Fix LB rule creation on different tier in not on VPC with conserve mode enabled

engine/components-api/src/main/java/com/cloud/network/vpc/VpcManager.java

@@ -211,4 +211,9 @@ public interface VpcManager {
     void reconfigStaticNatForVpcVr(Long vpcId);
 
     boolean applyStaticRouteForVpcVpnIfNeeded(Long vpcId, boolean updateAllVpn) throws ResourceUnavailableException;
+
+    /**
+     * Returns true if the network is part of a VPC, and the VPC is created from conserve mode enabled VPC offering
+     */
+    boolean isNetworkOnVpcEnabledConserveMode(Network network);
 }

server/src/main/java/com/cloud/network/firewall/FirewallManagerImpl.java

@@ -31,7 +31,6 @@ import javax.inject.Inject;
 import javax.naming.ConfigurationException;
 
 import com.cloud.network.vpc.Vpc;
-import com.cloud.network.vpc.VpcOfferingVO;
 import com.cloud.network.vpc.dao.VpcOfferingDao;
 import org.apache.commons.lang3.ObjectUtils;
 import org.springframework.stereotype.Component;
@@ -401,8 +400,8 @@ public class FirewallManagerImpl extends ManagerBase implements FirewallService,
         }
 
         NetworkVO newRuleNetwork = getNewRuleNetwork(newRule);
-        boolean newRuleIsOnVpcNetwork = isNewRuleOnVpcNetwork(newRuleNetwork);
-        boolean vpcConserveModeEnabled = isVpcConserveModeEnabled(newRuleNetwork);
+        boolean newRuleIsOnVpcNetwork = newRuleNetwork.getVpcId() != null;
+        boolean vpcConserveModeEnabled = _vpcMgr.isNetworkOnVpcEnabledConserveMode(newRuleNetwork);
 
         for (FirewallRuleVO rule : rules) {
             if (rule.getId() == newRule.getId()) {
@@ -509,19 +508,6 @@ public class FirewallManagerImpl extends ManagerBase implements FirewallService,
         }
     }
 
-    protected boolean isVpcConserveModeEnabled(NetworkVO newRuleNetwork) {
-        if (isNewRuleOnVpcNetwork(newRuleNetwork)) {
-            Vpc vpc = _vpcMgr.getActiveVpc(newRuleNetwork.getVpcId());
-            VpcOfferingVO vpcOffering = vpc != null ? vpcOfferingDao.findById(vpc.getVpcOfferingId()) : null;
-            return vpcOffering != null && vpcOffering.isConserveMode();
-        }
-        return false;
-    }
-
-    protected boolean isNewRuleOnVpcNetwork(NetworkVO newRuleNetwork) {
-        return newRuleNetwork.getVpcId() != null;
-    }
-
     protected NetworkVO getNewRuleNetwork(FirewallRule newRule) {
         NetworkVO newRuleNetwork = _networkDao.findById(newRule.getNetworkId());
         if (newRuleNetwork == null) {

server/src/main/java/com/cloud/network/lb/LoadBalancingRulesManagerImpl.java

@@ -1738,6 +1738,8 @@ public class LoadBalancingRulesManagerImpl<Type> extends ManagerBase implements
             throw new NetworkRuleConflictException("Can't do load balance on IP address: " + ipVO.getAddress());
         }
 
+        verifyLoadBalancerRuleNetwork(name, network, ipVO);
+
         String cidrString = generateCidrString(cidrList);
 
         boolean performedIpAssoc = false;
@@ -1790,7 +1792,18 @@ public class LoadBalancingRulesManagerImpl<Type> extends ManagerBase implements
 
         return result;
     }
-   /**
+
+    protected void verifyLoadBalancerRuleNetwork(String lbName, Network network, IPAddressVO ipVO) {
+        boolean isVpcConserveModeEnabled = _vpcMgr.isNetworkOnVpcEnabledConserveMode(network);
+        if (!isVpcConserveModeEnabled && ipVO.getAssociatedWithNetworkId() != null && network.getId() != ipVO.getAssociatedWithNetworkId()) {
+            String msg = String.format("Cannot create Load Balancer rule %s as the IP address %s is not associated " +
+                    "with the network %s (ID=%s)", lbName, ipVO.getAddress(), network.getName(), network.getUuid());
+            logger.error(msg);
+            throw new InvalidParameterValueException(msg);
+        }
+    }
+
+    /**
     * Transforms the cidrList from a List of Strings to a String which contains all the CIDRs from cidrList separated by whitespaces. This is used to facilitate both the persistence
     * in the DB and also later when building the configuration String in the getRulesForPool method of the HAProxyConfigurator class.
    */

server/src/main/java/com/cloud/network/vpc/VpcManagerImpl.java

@@ -2956,6 +2956,20 @@ public class VpcManagerImpl extends ManagerBase implements VpcManager, VpcProvis
         return true;
     }
 
+    protected boolean isNetworkOnVpc(Network network) {
+        return network.getVpcId() != null;
+    }
+
+    @Override
+    public boolean isNetworkOnVpcEnabledConserveMode(Network newRuleNetwork) {
+        if (isNetworkOnVpc(newRuleNetwork)) {
+            Vpc vpc = getActiveVpc(newRuleNetwork.getVpcId());
+            VpcOfferingVO vpcOffering = vpc != null ? _vpcOffDao.findById(vpc.getVpcOfferingId()) : null;
+            return vpcOffering != null && vpcOffering.isConserveMode();
+        }
+        return false;
+    }
+
     protected boolean applyStaticRoutes(final List<StaticRouteVO> routes, final Account caller, final boolean updateRoutesInDB) throws ResourceUnavailableException {
         final boolean success = true;
         final List<StaticRouteProfile> staticRouteProfiles = getVpcStaticRoutes(routes);

server/src/test/java/com/cloud/network/vpc/VpcManagerImplTest.java

@@ -581,4 +581,27 @@ public class VpcManagerImplTest {
         Assert.assertThrows(InvalidParameterValueException.class, () -> manager.validateVpcPrivateGatewayAclId(vpcId, differentVpcAclId));
     }
 
+    @Test
+    public void testIsNetworkOnVpcEnabledConserveModeIsolatedNetwork() {
+        Network network = mock(Network.class);
+        Mockito.when(network.getVpcId()).thenReturn(null);
+        Assert.assertFalse(manager.isNetworkOnVpcEnabledConserveMode(network));
+    }
+
+    @Test
+    public void testIsNetworkOnVpcEnabledConserveModeVpcNetworkConserveMode() {
+        Network network = mock(Network.class);
+        Vpc vpc = mock(Vpc.class);
+        VpcOfferingVO vpcOffering = mock(VpcOfferingVO.class);
+        long vpcId = 10L;
+        long vpcOfferingId = 11L;
+
+        Mockito.when(network.getVpcId()).thenReturn(vpcId);
+        Mockito.when(vpcDao.getActiveVpcById(Mockito.eq(vpcId))).thenReturn(vpc);
+        Mockito.when(vpc.getVpcOfferingId()).thenReturn(vpcOfferingId);
+        Mockito.when(vpcOfferingDao.findById(Mockito.eq(vpcOfferingId))).thenReturn(vpcOffering);
+        Mockito.when(vpcOffering.isConserveMode()).thenReturn(true);
+        Assert.assertTrue(manager.isNetworkOnVpcEnabledConserveMode(network));
+    }
+
 }