remoteserveradapter.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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 *    permission of Exoffice Technologies.  For written permission,
 *    please contact [e-mail].
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 * 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
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 * 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,
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 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
 * OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * Copyright 2001,2003 (C) Exoffice Technologies Inc. All Rights Reserved.
 *
 * $Id: RemoteServerAdapter.java,v 1.11 2003/08/16 09:41:34 tanderson Exp $
 *
 * Date         Author  Changes
 * 09/06/2001   jima    Created from Tim Andersons work on Compliance
 *                      Test Suite.
 */
package org.exolab.testharness.jms.util;

import javax.jms.JMSException;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

import org.exolab.jms.administration.JmsAdminServerIfc;
import org.exolab.jms.config.AdminConfiguration;
import org.exolab.jms.config.Configuration;
import org.exolab.jms.config.ConfigurationManager;


/**
 * Adapter for an OpenJMS server, run in a separate JVM.
 *
 * @version     $Revision: 1.11 $ $Date: 2003/08/16 09:41:34 $
 * @author      <a href="mailto:[e-mail]">Tim Anderson</a>
 * @see         org.exolab.jms.server.JmsServer
 */
public class RemoteServerAdapter extends ServerAdapter {

    /**
     * The helper used to run the server
     */
    private ServerRunner _server = null;

    /**
     * Construct an instance of the adapter, with the configuration file path
     *
     * @param path the configuration file path
     */
    public RemoteServerAdapter(String path) {
        super(path);
    }

    /**
     * Start the server
     *
     * @throws JMSException if the server cannot be started
     */
    public void start() throws JMSException {
        final int retries = 12;
        final int sleep = 5000;

        Configuration config = ConfigurationManager.getConfig();
        AdminConfiguration adminConfig = config.getAdminConfiguration();
        
        String command = adminConfig.getScript();
        if (adminConfig.getConfig() != null) {
            command += " -config " + adminConfig.getConfig();
        }

        _server = new ServerRunner(command.toString());
        _server.start();

        try {
            connect(retries, sleep);
        } catch (JMSException exception) {
            if (_server.getException() != null) {
                // exception was intercepted during startup
                JMSException error = new JMSException(
                    _server.getException().getMessage());
                error.setLinkedException(_server.getException());
                throw error;
            } else {
                throw exception;
            }
        }
    }

    /**
     * Stop the server
     *
     * @throws JMSException if the server cannot be stopped
     */
    public void stop() throws JMSException {
        super.stop();
        if (_server != null) {
            while (true) {
                try {
                    _server.join();
                    break;
                } catch (InterruptedException ignore) {
                }
            } 
            _server = null;
        }
    }

    /**
     * Helper class to run an OpenJMS server
     */
    class ServerRunner extends Thread {
        private final String _command;
        private final Executor _executor;
        private Exception _exception = null;

        public ServerRunner(String command) {
            _command = command;
            _executor = new Executor(_command);
        }

        public void run() {
            Log log = LogFactory.getLog(RemoteServerAdapter.class);
            try {
                log.debug("Starting OpenJMS server with command=" +
                           _command);
                _executor.run();
                log.debug("OpenJMS server terminated");
            } catch (Exception exception) {
                log.debug("Failed to start OpenJMS server", exception);
                _exception = exception;
            } 
        }

        public Exception getException() {
            return _exception;
        }

    } //-- ServerRunner

} //-- RemoteServerAdapter