server.java

jdk-6u10-docs java开发宝典

		"contain the jmxConnector objectclass";
	    throw new NamingException(msg);
	}

        // Now need to replace jmxConnector attributes.
        //
        final Attributes newattrs = new BasicAttributes();
        newattrs.put("jmxAgentName",name);
        newattrs.put("jmxServiceURL",jmxUrl.toString());
        newattrs.put("jmxAgentHost",InetAddress.getLocalHost().getHostName());
        newattrs.put("jmxProtocolType",jmxUrl.getProtocol());
        newattrs.put("jmxExpirationDate", 
                     getExpirationDate(JMX_DEFAULT_LEASE));
        root.modifyAttributes(mydn,DirContext.REPLACE_ATTRIBUTE,newattrs);
    }

    /**
     * Creates an RMI Connector Server, starts it, and registers it
     * with the LDAP directory.
     * <p>
     * This method will transfer a fixed set of System Properties to 
     * the Map given to the RMIConnectorServer constructor. Some
     * JNDI properties, if defined, are transfered to the Map so
     * that they may be used when LDAP is used as external directory 
     * to register the RMI Stub (see {@link javax.management.remote.rmi} 
     * Javadoc). Note that even if LDAP is used as external directory
     * the {@link Context#INITIAL_CONTEXT_FACTORY 
     *            Context.INITIAL_CONTEXT_FACTORY} and 
     * {@link Context#PROVIDER_URL Context.PROVIDER_URL} properties
     * usually don't need to be passed.
     * <p>
     * The following System properties, if defined, are transfered to
     * the Map given to the RMIConnectorServer constructor.
     * <ul><li>{@link Context#INITIAL_CONTEXT_FACTORY 
     *           Context.INITIAL_CONTEXT_FACTORY}</li>
     *     <li>{@link Context#PROVIDER_URL 
     *           Context.PROVIDER_URL}</li>
     *     <li>{@link Context#SECURITY_PRINCIPAL 
     *           Context.SECURITY_PRINCIPAL}</li>
     *     <li>{@link Context#SECURITY_CREDENTIALS
     *           Context.SECURITY_CREDENTIALS}</li>
     *     <li>{@link RMIConnectorServer#JNDI_REBIND_ATTRIBUTE
     *           RMIConnectorServer.JNDI_REBIND_ATTRIBUTE} - default
     *           is <code>true</code>.</li>
     * </ul>
     *
     * @param url A string representation of the JMXServiceURL.
     * @return the created RMIConnectorServer.
     */
    public JMXConnectorServer rmi(String url) 
        throws IOException, JMException,
               NamingException, ClassNotFoundException {

        // Make a JMXServiceURL from the url string.
        //
        JMXServiceURL jurl = new JMXServiceURL(url);

        // Prepare the environment Map
        //
        final HashMap env = new HashMap();
        final String rprop = RMIConnectorServer.JNDI_REBIND_ATTRIBUTE;
        final String rebind=System.getProperty(rprop,"true");
        final String factory = 
            System.getProperty(Context.INITIAL_CONTEXT_FACTORY);
        final String ldapServerUrl = 
            System.getProperty(Context.PROVIDER_URL);
        final String ldapUser = 
            System.getProperty(Context.SECURITY_PRINCIPAL);
        final String ldapPasswd = 
            System.getProperty(Context.SECURITY_CREDENTIALS);

        // Transfer some system properties to the Map
        //
        if (factory!= null) // this should not be needed
            env.put(Context.INITIAL_CONTEXT_FACTORY,factory);
        if (ldapServerUrl!=null) // this should not be needed
            env.put(Context.PROVIDER_URL, ldapServerUrl);
        if (ldapUser!=null) // this is needed when LDAP is used
            env.put(Context.SECURITY_PRINCIPAL, ldapUser);
        if (ldapPasswd != null) // this is needed when LDAP is used
            env.put(Context.SECURITY_CREDENTIALS, ldapPasswd);
        env.put(rprop,rebind); // default is true.

        // Create an RMIConnectorServer
        //
        System.out.println("Creating RMI Connector: " + jurl);
        JMXConnectorServer rmis =
            JMXConnectorServerFactory.newJMXConnectorServer(jurl, env, mbs);

        // Get the AgentName for registering the Connector in the Lookup Service
        //
        final String agentName = System.getProperty("agent.name",
                                                    "DefaultAgent");

        // Start the connector and register it in the LDAP directory.
        //
        start(rmis,env,agentName);

        return rmis;
    }

    /**
     * Start a JMXConnectorServer and register it with the LDAP directory.
     *
     * @param server the JMXConnectorServer to start and register.
     * @param env   the environment Map.
     * @param agentName the AgentName with which the URL must be registered
     *                  in the LDAP Directory. This is not a LDAP DN, but
     *                  the value of the jmxAgentName attribute.
     */
    public void start(JMXConnectorServer server, Map env, String agentName) 
        throws IOException, NamingException {

