CLOUDSTACK-9317: When there 1 static nat removing PF rules is handled

There is 1 static nat rule and 2 PF rule. Removing 2 PF rules was deleting static nat rule.
    Fixed this issue in this commit.

api/src/com/cloud/network/IpAddress.java

@@ -92,4 +92,8 @@ public interface IpAddress extends ControlledEntity, Identity, InternalIdentity,
 
     public Date getCreated();
 
+    State getRuleState();
+
+    void setRuleState(State ruleState);
+
 }

core/src/com/cloud/agent/api/routing/NetworkElementCommand.java

@@ -38,7 +38,7 @@ public abstract class NetworkElementCommand extends Command {
     public static final String VPC_PRIVATE_GATEWAY = "vpc.gateway.private";
     public static final String FIREWALL_EGRESS_DEFAULT = "firewall.egress.default";
     public static final String ROUTER_MONITORING_ENABLE = "router.monitor.enable";
-    public static final String NETWORK_PUB_LAST_IP = "newtork.public.last.ip";
+    public static final String NETWORK_PUB_LAST_IP = "network.public.last.ip";
 
     private String routerAccessIp;
 

engine/components-api/src/com/cloud/network/addr/PublicIp.java

@@ -255,4 +255,13 @@ public class PublicIp implements PublicIpAddress {
         return IpAddress.class;
     }
 
+    @Override
+    public State getRuleState() {
+        return _addr.getRuleState();
+    }
+
+    @Override
+    public void setRuleState(State ruleState) {
+        _addr.setRuleState(ruleState);
+    }
 }

engine/schema/src/com/cloud/network/dao/IPAddressVO.java

@@ -117,6 +117,10 @@ public class IPAddressVO implements IpAddress {
     @Column(name = "display", updatable = true, nullable = false)
     protected boolean display = true;
 
+    @Enumerated(value = EnumType.STRING)
+    @Column(name = "rule_state")
+    State ruleState;
+
     @Column(name= GenericDao.REMOVED_COLUMN)
     private Date removed;
 
@@ -367,4 +371,14 @@ public class IPAddressVO implements IpAddress {
     public Date getCreated() {
         return created;
     }
+
+    @Override
+    public State getRuleState() {
+        return ruleState;
+    }
+
+    @Override
+    public void setRuleState(State ruleState) {
+        this.ruleState = ruleState;
+    }
 }

server/src/com/cloud/network/router/CommandSetupHelper.java

@@ -858,7 +858,8 @@ public class CommandSetupHelper {
                     ipsWithrules++;
                 }
 
-                if (ip.isOneToOneNat()) {
+                // check onetoonenat and also check if the ip "add":false. If there are 2 PF remove 1 static nat add
+                if (ip.isOneToOneNat() && ip.getRuleState() == null) {
                     ipsStaticNat++;
                 }
             }
@@ -870,13 +871,8 @@ public class CommandSetupHelper {
             final DataCenterVO dcVo = _dcDao.findById(router.getDataCenterId());
             cmd.setAccessDetail(NetworkElementCommand.ZONE_NETWORK_TYPE, dcVo.getNetworkType().toString());
 
-            boolean remove = false;
+            // if there 1 static nat then it will be checked for remove at the resource
-            // if there is only one static nat then it will be checked for remove at the resource
+            if (ipsWithrules == 0 && ipsStaticNat == 0 ) {
-            if (ipsWithrules == 0 && (ipsStaticNat == 0 || ipsStaticNat == 1)) {
-                remove = true;
-            }
-
-            if (remove) {
                 // there is only one ip address for the network.
                 cmd.setAccessDetail(NetworkElementCommand.NETWORK_PUB_LAST_IP, "true");
             }

server/src/com/cloud/network/rules/RulesManagerImpl.java

@@ -1259,6 +1259,10 @@ public class RulesManagerImpl extends ManagerBase implements RulesManager, Rules
             throw ex;
         }
 
+        ipAddress.setRuleState(IpAddress.State.Releasing);
+        _ipAddressDao.update(ipAddress.getId(), ipAddress);
+        ipAddress = _ipAddressDao.findById(ipId);
+
         // Revoke all firewall rules for the ip
         try {
             s_logger.debug("Revoking all " + Purpose.Firewall + "rules as a part of disabling static nat for public IP id=" + ipId);
@@ -1280,6 +1284,7 @@ public class RulesManagerImpl extends ManagerBase implements RulesManager, Rules
             boolean isIpSystem = ipAddress.getSystem();
             ipAddress.setOneToOneNat(false);
             ipAddress.setAssociatedWithVmId(null);
+            ipAddress.setRuleState(null);
             ipAddress.setVmIp(null);
             if (isIpSystem && !releaseIpIfElastic) {
                 ipAddress.setSystem(false);
@@ -1295,6 +1300,9 @@ public class RulesManagerImpl extends ManagerBase implements RulesManager, Rules
             return true;
         } else {
             s_logger.warn("Failed to disable one to one nat for the ip address id" + ipId);
+            ipAddress = _ipAddressDao.findById(ipId);
+            ipAddress.setRuleState(null);
+            _ipAddressDao.update(ipAddress.getId(), ipAddress);
             return false;
         }
     }

setup/db/db/schema-4920to41000.sql

@@ -245,3 +245,4 @@ CREATE TABLE `cloud`.`guest_os_details` (
   CONSTRAINT `fk_guest_os_details__guest_os_id` FOREIGN KEY `fk_guest_os_details__guest_os_id`(`guest_os_id`) REFERENCES `guest_os`(`id`) ON DELETE CASCADE
 ) ENGINE=InnoDB DEFAULT CHARSET=utf8;
 
+ALTER TABLE `user_ip_address` ADD COLUMN `rule_state` VARCHAR(32) COMMENT 'static  rule state while removing';