/*
* Copyright (c) 1998-2011 Caucho Technology -- all rights reserved
*
* This file is part of Resin(R) Open Source
*
* Each copy or derived work must preserve the copyright notice and this
* notice unmodified.
*
* Resin Open Source is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* Resin Open Source is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, or any warranty
* of NON-INFRINGEMENT. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License
* along with Resin Open Source; if not, write to the
*
* Free Software Foundation, Inc.
* 59 Temple Place, Suite 330
* Boston, MA 02111-1307 USA
*
* @author Scott Ferguson
*/
package com.caucho.sql;
import java.io.PrintWriter;
import java.sql.SQLException;
import java.util.HashSet;
import java.util.Iterator;
import java.util.Set;
import java.util.logging.Logger;
import javax.resource.ResourceException;
import javax.resource.spi.ConnectionManager;
import javax.resource.spi.ConnectionRequestInfo;
import javax.resource.spi.ManagedConnection;
import javax.resource.spi.ManagedConnectionFactory;
import javax.resource.spi.ResourceAdapter;
import javax.resource.spi.ValidatingManagedConnectionFactory;
import javax.security.auth.Subject;
import com.caucho.cloud.network.ClusterServer;
import com.caucho.env.dbpool.IdlePoolSet;
import com.caucho.server.cluster.Server;
import com.caucho.util.L10N;
/**
* The managed factory implementation.
*/
@SuppressWarnings("serial")
public class ManagedFactoryImpl
implements ManagedConnectionFactory, ValidatingManagedConnectionFactory
{
protected static final Logger log
= Logger.getLogger(ManagedFactoryImpl.class.getName());
private static final L10N L = new L10N(ManagedFactoryImpl.class);
private DBPoolImpl _dbPool;
private DriverConfig []_drivers;
private DriverConfig []_backupDrivers;
private long _roundRobin;
ManagedFactoryImpl(DBPoolImpl dbPool,
DriverConfig []drivers,
DriverConfig []backupDrivers)
{
_dbPool = dbPool;
_drivers = drivers;
_backupDrivers = backupDrivers;
Server server = Server.getCurrent();
if (server != null) {
ClusterServer selfServer = server.getSelfServer();
if (selfServer != null && _drivers.length > 1)
_roundRobin = selfServer.getIndex() % _drivers.length;
}
}
/**
* Returns the DB pool.
*/
public DBPoolImpl getDBPool()
{
return _dbPool;
}
/**
* Returns the primary URL
*/
public String getURL()
{
if (_drivers.length > 0)
return _drivers[0].getURL();
else if (_backupDrivers.length > 0)
return _backupDrivers[0].getURL();
else
return null;
}
/**
* Returns the connection config.
*/
ConnectionConfig getConnectionConfig()
{
return _dbPool.getConnectionConfig();
}
/**
* Creates the data source the user sees.
*/
public Object createConnectionFactory(ConnectionManager connManager)
throws ResourceException
{
return new UserDataSource(this, connManager);
}
/**
* Creates the data source the user sees. Not needed in this case,
* since ManagedFactoryImpl is only allowed in Resin.
*/
public Object createConnectionFactory()
throws ResourceException
{
throw new UnsupportedOperationException();
}
/**
* Creates the underlying managed connection.
*/
public ManagedConnection
createManagedConnection(Subject subject,
ConnectionRequestInfo requestInfo)
throws ResourceException
{
Credential credential = (Credential) requestInfo;
SQLException exn = null;
for (int i = 0; i < _drivers.length; i++) {
int index = (int) (_roundRobin++ % _drivers.length);
DriverConfig driver = _drivers[index];
try {
return new ManagedConnectionImpl(this,
driver,
_dbPool.getConnectionConfig(),
credential);
} catch (SQLException e) {
exn = e;
}
}
for (int i = 0; i < _backupDrivers.length; i++) {
int index = (int) (_roundRobin++ % _backupDrivers.length);
DriverConfig driver = _backupDrivers[index];
try {
return new ManagedConnectionImpl(this,
driver,
_dbPool.getConnectionConfig(),
credential);
} catch (SQLException e) {
exn = e;
}
}
if (exn != null)
throw new ResourceException(exn);
else
throw new ResourceException(L.l("Can't create a database connection because no drivers have been defined."));
}
/**
* Creates the underlying managed connection.
*/
public ManagedConnection
matchManagedConnections(Set connSet,
Subject subject,
ConnectionRequestInfo requestInfo)
throws ResourceException
{
if (connSet instanceof IdlePoolSet) {
IdlePoolSet idle = (IdlePoolSet) connSet;
ManagedConnectionImpl mConn = (ManagedConnectionImpl) idle.first();
if (mConn == null)
return null;
Credential mCredentials = mConn.getCredentials();
if (requestInfo == mCredentials
|| requestInfo != null && requestInfo.equals(mCredentials)) {
return mConn;
}
}
Iterator iter = connSet.iterator();
while (iter.hasNext()) {
ManagedConnectionImpl mConn = (ManagedConnectionImpl) iter.next();
Credential mCredentials = mConn.getCredentials();
if (requestInfo == mCredentials
|| requestInfo != null && requestInfo.equals(mCredentials)) {
return mConn;
}
}
return null;
}
/**
* Returns any invalid connections.
*/
public Set getInvalidConnections(Set connSet)
throws ResourceException
{
Iterator iter = connSet.iterator();
HashSet invalidSet = null;
while (iter.hasNext()) {
ManagedConnectionImpl mConn = (ManagedConnectionImpl) iter.next();
if (! mConn.isValid()) {
if (invalidSet == null)
invalidSet = new HashSet();
invalidSet.add(mConn);
}
}
return invalidSet;
}
public void setLogWriter(PrintWriter out)
throws ResourceException
{
}
public PrintWriter getLogWriter()
throws ResourceException
{
return null;
}
public ResourceAdapter getResourceAdapter()
{
return null;
}
public void setResourceAdapter(ResourceAdapter adapter)
{
}
}