improve datacenter name handling

internal/vcenter/vcenter.go

@@ -175,7 +175,8 @@ func (v *Vcenter) FindVMByID(vmID string) (*VmProperties, error) {
 }
 
 func (v *Vcenter) FindVMByIDWithDatacenter(vmID string, dcID string) (*VmProperties, error) {
-
+	var dcName string
+	var err error
 	v.Logger.Debug("searching for vm id", "vm_id", vmID, "datacenter_id", dcID)
 
 	finder := find.NewFinder(v.client.Client, true)
@@ -195,6 +196,12 @@ func (v *Vcenter) FindVMByIDWithDatacenter(vmID string, dcID string) (*VmPropert
 	// Use finder.SetDatacenter to set the datacenter
 	finder.SetDatacenter(datacenter)
 
+	dcName, err = datacenter.ObjectName(v.ctx)
+	if err != nil {
+		v.Logger.Error("Couldn't find the name of the datacenter", "error", err)
+		dcName = ""
+	}
+
 	// Create a ManagedObjectReference for the VM
 	vmRef := types.ManagedObjectReference{
 		Type:  "VirtualMachine",
@@ -203,12 +210,11 @@ func (v *Vcenter) FindVMByIDWithDatacenter(vmID string, dcID string) (*VmPropert
 
 	var vm mo.VirtualMachine
 	//err := v.client.RetrieveOne(v.ctx, vmRef, []string{"config", "name"}, &vm)
-	err := v.client.RetrieveOne(v.ctx, vmRef, nil, &vm)
-
+	err = v.client.RetrieveOne(v.ctx, vmRef, nil, &vm)
 	if err == nil {
 		v.Logger.Debug("Found VM", "vm", vm)
 		return &VmProperties{
-			Datacenter: datacenter.Name(),
+			Datacenter: dcName,
 			Vm:         vm,
 		}, nil
 	} else if _, ok := err.(*find.NotFoundError); !ok {

server/handler/vmCreate.go

@@ -79,8 +79,13 @@ func (h *Handler) VmCreate(w http.ResponseWriter, r *http.Request) {
 		//prettyPrint(vmObject)
 
 		// calculate VM properties we want to store
-		numRam = vmObject.Vm.Config.Hardware.MemoryMB
-		numVcpus = vmObject.Vm.Config.Hardware.NumCPU * vmObject.Vm.Config.Hardware.NumCoresPerSocket
+		if vmObject.Vm.Config != nil {
+			numRam = vmObject.Vm.Config.Hardware.MemoryMB
+			numVcpus = vmObject.Vm.Config.Hardware.NumCPU * vmObject.Vm.Config.Hardware.NumCoresPerSocket
+		} else {
+			h.Logger.Error("Empty VM config")
+		}
+
 	}
 	err = vc.Logout()
 	if err != nil {