Fix NPE on updating security groups for an instance

server/src/main/java/com/cloud/vm/UserVmManagerImpl.java

@@ -28,7 +28,6 @@
 import java.net.URLDecoder;
 import java.util.ArrayList;
 import java.util.Arrays;
-import java.util.Collections;
 import java.util.Date;
 import java.util.HashMap;
 import java.util.HashSet;
@@ -3105,42 +3104,6 @@
             }
         }
 
-        boolean isVMware = (vm.getHypervisorType() == HypervisorType.VMware);
-
-        if (securityGroupIdList != null && isVMware) {
-            throw new InvalidParameterValueException("Security group feature is not supported for vmWare hypervisor");
-        } else {
-            // Get default guest network in Basic zone
-            Network defaultNetwork = null;
-            try {
-                DataCenterVO zone = _dcDao.findById(vm.getDataCenterId());
-                if (zone.getNetworkType() == NetworkType.Basic) {
-                    // Get default guest network in Basic zone
-                    defaultNetwork = _networkModel.getExclusiveGuestNetwork(zone.getId());
-                } else if (_networkModel.checkSecurityGroupSupportForNetwork(_accountMgr.getActiveAccountById(vm.getAccountId()), zone, Collections.emptyList(), securityGroupIdList)) {
-                    NicVO defaultNic = _nicDao.findDefaultNicForVM(vm.getId());
-                    if (defaultNic != null) {
-                        defaultNetwork = _networkDao.findById(defaultNic.getNetworkId());
-                    }
-                }
-            } catch (InvalidParameterValueException e) {
-                if(logger.isDebugEnabled()) {
-                    logger.debug(e.getMessage(),e);
-                }
-                defaultNetwork = _networkModel.getDefaultNetworkForVm(id);
-            }
-
-            if (securityGroupIdList != null && _networkModel.isSecurityGroupSupportedInNetwork(defaultNetwork) && _networkModel.canAddDefaultSecurityGroup()) {
-                if (vm.getState() == State.Stopped) {
-                    // Remove instance from security groups
-                    _securityGroupMgr.removeInstanceFromGroups(vm);
-                    // Add instance in provided groups
-                    _securityGroupMgr.addInstanceToGroups(vm, securityGroupIdList);
-                } else {
-                    throw new InvalidParameterValueException("Virtual machine must be stopped prior to update security groups ");
-                }
-            }
-        }
         List<? extends Nic> nics = _nicDao.listByVmId(vm.getId());
         if (hostName != null) {
             // Check is hostName is RFC compliant
@@ -3173,6 +3136,35 @@
                     .getUuid(), nic.getId(), extraDhcpOptionsMap);
         }
 
+        boolean isVMware = (vm.getHypervisorType() == HypervisorType.VMware);
+
+        if (securityGroupIdList != null && isVMware) {
+            throw new InvalidParameterValueException("Security group feature is not supported for vmWare hypervisor");
+        } else if (securityGroupIdList != null){
+            DataCenterVO zone = _dcDao.findById(vm.getDataCenterId());
+            List<Long> networkIds = new ArrayList<>();
+            try {
+                if (zone.getNetworkType() == NetworkType.Basic) {
+                    // Get default guest network in Basic zone
+                    Network defaultNetwork = _networkModel.getExclusiveGuestNetwork(zone.getId());
+                    networkIds.add(defaultNetwork.getId());
+                } else {
+                    networkIds = networks.stream().map(Network::getId).collect(Collectors.toList());
+                }
+            } catch (InvalidParameterValueException e) {
+                if(logger.isDebugEnabled()) {
+                    logger.debug(e.getMessage(),e);
+                }
+            }
+
+            if (_networkModel.checkSecurityGroupSupportForNetwork(
+                            _accountMgr.getActiveAccountById(vm.getAccountId()),
+                            zone, networkIds, securityGroupIdList)
+            ) {
+                updateSecurityGroup(vm, securityGroupIdList);
+            }
+        }
+
         _vmDao.updateVM(id, displayName, ha, osTypeId, userData, userDataId,
                 userDataDetails, isDisplayVmEnabled, isDynamicallyScalable,
                 deleteProtection, customId, hostName, instanceName);
@@ -3188,6 +3180,17 @@
         return _vmDao.findById(id);
     }
 
+    private void updateSecurityGroup(UserVmVO vm, List<Long> securityGroupIdList) {
+        if (vm.getState() == State.Stopped) {
+            // Remove instance from security groups
+            _securityGroupMgr.removeInstanceFromGroups(vm);
+            // Add instance in provided groups
+            _securityGroupMgr.addInstanceToGroups(vm, securityGroupIdList);
+        } else {
+            throw new InvalidParameterValueException("Virtual machine must be stopped prior to update security groups ");
+        }
+    }
+
     protected void updateUserData(UserVm vm) throws ResourceUnavailableException, InsufficientCapacityException {
         boolean result = updateUserDataInternal(vm);
         if (result) {

ui/src/views/compute/EditVM.vue

@@ -206,7 +206,7 @@ export default {
         zoneid: this.resource.zoneid
       }).then(response => {
         const zone = response?.listzonesresponse?.zone || []
-        this.securityGroupsEnabled = zone?.[0]?.securitygroupsenabled
+        this.securityGroupsEnabled = zone?.[0]?.securitygroupsenabled || this.$store.getters.showSecurityGroups
       })
     },
     fetchSecurityGroups () {

ui/src/views/compute/InstanceTab.vue

@@ -179,6 +179,7 @@ export default {
       vm: {},
       totalStorage: 0,
       currentTab: 'details',
+      showUpdateSecurityGroupsModal: false,
       showAddVolumeModal: false,
       diskOfferings: [],
       annotations: [],