Xenserver 5.5 Api Cheat Sheet (Page 2 of 4) in pdf

Xenserver 5.5 Api Cheat Sheet Page 2

Replace the MAC address from a configurable list.

// Recycling MAC addresses solves the DHCP IP address pool problem

// macAddresses is a comma delimited configuration string of

// reusable MAC addresses.

// find first virtual network interface

VIF vif = vm.getVIFs(connection).iterator().next();

String macAddress = getVacantMacAddress(connection,macAddresses);

replaceMacAddress(vif,macAddress);

// returns the first configured MAC address that is not in use

private String getVacantMacAddress(Connection connection, String macAddresses) {

Set<String> usedMacAddresses =

new

HashSet<String>();

Map<VIF, Record> allVifs = VIF.getAllRecords(connection);

for

(VIF vif : allVifs.keySet()) {

VIF.Record vifrecord = allVifs.get(vif);

usedMacAddresses.add(vifrecord.MAC);

}

String vacantMacAddress = null;

for

(String macAddress : macAddresses.split(",")) {

(!usedMacAddresses.contains(macAddress)) {

vacantMacAddress = macAddress;

break;

}

return

vacantMacAddress;

}

// updates the specified vif with the new MAC address

private void replaceMacAddress(VIF vif, String newMac) {

// get virtual network interface details

VIF.Record vifrecord = vif.getRecord(connection);

// destroy old virtual network interface

vif.destroy(connection);

// create a new virtual network with the modified MAC address

vifrecord.MAC = newMac;

vifrecord.MACAutogenerated = false;

VIF.create(connection, vifrecord);

}

Xenserver 5.5 Api Cheat Sheet Page 2