httpjmsserver.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

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 *    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 2000-2003 (C) Exoffice Technologies Inc. All Rights Reserved.
 *
 * $Id: HttpJmsServer.java,v 1.7 2003/09/25 12:37:56 tanderson Exp $
 */

package org.exolab.jms.server.http;

import java.net.InetAddress;
import java.net.UnknownHostException;
import java.util.Hashtable;

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

import org.exolab.jms.client.http.HttpJmsConstants;
import org.exolab.jms.client.mipc.IpcJmsConstants;
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.HttpConfigurationType;
import org.exolab.jms.config.ServerConfiguration;
import org.exolab.jms.config.TcpConfigurationType;
import org.exolab.jms.config.types.SchemeType;
import org.exolab.jms.server.ConnectionFactoryHelper;
import org.exolab.jms.server.JmsServerIfc;
import org.exolab.jms.server.ServerException;


/**
 * This class enables clients to connect to the JMS server via
 * a HTTP server.
 * It must be used in conjunction with the TCP connector.
 *
 * @version     $Revision: 1.7 $ $Date: 2003/09/25 12:37:56 $
 * @author      <a href="mailto:[e-mail]">Jim Mourikis</a>
 */
public class HttpJmsServer implements JmsServerIfc {

    /**
     * Construct a new <code>HttpJmsServer</code>
     */
    public HttpJmsServer() {
    }

    /**
     * Initialise the server
     */
    public void init() throws ServerException {
        HttpConfigurationType config =
            ConfigurationManager.getConfig().getHttpConfiguration();

        if (config.getProxyHost() != null) {
            System.setProperty("http.proxyHost", config.getProxyHost());
        }
        if (config.hasProxyPort()) {
            System.setProperty("http.proxyPort",
                Integer.toString(config.getProxyPort()));
        }
    }

    // implementation of JmsServerIfc.bindConnectionFactories
    public void bindConnectionFactories(Context context)
        throws NamingException, ServerException {

        Configuration config = ConfigurationManager.getConfig();

        // retrieve the configuration information from the configuration
        // manager
        ServerConfiguration server = config.getServerConfiguration();
        TcpConfigurationType tcp = config.getTcpConfiguration();
        String host = normalizeHost(server.getHost());
        String internalHost = normalizeHost(tcp.getInternalHost());

        // we need to put together a list of parameters that the
        // connection factories will need to use to connect
        // to this server
        Hashtable env = new Hashtable();
        env.put(getHttpServerProperty(), getHttpServerURL());
        env.put(IpcJmsConstants.IPC_SERVER_HOST, host);
        env.put(IpcJmsConstants.IPC_SERVER_PORT,
            Integer.toString(tcp.getPort()));
        if (internalHost != null) {
            env.put(IpcJmsConstants.IPC_INTERNAL_SERVER_HOST, internalHost);
        }
        Connector connector = ConfigurationManager.getConnector(getScheme());
        ConnectorResource resource =
            ConnectorHelper.getConnectorResource(getScheme());

        Class proxy;
        String className = resource.getServer().getProxyClass();
        try {
            proxy = Class.forName(className);
        } catch (ClassNotFoundException exception) {
            throw new ServerException(
                "Failed to locate the server proxy class: " + className);
        }

        ConnectionFactoryHelper.bind(
            context, connector.getConnectionFactories(), proxy, env);
    }

    /**
     * Returns the connector scheme for this server.
     */
    protected SchemeType getScheme() {
        return SchemeType.HTTP;
    }

    /**
     * Returns the HTTP configuration
     */
    protected HttpConfigurationType getHttpConfiguration() {
        return ConfigurationManager.getConfig().getHttpConfiguration();
    }

    /**
     * Returns the HTTP server URL property name, used in the construction
     * of connection factories
     */
    protected String getHttpServerProperty() {
        return HttpJmsConstants.HTTP_SERVER_URL;
    }

    /**
     * Returns the HTTP server URL, used in the construction of connection
     * factories
     */
    protected String getHttpServerURL() {
        HttpConfigurationType config = getHttpConfiguration();
        String host = config.getHost(); 
        // NOTE: host should not be converted to an IP address
        // refer to bug 806377 - HTTPS connector shouldn't convert host
        // names
        int port = config.getPort();
        String url = getScheme() + "://" + host + ":" + port;
        String path = config.getServerServlet();
        if (!path.startsWith("/")) {
            url += "/" + path;
        } else {
            url += path;
        }
        return url;
    }

    /**
     * This method will normalize the host name. If the host is localhost then
     * it will be converted to the corresponding IP address
     *
     * @param host - the raw host name
     * @return the normalized IP address
     */
    protected String normalizeHost(String host) {
        String server = host;

        // ensure that the host is not null
        if (host == null) {
            return host;
        }

        if (host.equals("localhost")) {
            try {
                server = InetAddress.getLocalHost().getHostAddress();
            } catch (UnknownHostException ignore) {
                // ignore
            }
        }

        return server;
    }

} //-- HttpJmsServer