q2.java

java pos,你可以直接编译运行,

/*
 * Copyright (c) 2005 jPOS.org.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
 * 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 end-user documentation included with the redistribution,
 *    if any, must include the following acknowledgment:
 *    "This product includes software developed by the jPOS project
 *    (http://www.jpos.org/)". Alternately, this acknowledgment may
 *    appear in the software itself, if and wherever such third-party
 *    acknowledgments normally appear.
 *
 * 4. The names "jPOS" and "jPOS.org" must not be used to endorse
 *    or promote products derived from this software without prior
 *    written permission. For written permission, please contact
 *    [e-mail].
 *
 * 5. Products derived from this software may not be called "jPOS",
 *    nor may "jPOS" appear in their name, without prior written
 *    permission of the jPOS project.
 *
 * THIS SOFTWARE IS PROVIDED ``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 THE JPOS PROJECT 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.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the jPOS Project.  For more
 * information please see <http://www.jpos.org/>.
 */

package org.jpos.q2;

import java.io.File;
import java.io.FileFilter;
import java.io.FileWriter;
import java.io.IOException;
import java.io.ByteArrayOutputStream;
import java.io.ByteArrayInputStream;
import java.io.OutputStreamWriter;
import java.util.List;
import java.util.ArrayList;
import java.util.Map;
import java.util.TreeMap;
import java.util.Iterator;
import javax.management.ObjectName;
import javax.management.ObjectInstance;
import javax.management.NotCompliantMBeanException;
import javax.management.MBeanRegistrationException;
import javax.management.MalformedObjectNameException;
import javax.management.InstanceAlreadyExistsException;
import javax.management.InstanceNotFoundException;
import javax.management.MBeanServer;
import javax.management.MBeanServerFactory;

import javax.crypto.Cipher;
import javax.crypto.spec.SecretKeySpec;
import java.security.GeneralSecurityException;

import org.jdom.Element;
import org.jdom.Document;
import org.jdom.JDOMException;
import org.jdom.input.SAXBuilder;
import org.jdom.output.Format;
import org.jdom.output.XMLOutputter;

import org.apache.commons.cli.Options;
import org.apache.commons.cli.CommandLine;
import org.apache.commons.cli.HelpFormatter;
import org.apache.commons.cli.CommandLineParser;
import org.apache.commons.cli.PosixParser;
import org.jpos.util.Log;
import org.jpos.util.Logger;
import org.jpos.util.SimpleLogListener;
import org.jpos.iso.ISOUtil;
import org.jpos.iso.ISOException;

/**
 * @author <a href="mailto:[e-mail]">Alireza Taherkordi</a>
 * @author <a href="mailto:[e-mail]">Alejandro P. Revilla</a>
 * @author <a href="mailto:[e-mail]">Alwyn Schoeman</a>
 * @version $Revision: 1.17 $ $Date: 2005/08/16 17:30:04 $
 */
public class Q2 implements FileFilter {
    public static final String Q2_VERSION          = "XX_Q2_VERSION_XX";
    public static final String DEFAULT_DEPLOY_DIR  = "deploy";
    public static final String JMX_NAME            = "Q2";
    public static final String LOGGER_NAME         = "Q2";
    public static final String REALM               = "Q2.system"; 
    public static final String LOGGER_CONFIG       = "00_logger.xml";
    public static final String QBEAN_NAME          = "Q2:type=qbean,service=";
    public static final String Q2_CLASS_LOADER     = "Q2:type=system,service=loader";
    public static final String DUPLICATE_EXTENSION = "DUP";
    public static final String ERROR_EXTENSION     = "BAD";

    public static final String PROTECTED_QBEAN        = "protected-qbean";
    public static final int SCAN_INTERVAL             = 2500;
    public static final long SHUTDOWN_TIMEOUT         = 60000;

    private MBeanServer server;
    private File deployDir, libDir;
    private Map dirMap;
    private QFactory factory;
    private QClassLoader loader;
    private Log log;
    private boolean shutdown;
    private boolean shuttingDown;
    private Thread q2Thread;
    private String[] args;
    private boolean hasSystemLogger;

