org.objectweb.fractal.bf.hdl.reader.NetMLUtils Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of fractal-bf-hdl-reader Show documentation
Support input/output operations on HDL entities
The newest version!
/**
 * Author: Valerio Schiavoni 
 */
package org.objectweb.fractal.bf.hdl.reader;

import java.util.List;

import org.xmlnetwork.Interface;
import org.xmlnetwork.NetML;
import org.xmlnetwork.RouterConf;

/**
 * @author Valerio Schiavoni 
 *
 */
public class NetMLUtils
{

  /**
   * Return the name of the host that has one of its interfaces configured with the specified IP address.
   * @param input the {@link NetML} object
   * @param ip the string representation of the IP
   * @return the name of the host, null if not found
   */
  public static String findHostByIpAddress(NetML input, String ip) {
    
    List routerConf = input.getRouters().getRouterConf();
    
    for (RouterConf rc : routerConf)
    {
      List interfaces = rc.getInterface();
      for (Interface i : interfaces)
      {
        List ipAddresses = i.getIpAddress();
        for (String ipaddr : ipAddresses)
        {
          if (ipaddr.equalsIgnoreCase(ip))
          {

            return rc.getHostname();
          }
        }
      }
    }
    
    return null;
  }
  
  /**
   * Assume 'eth0' as the only available ethernet interface
   * 
   * @param input
   * @param hostName
   * @return
   */
  public static String findIpAddressByHostName(NetML input, String hostName)
  {

    return findIpAddressByHostName(input, hostName, "eth0");
  }

  /**
   * Assume 'eth0' as the only available ethernet interface
   * 
   * @param input
   * @param hostNameAndIp
   * @param itfName interface name, as specified in the NetML file
   * @return
   */
  public static String findIpAddressByHostName(NetML input, String hostNameAndIp,
      String itfName)
  {

    String ip = null;
    
    /**
     * The weights attribute from_host and to_host are expected in the following form:
     * {hostname}-{ip_address}:{port}
     * 
     */
    String hostName = hostNameAndIp.split("-")[0];
    
    RouterConf rc = findRouterConfByHostName(
        input.getRouters().getRouterConf(), hostName);

    if (rc == null) {
      throw new RuntimeException("Cannot find a router configuration for host: "+hostName);
    }
    for (Interface routerItf : rc.getInterface())
    {
      if (routerItf.getName().equalsIgnoreCase(itfName))
      {
        ip = routerItf.getIpAddress().get(0);
        break;
      }
    }

    return ip;
  }
  
  public static RouterConf findRouterConfByHostName(List confs,
      String hostName)
  {

    RouterConf res = null;
    for (RouterConf rc : confs)
    {
      if (rc.getHostname().equals(hostName))
      {
        res = rc;
        break;
      }
    }
    return res;

  }
}