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package com.sun.enterprise.resource.rm;
import java.util.logging.*;
import javax.transaction.*;
import com.sun.logging.*;
import com.sun.enterprise.transaction.api.JavaEETransactionManager;
import com.sun.enterprise.connectors.ConnectorRuntime;
import com.sun.appserv.connectors.internal.api.PoolingException;
import com.sun.enterprise.resource.*;
import org.glassfish.api.invocation.InvocationManager;
import org.glassfish.api.invocation.ComponentInvocation;
import org.glassfish.api.invocation.InvocationException;
/**
* Resource Manager for any resource request from a component.
*
* @author Binod PG
*/
public class ResourceManagerImpl implements ResourceManager {
static Logger _logger = null;
static {
_logger = LogDomains.getLogger(ResourceManagerImpl.class, LogDomains.RSR_LOGGER);
}
/**
* Returns the transaction component is participating.
*
* @return Handle to the <code>Transaction</code> object.
* @exception <code>PoolingException<code>
*/
public Transaction getTransaction() throws PoolingException {
InvocationManager invmgr = ConnectorRuntime.getRuntime().getInvocationManager();
ComponentInvocation inv = invmgr.getCurrentInvocation();
if (inv == null) {
try {
return ConnectorRuntime.getRuntime().getTransaction();
} catch (Exception ex) {
return null;
}
}
return (Transaction) inv.getTransaction();
}
/**
* Returns the component invoking resource request.
*
* @return Handle to the component.
*/
public Object getComponent(){
InvocationManager invmgr = ConnectorRuntime.getRuntime().getInvocationManager();
ComponentInvocation inv = invmgr.getCurrentInvocation();
if (inv == null) {
return null;
}
return inv.getInstance();
}
/**
* Enlist the <code>ResourceHandle</code> in the transaction
*
* @param h <code>ResourceHandle</code> object
* @exception <code>PoolingException</code>
*/
public void enlistResource(ResourceHandle h) throws PoolingException{
registerResource(h);
}
/**
* Register the <code>ResourceHandle</code> in the transaction
*
* @param handle <code>ResourceHandle</code> object
* @exception <code>PoolingException</code>
*/
public void registerResource(ResourceHandle handle)
throws PoolingException {
try {
Transaction tran = null;
JavaEETransactionManager tm = ConnectorRuntime.getRuntime().getTransactionManager();
// enlist if necessary
if (handle.isTransactional()) {
InvocationManager invmgr = ConnectorRuntime.getRuntime().getInvocationManager();
ComponentInvocation inv = invmgr.getCurrentInvocation();
if (inv == null) {
//throw new InvocationException();
//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 {
tran = tm.getTransaction();
} catch( Exception e ) {
tran = null;
_logger.log(Level.INFO, e.getMessage());
}
} else {
tran = (Transaction) inv.getTransaction();
tm.registerComponentResource(handle);
}
if (tran != null) {
try{
tm.enlistResource(tran, handle);
} catch (Exception ex) {
if(_logger.isLoggable(Level.FINE)) {
_logger.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(inv != null) {
if(_logger.isLoggable(Level.FINE)) {
_logger.fine("Attempting to unregister component resource");
}
tm.unregisterComponentResource(handle);
}
throw ex;
}
}
}
} catch (Exception ex) {
_logger.log(Level.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 tm, Transaction tran,
ResourceHandle h ) throws PoolingException {
try {
tm.enlistResource( tran, h );
} catch( Exception e ) {
PoolingException pe = new PoolingException( e.getMessage() );
pe.initCause( e );
throw pe;
}
}
/**
* Get's the component's transaction and marks it for rolling back.
*/
public void rollBackTransaction() {
InvocationManager invmgr = ConnectorRuntime.getRuntime().getInvocationManager();
JavaEETransactionManager tm = ConnectorRuntime.getRuntime().getTransactionManager();
Transaction tran = null;
try {
ComponentInvocation inv = invmgr.getCurrentInvocation();
if (inv == null) {
//throw new InvocationException();
//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 {
tran = tm.getTransaction();
} catch( Exception e ) {
tran = null;
_logger.log(Level.INFO, e.getMessage());
}
} else {
tran = (Transaction) inv.getTransaction();
}
if (tran != null) {
tran.setRollbackOnly();
}
} catch (SystemException ex) {
_logger.log(Level.WARNING,"poolmgr.system_exception",ex);
} catch (IllegalStateException ex) {
// ignore
}
}
/**
* delist the <code>ResourceHandle</code> from the transaction
*
* @param resource <code>ResourceHandle</code> object
* @param xaresFlag flag indicating transaction success. This can
* be XAResource.TMSUCCESS or XAResource.TMFAIL
* @exception <code>PoolingException</code>
*/
public void delistResource(ResourceHandle resource, int xaresFlag) {
unregisterResource(resource,xaresFlag);
}
/**
* Unregister the <code>ResourceHandle</code> from the transaction
*
* @param resource <code>ResourceHandle</code> object
* @param xaresFlag flag indicating transaction success. This can
* be XAResource.TMSUCCESS or XAResource.TMFAIL
* @exception <code>PoolingException</code>
*/
public void unregisterResource(ResourceHandle resource,
int xaresFlag) {
JavaEETransactionManager tm = ConnectorRuntime.getRuntime().getTransactionManager();
Transaction tran = null;
try {
// delist with TMSUCCESS if necessary
if (resource.isTransactional()) {
InvocationManager invmgr = ConnectorRuntime.getRuntime().getInvocationManager();
ComponentInvocation inv = invmgr.getCurrentInvocation();
if (inv == null) {
//throw new InvocationException();
//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 {
tran = tm.getTransaction();
} catch (Exception e) {
tran = null;
_logger.log(Level.INFO, e.getMessage());
}
} else {
tran = (Transaction) inv.getTransaction();
tm.unregisterComponentResource(resource);
}
if (tran != null && resource.isEnlisted()) {
tm.delistResource(tran, resource, xaresFlag);
}
}
} catch (SystemException ex) {
_logger.log(Level.WARNING, "poolmgr.system_exception", ex);
} catch (IllegalStateException ex) {
// transaction aborted. Do nothing
} catch (InvocationException ex) {
// unregisterResource is called outside of component context
// likely to be container-forced destroy. Do nothing
}
}
}