DaanHoogland commented on code in PR #7554:
URL: https://github.com/apache/cloudstack/pull/7554#discussion_r1210061088


##########
api/src/main/java/org/apache/cloudstack/api/command/admin/vm/MigrateVirtualMachineWithVolumeCmd.java:
##########
@@ -146,28 +152,31 @@ public ApiCommandResourceType getApiResourceType() {
 
     @Override
     public void execute() {
-        if (hostId == null && MapUtils.isEmpty(migrateVolumeTo)) {
-            throw new InvalidParameterValueException(String.format("Either %s 
or %s must be passed for migrating the VM.", ApiConstants.HOST_ID, 
ApiConstants.MIGRATE_TO));
+        if (hostId == null && MapUtils.isEmpty(migrateVolumeTo) && 
!Boolean.TRUE.equals(autoSelect)) {
+            throw new InvalidParameterValueException(String.format("Either %s 
or %s must be passed or %s must be true for migrating the VM.", 
ApiConstants.HOST_ID, ApiConstants.MIGRATE_TO, ApiConstants.AUTO_SELECT));
         }
 
         VirtualMachine virtualMachine = 
_userVmService.getVm(getVirtualMachineId());
-        if (!VirtualMachine.State.Running.equals(virtualMachine.getState()) && 
hostId != null) {
+        if (!VirtualMachine.State.Running.equals(virtualMachine.getState()) && 
(hostId != null || Boolean.TRUE.equals(autoSelect))) {
             throw new InvalidParameterValueException(String.format("%s is not 
in the Running state to migrate it to the new host.", virtualMachine));
         }
 
-        if (!VirtualMachine.State.Stopped.equals(virtualMachine.getState()) && 
hostId == null) {
-            throw new InvalidParameterValueException(String.format("%s is not 
in the Stopped state to migrate, use the %s parameter to migrate it to a new 
host.",
-                    virtualMachine, ApiConstants.HOST_ID));
+        if (!VirtualMachine.State.Stopped.equals(virtualMachine.getState()) && 
hostId == null && Boolean.FALSE.equals(autoSelect)) {
+            throw new InvalidParameterValueException(String.format("%s is not 
in the Stopped state to migrate, use the %s or %s parameter to migrate it to a 
new host.",
+                    virtualMachine, 
ApiConstants.HOST_ID,ApiConstants.AUTO_SELECT));
         }
 
         try {
             VirtualMachine migratedVm = null;
-            if (hostId != null) {
-                Host destinationHost = _resourceService.getHost(getHostId());
-                // OfflineVmwareMigration: destination host would have to not 
be a required parameter for stopped VMs
-                if (destinationHost == null) {
-                    s_logger.error(String.format("Unable to find the host with 
ID [%s].", getHostId()));
-                    throw new InvalidParameterValueException("Unable to find 
the specified host to migrate the VM.");
+            if (getHostId() != null || Boolean.TRUE.equals(autoSelect)) {
+                Host destinationHost = null;
+                if (getHostId() != null) {
+                    destinationHost = _resourceService.getHost(getHostId());
+                    // OfflineVmwareMigration: destination host would have to 
not be a required parameter for stopped VMs
+                    if (destinationHost == null) {
+                        s_logger.error(String.format("Unable to find the host 
with ID [%s].", getHostId()));
+                        throw new InvalidParameterValueException("Unable to 
find the specified host to migrate the VM.");
+                    }

Review Comment:
   @shwstppr , isn“t this equivilent?  This is a genuine question. I do not see 
how `autoSelect is used in this bit
   ```suggestion
               if (getHostId() != null) {
                   Host destinationHost = _resourceService.getHost(getHostId());
                   // OfflineVmwareMigration: destination host would have to 
not be a required parameter for stopped VMs
                   if (destinationHost == null && 
Boolean.FALSE.equals(autoSelect)) {
                       s_logger.error(String.format("Unable to find the host 
with ID [%s].", getHostId()));
                       throw new InvalidParameterValueException("Unable to find 
the specified host to migrate the VM.");
   ```
   



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