandle in the transaction
*
* @param handle ResourceHandle object
* @throws PoolingException
*/
@Override
public void registerResource(ResourceHandle handle) throws PoolingException {
try {
JavaEETransactionManager transactionManager = getTransactionManager();
// Enlist if necessary
if (handle.isTransactional()) {
ComponentInvocation componentInvocation = getCurrentInvocation();
Transaction transaction = null;
if (componentInvocation == null) {
// Go to the tm and get the transaction
// This is mimicking the current behavior of the SystemResourceManagerImpl registerResource
// method/ in that, you return the transaction from the TxManager
try {
transaction = transactionManager.getTransaction();
} catch (Exception e) {
transaction = null;
LOG.log(INFO, e.getMessage());
}
} else {
transaction = (Transaction) componentInvocation.getTransaction();
transactionManager.registerComponentResource(handle);
}
if (transaction != null) {
try {
transactionManager.enlistResource(transaction, handle);
} catch (Exception ex) {
if (LOG.isLoggable(Level.FINE)) {
LOG.fine("Exception whle trying to enlist resource " + ex.getMessage());
}
// If transactional, remove the connection handle from the
// component's resource list as there has been exception attempting
// to enlist the resource
if (componentInvocation != null) {
LOG.fine("Attempting to unregister component resource");
transactionManager.unregisterComponentResource(handle);
}
throw ex;
}
}
}
} catch (Exception ex) {
LOG.log(SEVERE, "poolmgr.component_register_exception", ex);
throw new PoolingException(ex.toString(), ex);
}
}
// Overridden by the LazyEnlistableResourceManager to be a No-Op
protected void enlist(JavaEETransactionManager transactionManager, Transaction transaction, ResourceHandle resourceHandle) throws PoolingException {
try {
transactionManager.enlistResource(transaction, resourceHandle);
} catch (Exception e) {
throw new PoolingException(e.getMessage(), e);
}
}
/**
* Get's the component's transaction and marks it for rolling back.
*/
@Override
public void rollBackTransaction() {
JavaEETransactionManager transactionManager = getTransactionManager();
Transaction transaction = null;
try {
ComponentInvocation componentInvocation = getCurrentInvocation();
if (componentInvocation == null) {
// Go to the transactionManager and get the transaction.
// This is mimicking the current behavior of
// the SystemResourceManagerImpl registerResource method
// in that, you return the transaction from the TxManager
try {
transaction = transactionManager.getTransaction();
} catch (Exception e) {
transaction = null;
LOG.log(INFO, e.getMessage());
}
} else {
transaction = (Transaction) componentInvocation.getTransaction();
}
if (transaction != null) {
transaction.setRollbackOnly();
}
} catch (SystemException ex) {
LOG.log(WARNING, "poolmgr.system_exception", ex);
} catch (IllegalStateException ex) {
LOG.log(FINEST, "Ignoring IllegalStateException.", ex);
}
}
/**
* delist the ResourceHandle from the transaction
*
* @param resource ResourceHandle object
* @param xaresFlag flag indicating transaction success. This can be XAResource.TMSUCCESS or XAResource.TMFAIL
* @exception PoolingException
*/
@Override
public void delistResource(ResourceHandle resource, int xaresFlag) {
unregisterResource(resource, xaresFlag);
}
/**
* Unregister the ResourceHandle from the transaction
*
* @param resource ResourceHandle object
* @param xaresFlag flag indicating transaction success. This can be XAResource.TMSUCCESS or XAResource.TMFAIL
* @throws PoolingException
*/
@Override
public void unregisterResource(ResourceHandle resource, int xaresFlag) {
JavaEETransactionManager transactionManager = getTransactionManager();
Transaction transaction = null;
try {
// Delist with TMSUCCESS if necessary
if (resource.isTransactional()) {
ComponentInvocation componentInvocation = getCurrentInvocation();
if (componentInvocation == null) {
// Go to the transactionManager and get the transaction
// This is mimicking the current behavior of
// the SystemResourceManagerImpl registerResource method
// in that, you return the transaction from the TxManager
try {
transaction = transactionManager.getTransaction();
} catch (Exception e) {
transaction = null;
LOG.log(INFO, e.getMessage());
}
} else {
transaction = (Transaction) componentInvocation.getTransaction();
transactionManager.unregisterComponentResource(resource);
}
if (transaction != null && resource.isEnlisted()) {
transactionManager.delistResource(transaction, resource, xaresFlag);
}
}
} catch (SystemException ex) {
LOG.log(WARNING, "poolmgr.system_exception", ex);
} catch (IllegalStateException ex) {
// Transaction aborted. Do nothing
LOG.log(FINEST, "Ignoring IllegalStateException.", ex);
} catch (InvocationException ex) {
LOG.log(FINEST, "Ignoring InvocationException.", ex);
// UnregisterResource is called outside of component context
// likely to be container-forced destroy. Do nothing
}
}
private static ComponentInvocation getCurrentInvocation() {
return ConnectorRuntime.getRuntime().getInvocationManager().getCurrentInvocation();
}
private static JavaEETransactionManager getTransactionManager() {
return ConnectorRuntime.getRuntime().getTransactionManager();
}
}
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