* @(#)FetchTable.java
 * Copyright (c) 2012 ZOHO Corp. All Rights Reserved.
 * Please read the associated COPYRIGHTS file for more details.
 */

/**
 * This is an example program to explain how to write an application to 
 * retrieve the sample table with column ids .1.3.6.1.4.1.2.2.1.1, 
 * .1.3.6.1.4.1.2.2.1.2, .1.3.6.1.4.1.2.2.1.3, by using 
 * com.adventnet.snmp.snmp2 package of WebNMS SNMP API.
 *
 * The user could run this application by giving the following usage.
 *  
 * java FetchTable
 *
 *

import java.lang.*;
import java.util.*;
import java.net.*;
import com.adventnet.snmp.snmp2.*;

public class FetchTable {

public static void main(String args[]) {

	 // Start SNMP API
        SnmpAPI api = new SnmpAPI();
	
	// Open session
	SnmpSession session = new SnmpSession(api); 
	try 
	{
		session.open();
	}
	catch (SnmpException e )
	{
		System.err.println("Error opening socket: "+e);
	}

	// Build Get request PDU
	SnmpPDU pdu = new SnmpPDU();
	UDPProtocolOptions option = new UDPProtocolOptions("localhost");
	pdu.setProtocolOptions(option); 


	// get the OIDs
	SnmpOID[] oids = new SnmpOID[3];
	oids[0]=new SnmpOID(".1.3.6.1.4.1.2.2.1.1");
	oids[1]=new SnmpOID(".1.3.6.1.4.1.2.2.1.2");
	oids[2]=new SnmpOID(".1.3.6.1.4.1.2.2.1.3");

	// Send PDU and receive response PDU
	for(int i=0;i<3;i++)
	{
		pdu.addnull(oids[i]);
	}
	SnmpOID rootoid = new SnmpOID(".1.3.6.1.4.1.2.2.1.");
	String root = rootoid.toString();
	boolean comeOut = false;
	int rowCount = 1;
	while(!comeOut)
	{
		SnmpPDU result = session.syncSend(pdu);
		if(result == null)
		{
			System.out.println("Request timed out!");
			comeOut = true;
			break;
		}
		int size = pdu.getVariableBindings().size();
		for(int i=0;i<size;i++)
		{
			if(pdu.getObjectID(i).toString().startsWith(root))
			{
				comeOut = true;
				break;
			}
		}
		if(i == size)
		{
			System.out.println("ROW " + (rowCount++));
			System.out.println(result.printVarBinds() + "\n" );
		}
		pdu.setCommand(SnmpAPI.GETNEXT_REQ_MSG);
	}
	
	// close session
	session.close();
	
	// close api thread
	api.close();
	
 }

}