Script to reconfigure a vSphere vm first network adapter

VmReconfigNetwork.groovy

import java.net.URL
import com.vmware.vim25.*
import com.vmware.vim25.mo.*

/*

    Example invocation:
    groovy -cp lib/dom4j-1.6.1.jar:lib/vijava50120120518.jar  Sample.groovy 1 2 3 websphere "Network adapter 1" DMZ

*/

if(args.length != 6) {
    System.out.println("Usage: java <program> <url> <username> <password> <vmname> <name> <newname>");
    System.out.println("name - network name");
    System.out.println("name - new network name");
    System.exit(0);
}

String url = args[0];
String usr = args[1];
String pwd = args[2];
String vmname = args[3];
String name = args[4];
String newname = args[5];

def start = System.currentTimeMillis()
def si = new ServiceInstance(new URL(url), usr, pwd, true)
def end = System.currentTimeMillis()
println "["+url+"] time to login: " + (end-start)


def rootFolder = si.getRootFolder()
VirtualMachine vm = (VirtualMachine) new InventoryNavigator(rootFolder).searchManagedEntity("VirtualMachine", vmname);

if(vm==null) {
  System.out.println("No VM " + vmname + " found");
  si.getServerConnection().logout();
  return;
}

def networkReference = doesNetworkNameExist(vm, newname)
if(!doesNetworkNameExist(vm, newname)) {
  System.out.println("No network " + newname + "  found");
  si.getServerConnection().logout();
  return;
}

String result = null;
VirtualDeviceConfigSpec nicSpec = getNICDeviceConfigSpec(vm, name, newname, networkReference);

if(nicSpec!=null) {
    VirtualMachineConfigSpec vmConfigSpec = new VirtualMachineConfigSpec();
    VirtualDeviceConfigSpec[] changes=[nicSpec];
    vmConfigSpec.setDeviceChange(changes);
    Task task = vm.reconfigVM_Task(vmConfigSpec);
    result = task.waitForMe();

    if(result==Task.SUCCESS) {
      System.out.println("Done with NIC for VM:" + vmname);
    } else {
      System.out.println("Failed with NIC for VM:" + vmname);
    }
} else {
    println "Nic not found"
}

si.getServerConnection().logout()

def getNICDeviceConfigSpec(VirtualMachine vm, String name, String newname, ManagedObjectReference networkReference ) throws Exception {
    VirtualDeviceConfigSpec nicSpec = new VirtualDeviceConfigSpec();
    VirtualMachineConfigInfo vmConfigInfo = vm.getConfig();

    VirtualDevice [] vds = vmConfigInfo.getHardware().getDevice();
    nicSpec.setOperation(VirtualDeviceConfigSpecOperation.edit);
    for(int i=0;i<vds.length;i++) {
        if((vds[i] instanceof VirtualEthernetCard) && (vds[i].getDeviceInfo().getLabel().equalsIgnoreCase(name))) {
            VirtualEthernetCardNetworkBackingInfo nicBacking=vds[i].getBacking();
            println "Found device, requesting change, old network is: "+nicBacking.getDeviceName()
            nicBacking.setDeviceName(newname);
            nicBacking.network = networkReference;

            nicSpec.setDevice(vds[i]);
            return nicSpec;
        }
      }
    return null;
  }

def doesNetworkNameExist(VirtualMachine vm, String netName) throws Exception {
    VirtualMachineRuntimeInfo vmRuntimeInfo = vm.getRuntime();
    EnvironmentBrowser envBrowser = vm.getEnvironmentBrowser();
    ManagedObjectReference hmor = vmRuntimeInfo.getHost();

    HostSystem host = new HostSystem(vm.getServerConnection(), hmor);
    ConfigTarget cfg = envBrowser.queryConfigTarget();
    VirtualMachineNetworkInfo[] nets = cfg.getNetwork();
    for (int i = 0; nets!=null && i < nets.length; i++)  {
      NetworkSummary netSummary = nets[i].getNetwork();
      if (netSummary.isAccessible() &&
          netSummary.getName().equalsIgnoreCase(netName))  {
        return netSummary.getNetwork();
      }
    }
    return null;
}