@Override
public Answer execute(final ScaleVmCommand command, final CitrixResourceBase citrixResourceBase) {
final VirtualMachineTO vmSpec = command.getVirtualMachine();
final String vmName = vmSpec.getName();
try {
final Connection conn = citrixResourceBase.getConnection();
final Set<VM> vms = VM.getByNameLabel(conn, vmName);
final Host host = Host.getByUuid(conn, citrixResourceBase.getHost().getUuid());
// If DMC is not enable then don't execute this command.
if (!citrixResourceBase.isDmcEnabled(conn, host)) {
throw new CloudRuntimeException(
"Unable to scale the vm: "
+ vmName
+ " as DMC - Dynamic memory control is not enabled for the XenServer:"
+ citrixResourceBase.getHost().getUuid()
+ " ,check your license and hypervisor version.");
}
if (vms == null || vms.size() == 0) {
s_logger.info(
"No running VM "
+ vmName
+ " exists on XenServer"
+ citrixResourceBase.getHost().getUuid());
return new ScaleVmAnswer(command, false, "VM does not exist");
}
// stop vm which is running on this host or is in halted state
final Iterator<VM> iter = vms.iterator();
while (iter.hasNext()) {
final VM vm = iter.next();
final VM.Record vmr = vm.getRecord(conn);
if (vmr.powerState == VmPowerState.HALTED
|| vmr.powerState == VmPowerState.RUNNING
&& !citrixResourceBase.isRefNull(vmr.residentOn)
&& !vmr.residentOn.getUuid(conn).equals(citrixResourceBase.getHost().getUuid())) {
iter.remove();
}
}
for (final VM vm : vms) {
vm.getRecord(conn);
try {
citrixResourceBase.scaleVM(conn, vm, vmSpec, host);
} catch (final Exception e) {
final String msg =
"Catch exception "
+ e.getClass().getName()
+ " when scaling VM:"
+ vmName
+ " due to "
+ e.toString();
s_logger.debug(msg);
return new ScaleVmAnswer(command, false, msg);
}
}
final String msg = "scaling VM " + vmName + " is successful on host " + host;
s_logger.debug(msg);
return new ScaleVmAnswer(command, true, msg);
} catch (final XenAPIException e) {
final String msg = "Upgrade Vm " + vmName + " fail due to " + e.toString();
s_logger.warn(msg, e);
return new ScaleVmAnswer(command, false, msg);
} catch (final XmlRpcException e) {
final String msg = "Upgrade Vm " + vmName + " fail due to " + e.getMessage();
s_logger.warn(msg, e);
return new ScaleVmAnswer(command, false, msg);
} catch (final Exception e) {
final String msg = "Unable to upgrade " + vmName + " due to " + e.getMessage();
s_logger.warn(msg, e);
return new ScaleVmAnswer(command, false, msg);
}
}
