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 org.apache.ambari.server.upgrade;
  
  import java.sql.SQLException;
  import java.util.Map;
  
  import org.apache.ambari.server.AmbariException;
  import org.apache.ambari.server.controller.AmbariManagementController;
  import org.apache.ambari.server.orm.DBAccessor;
  import org.apache.ambari.server.state.Cluster;
  import org.apache.ambari.server.state.Clusters;
  import org.apache.ambari.server.state.StackId;
  
  import com.google.inject.Inject;
  import com.google.inject.Injector;
  
  /**
   * The {@link UpgradeCatalog262} upgrades Ambari from 2.6.1 to 2.6.2.
   */
  public class UpgradeCatalog262 extends AbstractUpgradeCatalog {
  
    private static final String HOST_REQUEST_TABLE = "topology_host_request";
    private static final String STATUS_COLUMN = "status";
    private static final String STATUS_MESSAGE_COLUMN = "status_message";
  
    @Inject
    public UpgradeCatalog262(Injector injector) {
      super(injector);
    }
  
    @Override
    public String getSourceVersion() {
      return "2.6.1";
    }
  
    @Override
    public String getTargetVersion() {
      return "2.6.2";
    }
  
    @Override
    protected void executeDDLUpdates() throws AmbariException, SQLException {
      addHostRequestStatusColumn();
    }
  
    private void addHostRequestStatusColumn() throws SQLException {
      dbAccessor.addColumn(HOST_REQUEST_TABLE, new DBAccessor.DBColumnInfo(STATUS_COLUMN, String.class, 255, null, true));
      dbAccessor.addColumn(HOST_REQUEST_TABLE, new DBAccessor.DBColumnInfo(STATUS_MESSAGE_COLUMN, String.class, 1024, null, true));
    }
  
    @Override
    protected void executePreDMLUpdates() throws AmbariException, SQLException {
      fixDesiredStack();
    }
  
    /**
     * if desired stack < current stack, set current stack as desired
     *
     * @throws AmbariException
     */
    private void fixDesiredStack() throws AmbariException {
      AmbariManagementController ambariManagementController = injector.getInstance(AmbariManagementController.class);
      Clusters clusters = ambariManagementController.getClusters();
      if (clusters != null) {
        Map<String, Cluster> clusterMap = getCheckedClusterMap(clusters);
        if (clusterMap != null && !clusterMap.isEmpty()) {
          for (final Cluster cluster : clusterMap.values()) {
            StackId desiredStack = cluster.getDesiredStackVersion();
            StackId currentStack = cluster.getCurrentStackVersion();
            if (!desiredStack.equals(currentStack)) {
              cluster.setDesiredStackVersion(currentStack);
            }
          }
        }
      }
    }
  
    @Override
    protected void executeDMLUpdates() throws AmbariException, SQLException {
    }
  
  }
  