/*
* $Id$
*
* Copyright 2006, The jCoderZ.org Project. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
* * Neither the name of the jCoderZ.org Project nor the names of
* its contributors may be used to endorse or promote products
* derived from this software without specific prior written
* permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS "AS IS" AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS AND CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package org.jcoderz.commons.connector.http;
import java.io.PrintWriter;
import java.util.Iterator;
import java.util.Set;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.resource.spi.ConnectionManager;
import javax.resource.spi.ConnectionRequestInfo;
import javax.resource.spi.ManagedConnection;
import javax.resource.spi.ManagedConnectionFactory;
import javax.security.auth.Subject;
/**
* Managed Connection Factory used by the Application Server to create
* a non-managed factory and connection for the application.
*
*/
public final class HttpManagedConnectionFactoryImpl
implements ManagedConnectionFactory
{
/** The serial UID generated for revision 1.4 */
static final long serialVersionUID = 5601979166228177337L;
/** Class name for use in logging. */
private static final transient
String CLASSNAME = HttpManagedConnectionFactoryImpl.class.getName();
/** The logger in use. */
private static final transient
Logger logger = Logger.getLogger(CLASSNAME);
/** The system specific line separator */
private static final String
LINE_FEED = System.getProperty("line.separator");
private transient HttpManagedConnectionImpl mManagedConnection = null;
private transient int mAmountOfMatchingConnections = 0;
private transient int mAmountOfOpenMatchingConnections = 0;
/** The URL to connect to. */
private String mUrl;
/** The maximum amount of open connections. */
private Integer mMaxConnections;
/** {@inheritDoc} */
public Object createConnectionFactory (ConnectionManager cm)
{
return new HttpConnectionFactoryImpl(this, cm);
}
/** {@inheritDoc} */
public Object createConnectionFactory ()
{
return new HttpConnectionFactoryImpl(this, null);
}
/** {@inheritDoc} */
public ManagedConnection createManagedConnection (
Subject subject, ConnectionRequestInfo cri)
{
return new HttpManagedConnectionImpl(this, cri);
}
/** {@inheritDoc} */
public ManagedConnection matchManagedConnections (
Set connectionSet,
Subject subject,
ConnectionRequestInfo cri)
{
final String methodName = "matchManagedConnections";
// trace message
if (logger.isLoggable(Level.FINEST))
{
logger.finest("Connections in pool=" + connectionSet.size());
logger.finest("ConnectionRequestInfo: " + cri);
}
//
mManagedConnection = null;
mAmountOfOpenMatchingConnections = 0;
mAmountOfMatchingConnections = 0;
final Iterator it = connectionSet.iterator();
while (it.hasNext())
{
final Object obj = it.next();
if (obj instanceof ManagedConnection)
{
final HttpManagedConnectionImpl mc
= (HttpManagedConnectionImpl) obj;
// If there are no special requirements about the
// ManagedConnection, the first ManagedConnection in
// the pool is good enough
if (cri == null)
{
logger.finest("No ConnectionRequestInfo specified.");
logger.finest("Found connection in pool: " + mc);
mManagedConnection = mc;
break; // found managed connection - without cri
}
// otherwise try to find a managed connection with an appropriate
// CtsConnectionRequestInfo
findMatchingConnection(mc, cri);
}
}
if (mManagedConnection == null)
{
logger.finest("No matching connection found in pool.");
}
else
{
if (logger.isLoggable(Level.FINEST))
{
logger.log(Level.FINEST, LINE_FEED
+ "---------- Connection POOL -----------" + LINE_FEED
+ " Connection to: " + cri.toString() + LINE_FEED
+ " Total: " + mAmountOfMatchingConnections + LINE_FEED
+ " Open: " + mAmountOfOpenMatchingConnections + LINE_FEED
+ "--------------------------------------" + LINE_FEED
+ LINE_FEED);
}
logger.exiting(CLASSNAME, methodName, mManagedConnection);
}
return mManagedConnection;
}
/**
* Tries to match the given connection with the used connection request
* info and calculates the pool amounts.
*
* @param mc
* the managed connection to match
* @param cri
* the connection request info to match with
*/
private void findMatchingConnection (
HttpManagedConnectionImpl mc, ConnectionRequestInfo cri)
{
// otherwise try to find a managed connection with an appropriate
// CtsConnectionRequestInfo
if (mc.getConnectionRequestInfo().equals(cri))
{
if (mManagedConnection == null)
{
logger.finest("Found matching connection in pool: " + mc);
mManagedConnection = mc; // found managed connection - with cri
}
mAmountOfMatchingConnections++;
if (mc.isOpen())
{
mAmountOfOpenMatchingConnections++;
}
}
}
/** {@inheritDoc} */
public void setLogWriter (PrintWriter arg0)
{
// not used
}
/** {@inheritDoc} */
public PrintWriter getLogWriter ()
{
// not used
return null;
}
/**
* Sets the configuration parameter "MaxConnections"
* defined in the deployment descriptor.
*
* @param connections max count of connections
*/
public void setMaxConnections (Integer connections)
{
final String methodName = "setMaxConnection";
if (logger.isLoggable(Level.FINER))
{
final Object[] args = {connections};
logger.entering(CLASSNAME, methodName, args);
}
mMaxConnections = connections;
logger.exiting(CLASSNAME, methodName);
}
/**
* Gets the configuration parameter "MaxConnections".
*
* @return Long - the maximum number of connections
*/
public Integer getMaxConnections ()
{
return mMaxConnections;
}
/**
* Set configuration parameter "Url" as defined in deployment descriptor.
*
* @param url the url connecting to
*/
public void setUrl (String url)
{
final String methodName = "setUrl";
if (logger.isLoggable(Level.FINER))
{
final Object[] args = {url};
logger.entering(CLASSNAME, methodName, args);
}
mUrl = url;
logger.exiting(CLASSNAME, methodName);
}
/**
* Gets the configuration parameter "Url".
*
* @return String - the url connection to
*/
public String getUrl ()
{
return mUrl;
}
}