/*
* @(#)file      NmaMasterNametags.java
* @(#)author    Sun Microsystems, Inc.
* @(#)version   1.2
* @(#)date      02/06/06
*
* Copyright 2002 Sun Microsystems, Inc. All rights reserved.
* This software is the proprietary information of Sun Microsystems, Inc.
* Use is subject to license terms.
*
* Copyright 2002 Sun Microsystems, Inc. Tous droits rservs.
* Ce logiciel est propriet de Sun Microsystems, Inc.
* Distribu par des licences qui en restreignent l'utilisation.
*/
 
// java import
//
import java.net.InetAddress;
 
// jmx import
//
import javax.management.ObjectName;
import javax.management.MBeanException;
 
// jdmk import
//
import com.sun.jdmk.TraceManager;
import com.sun.jdmk.comm.HttpConnectorClient;
import com.sun.jdmk.comm.HttpConnectorAddress;
import com.sun.jdmk.comm.CommunicationException;
import com.sun.jdmk.comm.UnauthorizedSecurityException;
 
 
/**
 * This java client uses an HTTP connector client to establish a connection
 * to the Master NMA and retrieve all Nametags.
 *
 * To compile the client:
 *
 * javac NmaMasterNametags.java
 *
 * Note: First ensure that the jar files specified in the chapter
 * 'Configuration Files, Dependencies and Requirements' of the
 * "Netra High Availability Suite 3.0
 * NMA Programming Guide" are in your CLASSPATH.
 *
 * To run the client:
 *
 * java NmaMasterNametags domain_name> master_IP_address>
 *  HttpConnectorServer_port>
 *
 * For example:  java NmaMasterNametags cluster_8 10.8.1.18 8081
 *
 * Notes:
 * 1) This example must be run on a machine with access to the
 * cluster, for example, the cluster install server.
 * 2) The second parameter can also be the master floating address, for
 * example, 10.8.1.1
 *
 */
 
public class NmaMasterNametags {
    
    public static void main(String argv[]) {
        
        try {
            
            /**
             * Debug
             * To activate the debug or trace mechanism from the command
             * line, use the syntax:
             * java -DLEVEL_DEBUG NmaMasterNametags arguments> or
             * java -DLEVEL_TRACE NmaMasterNametags arguments>
             *
             * For example:
             * java -DLEVEL_DEBUG NmaMasterNametags cluster_6 10.6.1.1 8081
             *
             */
            
            TraceManager.parseTraceProperties();
            
            // Set the domain name of the cluster
            //
            String domain = "DefaultDomain";
            if (argv.length >=1) domain = argv[0];
            
            // Set the host name of the remote MBean server.
            //
            String agentHost = InetAddress.getLocalHost().getHostName();
            if (argv.length >= 2) agentHost = argv[1];
            
            // Set the port number of the remote connector server.
            //
            int agentPort = 8081;
            if (argv.length >= 3)
                agentPort = Integer.decode(argv[2]).intValue();
            
            System.out.println(">>> Connecting to " + agentHost +
            " using port number " + agentPort);
            
            // Set up the HTTP Connector Client.
            //
            HttpConnectorClient connector = new HttpConnectorClient();
            
            try {
                // Initialize communication with the remote MBean server.
                //
                HttpConnectorAddress hca =
                new HttpConnectorAddress(agentHost,agentPort);
                connector.connect(hca);
            } catch (IllegalArgumentException e) {
                System.out.println("Connection exception! " +
                e.getMessage());
            } catch (CommunicationException e) {
                System.out.println("Connection exception! " +
                e.getMessage());
            } catch (UnauthorizedSecurityException e) {
                System.out.println("Connection exception! " +
                e.getMessage());
            }
            
            // Get Nametags
            //
            
            String[] iargs = {};
            String[] isig = {};
            
            String instanceName = domain + ".master:nhas-object=pmd_stats";
            ObjectName node =
            new ObjectName(instanceName);
            try {
                // Attempt to invoke getNameTags()
                //
                String[] nt = (String[])
                connector.invoke(node, "getNameTags", iargs, isig);
                
                System.out.println("Node " + argv[0] +
                " is running process groups:");
                // Print each element of the array returned by getNameTags()
                // to the standard output.  Each element is a nametag 
                // managed by the daemon monitor
                //
                for (int i = 0; i  nt.length; i++) {
                    System.out.println(nt[i]);
                }
            } catch (MBeanException e) {
                System.out.println("Got an exception invoking " +
                "getNameTags()! " + e.getTargetException().getMessage());
            }
            
            // Terminate communication with the remote MBean server.
            //
            connector.disconnect();
            
            // Exit program
            //
            System.exit(0);
            
        } catch (Exception e) {
            System.out.println("Got an exception !" + e.getMessage());
            e.printStackTrace();
            System.exit(1);
        }
    }
}