/**
* Redistribution and use of this software and associated documentation
* ("Software"), with or without modification, are permitted provided
* that the following conditions are met:
*
* 1. Redistributions of source code must retain copyright
* statements and notices. Redistributions must also contain a
* copy of this document.
*
* 2. 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.
*
* 3. The name "Exolab" must not be used to endorse or promote
* products derived from this Software without prior written
* permission of Exoffice Technologies. For written permission,
* please contact info@exolab.org.
*
* 4. Products derived from this Software may not be called "Exolab"
* nor may "Exolab" appear in their names without prior written
* permission of Exoffice Technologies. Exolab is a registered
* trademark of Exoffice Technologies.
*
* 5. Due credit should be given to the Exolab Project
* (http://www.exolab.org/).
*
* THIS SOFTWARE IS PROVIDED BY EXOFFICE TECHNOLOGIES AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESSED 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
* EXOFFICE TECHNOLOGIES OR ITS 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.
*
* Copyright 2005 (C) Exoffice Technologies Inc. All Rights Reserved.
*
* $Id: ConnectorService.java,v 1.4 2006/02/23 11:17:40 tanderson Exp $
*/
package org.exolab.jms.server;
import java.lang.reflect.Constructor;
import javax.naming.Context;
import javax.naming.NamingException;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.exolab.jms.config.Configuration;
import org.exolab.jms.config.Connector;
import org.exolab.jms.config.ConnectorHelper;
import org.exolab.jms.config.ConnectorResource;
import org.exolab.jms.config.types.SchemeType;
import org.exolab.jms.net.connector.Authenticator;
import org.exolab.jms.service.Service;
import org.exolab.jms.service.ServiceException;
import org.exolab.jms.common.threads.ThreadPoolFactory;
/**
* Service that manages the connectors configured for the server.
*
* @author <a href="mailto:tma@netspace.net.au">Tim Anderson</a>
* @version $Revision: 1.4 $ $Date: 2006/02/23 11:17:40 $
*/
public class ConnectorService extends Service {
/**
* The configuration.
*/
private final Configuration _config;
/**
* The authenticator, for authenticating clients.
*/
private final Authenticator _authenticator;
/**
* The factory for <code>ServerConnection</code> instances.
*/
private final ServerConnectionFactory _factory;
/**
* The admin connection manager.
*/
private final AdminConnectionManager _manager;
/**
* The name service.
*/
private final NameService _names;
/**
* The thread pool factory.
*/
private final ThreadPoolFactory _threads;
/**
* The interfaces to this server. One interface is constructed for each
* configured connector.
*/
private ServerConnector[] _interfaces = null;
/**
* The logger.
*/
private static final Log _log = LogFactory.getLog(ConnectorService.class);
/**
* Construct a new <code>ConnectorService</code>.
*
* @param config the configuration to use
* @param names the name service
*/
public ConnectorService(Configuration config,
Authenticator authenticator,
ServerConnectionFactory factory,
AdminConnectionManager manager,
NameService names,
ThreadPoolFactory threads) {
super("ConnectorService");
if (config == null) {
throw new IllegalArgumentException("Argument 'config' is null");
}
if (authenticator == null) {
throw new IllegalArgumentException(
"Argument 'authenticator' is null");
}
if (factory == null) {
throw new IllegalArgumentException("Argument 'factory' is null");
}
if (manager == null) {
throw new IllegalArgumentException("Argument 'manager' is null");
}
if (names == null) {
throw new IllegalArgumentException("Arguement 'names' is null");
}
if (threads == null) {
throw new IllegalArgumentException("Argument 'threads' is null");
}
_config = config;
_authenticator = authenticator;
_factory = factory;
_manager = manager;
_names = names;
_threads = threads;
}
/**
* Start the service.
*
* @throws ServiceException if the service fails to start
*/
protected void doStart() throws ServiceException {
try {
Context context = _names.getInitialContext();
initConnectors(context);
} catch (NamingException exception) {
throw new ServiceException(exception.getMessage(), exception);
}
}
/**
* Stop the service.
*
* @throws ServiceException if the service fails to stop
*/
protected void doStop() throws ServiceException {
for (int i = 0; i < _interfaces.length; ++i) {
_interfaces[i].close();
}
}
/**
* Creates an interface to the server for each configured connector.
*
* @param context the initial context
* @throws NamingException if administered objects cannot be bound in JNDI
* @throws ServiceException if an interface can't be created
*/
protected void initConnectors(Context context)
throws NamingException, ServiceException {
Connector[] connectors = _config.getConnectors().getConnector();
_interfaces = new ServerConnector[connectors.length];
for (int i = 0; i < connectors.length; ++i) {
Connector connector = connectors[i];
_interfaces[i] = initConnector(connector, context);
}
}
/**
* Create an interface to the server for the specified connector.
*
* @param connector the connector
* @param context the initial context
* @return the interface corresponding to <code>connector</code>
* @throws NamingException if administered objects cannot be bound in JNDI
* @throws ServiceException if the interface can't be created
*/
protected ServerConnector initConnector(Connector connector,
Context context)
throws NamingException, ServiceException {
_log.info("Creating server interface for the " + connector.getScheme()
+ " connector");
ServerConnector server;
ConnectorResource resource = ConnectorHelper.getConnectorResource(
connector.getScheme(), _config);
String className = resource.getServer().getImplementationClass();
Class clazz;
try {
clazz = Class.forName(className);
} catch (ClassNotFoundException exception) {
throw new ServiceException("Failed to load class " + className);
}
if (!ServerConnector.class.isAssignableFrom(clazz)) {
throw new ServiceException(
"Class " + className
+ " does not implement ServerConnector");
}
try {
SchemeType scheme = connector.getScheme();
Constructor ctor = clazz.getConstructor(new Class[]{
SchemeType.class, Configuration.class,
Authenticator.class, ServerConnectionFactory.class,
AdminConnectionManager.class, NameService.class,
ThreadPoolFactory.class});
server = (ServerConnector) ctor.newInstance(new Object[]{
scheme, _config, _authenticator, _factory, _manager, _names,
_threads});
} catch (NoSuchMethodException ignore) {
// fall back to the default constructor
try {
server = (ServerConnector) clazz.newInstance();
} catch (Exception exception) {
throw new ServiceException(exception.getMessage(), exception);
}
} catch (Exception exception) {
throw new ServiceException(exception.getMessage(), exception);
}
_log.debug("Created an instance of " + className
+ " as a server interface");
// initialise the interface
server.init();
// bind any configured connection factories
server.bindConnectionFactories(context);
return server;
}
}