/*
 * Copyright (c) 2002-2003 iReasoning Inc. All Rights Reserved.
 * 
 * This SOURCE CODE FILE, which has been provided by iReasoning Inc. as part
 * of an iReasoning Software product for use ONLY by licensed users of the product,
 * includes CONFIDENTIAL and PROPRIETARY information of iReasoning Inc.  
 *
 * USE OF THIS SOFTWARE IS GOVERNED BY THE TERMS AND CONDITIONS 
 * OF THE LICENSE STATEMENT AND LIMITED WARRANTY FURNISHED WITH
 * THE PRODUCT.
 *
 * IN PARTICULAR, YOU WILL INDEMNIFY AND HOLD IREASONING SOFTWARE, ITS
 * RELATED COMPANIES AND ITS SUPPLIERS, HARMLESS FROM AND AGAINST ANY
 * CLAIMS OR LIABILITIES ARISING OUT OF THE USE, REPRODUCTION, OR
 * DISTRIBUTION OF YOUR PROGRAMS, INCLUDING ANY CLAIMS OR LIABILITIES
 * ARISING OUT OF OR RESULTING FROM THE USE, MODIFICATION, OR
 * DISTRIBUTION OF PROGRAMS OR FILES CREATED FROM, BASED ON, AND/OR
 * DERIVED FROM THIS SOURCE CODE FILE.
 */

package agent.mib2jni;
import java.io.*;
import java.util.*;
import com.ireasoning.util.*;
import com.ireasoning.protocol.snmp.*;
import javax.management.*;


/**
 * Agent main class
 */
public class Agent extends SnmpBaseAgent
{
    static Agent _agent;
    
    //Check if the JVM is GNU GCJ
    static
    {//java.vendor.url=http://gcc.gnu.org/java/
        String vendor = System.getProperty("java.vendor.url");
        if(vendor != null && vendor.toLowerCase().indexOf("gnu.org") >= 0)
        {//GNU GCJ is not supported
            System.out.println( "GNU GCJ Java is not supported. Only Java from Sun Microsystems is supported.\nPlease download and install Java from http://java.sun.com");
            System.exit(1);
        }
    }

    /**
     * Constructor. Create MBeanServer instance internally. Agent will be listening on port specified in config file, which can be retrieved by using SnmpAgentConfig.getPort().
     * @param configFileName Agent's config file name. If absolute path is not specified, the file will be assumed located under ./config directory or current directory
     */
    public Agent(String configFileName) throws Exception
    {
        super(configFileName);
        _agent = this;
    }
    
    /**
     * Constructor. Use MBeanServer object passed from caller
     * @param server MBeanServer object
     * @param configFileName Agent's config file name. If absolute path is not specified, the file will be assumed located under ./config directory or current directory
     */
    public Agent(MBeanServer server, String configFileName) throws Exception
    {
        super(server, configFileName);
        _agent = this;
    }
    
    public static Agent getAgent()
    {
        return _agent;
    }

    public static void main(String[] args)
    {
        try
        {
            String configFile = "config/SnmpAgent.xml";
            Agent agent = new Agent(configFile);
        }
        catch(Exception e)
        {
            Logger.error(e);
        }
    }
    
    /**
     * Sets the MIB tree data structure. This method gets called by base class
     */
    protected void setOIDTree()
    {
        _root = OIDTree.getTree();
    }
    
    /**
     * Registers necessary MBeans
     */
    protected void registerMBeans() throws SnmpException
    {
        if(_root == null) setOIDTree();
        AgentMib.registerMBeans(_mbeanServer, _root);
    }
    
    /**
     * Unregisters necessary MBeans
     */
    protected void unregisterMBeans()
    {
        AgentMib.unregisterMBeans();
        OIDTree.resetTree();
    }
}