        // Start the JMXConnectorServer
        //
        server.start();

        // Get a pointer to the LDAP directory.
        //
        final DirContext root = getRootContext();

        // Create a JMX Service URL to register in the LDAP directory
        //
        final JMXServiceURL address = server.getAddress();

        // Register the URL in the LDAP directory
        //
        register(root,address,agentName);
    }

    /**
     * Returns a X.208 string representing the GMT date at now + sec.
     *
     * @param sec Number of seconds from now.
     * @return an X.208 GMT GeneralizedTime (ending with Z).
     */
    public static String getExpirationDate(long sec) {
        final SimpleDateFormat fmt =  new SimpleDateFormat("yyyyMMddHHmmss.S");
        final Date date = new Date();
        final Date gmtDate;
        if (fmt.getCalendar().getTimeZone().inDaylightTime(date))
            gmtDate = new Date(System.currentTimeMillis() -
                               fmt.getCalendar().getTimeZone().getRawOffset() -
                               fmt.getCalendar().getTimeZone().getDSTSavings() +
                               1000*sec);
        else
            gmtDate =
                new Date(System.currentTimeMillis() -
                         fmt.getCalendar().getTimeZone().getRawOffset() +
                         1000*sec);
        return ((fmt.format(gmtDate))+"Z");
    }

    /**
     * Trace a debug message.
     */
    private static void debug(String msg) {
        if (debug) System.out.println(msg);
    }

    /**
     * Program Main
     * <p>
     * Creates a server object, gets the JMX Service URL, and calls
     * the method that will create and register the appropriate 
     * JMX Connector Server for that URL.
     * <p>
     * You may wish to use the following properties on the Java command line:
     * <ul>
     * <li><code>-Durl=&lt;jmxServiceURL&gt;</code>: specifies the URL of
     *     the JMX Connector Server you wish to use. See README file for more
     *     details.</li>
     * <li><code>-Dagent.name=&lt;AgentName&gt;</code>: specifies an 
     *     AgentName to register with.</li>
     * <li><code>-Djava.naming.factory.initial=&lt;initial-context-factory&gt;
     *     </code>: The initial context factory to use for accessing the 
     *     LDAP directory (see {@link Context#INITIAL_CONTEXT_FACTORY
     *     Context.INITIAL_CONTEXT_FACTORY}) - default is 
     *     <code>"com.sun.jndi.ldap.LdapCtxFactory"</code>.</li>
     * <li><code>-Djava.naming.provider.url=&lt;provider-url&gt;</code>:
     *     The LDAP Provider URL (see {@link Context#PROVIDER_URL 
     *     Context.PROVIDER_URL}).</li>
     * <li><code>-Djava.naming.security.principal=&lt;ldap-principal&gt;
     *     </code>: The security principal (login) to use to connect with
     *     the LDAP directory (see {@link Context#SECURITY_PRINCIPAL 
     *     Context.SECURITY_PRINCIPAL} - default is 
     *     <code>"cn=Directory Manager"</code>.</li>
     * <li><code>-Djava.naming.security.credentials=&lt;ldap-credentials&gt;
     *     </code>: The security credentials (password) to use to 
     *     connect with the LDAP directory (see 
     *     {@link Context#SECURITY_CREDENTIALS
     *     Context.SECURITY_CREDENTIALS}).</li>
     * <li><code>-Ddebug="true|false"</code>: switch the Server debug flag
     *     on/off (default is "false")</li>
     * </ul>
     */
    public static void main(String[] args) {
        try {
            // Get the value of the debug flag.
            //
            debug = (Boolean.valueOf(System.getProperty("debug","false"))).
                booleanValue();

            // Create a new Server object.
            //
            final Server s = new Server();

            // Get the JMXConnector URL
            //
            final String url =
                System.getProperty("url", "service:jmx:rmi://");

            // Build a JMXServiceURL
            //
            final JMXServiceURL jurl = new JMXServiceURL(url);

            // Creates a JMX Connector Server
            //
            final JMXConnectorServer server;
            debug("Creating Connector: " + jurl);

            final String p = jurl.getProtocol();
            if (p.equals("rmi"))        // Create an RMI Connector
                s.rmi(url);
            else if (p.equals("iiop"))  // Create an RMI/IIOP Connector
                s.rmi(url);
            else                        // Unsupported protocol
                throw new MalformedURLException("Unsupported protocol: " + p);

            System.out.println("\nService URL successfully registered " +
                               "in the LDAP Lookup Service");

        } catch (Exception x) {
            System.err.println("Unexpected exception caught in main: " + x);
            x.printStackTrace(System.err);
        }
    }
}