Upgrade: check systemvm template before db changes

Author: ustcweizhou

engine/schema/src/main/java/com/cloud/upgrade/DatabaseUpgradeChecker.java

@@ -34,6 +34,7 @@
 import org.apache.log4j.Logger;
 
 import com.cloud.upgrade.dao.DbUpgrade;
+import com.cloud.upgrade.dao.DbUpgradeSystemVmTemplate;
 import com.cloud.upgrade.dao.Upgrade217to218;
 import com.cloud.upgrade.dao.Upgrade218to22;
 import com.cloud.upgrade.dao.Upgrade218to224DomainVlans;
@@ -237,6 +238,32 @@ protected void upgrade(CloudStackVersion dbVersion, CloudStackVersion currentVer
 
         final DbUpgrade[] upgrades = calculateUpgradePath(dbVersion, currentVersion);
 
+        for (int i = upgrades.length - 1; i >= 0; i--) {
+            DbUpgrade upgrade = upgrades[i];
+            if (upgrade instanceof DbUpgradeSystemVmTemplate) {
+                TransactionLegacy txn = TransactionLegacy.open("Upgrade");
+                txn.start();
+                try {
+                    Connection conn;
+                    try {
+                        conn = txn.getConnection();
+                    } catch (SQLException e) {
+                        String errorMessage = "Unable to upgrade the database";
+                        s_logger.error(errorMessage, e);
+                        throw new CloudRuntimeException(errorMessage, e);
+                    }
+                    ((DbUpgradeSystemVmTemplate)upgrade).updateSystemVmTemplates(conn);
+                    break;
+                } catch (CloudRuntimeException e) {
+                    String errorMessage = "Unable to upgrade the database";
+                    s_logger.error(errorMessage, e);
+                    throw new CloudRuntimeException(errorMessage, e);
+                } finally {
+                    txn.close();
+                }
+            }
+        }
+
         for (DbUpgrade upgrade : upgrades) {
             VersionVO version;
             s_logger.debug("Running upgrade " + upgrade.getClass().getSimpleName() + " to upgrade from " + upgrade.getUpgradableVersionRange()[0] + "-" + upgrade

engine/schema/src/main/java/com/cloud/upgrade/dao/DbUpgradeSystemVmTemplate.java

@@ -0,0 +1,25 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+package com.cloud.upgrade.dao;
+
+import java.sql.Connection;
+
+public interface DbUpgradeSystemVmTemplate {
+
+    void updateSystemVmTemplates(Connection conn);
+}

engine/schema/src/main/java/com/cloud/upgrade/dao/Upgrade41400to41500.java

@@ -35,7 +35,7 @@
 import com.cloud.hypervisor.Hypervisor;
 import com.cloud.utils.exception.CloudRuntimeException;
 
-public class Upgrade41400to41500 implements DbUpgrade {
+public class Upgrade41400to41500 implements DbUpgrade, DbUpgradeSystemVmTemplate {
 
     final static Logger LOG = Logger.getLogger(Upgrade41400to41500.class);
 
@@ -67,10 +67,10 @@ public InputStream[] getPrepareScripts() {
 
     @Override
     public void performDataMigration(Connection conn) {
-        updateSystemVmTemplates(conn);
         addRolePermissionsForNewReadOnlyAndSupportRoles(conn);
     }
 
+    @Override
     @SuppressWarnings("serial")
     private void updateSystemVmTemplates(final Connection conn) {
         LOG.debug("Updating System Vm template IDs");