    public Q2 (String[] args) {
        super();
        this.args = args;
        parseCmdLine (args);
        this.libDir     = new File (deployDir, "lib");
        this.dirMap     = new TreeMap ();
        deployDir.mkdirs ();
    }
    public void start () 
        throws MalformedObjectNameException,
               InstanceAlreadyExistsException,
               NotCompliantMBeanException,
               MBeanRegistrationException
    {
        /*
         * The following code determines whether a MBeanServer exists already.
         * If so then the first one in the list is used.  I have not yet find a way to
         * interrogate the server for information other than MBeans so to pick a
         * specific one would be difficult.
         */
        ArrayList mbeanServerList = MBeanServerFactory.findMBeanServer(null);
        if (mbeanServerList.size() == 0) {
            server  = MBeanServerFactory.createMBeanServer (JMX_NAME);
        } else {
            server = (MBeanServer) mbeanServerList.get(0);
        }
        ObjectName loaderName = new ObjectName (Q2_CLASS_LOADER);
        try {
            loader = new QClassLoader (server, libDir, loaderName);
            server.registerMBean (loader, loaderName);
            loader = loader.scan();
        } catch (Throwable t) {
            log.error ("initial-scan", t);
        }
        factory = new QFactory (loaderName, this);
        initSystemLogger ();
        addShutdownHook ();
        q2Thread = Thread.currentThread ();
        q2Thread.setContextClassLoader (loader);
        while (!shutdown) {
            try {
                loader = loader.scan ();
                scan ();
                deploy ();
                checkModified ();
                relax (SCAN_INTERVAL);
            } catch (Throwable t) {
                log.error ("start", t);
                relax ();
            }
        }
        q2Thread = null;
        undeploy ();
        try {
            server.unregisterMBean (loaderName);
        } catch (InstanceNotFoundException e) {
            log.error (e);
        }
        if (!shuttingDown)
            System.exit (0);
    }
    public void shutdown () {
        shutdown = true;
        q2Thread.interrupt ();
    }
    public QClassLoader getLoader () {
        return loader;
    }
    public QFactory getFactory () {
        return factory;
    }
    public String[] getCommandLineArgs() {
        return args;
    }
    public boolean accept (File f) {
        return f.getName().endsWith (".xml");
    }
    public File getDeployDir () {
        return deployDir;
    }
    private void scan () {
        File file[] = deployDir.listFiles (this);
        // Arrays.sort (file); --apr not required - we use TreeMap
        for (int i=0; i<file.length; i++) {
            register (file[i]);
        }
    }

    private void deploy () {
        List startList = new ArrayList ();
        Iterator iter = dirMap.entrySet().iterator();
        try {
            while (iter.hasNext()) {
                Map.Entry entry = (Map.Entry) iter.next();
                File   f        = (File)   entry.getKey ();
                QEntry qentry   = (QEntry) entry.getValue ();
                long deployed   = qentry.getDeployed ();
                if (deployed == 0) {
                    if (deploy (f)) {
                        if (qentry.isQBean ())
                            startList.add (qentry.getInstance());
                        qentry.setDeployed (f.lastModified ());
                    } else {
                        // deploy failed, clean up.
                        iter.remove();
                    }
                } else if (deployed != f.lastModified ()) {
                    undeploy (f);
                    iter.remove ();
                }
            }
            iter = startList.iterator();
            while (iter.hasNext ()) {
                start ((ObjectInstance) iter.next ());
            }
        }
        catch (Exception e){
            log.warn ("deploy", e);
        }
    }

    private void undeploy () {
        Object[] set = dirMap.entrySet().toArray ();
        int l = set.length;

        while (l-- > 0) {
            Map.Entry entry = (Map.Entry) set[l];
            File   f  = (File) entry.getKey ();
            undeploy (f);
        }
    }

    private void addShutdownHook () {
        Runtime.getRuntime().addShutdownHook (
            new Thread () {
                public void run () {
                    shuttingDown = true;
                    shutdown = true;
                    log.info ("shutting down");
                    if (q2Thread != null) {
                        try {
                            q2Thread.join (SHUTDOWN_TIMEOUT);
                        } catch (InterruptedException e) { }
                    }
                }
            }
        );
    }

    private void checkModified () {
        Iterator iter = dirMap.entrySet().iterator();
        while (iter.hasNext()) {
            Map.Entry entry = (Map.Entry) iter.next();
            File   f        = (File)   entry.getKey ();
            QEntry qentry   = (QEntry) entry.getValue ();
            if (qentry.isQBean() && qentry.isQPersist()) {
                ObjectName name = qentry.getObjectName ();
                if (getState (name) == QBean.STARTED && isModified (name)) {
                    qentry.setDeployed (persist (f, name));
                }
            }
        }
    }

    private int getState (ObjectName name) {
        int status = -1;
        if (name != null) {
            try {
                status = (
                    (Integer) server.getAttribute (name, "State")
                ).intValue();
            } catch (Exception e) {
                log.warn ("getState", e);
            }
        }
        return status;
    }
    private boolean isModified (ObjectName name) {
        boolean modified = false;