content: // 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.io.InputStream;
  import java.sql.Connection;
  import java.sql.PreparedStatement;
  import java.sql.ResultSet;
  import java.sql.SQLException;
  import java.util.ArrayList;
  import java.util.List;
  
  
  import com.cloud.utils.exception.CloudRuntimeException;
  
  public class Upgrade452to460 extends DbUpgradeAbstractImpl {
  
      @Override
      public String[] getUpgradableVersionRange() {
          return new String[] { "4.5.2", "4.6.0" };
      }
  
      @Override
      public String getUpgradedVersion() {
          return "4.6.0";
      }
  
      @Override
      public boolean supportsRollingUpgrade() {
          return false;
      }
  
      @Override
      public InputStream[] getPrepareScripts() {
          final String scriptFile = "META-INF/db/schema-452to460.sql";
          final InputStream script = Thread.currentThread().getContextClassLoader().getResourceAsStream(scriptFile);
          if (script == null) {
              throw new CloudRuntimeException("Unable to find " + scriptFile);
          }
  
          return new InputStream[] {script};
      }
  
      @Override
      public void performDataMigration(final Connection conn) {
          updateVMInstanceUserId(conn);
          addIndexForVMInstance(conn);
      }
  
      public void updateVMInstanceUserId(final Connection conn) {
          // For schemas before this, copy first user from an account_id which
          // deployed already running VMs
          logger.debug("Updating vm_instance column user_id using first user in vm_instance's account_id");
          final String vmInstanceSql = "SELECT id, account_id FROM `cloud`.`vm_instance`";
          final String userSql = "SELECT id FROM `cloud`.`user` where account_id=?";
          final String userIdUpdateSql = "update `cloud`.`vm_instance` set user_id=? where id=?";
          try (PreparedStatement selectStatement = conn.prepareStatement(vmInstanceSql)) {
              final ResultSet results = selectStatement.executeQuery();
              while (results.next()) {
                  final long vmId = results.getLong(1);
                  final long accountId = results.getLong(2);
                  try (PreparedStatement selectUserStatement = conn.prepareStatement(userSql)) {
                      selectUserStatement.setLong(1, accountId);
                      final ResultSet userResults = selectUserStatement.executeQuery();
                      if (userResults.next()) {
                          final long userId = userResults.getLong(1);
                          try (PreparedStatement updateStatement = conn.prepareStatement(userIdUpdateSql)) {
                              updateStatement.setLong(1, userId);
                              updateStatement.setLong(2, vmId);
                              updateStatement.executeUpdate();
                          } catch (final SQLException e) {
                              throw new CloudRuntimeException("Unable to update user ID " + userId + " on vm_instance id=" + vmId, e);
                          }
                      }
  
                  } catch (final SQLException e) {
                      throw new CloudRuntimeException("Unable to update user ID using accountId " + accountId + " on vm_instance id=" + vmId, e);
                  }
              }
          } catch (final SQLException e) {
              throw new CloudRuntimeException("Unable to update user Ids for previously deployed VMs", e);
          }
          logger.debug("Done updating user Ids for previously deployed VMs");
          addRedundancyForNwAndVpc(conn);
          removeBumPriorityColumn(conn);
      }
  
      private void addRedundancyForNwAndVpc(final Connection conn) {
          ResultSet rs = null;
          try (PreparedStatement addRedundantColToVpcOfferingPstmt = conn
                  .prepareStatement("ALTER TABLE `cloud`.`vpc_offerings` ADD COLUMN `redundant_router_service` tinyint(1) DEFAULT 0");
                  PreparedStatement addRedundantColToVpcPstmt = conn.prepareStatement("ALTER TABLE `cloud`.`vpc` ADD COLUMN `redundant` tinyint(1) DEFAULT 0");
                  PreparedStatement addRedundantColToNwPstmt = conn.prepareStatement("ALTER TABLE `cloud`.`networks` ADD COLUMN `redundant` tinyint(1) DEFAULT 0");
  
                  // The redundancy of the networks must be based on the
                  // redundancy of their network offerings
                  PreparedStatement redundancyPerNwPstmt = conn.prepareStatement("select distinct nw.network_offering_id from networks nw join network_offerings off "
                          + "on nw.network_offering_id = off.id where off.redundant_router_service = 1");
                  PreparedStatement updateNwRedundancyPstmt = conn.prepareStatement("update networks set redundant = 1 where network_offering_id = ?");) {
              addRedundantColToVpcPstmt.executeUpdate();
              addRedundantColToVpcOfferingPstmt.executeUpdate();
              addRedundantColToNwPstmt.executeUpdate();
  
              rs = redundancyPerNwPstmt.executeQuery();
              while (rs.next()) {
                  final long nwOfferingId = rs.getLong("nw.network_offering_id");
                  updateNwRedundancyPstmt.setLong(1, nwOfferingId);
                  updateNwRedundancyPstmt.executeUpdate();
              }
          } catch (final SQLException e) {
              e.printStackTrace();
              throw new CloudRuntimeException("Adding redundancy to vpc, networks and vpc_offerings failed", e);
          }
      }
  
      private void removeBumPriorityColumn(final Connection conn) {
          try (PreparedStatement removeBumPriorityColumnPstmt = conn.prepareStatement("ALTER TABLE `cloud`.`domain_router` DROP COLUMN `is_priority_bumpup`");) {
              removeBumPriorityColumnPstmt.executeUpdate();
          } catch (final SQLException e) {
              e.printStackTrace();
              throw new CloudRuntimeException("Adding redundancy to vpc, networks and vpc_offerings failed", e);
          }
      }
  
      private void addIndexForVMInstance(final Connection conn) {
          // Drop index if it exists
          final List<String> indexList = new ArrayList<String>();
          logger.debug("Dropping index i_vm_instance__instance_name from vm_instance table if it exists");
          indexList.add("i_vm_instance__instance_name");
          DbUpgradeUtils.dropKeysIfExist(conn, "vm_instance", indexList, false);
  
          // Now add index
          try (PreparedStatement pstmt = conn.prepareStatement("ALTER TABLE `cloud`.`vm_instance` ADD INDEX `i_vm_instance__instance_name`(`instance_name`)");) {
              pstmt.executeUpdate();
              logger.debug("Added index i_vm_instance__instance_name to vm_instance table");
          } catch (final SQLException e) {
              throw new CloudRuntimeException("Unable to add index i_vm_instance__instance_name to vm_instance table for the column instance_name", e);
          }
      }
  
      @Override
      public InputStream[] getCleanupScripts() {
          final String scriptFile = "META-INF/db/schema-452to460-cleanup.sql";
          final InputStream script = Thread.currentThread().getContextClassLoader().getResourceAsStream(scriptFile);
          if (script == null) {
              throw new CloudRuntimeException("Unable to find " + scriptFile);
          }
  
          return new InputStream[] {script};
      }
  }
  