jmsserver.java

实现了Jms的服务器源码,支持多种适配器,DB,FTP,支持多种数据库

/**
 * 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 [e-mail].
 *
 * 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 2000-2004 (C) Exoffice Technologies Inc. All Rights Reserved.
 *
 * $Id: JmsServer.java,v 1.48.2.1 2004/05/06 11:35:09 tanderson Exp $
 */
package org.exolab.jms.server;

import java.io.PrintStream;
import java.lang.reflect.Constructor;
import java.util.ArrayList;

import javax.naming.Context;
import javax.naming.NamingException;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.log4j.xml.DOMConfigurator;

import org.exolab.core.service.ServiceException;
import org.exolab.core.service.ServiceManager;
import org.exolab.core.util.RmiRegistryService;
import org.exolab.jms.authentication.AuthenticationMgr;
import org.exolab.jms.config.Configuration;
import org.exolab.jms.config.ConfigurationManager;
import org.exolab.jms.config.Connector;
import org.exolab.jms.config.ConnectorHelper;
import org.exolab.jms.config.ConnectorResource;
import org.exolab.jms.config.LoggerConfiguration;
import org.exolab.jms.config.types.SchemeType;
import org.exolab.jms.events.BasicEventManager;
import org.exolab.jms.gc.GarbageCollectionService;
import org.exolab.jms.jndi.JndiServerIfc;
import org.exolab.jms.lease.LeaseManager;
import org.exolab.jms.messagemgr.DestinationManager;
import org.exolab.jms.messagemgr.MessageMgr;
import org.exolab.jms.persistence.DatabaseService;
import org.exolab.jms.scheduler.Scheduler;
import org.exolab.jms.threads.ThreadPoolManager;
import org.exolab.jms.util.CommandLine;
import org.exolab.jms.util.Version;


/**
 * This class contains the main line for instantiating the JMS Server. It
 * dynamically detemrines, from the configuration information which of the
 * servers to implement and then calls the init method on them.
 *
 * @version     $Revision: 1.48.2.1 $ $Date: 2004/05/06 11:35:09 $
 * @author      <a href="mailto:[e-mail]">Jim Alateras</a>
 * @author      <a href="mailto:[e-mail]">Tim Anderson</a>
 * @see         ConfigurationManager
 */
public class JmsServer {

    /**
     * The service manager
     */
    protected ServiceManager _services = null;

    /**
     * The interfaces to this server. One interface is constructed for
     * each configured connector.
     */
    private JmsServerIfc[] _interfaces = null;

    /**
     * The JNDI providers, when using embedded JNDI. One server is
     * constructed for each configured connector.
     */
    private JndiServerIfc[] _jndiInterfaces = null;

    /**
     * The configuration of this server
     */
    private Configuration _config;

    /**
     * The logger
     */
    private static final Log _log = LogFactory.getLog(JmsServer.class);

    /**
     * Construct a new <code>JmsServer</code>
     *
     * @param config the server configuration
     * @throws ServerException if the server cannot be created
     */
    public JmsServer(Configuration config) throws ServerException {
        version();
        ConfigurationManager.setConfig(config);
        _config = config;
    }


    /**
     * Construct a new <code>JmsServer</code>, configured from the specified
     * configuration file.
     *
     * @param file configuration file name
     * @throws ServerException if the server cannot be created
     */
    public JmsServer(String file) throws ServerException {
        version();

        try {
            // initialise the configuration manager
            ConfigurationManager.setConfig(file);
            _config = ConfigurationManager.getConfig();
        } catch (Exception exception) {
            throw new FailedToCreateServerException(
                "Failed to read configuration: " + file, exception);
        }
    }

    /**
     * Initialise the server
     *
     * @throws NamingException if administered objects cannot be bound in JNDI
     * @throws ServerException if the server cannot be initialised
     */
    public void init() throws NamingException, ServerException {
        // initialise the logger
        LoggerConfiguration log = _config.getLoggerConfiguration();

        // @todo - need to do this in main(), to allow pluggable log factories
        // when embedding OpenJMS
        DOMConfigurator.configure(log.getFile());

        // initialise the service manager
        _services = ServiceManager.instance();

        // initialise the embedded JNDI server if required
        if (_config.getServerConfiguration().getEmbeddedJNDI()) {
            EmbeddedNameService.getInstance();
        }

        // create the embedded RMI registry, if it is configured
        if (hasConnector(SchemeType.RMI) &&
            _config.getRmiConfiguration().getEmbeddedRegistry()) {
            createRegistry();
        }

        // initialise the services, and start them

        try {
            registerServices();
            _services.startAll();
        } catch (ServiceException exception) {
            throw new ServerException("Failed to start services", exception);
        }

        // create and bind administered destinations
        DestinationManager.instance().registerConfiguredAdministeredDestinations();

        Context context = NamingHelper.getInitialContext(_config);

        // create the server interfaces
        initConnectors(context);

        // create the JNDI provider interfaces if required
        if (_config.getServerConfiguration().getEmbeddedJNDI()) {
            initJNDIConnectors(context);
        }
    }

    /**
     * This is the main line for the JMS Server. It processes the command line
     * argument, instantiates an instance of the server class and calls the
     * init routine on it.
     */
    public static void main(String[] args) {
        try {
            CommandLine cmdline = new CommandLine(args);

            boolean helpSet = cmdline.exists("help");
            boolean versionSet = cmdline.exists("version");
            boolean configSet = cmdline.exists("config");

            if (helpSet) {
                usage();
            } else if (versionSet) {
                version();
            } else if (!configSet && args.length != 0) {
                // invalid argument specified
                usage();
            } else {
                String config = cmdline.value(
                    "config", getOpenJMSHome() + "/config/openjms.xml");
                JmsServer server = new JmsServer(config);
                server.init();
            }
        } catch (Exception exception) {
            exception.printStackTrace();
            // force termination of any threads
            System.exit(-1);
        }
    }

    public static void version() {
        System.err.println(Version.TITLE + " " + Version.VERSION);
        System.err.println(Version.COPYRIGHT);
        System.err.println(Version.VENDOR_URL);
    }