try {
int maxVncPorts = 64;
int vncPort = 0;
Random random = new Random();
HostMO vmOwnerHost = vmMo.getRunningHost();
ManagedObjectReference morParent = vmOwnerHost.getParentMor();
HashMap<String, Integer> portInfo;
if(morParent.getType().equalsIgnoreCase("ClusterComputeResource")) {
ClusterMO clusterMo = new ClusterMO(vmOwnerHost.getContext(), morParent);
portInfo = clusterMo.getVmVncPortsOnCluster();
} else {
portInfo = vmOwnerHost.getVmVncPortsOnHost();
}
// allocate first at 5900 - 5964 range
Collection<Integer> existingPorts = portInfo.values();
int val = random.nextInt(maxVncPorts);
int startVal = val;
do {
if (!existingPorts.contains(5900 + val)) {
vncPort = 5900 + val;
break;
}
val = (++val) % maxVncPorts;
} while (val != startVal);
if(vncPort == 0) {
s_logger.info("we've run out of range for ports between 5900-5964 for the cluster, we will try port range at 59000-60000");
Pair<Integer, Integer> additionalRange = mgr.getAddiionalVncPortRange();
maxVncPorts = additionalRange.second();
val = random.nextInt(maxVncPorts);
startVal = val;
do {
if (!existingPorts.contains(additionalRange.first() + val)) {
vncPort = additionalRange.first() + val;
break;
}
val = (++val) % maxVncPorts;
} while (val != startVal);
}
if (vncPort == 0) {
throw new Exception("Unable to find an available VNC port on host");
}
if (s_logger.isInfoEnabled()) {
s_logger.info("Configure VNC port for VM " + vmName + ", port: " + vncPort + ", host: " + vmOwnerHost.getHyperHostName());
}
return VmwareHelper.composeVncOptions(optionsToMerge, true, vncPassword, vncPort, keyboardLayout);
} finally {
try {