/*
* JBoss, Home of Professional Open Source.
* Copyright 2008, Red Hat Middleware LLC, and individual contributors
* as indicated by the @author tags. See the copyright.txt file in the
* distribution for a full listing of individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software 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. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package javax.management.remote;
import java.io.IOException;
import java.net.MalformedURLException;
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import javax.management.MBeanServer;
import org.jboss.logging.Logger;
import org.jboss.mx.remoting.connector.ConnectorFactoryUtil;
/**
* @author <a href="mailto:tom@jboss.org">Tom Elrod</a>
*/
public class JMXConnectorServerFactory
{
public static final String DEFAULT_CLASS_LOADER = "jmx.remote.default.class.loader";
public static final String DEFAULT_CLASS_LOADER_NAME = "jmx.remote.default.class.loader.name";
public static final String PROTOCOL_PROVIDER_PACKAGES = "jmx.remote.protocol.provider.pkgs";
public static final String PROTOCOL_PROVIDER_CLASS_LOADER = "jmx.remote.protocol.provider.class.loader";
private static final String SERVER_CLASSNAME = "ServerProvider";
private static final String DEFAULT_PROTOCOL_PROVIDER_PACKAGE = "org.jboss.mx.remoting.provider";
protected static Logger log = Logger.getLogger(JMXConnectorServerFactory.class.getName());
private JMXConnectorServerFactory()
{
// per spec, can not have any public instances of this class.
}
public static JMXConnectorServer newJMXConnectorServer(JMXServiceURL serviceURL,
Map environment,
MBeanServer mbeanServer)
throws IOException
{
JMXConnectorServer connectorServer = null;
if(serviceURL != null)
{
String protocol = serviceURL.getProtocol();
protocol = ConnectorFactoryUtil.normalizeProtocol(protocol);
Map localEnvironment = new HashMap();
if(environment != null)
{
localEnvironment = new HashMap(environment);
}
// now need to check envrionment map for loading info
if(localEnvironment != null)
{
ConnectorFactoryUtil.validateEnvironmentMap(localEnvironment);
ClassLoader classLoader = ConnectorFactoryUtil.locateClassLoader(localEnvironment,
PROTOCOL_PROVIDER_CLASS_LOADER);
List providerPackages = ConnectorFactoryUtil.locateProviderPackage(localEnvironment,
PROTOCOL_PROVIDER_PACKAGES);
List providers = loadProviders(providerPackages, classLoader,
protocol);
for(int i = 0; i < providers.size() && connectorServer == null; i++)
{
JMXConnectorServerProvider provider = (JMXConnectorServerProvider) providers.get(i);
connectorServer = provider.newJMXConnectorServer(serviceURL,
Collections.unmodifiableMap(localEnvironment),
mbeanServer);
}
}
}
else
{
throw new NullPointerException("Can not create JMXConnectorServer using null JMXServiceURL.");
}
return connectorServer;
}
private static List loadProviders(List providerPackages, ClassLoader classLoader,
String protocol)
throws JMXProviderException, MalformedURLException
{
List providers = new ArrayList();
if(providerPackages != null)
{
for(int x = 0; x < providerPackages.size(); x++)
{
String providerPackage = (String) providerPackages.get(x);
JMXConnectorServerProvider providerInstance = loadProvider(providerPackage, protocol, classLoader);
providers.add(providerInstance);
}
}
// now add default providers for this implementation if exist
if(providers.size() == 0)
{
JMXConnectorServerProvider localProvider = loadProvider(DEFAULT_PROTOCOL_PROVIDER_PACKAGE,
protocol,
Thread.currentThread().getContextClassLoader());
if(localProvider != null)
{
providers.add(localProvider);
}
else
{
throw new MalformedURLException("Error locating provider for protocol " + protocol);
}
}
return providers;
}
private static JMXConnectorServerProvider loadProvider(String providerPackage, String protocol, ClassLoader classLoader)
throws JMXProviderException
{
JMXConnectorServerProvider providerInstance = null;
String providerClassName = providerPackage + "." + protocol + "." + SERVER_CLASSNAME;
try
{
Class providerClass = Class.forName(providerClassName,
true,
classLoader);
try
{
providerInstance = (JMXConnectorServerProvider) providerClass.newInstance();
}
catch(ClassCastException ccex)
{
throw new JMXProviderException("Class " + providerClass +
" does not implement JMXConnectorServerProvider interface.");
}
catch(Exception e)
{
throw new JMXProviderException("Error loading provider instance.", e);
}
}
catch(ClassNotFoundException e)
{
log.warn("Could not load provider class: " + providerClassName);
}
catch(Exception ex)
{
throw new JMXProviderException("Error loading provider class (" + providerClassName + ")", ex);
}
return providerInstance;
}
}